diff options
Diffstat (limited to 'fs/isofs/inode.c')
| -rw-r--r-- | fs/isofs/inode.c | 83 |
1 files changed, 31 insertions, 52 deletions
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index 67ce52507d7..4556ce1af5b 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -28,31 +28,23 @@ #define BEQUIET -static int isofs_hashi(const struct dentry *parent, const struct inode *inode, - struct qstr *qstr); -static int isofs_hash(const struct dentry *parent, const struct inode *inode, - struct qstr *qstr); +static int isofs_hashi(const struct dentry *parent, struct qstr *qstr); +static int isofs_hash(const struct dentry *parent, struct qstr *qstr); static int isofs_dentry_cmpi(const struct dentry *parent, - const struct inode *pinode, - const struct dentry *dentry, const struct inode *inode, + const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name); static int isofs_dentry_cmp(const struct dentry *parent, - const struct inode *pinode, - const struct dentry *dentry, const struct inode *inode, + const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name); #ifdef CONFIG_JOLIET -static int isofs_hashi_ms(const struct dentry *parent, const struct inode *inode, - struct qstr *qstr); -static int isofs_hash_ms(const struct dentry *parent, const struct inode *inode, - struct qstr *qstr); +static int isofs_hashi_ms(const struct dentry *parent, struct qstr *qstr); +static int isofs_hash_ms(const struct dentry *parent, struct qstr *qstr); static int isofs_dentry_cmpi_ms(const struct dentry *parent, - const struct inode *pinode, - const struct dentry *dentry, const struct inode *inode, + const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name); static int isofs_dentry_cmp_ms(const struct dentry *parent, - const struct inode *pinode, - const struct dentry *dentry, const struct inode *inode, + const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name); #endif @@ -101,7 +93,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { isofs_inode_cachep = kmem_cache_create("isofs_inode_cache", sizeof(struct iso_inode_info), @@ -125,8 +117,9 @@ static void destroy_inodecache(void) static int isofs_remount(struct super_block *sb, int *flags, char *data) { - /* we probably want a lot more here */ - *flags |= MS_RDONLY; + sync_filesystem(sb); + if (!(*flags & MS_RDONLY)) + return -EROFS; return 0; } @@ -189,7 +182,7 @@ struct iso9660_options{ * Compute the hash for the isofs name corresponding to the dentry. */ static int -isofs_hash_common(const struct dentry *dentry, struct qstr *qstr, int ms) +isofs_hash_common(struct qstr *qstr, int ms) { const char *name; int len; @@ -210,7 +203,7 @@ isofs_hash_common(const struct dentry *dentry, struct qstr *qstr, int ms) * Compute the hash for the isofs name corresponding to the dentry. */ static int -isofs_hashi_common(const struct dentry *dentry, struct qstr *qstr, int ms) +isofs_hashi_common(struct qstr *qstr, int ms) { const char *name; int len; @@ -265,30 +258,26 @@ static int isofs_dentry_cmp_common( } static int -isofs_hash(const struct dentry *dentry, const struct inode *inode, - struct qstr *qstr) +isofs_hash(const struct dentry *dentry, struct qstr *qstr) { - return isofs_hash_common(dentry, qstr, 0); + return isofs_hash_common(qstr, 0); } static int -isofs_hashi(const struct dentry *dentry, const struct inode *inode, - struct qstr *qstr) +isofs_hashi(const struct dentry *dentry, struct qstr *qstr) { - return isofs_hashi_common(dentry, qstr, 0); + return isofs_hashi_common(qstr, 0); } static int -isofs_dentry_cmp(const struct dentry *parent, const struct inode *pinode, - const struct dentry *dentry, const struct inode *inode, +isofs_dentry_cmp(const struct dentry *parent, const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name) { return isofs_dentry_cmp_common(len, str, name, 0, 0); } static int -isofs_dentry_cmpi(const struct dentry *parent, const struct inode *pinode, - const struct dentry *dentry, const struct inode *inode, +isofs_dentry_cmpi(const struct dentry *parent, const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name) { return isofs_dentry_cmp_common(len, str, name, 0, 1); @@ -296,30 +285,26 @@ isofs_dentry_cmpi(const struct dentry *parent, const struct inode *pinode, #ifdef CONFIG_JOLIET static int -isofs_hash_ms(const struct dentry *dentry, const struct inode *inode, - struct qstr *qstr) +isofs_hash_ms(const struct dentry *dentry, struct qstr *qstr) { - return isofs_hash_common(dentry, qstr, 1); + return isofs_hash_common(qstr, 1); } static int -isofs_hashi_ms(const struct dentry *dentry, const struct inode *inode, - struct qstr *qstr) +isofs_hashi_ms(const struct dentry *dentry, struct qstr *qstr) { - return isofs_hashi_common(dentry, qstr, 1); + return isofs_hashi_common(qstr, 1); } static int -isofs_dentry_cmp_ms(const struct dentry *parent, const struct inode *pinode, - const struct dentry *dentry, const struct inode *inode, +isofs_dentry_cmp_ms(const struct dentry *parent, const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name) { return isofs_dentry_cmp_common(len, str, name, 1, 0); } static int -isofs_dentry_cmpi_ms(const struct dentry *parent, const struct inode *pinode, - const struct dentry *dentry, const struct inode *inode, +isofs_dentry_cmpi_ms(const struct dentry *parent, const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name) { return isofs_dentry_cmp_common(len, str, name, 1, 1); @@ -779,15 +764,6 @@ root_found: */ s->s_maxbytes = 0x80000000000LL; - /* - * The CDROM is read-only, has no nodes (devices) on it, and since - * all of the files appear to be owned by root, we really do not want - * to allow suid. (suid or devices will not show up unless we have - * Rock Ridge extensions) - */ - - s->s_flags |= MS_RDONLY /* | MS_NODEV | MS_NOSUID */; - /* Set this for reference. Its not currently used except on write which we don't have .. */ @@ -1546,6 +1522,9 @@ struct inode *isofs_iget(struct super_block *sb, static struct dentry *isofs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { + /* We don't support read-write mounts */ + if (!(flags & MS_RDONLY)) + return ERR_PTR(-EACCES); return mount_bdev(fs_type, flags, dev_name, data, isofs_fill_super); } @@ -1556,6 +1535,8 @@ static struct file_system_type iso9660_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("iso9660"); +MODULE_ALIAS("iso9660"); static int __init init_iso9660_fs(void) { @@ -1593,5 +1574,3 @@ static void __exit exit_iso9660_fs(void) module_init(init_iso9660_fs) module_exit(exit_iso9660_fs) MODULE_LICENSE("GPL"); -/* Actual filesystem name is iso9660, as requested in filesystems.c */ -MODULE_ALIAS("iso9660"); |