^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/fs/isofs/inode.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * (C) 1991 Linus Torvalds - minix filesystem
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * 1992, 1993, 1994 Eric Youngdale Modified for ISO 9660 filesystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * 1994 Eberhard Mönkeberg - multi session handling.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * 1995 Mark Dobie - allow mounting of some weird VideoCDs and PhotoCDs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * 1997 Gordon Chaffee - Joliet CDs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * 1998 Eric Lammerts - ISO 9660 Level 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * 2004 Paul Serice - Inode Support pushed out from 4GB to 128GB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * 2004 Paul Serice - NFS Export Operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/cred.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/nls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/statfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/cdrom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/parser.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/mpage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/user_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "isofs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "zisofs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* max tz offset is 13 hours */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define MAX_TZ_OFFSET (52*15*60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define BEQUIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int isofs_hashi(const struct dentry *parent, struct qstr *qstr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static int isofs_dentry_cmpi(const struct dentry *dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) unsigned int len, const char *str, const struct qstr *name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #ifdef CONFIG_JOLIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static int isofs_hashi_ms(const struct dentry *parent, struct qstr *qstr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static int isofs_hash_ms(const struct dentry *parent, struct qstr *qstr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int isofs_dentry_cmpi_ms(const struct dentry *dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) unsigned int len, const char *str, const struct qstr *name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static int isofs_dentry_cmp_ms(const struct dentry *dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) unsigned int len, const char *str, const struct qstr *name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static void isofs_put_super(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct isofs_sb_info *sbi = ISOFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #ifdef CONFIG_JOLIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) unload_nls(sbi->s_nls_iocharset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) kfree(sbi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) sb->s_fs_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static int isofs_read_inode(struct inode *, int relocated);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static int isofs_statfs (struct dentry *, struct kstatfs *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int isofs_show_options(struct seq_file *, struct dentry *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static struct kmem_cache *isofs_inode_cachep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static struct inode *isofs_alloc_inode(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct iso_inode_info *ei;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ei = kmem_cache_alloc(isofs_inode_cachep, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (!ei)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return &ei->vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static void isofs_free_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) kmem_cache_free(isofs_inode_cachep, ISOFS_I(inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static void init_once(void *foo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct iso_inode_info *ei = foo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) inode_init_once(&ei->vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static int __init init_inodecache(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) isofs_inode_cachep = kmem_cache_create("isofs_inode_cache",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) sizeof(struct iso_inode_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) 0, (SLAB_RECLAIM_ACCOUNT|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) SLAB_MEM_SPREAD|SLAB_ACCOUNT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) init_once);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (!isofs_inode_cachep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static void destroy_inodecache(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * Make sure all delayed rcu free inodes are flushed before we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * destroy cache.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) rcu_barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) kmem_cache_destroy(isofs_inode_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static int isofs_remount(struct super_block *sb, int *flags, char *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) sync_filesystem(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (!(*flags & SB_RDONLY))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return -EROFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static const struct super_operations isofs_sops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .alloc_inode = isofs_alloc_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .free_inode = isofs_free_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .put_super = isofs_put_super,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .statfs = isofs_statfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .remount_fs = isofs_remount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .show_options = isofs_show_options,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static const struct dentry_operations isofs_dentry_ops[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .d_hash = isofs_hashi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .d_compare = isofs_dentry_cmpi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #ifdef CONFIG_JOLIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .d_hash = isofs_hash_ms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .d_compare = isofs_dentry_cmp_ms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .d_hash = isofs_hashi_ms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .d_compare = isofs_dentry_cmpi_ms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct iso9660_options{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) unsigned int rock:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) unsigned int joliet:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) unsigned int cruft:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) unsigned int hide:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) unsigned int showassoc:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) unsigned int nocompress:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) unsigned int overriderockperm:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unsigned int uid_set:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) unsigned int gid_set:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) unsigned char map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) unsigned char check;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) unsigned int blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) umode_t fmode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) umode_t dmode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) kgid_t gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) kuid_t uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) char *iocharset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) /* LVE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) s32 session;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) s32 sbsector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * Compute the hash for the isofs name corresponding to the dentry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) isofs_hashi_common(const struct dentry *dentry, struct qstr *qstr, int ms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) char c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) unsigned long hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) len = qstr->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) name = qstr->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (ms) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) while (len && name[len-1] == '.')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) len--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) hash = init_name_hash(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) while (len--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) c = tolower(*name++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) hash = partial_name_hash(c, hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) qstr->hash = end_name_hash(hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * Compare of two isofs names.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static int isofs_dentry_cmp_common(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) unsigned int len, const char *str,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) const struct qstr *name, int ms, int ci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) int alen, blen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) /* A filename cannot end in '.' or we treat it like it has none */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) alen = name->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) blen = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (ms) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) while (alen && name->name[alen-1] == '.')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) alen--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) while (blen && str[blen-1] == '.')