11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dir.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1995, 1996 by Volker Lendecke 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modified for big endian by J.F. Chadima and David S. Miller 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modified 1998, 1999 Wolfram Pienkoss for NLS 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modified 1999 Wolfram Pienkoss for directory caching 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/time.h> 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/stat.h> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/vmalloc.h> 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 2034286d6662308d82aed891852d04c7c3a2649b16Nick Piggin#include <linux/namei.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2432c419d95f3d1da891ab9bd032a214ee05b94ed4Al Viro#include "ncp_fs.h" 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2676f582a8f60a94c116e0b92d07c9047410274b20Al Virostatic void ncp_read_volume_list(struct file *, struct dir_context *, 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_cache_control *); 2876f582a8f60a94c116e0b92d07c9047410274b20Al Virostatic void ncp_do_readdir(struct file *, struct dir_context *, 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_cache_control *); 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3176f582a8f60a94c116e0b92d07c9047410274b20Al Virostatic int ncp_readdir(struct file *, struct dir_context *); 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33ebfc3b49a7ac25920cb5be5445f602e51d2ea559Al Virostatic int ncp_create(struct inode *, struct dentry *, umode_t, bool); 3400cd8dd3bf95f2cc8435b4cac01d9995635c6d0bAl Virostatic struct dentry *ncp_lookup(struct inode *, struct dentry *, unsigned int); 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ncp_unlink(struct inode *, struct dentry *); 3618bb1db3e7607e4a997d50991a6f9fa5b0f8722cAl Virostatic int ncp_mkdir(struct inode *, struct dentry *, umode_t); 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ncp_rmdir(struct inode *, struct dentry *); 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ncp_rename(struct inode *, struct dentry *, 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *, struct dentry *); 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ncp_mknod(struct inode * dir, struct dentry *dentry, 411a67aafb5f72a436ca044293309fa7e6351d6a35Al Viro umode_t mode, dev_t rdev); 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int ncp_symlink(struct inode *, struct dentry *, const char *); 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ncp_symlink NULL 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 484b6f5d20b04dcbc3d888555522b90ba6d36c4106Arjan van de Venconst struct file_operations ncp_dir_operations = 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 50ca572727dbb945e443564029a495157fd2e72995jan Blunck .llseek = generic_file_llseek, 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read = generic_read_dir, 5276f582a8f60a94c116e0b92d07c9047410274b20Al Viro .iterate = ncp_readdir, 5393d84b6d99f5ddb911b318990c759a0fefa0f7eaJohn Kacur .unlocked_ioctl = ncp_ioctl, 5454f67f631dfc25ca7a8b19200e34013abc974337Petr Vandrovec#ifdef CONFIG_COMPAT 5554f67f631dfc25ca7a8b19200e34013abc974337Petr Vandrovec .compat_ioctl = ncp_compat_ioctl, 5654f67f631dfc25ca7a8b19200e34013abc974337Petr Vandrovec#endif 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5992e1d5be91a0e3ffa5c4697eeb09b2aa22792122Arjan van de Venconst struct inode_operations ncp_dir_inode_operations = 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .create = ncp_create, 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .lookup = ncp_lookup, 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unlink = ncp_unlink, 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .symlink = ncp_symlink, 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .mkdir = ncp_mkdir, 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .rmdir = ncp_rmdir, 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .mknod = ncp_mknod, 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .rename = ncp_rename, 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .setattr = ncp_notify_change, 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Dentry operations routines 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 750b728e1911cbe6e24020727c3870628b9653f32aAl Virostatic int ncp_lookup_validate(struct dentry *, unsigned int); 76da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvaldsstatic int ncp_hash_dentry(const struct dentry *, struct qstr *); 77da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvaldsstatic int ncp_compare_dentry(const struct dentry *, const struct dentry *, 78621e155a3591962420eacdd39f6f0aa29ceb221eNick Piggin unsigned int, const char *, const struct qstr *); 79fe15ce446beb3a33583af81ffe6c9d01a75314edNick Pigginstatic int ncp_delete_dentry(const struct dentry *); 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 810378c4051a621303ae919f1cee832206a4c1aa68Al Viroconst struct dentry_operations ncp_dentry_operations = 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .d_revalidate = ncp_lookup_validate, 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .d_hash = ncp_hash_dentry, 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .d_compare = ncp_compare_dentry, 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .d_delete = ncp_delete_dentry, 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 892e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec#define ncp_namespace(i) (NCP_SERVER(i)->name_space[NCP_FINFO(i)->volNumber]) 902e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 912e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovecstatic inline int ncp_preserve_entry_case(struct inode *i, __u32 nscreator) 922e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec{ 932e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec#ifdef CONFIG_NCPFS_SMALLDOS 942e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec int ns = ncp_namespace(i); 952e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 962e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec if ((ns == NW_NS_DOS) 972e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec#ifdef CONFIG_NCPFS_OS2_NS 982e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec || ((ns == NW_NS_OS2) && (nscreator == NW_NS_DOS)) 992e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec#endif /* CONFIG_NCPFS_OS2_NS */ 1002e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec ) 1012e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec return 0; 1022e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec#endif /* CONFIG_NCPFS_SMALLDOS */ 1032e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec return 1; 1042e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec} 1052e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 1062e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec#define ncp_preserve_case(i) (ncp_namespace(i) != NW_NS_DOS) 1072e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 108621e155a3591962420eacdd39f6f0aa29ceb221eNick Pigginstatic inline int ncp_case_sensitive(const struct inode *i) 1092e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec{ 1102e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec#ifdef CONFIG_NCPFS_NFS_NS 111621e155a3591962420eacdd39f6f0aa29ceb221eNick Piggin return ncp_namespace(i) == NW_NS_NFS; 1122e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec#else 1132e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec return 0; 1142e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec#endif /* CONFIG_NCPFS_NFS_NS */ 1152e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec} 1162e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: leave the hash unchanged if the directory 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is case-sensitive. 120da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds * 121da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds * Accessing the parent inode can be racy under RCU pathwalking. 122da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds * Use ACCESS_ONCE() to make sure we use _one_ particular inode, 123da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds * the callers will handle races. 