1e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o/* 2e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * probe.c - identify a block device by its contents, and return a dev 3e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * struct with the details 4e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * 5e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * Copyright (C) 1999 by Andries Brouwer 650b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o 7e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * Copyright (C) 2001 by Andreas Dilger 82f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> 9e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * 10e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * %Begin-Header% 11e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * This file may be redistributed under the terms of the 12e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * GNU Lesser General Public License. 13e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * %End-Header% 14e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o */ 15e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 16d1154eb460efe588eaed3d439c1caaca149fa362Theodore Ts'o#include "config.h" 17e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include <stdio.h> 18e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include <string.h> 19e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include <stdlib.h> 20e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include <unistd.h> 21e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include <fcntl.h> 223a538e42441afa5e5b34942062acb976e0d345f6Theodore Ts'o#include <ctype.h> 23e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include <sys/types.h> 24e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#ifdef HAVE_SYS_STAT_H 25e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include <sys/stat.h> 26e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#endif 27e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#ifdef HAVE_SYS_MKDEV_H 28e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include <sys/mkdev.h> 29e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#endif 3018f734301012301efbeb87a7c67f6cf82f1721d7Eric Sandeen#ifdef __linux__ 31cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o#include <sys/utsname.h> 3218f734301012301efbeb87a7c67f6cf82f1721d7Eric Sandeen#endif 33e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#ifdef HAVE_ERRNO_H 34e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include <errno.h> 35e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#endif 367a603aa89fcffb8798eca34ca3858db6f0393046Theodore Ts'o#include "blkidP.h" 37e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include "uuid/uuid.h" 38e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#include "probe.h" 39e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 4045a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'ostatic int figure_label_len(const unsigned char *label, int len) 4145a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o{ 4245a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o const unsigned char *end = label + len - 1; 4345a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o 4445a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o while ((*end == ' ' || *end == 0) && end >= label) 4545a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o --end; 46871ad942641b604631a9d33a7008e073ba946a9eTheodore Ts'o if (end >= label) 4745a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o return end - label + 1; 4845a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o return 0; 4945a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o} 5045a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o 51efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'ostatic unsigned char *get_buffer(struct blkid_probe *pr, 52cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o blkid_loff_t off, size_t len) 53ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o{ 54ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o ssize_t ret_read; 55ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o unsigned char *newbuf; 56ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o 57ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (off + len <= SB_BUFFER_SIZE) { 58ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (!pr->sbbuf) { 59ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o pr->sbbuf = malloc(SB_BUFFER_SIZE); 60ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (!pr->sbbuf) 61ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o return NULL; 62ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (lseek(pr->fd, 0, SEEK_SET) < 0) 63ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o return NULL; 64ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o ret_read = read(pr->fd, pr->sbbuf, SB_BUFFER_SIZE); 65ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (ret_read < 0) 66ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o ret_read = 0; 67ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o pr->sb_valid = ret_read; 68ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o } 69ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (off+len > pr->sb_valid) 70ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o return NULL; 71ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o return pr->sbbuf + off; 72ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o } else { 73ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (len > pr->buf_max) { 74ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o newbuf = realloc(pr->buf, len); 75ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (newbuf == NULL) 76ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o return NULL; 77ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o pr->buf = newbuf; 78ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o pr->buf_max = len; 79ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o } 80cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (blkid_llseek(pr->fd, off, SEEK_SET) < 0) 81ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o return NULL; 82ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o ret_read = read(pr->fd, pr->buf, len); 83ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (ret_read != (ssize_t) len) 84ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o return NULL; 85ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o return pr->buf; 86ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o } 87ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o} 88ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o 89ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o 90e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o/* 9150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o * This is a special case code to check for an MDRAID device. We do 9250b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o * this special since it requires checking for a superblock at the end 9350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o * of the device. 94e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o */ 9550b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'ostatic int check_mdraid(int fd, unsigned char *ret_uuid) 96e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o{ 9750b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o struct mdp_superblock_s *md; 9850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o blkid_loff_t offset; 9950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o char buf[4096]; 100efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 10150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (fd < 0) 102e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return -BLKID_ERR_PARAM; 103e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 10450b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o offset = (blkid_get_dev_size(fd) & ~((blkid_loff_t)65535)) - 65536; 105e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 106e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o if (blkid_llseek(fd, offset, 0) < 0 || 10750b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o read(fd, buf, 4096) != 4096) 108e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return -BLKID_ERR_IO; 10950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o /* Check for magic number */ 1106b8be16e3ac9c5fc350ea25d864df7bb6e2f6f4cSergey Vlasov if (memcmp("\251+N\374", buf, 4) && memcmp("\374N+\251", buf, 4)) 111e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return -BLKID_ERR_PARAM; 112e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 11350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (!ret_uuid) 11450b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o return 0; 11550b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o *ret_uuid = 0; 116e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 11750b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o /* The MD UUID is not contiguous in the superblock, make it so */ 11850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o md = (struct mdp_superblock_s *)buf; 11950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (md->set_uuid0 || md->set_uuid1 || md->set_uuid2 || md->set_uuid3) { 12050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o memcpy(ret_uuid, &md->set_uuid0, 4); 121c9105ffbe55d2a25dea9fab0595baace3a59bd51Sergey Vlasov memcpy(ret_uuid + 4, &md->set_uuid1, 12); 122e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o } 12350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o return 0; 12450b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o} 125e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 126d4e0b1c6f5aa8c6a248d9149ed5634a310952411Theodore Ts'ostatic void set_uuid(blkid_dev dev, uuid_t uuid, const char *tag) 12750b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o{ 12850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o char str[37]; 129e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 13050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (!uuid_is_null(uuid)) { 13150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o uuid_unparse(uuid, str); 132ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o blkid_set_tag(dev, tag ? tag : "UUID", str, sizeof(str)); 13350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o } 134e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o} 135e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 1362921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'ostatic void get_ext2_info(blkid_dev dev, struct blkid_magic *id, 1372921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o unsigned char *buf) 1382e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o{ 1392e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o struct ext2_super_block *es = (struct ext2_super_block *) buf; 1402e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o const char *label = 0; 1412e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 142efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o DBG(DEBUG_PROBE, printf("ext2_sb.compat = %08X:%08X:%08X\n", 1432e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o blkid_le32(es->s_feature_compat), 1442e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o blkid_le32(es->s_feature_incompat), 1452e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o blkid_le32(es->s_feature_ro_compat))); 1462e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 1477369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o if (strlen(es->s_volume_name)) 1482e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o label = es->s_volume_name; 1497369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o blkid_set_tag(dev, "LABEL", label, sizeof(es->s_volume_name)); 1502e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 151ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o set_uuid(dev, es->s_uuid, 0); 1522921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o 1532921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o if ((es->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 1542921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o !uuid_is_null(es->s_journal_uuid)) 1552921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o set_uuid(dev, es->s_journal_uuid, "EXT_JOURNAL"); 1562921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o 1572921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o if (strcmp(id->bim_type, "ext2") && 1582921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o ((blkid_le32(es->s_feature_incompat) & 1592921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o EXT2_FEATURE_INCOMPAT_UNSUPPORTED) == 0)) 1602921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o blkid_set_tag(dev, "SEC_TYPE", "ext2", sizeof("ext2")); 1612e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o} 1622e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 163cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o/* 164cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * Check to see if a filesystem is in /proc/filesystems. 165cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * Returns 1 if found, 0 if not 166cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o */ 1673a538e42441afa5e5b34942062acb976e0d345f6Theodore Ts'ostatic int fs_proc_check(const char *fs_name) 168cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o{ 169cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o FILE *f; 170cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o char buf[80], *cp, *t; 171cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 172cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o f = fopen("/proc/filesystems", "r"); 173cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (!f) 174cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return (0); 175cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o while (!feof(f)) { 176cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (!fgets(buf, sizeof(buf), f)) 177cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o break; 178cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o cp = buf; 179cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (!isspace(*cp)) { 180cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o while (*cp && !isspace(*cp)) 181cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o cp++; 182cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o } 183cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o while (*cp && isspace(*cp)) 184cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o cp++; 185cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if ((t = strchr(cp, '\n')) != NULL) 186cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o *t = 0; 187cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if ((t = strchr(cp, '\t')) != NULL) 188cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o *t = 0; 189cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if ((t = strchr(cp, ' ')) != NULL) 190cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o *t = 0; 191cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (!strcmp(fs_name, cp)) { 192cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o fclose(f); 193cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return (1); 194cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o } 195cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o } 196cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o fclose(f); 197cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return (0); 198cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o} 199cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 200cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o/* 201cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * Check to see if a filesystem is available as a module 202cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * Returns 1 if found, 0 if not 203cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o */ 2043a538e42441afa5e5b34942062acb976e0d345f6Theodore Ts'ostatic int check_for_modules(const char *fs_name) 205cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o{ 20618f734301012301efbeb87a7c67f6cf82f1721d7Eric Sandeen#ifdef __linux__ 207cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o struct utsname uts; 208cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o FILE *f; 209249c962ad8f2daabc403577d0c994e4c986c8f9aKarel Zak char buf[1024], *cp; 210249c962ad8f2daabc403577d0c994e4c986c8f9aKarel Zak int namesz; 211cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 212cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (uname(&uts)) 213cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return (0); 214cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o snprintf(buf, sizeof(buf), "/lib/modules/%s/modules.dep", uts.release); 215cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 216cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o f = fopen(buf, "r"); 217cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (!f) 218cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return (0); 219249c962ad8f2daabc403577d0c994e4c986c8f9aKarel Zak 220249c962ad8f2daabc403577d0c994e4c986c8f9aKarel Zak namesz = strlen(fs_name); 221249c962ad8f2daabc403577d0c994e4c986c8f9aKarel Zak 222cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o while (!feof(f)) { 223cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (!fgets(buf, sizeof(buf), f)) 224cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o break; 225cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if ((cp = strchr(buf, ':')) != NULL) 226cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o *cp = 0; 227cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o else 228cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o continue; 229cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if ((cp = strrchr(buf, '/')) != NULL) 230cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o cp++; 231f2fe5da31deebc689bb64e71c8e873efc925d312Eric Sandeen else 232f2fe5da31deebc689bb64e71c8e873efc925d312Eric Sandeen cp = buf; 233249c962ad8f2daabc403577d0c994e4c986c8f9aKarel Zak if (!strncmp(cp, fs_name, namesz) && 234249c962ad8f2daabc403577d0c994e4c986c8f9aKarel Zak (!strcmp(cp + namesz, ".ko") || 235249c962ad8f2daabc403577d0c994e4c986c8f9aKarel Zak !strcmp(cp + namesz, ".ko.gz"))) { 2366964a17720ca88acd2075b57dde9c381f093e492Theodore Ts'o fclose(f); 237cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return (1); 2386964a17720ca88acd2075b57dde9c381f093e492Theodore Ts'o } 239cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o } 240cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o fclose(f); 24118f734301012301efbeb87a7c67f6cf82f1721d7Eric Sandeen#endif 242cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return (0); 243cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o} 244cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 245d1da14b5b0496621046179e5644cc924ce01dae1Theodore Ts'ostatic int linux_version_code(void) 2461361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o{ 2471361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o#ifdef __linux__ 2481361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o struct utsname ut; 249cf5301d7f2c3bbed3d26600335102414cbf0c4baAndreas Dilger static int version_code = -1; 2501361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o int major, minor, rev; 2511361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o char *endptr; 2521361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o const char *cp; 2531361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 2541361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o if (version_code > 0) 2551361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return version_code; 2561361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 2571361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o if (uname(&ut)) 2581361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return 0; 2591361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o cp = ut.release; 2601361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 2611361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o major = strtol(cp, &endptr, 10); 2621361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o if (cp == endptr || *endptr != '.') 