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) blen--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (alen == blen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (ci) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (strncasecmp(name->name, str, alen) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (strncmp(name->name, str, alen) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) isofs_hashi(const struct dentry *dentry, struct qstr *qstr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) return isofs_hashi_common(dentry, qstr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) isofs_dentry_cmpi(const struct dentry *dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) unsigned int len, const char *str, const struct qstr *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return isofs_dentry_cmp_common(len, str, name, 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) #ifdef CONFIG_JOLIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * Compute the hash for the isofs name corresponding to the dentry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) isofs_hash_common(const struct dentry *dentry, struct qstr *qstr, int ms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) len = qstr->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) name = qstr->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) if (ms) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) while (len && name[len-1] == '.')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) len--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) qstr->hash = full_name_hash(dentry, name, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) isofs_hash_ms(const struct dentry *dentry, struct qstr *qstr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return isofs_hash_common(dentry, qstr, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) isofs_hashi_ms(const struct dentry *dentry, struct qstr *qstr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) return isofs_hashi_common(dentry, qstr, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) isofs_dentry_cmp_ms(const struct dentry *dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) unsigned int len, const char *str, const struct qstr *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return isofs_dentry_cmp_common(len, str, name, 1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) isofs_dentry_cmpi_ms(const struct dentry *dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) unsigned int len, const char *str, const struct qstr *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return isofs_dentry_cmp_common(len, str, name, 1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) Opt_block, Opt_check_r, Opt_check_s, Opt_cruft, Opt_gid, Opt_ignore,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) Opt_iocharset, Opt_map_a, Opt_map_n, Opt_map_o, Opt_mode, Opt_nojoliet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) Opt_norock, Opt_sb, Opt_session, Opt_uid, Opt_unhide, Opt_utf8, Opt_err,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) Opt_nocompress, Opt_hide, Opt_showassoc, Opt_dmode, Opt_overriderockperm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) static const match_table_t tokens = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) {Opt_norock, "norock"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {Opt_nojoliet, "nojoliet"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) {Opt_unhide, "unhide"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {Opt_hide, "hide"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {Opt_showassoc, "showassoc"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) {Opt_cruft, "cruft"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {Opt_utf8, "utf8"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) {Opt_iocharset, "iocharset=%s"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) {Opt_map_a, "map=acorn"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {Opt_map_a, "map=a"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) {Opt_map_n, "map=normal"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) {Opt_map_n, "map=n"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) {Opt_map_o, "map=off"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {Opt_map_o, "map=o"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {Opt_session, "session=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) {Opt_sb, "sbsector=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) {Opt_check_r, "check=relaxed"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) {Opt_check_r, "check=r"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) {Opt_check_s, "check=strict"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) {Opt_check_s, "check=s"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) {Opt_uid, "uid=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {Opt_gid, "gid=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) {Opt_mode, "mode=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) {Opt_dmode, "dmode=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) {Opt_overriderockperm, "overriderockperm"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) {Opt_block, "block=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) {Opt_ignore, "conv=binary"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) {Opt_ignore, "conv=b"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {Opt_ignore, "conv=text"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {Opt_ignore, "conv=t"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) {Opt_ignore, "conv=mtext"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) {Opt_ignore, "conv=m"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) {Opt_ignore, "conv=auto"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) {Opt_ignore, "conv=a"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) {Opt_nocompress, "nocompress"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {Opt_err, NULL}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) static int parse_options(char *options, struct iso9660_options *popt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) int option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) popt->map = 'n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) popt->rock = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) popt->joliet = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) popt->cruft = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) popt->hide = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) popt->showassoc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) popt->check = 'u'; /* unset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) popt->nocompress = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) popt->blocksize = 1024;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) popt->fmode = popt->dmode = ISOFS_INVALID_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) popt->uid_set = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) popt->gid_set = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) popt->gid = GLOBAL_ROOT_GID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) popt->uid = GLOBAL_ROOT_UID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) popt->iocharset = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) popt->overriderockperm = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) popt->session=-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) popt->sbsector=-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (!options)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) while ((p = strsep(&options, ",")) != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) int token;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) substring_t args[MAX_OPT_ARGS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) unsigned n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (!*p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) token = match_token(p, tokens, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) switch (token) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) case Opt_norock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) popt->rock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) case Opt_nojoliet:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) popt->joliet = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) case Opt_hide:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) popt->hide = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) case Opt_unhide:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) case Opt_showassoc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) popt->showassoc = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) case Opt_cruft:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) popt->cruft = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) #ifdef CONFIG_JOLIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) case Opt_utf8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) kfree(popt->iocharset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) popt->iocharset = kstrdup("utf8", GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (!popt->iocharset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) case Opt_iocharset:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) kfree(popt->iocharset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) popt->iocharset = match_strdup(&args[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (!popt->iocharset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) case Opt_map_a:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) popt->map = 'a';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) case Opt_map_o:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) popt->map = 'o';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) case Opt_map_n:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) popt->map = 'n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) case Opt_session:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (match_int(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) n = option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * Track numbers are supposed to be in range 1-99, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * mount option starts indexing at 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (n >= 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) popt->session = n + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) case Opt_sb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) if (match_int(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) popt->sbsector = option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) case Opt_check_r:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) popt->check = 'r';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) case Opt_check_s:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) popt->check = 's';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) case Opt_ignore:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) case Opt_uid:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) if (match_int(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) popt->uid = make_kuid(current_user_ns(), option);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (!uid_valid(popt->uid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) popt->uid_set = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) case Opt_gid:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (match_int(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) popt->gid = make_kgid(current_user_ns(), option);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) if (!gid_valid(popt->gid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) popt->gid_set = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) case Opt_mode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (match_int(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) popt->fmode = option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) case Opt_dmode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (match_int(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) popt->dmode = option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) case Opt_overriderockperm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) popt->overriderockperm = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) case Opt_block:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (match_int(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) n = option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) if (n != 512 && n != 1024 && n != 2048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) popt->blocksize = n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) case Opt_nocompress:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) popt->nocompress = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * Display the mount options in /proc/mounts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) static int isofs_show_options(struct seq_file *m, struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) struct isofs_sb_info *sbi = ISOFS_SB(root->d_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) if (!sbi->s_rock) seq_puts(m, ",norock");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) else if (!sbi->s_joliet_level) seq_puts(m, ",nojoliet");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (sbi->s_cruft) seq_puts(m, ",cruft");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) if (sbi->s_hide) seq_puts(m, ",hide");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) if (sbi->s_nocompress) seq_puts(m, ",nocompress");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (sbi->s_overriderockperm) seq_puts(m, ",overriderockperm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) if (sbi->s_showassoc) seq_puts(m, ",showassoc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) if (sbi->s_check) seq_printf(m, ",check=%c", sbi->s_check);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (sbi->s_mapping) seq_printf(m, ",map=%c", sbi->s_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (sbi->s_session != 255) seq_printf(m, ",session=%u", sbi->s_session - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) if (sbi->s_sbsector != -1) seq_printf(m, ",sbsector=%u", sbi->s_sbsector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (root->d_sb->s_blocksize != 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) seq_printf(m, ",blocksize=%lu", root->d_sb->s_blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (sbi->s_uid_set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) seq_printf(m, ",uid=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) from_kuid_munged(&init_user_ns, sbi->s_uid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (sbi->s_gid_set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) seq_printf(m, ",gid=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) from_kgid_munged(&init_user_ns, sbi->s_gid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) if (sbi->s_dmode != ISOFS_INVALID_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) seq_printf(m, ",dmode=%o", sbi->s_dmode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) if (sbi->s_fmode != ISOFS_INVALID_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) seq_printf(m, ",fmode=%o", sbi->s_fmode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) #ifdef CONFIG_JOLIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (sbi->s_nls_iocharset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) seq_printf(m, ",iocharset=%s", sbi->s_nls_iocharset->charset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) seq_puts(m, ",iocharset=utf8");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * look if the driver can tell the multi session redirection value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * don't change this if you don't know what you do, please!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) * Multisession is legal only with XA disks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) * A non-XA disk with more than one volume descriptor may do it right, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) * usually is written in a nowhere standardized "multi-partition" manner.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * Multisession uses absolute addressing (solely the first frame of the whole
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * track is #0), multi-partition uses relative addressing (each first frame of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) * each track is #0), and a track is not a session.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) * A broken CDwriter software or drive firmware does not set new standards,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) * at least not if conflicting with the existing ones.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * emoenke@gwdg.de
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) #define WE_OBEY_THE_WRITTEN_STANDARDS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) static unsigned int isofs_get_last_session(struct super_block *sb, s32 session)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) struct cdrom_device_info *cdi = disk_to_cdi(sb->s_bdev->bd_disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) unsigned int vol_desc_start = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (session > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct cdrom_tocentry te;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (!cdi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) te.cdte_track = session;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) te.cdte_format = CDROM_LBA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) if (cdrom_read_tocentry(cdi, &te) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) printk(KERN_DEBUG "ISOFS: Session %d start %d type %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) session, te.cdte_addr.lba,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) te.cdte_ctrl & CDROM_DATA_TRACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) if ((te.cdte_ctrl & CDROM_DATA_TRACK) == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) return te.cdte_addr.lba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) printk(KERN_ERR "ISOFS: Invalid session number or type of track\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) if (cdi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct cdrom_multisession ms_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) ms_info.addr_format = CDROM_LBA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (cdrom_multisession(cdi, &ms_info) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) #if WE_OBEY_THE_WRITTEN_STANDARDS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) /* necessary for a valid ms_info.addr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (ms_info.xa_flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) vol_desc_start = ms_info.addr.lba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) return vol_desc_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) * Check if root directory is empty (has less than 3 files).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * Used to detect broken CDs where ISO root directory is empty but Joliet root
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) * directory is OK. If such CD has Rock Ridge extensions, they will be disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) * (and Joliet used instead) or else no files would be visible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) static bool rootdir_empty(struct super_block *sb, unsigned long block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) int offset = 0, files = 0, de_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) struct iso_directory_record *de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) bh = sb_bread(sb, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) if (!bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) while (files < 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) de = (struct iso_directory_record *) (bh->b_data + offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) de_len = *(unsigned char *) de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (de_len == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) files++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) offset += de_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) return files < 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * Initialize the superblock and read the root inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) static int isofs_fill_super(struct super_block *s, void *data, int silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) struct buffer_head *bh = NULL, *pri_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) struct hs_primary_descriptor *h_pri = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) struct iso_primary_descriptor *pri = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) struct iso_supplementary_descriptor *sec = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) struct iso_directory_record *rootp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) struct iso9660_options opt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) struct isofs_sb_info *sbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) unsigned long first_data_zone;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) int joliet_level = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) int iso_blknum, block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) int orig_zonesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) int table, error = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) unsigned int vol_desc_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) if (!sbi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) s->s_fs_info = sbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) if (!parse_options((char *)data, &opt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) goto out_freesbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) * First of all, get the hardware blocksize for this device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) * If we don't know what it is, or the hardware blocksize is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) * larger than the blocksize the user specified, then use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) * that value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) * What if bugger tells us to go beyond page size?