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minix: make minix_new_inode() return error as ERR_PTR(-E...)

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adjust the callers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2022-12-14 12:57:27 -05:00
parent b7bfaa761d
commit 4a29a1262a
3 changed files with 36 additions and 50 deletions
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16
fs/minix/bitmap.c
View File

@ -210,7 +210,7 @@ void minix_free_inode(struct inode * inode)
mark_buffer_dirty(bh);
}
struct inode *minix_new_inode(const struct inode *dir, umode_t mode, int *error)
struct inode *minix_new_inode(const struct inode *dir, umode_t mode)
{
struct super_block *sb = dir->i_sb;
struct minix_sb_info *sbi = minix_sb(sb);
@ -220,13 +220,10 @@ struct inode *minix_new_inode(const struct inode *dir, umode_t mode, int *error)
unsigned long j;
int i;
if (!inode) {
*error = -ENOMEM;
return NULL;
}
if (!inode)
return ERR_PTR(-ENOMEM);
j = bits_per_zone;
bh = NULL;
*error = -ENOSPC;
spin_lock(&bitmap_lock);
for (i = 0; i < sbi->s_imap_blocks; i++) {
bh = sbi->s_imap[i];
@ -237,20 +234,20 @@ struct inode *minix_new_inode(const struct inode *dir, umode_t mode, int *error)
if (!bh || j >= bits_per_zone) {
spin_unlock(&bitmap_lock);
iput(inode);
return NULL;
return ERR_PTR(-ENOSPC);
}
if (minix_test_and_set_bit(j, bh->b_data)) { /* shouldn't happen */
spin_unlock(&bitmap_lock);
printk("minix_new_inode: bit already set\n");
iput(inode);
return NULL;
return ERR_PTR(-ENOSPC);
}
spin_unlock(&bitmap_lock);
mark_buffer_dirty(bh);
j += i * bits_per_zone;
if (!j || j > sbi->s_ninodes) {
iput(inode);
return NULL;
return ERR_PTR(-ENOSPC);
}
inode_init_owner(&init_user_ns, inode, dir, mode);
inode->i_ino = j;
@ -260,7 +257,6 @@ struct inode *minix_new_inode(const struct inode *dir, umode_t mode, int *error)
insert_inode_hash(inode);
mark_inode_dirty(inode);
*error = 0;
return inode;
}

2
fs/minix/minix.h
View File

@ -45,7 +45,7 @@ struct minix_sb_info {
extern struct inode *minix_iget(struct super_block *, unsigned long);
extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **);
extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **);
extern struct inode * minix_new_inode(const struct inode *, umode_t, int *);
extern struct inode * minix_new_inode(const struct inode *, umode_t);
extern void minix_free_inode(struct inode * inode);
extern unsigned long minix_count_free_inodes(struct super_block *sb);
extern int minix_new_block(struct inode * inode);

68
fs/minix/namei.c
View File

@ -36,33 +36,31 @@ static struct dentry *minix_lookup(struct inode * dir, struct dentry *dentry, un
static int minix_mknod(struct user_namespace *mnt_userns, struct inode *dir,
struct dentry *dentry, umode_t mode, dev_t rdev)
{
int error;
struct inode *inode;
if (!old_valid_dev(rdev))
return -EINVAL;
inode = minix_new_inode(dir, mode, &error);
inode = minix_new_inode(dir, mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
if (inode) {
minix_set_inode(inode, rdev);
mark_inode_dirty(inode);
error = add_nondir(dentry, inode);
}
return error;
minix_set_inode(inode, rdev);
mark_inode_dirty(inode);
return add_nondir(dentry, inode);
}
static int minix_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
struct file *file, umode_t mode)
{
int error;
struct inode *inode = minix_new_inode(dir, mode, &error);
if (inode) {
minix_set_inode(inode, 0);
mark_inode_dirty(inode);
d_tmpfile(file, inode);
}
return finish_open_simple(file, error);
struct inode *inode = minix_new_inode(dir, mode);
if (IS_ERR(inode))
return finish_open_simple(file, PTR_ERR(inode));
minix_set_inode(inode, 0);
mark_inode_dirty(inode);
d_tmpfile(file, inode);
return finish_open_simple(file, 0);
}
static int minix_create(struct user_namespace *mnt_userns, struct inode *dir,
@ -74,30 +72,25 @@ static int minix_create(struct user_namespace *mnt_userns, struct inode *dir,
static int minix_symlink(struct user_namespace *mnt_userns, struct inode *dir,
struct dentry *dentry, const char *symname)
{
int err = -ENAMETOOLONG;
int i = strlen(symname)+1;
struct inode * inode;
int err;
if (i > dir->i_sb->s_blocksize)
goto out;
return -ENAMETOOLONG;
inode = minix_new_inode(dir, S_IFLNK | 0777, &err);
if (!inode)
goto out;
inode = minix_new_inode(dir, S_IFLNK | 0777);
if (IS_ERR(inode))
return PTR_ERR(inode);
minix_set_inode(inode, 0);
err = page_symlink(inode, symname, i);
if (err)
goto out_fail;
err = add_nondir(dentry, inode);
out:
return err;
out_fail:
inode_dec_link_count(inode);
iput(inode);
goto out;
if (unlikely(err)) {
inode_dec_link_count(inode);
iput(inode);
return err;
}
return add_nondir(dentry, inode);
}
static int minix_link(struct dentry * old_dentry, struct inode * dir,
@ -117,14 +110,12 @@ static int minix_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
struct inode * inode;
int err;
inode = minix_new_inode(dir, S_IFDIR | mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
inode_inc_link_count(dir);
inode = minix_new_inode(dir, S_IFDIR | mode, &err);
if (!inode)
goto out_dir;
minix_set_inode(inode, 0);
inode_inc_link_count(inode);
err = minix_make_empty(inode, dir);
@ -143,7 +134,6 @@ static int minix_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
inode_dec_link_count(inode);
inode_dec_link_count(inode);
iput(inode);
out_dir:
inode_dec_link_count(dir);
goto out;
}