util.c revision 030970ed750b6a169c32ffb8b19bce3150198629
13839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o/* 23839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * util.c --- utilities for the debugfs program 33839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * 43839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * Copyright (C) 1993, 1994 Theodore Ts'o. This file may be 53839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * redistributed under the terms of the GNU Public License. 63839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * 73839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o */ 83839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 93839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o#include <stdio.h> 103839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o#include <unistd.h> 113839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o#include <stdlib.h> 123839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o#include <ctype.h> 133839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o#include <string.h> 141e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o#include <time.h> 152c4a540636142a936889bbe4b85a2b9c56bfa458Theodore Ts'o#include <signal.h> 1688494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#ifdef HAVE_GETOPT_H 1788494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#include <getopt.h> 1888494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#else 1988494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'oextern int optind; 2088494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'oextern char *optarg; 2188494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#endif 2288494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#ifdef HAVE_OPTRESET 2388494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'oextern int optreset; /* defined by BSD, but not others */ 2488494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#endif 253839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 263839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o#include "debugfs.h" 273839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 2888494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o/* 2988494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * This function resets the libc getopt() function, which keeps 3088494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * internal state. Bad design! Stupid libc API designers! No 3188494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * biscuit! 3288494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * 3388494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * BSD-derived getopt() functions require that optind be reset to 1 in 3488494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * order to reset getopt() state. This used to be generally accepted 3588494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * way of resetting getopt(). However, glibc's getopt() 3688494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * has additional getopt() state beyond optind, and requires that 3788494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * optind be set zero to reset its state. So the unfortunate state of 3888494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * affairs is that BSD-derived versions of getopt() misbehave if 3988494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * optind is set to 0 in order to reset getopt(), and glibc's getopt() 4088494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * will core ump if optind is set 1 in order to reset getopt(). 4188494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * 4288494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * More modern versions of BSD require that optreset be set to 1 in 4388494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * order to reset getopt(). Sigh. Standards, anyone? 4488494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * 4588494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o * We hide the hair here. 4688494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o */ 4788494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'ovoid reset_getopt(void) 4888494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o{ 4988494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#ifdef __GLIBC__ 5088494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o optind = 0; 5188494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#else 5288494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o optind = 1; 5388494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#endif 5488494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#ifdef HAVE_OPTRESET 5588494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o optreset = 1; /* Makes BSD getopt happy */ 5688494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o#endif 57ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o} 58ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o 592b5ddd75c90ed4dce2ecdca12b59688a46b11b01Theodore Ts'ostatic const char *pager_search_list[] = { "pager", "more", "less", 0 }; 60ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'ostatic const char *pager_dir_list[] = { "/usr/bin", "/bin", 0 }; 61ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o 62ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'ostatic const char *find_pager(char *buf) 63ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o{ 64ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o const char **i, **j; 65ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o 66ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o for (i = pager_search_list; *i; i++) { 67ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o for (j = pager_dir_list; *j; j++) { 68ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o sprintf(buf, "%s/%s", *j, *i); 69ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o if (access(buf, X_OK) == 0) 70ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o return(buf); 71ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o } 72ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o } 73ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o return 0; 74ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o} 7588494bb6d440f703db98b6cc4452f63d7aa392b9Theodore Ts'o 763839e65723771b85975f4263102dd3ceec4523cTheodore Ts'oFILE *open_pager(void) 773839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o{ 78ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o FILE *outfile = 0; 790f72ab64616f936144061078116b8adbf0ade492Theodore Ts'o const char *pager = getenv("DEBUGFS_PAGER"); 80ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o char buf[80]; 813839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 822c4a540636142a936889bbe4b85a2b9c56bfa458Theodore Ts'o signal(SIGPIPE, SIG_IGN); 832b696a98569339287894df4a40676745f6111d7eTheodore Ts'o if (!pager) 840f72ab64616f936144061078116b8adbf0ade492Theodore Ts'o pager = getenv("PAGER"); 852b696a98569339287894df4a40676745f6111d7eTheodore Ts'o if (!pager) 86ec7fdb8f76ea88ba838690ae151735ae5ef800baTheodore