diff options
Diffstat (limited to 'fs/fat/file.c')
| -rw-r--r-- | fs/fat/file.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/fs/fat/file.c b/fs/fat/file.c index 771326b8047..ddde37025ca 100644 --- a/fs/fat/file.c +++ b/fs/fat/file.c @@ -11,11 +11,12 @@ #include <linux/mount.h> #include <linux/time.h> #include <linux/msdos_fs.h> -#include <linux/smp_lock.h> #include <linux/buffer_head.h> #include <linux/writeback.h> #include <linux/backing-dev.h> #include <linux/blkdev.h> +#include <linux/fsnotify.h> +#include <linux/security.h> int fat_generic_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) @@ -65,6 +66,7 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp, /* Equivalent to a chmod() */ ia.ia_valid = ATTR_MODE | ATTR_CTIME; + ia.ia_ctime = current_fs_time(inode->i_sb); if (is_dir) { ia.ia_mode = MSDOS_MKMODE(attr, S_IRWXUGO & ~sbi->options.fs_dmask) @@ -91,11 +93,21 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp, } } + /* + * The security check is questionable... We single + * out the RO attribute for checking by the security + * module, just because it maps to a file mode. + */ + err = security_inode_setattr(filp->f_path.dentry, &ia); + if (err) + goto up; + /* This MUST be done before doing anything irreversible... */ - err = notify_change(filp->f_path.dentry, &ia); + err = fat_setattr(filp->f_path.dentry, &ia); if (err) goto up; + fsnotify_change(filp->f_path.dentry, ia.ia_valid); if (sbi->options.sys_immutable) { if (attr & ATTR_SYS) inode->i_flags |= S_IMMUTABLE; @@ -242,9 +254,7 @@ void fat_truncate(struct inode *inode) nr_clusters = (inode->i_size + (cluster_size - 1)) >> sbi->cluster_bits; - lock_kernel(); fat_free(inode, nr_clusters); - unlock_kernel(); fat_flush_inodes(inode->i_sb, inode, NULL); } @@ -303,6 +313,8 @@ static int fat_allow_set_time(struct msdos_sb_info *sbi, struct inode *inode) return 0; } +#define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET) + int fat_setattr(struct dentry *dentry, struct iattr *attr) { struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb); @@ -310,8 +322,6 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr) int error = 0; unsigned int ia_valid; - lock_kernel(); - /* * Expand the file. Since inode_setattr() updates ->i_size * before calling the ->truncate(), but FAT needs to fill the @@ -328,9 +338,9 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr) /* Check for setting the inode time. */ ia_valid = attr->ia_valid; - if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) { + if (ia_valid & TIMES_SET_FLAGS) { if (fat_allow_set_time(sbi, inode)) - attr->ia_valid &= ~(ATTR_MTIME_SET | ATTR_ATIME_SET); + attr->ia_valid &= ~TIMES_SET_FLAGS; } error = inode_change_ok(inode, attr); @@ -366,7 +376,6 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr) error = inode_setattr(inode, attr); out: - unlock_kernel(); return error; } EXPORT_SYMBOL_GPL(fat_setattr); |