2631361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return 0; 2641361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o cp = endptr + 1; 2651361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o minor = strtol(cp, &endptr, 10); 2661361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o if (cp == endptr || *endptr != '.') 2671361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return 0; 2681361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o cp = endptr + 1; 2691361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o rev = strtol(cp, &endptr, 10); 2701361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o if (cp == endptr) 2711361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return 0; 2721361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o version_code = (((major * 256) + minor) * 256) + rev; 2731361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return version_code; 2741361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o#else 2751361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return 0; 2761361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o#endif 2771361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o} 2781361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 2791361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o#define EXT4_SUPPORTS_EXT2 (2 * 65536 + 6*256 + 29) 2801361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 2811361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'ostatic int system_supports_ext2(void) 2821361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o{ 2831361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o static time_t last_check = 0; 2841361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o static int ret = -1; 2851361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o time_t now = time(0); 2861361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 2871361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o if (ret != -1 || (now - last_check) < 5) 2881361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return ret; 2891361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o last_check = now; 2901361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o ret = (fs_proc_check("ext2") || check_for_modules("ext2")); 2911361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return ret; 2921361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o} 2931361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 2943a538e42441afa5e5b34942062acb976e0d345f6Theodore Ts'ostatic int system_supports_ext4(void) 295cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o{ 296cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o static time_t last_check = 0; 297cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o static int ret = -1; 298cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o time_t now = time(0); 299cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 30018f734301012301efbeb87a7c67f6cf82f1721d7Eric Sandeen if (ret != -1 || (now - last_check) < 5) 301cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return ret; 302cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o last_check = now; 303cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o ret = (fs_proc_check("ext4") || check_for_modules("ext4")); 304cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return ret; 305cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o} 306cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 3073a538e42441afa5e5b34942062acb976e0d345f6Theodore Ts'ostatic int system_supports_ext4dev(void) 308cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o{ 309cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o static time_t last_check = 0; 310cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o static int ret = -1; 311cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o time_t now = time(0); 312cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 31318f734301012301efbeb87a7c67f6cf82f1721d7Eric Sandeen if (ret != -1 || (now - last_check) < 5) 314cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return ret; 315cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o last_check = now; 316cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o ret = (fs_proc_check("ext4dev") || check_for_modules("ext4dev")); 317cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return ret; 318cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o} 319cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 3202921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'ostatic int probe_ext4dev(struct blkid_probe *probe, 3212921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o struct blkid_magic *id, 3222921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o unsigned char *buf) 3232921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o{ 3242921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o struct ext2_super_block *es; 3252921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o es = (struct ext2_super_block *)buf; 3262921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o 3272921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o /* Distinguish from jbd */ 3282921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o if (blkid_le32(es->s_feature_incompat) & 3292921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) 3302921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o return -BLKID_ERR_PARAM; 3312921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o 3321206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao /* 3331361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o * If the filesystem does not have a journal and ext2 and ext4 3341361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o * is not present, then force this to be detected as an 3351361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o * ext4dev filesystem. 3361361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o */ 3371361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o if (!(blkid_le32(es->s_feature_compat) & 3381361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 3391361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o !system_supports_ext2() && !system_supports_ext4() && 3401361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o system_supports_ext4dev() && 3411361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o linux_version_code() >= EXT4_SUPPORTS_EXT2) 3421361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o goto force_ext4dev; 3431361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 344cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o /* 345cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * If the filesystem is marked as OK for use by in-development 346cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * filesystem code, but ext4dev is not supported, and ext4 is, 347cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * then don't call ourselves ext4dev, since we should be 348cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * detected as ext4 in that case. 349cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * 350cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * If the filesystem is marked as in use by production 351cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * filesystem, then it can only be used by ext4 and NOT by 352cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * ext4dev, so always disclaim we are ext4dev in that case. 353cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o */ 354cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (blkid_le32(es->s_flags) & EXT2_FLAGS_TEST_FILESYS) { 355cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (!system_supports_ext4dev() && system_supports_ext4()) 356cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return -BLKID_ERR_PARAM; 357cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o } else 358cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return -BLKID_ERR_PARAM; 359cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o 3601361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'oforce_ext4dev: 3612921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o get_ext2_info(probe->dev, id, buf); 3622921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o return 0; 3632921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o} 3642921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o 3652921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'ostatic int probe_ext4(struct blkid_probe *probe, struct blkid_magic *id, 36612b3c8ec1d314b8775fc7d9cefd6bfff551f1de0Theodore Ts'o unsigned char *buf) 367e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o{ 368e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o struct ext2_super_block *es; 369e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o es = (struct ext2_super_block *)buf; 370e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 3712921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o /* Distinguish from jbd */ 372efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o if (blkid_le32(es->s_feature_incompat) & 3732e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) 374e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return -BLKID_ERR_PARAM; 375e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 3761206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao /* 3771361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o * If the filesystem does not have a journal and ext2 is not 3781361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o * present, then force this to be detected as an ext2 3791361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o * filesystem. 3801361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o */ 3811361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o if (!(blkid_le32(es->s_feature_compat) & 3821361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 3831361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o !system_supports_ext2() && system_supports_ext4() && 3841361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o linux_version_code() >= EXT4_SUPPORTS_EXT2) 3851361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o goto force_ext4; 3861361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 3872921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o /* Ext4 has at least one feature which ext3 doesn't understand */ 3882921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o if (!(blkid_le32(es->s_feature_ro_compat) & 3892921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) && 3902921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o !(blkid_le32(es->s_feature_incompat) & 3912921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o EXT3_FEATURE_INCOMPAT_UNSUPPORTED)) 3922921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o return -BLKID_ERR_PARAM; 393e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 3941361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'oforce_ext4: 395cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o /* 396cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * If the filesystem is a OK for use by in-development 397cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * filesystem code, and ext4dev is supported or ext4 is not 398cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * supported, then don't call ourselves ext4, so we can redo 399cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * the detection and mark the filesystem as ext4dev. 400cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * 401cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * If the filesystem is marked as in use by production 402cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * filesystem, then it can only be used by ext4 and NOT by 403cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o * ext4dev. 404cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o */ 405cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (blkid_le32(es->s_flags) & EXT2_FLAGS_TEST_FILESYS) { 406cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o if (system_supports_ext4dev() || !system_supports_ext4()) 407cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o return -BLKID_ERR_PARAM; 408cfc19311947dc4bd1731f641a8c52135a02e5559Theodore Ts'o } 4092921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o get_ext2_info(probe->dev, id, buf); 4102921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o return 0; 4112921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o} 412ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o 4132921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'ostatic int probe_ext3(struct blkid_probe *probe, struct blkid_magic *id, 4142921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o unsigned char *buf) 4152921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o{ 4162921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o struct ext2_super_block *es; 4172921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o es = (struct ext2_super_block *)buf; 4182e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 4192921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o /* ext3 requires journal */ 4202921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o if (!(blkid_le32(es->s_feature_compat) & 4212921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 4222921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o return -BLKID_ERR_PARAM; 4232e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 4242921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o /* Any features which ext3 doesn't understand */ 4252921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o if ((blkid_le32(es->s_feature_ro_compat) & 4262921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) || 4272921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o (blkid_le32(es->s_feature_incompat) & 4282921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o EXT3_FEATURE_INCOMPAT_UNSUPPORTED)) 4292921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o return -BLKID_ERR_PARAM; 4302921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o 4312921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o get_ext2_info(probe->dev, id, buf); 4322e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o return 0; 4332e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o} 4342e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 4352921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'ostatic int probe_ext2(struct blkid_probe *probe, struct blkid_magic *id, 43612b3c8ec1d314b8775fc7d9cefd6bfff551f1de0Theodore Ts'o unsigned char *buf) 4372e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o{ 4382e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o struct ext2_super_block *es; 4392e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 4402e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o es = (struct ext2_super_block *)buf; 4412e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 44205a6edf4fdf3beb93d22116cf4ec39d161ab2790Karel Zak /* Distinguish between ext3 and ext2 */ 44305a6edf4fdf3beb93d22116cf4ec39d161ab2790Karel Zak if ((blkid_le32(es->s_feature_compat) & 44405a6edf4fdf3beb93d22116cf4ec39d161ab2790Karel Zak EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 44505a6edf4fdf3beb93d22116cf4ec39d161ab2790Karel Zak return -BLKID_ERR_PARAM; 4462e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 4472921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o /* Any features which ext2 doesn't understand */ 4482921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o if ((blkid_le32(es->s_feature_ro_compat) & 4492921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o EXT2_FEATURE_RO_COMPAT_UNSUPPORTED) || 4502921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o (blkid_le32(es->s_feature_incompat) & 4512921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o EXT2_FEATURE_INCOMPAT_UNSUPPORTED)) 4522921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o return -BLKID_ERR_PARAM; 45379dd234a799434b6dc8365c49e743f00eb09d2fdTheodore Ts'o 4541206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao /* 4551361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o * If ext2 is not present, but ext4 or ext4dev are, then 4561361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o * disclaim we are ext2 4571361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o */ 4581361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o if (!system_supports_ext2() && 4591361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o (system_supports_ext4() || system_supports_ext4dev()) && 4601361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o linux_version_code() >= EXT4_SUPPORTS_EXT2) 4611361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o return -BLKID_ERR_PARAM; 4621361821e7e248166f0740c832b164e6cd6b89de9Theodore Ts'o 4632921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o get_ext2_info(probe->dev, id, buf); 464e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return 0; 465e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o} 466e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 4672921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'ostatic int probe_jbd(struct blkid_probe *probe, struct blkid_magic *id, 468544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o unsigned char *buf) 469e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o{ 47050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o struct ext2_super_block *es = (struct ext2_super_block *) buf; 471e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 47276b07bb1bc9cbcb70a94cb235954eaac993920adTheodore Ts'o if (!