Ts'o pager = find_pager(buf); 872b696a98569339287894df4a40676745f6111d7eTheodore Ts'o if (!pager || 882b696a98569339287894df4a40676745f6111d7eTheodore Ts'o (strcmp(pager, "__none__") == 0) || 892b696a98569339287894df4a40676745f6111d7eTheodore Ts'o ((outfile = popen(pager, "w")) == 0)) 902b696a98569339287894df4a40676745f6111d7eTheodore Ts'o return stdout; 912b696a98569339287894df4a40676745f6111d7eTheodore Ts'o return outfile; 923839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o} 933839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 943839e65723771b85975f4263102dd3ceec4523cTheodore Ts'ovoid close_pager(FILE *stream) 953839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o{ 96571fc5a89c17985626df29823617b63094d10b31Theodore Ts'o if (stream && stream != stdout) pclose(stream); 973839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o} 983839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 993839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o/* 1003839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * This routine is used whenever a command needs to turn a string into 1013839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * an inode. 1023839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o */ 103b044c2e02af46c54206f0f6e29896ab32681a7dbTheodore Ts'oext2_ino_t string_to_inode(char *str) 1043839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o{ 105b044c2e02af46c54206f0f6e29896ab32681a7dbTheodore Ts'o ext2_ino_t ino; 106b044c2e02af46c54206f0f6e29896ab32681a7dbTheodore Ts'o int len = strlen(str); 107b044c2e02af46c54206f0f6e29896ab32681a7dbTheodore Ts'o char *end; 108b044c2e02af46c54206f0f6e29896ab32681a7dbTheodore Ts'o int retval; 1093839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 1103839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o /* 1113839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * If the string is of the form <ino>, then treat it as an 1123839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * inode number. 1133839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o */ 1143839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o if ((len > 2) && (str[0] == '<') && (str[len-1] == '>')) { 1159131a759318963d9c86a7de7138ac8cee9641f8cTheodore Ts'o ino = strtoul(str+1, &end, 0); 1169131a759318963d9c86a7de7138ac8cee9641f8cTheodore Ts'o if (*end=='>') 1179131a759318963d9c86a7de7138ac8cee9641f8cTheodore Ts'o return ino; 1183839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o } 1193839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 1201e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o retval = ext2fs_namei(current_fs, root, cwd, str, &ino); 1213839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o if (retval) { 1223839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o com_err(str, retval, ""); 1233839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o return 0; 1243839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o } 1253839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o return ino; 1263839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o} 1273839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 1283839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o/* 1293839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * This routine returns 1 if the filesystem is not open, and prints an 1303839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * error message to that effect. 1313839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o */ 1323839e65723771b85975f4263102dd3ceec4523cTheodore Ts'oint check_fs_open(char *name) 1333839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o{ 1341e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o if (!current_fs) { 1353839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o com_err(name, 0, "Filesystem not open"); 1363839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o return 1; 1373839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o } 1383839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o return 0; 1393839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o} 1403839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 1413839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o/* 1423839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * This routine returns 1 if a filesystem is open, and prints an 1433839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o * error message to that effect. 1443839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o */ 1453839e65723771b85975f4263102dd3ceec4523cTheodore Ts'oint check_fs_not_open(char *name) 1463839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o{ 1471e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o if (current_fs) { 1483839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o com_err(name, 0, 1493839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o "Filesystem %s is still open. Close it first.\n", 1501e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o current_fs->device_name); 1513839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o return 1; 1523839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o } 1533839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o return 0; 1543839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o} 1553839e65723771b85975f4263102dd3ceec4523cTheodore Ts'o 1561e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o/* 1571e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o * This routine returns 1 if a filesystem is not opened read/write, 1581e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o * and prints an error message to that effect. 1591e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o */ 1601e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'oint check_fs_read_write(char *name) 1611e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o{ 1621e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o if (!(current_fs->flags & EXT2_FLAG_RW)) { 1631e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o com_err(name, 0, "Filesystem opened read/only"); 1641e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o return 1; 1651e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o } 1661e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o return 0; 1671e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o} 1681e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o 1691e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o/* 170d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o * This routine returns 1 if a filesystem is doesn't have its inode 171d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o * and block bitmaps loaded, and prints an error message to that 172d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o * effect. 