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mount options: fix hpfs

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Add a .show_options super operation to hpfs.

Use generic_show_options() and save the complete option string in
hpfs_fill_super() and hpfs_remount_fs().

Also add a small fix: hpfs_remount_fs() should return -EINVAL on
error, instead of 1, which is not an error value.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miklos Szeredi 2008-02-08 04:21:44 -08:00 committed by Linus Torvalds
parent dd2cc4dff3
commit 6d9c1fd425
1 changed files with 14 additions and 3 deletions
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17
fs/hpfs/super.c
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@ -386,6 +386,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
int lowercase, conv, eas, chk, errs, chkdsk, timeshift;
int o;
struct hpfs_sb_info *sbi = hpfs_sb(s);
char *new_opts = kstrdup(data, GFP_KERNEL);
*flags |= MS_NOATIME;
@ -398,15 +399,15 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &conv,
&eas, &chk, &errs, &chkdsk, &timeshift))) {
printk("HPFS: bad mount options.\n");
return 1;
goto out_err;
}
if (o == 2) {
hpfs_help();
return 1;
goto out_err;
}
if (timeshift != sbi->sb_timeshift) {
printk("HPFS: timeshift can't be changed using remount.\n");
return 1;
goto out_err;
}
unmark_dirty(s);
@ -419,7 +420,14 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
if (!(*flags & MS_RDONLY)) mark_dirty(s);
kfree(s->s_options);
s->s_options = new_opts;
return 0;
out_err:
kfree(new_opts);
return -EINVAL;
}
/* Super operations */
@ -432,6 +440,7 @@ static const struct super_operations hpfs_sops =
.put_super = hpfs_put_super,
.statfs = hpfs_statfs,
.remount_fs = hpfs_remount_fs,
.show_options = generic_show_options,
};
static int hpfs_fill_super(struct super_block *s, void *options, int silent)
@ -454,6 +463,8 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
int o;
save_mount_options(s, options);
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;