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authorOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>2008-11-06 23:53:54 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-07 02:41:21 +0300
commit9c0aa1b87bf541affef519eb4879ce7c5a5941ae (patch)
tree3bd583d8331c630b59fc01b68ab9cb34bb953d6e /fs/fat/file.c
parent45cfbe354785a5bc9a38354754d6f7322f598001 (diff)
downloadlinux-9c0aa1b87bf541affef519eb4879ce7c5a5941ae.tar.xz
fat: Cleanup FAT attribute stuff
This adds three helpers: fat_make_attrs() - makes FAT attributes from inode. fat_make_mode() - makes mode_t from FAT attributes. fat_save_attrs() - saves FAT attributes to inode. Then this replaces: MSDOS_MKMODE() by fat_make_mode(), fat_attr() by fat_make_attrs(), ->i_attrs = attr & ATTR_UNUSED by fat_save_attrs(). And for root inode, those is used with ATTR_DIR instead of bogus ATTR_NONE. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/fat/file.c')
-rw-r--r--fs/fat/file.c32
1 files changed, 12 insertions, 20 deletions
diff --git a/fs/fat/file.c b/fs/fat/file.c
index b21973f266a1..f5a7e907a8fa 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -27,13 +27,7 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
switch (cmd) {
case FAT_IOCTL_GET_ATTRIBUTES:
{
- u32 attr;
-
- if (inode->i_ino == MSDOS_ROOT_INO)
- attr = ATTR_DIR;
- else
- attr = fat_attr(inode);
-
+ u32 attr = fat_make_attrs(inode);
return put_user(attr, user_attr);
}
case FAT_IOCTL_SET_ATTRIBUTES:
@@ -62,20 +56,16 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
/* Merge in ATTR_VOLUME and ATTR_DIR */
attr |= (MSDOS_I(inode)->i_attrs & ATTR_VOLUME) |
(is_dir ? ATTR_DIR : 0);
- oldattr = fat_attr(inode);
+ oldattr = fat_make_attrs(inode);
/* 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)
- | S_IFDIR;
- } else {
- ia.ia_mode = MSDOS_MKMODE(attr,
- (S_IRUGO | S_IWUGO | (inode->i_mode & S_IXUGO))
- & ~sbi->options.fs_fmask)
- | S_IFREG;
+ if (is_dir)
+ ia.ia_mode = fat_make_mode(sbi, attr, S_IRWXUGO);
+ else {
+ ia.ia_mode = fat_make_mode(sbi, attr,
+ S_IRUGO | S_IWUGO | (inode->i_mode & S_IXUGO));
}
/* The root directory has no attributes */
@@ -115,7 +105,7 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
inode->i_flags &= S_IMMUTABLE;
}
- MSDOS_I(inode)->i_attrs = attr & ATTR_UNUSED;
+ fat_save_attrs(inode, attr);
mark_inode_dirty(inode);
up:
mnt_drop_write(filp->f_path.mnt);
@@ -274,7 +264,7 @@ static int fat_sanitize_mode(const struct msdos_sb_info *sbi,
/*
* Note, the basic check is already done by a caller of
- * (attr->ia_mode & ~MSDOS_VALID_MODE)
+ * (attr->ia_mode & ~FAT_VALID_MODE)
*/
if (S_ISREG(inode->i_mode))
@@ -314,6 +304,8 @@ static int fat_allow_set_time(struct msdos_sb_info *sbi, struct inode *inode)
}
#define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
+/* valid file mode bits */
+#define FAT_VALID_MODE (S_IFREG | S_IFDIR | S_IRWXUGO)
int fat_setattr(struct dentry *dentry, struct iattr *attr)
{
@@ -356,7 +348,7 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
((attr->ia_valid & ATTR_GID) &&
(attr->ia_gid != sbi->options.fs_gid)) ||
((attr->ia_valid & ATTR_MODE) &&
- (attr->ia_mode & ~MSDOS_VALID_MODE)))
+ (attr->ia_mode & ~FAT_VALID_MODE)))
error = -EPERM;
if (error) {