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kill boilerplates around posix_acl_create_masq()

Browse source 
new helper: posix_acl_create(&acl, gfp, mode_p).  Replaces acl with
modified clone, on failure releases acl and replaces with NULL.
Returns 0 or -ve on error.  All callers of posix_acl_create_masq()
switched.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-07-23 03:10:32 -04:00
parent 95203befa8
commit 826cae2f2b
16 changed files with 114 additions and 202 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
fs/9p/acl.c
View file

@ -206,30 +206,18 @@ int v9fs_acl_mode(struct inode *dir, mode_t *modep,
mode &= ~current_umask();
}
if (acl) {
struct posix_acl *clone;
if (S_ISDIR(mode))
*dpacl = posix_acl_dup(acl);
clone = posix_acl_clone(acl, GFP_NOFS);
posix_acl_release(acl);
if (!clone)
return -ENOMEM;
retval = posix_acl_create_masq(clone, &mode);
if (retval < 0) {
posix_acl_release(clone);
goto cleanup;
}
retval = posix_acl_create(&acl, GFP_NOFS, &mode);
if (retval < 0)
return retval;
if (retval > 0)
*pacl = clone;
*pacl = acl;
else
posix_acl_release(clone);
posix_acl_release(acl);
}
*modep = mode;
return 0;
cleanup:
return retval;
}
static int v9fs_remote_get_acl(struct dentry *dentry, const char *name,

24
fs/btrfs/acl.c
View file

@ -238,8 +238,7 @@ int btrfs_init_acl(struct btrfs_trans_handle *trans,
}
if (IS_POSIXACL(dir) && acl) {
struct posix_acl *clone;
mode_t mode;
mode_t mode = inode->i_mode;
if (S_ISDIR(inode->i_mode)) {
ret = btrfs_set_acl(trans, inode, acl,
@ -247,22 +246,15 @@ int btrfs_init_acl(struct btrfs_trans_handle *trans,
if (ret)
goto failed;
}
clone = posix_acl_clone(acl, GFP_NOFS);
ret = -ENOMEM;
if (!clone)
goto failed;
ret = posix_acl_create(&acl, GFP_NOFS, &mode);
if (ret < 0)
return ret;
mode = inode->i_mode;
ret = posix_acl_create_masq(clone, &mode);
if (ret >= 0) {
inode->i_mode = mode;
if (ret > 0) {
/* we need an acl */
ret = btrfs_set_acl(trans, inode, clone,
ACL_TYPE_ACCESS);
}
inode->i_mode = mode;
if (ret > 0) {
/* we need an acl */
ret = btrfs_set_acl(trans, inode, acl, ACL_TYPE_ACCESS);
}
posix_acl_release(clone);
}
failed:
posix_acl_release(acl);

25
fs/ext2/acl.c
View file

@ -270,29 +270,20 @@ ext2_init_acl(struct inode *inode, struct inode *dir)
inode->i_mode &= ~current_umask();
}
if (test_opt(inode->i_sb, POSIX_ACL) && acl) {
struct posix_acl *clone;
mode_t mode;
mode_t mode = inode->i_mode;
if (S_ISDIR(inode->i_mode)) {
error = ext2_set_acl(inode, ACL_TYPE_DEFAULT, acl);
if (error)
goto cleanup;
}
clone = posix_acl_clone(acl, GFP_KERNEL);
error = -ENOMEM;
if (!clone)
goto cleanup;
mode = inode->i_mode;
error = posix_acl_create_masq(clone, &mode);
if (error >= 0) {
inode->i_mode = mode;
if (error > 0) {
/* This is an extended ACL */
error = ext2_set_acl(inode,
ACL_TYPE_ACCESS, clone);
}
error = posix_acl_create(&acl, GFP_KERNEL, &mode);
if (error < 0)
return error;
inode->i_mode = mode;
if (error > 0) {
/* This is an extended ACL */
error = ext2_set_acl(inode, ACL_TYPE_ACCESS, acl);
}
posix_acl_release(clone);
}
cleanup:
posix_acl_release(acl);