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) if (bdev_logical_block_size(s->s_bdev) > 2048) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) printk(KERN_WARNING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) "ISOFS: unsupported/invalid hardware sector size %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) bdev_logical_block_size(s->s_bdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) goto out_freesbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) opt.blocksize = sb_min_blocksize(s, opt.blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) sbi->s_high_sierra = 0; /* default is iso9660 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) sbi->s_session = opt.session;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) sbi->s_sbsector = opt.sbsector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) vol_desc_start = (opt.sbsector != -1) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) opt.sbsector : isofs_get_last_session(s,opt.session);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) for (iso_blknum = vol_desc_start+16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) iso_blknum < vol_desc_start+100; iso_blknum++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) struct hs_volume_descriptor *hdp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) struct iso_volume_descriptor *vdp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) block = iso_blknum << (ISOFS_BLOCK_BITS - s->s_blocksize_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) if (!(bh = sb_bread(s, block)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) goto out_no_read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) vdp = (struct iso_volume_descriptor *)bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) hdp = (struct hs_volume_descriptor *)bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * Due to the overlapping physical location of the descriptors,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) * ISO CDs can match hdp->id==HS_STANDARD_ID as well. To ensure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) * proper identification in this case, we first check for ISO.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) if (strncmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) if (isonum_711(vdp->type) == ISO_VD_END)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) if (isonum_711(vdp->type) == ISO_VD_PRIMARY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) if (!pri) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) pri = (struct iso_primary_descriptor *)vdp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) /* Save the buffer in case we need it ... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) pri_bh = bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) #ifdef CONFIG_JOLIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) else if (isonum_711(vdp->type) == ISO_VD_SUPPLEMENTARY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) sec = (struct iso_supplementary_descriptor *)vdp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) if (sec->escape[0] == 0x25 && sec->escape[1] == 0x2f) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) if (opt.joliet) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (sec->escape[2] == 0x40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) joliet_level = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) else if (sec->escape[2] == 0x43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) joliet_level = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) else if (sec->escape[2] == 0x45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) joliet_level = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) printk(KERN_DEBUG "ISO 9660 Extensions: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) "Microsoft Joliet Level %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) joliet_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) goto root_found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) /* Unknown supplementary volume descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) sec = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) if (strncmp (hdp->id, HS_STANDARD_ID, sizeof hdp->id) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) if (isonum_711(hdp->type) != ISO_VD_PRIMARY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) goto out_freebh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) sbi->s_high_sierra = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) opt.rock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) h_pri = (struct hs_primary_descriptor *)vdp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) goto root_found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) /* Just skip any volume descriptors we don't recognize */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) * If we fall through, either no volume descriptor was found,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) * or else we passed a primary descriptor looking for others.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) if (!pri)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) goto out_unknown_format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) bh = pri_bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) pri_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) root_found:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) /* We don't support read-write mounts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) if (!sb_rdonly(s)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) error = -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) goto out_freebh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) if (joliet_level && (!pri || !opt.rock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) /* This is the case of Joliet with the norock mount flag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) * A disc with both Joliet and Rock Ridge is handled later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) pri = (struct iso_primary_descriptor *) sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) if(sbi->s_high_sierra){
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) rootp = (struct iso_directory_record *) h_pri->root_directory_record;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) sbi->s_nzones = isonum_733(h_pri->volume_space_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) sbi->s_log_zone_size = isonum_723(h_pri->logical_block_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) sbi->s_max_size = isonum_733(h_pri->volume_space_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) if (!pri)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) goto out_freebh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) rootp = (struct iso_directory_record *) pri->root_directory_record;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) sbi->s_nzones = isonum_733(pri->volume_space_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) sbi->s_log_zone_size = isonum_723(pri->logical_block_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) sbi->s_max_size = isonum_733(pri->volume_space_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) sbi->s_ninodes = 0; /* No way to figure this out easily */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) orig_zonesize = sbi->s_log_zone_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) * If the zone size is smaller than the hardware sector size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) * this is a fatal error. This would occur if the disc drive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) * had sectors that were 2048 bytes, but the filesystem had
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) * blocks that were 512 bytes (which should only very rarely
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) * happen.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) if (orig_zonesize < opt.blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) goto out_bad_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) /* RDE: convert log zone size to bit shift */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) switch (sbi->s_log_zone_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) case 512: sbi->s_log_zone_size = 9; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) case 1024: sbi->s_log_zone_size = 10; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) case 2048: sbi->s_log_zone_size = 11; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) goto out_bad_zone_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) s->s_magic = ISOFS_SUPER_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) * With multi-extent files, file size is only limited by the maximum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) * size of a file system, which is 8 TB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) s->s_maxbytes = 0x80000000000LL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) /* ECMA-119 timestamp from 1900/1/1 with tz offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) s->s_time_min = mktime64(1900, 1, 1, 0, 0, 0) - MAX_TZ_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) s->s_time_max = mktime64(U8_MAX+1900, 12, 31, 23, 59, 59) + MAX_TZ_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) /* Set this for reference. Its not currently used except on write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) which we don't have .. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) first_data_zone = isonum_733(rootp->extent) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) isonum_711(rootp->ext_attr_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) sbi->s_firstdatazone = first_data_zone;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) #ifndef BEQUIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) printk(KERN_DEBUG "ISOFS: Max size:%ld Log zone size:%ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) sbi->s_max_size, 1UL << sbi->s_log_zone_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) printk(KERN_DEBUG "ISOFS: First datazone:%ld\n", sbi->s_firstdatazone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) if(sbi->s_high_sierra)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) printk(KERN_DEBUG "ISOFS: Disc in High Sierra format.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * If the Joliet level is set, we _may_ decide to use the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) * secondary descriptor, but can't be sure until after we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) * read the root inode. But before reading the root inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * we may need to change the device blocksize, and would
