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inode->i_op is never NULL

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We used to have rather schizophrenic set of checks for NULL ->i_op even
though it had been eliminated years ago.  You'd need to go out of your
way to set it to NULL explicitly _and_ a bunch of code would die on
such inodes anyway.  After killing two remaining places that still
did that bogosity, all that crap can go away.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2008-12-04 10:06:33 -05:00
parent 9742df331d
commit acfa4380ef
10 changed files with 28 additions and 35 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
fs/cifs/inode.c
View file

@ -1641,7 +1641,7 @@ do_expand:
i_size_write(inode, offset);
spin_unlock(&inode->i_lock);
out_truncate:
if (inode->i_op && inode->i_op->truncate)
if (inode->i_op->truncate)
inode->i_op->truncate(inode);
return 0;
out_sig:

3
fs/ecryptfs/inode.c
View file

@ -612,8 +612,7 @@ ecryptfs_readlink(struct dentry *dentry, char __user * buf, int bufsiz)
struct ecryptfs_crypt_stat *crypt_stat;
lower_dentry = ecryptfs_dentry_to_lower(dentry);
if (!lower_dentry->d_inode->i_op ||
!lower_dentry->d_inode->i_op->readlink) {
if (!lower_dentry->d_inode->i_op->readlink) {
rc = -EINVAL;
goto out;
}

32
fs/namei.c
View file

@ -257,7 +257,7 @@ int inode_permission(struct inode *inode, int mask)
return -EACCES;
}
if (inode->i_op && inode->i_op->permission)
if (inode->i_op->permission)
retval = inode->i_op->permission(inode, mask);
else
retval = generic_permission(inode, mask, NULL);
@ -432,7 +432,7 @@ static int exec_permission_lite(struct inode *inode)
{
umode_t mode = inode->i_mode;
if (inode->i_op && inode->i_op->permission)
if (inode->i_op->permission)
return -EAGAIN;
if (current_fsuid() == inode->i_uid)
@ -908,9 +908,6 @@ static int __link_path_walk(const char *name, struct nameidata *nd)
inode = next.dentry->d_inode;
if (!inode)
goto out_dput;
err = -ENOTDIR;
if (!inode->i_op)
goto out_dput;
if (inode->i_op->follow_link) {
err = do_follow_link(&next, nd);
@ -920,9 +917,6 @@ static int __link_path_walk(const char *name, struct nameidata *nd)
inode = nd->path.dentry->d_inode;
if (!inode)
break;
err = -ENOTDIR;
if (!inode->i_op)
break;
} else
path_to_nameidata(&next, nd);
err = -ENOTDIR;
@ -961,7 +955,7 @@ last_component:
break;
inode = next.dentry->d_inode;
if ((lookup_flags & LOOKUP_FOLLOW)
&& inode && inode->i_op && inode->i_op->follow_link) {
&& inode && inode->i_op->follow_link) {
err = do_follow_link(&next, nd);
if (err)
goto return_err;
@ -973,7 +967,7 @@ last_component:
break;
if (lookup_flags & LOOKUP_DIRECTORY) {
err = -ENOTDIR;
if (!inode->i_op || !inode->i_op->lookup)
if (!inode->i_op->lookup)
break;
}
goto return_base;
@ -1469,7 +1463,7 @@ int vfs_create(struct inode *dir, struct dentry *dentry, int mode,
if (error)
return error;
if (!dir->i_op || !dir->i_op->create)
if (!dir->i_op->create)
return -EACCES; /* shouldn't it be ENOSYS? */
mode &= S_IALLUGO;
mode |= S_IFREG;
@ -1752,7 +1746,7 @@ do_last:
error = -ENOENT;
if (!path.dentry->d_inode)
goto exit_dput;
if (path.dentry->d_inode->i_op && path.dentry->d_inode->i_op->follow_link)
if (path.dentry->d_inode->i_op->follow_link)
goto do_link;
path_to_nameidata(&path, &nd);
@ -1933,7 +1927,7 @@ int vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
if ((S_ISCHR(mode) || S_ISBLK(mode)) && !capable(CAP_MKNOD))
return -EPERM;
if (!dir->i_op || !dir->i_op->mknod)
if (!dir->i_op->mknod)
return -EPERM;
error = devcgroup_inode_mknod(mode, dev);
@ -2035,7 +2029,7 @@ int vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
if (error)
return error;
if (!dir->i_op || !dir->i_op->mkdir)
if (!dir->i_op->mkdir)
return -EPERM;
mode &= (S_IRWXUGO|S_ISVTX);
@ -2126,7 +2120,7 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry)
if (error)
return error;
if (!dir->i_op || !dir->i_op->rmdir)
if (!dir->i_op->rmdir)
return -EPERM;
DQUOT_INIT(dir);
@ -2213,7 +2207,7 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry)
if (error)
return error;
if (!dir->i_op || !dir->i_op->unlink)
if (!dir->i_op->unlink)
return -EPERM;
DQUOT_INIT(dir);
@ -2320,7 +2314,7 @@ int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname)
if (error)
return error;
if (!dir->i_op || !dir->i_op->symlink)
if (!dir->i_op->symlink)
return -EPERM;
error = security_inode_symlink(dir, dentry, oldname);
@ -2401,7 +2395,7 @@ int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_de
*/
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return -EPERM;
if (!dir->i_op || !dir->i_op->link)
if (!dir->i_op->link)
return -EPERM;
if (S_ISDIR(inode->i_mode))
return -EPERM;
@ -2608,7 +2602,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (error)
return error;
if (!old_dir->i_op || !old_dir->i_op->rename)
if (!old_dir->i_op->rename)
return -EPERM;
DQUOT_INIT(old_dir);