24
fs/ext3/acl.c
View file

@ -278,8 +278,7 @@ ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
inode->i_mode &= ~current_umask();
}
if (test_opt(inode->i_sb, POSIX_ACL) && acl) {
struct posix_acl *clone;
mode_t mode;
mode_t mode = inode->i_mode;
if (S_ISDIR(inode->i_mode)) {
error = ext3_set_acl(handle, inode,
@ -287,22 +286,15 @@ ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
if (error)
goto cleanup;
}
clone = posix_acl_clone(acl, GFP_NOFS);
error = -ENOMEM;
if (!clone)
goto cleanup;
error = posix_acl_create(&acl, GFP_NOFS, &mode);
if (error < 0)
return error;
mode = inode->i_mode;
error = posix_acl_create_masq(clone, &mode);
if (error >= 0) {
inode->i_mode = mode;
if (error > 0) {
/* This is an extended ACL */
error = ext3_set_acl(handle, inode,
ACL_TYPE_ACCESS, clone);
}
inode->i_mode = mode;
if (error > 0) {
/* This is an extended ACL */
error = ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
}
posix_acl_release(clone);
}
cleanup:
posix_acl_release(acl);

24
fs/ext4/acl.c
View file

@ -276,8 +276,7 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
inode->i_mode &= ~current_umask();
}
if (test_opt(inode->i_sb, POSIX_ACL) && acl) {
struct posix_acl *clone;
mode_t mode;
mode_t mode = inode->i_mode;
if (S_ISDIR(inode->i_mode)) {
error = ext4_set_acl(handle, inode,
@ -285,22 +284,15 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
if (error)
goto cleanup;
}
clone = posix_acl_clone(acl, GFP_NOFS);
error = -ENOMEM;
if (!clone)
goto cleanup;
error = posix_acl_create(&acl, GFP_NOFS, &mode);
if (error < 0)
return error;
mode = inode->i_mode;
error = posix_acl_create_masq(clone, &mode);
if (error >= 0) {
inode->i_mode = mode;
if (error > 0) {
/* This is an extended ACL */
error = ext4_set_acl(handle, inode,
ACL_TYPE_ACCESS, clone);
}
inode->i_mode = mode;
if (error > 0) {
/* This is an extended ACL */
error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
}
posix_acl_release(clone);
}
cleanup:
posix_acl_release(acl);

20
fs/generic_acl.c
View file

@ -132,25 +132,17 @@ generic_acl_init(struct inode *inode, struct inode *dir)
if (!S_ISLNK(inode->i_mode))
acl = get_cached_acl(dir, ACL_TYPE_DEFAULT);
if (acl) {
struct posix_acl *clone;
if (S_ISDIR(inode->i_mode))
set_cached_acl(inode, ACL_TYPE_DEFAULT, acl);
clone = posix_acl_clone(acl, GFP_KERNEL);
error = -ENOMEM;
if (!clone)
goto cleanup;
error = posix_acl_create_masq(clone, &mode);
if (error >= 0) {
inode->i_mode = mode;
if (error > 0)
set_cached_acl(inode, ACL_TYPE_ACCESS, clone);
}
posix_acl_release(clone);
error = posix_acl_create(&acl, GFP_KERNEL, &mode);
if (error < 0)
return error;
inode->i_mode = mode;
if (error > 0)
set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
}
error = 0;
cleanup:
posix_acl_release(acl);
return error;
}

14
fs/gfs2/acl.c
View file

@ -137,7 +137,7 @@ static int gfs2_acl_set(struct inode *inode, int type, struct posix_acl *acl)
int gfs2_acl_create(struct gfs2_inode *dip, struct inode *inode)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct posix_acl *acl, *clone;
struct posix_acl *acl;
mode_t mode = inode->i_mode;
int error = 0;
@ -162,16 +162,10 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct inode *inode)
goto out;
}
clone = posix_acl_clone(acl, GFP_NOFS);
error = -ENOMEM;
if (!clone)
goto out;
posix_acl_release(acl);
acl = clone;
error = posix_acl_create_masq(acl, &mode);
error = posix_acl_create(&acl, GFP_NOFS, &mode);
if (error < 0)
goto out;
return error;
if (error == 0)
goto munge;

15
fs/jffs2/acl.c
View file

@ -277,7 +277,7 @@ int jffs2_check_acl(struct inode *inode, int mask)
int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, mode_t *i_mode)
{
struct posix_acl *acl, *clone;
struct posix_acl *acl;
int rc;
cache_no_acl(inode);
@ -295,18 +295,13 @@ int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, mode_t *i_mode)
if (S_ISDIR(*i_mode))
set_cached_acl(inode, ACL_TYPE_DEFAULT, acl);
clone = posix_acl_clone(acl, GFP_KERNEL);
if (!clone)
return -ENOMEM;
rc = posix_acl_create_masq(clone, i_mode);
if (rc < 0) {
posix_acl_release(clone);
rc = posix_acl_create(&acl, GFP_KERNEL, i_mode);
if (rc < 0)
return rc;
}
if (rc > 0)
set_cached_acl(inode, ACL_TYPE_ACCESS, clone);
set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
posix_acl_release(clone);
posix_acl_release(acl);
}
return 0;
}

