kill check_acl callback of generic_permission()

its value depends only on inode and does not change; we might as
well store it in ->i_op->check_acl and be done with that.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-06-20 11:31:30 -04:00
Родитель 07b8ce1ee8
Коммит 178ea73521
20 изменённых файлов: 47 добавлений и 37 удалений

Просмотреть файл

@ -350,7 +350,7 @@ int afs_permission(struct inode *inode, int mask, unsigned int flags)
}
key_put(key);
ret = generic_permission(inode, mask, flags, NULL);
ret = generic_permission(inode, mask, flags);
_leave(" = %d", ret);
return ret;

Просмотреть файл

@ -7339,7 +7339,7 @@ static int btrfs_permission(struct inode *inode, int mask, unsigned int flags)
return -EROFS;
if ((BTRFS_I(inode)->flags & BTRFS_INODE_READONLY) && (mask & MAY_WRITE))
return -EACCES;
return generic_permission(inode, mask, flags, btrfs_check_acl);
return generic_permission(inode, mask, flags);
}
static const struct inode_operations btrfs_dir_inode_operations = {
@ -7359,10 +7359,12 @@ static const struct inode_operations btrfs_dir_inode_operations = {
.listxattr = btrfs_listxattr,
.removexattr = btrfs_removexattr,
.permission = btrfs_permission,
.check_acl = btrfs_check_acl,
};
static const struct inode_operations btrfs_dir_ro_inode_operations = {
.lookup = btrfs_lookup,
.permission = btrfs_permission,
.check_acl = btrfs_check_acl,
};
static const struct file_operations btrfs_dir_file_operations = {
@ -7431,6 +7433,7 @@ static const struct inode_operations btrfs_file_inode_operations = {
.removexattr = btrfs_removexattr,
.permission = btrfs_permission,
.fiemap = btrfs_fiemap,
.check_acl = btrfs_check_acl,
};
static const struct inode_operations btrfs_special_inode_operations = {
.getattr = btrfs_getattr,
@ -7440,6 +7443,7 @@ static const struct inode_operations btrfs_special_inode_operations = {
.getxattr = btrfs_getxattr,
.listxattr = btrfs_listxattr,
.removexattr = btrfs_removexattr,
.check_acl = btrfs_check_acl,
};
static const struct inode_operations btrfs_symlink_inode_operations = {
.readlink = generic_readlink,
@ -7451,6 +7455,7 @@ static const struct inode_operations btrfs_symlink_inode_operations = {
.getxattr = btrfs_getxattr,
.listxattr = btrfs_listxattr,
.removexattr = btrfs_removexattr,
.check_acl = btrfs_check_acl,
};
const struct dentry_operations btrfs_dentry_operations = {

Просмотреть файл

@ -1805,7 +1805,7 @@ int ceph_permission(struct inode *inode, int mask, unsigned int flags)
err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED);
if (!err)
err = generic_permission(inode, mask, flags, NULL);
err = generic_permission(inode, mask, flags);
return err;
}

Просмотреть файл

@ -239,7 +239,7 @@ static int cifs_permission(struct inode *inode, int mask, unsigned int flags)
on the client (above and beyond ACL on servers) for
servers which do not support setting and viewing mode bits,
so allowing client to check permissions is useful */
return generic_permission(inode, mask, flags, NULL);
return generic_permission(inode, mask, flags);
}
static struct kmem_cache *cifs_inode_cachep;

Просмотреть файл

@ -1018,7 +1018,7 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
}
if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
err = generic_permission(inode, mask, flags, NULL);
err = generic_permission(inode, mask, flags);
/* If permission is denied, try to refresh file
attributes. This is also needed, because the root
@ -1027,7 +1027,7 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
err = fuse_perm_getattr(inode, flags);
if (!err)
err = generic_permission(inode, mask,
flags, NULL);
flags);
}
/* Note: the opposite of the above test does not

Просмотреть файл

@ -1564,7 +1564,7 @@ int gfs2_permission(struct inode *inode, int mask, unsigned int flags)
if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
error = -EACCES;
else
error = generic_permission(inode, mask, flags, gfs2_check_acl);
error = generic_permission(inode, mask, flags);
if (unlock)
gfs2_glock_dq_uninit(&i_gh);
@ -1854,6 +1854,7 @@ const struct inode_operations gfs2_file_iops = {
.listxattr = gfs2_listxattr,
.removexattr = gfs2_removexattr,
.fiemap = gfs2_fiemap,
.check_acl = gfs2_check_acl,
};
const struct inode_operations gfs2_dir_iops = {
@ -1874,6 +1875,7 @@ const struct inode_operations gfs2_dir_iops = {
.listxattr = gfs2_listxattr,
.removexattr = gfs2_removexattr,
.fiemap = gfs2_fiemap,
.check_acl = gfs2_check_acl,
};
const struct inode_operations gfs2_symlink_iops = {
@ -1888,5 +1890,6 @@ const struct inode_operations gfs2_symlink_iops = {
.listxattr = gfs2_listxattr,
.removexattr = gfs2_removexattr,
.fiemap = gfs2_fiemap,
.check_acl = gfs2_check_acl,
};