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 126da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvaldsncp_hash_dentry(const struct dentry *dentry, struct qstr *this) 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 128da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds struct inode *inode = ACCESS_ONCE(dentry->d_inode); 129da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds 130da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds if (!inode) 131da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds return 0; 132da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds 133b1e6a015a580ad145689ad1d6b4aa0e03e6c868bNick Piggin if (!ncp_case_sensitive(inode)) { 134621e155a3591962420eacdd39f6f0aa29ceb221eNick Piggin struct super_block *sb = dentry->d_sb; 1352e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec struct nls_table *t; 1362e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec unsigned long hash; 1372e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec int i; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 139621e155a3591962420eacdd39f6f0aa29ceb221eNick Piggin t = NCP_IO_TABLE(sb); 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash = init_name_hash(); 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i=0; i<this->len ; i++) 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash = partial_name_hash(ncp_tolower(t, this->name[i]), 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hash); 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds this->hash = end_name_hash(hash); 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 149da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds/* 150da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds * Accessing the parent inode can be racy under RCU pathwalking. 151da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds * Use ACCESS_ONCE() to make sure we use _one_ particular inode, 152da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds * the callers will handle races. 153da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds */ 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 155da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvaldsncp_compare_dentry(const struct dentry *parent, const struct dentry *dentry, 156621e155a3591962420eacdd39f6f0aa29ceb221eNick Piggin unsigned int len, const char *str, const struct qstr *name) 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 158da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds struct inode *pinode; 159da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds 160621e155a3591962420eacdd39f6f0aa29ceb221eNick Piggin if (len != name->len) 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 163da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds pinode = ACCESS_ONCE(parent->d_inode); 164da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds if (!pinode) 165da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds return 1; 166da53be12bbb4fabbe2e9f6f908de0cf478b5161dLinus Torvalds 167621e155a3591962420eacdd39f6f0aa29ceb221eNick Piggin if (ncp_case_sensitive(pinode)) 168621e155a3591962420eacdd39f6f0aa29ceb221eNick Piggin return strncmp(str, name->name, len); 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 170621e155a3591962420eacdd39f6f0aa29ceb221eNick Piggin return ncp_strnicmp(NCP_IO_TABLE(pinode->i_sb), str, name->name, len); 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the callback from dput() when d_count is going to 0. 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We use this to unhash dentries with bad inodes. 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Closing files can be safely postponed until iput() - it's done there anyway. 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 179fe15ce446beb3a33583af81ffe6c9d01a75314edNick Pigginncp_delete_dentry(const struct dentry * dentry) 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *inode = dentry->d_inode; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (inode) { 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (is_bad_inode(inode)) 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* N.B. Unhash negative dentries? */ 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsncp_single_volume(struct ncp_server *server) 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (server->m.mounted_vol[0] != '\0'); 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int ncp_is_server_root(struct inode *inode) 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (!ncp_single_volume(NCP_SERVER(inode)) && 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode == inode->i_sb->s_root->d_inode); 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the callback when the dcache has a lookup hit. 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_NCPFS_STRONG 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* try to delete a readonly file (NW R bit set) */ 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsncp_force_unlink(struct inode *dir, struct dentry* dentry) 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int res=0x9c,res2; 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nw_modify_dos_info info; 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __le32 old_nwattr; 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *inode; 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(&info, 0, sizeof(info)); 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* remove the Read-Only flag on the NW server */ 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode = dentry->d_inode; 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds old_nwattr = NCP_FINFO(inode)->nwattr; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info.attributes = old_nwattr & ~(aRONLY|aDELETEINHIBIT|aRENAMEINHIBIT); 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(inode), inode, NULL, DM_ATTRIBUTES, &info); 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res2) 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto leave_me; 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now try again the delete operation */ 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_del_file_or_subdir2(NCP_SERVER(dir), dentry); 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) /* delete failed, set R bit again */ 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info.attributes = old_nwattr; 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(inode), inode, NULL, DM_ATTRIBUTES, &info); 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res2) 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto leave_me; 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsleave_me: 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return(res); 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_NCPFS_STRONG */ 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_NCPFS_STRONG 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsncp_force_rename(struct inode *old_dir, struct dentry* old_dentry, char *_old_name, 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *new_dir, struct dentry* new_dentry, char *_new_name) 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nw_modify_dos_info info; 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int res=0x90,res2; 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *old_inode = old_dentry->d_inode; 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __le32 old_nwattr = NCP_FINFO(old_inode)->nwattr; 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __le32 new_nwattr = 0; /* shut compiler warning */ 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int old_nwattr_changed = 0; 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int new_nwattr_changed = 0; 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(&info, 0, sizeof(info)); 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* remove the Read-Only flag on the NW server */ 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info.attributes = old_nwattr & ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT); 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(old_inode), old_inode, NULL, DM_ATTRIBUTES, &info); 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!res2) 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds old_nwattr_changed = 1; 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_dentry && new_dentry->d_inode) { 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_nwattr = NCP_FINFO(new_dentry->d_inode)->nwattr; 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info.attributes = new_nwattr & ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT); 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(new_dir), new_dir, _new_name, DM_ATTRIBUTES, &info); 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!res2) 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_nwattr_changed = 1; 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now try again the rename operation */ 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* but only if something really happened */ 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_nwattr_changed || old_nwattr_changed) { 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_ren_or_mov_file_or_subdir(NCP_SERVER(old_dir), 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds old_dir, _old_name, 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_dir, _new_name); 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto leave_me; 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* file was successfully renamed, so: 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do not set attributes on old file - it no longer exists 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds copy attributes from old file to new */ 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_nwattr_changed = old_nwattr_changed; 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_nwattr = old_nwattr; 