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) * rather release the old buffer first. So, we cache the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) * first_data_zone value from the secondary descriptor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) if (joliet_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) pri = (struct iso_primary_descriptor *) sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) rootp = (struct iso_directory_record *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) pri->root_directory_record;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) first_data_zone = isonum_733(rootp->extent) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) isonum_711(rootp->ext_attr_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) * We're all done using the volume descriptor, and may need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) * to change the device blocksize, so release the buffer now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) brelse(pri_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) * Force the blocksize to 512 for 512 byte sectors. The file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) * read primitives really get it wrong in a bad way if we don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) * do this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) * Note - we should never be setting the blocksize to something
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) * less than the hardware sector size for the device. If we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) * do, we would end up having to read larger buffers and split
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) * out portions to satisfy requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) * Note2- the idea here is that we want to deal with the optimal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) * zonesize in the filesystem. If we have it set to something less,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) * then we have horrible problems with trying to piece together
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) * bits of adjacent blocks in order to properly read directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) * entries. By forcing the blocksize in this way, we ensure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) * that we will never be required to do this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) sb_set_blocksize(s, orig_zonesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) sbi->s_nls_iocharset = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) #ifdef CONFIG_JOLIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) if (joliet_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) char *p = opt.iocharset ? opt.iocharset : CONFIG_NLS_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) if (strcmp(p, "utf8") != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) sbi->s_nls_iocharset = opt.iocharset ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) load_nls(opt.iocharset) : load_nls_default();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) if (!sbi->s_nls_iocharset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) goto out_freesbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) s->s_op = &isofs_sops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) s->s_export_op = &isofs_export_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) sbi->s_mapping = opt.map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) sbi->s_rock = (opt.rock ? 2 : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) sbi->s_rock_offset = -1; /* initial offset, will guess until SP is found*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) sbi->s_cruft = opt.cruft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) sbi->s_hide = opt.hide;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) sbi->s_showassoc = opt.showassoc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) sbi->s_uid = opt.uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) sbi->s_gid = opt.gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) sbi->s_uid_set = opt.uid_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) sbi->s_gid_set = opt.gid_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) sbi->s_nocompress = opt.nocompress;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) sbi->s_overriderockperm = opt.overriderockperm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) * It would be incredibly stupid to allow people to mark every file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) * on the disk as suid, so we merely allow them to set the default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) * permissions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) if (opt.fmode != ISOFS_INVALID_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) sbi->s_fmode = opt.fmode & 0777;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) sbi->s_fmode = ISOFS_INVALID_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) if (opt.dmode != ISOFS_INVALID_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) sbi->s_dmode = opt.dmode & 0777;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) sbi->s_dmode = ISOFS_INVALID_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) * Read the root inode, which _may_ result in changing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) * the s_rock flag. Once we have the final s_rock value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) * we then decide whether to use the Joliet descriptor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) inode = isofs_iget(s, sbi->s_firstdatazone, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) if (IS_ERR(inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) goto out_no_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) * Fix for broken CDs with Rock Ridge and empty ISO root directory but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) * correct Joliet root directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) if (sbi->s_rock == 1 && joliet_level &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) rootdir_empty(s, sbi->s_firstdatazone)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) printk(KERN_NOTICE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) "ISOFS: primary root directory is empty. "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) "Disabling Rock Ridge and switching to Joliet.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) sbi->s_rock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) * If this disk has both Rock Ridge and Joliet on it, then we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) * want to use Rock Ridge by default. This can be overridden
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) * by using the norock mount option. There is still one other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) * possibility that is not taken into account: a Rock Ridge
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) * CD with Unicode names. Until someone sees such a beast, it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) * will not be supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) if (sbi->s_rock == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) joliet_level = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) } else if (joliet_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) sbi->s_rock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) if (sbi->s_firstdatazone != first_data_zone) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) sbi->s_firstdatazone = first_data_zone;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) printk(KERN_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) "ISOFS: changing to secondary root\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) inode = isofs_iget(s, sbi->s_firstdatazone, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) if (IS_ERR(inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) goto out_no_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) if (opt.check == 'u') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) /* Only Joliet is case insensitive by default */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) if (joliet_level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) opt.check = 'r';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) opt.check = 's';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) sbi->s_joliet_level = joliet_level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) /* Make sure the root inode is a directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) if (!S_ISDIR(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) printk(KERN_WARNING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) "isofs_fill_super: root inode is not a directory. "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) "Corrupted media?\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) goto out_iput;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) table = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) if (joliet_level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) table += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) if (opt.check == 'r')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) table++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) sbi->s_check = opt.check;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) if (table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) s->s_d_op = &isofs_dentry_ops[table - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) /* get the root dentry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) s->s_root = d_make_root(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) if (!