173d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o */ 174d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'oint check_fs_bitmaps(char *name) 175d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o{ 176d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o if (!current_fs->block_map || !current_fs->inode_map) { 177d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o com_err(name, 0, "Filesystem bitmaps not loaded"); 178d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o return 1; 179d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o } 180d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o return 0; 181d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o} 182d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o 183d61f6176024865007d5a0da49c61c21e9d498007Theodore Ts'o/* 1841e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o * This function takes a __u32 time value and converts it to a string, 1851e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o * using ctime 1861e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o */ 1871e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'ochar *time_to_string(__u32 cl) 1881e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o{ 189acb79d9d19737cdd3c64bfd83c101fdeed47766eTheodore Ts'o static int do_gmt = -1; 190acb79d9d19737cdd3c64bfd83c101fdeed47766eTheodore Ts'o time_t t = (time_t) cl; 191acb79d9d19737cdd3c64bfd83c101fdeed47766eTheodore Ts'o char * tz; 1921e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o 1938ff1a86005121edcbf04cfaf8f0812591cb916c6Theodore Ts'o if (do_gmt == -1) { 1948ff1a86005121edcbf04cfaf8f0812591cb916c6Theodore Ts'o /* The diet libc doesn't respect the TZ environemnt variable */ 195acb79d9d19737cdd3c64bfd83c101fdeed47766eTheodore Ts'o tz = getenv("TZ"); 196acb79d9d19737cdd3c64bfd83c101fdeed47766eTheodore Ts'o if (!tz) 197acb79d9d19737cdd3c64bfd83c101fdeed47766eTheodore Ts'o tz = ""; 198acb79d9d19737cdd3c64bfd83c101fdeed47766eTheodore Ts'o do_gmt = !strcmp(tz, "GMT"); 1998ff1a86005121edcbf04cfaf8f0812591cb916c6Theodore Ts'o } 2008ff1a86005121edcbf04cfaf8f0812591cb916c6Theodore Ts'o 2018ff1a86005121edcbf04cfaf8f0812591cb916c6Theodore Ts'o return asctime((do_gmt) ? gmtime(&t) : localtime(&t)); 2021e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o} 2031e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o 204e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o/* 205e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * This function will convert a string to an unsigned long, printing 206e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * an error message if it fails, and returning success or failure in err. 207e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o */ 208e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'ounsigned long parse_ulong(const char *str, const char *cmd, 209e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o const char *descr, int *err) 210e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o{ 211e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o char *tmp; 212e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o unsigned long ret; 213e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 214e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o ret = strtoul(str, &tmp, 0); 215e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (*tmp == 0) { 216e5b3b27966ac71ca8b445a18a6ee1238684fb3f4Theodore Ts'o if (err) 217e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o *err = 0; 218e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return ret; 219e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o } 220e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o com_err(cmd, 0, "Bad %s - %s", descr, str); 221e5b3b27966ac71ca8b445a18a6ee1238684fb3f4Theodore Ts'o if (err) 222e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o *err = 1; 223e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o else 224e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o exit(1); 225e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 0; 226e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o} 227e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 228e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o/* 229e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * This function will convert a string to a block number. It returns 230e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * 0 on success, 1 on failure. 231e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o */ 232e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'oint strtoblk(const char *cmd, const char *str, blk_t *ret) 233e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o{ 234e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o blk_t blk; 235e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o int err; 236e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 237e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o blk = parse_ulong(str, cmd, "block number", &err); 238e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o *ret = blk; 239e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (err == 0 && blk == 0) { 240e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o com_err(cmd, 0, "Invalid block number 0"); 241e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o err = 1; 242e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o } 243e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return err; 244e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o} 245e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 246e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o/* 247e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * This is a common helper function used by the command processing 248e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * routines 249e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o */ 250e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'oint common_args_process(int argc, char *argv[], int min_argc, int max_argc, 251e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o const char *cmd, const char *usage, int flags) 252e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o{ 253e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (argc < min_argc || argc > max_argc) { 254e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o com_err(argv[0], 0, "Usage: %s %s", cmd, usage); 255e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 256e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o } 257e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (flags & CHECK_FS_NOTOPEN) { 258e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (check_fs_not_open(argv[0])) 259e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 260e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o } else { 261e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (check_fs_open(argv[0])) 262e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 263e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o } 264e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if ((flags & CHECK_FS_RW) && check_fs_read_write(argv[0])) 265e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 266e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if ((flags & CHECK_FS_BITMAPS) && check_fs_bitmaps(argv[0])) 267e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 268e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 0; 269e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o} 2701e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o 271e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o/* 272e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * This is a helper function used by do_stat, do_freei, do_seti, and 273e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * do_testi, etc. Basically, any command which takes a single 274e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * argument which is a file/inode number specifier. 