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fs/ntfs3: Factor out ntfs_{create/remove}_procdir()

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Introduce ntfs_create_procdir() and ntfs_remove_procdir() to
create/remove "/proc/fs/ntfs3/.."

Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Ye Bin 2024-10-11 15:40:23 +08:00 committed by Konstantin Komarov
parent 285cec318b
commit e2d74c47a3
No known key found for this signature in database
GPG Key ID: A9B0331F832407B6
1 changed files with 36 additions and 23 deletions
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59
fs/ntfs3/super.c
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@ -555,6 +555,40 @@ static const struct proc_ops ntfs3_label_fops = {
.proc_write = ntfs3_label_write,
};
static void ntfs_create_procdir(struct super_block *sb)
{
struct proc_dir_entry *e;
if (!proc_info_root)
return;
e = proc_mkdir(sb->s_id, proc_info_root);
if (e) {
struct ntfs_sb_info *sbi = sb->s_fs_info;
proc_create_data("volinfo", 0444, e,
&ntfs3_volinfo_fops, sb);
proc_create_data("label", 0644, e,
&ntfs3_label_fops, sb);
sbi->procdir = e;
}
}
static void ntfs_remove_procdir(struct super_block *sb)
{
struct ntfs_sb_info *sbi = sb->s_fs_info;
if (!sbi->procdir)
return;
remove_proc_entry("label", sbi->procdir);
remove_proc_entry("volinfo", sbi->procdir);
remove_proc_entry(sb->s_id, proc_info_root);
sbi->procdir = NULL;
}
#else
static void ntfs_create_procdir(struct super_block *sb) {}
static void ntfs_remove_procdir(struct super_block *sb) {}
#endif
static struct kmem_cache *ntfs_inode_cachep;
@ -644,15 +678,7 @@ static void ntfs_put_super(struct super_block *sb)
{
struct ntfs_sb_info *sbi = sb->s_fs_info;
#ifdef CONFIG_PROC_FS
// Remove /proc/fs/ntfs3/..
if (sbi->procdir) {
remove_proc_entry("label", sbi->procdir);
remove_proc_entry("volinfo", sbi->procdir);
remove_proc_entry(sb->s_id, proc_info_root);
sbi->procdir = NULL;
}
#endif
ntfs_remove_procdir(sb);
/* Mark rw ntfs as clear, if possible. */
ntfs_set_state(sbi, NTFS_DIRTY_CLEAR);
@ -1590,20 +1616,7 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)
kfree(boot2);
}
#ifdef CONFIG_PROC_FS
/* Create /proc/fs/ntfs3/.. */
if (proc_info_root) {
struct proc_dir_entry *e = proc_mkdir(sb->s_id, proc_info_root);
static_assert((S_IRUGO | S_IWUSR) == 0644);
if (e) {
proc_create_data("volinfo", S_IRUGO, e,
&ntfs3_volinfo_fops, sb);
proc_create_data("label", S_IRUGO | S_IWUSR, e,
&ntfs3_label_fops, sb);
sbi->procdir = e;
}
}
#endif
ntfs_create_procdir(sb);
if (is_legacy_ntfs(sb))
sb->s_flags |= SB_RDONLY;