(blkid_le32(es->s_feature_incompat) & 47350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) 474e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return -BLKID_ERR_PARAM; 475e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 4762921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o get_ext2_info(probe->dev, id, buf); 4772e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o 4782e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o return 0; 479e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o} 480e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 4812f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o#define FAT_ATTR_VOLUME_ID 0x08 4822f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o#define FAT_ATTR_DIR 0x10 4832f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o#define FAT_ATTR_LONG_NAME 0x0f 4842f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o#define FAT_ATTR_MASK 0x3f 4852f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o#define FAT_ENTRY_FREE 0xe5 4862f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 487d4e0b1c6f5aa8c6a248d9149ed5634a310952411Theodore Ts'ostatic const char *no_name = "NO NAME "; 4882f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 4892f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'ostatic unsigned char *search_fat_label(struct vfat_dir_entry *dir, int count) 4902f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o{ 49112a829dcdc57fb8ddc4887b07b40136288b6e7feMatthias Andree int i; 4922f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 4932f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o for (i = 0; i < count; i++) { 4942f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o if (dir[i].name[0] == 0x00) 4952f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o break; 496efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 4972f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o if ((dir[i].name[0] == FAT_ENTRY_FREE) || 4982f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o (dir[i].cluster_high != 0 || dir[i].cluster_low != 0) || 4992f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o ((dir[i].attr & FAT_ATTR_MASK) == FAT_ATTR_LONG_NAME)) 5002f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o continue; 5012f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 502efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o if ((dir[i].attr & (FAT_ATTR_VOLUME_ID | FAT_ATTR_DIR)) == 5032f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o FAT_ATTR_VOLUME_ID) { 5042f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o return dir[i].name; 5052f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o } 5062f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o } 5072f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o return 0; 5082f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o} 5092f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 5102f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o/* FAT label extraction from the root directory taken from Kay 5112f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o * Sievers's volume_id library */ 512ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_fat(struct blkid_probe *probe, 513efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 514544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o unsigned char *buf) 515e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o{ 516038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o struct vfat_super_block *vs = (struct vfat_super_block *) buf; 517038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o struct msdos_super_block *ms = (struct msdos_super_block *) buf; 5182f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o struct vfat_dir_entry *dir; 519e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o char serno[10]; 52094fa1108eecb92bc595ae6f4927d2aeaea4049e8Matthias Andree const unsigned char *label = 0, *vol_label = 0, *tmp; 521038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o unsigned char *vol_serno; 5222f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o int label_len = 0, maxloop = 100; 5232f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o __u16 sector_size, dir_entries, reserved; 5242f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o __u32 sect_count, fat_size, dir_size, cluster_count, fat_length; 5252f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o __u32 buf_size, start_data_sect, next, root_start, root_dir_entries; 526e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 527038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o /* sector size check */ 528aadac9b7bbe7d1f4f0db02f3d7dbd70a856f9153Matthias Andree tmp = (unsigned char *)&ms->ms_sector_size; 529aadac9b7bbe7d1f4f0db02f3d7dbd70a856f9153Matthias Andree sector_size = tmp[0] + (tmp[1] << 8); 530038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o if (sector_size != 0x200 && sector_size != 0x400 && 531038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o sector_size != 0x800 && sector_size != 0x1000) 532038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o return 1; 533e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 534aadac9b7bbe7d1f4f0db02f3d7dbd70a856f9153Matthias Andree tmp = (unsigned char *)&ms->ms_dir_entries; 535aadac9b7bbe7d1f4f0db02f3d7dbd70a856f9153Matthias Andree dir_entries = tmp[0] + (tmp[1] << 8); 536038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o reserved = blkid_le16(ms->ms_reserved); 537aadac9b7bbe7d1f4f0db02f3d7dbd70a856f9153Matthias Andree tmp = (unsigned char *)&ms->ms_sectors; 538aadac9b7bbe7d1f4f0db02f3d7dbd70a856f9153Matthias Andree sect_count = tmp[0] + (tmp[1] << 8); 539038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o if (sect_count == 0) 540038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o sect_count = blkid_le32(ms->ms_total_sect); 541e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 542038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o fat_length = blkid_le16(ms->ms_fat_length); 543038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o if (fat_length == 0) 544038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o fat_length = blkid_le32(vs->vs_fat32_length); 545e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 546038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o fat_size = fat_length * ms->ms_fats; 547038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o dir_size = ((dir_entries * sizeof(struct vfat_dir_entry)) + 548038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o (sector_size-1)) / sector_size; 549e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 550038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o cluster_count = sect_count - (reserved + fat_size + dir_size); 55120c10a766788d9271e36f3ba3b0682a3027cb272Theodore Ts'o if (ms->ms_cluster_size == 0) 55220c10a766788d9271e36f3ba3b0682a3027cb272Theodore Ts'o return 1; 553038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o cluster_count /= ms->ms_cluster_size; 554e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 555038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o if (cluster_count > FAT32_MAX) 556038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o return 1; 557038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o 558038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o if (ms->ms_fat_length) { 5592f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o /* the label may be an attribute in the root directory */ 5602f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o root_start = (reserved + fat_size) * sector_size; 561efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o root_dir_entries = vs->vs_dir_entries[0] + 5622f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o (vs->vs_dir_entries[1] << 8); 5632f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 5642f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o buf_size = root_dir_entries * sizeof(struct vfat_dir_entry); 565efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o dir = (struct vfat_dir_entry *) get_buffer(probe, root_start, 5662f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o buf_size); 5672f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o if (dir) 5682f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o vol_label = search_fat_label(dir, root_dir_entries); 5692f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 5702f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o if (!vol_label || !memcmp(vol_label, no_name, 11)) 5712f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o vol_label = ms->ms_label; 572038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o vol_serno = ms->ms_serno; 573038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o 574efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o blkid_set_tag(probe->dev, "SEC_TYPE", "msdos", 5752f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o sizeof("msdos")); 576038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o } else { 5772f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o /* Search the FAT32 root dir for the label attribute */ 5782f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o buf_size = vs->vs_cluster_size * sector_size; 5792f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o start_data_sect = reserved + fat_size; 5802f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 5812f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o next = blkid_le32(vs->vs_root_cluster); 5822f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o while (next && --maxloop) { 5832f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o __u32 next_sect_off; 5842f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o __u64 next_off, fat_entry_off; 5852f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o int count; 5862f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 587a8307ab8cc3699aa47cd4d9fc176fc2cfde7b0e7Theodore Ts'o next_sect_off = (next - 2) * vs->vs_cluster_size; 588a8307ab8cc3699aa47cd4d9fc176fc2cfde7b0e7Theodore Ts'o next_off = (__u64) (start_data_sect + next_sect_off) * 5892f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o sector_size; 5902f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 591efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o dir = (struct vfat_dir_entry *) 5922f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o get_buffer(probe, next_off, buf_size); 5932f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o if (dir == NULL) 5942f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o break; 5952f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 5962f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o count = buf_size / sizeof(struct vfat_dir_entry); 5972f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 5982f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o vol_label = search_fat_label(dir, count); 5992f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o if (vol_label) 6002f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o break; 6012f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 6022f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o /* get FAT entry */ 603d1da14b5b0496621046179e5644cc924ce01dae1Theodore Ts'o fat_entry_off = 604d1da14b5b0496621046179e5644cc924ce01dae1Theodore Ts'o ((unsigned int) reserved * 605d1da14b5b0496621046179e5644cc924ce01dae1Theodore Ts'o (unsigned int) sector_size) + 6062f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o (next * sizeof(__u32)); 6072f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o buf = get_buffer(probe, fat_entry_off, buf_size); 6082f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o if (buf == NULL) 6092f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o break; 6102f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 6112f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o /* set next cluster */ 6122f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o next = blkid_le32(*((__u32 *) buf) & 0x0fffffff); 6132f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o } 6142f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o 6152f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o if (!vol_label || !memcmp(vol_label, no_name, 11)) 6162f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o vol_label = vs->vs_label; 617038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o vol_serno = vs->vs_serno; 618038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o } 619e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 6202f79e5193fa14bb338f14e07c3c96070092b6e8aTheodore Ts'o if (vol_label && memcmp(vol_label, no_name, 11)) { 621633f453db14b0fb91294887a9629f5cc2f95407fKarel Zak if ((label_len = figure_label_len(vol_label, 11))) 622633f453db14b0fb91294887a9629f5cc2f95407fKarel Zak label = vol_label; 623e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o } 624e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 625e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o /* We can't just print them as %04X, because they are unaligned */ 626038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o sprintf(serno, "%02X%02X-%02X%02X", vol_serno[3], vol_serno[2], 627038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o vol_serno[1], vol_serno[0]); 628038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o 629ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", (const char *) label, label_len); 630ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "UUID", serno, sizeof(serno)-1); 631e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 632e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return 0; 633e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o} 634e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 635c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak/* 636c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak * The FAT filesystem could be without a magic string in superblock 637c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak * (e.g. old floppies). This heuristic for FAT detection is inspired 638c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak * by http://vrfy.org/projects/volume_id/ and Linux kernel. 639c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak * [7-Jul-2005, Karel Zak <kzak@redhat.com>] 640c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak */ 641ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_fat_nomagic(struct blkid_probe *probe, 642efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 643038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o unsigned char *buf) 644c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak{ 64578d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o struct msdos_super_block *ms; 646c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak 64778d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o ms = (struct msdos_super_block *)buf; 648c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak 649c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak /* heads check */ 65078d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o if (ms->ms_heads == 0) 651c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak return 1; 652c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak 653efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o /* cluster size check*/ 65478d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o if (ms->ms_cluster_size == 0 || 65578d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o (ms->ms_cluster_size & (ms->ms_cluster_size-1))) 656c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak return 1; 657c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak 658c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak /* media check */ 65978d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o if (ms->ms_media < 0xf8 && ms->ms_media != 0xf0) 660c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak return 1; 661c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak 662c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak /* fat counts(Linux kernel expects at least 1 FAT table) */ 66378d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o if (!ms->ms_fats) 66478d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o return 1; 66578d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o 66678d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o /* 66778d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o * OS/2 and apparently DFSee will place a FAT12/16-like 66878d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o * pseudo-superblock in the first 512 bytes of non-FAT 66978d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o * filesystems --- at least JFS and HPFS, and possibly others. 67078d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o * So we explicitly check for those filesystems at the 67178d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o * FAT12/16 filesystem magic field identifier, and if they are 67278d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o * present, we rule this out as a FAT filesystem, despite the 67378d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o * FAT-like pseudo-header. 