8
fs/nfsd/vfs.c
View file

@ -1211,7 +1211,7 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
dirp = dentry->d_inode;
err = nfserr_notdir;
if(!dirp->i_op || !dirp->i_op->lookup)
if (!dirp->i_op->lookup)
goto out;
/*
* Check whether the response file handle has been verified yet.
@ -1347,7 +1347,7 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
/* Get all the sanity checks out of the way before
* we lock the parent. */
err = nfserr_notdir;
if(!dirp->i_op || !dirp->i_op->lookup)
if (!dirp->i_op->lookup)
goto out;
fh_lock_nested(fhp, I_MUTEX_PARENT);
@ -1482,7 +1482,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp)
inode = dentry->d_inode;
err = nfserr_inval;
if (!inode->i_op || !inode->i_op->readlink)
if (!inode->i_op->readlink)
goto out;
touch_atime(fhp->fh_export->ex_path.mnt, dentry);
@ -2162,7 +2162,7 @@ nfsd_set_posix_acl(struct svc_fh *fhp, int type, struct posix_acl *acl)
size_t size;
int error;
if (!IS_POSIXACL(inode) || !inode->i_op ||
if (!IS_POSIXACL(inode) ||
!inode->i_op->setxattr || !inode->i_op->removexattr)
return -EOPNOTSUPP;
switch(type) {

2
fs/open.c
View file

@ -412,7 +412,7 @@ asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len)
if (((offset + len) > inode->i_sb->s_maxbytes) || ((offset + len) < 0))
goto out_fput;
if (inode->i_op && inode->i_op->fallocate)
if (inode->i_op->fallocate)
ret = inode->i_op->fallocate(inode, mode, offset, len);
else
ret = -EOPNOTSUPP;

2
fs/stat.c
View file

@ -305,7 +305,7 @@ asmlinkage long sys_readlinkat(int dfd, const char __user *pathname,
struct inode *inode = path.dentry->d_inode;
error = -EINVAL;
if (inode->i_op && inode->i_op->readlink) {
if (inode->i_op->readlink) {
error = security_inode_readlink(path.dentry);
if (!error) {
touch_atime(path.mnt, path.dentry);

2
fs/xattr.c
View file

@ -175,7 +175,7 @@ vfs_listxattr(struct dentry *d, char *list, size_t size)
if (error)
return error;
error = -EOPNOTSUPP;
if (d->d_inode->i_op && d->d_inode->i_op->listxattr) {
if (d->d_inode->i_op->listxattr) {
error = d->d_inode->i_op->listxattr(d, list, size);
} else {
error = security_inode_listsecurity(d->d_inode, list, size);

4
mm/memory.c
View file

@ -2266,7 +2266,7 @@ int vmtruncate(struct inode * inode, loff_t offset)
unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
}
if (inode->i_op && inode->i_op->truncate)
if (inode->i_op->truncate)
inode->i_op->truncate(inode);
return 0;
@ -2286,7 +2286,7 @@ int vmtruncate_range(struct inode *inode, loff_t offset, loff_t end)
* a way to truncate a range of blocks (punch a hole) -
* we should return failure right now.
*/
if (!inode->i_op || !inode->i_op->truncate_range)
if (!inode->i_op->truncate_range)
return -ENOSYS;
mutex_lock(&inode->i_mutex);

2
mm/nommu.c
View file

@ -86,7 +86,7 @@ do_expand:
i_size_write(inode, offset);
out_truncate:
if (inode->i_op && inode->i_op->truncate)
if (inode->i_op->truncate)
inode->i_op->truncate(inode);
return 0;
out_sig:

6
security/commoncap.c
View file

@ -238,7 +238,7 @@ int cap_inode_need_killpriv(struct dentry *dentry)
struct inode *inode = dentry->d_inode;
int error;
if (!inode->i_op || !inode->i_op->getxattr)
if (!inode->i_op->getxattr)
return 0;
error = inode->i_op->getxattr(dentry, XATTR_NAME_CAPS, NULL, 0);
@ -259,7 +259,7 @@ int cap_inode_killpriv(struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
if (!inode->i_op || !inode->i_op->removexattr)
if (!inode->i_op->removexattr)
return 0;
return inode->i_op->removexattr(dentry, XATTR_NAME_CAPS);
@ -317,7 +317,7 @@ int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data
memset(cpu_caps, 0, sizeof(struct cpu_vfs_cap_data));
if (!inode || !inode->i_op || !inode->i_op->getxattr)
if (!inode || !inode->i_op->getxattr)
return -ENODATA;
size = inode->i_op->getxattr((struct dentry *)dentry, XATTR_NAME_CAPS, &caps,