(s->s_root)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) goto out_no_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) kfree(opt.iocharset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) * Display error messages and free resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) out_iput:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) goto out_no_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) out_no_root:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) error = PTR_ERR(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) if (error != -ENOMEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) printk(KERN_WARNING "%s: get root inode failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) out_no_inode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) #ifdef CONFIG_JOLIET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) unload_nls(sbi->s_nls_iocharset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) goto out_freesbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) out_no_read:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) printk(KERN_WARNING "%s: bread failed, dev=%s, iso_blknum=%d, block=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) __func__, s->s_id, iso_blknum, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) goto out_freebh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) out_bad_zone_size:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) printk(KERN_WARNING "ISOFS: Bad logical zone size %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) sbi->s_log_zone_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) goto out_freebh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) out_bad_size:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) printk(KERN_WARNING "ISOFS: Logical zone size(%d) < hardware blocksize(%u)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) orig_zonesize, opt.blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) goto out_freebh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) out_unknown_format:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) if (!silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) printk(KERN_WARNING "ISOFS: Unable to identify CD-ROM format.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) out_freebh:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) brelse(pri_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) out_freesbi:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) kfree(opt.iocharset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) kfree(sbi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) s->s_fs_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) static int isofs_statfs (struct dentry *dentry, struct kstatfs *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) struct super_block *sb = dentry->d_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) buf->f_type = ISOFS_SUPER_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) buf->f_bsize = sb->s_blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) buf->f_blocks = (ISOFS_SB(sb)->s_nzones
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) << (ISOFS_SB(sb)->s_log_zone_size - sb->s_blocksize_bits));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) buf->f_bfree = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) buf->f_bavail = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) buf->f_files = ISOFS_SB(sb)->s_ninodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) buf->f_ffree = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) buf->f_fsid = u64_to_fsid(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) buf->f_namelen = NAME_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) * Get a set of blocks; filling in buffer_heads if already allocated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) * or getblk() if they are not. Returns the number of blocks inserted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) * (-ve == error.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) int isofs_get_blocks(struct inode *inode, sector_t iblock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) struct buffer_head **bh, unsigned long nblocks)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) unsigned long b_off = iblock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) unsigned offset, sect_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) unsigned int firstext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) unsigned long nextblk, nextoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) int section, rv, error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) struct iso_inode_info *ei = ISOFS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) error = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) rv = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) if (iblock != b_off) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) printk(KERN_DEBUG "%s: block number too large\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) firstext = ei->i_first_extent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) sect_size = ei->i_section_size >> ISOFS_BUFFER_BITS(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) nextblk = ei->i_next_section_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) nextoff = ei->i_next_section_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) section = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) while (nblocks) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) /* If we are *way* beyond the end of the file, print a message.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) * Access beyond the end of the file up to the next page boundary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) * is normal, however because of the way the page cache works.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) * In this case, we just return 0 so that we can properly fill
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) * the page with useless information without generating any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) * I/O errors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) if (b_off > ((inode->i_size + PAGE_SIZE - 1) >> ISOFS_BUFFER_BITS(inode))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) printk(KERN_DEBUG "%s: block >= EOF (%lu, %llu)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) __func__, b_off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) (unsigned long long)inode->i_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) /* On the last section, nextblk == 0, section size is likely to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) * exceed sect_size by a partial block, and access beyond the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) * end of the file will reach beyond the section size, too.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) while (nextblk && (b_off >= (offset + sect_size))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) struct inode *ninode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) offset += sect_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) ninode = isofs_iget(inode->i_sb, nextblk, nextoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) if (IS_ERR(ninode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) error = PTR_ERR(ninode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) firstext = ISOFS_I(ninode)->i_first_extent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) sect_size = ISOFS_I(ninode)->i_section_size >> ISOFS_BUFFER_BITS(ninode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) nextblk = ISOFS_I(ninode)->i_next_section_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) nextoff = ISOFS_I(ninode)->i_next_section_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) iput(ninode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) if (++section > 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) printk(KERN_DEBUG "%s: More than 100 file sections ?!?"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) " aborting...\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) printk(KERN_DEBUG "%s: block=%lu firstext=%u sect_size=%u "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) "nextblk=%lu nextoff=%lu\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) b_off, firstext, (unsigned) sect_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) nextblk, nextoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) if (*bh) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) map_bh(*bh, inode->i_sb, firstext + b_off - offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) *bh = sb_getblk(inode->i_sb, firstext+b_off-offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) if (!*bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) goto abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) bh++; /* Next buffer head */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) b_off++; /* Next buffer offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) nblocks--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) rv++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) abort:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) return rv != 0 ? rv : error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) * Used by the standard interfaces.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) static int isofs_get_block(struct inode *inode, sector_t iblock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) struct buffer_head *bh_result, int create)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) if (create) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) printk(KERN_DEBUG "%s: Kernel tries to allocate a block\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) return -EROFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) ret = isofs_get_blocks(inode, iblock, &bh_result, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) return ret < 0 ? ret : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) static int isofs_bmap(struct inode *inode, sector_t block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) struct buffer_head dummy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) dummy.b_state = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) dummy.b_blocknr = -1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) error = isofs_get_block(inode, block, &dummy, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) return dummy.b_blocknr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) struct buffer_head *isofs_bread(struct inode *inode, sector_t block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) sector_t blknr = isofs_bmap(inode, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) if (!blknr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) return sb_bread(inode->i_sb, blknr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) static int isofs_readpage(struct file *file, struct page *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) return mpage_readpage(page, isofs_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) static void isofs_readahead(struct readahead_control *rac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) mpage_readahead(rac, isofs_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) static sector_t _isofs_bmap(struct address_space *mapping, sector_t block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) return generic_block_bmap(mapping,block,isofs_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) static const struct address_space_operations isofs_aops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) .readpage = isofs_readpage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) .readahead = isofs_readahead,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) .bmap = _isofs_bmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) static int isofs_read_level3_size(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) unsigned long bufsize = ISOFS_BUFFER_SIZE(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) int high_sierra = ISOFS_SB(inode->i_sb)->s_high_sierra;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) struct buffer_head *bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) unsigned long block, offset, block_saved, offset_saved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) int more_entries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) struct iso_directory_record *tmpde = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) struct iso_inode_info *ei = ISOFS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) inode->i_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) /* The first 16 blocks are reserved as the System Area. Thus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) * no inodes can appear in block 0. We use this to flag that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) * this is the last section. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) ei->i_next_section_block = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) ei->i_next_section_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) block = ei->i_iget5_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) offset = ei->i_iget5_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) struct iso_directory_record *de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) unsigned int de_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) if (!bh) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) bh = sb_bread(inode->i_sb, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) if (!bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) goto out_noread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) de = (struct iso_directory_record *) (bh->b_data + offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) de_len = *(unsigned char *) de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) if (de_len == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) ++block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) block_saved = block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) offset_saved = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) offset += de_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) /* Make sure we have a full directory entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) if (offset >= bufsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) int slop = bufsize - offset + de_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) if (!tmpde) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) tmpde = kmalloc(256, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) if (!tmpde)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) goto out_nomem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) memcpy(tmpde, de, slop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) offset &= bufsize - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) block++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) if (offset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) bh = sb_bread(inode->i_sb, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) if (!bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) goto out_noread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) memcpy((void *)tmpde+slop, bh->b_data, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) de = tmpde;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) inode->i_size += isonum_733(de->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) if (i == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) ei->i_next_section_block = block_saved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) ei->i_next_section_offset = offset_saved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) more_entries = de->flags[-high_sierra] & 0x80;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) if (i > 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) goto out_toomany;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) } while (more_entries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) kfree(tmpde);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) if (bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) out_nomem:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) if (bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) out_noread:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) printk(KERN_INFO "ISOFS: unable to read i-node block %lu\n", block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) kfree(tmpde);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) out_toomany:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) printk(KERN_INFO "%s: More than 100 file sections ?!?, aborting...\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) "isofs_read_level3_size: inode=%lu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) __func__, inode->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) static int isofs_read_inode(struct inode *inode, int relocated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) struct super_block *sb = inode->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) struct isofs_sb_info *sbi = ISOFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) unsigned long bufsize = ISOFS_BUFFER_SIZE(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) unsigned long block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) int high_sierra = sbi->s_high_sierra;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) struct iso_directory_record *de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) struct iso_directory_record *tmpde = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) unsigned int de_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) unsigned long offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) struct iso_inode_info *ei = ISOFS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) int ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) block = ei->i_iget5_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) bh = sb_bread(inode->i_sb, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) if (!bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) goto out_badread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) offset = ei->i_iget5_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) de = (struct iso_directory_record *) (bh->b_data + offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) de_len = *(unsigned char *) de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) if (de_len < sizeof(struct iso_directory_record))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) if (offset + de_len > bufsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) int frag1 = bufsize - offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) tmpde = kmalloc(de_len, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) if (!tmpde) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) memcpy(tmpde, bh->b_data + offset, frag1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) bh = sb_bread(inode->i_sb, ++block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) if (!bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) goto out_badread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) memcpy((char *)tmpde+frag1, bh->b_data, de_len - frag1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) de = tmpde;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) inode->i_ino = isofs_get_ino(ei->i_iget5_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) ei->i_iget5_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) ISOFS_BUFFER_BITS(inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) /* Assume it is a normal-format file unless told otherwise */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) ei->i_file_format = isofs_file_normal;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) if (de->flags[-high_sierra] & 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) if (sbi->s_dmode != ISOFS_INVALID_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) inode->i_mode = S_IFDIR | sbi->s_dmode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) set_nlink(inode, 1); /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) * Set to 1. We know there are 2, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) * the find utility tries to optimize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) * if it is 2, and it screws up. It is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) * easier to give 1 which tells find to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) * do it the hard way.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) if (sbi->s_fmode != ISOFS_INVALID_MODE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) inode->i_mode = S_IFREG | sbi->s_fmode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) * Set default permissions: r-x for all. The disc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) * could be shared with DOS machines so virtually
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) * anything could be a valid executable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) inode->i_mode = S_IFREG | S_IRUGO | S_IXUGO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) set_nlink(inode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) inode->i_uid = sbi->s_uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) inode->i_gid = sbi->s_gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) inode->i_blocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) ei->i_format_parm[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) ei->i_format_parm[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) ei->i_format_parm[2] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) ei->i_section_size = isonum_733(de->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) if (de->flags[-high_sierra] & 0x80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) ret = isofs_read_level3_size(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) ei->i_next_section_block = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) ei->i_next_section_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) inode->i_size = isonum_733(de->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) * Some dipshit decided to store some other bit of information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) * in the high byte of the file length. Truncate size in case