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds old_nwattr_changed = 0; 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsleave_me:; 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old_nwattr_changed) { 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info.attributes = old_nwattr; 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(old_inode), old_inode, NULL, DM_ATTRIBUTES, &info); 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* ignore errors */ 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_nwattr_changed) { 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info.attributes = new_nwattr; 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(new_dir), new_dir, _new_name, DM_ATTRIBUTES, &info); 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* ignore errors */ 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return(res); 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_NCPFS_STRONG */ 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 3090b728e1911cbe6e24020727c3870628b9653f32aAl Vironcp_lookup_validate(struct dentry *dentry, unsigned int flags) 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server; 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dentry *parent; 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *dir; 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_entry_info finfo; 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int res, val = 0, len; 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 __name[NCP_MAXPATHLEN + 1]; 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3180378c4051a621303ae919f1cee832206a4c1aa68Al Viro if (dentry == dentry->d_sb->s_root) 3190378c4051a621303ae919f1cee832206a4c1aa68Al Viro return 1; 3200378c4051a621303ae919f1cee832206a4c1aa68Al Viro 3210b728e1911cbe6e24020727c3870628b9653f32aAl Viro if (flags & LOOKUP_RCU) 32234286d6662308d82aed891852d04c7c3a2649b16Nick Piggin return -ECHILD; 32334286d6662308d82aed891852d04c7c3a2649b16Nick Piggin 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds parent = dget_parent(dentry); 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dir = parent->d_inode; 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dentry->d_inode) 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto finished; 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds server = NCP_SERVER(dir); 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Inspired by smbfs: 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The default validation is based on dentry age: 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We set the max age at mount time. (But each 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * successful server lookup renews the timestamp.) 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = NCP_TEST_AGE(server, dentry); 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (val) 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto finished; 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 342d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(2, "%pd2 not valid, age=%ld, server lookup\n", 34384eb3532b574bb6a65c0aad9591b28b2adcd47d2Al Viro dentry, NCP_GET_AGE(dentry)); 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = sizeof(__name); 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_is_server_root(dir)) { 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_io2vol(server, __name, &len, dentry->d_name.name, 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dentry->d_name.len, 1); 3492e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec if (!res) { 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_lookup_volume(server, __name, &(finfo.i)); 3512e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec if (!res) 3522e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec ncp_update_known_namespace(server, finfo.i.volNumber, NULL); 3532e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec } 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_io2vol(server, __name, &len, dentry->d_name.name, 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dentry->d_name.len, !ncp_preserve_case(dir)); 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!res) 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_obtain_info(server, dir, __name, &(finfo.i)); 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.volume = finfo.i.volNumber; 361d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(2, "looked for %pd/%s, res=%d\n", 36284eb3532b574bb6a65c0aad9591b28b2adcd47d2Al Viro dentry->d_parent, __name, res); 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we didn't find it, or if it has a different dirEntNum to 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * what we remember, it's not valid any more. 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!res) { 3682e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec struct inode *inode = dentry->d_inode; 3692e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 3702e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec mutex_lock(&inode->i_mutex); 3712e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec if (finfo.i.dirEntNum == NCP_FINFO(inode)->dirEntNum) { 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_new_dentry(dentry); 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val=1; 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 375d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(2, "found, but dirEntNum changed\n"); 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3772e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec ncp_update_inode2(inode, &finfo); 3782e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec mutex_unlock(&inode->i_mutex); 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfinished: 382d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(2, "result=%d\n", val); 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dput(parent); 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return val; 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct dentry * 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos) 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dentry *dent = dentry; 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (d_validate(dent, parent)) { 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dent->d_name.len <= NCP_MAXPATHLEN && 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (unsigned long)dent->d_fsdata == fpos) { 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dent->d_inode) { 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dput(dent); 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dent = NULL; 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dent; 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dput(dent); 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If a pointer is invalid, we search the dentry. */ 4052fd6b7f50797f2e993eea59e0a0b8c6399c811dcNick Piggin spin_lock(&parent->d_lock); 406821cc3070ff54e39ab6624c843f1905d737d9ac0Al Viro list_for_each_entry(dent, &parent->d_subdirs, d_u.d_child) { 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((unsigned long)dent->d_fsdata == fpos) { 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dent->d_inode) 409dc0474be3e27463d4d4a2793f82366eed906f223Nick Piggin dget(dent); 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dent = NULL; 4122fd6b7f50797f2e993eea59e0a0b8c6399c811dcNick Piggin spin_unlock(&parent->d_lock); 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4162fd6b7f50797f2e993eea59e0a0b8c6399c811dcNick Piggin spin_unlock(&parent->d_lock); 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dent; 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic time_t ncp_obtain_mtime(struct dentry *dentry) 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *inode = dentry->d_inode; 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server = NCP_SERVER(inode); 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nw_info_struct i; 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ncp_conn_valid(server) || ncp_is_server_root(inode)) 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_obtain_info(server, inode, NULL, &i)) 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ncp_date_dos2unix(i.modifyTime, i.modifyDate); 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43876f582a8f60a94c116e0b92d07c9047410274b20Al Virostatic int ncp_readdir(struct file *file, struct dir_context *ctx) 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 44076f582a8f60a94c116e0b92d07c9047410274b20Al Viro struct dentry *dentry = file->f_path.dentry; 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *inode = dentry->d_inode; 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct page *page = NULL; 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server = NCP_SERVER(inode); 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds union ncp_dir_cache *cache = NULL; 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_cache_control ctl; 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result, mtime_valid = 0; 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds time_t mtime = 0; 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.page = NULL; 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.cache = NULL; 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 452d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(2, "reading %pD2, pos=%d\n", file, (int)ctx->pos); 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = -EIO; 4552e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec /* Do not generate '.' and '..' when server is dead. */ 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ncp_conn_valid(server)) 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = 0; 46076f582a8f60a94c116e0b92d07c9047410274b20Al Viro if (!dir_emit_dots(file, ctx)) 46176f582a8f60a94c116e0b92d07c9047410274b20Al Viro goto out; 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page = grab_cache_page(&inode->i_data, 0); 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!page) 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto read_really; 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.cache = cache = kmap(page); 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.head = cache->head; 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!PageUptodate(page) || !ctl.head.eof) 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto init_cache; 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 47376f582a8f60a94c116e0b92d07c9047410274b20Al Viro if (ctx->pos == 2) { 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (jiffies - ctl.head.time >= NCP_MAX_AGE(server)) 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto init_cache; 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mtime = ncp_obtain_mtime(dentry); 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mtime_valid = 1; 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((!mtime) || (mtime != ctl.head.mtime)) 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto init_cache; 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 48376f582a8f60a94c116e0b92d07c9047410274b20Al Viro if (ctx->pos > ctl.head.end) 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto finished; 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 48676f582a8f60a94c116e0b92d07c9047410274b20Al Viro ctl.fpos = ctx->pos + (NCP_DIRCACHE_START - 2); 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.ofs = ctl.fpos / NCP_DIRCACHE_SIZE; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.idx = ctl.fpos % NCP_DIRCACHE_SIZE; 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (;;) { 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctl.ofs != 0) { 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.page = find_lock_page(&inode->i_data, ctl.ofs); 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ctl.page) 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto invalid_cache; 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.cache = kmap(ctl.page); 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!PageUptodate(ctl.page)) 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto invalid_cache; 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (ctl.idx < NCP_DIRCACHE_SIZE) { 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dentry *dent; 50176f582a8f60a94c116e0b92d07c9047410274b20Al Viro bool over; 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dent = ncp_dget_fpos(ctl.cache->dentry[ctl.idx], 50476f582a8f60a94c116e0b92d07c9047410274b20Al Viro dentry, ctx->pos); 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dent) 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto invalid_cache; 50776f582a8f60a94c116e0b92d07c9047410274b20Al Viro over = !dir_emit(ctx, dent->d_name.name, 50876f582a8f60a94c116e0b92d07c9047410274b20Al Viro dent->d_name.len, 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dent->d_inode->i_ino, DT_UNKNOWN); 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dput(dent); 51176f582a8f60a94c116e0b92d07c9047410274b20Al Viro if (over) 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto finished; 51376f582a8f60a94c116e0b92d07c9047410274b20Al Viro ctx->pos += 1; 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.idx += 1; 51576f582a8f60a94c116e0b92d07c9047410274b20Al Viro if (ctx->pos > ctl.head.end) 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto finished; 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctl.page) { 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kunmap(ctl.page); 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SetPageUptodate(ctl.page); 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unlock_page(ctl.page); 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page_cache_release(ctl.page); 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.page = NULL; 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.idx = 0; 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.ofs += 1; 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsinvalid_cache: 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctl.page) { 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kunmap(ctl.page); 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unlock_page(ctl.page); 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page_cache_release(ctl.page); 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.page = NULL; 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.cache = cache; 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsinit_cache: 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_invalidate_dircache_entries(dentry); 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!mtime_valid) { 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mtime = ncp_obtain_mtime(dentry); 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mtime_valid = 1; 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.head.mtime = mtime; 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.head.time = jiffies; 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.head.eof = 0; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.fpos = 2; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.ofs = 0; 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.idx = NCP_DIRCACHE_START; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.filled = 0; 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.valid = 1; 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsread_really: 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_is_server_root(inode)) { 55276f582a8f60a94c116e0b92d07c9047410274b20Al Viro ncp_read_volume_list(file, ctx, &ctl); 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 55476f582a8f60a94c116e0b92d07c9047410274b20Al Viro ncp_do_readdir(file, ctx, &ctl); 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.head.end = ctl.fpos - 1; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.head.eof = ctl.valid; 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfinished: 5592e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec if (ctl.page) { 5602e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec kunmap(ctl.page); 5612e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec SetPageUptodate(ctl.page); 5622e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec unlock_page(ctl.page); 5632e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec page_cache_release(ctl.page); 5642e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec } 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (page) { 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cache->head = ctl.head; 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kunmap(page); 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SetPageUptodate(page); 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unlock_page(page); 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page_cache_release(page); 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return result; 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 57776f582a8f60a94c116e0b92d07c9047410274b20Al Vironcp_fill_cache(struct file *file, struct dir_context *ctx, 5782e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec struct ncp_cache_control *ctrl, struct ncp_entry_info *entry, 5792e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec int inval_childs) 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 58176f582a8f60a94c116e0b92d07c9047410274b20Al Viro struct dentry *newdent, *dentry = file->f_path.dentry; 5822e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec struct inode *dir = dentry->d_inode; 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_cache_control ctl = *ctrl; 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct qstr qname; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int valid = 0; 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int hashed = 0; 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ino_t ino = 0; 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 __name[NCP_MAXPATHLEN + 1]; 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qname.len = sizeof(__name); 5912e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec if (ncp_vol2io(NCP_SERVER(dir), __name, &qname.len, 