275e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o */ 276e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'oint common_inode_args_process(int argc, char *argv[], 277e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o ext2_ino_t *inode, int flags) 278e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o{ 279e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (common_args_process(argc, argv, 2, 2, argv[0], "<file>", flags)) 280e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 2811e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o 282e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o *inode = string_to_inode(argv[1]); 283e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (!*inode) 284e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 285e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 0; 286e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o} 287e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 288e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o/* 289e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o * This is a helper function used by do_freeb, do_setb, and do_testb 290e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o */ 291e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'oint common_block_args_process(int argc, char *argv[], 292e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o blk_t *block, int *count) 293e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o{ 294e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o int err; 295e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 296e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (common_args_process(argc, argv, 2, 3, argv[0], 297e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o "<block> [count]", CHECK_FS_BITMAPS)) 298e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 299e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 300e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (strtoblk(argv[0], argv[1], block)) 301e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 302e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (argc > 2) { 303b38cd283637dafff6b39d4b76bf76fa2789eb21fTheodore Ts'o *count = parse_ulong(argv[2], argv[0], "count", &err); 304e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (err) 305e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 306e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o } 307e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 0; 308e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o} 309e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 310ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'oint debugfs_read_inode_full(ext2_ino_t ino, struct ext2_inode * inode, 311ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o const char *cmd, int bufsize) 312ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o{ 313ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o int retval; 314ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o 315ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o retval = ext2fs_read_inode_full(current_fs, ino, inode, bufsize); 316ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o if (retval) { 317ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o com_err(cmd, retval, "while reading inode %u", ino); 318ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o return 1; 319ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o } 320ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o return 0; 321ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o} 322ea822eeba373bd0bed6e58a35ce123a9f2768113Theodore Ts'o 323e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'oint debugfs_read_inode(ext2_ino_t ino, struct ext2_inode * inode, 324e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o const char *cmd) 325e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o{ 326e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o int retval; 327e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 328e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o retval = ext2fs_read_inode(current_fs, ino, inode); 329e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (retval) { 330e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o com_err(cmd, retval, "while reading inode %u", ino); 331e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 332e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o } 333e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 0; 334e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o} 335e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 336e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'oint debugfs_write_inode(ext2_ino_t ino, struct ext2_inode * inode, 337e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o const char *cmd) 338e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o{ 339e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o int retval; 340e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o 341e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o retval = ext2fs_write_inode(current_fs, ino, inode); 342e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o if (retval) { 343e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o com_err(cmd, retval, "while writing inode %u", ino); 344e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 1; 345e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o } 346e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o return 0; 347e1018eeaa3285cd0ca26986d929194c1b577d211Theodore Ts'o} 3481e3472c5f37ca3686dd69b079d4d02a302f5798dTheodore Ts'o 349030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'oint debugfs_write_new_inode(ext2_ino_t ino, struct ext2_inode * inode, 350030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o const char *cmd) 351030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o{ 352030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o int retval; 353030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o 354030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o retval = ext2fs_write_new_inode(current_fs, ino, inode); 355030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o if (retval) { 356030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o com_err(cmd, retval, "while creating inode %u", ino); 357030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o return 1; 358030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o } 359030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o return 0; 360030970ed750b6a169c32ffb8b19bce3150198629Theodore Ts'o} 361