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) * this CDROM was mounted with the cruft option.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) if (sbi->s_cruft)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) inode->i_size &= 0x00ffffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) if (de->interleave[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) printk(KERN_DEBUG "ISOFS: Interleaved files not (yet) supported.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) inode->i_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) /* I have no idea what file_unit_size is used for, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) we will flag it for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) if (de->file_unit_size[0] != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) printk(KERN_DEBUG "ISOFS: File unit size != 0 for ISO file (%ld).\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) inode->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) /* I have no idea what other flag bits are used for, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) we will flag it for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) if((de->flags[-high_sierra] & ~2)!= 0){
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) printk(KERN_DEBUG "ISOFS: Unusual flag settings for ISO file "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) "(%ld %x).\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) inode->i_ino, de->flags[-high_sierra]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) inode->i_mtime.tv_sec =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) inode->i_atime.tv_sec =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) inode->i_ctime.tv_sec = iso_date(de->date, high_sierra);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) inode->i_mtime.tv_nsec =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) inode->i_atime.tv_nsec =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) inode->i_ctime.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) ei->i_first_extent = (isonum_733(de->extent) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) isonum_711(de->ext_attr_length));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) /* Set the number of blocks for stat() - should be done before RR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) inode->i_blocks = (inode->i_size + 511) >> 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) * Now test for possible Rock Ridge extensions which will override
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) * some of these numbers in the inode structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) if (!high_sierra) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) parse_rock_ridge_inode(de, inode, relocated);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) /* if we want uid/gid set, override the rock ridge setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) if (sbi->s_uid_set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) inode->i_uid = sbi->s_uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) if (sbi->s_gid_set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) inode->i_gid = sbi->s_gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) /* Now set final access rights if overriding rock ridge setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) if (S_ISDIR(inode->i_mode) && sbi->s_overriderockperm &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) sbi->s_dmode != ISOFS_INVALID_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) inode->i_mode = S_IFDIR | sbi->s_dmode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) if (S_ISREG(inode->i_mode) && sbi->s_overriderockperm &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) sbi->s_fmode != ISOFS_INVALID_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) inode->i_mode = S_IFREG | sbi->s_fmode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) /* Install the inode operations vector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) if (S_ISREG(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) inode->i_fop = &generic_ro_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) switch (ei->i_file_format) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) #ifdef CONFIG_ZISOFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) case isofs_file_compressed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) inode->i_data.a_ops = &zisofs_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) inode->i_data.a_ops = &isofs_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) } else if (S_ISDIR(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) inode->i_op = &isofs_dir_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) inode->i_fop = &isofs_dir_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) } else if (S_ISLNK(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) inode->i_op = &page_symlink_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) inode_nohighmem(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) inode->i_data.a_ops = &isofs_symlink_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) /* XXX - parse_rock_ridge_inode() had already set i_rdev. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) init_special_inode(inode, inode->i_mode, inode->i_rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) kfree(tmpde);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) if (bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) out_badread:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) printk(KERN_WARNING "ISOFS: unable to read i-node block\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) struct isofs_iget5_callback_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) unsigned long block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) unsigned long offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) static int isofs_iget5_test(struct inode *ino, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) struct iso_inode_info *i = ISOFS_I(ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) struct isofs_iget5_callback_data *d =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) (struct isofs_iget5_callback_data*)data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) return (i->i_iget5_block == d->block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) && (i->i_iget5_offset == d->offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) static int isofs_iget5_set(struct inode *ino, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) struct iso_inode_info *i = ISOFS_I(ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) struct isofs_iget5_callback_data *d =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) (struct isofs_iget5_callback_data*)data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) i->i_iget5_block = d->block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) i->i_iget5_offset = d->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) /* Store, in the inode's containing structure, the block and block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) * offset that point to the underlying meta-data for the inode. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) * code below is otherwise similar to the iget() code in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) * include/linux/fs.h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) struct inode *__isofs_iget(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) unsigned long block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) unsigned long offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) int relocated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) unsigned long hashval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) struct isofs_iget5_callback_data data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) long ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) if (offset >= 1ul << sb->s_blocksize_bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) data.block = block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) data.offset = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) hashval = (block << sb->s_blocksize_bits) | offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) inode = iget5_locked(sb, hashval, &isofs_iget5_test,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) &isofs_iget5_set, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) if (!inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) if (inode->i_state & I_NEW) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) ret = isofs_read_inode(inode, relocated);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) iget_failed(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) inode = ERR_PTR(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) unlock_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) static struct dentry *isofs_mount(struct file_system_type *fs_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) int flags, const char *dev_name, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) return mount_bdev(fs_type, flags, dev_name, data, isofs_fill_super);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) static struct file_system_type iso9660_fs_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) .name = "iso9660",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) .mount = isofs_mount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) .kill_sb = kill_block_super,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) .fs_flags = FS_REQUIRES_DEV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) MODULE_ALIAS_FS("iso9660");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) MODULE_ALIAS("iso9660");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) static int __init init_iso9660_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) int err = init_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) #ifdef CONFIG_ZISOFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) err = zisofs_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) goto out1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) err = register_filesystem(&iso9660_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) goto out2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) out2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) #ifdef CONFIG_ZISOFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) zisofs_cleanup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) out1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) destroy_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) static void __exit exit_iso9660_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) unregister_filesystem(&iso9660_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) #ifdef CONFIG_ZISOFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) zisofs_cleanup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) destroy_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) module_init(init_iso9660_fs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) module_exit(exit_iso9660_fs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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