67478d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o */ 67578d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o if ((memcmp(ms->ms_magic, "JFS ", 8) == 0) || 67678d89cda680498957e4ad78602751d1f905cee08Theodore Ts'o (memcmp(ms->ms_magic, "HPFS ", 8) == 0)) 677c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak return 1; 678c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak 679ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o return probe_fat(probe, id, buf); 680c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak} 681c4c740ff488dae232dd3a64fccd26ec7265165a4Karel Zak 682cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'ostatic int probe_ntfs(struct blkid_probe *probe, 683efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 684cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o unsigned char *buf) 685cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o{ 686cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o struct ntfs_super_block *ns; 687cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o struct master_file_table_record *mft; 688cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o struct file_attribute *attr; 689cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o char uuid_str[17], label_str[129], *cp; 690cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o int bytes_per_sector, sectors_per_cluster; 691cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o int mft_record_size, attr_off, attr_len; 692cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o unsigned int i, attr_type, val_len; 693cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o int val_off; 694cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o __u64 nr_clusters; 695cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o blkid_loff_t off; 696cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o unsigned char *buf_mft, *val; 697cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 698cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o ns = (struct ntfs_super_block *) buf; 699cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 700cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o bytes_per_sector = ns->bios_parameter_block[0] + 701cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o (ns->bios_parameter_block[1] << 8); 702cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o sectors_per_cluster = ns->bios_parameter_block[2]; 703cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 70430dd2622353b9fde462c9112fb0c863620a3bf91Theodore Ts'o if ((bytes_per_sector < 512) || (sectors_per_cluster == 0)) 70530dd2622353b9fde462c9112fb0c863620a3bf91Theodore Ts'o return 1; 70630dd2622353b9fde462c9112fb0c863620a3bf91Theodore Ts'o 707cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (ns->cluster_per_mft_record < 0) 70830dd2622353b9fde462c9112fb0c863620a3bf91Theodore Ts'o mft_record_size = 1 << (0-ns->cluster_per_mft_record); 709cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o else 710efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o mft_record_size = ns->cluster_per_mft_record * 711cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o sectors_per_cluster * bytes_per_sector; 712cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o nr_clusters = blkid_le64(ns->number_of_sectors) / sectors_per_cluster; 713cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 714cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if ((blkid_le64(ns->mft_cluster_location) > nr_clusters) || 715cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o (blkid_le64(ns->mft_mirror_cluster_location) > nr_clusters)) 716cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o return 1; 717cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 718efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o off = blkid_le64(ns->mft_mirror_cluster_location) * 719cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o bytes_per_sector * sectors_per_cluster; 720cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 721cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o buf_mft = get_buffer(probe, off, mft_record_size); 722cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (!buf_mft) 723cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o return 1; 724cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 725cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (memcmp(buf_mft, "FILE", 4)) 726cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o return 1; 727cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 728efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o off = blkid_le64(ns->mft_cluster_location) * bytes_per_sector * 729cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o sectors_per_cluster; 730cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 731cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o buf_mft = get_buffer(probe, off, mft_record_size); 732cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (!buf_mft) 733cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o return 1; 734cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 735cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (memcmp(buf_mft, "FILE", 4)) 736cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o return 1; 737cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 738cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o off += MFT_RECORD_VOLUME * mft_record_size; 739cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 740cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o buf_mft = get_buffer(probe, off, mft_record_size); 741cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (!buf_mft) 742cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o return 1; 743cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 744cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (memcmp(buf_mft, "FILE", 4)) 745cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o return 1; 746cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 747cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o mft = (struct master_file_table_record *) buf_mft; 748cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 749cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o attr_off = blkid_le16(mft->attrs_offset); 750cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o label_str[0] = 0; 751efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 752cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o while (1) { 753cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o attr = (struct file_attribute *) (buf_mft + attr_off); 754cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o attr_len = blkid_le16(attr->len); 755cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o attr_type = blkid_le32(attr->type); 756cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o val_off = blkid_le16(attr->value_offset); 757cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o val_len = blkid_le32(attr->value_len); 758cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 759cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o attr_off += attr_len; 760cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 761cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if ((attr_off > mft_record_size) || 762cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o (attr_len == 0)) 763cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o break; 764cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 765cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (attr_type == MFT_RECORD_ATTR_END) 766cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o break; 767cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 768cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (attr_type == MFT_RECORD_ATTR_VOLUME_NAME) { 769cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (val_len > sizeof(label_str)) 770cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o val_len = sizeof(label_str)-1; 771cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 772cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o for (i=0, cp=label_str; i < val_len; i+=2,cp++) { 773cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o val = ((__u8 *) attr) + val_off + i; 774cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o *cp = val[0]; 775cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (val[1]) 776cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o *cp = '?'; 777cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o } 778cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o *cp = 0; 779cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o } 780cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o } 781cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 782c40ad3674c9d2f0709cbe8f2f607633f25c4bb4bPixel sprintf(uuid_str, "%016llX", blkid_le64(ns->volume_serial)); 783cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o blkid_set_tag(probe->dev, "UUID", uuid_str, 0); 784cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o if (label_str[0]) 785cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", label_str, 0); 786cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o return 0; 787cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o} 788cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 789cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o 790ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_xfs(struct blkid_probe *probe, 791efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 792544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o unsigned char *buf) 793e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o{ 794e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o struct xfs_super_block *xs; 795a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o const char *label = 0; 796e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 797e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o xs = (struct xfs_super_block *)buf; 798e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 799e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o if (strlen(xs->xs_fname)) 800a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o label = xs->xs_fname; 801ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", label, sizeof(xs->xs_fname)); 802ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o set_uuid(probe->dev, xs->xs_uuid, 0); 803e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return 0; 804e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o} 805e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 806ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_reiserfs(struct blkid_probe *probe, 80779dd234a799434b6dc8365c49e743f00eb09d2fdTheodore Ts'o struct blkid_magic *id, unsigned char *buf) 808e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o{ 80950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o struct reiserfs_super_block *rs = (struct reiserfs_super_block *) buf; 810e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o unsigned int blocksize; 811a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o const char *label = 0; 812e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 81376b07bb1bc9cbcb70a94cb235954eaac993920adTheodore Ts'o blocksize = blkid_le16(rs->rs_blocksize); 814e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 8154dc30dac2c2732e25765984263a3ecafd8c66932Theodore Ts'o /* The blocksize must be at least 1k */ 8164dc30dac2c2732e25765984263a3ecafd8c66932Theodore Ts'o if ((blocksize >> 10) == 0) 8174dc30dac2c2732e25765984263a3ecafd8c66932Theodore Ts'o return -BLKID_ERR_PARAM; 8184dc30dac2c2732e25765984263a3ecafd8c66932Theodore Ts'o 819e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o /* If the superblock is inside the journal, we have the wrong one */ 82050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (id->bim_kboff/(blocksize>>10) > blkid_le32(rs->rs_journal_block)) 821e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return -BLKID_ERR_BIG; 822e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 823e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o /* LABEL/UUID are only valid for later versions of Reiserfs v3.6. */ 824ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (id->bim_magic[6] == '2' || id->bim_magic[6] == '3') { 825a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o if (strlen(rs->rs_label)) 826a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o label = rs->rs_label; 827ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o set_uuid(probe->dev, rs->rs_uuid, 0); 828e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o } 829ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", label, sizeof(rs->rs_label)); 830e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 831e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return 0; 832e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o} 833e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 834ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_reiserfs4(struct blkid_probe *probe, 835efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 836ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o unsigned char *buf) 837bb626bcd546a039b39b9f25e65881b36b2abe24fTheodore Ts'o{ 838bb626bcd546a039b39b9f25e65881b36b2abe24fTheodore Ts'o struct reiser4_super_block *rs4 = (struct reiser4_super_block *) buf; 839ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o const unsigned char *label = 0; 840bb626bcd546a039b39b9f25e65881b36b2abe24fTheodore Ts'o 841ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (strlen((char *) rs4->rs4_label)) 842bb626bcd546a039b39b9f25e65881b36b2abe24fTheodore Ts'o label = rs4->rs4_label; 843ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o set_uuid(probe->dev, rs4->rs4_uuid, 0); 844efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", (const char *) label, 845ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o sizeof(rs4->rs4_label)); 846bb626bcd546a039b39b9f25e65881b36b2abe24fTheodore Ts'o 847bb626bcd546a039b39b9f25e65881b36b2abe24fTheodore Ts'o return 0; 848bb626bcd546a039b39b9f25e65881b36b2abe24fTheodore Ts'o} 849bb626bcd546a039b39b9f25e65881b36b2abe24fTheodore Ts'o 850ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_jfs(struct blkid_probe *probe, 851efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 852544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o unsigned char *buf) 85309a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o{ 85409a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o struct jfs_super_block *js; 855a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o const char *label = 0; 85609a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o 85709a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o js = (struct jfs_super_block *)buf; 85809a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o 859478360f50b68356849813f97db46fd156da5248eTheodore Ts'o if (blkid_le32(js->js_bsize) != (1U << blkid_le16(js->js_l2bsize))) 860b41fb002257d4b997560cd77676b78219be03c24Theodore Ts'o return 1; 861b41fb002257d4b997560cd77676b78219be03c24Theodore Ts'o 862478360f50b68356849813f97db46fd156da5248eTheodore Ts'o if (blkid_le32(js->js_pbsize) != (1U << blkid_le16(js->js_l2pbsize))) 863b41fb002257d4b997560cd77676b78219be03c24Theodore Ts'o return 1; 864b41fb002257d4b997560cd77676b78219be03c24Theodore Ts'o 865b41fb002257d4b997560cd77676b78219be03c24Theodore Ts'o if ((blkid_le16(js->js_l2bsize) - blkid_le16(js->js_l2pbsize)) != 866b41fb002257d4b997560cd77676b78219be03c24Theodore Ts'o blkid_le16(js->js_l2bfactor)) 867b41fb002257d4b997560cd77676b78219be03c24Theodore Ts'o return 1; 868b41fb002257d4b997560cd77676b78219be03c24Theodore Ts'o 86948e6e81362f264aee4f3945c14928efaf71a06c9Theodore Ts'o if (strlen((char *) js->js_label)) 870a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o label = (char *) js->js_label; 871ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", label, sizeof(js->js_label)); 872ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o set_uuid(probe->dev, js->js_uuid, 0); 87309a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o return 0; 87409a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o} 87509a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o 87625f291c9b32d8017e6969c72a75e37d354c0570bTheodore Ts'ostatic int probe_zfs(struct blkid_probe *probe __BLKID_ATTR((unused)), 87725f291c9b32d8017e6969c72a75e37d354c0570bTheodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 87825f291c9b32d8017e6969c72a75e37d354c0570bTheodore Ts'o unsigned char *buf __BLKID_ATTR((unused))) 879c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia{ 88079e62409b3a247e258d9e9206484ed8f193a183eEric Sandeen#if 0 881c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia char *vdev_label; 882c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia const char *pool_name = 0; 883c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia 884c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia /* read nvpair data for pool name, pool GUID (complex) */ 885c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia blkid_set_tag(probe->dev, "LABEL", pool_name, sizeof(pool_name)); 886c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia set_uuid(probe->dev, pool_guid, 0); 887c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia#endif 888c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia return 0; 889c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia} 890c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia 891e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hoppstatic int probe_luks(struct blkid_probe *probe, 892e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp struct blkid_magic *id __BLKID_ATTR((unused)), 893e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp unsigned char *buf) 894e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp{ 895d4e0b1c6f5aa8c6a248d9149ed5634a310952411Theodore Ts'o char uuid[40]; 896d4e0b1c6f5aa8c6a248d9149ed5634a310952411Theodore Ts'o 897e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp /* 168 is the offset to the 40 character uuid: 898e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp * http://luks.endorphin.org/LUKS-on-disk-format.pdf */ 899d4e0b1c6f5aa8c6a248d9149ed5634a310952411Theodore Ts'o strncpy(uuid, (char *) buf+168, 40); 900e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp blkid_set_tag(probe->dev, "UUID", uuid, sizeof(uuid)); 901e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp return 0; 902e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp} 903e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp 904ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_romfs(struct blkid_probe *probe, 905efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 906544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o unsigned char *buf) 90709a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o{ 90809a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o struct romfs_super_block *ros; 909a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o const char *label = 0; 91009a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o 91109a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o ros = (struct romfs_super_block *)buf; 91209a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o 913a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o if (strlen((char *) ros->ros_volume)) 914a30b9446d1899260159968826428722f2dcbbc64Theodore Ts'o label = (char *) ros->ros_volume; 915ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", label, 0); 9167369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o return 0; 9177369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o} 9187369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o 919ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_cramfs(struct blkid_probe *probe, 920efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 921ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o unsigned char *buf) 9224c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o{ 9234c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o struct cramfs_super_block *csb; 9244c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o const char *label = 0; 9254c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o 9264c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o csb = (struct cramfs_super_block *)buf; 9274c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o 9284c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o if (strlen((char *) csb->name)) 9294c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o label = (char *) csb->name; 930ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", label, 0); 9314c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o return 0; 9324c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o} 9334c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o 934ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_swap0(struct blkid_probe *probe, 9357369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 9367369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o unsigned char *buf __BLKID_ATTR((unused))) 9377369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o{ 938ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "UUID", 0, 0); 939ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", 0, 0); 9407369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o return 0; 9417369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o} 9427369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o 943ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_swap1(struct blkid_probe *probe, 9446360d129d003f25942f62fab2cdc5e1d97cc88a6Eric Sandeen struct blkid_magic *id, 9457369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o unsigned char *buf __BLKID_ATTR((unused))) 9467369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o{ 9477369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o struct swap_id_block *sws; 9487369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o 949ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o probe_swap0(probe, id, buf); 9507369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o /* 9517369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o * Version 1 swap headers are always located at offset of 1024 9527369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o * bytes, although the swap signature itself is located at the 9537369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o * end of the page (which may vary depending on hardware 9547369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o * pagesize). 