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry->i.entryName, entry->i.nameLen, 5932e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec !ncp_preserve_entry_case(dir, entry->i.NSCreator))) 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; /* I'm not sure */ 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qname.name = __name; 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5984f522a247bc26d4ab5c8fc406ffffa8b3a77abe3Al Viro newdent = d_hash_and_lookup(dentry, &qname); 5994f522a247bc26d4ab5c8fc406ffffa8b3a77abe3Al Viro if (unlikely(IS_ERR(newdent))) 6004f522a247bc26d4ab5c8fc406ffffa8b3a77abe3Al Viro goto end_advance; 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!newdent) { 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newdent = d_alloc(dentry, &qname); 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!newdent) 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto end_advance; 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hashed = 1; 6072e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 6082e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec /* If case sensitivity changed for this volume, all entries below this one 6092e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec should be thrown away. This entry itself is not affected, as its case 6102e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec sensitivity is controlled by its own parent. */ 6112e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec if (inval_childs) 6122e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec shrink_dcache_parent(newdent); 6132e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 6142e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec /* 615fb2d5b86aff355a27ebfc132d3c99f4a940cc3feNick Piggin * NetWare's OS2 namespace is case preserving yet case 616fb2d5b86aff355a27ebfc132d3c99f4a940cc3feNick Piggin * insensitive. So we update dentry's name as received from 617fb2d5b86aff355a27ebfc132d3c99f4a940cc3feNick Piggin * server. Parent dir's i_mutex is locked because we're in 618fb2d5b86aff355a27ebfc132d3c99f4a940cc3feNick Piggin * readdir. 6192e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec */ 620fb2d5b86aff355a27ebfc132d3c99f4a940cc3feNick Piggin dentry_update_name_case(newdent, &qname); 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!newdent->d_inode) { 6242e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec struct inode *inode; 6252e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry->opened = 0; 6272e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec entry->ino = iunique(dir->i_sb, 2); 6282e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec inode = ncp_iget(dir->i_sb, entry); 6292e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec if (inode) { 6302e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec d_instantiate(newdent, inode); 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!hashed) 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds d_rehash(newdent); 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6342e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec } else { 6352e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec struct inode *inode = newdent->d_inode; 6362e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec 637fb2d5b86aff355a27ebfc132d3c99f4a940cc3feNick Piggin mutex_lock_nested(&inode->i_mutex, I_MUTEX_CHILD); 6382e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec ncp_update_inode2(inode, entry); 6392e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec mutex_unlock(&inode->i_mutex); 6402e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec } 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (newdent->d_inode) { 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ino = newdent->d_inode->i_ino; 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newdent->d_fsdata = (void *) ctl.fpos; 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_new_dentry(newdent); 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctl.idx >= NCP_DIRCACHE_SIZE) { 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctl.page) { 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kunmap(ctl.page); 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SetPageUptodate(ctl.page); 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unlock_page(ctl.page); 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page_cache_release(ctl.page); 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.cache = NULL; 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.idx -= NCP_DIRCACHE_SIZE; 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.ofs += 1; 6582e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec ctl.page = grab_cache_page(&dir->i_data, ctl.ofs); 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctl.page) 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.cache = kmap(ctl.page); 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctl.cache) { 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.cache->dentry[ctl.idx] = newdent; 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds valid = 1; 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dput(newdent); 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsend_advance: 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!valid) 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.valid = 0; 67076f582a8f60a94c116e0b92d07c9047410274b20Al Viro if (!ctl.filled && (ctl.fpos == ctx->pos)) { 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ino) 6722e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec ino = iunique(dir->i_sb, 2); 67376f582a8f60a94c116e0b92d07c9047410274b20Al Viro ctl.filled = !dir_emit(ctx, qname.name, qname.len, 67476f582a8f60a94c116e0b92d07c9047410274b20Al Viro ino, DT_UNKNOWN); 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ctl.filled) 67676f582a8f60a94c116e0b92d07c9047410274b20Al Viro ctx->pos += 1; 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.fpos += 1; 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctl.idx += 1; 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *ctrl = ctl; 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (ctl.valid || !ctl.filled); 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 68576f582a8f60a94c116e0b92d07c9047410274b20Al Vironcp_read_volume_list(struct file *file, struct dir_context *ctx, 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_cache_control *ctl) 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 68876f582a8f60a94c116e0b92d07c9047410274b20Al Viro struct dentry *dentry = file->f_path.dentry; 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *inode = dentry->d_inode; 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server = NCP_SERVER(inode); 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_volume_info info; 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_entry_info entry; 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 695d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "pos=%ld\n", (unsigned long)ctx->pos); 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < NCP_NUMBER_OF_VOLUMES; i++) { 6982e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec int inval_dentry; 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_get_volume_info_with_number(server, i, &info) != 0) 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!strlen(info.volume_name)) 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 705d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "found vol: %s\n", info.volume_name); 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_lookup_volume(server, info.volume_name, 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &entry.i)) { 709d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "could not lookup vol %s\n", 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info.volume_name); 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7132e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec inval_dentry = ncp_update_known_namespace(server, entry.i.volNumber, NULL); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry.volume = entry.i.volNumber; 71576f582a8f60a94c116e0b92d07c9047410274b20Al Viro if (!ncp_fill_cache(file, ctx, ctl, &entry, inval_dentry)) 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 72176f582a8f60a94c116e0b92d07c9047410274b20Al Vironcp_do_readdir(struct file *file, struct dir_context *ctx, 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_cache_control *ctl) 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 72476f582a8f60a94c116e0b92d07c9047410274b20Al Viro struct dentry *dentry = file->f_path.dentry; 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *dir = dentry->d_inode; 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server = NCP_SERVER(dir); 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nw_search_sequence seq; 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_entry_info entry; 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void* buf; 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int more; 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t bufsize; 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 734d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "%pD2, fpos=%ld\n", file, (unsigned long)ctx->pos); 735e45ca8baa33e0c0228e84126c3a20df3abfd1771Joe Perches ncp_vdbg("init %pD, volnum=%d, dirent=%u\n", 736e45ca8baa33e0c0228e84126c3a20df3abfd1771Joe Perches file, NCP_FINFO(dir)->volNumber, NCP_FINFO(dir)->dirEntNum); 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = ncp_initialize_search(server, dir, &seq); 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) { 740d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "init failed, err=%d\n", err); 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We MUST NOT use server->buffer_size handshaked with server if we are 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds using UDP, as for UDP server uses max. buffer size determined by 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MTU, and for TCP server uses hardwired value 65KB (== 66560 bytes). 