23
fs/jfs/acl.c
View file

@ -133,8 +133,6 @@ int jfs_check_acl(struct inode *inode, int mask)
int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir)
{
struct posix_acl *acl = NULL;
struct posix_acl *clone;
mode_t mode;
int rc = 0;
if (S_ISLNK(inode->i_mode))
@ -145,25 +143,18 @@ int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir)
return PTR_ERR(acl);
if (acl) {
mode_t mode = inode->i_mode;
if (S_ISDIR(inode->i_mode)) {
rc = jfs_set_acl(tid, inode, ACL_TYPE_DEFAULT, acl);
if (rc)
goto cleanup;
}
clone = posix_acl_clone(acl, GFP_KERNEL);
if (!clone) {
rc = -ENOMEM;
goto cleanup;
}
mode = inode->i_mode;
rc = posix_acl_create_masq(clone, &mode);
if (rc >= 0) {
inode->i_mode = mode;
if (rc > 0)
rc = jfs_set_acl(tid, inode, ACL_TYPE_ACCESS,
clone);
}
posix_acl_release(clone);
rc = posix_acl_create(&acl, GFP_KERNEL, &mode);
if (rc < 0)
goto cleanup; /* posix_acl_release(NULL) is no-op */
inode->i_mode = mode;
if (rc > 0)
rc = jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl);
cleanup:
posix_acl_release(acl);
} else

10
fs/nfs/nfs3acl.c
View file

@ -427,16 +427,12 @@ int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode,
}
if (!dfacl)
return 0;
acl = posix_acl_clone(dfacl, GFP_KERNEL);
error = -ENOMEM;
if (!acl)
goto out_release_dfacl;
error = posix_acl_create_masq(acl, &mode);
acl = posix_acl_dup(dfacl);
error = posix_acl_create(&acl, GFP_KERNEL, &mode);
if (error < 0)
goto out_release_acl;
goto out_release_dfacl;
error = nfs3_proc_setacls(inode, acl, S_ISDIR(inode->i_mode) ?
dfacl : NULL);
out_release_acl:
posix_acl_release(acl);
out_release_dfacl:
posix_acl_release(dfacl);

36
fs/ocfs2/acl.c
View file

@ -382,8 +382,6 @@ int ocfs2_init_acl(handle_t *handle,
}
}
if ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) && acl) {
struct posix_acl *clone;
if (S_ISDIR(inode->i_mode)) {
ret = ocfs2_set_acl(handle, inode, di_bh,
ACL_TYPE_DEFAULT, acl,
@ -391,28 +389,22 @@ int ocfs2_init_acl(handle_t *handle,
if (ret)
goto cleanup;
}
clone = posix_acl_clone(acl, GFP_NOFS);
ret = -ENOMEM;
if (!clone)
goto cleanup;
mode = inode->i_mode;
ret = posix_acl_create_masq(clone, &mode);
if (ret >= 0) {
ret2 = ocfs2_acl_set_mode(inode, di_bh, handle, mode);
if (ret2) {
mlog_errno(ret2);
ret = ret2;
posix_acl_release(clone);
goto cleanup;
}
if (ret > 0) {
ret = ocfs2_set_acl(handle, inode,
di_bh, ACL_TYPE_ACCESS,
clone, meta_ac, data_ac);
}
ret = posix_acl_create(&acl, GFP_NOFS, &mode);
if (ret < 0)
return ret;
ret2 = ocfs2_acl_set_mode(inode, di_bh, handle, mode);
if (ret2) {
mlog_errno(ret2);
ret = ret2;
goto cleanup;
}
if (ret > 0) {
ret = ocfs2_set_acl(handle, inode,
di_bh, ACL_TYPE_ACCESS,
acl, meta_ac, data_ac);
}
posix_acl_release(clone);
}
cleanup:
posix_acl_release(acl);