9557369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o */ 956ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o sws = (struct swap_id_block *) get_buffer(probe, 1024, 1024); 957ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (!sws) 9587369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o return 1; 9597369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o 9606360d129d003f25942f62fab2cdc5e1d97cc88a6Eric Sandeen /* check for wrong version or zeroed pagecount, for sanity */ 9616360d129d003f25942f62fab2cdc5e1d97cc88a6Eric Sandeen if (!memcmp(id->bim_magic, "SWAPSPACE2", id->bim_len) && 96222269b8b60da320b3c27ea8d053f9e2b0fbe2ae2Eric Sandeen (sws->sws_version != 1 || sws->sws_lastpage == 0)) 9636360d129d003f25942f62fab2cdc5e1d97cc88a6Eric Sandeen return 1; 9646360d129d003f25942f62fab2cdc5e1d97cc88a6Eric Sandeen 9657369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o /* arbitrary sanity check.. is there any garbage down there? */ 9667369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o if (sws->sws_pad[32] == 0 && sws->sws_pad[33] == 0) { 9677369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o if (sws->sws_volume[0]) 968efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", sws->sws_volume, 9697369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o sizeof(sws->sws_volume)); 9707369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o if (sws->sws_uuid[0]) 971ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o set_uuid(probe->dev, sws->sws_uuid, 0); 9727369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o } 97309a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o return 0; 97409a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o} 97509a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o 976ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_iso9660(struct blkid_probe *probe, 977efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 97845a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o unsigned char *buf) 97945a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o{ 98045a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o struct iso_volume_descriptor *iso; 98145a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o const unsigned char *label; 98245a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o 98345a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o iso = (struct iso_volume_descriptor *) buf; 98445a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o label = iso->volume_id; 98545a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o 986efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", (const char *) label, 987ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o figure_label_len(label, 32)); 98845a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o return 0; 98945a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o} 99045a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o 99145a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o 992544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'ostatic const char 9933de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o*udf_magic[] = { "BEA01", "BOOT2", "CD001", "CDW02", "NSR02", 9943de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o "NSR03", "TEA01", 0 }; 9953de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o 996ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_udf(struct blkid_probe *probe, 997efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 998544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o unsigned char *buf __BLKID_ATTR((unused))) 9993de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o{ 10003de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o int j, bs; 1001ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o struct iso_volume_descriptor *isosb; 1002544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o const char ** m; 10033de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o 10043de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o /* determine the block size by scanning in 2K increments 10053de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o (block sizes larger than 2K will be null padded) */ 10063de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o for (bs = 1; bs < 16; bs++) { 1007efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o isosb = (struct iso_volume_descriptor *) 1008d1da14b5b0496621046179e5644cc924ce01dae1Theodore Ts'o get_buffer(probe, (blkid_loff_t) bs*2048+32768, 1009d1da14b5b0496621046179e5644cc924ce01dae1Theodore Ts'o sizeof(*isosb)); 1010ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (!isosb) 10113de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o return 1; 1012ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (isosb->vd_id[0]) 10133de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o break; 10143de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o } 10153de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o 10163de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o /* Scan up to another 64 blocks looking for additional VSD's */ 10173de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o for (j = 1; j < 64; j++) { 10183de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o if (j > 1) { 1019efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o isosb = (struct iso_volume_descriptor *) 1020efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o get_buffer(probe, j*bs*2048+32768, 102175954ccf2a4fb2a5da632e7988450afee5e02509Theodore Ts'o sizeof(*isosb)); 1022ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (!isosb) 10233de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o return 1; 10243de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o } 10253de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o /* If we find NSR0x then call it udf: 10263de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o NSR01 for UDF 1.00 10273de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o NSR02 for UDF 1.50 10283de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o NSR03 for UDF 2.00 */ 102949487b79da9ccc4a5f9d4e8f08c10ec9c8185a90Theodore Ts'o if (!memcmp(isosb->vd_id, "NSR0", 4)) 1030a4045c21a30ddf36528b0b1fc0cc6e4fffb33ce6Theodore Ts'o return probe_iso9660(probe, id, buf); 10313de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o for (m = udf_magic; *m; m++) 103249487b79da9ccc4a5f9d4e8f08c10ec9c8185a90Theodore Ts'o if (!memcmp(*m, isosb->vd_id, 5)) 10333de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o break; 10343de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o if (*m == 0) 10353de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o return 1; 10363de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o } 10373de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o return 1; 10383de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o} 10393de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o 1040ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_ocfs(struct blkid_probe *probe, 1041efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 10429387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o unsigned char *buf) 10439387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o{ 10449387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o struct ocfs_volume_header ovh; 10459387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o struct ocfs_volume_label ovl; 10463838f7df134035089e8e8df317112e4fd645602dTheodore Ts'o __u32 major; 10479387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o 10489387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o memcpy(&ovh, buf, sizeof(ovh)); 10499387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o memcpy(&ovl, buf+512, sizeof(ovl)); 10509387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o 10519387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o major = ocfsmajor(ovh); 10529387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o if (major == 1) 1053ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev,"SEC_TYPE","ocfs1",sizeof("ocfs1")); 10549387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o else if (major >= 9) 1055ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev,"SEC_TYPE","ntocfs",sizeof("ntocfs")); 1056efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 1057ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", ovl.label, ocfslabellen(ovl)); 1058ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "MOUNT", ovh.mount, ocfsmountlen(ovh)); 1059ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o set_uuid(probe->dev, ovl.vol_id, 0); 10609387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o return 0; 10619387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o} 10629387c281ef88cd1fba7cb1c9336b5ab00a2d82b4Theodore Ts'o 1063ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_ocfs2(struct blkid_probe *probe, 1064efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 10652c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o unsigned char *buf) 1066414846b126d4d751bd6b36df0a39dcb030e0feb3Theodore Ts'o{ 1067414846b126d4d751bd6b36df0a39dcb030e0feb3Theodore Ts'o struct ocfs2_super_block *osb; 1068414846b126d4d751bd6b36df0a39dcb030e0feb3Theodore Ts'o 1069414846b126d4d751bd6b36df0a39dcb030e0feb3Theodore Ts'o osb = (struct ocfs2_super_block *)buf; 1070414846b126d4d751bd6b36df0a39dcb030e0feb3Theodore Ts'o 1071ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", osb->s_label, sizeof(osb->s_label)); 1072ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o set_uuid(probe->dev, osb->s_uuid, 0); 1073414846b126d4d751bd6b36df0a39dcb030e0feb3Theodore Ts'o return 0; 1074414846b126d4d751bd6b36df0a39dcb030e0feb3Theodore Ts'o} 1075414846b126d4d751bd6b36df0a39dcb030e0feb3Theodore Ts'o 1076ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'ostatic int probe_oracleasm(struct blkid_probe *probe, 1077efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 10782c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o unsigned char *buf) 10792c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o{ 10802c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o struct oracle_asm_disk_label *dl; 10812c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o 10822c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o dl = (struct oracle_asm_disk_label *)buf; 10832c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o 1084ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", dl->dl_id, sizeof(dl->dl_id)); 10852c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o return 0; 10862c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o} 10872c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o 1088b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zakstatic int probe_gfs(struct blkid_probe *probe, 1089b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak struct blkid_magic *id __BLKID_ATTR((unused)), 1090b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak unsigned char *buf) 1091b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak{ 1092b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak struct gfs2_sb *sbd; 1093b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak const char *label = 0; 1094b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak 1095b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak sbd = (struct gfs2_sb *)buf; 1096b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak 1097b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak if (blkid_be32(sbd->sb_fs_format) == GFS_FORMAT_FS && 1098b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak blkid_be32(sbd->sb_multihost_format) == GFS_FORMAT_MULTI) 1099efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o { 1100b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak blkid_set_tag(probe->dev, "UUID", 0, 0); 1101efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 1102b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak if (strlen(sbd->sb_locktable)) 1103b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak label = sbd->sb_locktable; 1104b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak blkid_set_tag(probe->dev, "LABEL", label, sizeof(sbd->sb_locktable)); 1105b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak return 0; 1106b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak } 1107b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak return 1; 1108b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak} 1109b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak 1110b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zakstatic int probe_gfs2(struct blkid_probe *probe, 1111b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak struct blkid_magic *id __BLKID_ATTR((unused)), 1112b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak unsigned char *buf) 1113b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak{ 1114b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak struct gfs2_sb *sbd; 1115b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak const char *label = 0; 1116b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak 1117b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak sbd = (struct gfs2_sb *)buf; 1118b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak 1119b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak if (blkid_be32(sbd->sb_fs_format) == GFS2_FORMAT_FS && 1120b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak blkid_be32(sbd->sb_multihost_format) == GFS2_FORMAT_MULTI) 1121efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o { 1122b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak blkid_set_tag(probe->dev, "UUID", 0, 0); 1123efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 1124b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak if (strlen(sbd->sb_locktable)) 1125b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak label = sbd->sb_locktable; 1126b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak blkid_set_tag(probe->dev, "LABEL", label, sizeof(sbd->sb_locktable)); 1127b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak return 0; 1128b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak } 1129b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak return 1; 1130b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak} 1131b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak 1132efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'ostatic void unicode_16be_to_utf8(unsigned char *str, int out_len, 1133d56ccbd8f97e90d34a2b18a45fbd6681d3dba726Theodore Ts'o const unsigned char *buf, int in_len) 11349c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o{ 11359c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o int i, j; 11369c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int c; 11379c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 11389c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o for (i = j = 0; i + 2 <= in_len; i += 2) { 11399c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o c = (buf[i] << 8) | buf[i+1]; 11409c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (c == 0) { 11419c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o str[j] = '\0'; 11429c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o break; 11439c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o } else if (c < 0x80) { 11449c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (j+1 >= out_len) 11459c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o break; 11469c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o str[j++] = (unsigned char) c; 11479c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o } else if (c < 0x800) { 11489c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (j+2 >= out_len) 11499c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o break; 11509c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o str[j++] = (unsigned char) (0xc0 | (c >> 6)); 11519c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o str[j++] = (unsigned char) (0x80 | (c & 0x3f)); 11529c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o } else { 11539c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (j+3 >= out_len) 11549c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o break; 11559c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o str[j++] = (unsigned char) (0xe0 | (c >> 