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds So we use 128KB, just to be sure, as there is no way how to know 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds this value in advance. */ 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bufsize = 131072; 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = vmalloc(bufsize); 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buf) 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cnt; 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char* rpl; 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t rpls; 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = ncp_search_for_fileset(server, &seq, &more, &cnt, buf, bufsize, &rpl, &rpls); 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) /* Error */ 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!cnt) /* prevent endless loop */ 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (cnt--) { 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t onerpl; 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rpls < offsetof(struct nw_info_struct, entryName)) 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; /* short packet */ 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_extract_file_info(rpl, &entry.i); 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds onerpl = offsetof(struct nw_info_struct, entryName) + entry.i.nameLen; 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rpls < onerpl) 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; /* short packet */ 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (void)ncp_obtain_nfs_info(server, &entry.i); 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpl += onerpl; 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpls -= onerpl; 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry.volume = entry.i.volNumber; 77576f582a8f60a94c116e0b92d07c9047410274b20Al Viro if (!ncp_fill_cache(file, ctx, ctl, &entry, 0)) 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (more); 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vfree(buf); 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint ncp_conn_logged_in(struct super_block *sb) 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server* server = NCP_SBP(sb); 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_single_volume(server)) { 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len; 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dentry* dent; 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 volNumber; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __le32 dirEntNum; 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __le32 DosDirNum; 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 __name[NCP_MAXPATHLEN + 1]; 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = sizeof(__name); 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = ncp_io2vol(server, __name, &len, server->m.mounted_vol, 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strlen(server->m.mounted_vol), 1); 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = -ENOENT; 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_get_volume_root(server, __name, &volNumber, &dirEntNum, &DosDirNum)) { 803e45ca8baa33e0c0228e84126c3a20df3abfd1771Joe Perches ncp_vdbg("%s not found\n", server->m.mounted_vol); 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dent = sb->s_root; 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dent) { 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode* ino = dent->d_inode; 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ino) { 8102e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec ncp_update_known_namespace(server, volNumber, NULL); 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCP_FINFO(ino)->volNumber = volNumber; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCP_FINFO(ino)->dirEntNum = dirEntNum; 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCP_FINFO(ino)->DosDirNum = DosDirNum; 8142e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec result = 0; 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 816d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "sb->s_root->d_inode == NULL!\n"); 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 819d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "sb->s_root == NULL!\n"); 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8212e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec } else 8222e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec result = 0; 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return result; 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 82800cd8dd3bf95f2cc8435b4cac01d9995635c6d0bAl Virostatic struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server = NCP_SERVER(dir); 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *inode = NULL; 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_entry_info finfo; 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error, res, len; 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 __name[NCP_MAXPATHLEN + 1]; 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EIO; 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ncp_conn_valid(server)) 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto finished; 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 840e45ca8baa33e0c0228e84126c3a20df3abfd1771Joe Perches ncp_vdbg("server lookup for %pd2\n", dentry); 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = sizeof(__name); 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_is_server_root(dir)) { 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_io2vol(server, __name, &len, dentry->d_name.name, 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dentry->d_name.len, 1); 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!res) 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_lookup_volume(server, __name, &(finfo.i)); 848ffddc5fd19b219f557fd4a81168ce8784a4facedDan Carpenter if (!res) 849ffddc5fd19b219f557fd4a81168ce8784a4facedDan Carpenter ncp_update_known_namespace(server, finfo.i.volNumber, NULL); 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_io2vol(server, __name, &len, dentry->d_name.name, 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dentry->d_name.len, !ncp_preserve_case(dir)); 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!res) 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = ncp_obtain_info(server, dir, __name, &(finfo.i)); 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 856e45ca8baa33e0c0228e84126c3a20df3abfd1771Joe Perches ncp_vdbg("looked for %pd2, res=%d\n", dentry, res); 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we didn't find an entry, make a negative dentry. 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto add_entry; 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Create an inode for the entry. 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.opened = 0; 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.ino = iunique(dir->i_sb, 2); 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.volume = finfo.i.volNumber; 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EACCES; 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode = ncp_iget(dir->i_sb, &finfo); 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (inode) { 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_new_dentry(dentry); 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsadd_entry: 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds d_add(dentry, inode); 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = 0; 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfinished: 880e45ca8baa33e0c0228e84126c3a20df3abfd1771Joe Perches ncp_vdbg("result=%d\n", error); 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ERR_PTR(error); 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This code is common to create, mkdir, and mknod. 