Просмотреть файл

@ -770,7 +770,7 @@ int hostfs_permission(struct inode *ino, int desired, unsigned int flags)
err = access_file(name, r, w, x);
__putname(name);
if (!err)
err = generic_permission(ino, desired, flags, NULL);
err = generic_permission(ino, desired, flags);
return err;
}

Просмотреть файл

@ -398,7 +398,7 @@ again:
hpfs_unlock(dir->i_sb);
return -ENOSPC;
}
if (generic_permission(inode, MAY_WRITE, 0, NULL) ||
if (generic_permission(inode, MAY_WRITE, 0) ||
!S_ISREG(inode->i_mode) ||
get_write_access(inode)) {
d_rehash(dentry);

Просмотреть файл

@ -176,9 +176,9 @@ EXPORT_SYMBOL(putname);
/*
* This does basic POSIX ACL permission checking
*/
static int acl_permission_check(struct inode *inode, int mask, unsigned int flags,
int (*check_acl)(struct inode *inode, int mask, unsigned int flags))
static int acl_permission_check(struct inode *inode, int mask, unsigned int flags)
{
int (*check_acl)(struct inode *inode, int mask, unsigned int flags);
unsigned int mode = inode->i_mode;
mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
@ -189,6 +189,7 @@ static int acl_permission_check(struct inode *inode, int mask, unsigned int flag
if (current_fsuid() == inode->i_uid)
mode >>= 6;
else {
check_acl = inode->i_op->check_acl;
if (IS_POSIXACL(inode) && (mode & S_IRWXG) && check_acl) {
int error = check_acl(inode, mask, flags);
if (error != -EAGAIN)
@ -212,7 +213,6 @@ other_perms:
* generic_permission - check for access rights on a Posix-like filesystem
* @inode: inode to check access rights for
* @mask: right to check for (%MAY_READ, %MAY_WRITE, %MAY_EXEC)
* @check_acl: optional callback to check for Posix ACLs
* @flags: IPERM_FLAG_ flags.
*
* Used to check for read/write/execute permissions on a file.
@ -224,15 +224,14 @@ other_perms:
* request cannot be satisfied (eg. requires blocking or too much complexity).
* It would then be called again in ref-walk mode.
*/
int generic_permission(struct inode *inode, int mask, unsigned int flags,
int (*check_acl)(struct inode *inode, int mask, unsigned int flags))
int generic_permission(struct inode *inode, int mask, unsigned int flags)
{
int ret;
/*
* Do the basic POSIX ACL permission checks.
*/
ret = acl_permission_check(inode, mask, flags, check_acl);
ret = acl_permission_check(inode, mask, flags);
if (ret != -EACCES)
return ret;
@ -290,8 +289,7 @@ int inode_permission(struct inode *inode, int mask)
if (inode->i_op->permission)
retval = inode->i_op->permission(inode, mask, 0);
else
retval = generic_permission(inode, mask, 0,
inode->i_op->check_acl);
retval = generic_permission(inode, mask, 0);
if (retval)
return retval;
@ -326,8 +324,7 @@ static inline int exec_permission(struct inode *inode, unsigned int flags)
if (likely(!ret))
goto ok;
} else {
ret = acl_permission_check(inode, MAY_EXEC, flags,
inode->i_op->check_acl);
ret = acl_permission_check(inode, MAY_EXEC, flags);
if (likely(!ret))
goto ok;
if (ret != -EACCES)

Просмотреть файл

@ -2328,7 +2328,7 @@ out:
out_notsup:
res = nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (res == 0)
res = generic_permission(inode, mask, flags, NULL);
res = generic_permission(inode, mask, flags);
goto out;
}

Просмотреть файл

@ -806,7 +806,7 @@ int nilfs_permission(struct inode *inode, int mask, unsigned int flags)
root->cno != NILFS_CPTREE_CURRENT_CNO)
return -EROFS; /* snapshot is not writable */
return generic_permission(inode, mask, flags, NULL);
return generic_permission(inode, mask, flags);
}
int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh)

Просмотреть файл

@ -1293,7 +1293,7 @@ int ocfs2_permission(struct inode *inode, int mask, unsigned int flags)
goto out;
}
ret = generic_permission(inode, mask, flags, ocfs2_check_acl);
ret = generic_permission(inode, mask, flags);
ocfs2_inode_unlock(inode, 0);
out:
@ -2593,12 +2593,14 @@ const struct inode_operations ocfs2_file_iops = {
.listxattr = ocfs2_listxattr,
.removexattr = generic_removexattr,
.fiemap = ocfs2_fiemap,
.check_acl = ocfs2_check_acl,
};
const struct inode_operations ocfs2_special_file_iops = {
.setattr = ocfs2_setattr,
.getattr = ocfs2_getattr,
.permission = ocfs2_permission,
.check_acl = ocfs2_check_acl,
};
/*

