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-rw-r--r--fs/fat/file.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/fs/fat/file.c b/fs/fat/file.c
index c672df4036e..ddde37025ca 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -15,6 +15,8 @@
#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)
@@ -64,6 +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)
@@ -90,11 +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;
@@ -300,6 +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);
@@ -323,9 +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);