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ncp_instantiate(struct inode *dir, struct dentry *dentry, 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_entry_info *finfo) 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *inode; 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error = -EINVAL; 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo->ino = iunique(dir->i_sb, 2); 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode = ncp_iget(dir->i_sb, finfo); 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!inode) 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_close; 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds d_instantiate(dentry,inode); 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = 0; 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_close: 903e45ca8baa33e0c0228e84126c3a20df3abfd1771Joe Perches ncp_vdbg("%pd2 failed, closing file\n", dentry); 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_close_file(NCP_SERVER(dir), finfo->file_handle); 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9085eee25cacde61c37f1545a33d7fed88b14349976Al Viroint ncp_create_new(struct inode *dir, struct dentry *dentry, umode_t mode, 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_t rdev, __le32 attributes) 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server = NCP_SERVER(dir); 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_entry_info finfo; 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error, result, len; 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int opmode; 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 __name[NCP_MAXPATHLEN + 1]; 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 917e45ca8baa33e0c0228e84126c3a20df3abfd1771Joe Perches ncp_vdbg("creating %pd2, mode=%hx\n", dentry, mode); 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_age_dentry(server, dentry); 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = sizeof(__name); 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_io2vol(server, __name, &len, dentry->d_name.name, 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dentry->d_name.len, !ncp_preserve_case(dir)); 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EACCES; 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (S_ISREG(mode) && 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (server->m.flags & NCP_MOUNT_EXTRAS) && 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (mode & S_IXUGO)) 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds attributes |= aSYSTEM | aSHARED; 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = ncp_open_create_file_or_subdir(server, dir, __name, 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE, 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds attributes, AR_READ | AR_WRITE, &finfo); 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds opmode = O_RDWR; 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) { 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = ncp_open_create_file_or_subdir(server, dir, __name, 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE, 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds attributes, AR_WRITE, &finfo); 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) { 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result == 0x87) 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -ENAMETOOLONG; 9442e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec else if (result < 0) 9452e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec error = result; 946d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "%pd2 failed\n", dentry); 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds opmode = O_WRONLY; 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.access = opmode; 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_is_nfs_extras(server, finfo.volume)) { 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.i.nfs.mode = mode; 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.i.nfs.rdev = new_encode_dev(rdev); 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_modify_nfs_info(server, finfo.volume, 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.i.dirEntNum, 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode, new_encode_dev(rdev)) != 0) 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_instantiate(dir, dentry, &finfo); 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9664acdaf27ebe2034c342f3be57ef49aed1ad885efAl Virostatic int ncp_create(struct inode *dir, struct dentry *dentry, umode_t mode, 967ebfc3b49a7ac25920cb5be5445f602e51d2ea559Al Viro bool excl) 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ncp_create_new(dir, dentry, mode, 0, 0); 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 97218bb1db3e7607e4a997d50991a6f9fa5b0f8722cAl Virostatic int ncp_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_entry_info finfo; 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server = NCP_SERVER(dir); 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error, len; 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 __name[NCP_MAXPATHLEN + 1]; 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 979d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "making %pd2\n", dentry); 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_age_dentry(server, dentry); 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = sizeof(__name); 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_io2vol(server, __name, &len, dentry->d_name.name, 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dentry->d_name.len, !ncp_preserve_case(dir)); 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9882e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec error = ncp_open_create_file_or_subdir(server, dir, __name, 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds OC_MODE_CREATE, aDIR, 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cpu_to_le16(0xffff), 9912e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec &finfo); 9922e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec if (error == 0) { 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_is_nfs_extras(server, finfo.volume)) { 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= S_IFDIR; 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.i.nfs.mode = mode; 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_modify_nfs_info(server, 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.volume, 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finfo.i.dirEntNum, 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode, 0) != 0) 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_instantiate(dir, dentry, &finfo); 10032e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec } else if (error > 0) { 10042e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec error = -EACCES; 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ncp_rmdir(struct inode *dir, struct dentry *dentry) 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server = NCP_SERVER(dir); 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error, result, len; 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 __name[NCP_MAXPATHLEN + 1]; 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1016d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "removing %pd2\n", dentry); 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = sizeof(__name); 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_io2vol(server, __name, &len, dentry->d_name.name, 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dentry->d_name.len, !ncp_preserve_case(dir)); 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = ncp_del_file_or_subdir(server, dir, __name); 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (result) { 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x00: 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = 0; 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x85: /* unauthorized to delete file */ 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8A: /* unauthorized to delete file */ 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EACCES; 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8F: 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x90: /* read only */ 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EPERM; 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x9F: /* in use by another client */ 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EBUSY; 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0xA0: /* directory not empty */ 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -ENOTEMPTY; 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0xFF: /* someone deleted file */ 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -ENOENT; 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 10472e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec error = result < 0 ? result : -EACCES; 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ncp_unlink(struct inode *dir, struct dentry *dentry) 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *inode = dentry->d_inode; 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server; 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds server = NCP_SERVER(dir); 1061d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "unlinking %pd2\n", dentry); 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Check whether to close the file ... 