18
fs/posix_acl.c
View file

@ -387,6 +387,24 @@ posix_acl_chmod_masq(struct posix_acl *acl, mode_t mode)
return 0;
}
int
posix_acl_create(struct posix_acl **acl, gfp_t gfp, mode_t *mode_p)
{
struct posix_acl *clone = posix_acl_clone(*acl, gfp);
int err = -ENOMEM;
if (clone) {
err = posix_acl_create_masq(clone, mode_p);
if (err < 0) {
posix_acl_release(clone);
clone = NULL;
}
}
posix_acl_release(*acl);
*acl = clone;
return err;
}
EXPORT_SYMBOL(posix_acl_create);
int
posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, mode_t mode)
{

30
fs/reiserfs/xattr_acl.c
View file

@ -354,9 +354,7 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
return PTR_ERR(acl);
if (acl) {
struct posix_acl *acl_copy;
mode_t mode = inode->i_mode;
int need_acl;
/* Copy the default ACL to the default ACL of a new directory */
if (S_ISDIR(inode->i_mode)) {
@ -368,29 +366,15 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
/* Now we reconcile the new ACL and the mode,
potentially modifying both */
acl_copy = posix_acl_clone(acl, GFP_NOFS);
if (!acl_copy) {
err = -ENOMEM;
goto cleanup;
}
err = posix_acl_create(&acl, GFP_NOFS, &mode);
if (err < 0)
return err;
need_acl = posix_acl_create_masq(acl_copy, &mode);
if (need_acl >= 0) {
if (mode != inode->i_mode) {
inode->i_mode = mode;
}
inode->i_mode = mode;
/* If we need an ACL.. */
if (need_acl > 0) {
err = reiserfs_set_acl(th, inode,
ACL_TYPE_ACCESS,
acl_copy);
if (err)
goto cleanup_copy;
}
}
cleanup_copy:
posix_acl_release(acl_copy);
/* If we need an ACL.. */
if (err > 0)
err = reiserfs_set_acl(th, inode, ACL_TYPE_ACCESS, acl);
cleanup:
posix_acl_release(acl);
} else {

28
fs/xfs/linux-2.6/xfs_acl.c
View file

@ -282,29 +282,23 @@ posix_acl_default_exists(struct inode *inode)
* No need for i_mutex because the inode is not yet exposed to the VFS.
*/
int
xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl)
xfs_inherit_acl(struct inode *inode, struct posix_acl *acl)
{
struct posix_acl *clone;
mode_t mode;
mode_t mode = inode->i_mode;
int error = 0, inherit = 0;
if (S_ISDIR(inode->i_mode)) {
error = xfs_set_acl(inode, ACL_TYPE_DEFAULT, default_acl);
error = xfs_set_acl(inode, ACL_TYPE_DEFAULT, acl);
if (error)
return error;
goto out;
}
clone = posix_acl_clone(default_acl, GFP_KERNEL);
if (!clone)
return -ENOMEM;
mode = inode->i_mode;
error = posix_acl_create_masq(clone, &mode);
error = posix_acl_create(&acl, GFP_KERNEL, &mode);
if (error < 0)
goto out_release_clone;
return error;
/*
* If posix_acl_create_masq returns a positive value we need to
* If posix_acl_create returns a positive value we need to
* inherit a permission that can't be represented using the Unix
* mode bits and we actually need to set an ACL.
*/
@ -313,13 +307,13 @@ xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl)
error = xfs_set_mode(inode, mode);
if (error)
goto out_release_clone;
goto out;
if (inherit)
error = xfs_set_acl(inode, ACL_TYPE_ACCESS, clone);
error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl);
out_release_clone:
posix_acl_release(clone);
out:
posix_acl_release(acl);
return error;
}

2
fs/xfs/linux-2.6/xfs_iops.c
View file

@ -202,9 +202,9 @@ xfs_vn_mknod(
if (default_acl) {
error = -xfs_inherit_acl(inode, default_acl);
default_acl = NULL;
if (unlikely(error))
goto out_cleanup_inode;
posix_acl_release(default_acl);
}

1
include/linux/posix_acl.h
View file

@ -80,6 +80,7 @@ extern struct posix_acl *posix_acl_from_mode(mode_t, gfp_t);
extern int posix_acl_equiv_mode(const struct posix_acl *, mode_t *);
extern int posix_acl_create_masq(struct posix_acl *, mode_t *);
extern int posix_acl_chmod_masq(struct posix_acl *, mode_t);
extern int posix_acl_create(struct posix_acl **, gfp_t, mode_t *);
extern int posix_acl_chmod(struct posix_acl **, gfp_t, mode_t);
extern struct posix_acl *get_posix_acl(struct inode *, int);