12)); 11569c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o str[j++] = (unsigned char) (0x80 | ((c >> 6) & 0x3f)); 11579c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o str[j++] = (unsigned char) (0x80 | (c & 0x3f)); 11589c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o } 11599c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o } 11609c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o str[j] = '\0'; 11619c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o} 11629c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 11639c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'ostatic int probe_hfs(struct blkid_probe *probe __BLKID_ATTR((unused)), 116469d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 116569d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o unsigned char *buf) 116669d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o{ 116700eb0eee0addfd3b7ede98b85e00dff1547838a0Andreas Dilger struct hfs_mdb *hfs = (struct hfs_mdb *)buf; 116800eb0eee0addfd3b7ede98b85e00dff1547838a0Andreas Dilger unsigned long long *uuid_ptr; 11699c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o char uuid_str[17]; 11709c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o __u64 uuid; 11719c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 11729c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if ((memcmp(hfs->embed_sig, "H+", 2) == 0) || 11739c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o (memcmp(hfs->embed_sig, "HX", 2) == 0)) 11749c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 1; /* Not hfs, but an embedded HFS+ */ 11759c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 117600eb0eee0addfd3b7ede98b85e00dff1547838a0Andreas Dilger uuid_ptr = (unsigned long long *)hfs->finder_info.id; 117700eb0eee0addfd3b7ede98b85e00dff1547838a0Andreas Dilger uuid = blkid_le64(*uuid_ptr); 11789c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (uuid) { 11799c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o sprintf(uuid_str, "%016llX", uuid); 11809c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o blkid_set_tag(probe->dev, "UUID", uuid_str, 0); 11819c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o } 1182cf5301d7f2c3bbed3d26600335102414cbf0c4baAndreas Dilger blkid_set_tag(probe->dev, "LABEL", (char *)hfs->label, hfs->label_len); 11839c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 0; 11849c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o} 11859c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 11869c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 11879c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'ostatic int probe_hfsplus(struct blkid_probe *probe, 11889c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o struct blkid_magic *id, 11899c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned char *buf) 11909c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o{ 11919c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT]; 11929c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o struct hfsplus_bnode_descriptor *descr; 11939c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o struct hfsplus_bheader_record *bnode; 11949c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o struct hfsplus_catalog_key *key; 11959c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o struct hfsplus_vol_header *hfsplus; 11969c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o struct hfs_mdb *sbd = (struct hfs_mdb *) buf; 11979c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int alloc_block_size; 11989c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int alloc_first_block; 11999c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int embed_first_block; 12009c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int off = 0; 12019c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int blocksize; 12029c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int cat_block; 12039c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int ext_block_start; 12049c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int ext_block_count; 12059c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int record_count; 12069c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int leaf_node_head; 12079c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int leaf_node_count; 12089c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int leaf_node_size; 12099c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int leaf_block; 12109c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o unsigned int label_len; 121100eb0eee0addfd3b7ede98b85e00dff1547838a0Andreas Dilger unsigned long long *uuid_ptr; 12129c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o __u64 leaf_off, uuid; 12139c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o char uuid_str[17], label[512]; 121400eb0eee0addfd3b7ede98b85e00dff1547838a0Andreas Dilger int ext; 121569d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o 121669d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o /* Check for a HFS+ volume embedded in a HFS volume */ 12179c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (memcmp(sbd->signature, "BD", 2) == 0) { 12189c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if ((memcmp(sbd->embed_sig, "H+", 2) != 0) && 12199c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o (memcmp(sbd->embed_sig, "HX", 2) != 0)) 12209c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o /* This must be an HFS volume, so fail */ 12219c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 1; 1222efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 12239c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o alloc_block_size = blkid_be32(sbd->al_blk_size); 12249c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o alloc_first_block = blkid_be16(sbd->al_bl_st); 12259c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o embed_first_block = blkid_be16(sbd->embed_startblock); 12269c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o off = (alloc_first_block * 512) + 12279c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o (embed_first_block * alloc_block_size); 12289c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o buf = get_buffer(probe, off + (id->bim_kboff * 1024), 122975954ccf2a4fb2a5da632e7988450afee5e02509Theodore Ts'o sizeof(*sbd)); 12309c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (!buf) 12319c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 1; 12329c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12339c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o hfsplus = (struct hfsplus_vol_header *) buf; 12349c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o } 12359c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12369c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o hfsplus = (struct hfsplus_vol_header *) buf; 12379c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12389c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if ((memcmp(hfsplus->signature, "H+", 2) != 0) && 12399c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o (memcmp(hfsplus->signature, "HX", 2) != 0)) 12409c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 1; 12419c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 124200eb0eee0addfd3b7ede98b85e00dff1547838a0Andreas Dilger uuid_ptr = (unsigned long long *)hfsplus->finder_info.id; 124300eb0eee0addfd3b7ede98b85e00dff1547838a0Andreas Dilger uuid = blkid_le64(*uuid_ptr); 12449c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (uuid) { 12459c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o sprintf(uuid_str, "%016llX", uuid); 12469c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o blkid_set_tag(probe->dev, "UUID", uuid_str, 0); 12479c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o } 12489c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12499c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o blocksize = blkid_be32(hfsplus->blocksize); 12509c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o memcpy(extents, hfsplus->cat_file.extents, sizeof(extents)); 12519c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o cat_block = blkid_be32(extents[0].start_block); 12529c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 1253d1da14b5b0496621046179e5644cc924ce01dae1Theodore Ts'o buf = get_buffer(probe, off + ((__u64) cat_block * blocksize), 0x2000); 12549c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (!buf) 125569d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o return 0; 125669d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o 12579c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o bnode = (struct hfsplus_bheader_record *) 12589c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o &buf[sizeof(struct hfsplus_bnode_descriptor)]; 12599c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12609c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o leaf_node_head = blkid_be32(bnode->leaf_head); 12619c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o leaf_node_size = blkid_be16(bnode->node_size); 12629c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o leaf_node_count = blkid_be32(bnode->leaf_count); 12639c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (leaf_node_count == 0) 12649c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 0; 12659c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12669c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o leaf_block = (leaf_node_head * leaf_node_size) / blocksize; 12679c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12689c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o /* get physical location */ 12699c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o for (ext = 0; ext < HFSPLUS_EXTENT_COUNT; ext++) { 12709c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o ext_block_start = blkid_be32(extents[ext].start_block); 12719c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o ext_block_count = blkid_be32(extents[ext].block_count); 12729c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (ext_block_count == 0) 12739c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 0; 12749c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12759c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o /* this is our extent */ 12769c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (leaf_block < ext_block_count) 12779c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o break; 12789c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12799c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o leaf_block -= ext_block_count; 12809c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o } 12819c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (ext == HFSPLUS_EXTENT_COUNT) 12829c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 0; 12839c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 1284d1da14b5b0496621046179e5644cc924ce01dae1Theodore Ts'o leaf_off = (__u64) (ext_block_start + leaf_block) * blocksize; 12859c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12869c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o buf = get_buffer(probe, off + leaf_off, leaf_node_size); 12879c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (!buf) 12889c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 0; 12899c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12909c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o descr = (struct hfsplus_bnode_descriptor *) buf; 12919c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o record_count = blkid_be16(descr->num_recs); 12929c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (record_count == 0) 12939c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 0; 12949c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12959c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (descr->type != HFS_NODE_LEAF) 12969c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 0; 12979c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 12989c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o key = (struct hfsplus_catalog_key *) 12999c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o &buf[sizeof(struct hfsplus_bnode_descriptor)]; 13009c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 13019c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o if (blkid_be32(key->parent_id) != HFSPLUS_POR_CNID) 13029c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 0; 13039c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o 13049c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o label_len = blkid_be16(key->unicode_len) * 2; 1305cf5301d7f2c3bbed3d26600335102414cbf0c4baAndreas Dilger unicode_16be_to_utf8((unsigned char *)label, sizeof(label), 1306cf5301d7f2c3bbed3d26600335102414cbf0c4baAndreas Dilger key->unicode, label_len); 13079c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o blkid_set_tag(probe->dev, "LABEL", label, 0); 13089c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o return 0; 130969d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o} 131069d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o 1311a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen#define LVM2_LABEL_SIZE 512 1312dd232049d19112d46d4b296c1b253ef05e9dc67cTheodore Ts'ostatic unsigned int lvm2_calc_crc(const void *buf, unsigned int size) 1313a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen{ 1314dd232049d19112d46d4b296c1b253ef05e9dc67cTheodore Ts'o static const unsigned int crctab[] = { 1315a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 1316a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, 1317a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 1318a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c 1319a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen }; 1320dd232049d19112d46d4b296c1b253ef05e9dc67cTheodore Ts'o unsigned int i, crc = 0xf597a6cf; 1321a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen const __u8 *data = (const __u8 *) buf; 1322a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 1323a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen for (i = 0; i < size; i++) { 1324a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen crc ^= *data++; 1325a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen crc = (crc >> 4) ^ crctab[crc & 0xf]; 1326a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen crc = (crc >> 4) ^ crctab[crc & 0xf]; 1327a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen } 1328a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen return crc; 1329a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen} 1330a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 1331a451d92f38188f7218a837a395b310354864b5a4Eric Sandeenstatic int probe_lvm2(struct blkid_probe *probe, 1332cc19b958602775ef48f347d16859ce6623a385daTheodore Ts'o struct blkid_magic *id, 1333a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen unsigned char *buf) 1334a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen{ 13358d45e2104cdebcd509810786756cfb2e40588620Theodore Ts'o int sector = (id->bim_kboff) << 1; 1336cc19b958602775ef48f347d16859ce6623a385daTheodore Ts'o struct lvm2_pv_label_header *label= (struct lvm2_pv_label_header *)buf; 1337a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen char *p, *q, uuid[40]; 1338a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen unsigned int i, b; 1339a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 1340a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen /* buf is at 0k or 1k offset; find label inside */ 1341a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen if (memcmp(buf, "LABELONE", 8) == 0) { 1342a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen label = (struct lvm2_pv_label_header *)buf; 1343a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen } else if (memcmp(buf + 512, "LABELONE", 8) == 0) { 1344a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen label = (struct lvm2_pv_label_header *)(buf + 512); 1345a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen sector++; 1346a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen } else { 1347a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen return 1; 1348a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen } 1349a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 13503a538e42441afa5e5b34942062acb976e0d345f6Theodore Ts'o if (blkid_le64(label->sector_xl) != (unsigned) sector) { 1351a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen DBG(DEBUG_PROBE, 13523a538e42441afa5e5b34942062acb976e0d345f6Theodore Ts'o printf("LVM2: label for sector %llu found at sector %d\n", 1353a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen blkid_le64(label->sector_xl), sector)); 1354a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen return 1; 1355a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen } 1356a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 1357a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen if (lvm2_calc_crc(&label->offset_xl, LVM2_LABEL_SIZE - 13583a538e42441afa5e5b34942062acb976e0d345f6Theodore Ts'o ((char *)&label->offset_xl - (char *)label)) != 1359a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen blkid_le32(label->crc_xl)) { 1360a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen DBG(DEBUG_PROBE, 1361a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen printf("LVM2: label checksum incorrect at sector %d\n", 1362a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen sector)); 1363a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen return 1; 1364a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen } 1365a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 13665d5576d8bbf196835ec89f53dc919738f49e23abTheodore Ts'o for (i=0, b=1, p=uuid, q= (char *) label->pv_uuid; i < LVM2_ID_LEN; 13673a538e42441afa5e5b34942062acb976e0d345f6Theodore Ts'o i++, b <<= 1) { 1368a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen if (b & 0x4444440) 1369a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen *p++ = '-'; 1370a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen *p++ = *q++; 1371a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen } 1372a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 1373a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen blkid_set_tag(probe->dev, "UUID", uuid, LVM2_ID_LEN+6); 1374a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen 1375a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen return 0; 1376a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen} 1377801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen 1378801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeenstatic int probe_btrfs(struct blkid_probe *probe, 137925f291c9b32d8017e6969c72a75e37d354c0570bTheodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 1380801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen unsigned char *buf) 1381801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen{ 1382801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen struct btrfs_super_block *bs; 1383801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen const char *label = 0; 1384801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen 1385801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen bs = (struct btrfs_super_block *)buf; 1386801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen 1387801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen if (strlen(bs->label)) 1388801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen label = bs->label; 1389801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen blkid_set_tag(probe->dev, "LABEL", label, sizeof(bs->label)); 1390801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen set_uuid(probe->dev, bs->fsid, 0); 1391801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen return 0; 1392801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen} 13937c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey 13947c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkeystatic int probe_f2fs(struct blkid_probe *probe, 1395478360f50b68356849813f97db46fd156da5248eTheodore Ts'o struct blkid_magic *id __BLKID_ATTR((unused)), 13967c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey unsigned char *buf) 13977c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey{ 13987c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey struct f2fs_super_block *bs; 13997c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey 14007c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey bs = (struct f2fs_super_block *)buf; 14017c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey set_uuid(probe->dev, bs->uuid, 0); 14027c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey return 0; 14037c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey} 14047c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey 14051206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghaostatic uint64_t exfat_block_to_offset(const struct exfat_super_block *sb, 14061206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uint64_t block) 14071206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao{ 14081206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return block << sb->block_bits; 14091206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao} 14101206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14111206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghaostatic uint64_t exfat_cluster_to_block(const struct exfat_super_block *sb, 14121206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uint32_t cluster) 14131206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao{ 14141206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return sb->cluster_block_start + 14151206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao ((uint64_t)(cluster - EXFAT_FIRST_DATA_CLUSTER) << sb->bpc_bits); 14161206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao} 14171206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14181206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghaostatic uint64_t exfat_cluster_to_offset(const struct exfat_super_block *sb, 14191206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uint32_t cluster) 14201206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao{ 14211206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return exfat_block_to_offset(sb, exfat_cluster_to_block(sb, cluster)); 14221206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao} 14231206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14241206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghaostatic uint32_t exfat_next_cluster(struct blkid_probe *probe, 14251206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao const struct exfat_super_block *sb, 14261206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uint32_t cluster) 14271206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao{ 14281206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uint32_t *next; 14291206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uint64_t offset; 14301206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14311206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao offset = exfat_block_to_offset(sb, sb->fat_block_start) 14321206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao + (uint64_t) cluster * sizeof (cluster); 14331206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao next = (uint32_t *)get_buffer(probe, offset, sizeof (uint32_t)); 14341206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14351206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return next ? *next : 0; 14361206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao} 14371206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14381206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghaostatic struct exfat_entry_label *find_exfat_entry_label( 14391206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao struct blkid_probe *probe, const struct exfat_super_block *sb) 14401206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao{ 14411206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uint32_t cluster = sb->rootdir_cluster; 14421206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uint64_t offset = exfat_cluster_to_offset(sb, cluster); 14431206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uint8_t *entry; 14441206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao const size_t max_iter = 10000; 14451206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao size_t i = 0; 14461206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14471206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao for (; i < max_iter; ++i) { 14481206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao entry = (uint8_t *)get_buffer(probe, offset, EXFAT_ENTRY_SIZE); 14491206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao if (!entry) 14501206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return NULL; 14511206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao if (entry[0] == EXFAT_ENTRY_EOD) 14521206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return NULL; 14531206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao if (entry[0] == EXFAT_ENTRY_LABEL) 14541206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return (struct exfat_entry_label*) entry; 14551206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14561206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao offset += EXFAT_ENTRY_SIZE; 14571206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao if (offset % CLUSTER_SIZE(sb) == 0) { 14581206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao cluster = exfat_next_cluster(probe, sb, cluster); 14591206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao if (cluster < EXFAT_FIRST_DATA_CLUSTER) 14601206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return NULL; 14611206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao if (cluster > EXFAT_LAST_DATA_CLUSTER) 14621206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return NULL; 14631206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao offset = exfat_cluster_to_offset(sb, cluster); 14641206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao } 14651206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao } 14661206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14671206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return NULL; 14681206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao} 14691206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14701206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghaostatic int probe_exfat(struct blkid_probe *probe, struct blkid_magic *id, 14711206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao unsigned char *buf) 14721206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao{ 14731206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao struct exfat_super_block *sb; 14741206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao struct exfat_entry_label *label; 14751206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao uuid_t uuid; 14761206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao sb = (struct exfat_super_block *)buf; 14771206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao if (!sb || !CLUSTER_SIZE(sb)) { 14781206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao DBG(DEBUG_PROBE, printf("bad exfat superblock.\n")); 14791206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return errno ? - errno : 1; 14801206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao } 14811206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14821206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao label = find_exfat_entry_label(probe, sb); 14831206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao if (label) { 14841206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao blkid_set_tag(probe->dev, "LABEL", label->name, label->length); 14851206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao } else { 14861206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao blkid_set_tag(probe->dev, "LABEL", "disk", 4); 14871206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao } 14881206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14891206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao snprintf(uuid, sizeof (uuid), "%02hhX%02hhX-%02hhX%02hhX", 14901206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao sb->volume_serial[3], sb->volume_serial[2], 14911206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao sb->volume_serial[1], sb->volume_serial[0]); 14921206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14931206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao set_uuid(probe->dev, uuid, 0); 14941206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 14951206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao return 0; 14961206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao} 14971206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao 1498e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o/* 1499e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * Various filesystem magics that we can check for. Note that kboff and 1500e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * sboff are in kilobytes and bytes respectively. All magics are in 1501e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * byte strings so we don't worry about endian issues. 1502e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o */ 150350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'ostatic struct blkid_magic type_array[] = { 150450b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o/* type kboff sboff len magic probe */ 15052c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o { "oracleasm", 0, 32, 8, "ORCLDISK", probe_oracleasm }, 1506cb0c5d701a8852f72fe75c9bd223643fb5222399Theodore Ts'o { "ntfs", 0, 3, 8, "NTFS ", probe_ntfs }, 150750b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "jbd", 1, 0x38, 2, "\123\357", probe_jbd }, 15082921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o { "ext4dev", 1, 0x38, 2, "\123\357", probe_ext4dev }, 15092921332fd88b843ffb828d9c18f05bfd171ace76Theodore Ts'o { "ext4", 1, 0x38, 2, "\123\357", probe_ext4 }, 15102e6a9febb48ea0e57d32cacb5e67220443c0e059Theodore Ts'o { "ext3", 1, 0x38, 2, "\123\357", probe_ext3 }, 151150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "ext2", 1, 0x38, 2, "\123\357", probe_ext2 }, 151250b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "reiserfs", 8, 0x34, 8, "ReIsErFs", probe_reiserfs }, 151350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "reiserfs", 64, 0x34, 9, "ReIsEr2Fs", probe_reiserfs }, 151450b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "reiserfs", 64, 0x34, 9, "ReIsEr3Fs", probe_reiserfs }, 151550b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "reiserfs", 64, 0x34, 8, "ReIsErFs", probe_reiserfs }, 151650b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "reiserfs", 8, 20, 8, "ReIsErFs", probe_reiserfs }, 1517bb626bcd546a039b39b9f25e65881b36b2abe24fTheodore Ts'o { "reiser4", 64, 0, 7, "ReIsEr4", probe_reiserfs4 }, 1518b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak { "gfs2", 64, 0, 4, "\x01\x16\x19\x70", probe_gfs2 }, 1519b5517ca6678d590b52f38ad701fbaf6c9716b73dKarel Zak { "gfs", 64, 0, 4, "\x01\x16\x19\x70", probe_gfs }, 1520038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o { "vfat", 0, 0x52, 5, "MSWIN", probe_fat }, 1521038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o { "vfat", 0, 0x52, 8, "FAT32 ", probe_fat }, 1522038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o { "vfat", 0, 0x36, 5, "MSDOS", probe_fat }, 1523038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o { "vfat", 0, 0x36, 8, "FAT16 ", probe_fat }, 1524038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o { "vfat", 0, 0x36, 8, "FAT12 ", probe_fat }, 1525846be6db813895c354cc54beaa8fa6aba8d98085Theodore Ts'o { "vfat", 0, 0, 1, "\353", probe_fat_nomagic }, 1526038d2bedaad526f91c9e4f55184bcaa59e245e27Theodore Ts'o { "vfat", 0, 0, 1, "\351", probe_fat_nomagic }, 1527846be6db813895c354cc54beaa8fa6aba8d98085Theodore Ts'o { "vfat", 0, 0x1fe, 2, "\125\252", probe_fat_nomagic }, 152850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "minix", 1, 0x10, 2, "\177\023", 0 }, 152950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "minix", 1, 0x10, 2, "\217\023", 0 }, 153050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "minix", 1, 0x10, 2, "\150\044", 0 }, 153150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "minix", 1, 0x10, 2, "\170\044", 0 }, 153250b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "vxfs", 1, 0, 4, "\365\374\001\245", 0 }, 153350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "xfs", 0, 0, 4, "XFSB", probe_xfs }, 153409a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o { "romfs", 0, 0, 8, "-rom1fs-", probe_romfs }, 153550b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "bfs", 0, 0, 4, "\316\372\173\033", 0 }, 15364c4e3f784330978fa127edaa3936957d38c7e93aTheodore Ts'o { "cramfs", 0, 0, 4, "E=\315\050", probe_cramfs }, 153750b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "qnx4", 0, 4, 6, "QNX4FS", 0 }, 15383de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o { "udf", 32, 1, 5, "BEA01", probe_udf }, 15393de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o { "udf", 32, 1, 5, "BOOT2", probe_udf }, 15403de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o { "udf", 32, 1, 5, "CD001", probe_udf }, 15413de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o { "udf", 32, 1, 5, "CDW02", probe_udf }, 15423de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o { "udf", 32, 1, 5, "NSR02", probe_udf }, 15433de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o { "udf", 32, 1, 5, "NSR03", probe_udf }, 15443de5bf61060634c5c8c3a0d231e8a7246094a2c2Theodore Ts'o { "udf", 32, 1, 5, "TEA01", probe_udf }, 154545a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o { "iso9660", 32, 1, 5, "CD001", probe_iso9660 }, 154645a3fa873852ce407b5eda0f764c63bab04e4c0cTheodore Ts'o { "iso9660", 32, 9, 5, "CDROM", probe_iso9660 }, 154709a2ef8ddab7fed91b9ec8314e0a10e11d3c0323Theodore Ts'o { "jfs", 32, 0, 4, "JFS1", probe_jfs }, 1548865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger /* ZFS has 128 root blocks (#4 is the first used), check only 6 of them */ 1549865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 128, 0, 8, "\0\0\0\0\0\xba\xb1\x0c", probe_zfs }, 1550865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 128, 0, 8, "\x0c\xb1\xba\0\0\0\0\0", probe_zfs }, 1551865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 132, 0, 8, "\0\0\0\0\0\xba\xb1\x0c", probe_zfs }, 1552865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 132, 0, 8, "\x0c\xb1\xba\0\0\0\0\0", probe_zfs }, 1553865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 136, 0, 8, "\0\0\0\0\0\xba\xb1\x0c", probe_zfs }, 1554865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 136, 0, 8, "\x0c\xb1\xba\0\0\0\0\0", probe_zfs }, 1555865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 384, 0, 8, "\0\0\0\0\0\xba\xb1\x0c", probe_zfs }, 1556865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 384, 0, 8, "\x0c\xb1\xba\0\0\0\0\0", probe_zfs }, 1557865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 388, 0, 8, "\0\0\0\0\0\xba\xb1\x0c", probe_zfs }, 1558865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 388, 0, 8, "\x0c\xb1\xba\0\0\0\0\0", probe_zfs }, 1559865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 392, 0, 8, "\0\0\0\0\0\xba\xb1\x0c", probe_zfs }, 1560865dc0d7534ca881dbe1e9fc9fd95792e7f3f0abAndreas Dilger { "zfs", 392, 0, 8, "\x0c\xb1\xba\0\0\0\0\0", probe_zfs }, 156169d742284d083c8f6ce7d9240019e21f2fbd9ed5Theodore Ts'o { "hfsplus", 1, 0, 2, "BD", probe_hfsplus }, 15629c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o { "hfsplus", 1, 0, 2, "H+", probe_hfsplus }, 15639c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o { "hfsplus", 1, 0, 2, "HX", probe_hfsplus }, 15649c460caae3dab7803c0e7d9399b47e790cf90661Theodore Ts'o { "hfs", 1, 0, 2, "BD", probe_hfs }, 156550b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "ufs", 8, 0x55c, 4, "T\031\001\000", 0 }, 156650b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "hpfs", 8, 0, 4, "I\350\225\371", 0 }, 156750b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { "sysv", 0, 0x3f8, 4, "\020~\030\375", 0 }, 15687369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0xff6, 10, "SWAP-SPACE", probe_swap0 }, 15697369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0xff6, 10, "SWAPSPACE2", probe_swap1 }, 1570abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0xff6, 9, "S1SUSPEND", probe_swap1 }, 1571abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0xff6, 9, "S2SUSPEND", probe_swap1 }, 157231e2a75484816db0e5e68afacb13beef7e751061Theodore Ts'o { "swsuspend", 0, 0xff6, 9, "ULSUSPEND", probe_swap1 }, 15737369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0x1ff6, 10, "SWAP-SPACE", probe_swap0 }, 15747369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0x1ff6, 10, "SWAPSPACE2", probe_swap1 }, 1575abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0x1ff6, 9, "S1SUSPEND", probe_swap1 }, 1576abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0x1ff6, 9, "S2SUSPEND", probe_swap1 }, 157731e2a75484816db0e5e68afacb13beef7e751061Theodore Ts'o { "swsuspend", 0, 0x1ff6, 9, "ULSUSPEND", probe_swap1 }, 15787369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0x3ff6, 10, "SWAP-SPACE", probe_swap0 }, 15797369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0x3ff6, 10, "SWAPSPACE2", probe_swap1 }, 