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (inode) { 1067e45ca8baa33e0c0228e84126c3a20df3abfd1771Joe Perches ncp_vdbg("closing file\n"); 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_make_closed(inode); 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_del_file_or_subdir2(server, dentry); 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_NCPFS_STRONG 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9C is Invalid path.. It should be 8F, 90 - read only, but 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds it is not :-( */ 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((error == 0x9C || error == 0x90) && server->m.flags & NCP_MOUNT_STRONG) { /* R/O */ 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_force_unlink(dir, dentry); 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (error) { 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x00: 1081d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "removed %pd2\n", dentry); 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x85: 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8A: 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EACCES; 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8D: /* some files in use */ 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8E: /* all files in use */ 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EBUSY; 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8F: /* some read only */ 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x90: /* all read only */ 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x9C: /* !!! returned when in-use or read-only by NW4 */ 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EPERM; 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0xFF: 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -ENOENT; 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 11002e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec error = error < 0 ? error : -EACCES; 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ncp_rename(struct inode *old_dir, struct dentry *old_dentry, 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *new_dir, struct dentry *new_dentry) 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ncp_server *server = NCP_SERVER(old_dir); 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int old_len, new_len; 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 __old_name[NCP_MAXPATHLEN + 1], __new_name[NCP_MAXPATHLEN + 1]; 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1114d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "%pd2 to %pd2\n", old_dentry, new_dentry); 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_age_dentry(server, old_dentry); 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncp_age_dentry(server, new_dentry); 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds old_len = sizeof(__old_name); 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_io2vol(server, __old_name, &old_len, 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds old_dentry->d_name.name, old_dentry->d_name.len, 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !ncp_preserve_case(old_dir)); 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_len = sizeof(__new_name); 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_io2vol(server, __new_name, &new_len, 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_dentry->d_name.name, new_dentry->d_name.len, 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !ncp_preserve_case(new_dir)); 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_ren_or_mov_file_or_subdir(server, old_dir, __old_name, 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_dir, __new_name); 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_NCPFS_STRONG 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((error == 0x90 || error == 0x8B || error == -EACCES) && 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds server->m.flags & NCP_MOUNT_STRONG) { /* RO */ 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = ncp_force_rename(old_dir, old_dentry, __old_name, 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_dir, new_dentry, __new_name); 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (error) { 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x00: 1144d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "renamed %pd -> %pd\n", 1145d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches old_dentry, new_dentry); 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x9E: 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -ENAMETOOLONG; 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0xFF: 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -ENOENT; 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 11542e54eb96e2c801f33d95b5dade15212ac4d6c4a5Petr Vandrovec error = error < 0 ? error : -EACCES; 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ncp_mknod(struct inode * dir, struct dentry *dentry, 11621a67aafb5f72a436ca044293309fa7e6351d6a35Al Viro umode_t mode, dev_t rdev) 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!new_valid_dev(rdev)) 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ncp_is_nfs_extras(NCP_SERVER(dir), NCP_FINFO(dir)->volNumber)) { 1167d3b73ca1be3236fc33f896af7e2ba637a677d5c9Joe Perches ncp_dbg(1, "mode = 0%ho\n", mode); 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ncp_create_new(dir, dentry, mode, rdev, 0); 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EPERM; /* Strange, but true */ 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The following routines are taken directly from msdos-fs */ 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Linear day numbers of the respective 1sts in non-leap years. */ 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int day_n[] = 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0}; 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */ 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int utc2local(int time) 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return time - sys_tz.tz_minuteswest * 60; 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int local2utc(int time) 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return time + sys_tz.tz_minuteswest * 60; 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */ 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsncp_date_dos2unix(__le16 t, __le16 d) 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short time = le16_to_cpu(t), date = le16_to_cpu(d); 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int month, year, secs; 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* first subtract and mask after that... Otherwise, if 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds date == 0, bad things happen */ 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds month = ((date >> 5) - 1) & 15; 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds year = date >> 9; 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 86400 * ((date & 31) - 1 + day_n[month] + (year / 4) + 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds year * 365 - ((year & 3) == 0 && month < 2 ? 1 : 0) + 3653); 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* days since 1.1.70 plus 80's leap day */ 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return local2utc(secs); 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Convert linear UNIX date to a MS-DOS time/date pair. */ 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsncp_date_unix2dos(int unix_date, __le16 *time, __le16 *date) 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int day, year, nl_day, month; 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unix_date = utc2local(unix_date); 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *time = cpu_to_le16( 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (unix_date % 60) / 2 + (((unix_date / 60) % 60) << 5) + 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (((unix_date / 3600) % 24) << 11)); 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds day = unix_date / 86400 - 3652; 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds year = day / 365; 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((year + 3) / 4 + 365 * year > day) 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds year--; 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds day -= (year + 3) / 4 + 365 * year; 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (day == 59 && !(year & 3)) { 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nl_day = day; 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds month = 2; 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nl_day = (year & 3) || day <= 59 ? day : day - 1; 1230c5df59136a55fe08c21d39321679cbb008479edfRoel Kluin for (month = 1; month < 12; month++) 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (day_n[month] > nl_day) 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *date = cpu_to_le16(nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9)); 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1236