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fs/ntfs3: Redesign ntfs_create_inode to return error code instead of inode

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As Al Viro correctly pointed out, there is no need to return
the whole structure to check the error.
https://lore.kernel.org/ntfs3/20240322023515.GK538574@ZenIV/

Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Konstantin Komarov 2024-04-16 09:52:47 +03:00
parent 1997cdc3e7
commit c935c66878
No known key found for this signature in database
GPG key ID: A9B0331F832407B6
3 changed files with 23 additions and 39 deletions
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22
fs/ntfs3/inode.c
View file

@ -1216,11 +1216,10 @@ ntfs_create_reparse_buffer(struct ntfs_sb_info *sbi, const char *symname,
*
* NOTE: if fnd != NULL (ntfs_atomic_open) then @dir is locked
*/
struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry,
const struct cpu_str *uni, umode_t mode,
dev_t dev, const char *symname, u32 size,
struct ntfs_fnd *fnd)
int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, const struct cpu_str *uni,
umode_t mode, dev_t dev, const char *symname, u32 size,
struct ntfs_fnd *fnd)
{
int err;
struct super_block *sb = dir->i_sb;
@ -1245,6 +1244,9 @@ struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
struct REPARSE_DATA_BUFFER *rp = NULL;
bool rp_inserted = false;
/* New file will be resident or non resident. */
const bool new_file_resident = 1;
if (!fnd)
ni_lock_dir(dir_ni);
@ -1484,7 +1486,7 @@ struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
attr->size = cpu_to_le32(SIZEOF_RESIDENT);
attr->name_off = SIZEOF_RESIDENT_LE;
attr->res.data_off = SIZEOF_RESIDENT_LE;
} else if (S_ISREG(mode)) {
} else if (!new_file_resident && S_ISREG(mode)) {
/*
* Regular file. Create empty non resident data attribute.
*/
@ -1721,12 +1723,10 @@ struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
if (!fnd)
ni_unlock(dir_ni);
if (err)
return ERR_PTR(err);
if (!err)
unlock_new_inode(inode);
unlock_new_inode(inode);
return inode;
return err;
}
int ntfs_link_inode(struct inode *inode, struct dentry *dentry)

31
fs/ntfs3/namei.c
View file

@ -107,12 +107,8 @@ static struct dentry *ntfs_lookup(struct inode *dir, struct dentry *dentry,
static int ntfs_create(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode, bool excl)
{
struct inode *inode;
inode = ntfs_create_inode(idmap, dir, dentry, NULL, S_IFREG | mode, 0,
NULL, 0, NULL);
return IS_ERR(inode) ? PTR_ERR(inode) : 0;
return ntfs_create_inode(idmap, dir, dentry, NULL, S_IFREG | mode, 0,
NULL, 0, NULL);
}
/*
@ -123,12 +119,8 @@ static int ntfs_create(struct mnt_idmap *idmap, struct inode *dir,
static int ntfs_mknod(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode, dev_t rdev)
{
struct inode *inode;
inode = ntfs_create_inode(idmap, dir, dentry, NULL, mode, rdev, NULL, 0,
NULL);
return IS_ERR(inode) ? PTR_ERR(inode) : 0;
return ntfs_create_inode(idmap, dir, dentry, NULL, mode, rdev, NULL, 0,
NULL);
}
/*
@ -200,15 +192,12 @@ static int ntfs_symlink(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, const char *symname)
{
u32 size = strlen(symname);
struct inode *inode;
if (unlikely(ntfs3_forced_shutdown(dir->i_sb)))
return -EIO;
inode = ntfs_create_inode(idmap, dir, dentry, NULL, S_IFLNK | 0777, 0,
symname, size, NULL);
return IS_ERR(inode) ? PTR_ERR(inode) : 0;
return ntfs_create_inode(idmap, dir, dentry, NULL, S_IFLNK | 0777, 0,
symname, size, NULL);
}
/*
@ -217,12 +206,8 @@ static int ntfs_symlink(struct mnt_idmap *idmap, struct inode *dir,
static int ntfs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode)
{
struct inode *inode;
inode = ntfs_create_inode(idmap, dir, dentry, NULL, S_IFDIR | mode, 0,
NULL, 0, NULL);
return IS_ERR(inode) ? PTR_ERR(inode) : 0;
return ntfs_create_inode(idmap, dir, dentry, NULL, S_IFDIR | mode, 0,
NULL, 0, NULL);
}
/*

9
fs/ntfs3/ntfs_fs.h
View file

@ -714,11 +714,10 @@ int ntfs_sync_inode(struct inode *inode);
int ntfs_flush_inodes(struct super_block *sb, struct inode *i1,
struct inode *i2);
int inode_write_data(struct inode *inode, const void *data, size_t bytes);
struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry,
const struct cpu_str *uni, umode_t mode,
dev_t dev, const char *symname, u32 size,
struct ntfs_fnd *fnd);
int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, const struct cpu_str *uni,
umode_t mode, dev_t dev, const char *symname, u32 size,
struct ntfs_fnd *fnd);
int ntfs_link_inode(struct inode *inode, struct dentry *dentry);
int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry);
void ntfs_evict_inode(struct inode *inode);