Просмотреть файл

@ -2498,4 +2498,5 @@ const struct inode_operations ocfs2_dir_iops = {
.listxattr = ocfs2_listxattr,
.removexattr = generic_removexattr,
.fiemap = ocfs2_fiemap,
.check_acl = ocfs2_check_acl,
};

Просмотреть файл

@ -2169,7 +2169,7 @@ static const struct file_operations proc_fd_operations = {
*/
static int proc_fd_permission(struct inode *inode, int mask, unsigned int flags)
{
int rv = generic_permission(inode, mask, flags, NULL);
int rv = generic_permission(inode, mask, flags);
if (rv == 0)
return 0;
if (task_pid(current) == proc_pid(inode))

Просмотреть файл

@ -312,4 +312,5 @@ const struct inode_operations reiserfs_file_inode_operations = {
.listxattr = reiserfs_listxattr,
.removexattr = reiserfs_removexattr,
.permission = reiserfs_permission,
.check_acl = reiserfs_check_acl,
};

Просмотреть файл

@ -1529,6 +1529,7 @@ const struct inode_operations reiserfs_dir_inode_operations = {
.listxattr = reiserfs_listxattr,
.removexattr = reiserfs_removexattr,
.permission = reiserfs_permission,
.check_acl = reiserfs_check_acl,
};
/*
@ -1545,6 +1546,7 @@ const struct inode_operations reiserfs_symlink_inode_operations = {
.listxattr = reiserfs_listxattr,
.removexattr = reiserfs_removexattr,
.permission = reiserfs_permission,
.check_acl = reiserfs_check_acl,
};
@ -1558,5 +1560,5 @@ const struct inode_operations reiserfs_special_inode_operations = {
.listxattr = reiserfs_listxattr,
.removexattr = reiserfs_removexattr,
.permission = reiserfs_permission,
.check_acl = reiserfs_check_acl,
};

Просмотреть файл

@ -868,11 +868,17 @@ out:
return err;
}
static int reiserfs_check_acl(struct inode *inode, int mask, unsigned int flags)
int reiserfs_check_acl(struct inode *inode, int mask, unsigned int flags)
{
struct posix_acl *acl;
int error = -EAGAIN; /* do regular unix permission checks by default */
/*
* Stat data v1 doesn't support ACLs.
*/
if (get_inode_sd_version(inode) == STAT_DATA_V1)
return -EAGAIN;
if (flags & IPERM_FLAG_RCU)
return -ECHILD;
@ -961,15 +967,7 @@ int reiserfs_permission(struct inode *inode, int mask, unsigned int flags)
if (IS_PRIVATE(inode))
return 0;
#ifdef CONFIG_REISERFS_FS_XATTR
/*
* Stat data v1 doesn't support ACLs.
*/
if (get_inode_sd_version(inode) != STAT_DATA_V1)
return generic_permission(inode, mask, flags,
reiserfs_check_acl);
#endif
return generic_permission(inode, mask, flags, NULL);
return generic_permission(inode, mask, flags);
}
static int xattr_hide_revalidate(struct dentry *dentry, struct nameidata *nd)

Просмотреть файл

@ -362,5 +362,5 @@ int sysfs_permission(struct inode *inode, int mask, unsigned int flags)
sysfs_refresh_inode(sd, inode);
mutex_unlock(&sysfs_mutex);
return generic_permission(inode, mask, flags, NULL);
return generic_permission(inode, mask, flags);
}

Просмотреть файл

@ -2187,8 +2187,7 @@ extern sector_t bmap(struct inode *, sector_t);
#endif
extern int notify_change(struct dentry *, struct iattr *);
extern int inode_permission(struct inode *, int);
extern int generic_permission(struct inode *, int, unsigned int,
int (*check_acl)(struct inode *, int, unsigned int));
extern int generic_permission(struct inode *, int, unsigned int);
static inline bool execute_ok(struct inode *inode)
{

Просмотреть файл

@ -45,6 +45,7 @@ int reiserfs_permission(struct inode *inode, int mask, unsigned int flags);
#ifdef CONFIG_REISERFS_FS_XATTR
#define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir)
int reiserfs_check_acl(struct inode *inode, int mask, unsigned int flags);
ssize_t reiserfs_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size);
int reiserfs_setxattr(struct dentry *dentry, const char *name,
@ -122,6 +123,7 @@ static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
#define reiserfs_setxattr NULL
#define reiserfs_listxattr NULL
#define reiserfs_removexattr NULL
#define reiserfs_check_acl NULL
static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
{