1580abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0x3ff6, 9, "S1SUSPEND", probe_swap1 }, 1581abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0x3ff6, 9, "S2SUSPEND", probe_swap1 }, 158231e2a75484816db0e5e68afacb13beef7e751061Theodore Ts'o { "swsuspend", 0, 0x3ff6, 9, "ULSUSPEND", probe_swap1 }, 15837369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0x7ff6, 10, "SWAP-SPACE", probe_swap0 }, 15847369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0x7ff6, 10, "SWAPSPACE2", probe_swap1 }, 1585abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0x7ff6, 9, "S1SUSPEND", probe_swap1 }, 1586abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0x7ff6, 9, "S2SUSPEND", probe_swap1 }, 158731e2a75484816db0e5e68afacb13beef7e751061Theodore Ts'o { "swsuspend", 0, 0x7ff6, 9, "ULSUSPEND", probe_swap1 }, 15887369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0xfff6, 10, "SWAP-SPACE", probe_swap0 }, 15897369f0ce5fdde7f8a1cc6e49211469b905c2c58fTheodore Ts'o { "swap", 0, 0xfff6, 10, "SWAPSPACE2", probe_swap1 }, 1590abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0xfff6, 9, "S1SUSPEND", probe_swap1 }, 1591abaa11240a742bcfc4783e2cbebb7dd0cdf17e96Karel Zak { "swsuspend", 0, 0xfff6, 9, "S2SUSPEND", probe_swap1 }, 159231e2a75484816db0e5e68afacb13beef7e751061Theodore Ts'o { "swsuspend", 0, 0xfff6, 9, "ULSUSPEND", probe_swap1 }, 15932c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o { "ocfs", 0, 8, 9, "OracleCFS", probe_ocfs }, 15942c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o { "ocfs2", 1, 0, 6, "OCFSV2", probe_ocfs2 }, 15952c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o { "ocfs2", 2, 0, 6, "OCFSV2", probe_ocfs2 }, 15962c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o { "ocfs2", 4, 0, 6, "OCFSV2", probe_ocfs2 }, 15972c92375ea426768a6e37faf876b2b06f0bf781a6Theodore Ts'o { "ocfs2", 8, 0, 6, "OCFSV2", probe_ocfs2 }, 1598e382a7eaded3ec6b38114988ae9b0723bb48002aKarsten Hopp { "crypt_LUKS", 0, 0, 6, "LUKS\xba\xbe", probe_luks }, 1599f493d4e0ac93a5c500a2e9360a2398a8637895b6Eric Sandeen { "squashfs", 0, 0, 4, "sqsh", 0 }, 16005845efd1238081e48b0fc37e8bb55c87a0a537bfEric Sandeen { "squashfs", 0, 0, 4, "hsqs", 0 }, 1601a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen { "lvm2pv", 0, 0x218, 8, "LVM2 001", probe_lvm2 }, 1602a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen { "lvm2pv", 0, 0x018, 8, "LVM2 001", probe_lvm2 }, 1603a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen { "lvm2pv", 1, 0x018, 8, "LVM2 001", probe_lvm2 }, 1604a451d92f38188f7218a837a395b310354864b5a4Eric Sandeen { "lvm2pv", 1, 0x218, 8, "LVM2 001", probe_lvm2 }, 1605801b0053336cc5fe5b3447ddad58505352a6578eEric Sandeen { "btrfs", 64, 0x40, 8, "_BHRfS_M", probe_btrfs }, 16067c33c8899faa9b8250d5190ca8417f47daf3ba7bJeff Sharkey { "f2fs", 1, 0, 4, "\x10\x20\xf5\xf2", probe_f2fs }, 16071206f6d8c5ed47ba19cfc30a19dba51fcd2cd5cbliminghao { "exfat", 0, 3, 8, "EXFAT ", probe_exfat }, 160850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o { NULL, 0, 0, 0, NULL, NULL } 1609e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o}; 1610e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 1611e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o/* 1612e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * Verify that the data in dev is consistent with what is on the actual 1613e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * block device (using the devname field only). Normally this will be 1614e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * called when finding items in the cache, but for long running processes 1615e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * is also desirable to revalidate an item before use. 1616e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * 1617e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * If we are unable to revalidate the data, we return the old data and 1618e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o * do not set the BLKID_BID_FL_VERIFIED flag on it. 1619e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o */ 162018d12963335b04a402d097af1d714e8708805adaTheodore Ts'oblkid_dev blkid_verify(blkid_cache cache, blkid_dev dev) 1621e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o{ 1622e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o struct blkid_magic *id; 1623ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o struct blkid_probe probe; 1624ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o blkid_tag_iterate iter; 1625ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o unsigned char *buf; 1626ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o const char *type, *value; 162750b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o struct stat st; 162862bc8d19bdc640fe490ce2489c14591b5d356675Jeff Sharkey time_t now; 162962bc8d19bdc640fe490ce2489c14591b5d356675Jeff Sharkey double diff; 1630ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o int idx; 1631e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 1632e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o if (!dev) 1633e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return NULL; 1634e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 16357ce08064061ed66647fa2c152c65f2f28eac9a0aTheodore Ts'o now = time(0); 163662bc8d19bdc640fe490ce2489c14591b5d356675Jeff Sharkey diff = difftime(now, dev->bid_time); 1637e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 1638492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o if (stat(dev->bid_name, &st) < 0) { 1639492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o DBG(DEBUG_PROBE, 1640492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o printf("blkid_verify: error %s (%d) while " 1641492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o "trying to stat %s\n", strerror(errno), errno, 1642492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o dev->bid_name)); 1643492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o open_err: 1644492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o if ((errno == EPERM) || (errno == EACCES) || (errno == ENOENT)) { 1645492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o /* We don't have read permission, just return cache data. */ 1646492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o DBG(DEBUG_PROBE, printf("returning unverified data for %s\n", 1647492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o dev->bid_name)); 1648492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o return dev; 1649492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o } 1650492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o blkid_free_dev(dev); 1651492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o return NULL; 1652492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o } 1653492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o 1654492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o if ((now >= dev->bid_time) && 1655492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o (st.st_mtime <= dev->bid_time) && 1656efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o ((diff < BLKID_PROBE_MIN) || 1657e324b250593a32680309015eba7c6c5db7851227Theodore Ts'o (dev->bid_flags & BLKID_BID_FL_VERIFIED && 1658e324b250593a32680309015eba7c6c5db7851227Theodore Ts'o diff < BLKID_PROBE_INTERVAL))) 1659e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return dev; 1660e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 1661f0a22d0fd3ec3f45b562af5afba8811f72b94a28Theodore Ts'o DBG(DEBUG_PROBE, 166279e62409b3a247e258d9e9206484ed8f193a183eEric Sandeen printf("need to revalidate %s (cache time %lu, stat time %lu,\n\t" 1663492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o "time since last check %lu)\n", 166479e62409b3a247e258d9e9206484ed8f193a183eEric Sandeen dev->bid_name, (unsigned long)dev->bid_time, 166579e62409b3a247e258d9e9206484ed8f193a183eEric Sandeen (unsigned long)st.st_mtime, (unsigned long)diff)); 1666492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o 1667492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o if ((probe.fd = open(dev->bid_name, O_RDONLY)) < 0) { 1668492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o DBG(DEBUG_PROBE, printf("blkid_verify: error %s (%d) while " 1669efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o "opening %s\n", strerror(errno), errno, 1670492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o dev->bid_name)); 1671492ea6556e82caf88d77c78bde2beb8849aa4eafTheodore Ts'o goto open_err; 1672e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o } 1673e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 1674ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o probe.cache = cache; 1675ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o probe.dev = dev; 1676ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o probe.sbbuf = 0; 1677ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o probe.buf = 0; 1678ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o probe.buf_max = 0; 1679efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 168050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o /* 168150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o * Iterate over the type array. If we already know the type, 168250b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o * then try that first. If it doesn't work, then blow away 168350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o * the type information, and try again. 1684efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o * 168550b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o */ 168650b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'otry_again: 168750b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o type = 0; 168850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (!dev->bid_type || !strcmp(dev->bid_type, "mdraid")) { 168950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o uuid_t uuid; 169050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o 1691ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (check_mdraid(probe.fd, uuid) == 0) { 1692ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o set_uuid(dev, uuid, 0); 169350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o type = "mdraid"; 169450b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o goto found_type; 169550b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o } 169650b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o } 1697e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o for (id = type_array; id->bim_type; id++) { 169850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (dev->bid_type && 169950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o strcmp(id->bim_type, dev->bid_type)) 170050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o continue; 170150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o 170250b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o idx = id->bim_kboff + (id->bim_sboff >> 10); 1703d1da14b5b0496621046179e5644cc924ce01dae1Theodore Ts'o buf = get_buffer(&probe, (__u64) idx << 10, 1024); 1704ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o if (!buf) 170550b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o continue; 1706e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 1707c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia if (memcmp(id->bim_magic, buf + (id->bim_sboff & 0x3ff), 170850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o id->bim_len)) 170950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o continue; 171050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o 171150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if ((id->bim_probe == NULL) || 1712ca7498596f80896c8c495d5b0c3f20dd12ca9336Theodore Ts'o (id->bim_probe(&probe, id, buf) == 0)) { 171350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o type = id->bim_type; 171450b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o goto found_type; 1715e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o } 1716e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o } 1717e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 171850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (!id->bim_type && dev->bid_type) { 171950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o /* 1720ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o * Zap the device filesystem information and try again 172150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o */ 17220225face1bd0dddaf19ee8089dc28980a0395633Theodore Ts'o DBG(DEBUG_PROBE, 17230225face1bd0dddaf19ee8089dc28980a0395633Theodore Ts'o printf("previous fs type %s not valid, " 17240225face1bd0dddaf19ee8089dc28980a0395633Theodore Ts'o "trying full probe\n", dev->bid_type)); 1725ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o iter = blkid_tag_iterate_begin(dev); 1726ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o while (blkid_tag_next(iter, &type, &value) == 0) 1727ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o blkid_set_tag(dev, type, 0, 0); 1728ba5e38494e6b42d77f76d9ad18744388958eca7cTheodore Ts'o blkid_tag_iterate_end(iter); 172950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o goto try_again; 173050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o } 1731e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 173250b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (!dev->bid_type) { 1733e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o blkid_free_dev(dev); 1734257ace82b77a281da6d0491294eda6f0b27ef424Theodore Ts'o dev = 0; 1735257ace82b77a281da6d0491294eda6f0b27ef424Theodore Ts'o goto found_type; 173650b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o } 1737c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia 173850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'ofound_type: 173950b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (dev && type) { 174050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o dev->bid_devno = st.st_rdev; 174150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o dev->bid_time = time(0); 174250b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o dev->bid_flags |= BLKID_BID_FL_VERIFIED; 1743ce72b862c59da24ba16b354d687549276a24f908Theodore Ts'o cache->bic_flags |= BLKID_BIC_FL_CHANGED; 174450b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o 174579dd234a799434b6dc8365c49e743f00eb09d2fdTheodore Ts'o blkid_set_tag(dev, "TYPE", type, 0); 1746c9bad3ce1ac50e317adef1400458e6e30d0be20aRicardo M. Correia 174712b3c8ec1d314b8775fc7d9cefd6bfff551f1de0Theodore Ts'o DBG(DEBUG_PROBE, printf("%s: devno 0x%04llx, type %s\n", 174812a829dcdc57fb8ddc4887b07b40136288b6e7feMatthias Andree dev->bid_name, (long long)st.st_rdev, type)); 1749e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o } 1750e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 175145e338f5332a54295893dba2e32cc093d1316f60Jim Meyering free(probe.sbbuf); 175245e338f5332a54295893dba2e32cc093d1316f60Jim Meyering free(probe.buf); 1753efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o if (probe.fd >= 0) 1754257ace82b77a281da6d0491294eda6f0b27ef424Theodore Ts'o close(probe.fd); 1755e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 1756e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return dev; 1757e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o} 1758e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 175978e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'oint blkid_known_fstype(const char *fstype) 176078e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o{ 176178e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o struct blkid_magic *id; 176278e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o 176378e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o for (id = type_array; id->bim_type; id++) { 176478e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o if (strcmp(fstype, id->bim_type) == 0) 176578e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o return 1; 176678e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o } 176778e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o return 0; 176878e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o} 176978e2edf796e7902b8ce615ca8388840ef1387194Theodore Ts'o 1770e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#ifdef TEST_PROGRAM 1771e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'oint main(int argc, char **argv) 1772e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o{ 17737a603aa89fcffb8798eca34ca3858db6f0393046Theodore Ts'o blkid_dev dev; 177450b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o blkid_cache cache; 177579dd234a799434b6dc8365c49e743f00eb09d2fdTheodore Ts'o int ret; 1776e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o 1777e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o if (argc != 2) { 1778e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o fprintf(stderr, "Usage: %s device\n" 1779e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o "Probe a single device to determine type\n", argv[0]); 1780e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o exit(1); 1781e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o } 178279dd234a799434b6dc8365c49e743f00eb09d2fdTheodore Ts'o if ((ret = blkid_get_cache(&cache, "/dev/null")) != 0) { 178379dd234a799434b6dc8365c49e743f00eb09d2fdTheodore Ts'o fprintf(stderr, "%s: error creating cache (%d)\n", 178479dd234a799434b6dc8365c49e743f00eb09d2fdTheodore Ts'o argv[0], ret); 178579dd234a799434b6dc8365c49e743f00eb09d2fdTheodore Ts'o exit(1); 178679dd234a799434b6dc8365c49e743f00eb09d2fdTheodore Ts'o } 178798999c399d563c248728bf217467a788cb0c1aadTheodore Ts'o dev = blkid_get_dev(cache, argv[1], BLKID_DEV_NORMAL); 178850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (!dev) { 1789e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o printf("%s: %s has an unsupported type\n", argv[0], argv[1]); 179050b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o return (1); 179150b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o } 17921e5630abab066035602437ed047e0988064687f0Theodore Ts'o printf("TYPE='%s'\n", dev->bid_type ? dev->bid_type : "(null)"); 179350b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (dev->bid_label) 17941e5630abab066035602437ed047e0988064687f0Theodore Ts'o printf("LABEL='%s'\n", dev->bid_label); 179550b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o if (dev->bid_uuid) 17961e5630abab066035602437ed047e0988064687f0Theodore Ts'o printf("UUID='%s'\n", dev->bid_uuid); 1797efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 179850b380b4d4ab668bad45033e3a8aaf93c7f42844Theodore Ts'o blkid_free_dev(dev); 1799e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o return (0); 1800e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o} 1801e12f2ae74c2eb8997bf13adf8fdd7e7313971eaeTheodore Ts'o#endif 1802