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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

Browse source 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  fs: take the ACL checks to common code
  bury posix_acl_..._masq() variants
  kill boilerplates around posix_acl_create_masq()
  generic_acl: no need to clone acl just to push it to set_cached_acl()
  kill boilerplate around posix_acl_chmod_masq()
  reiserfs: cache negative ACLs for v1 stat format
  xfs: cache negative ACLs if there is no attribute fork
  9p: do no return 0 from ->check_acl without actually checking
  vfs: move ACL cache lookup into generic code
  CIFS: Fix oops while mounting with prefixpath
  xfs: Fix wrong return value of xfs_file_aio_write
  fix devtmpfs race
  caam: don't pass bogus S_IFCHR to debugfs_create_...()
  get rid of create_proc_entry() abuses - proc_mkdir() is there for purpose
  asus-wmi: ->is_visible() can't return negative
  fix jffs2 ACLs on big-endian with 16bit mode_t
  9p: close ACL leaks
  ocfs2_init_acl(): fix a leak
  VFS : mount lock scalability for internal mounts
This commit is contained in:
Linus Torvalds 2011-07-25 12:53:15 -07:00
commit 0003230e82
76 changed files with 477 additions and 795 deletions
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68
fs/9p/acl.c
View file

@ -96,14 +96,11 @@ static struct posix_acl *v9fs_get_cached_acl(struct inode *inode, int type)
return acl;
}
int v9fs_check_acl(struct inode *inode, int mask)
struct posix_acl *v9fs_iop_get_acl(struct inode *inode, int type)
{
struct posix_acl *acl;
struct v9fs_session_info *v9ses;
if (mask & MAY_NOT_BLOCK)
return -ECHILD;
v9ses = v9fs_inode2v9ses(inode);
if (((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT) ||
((v9ses->flags & V9FS_ACL_MASK) != V9FS_POSIX_ACL)) {
@ -111,18 +108,10 @@ int v9fs_check_acl(struct inode *inode, int mask)
* On access = client and acl = on mode get the acl
* values from the server
*/
return 0;
return NULL;
}
acl = v9fs_get_cached_acl(inode, ACL_TYPE_ACCESS);
return v9fs_get_cached_acl(inode, type);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
int error = posix_acl_permission(inode, acl, mask);
posix_acl_release(acl);
return error;
}
return -EAGAIN;
}
static int v9fs_set_acl(struct dentry *dentry, int type, struct posix_acl *acl)
@ -165,32 +154,32 @@ err_free_out:
int v9fs_acl_chmod(struct dentry *dentry)
{
int retval = 0;
struct posix_acl *acl, *clone;
struct posix_acl *acl;
struct inode *inode = dentry->d_inode;
if (S_ISLNK(inode->i_mode))
return -EOPNOTSUPP;
acl = v9fs_get_cached_acl(inode, ACL_TYPE_ACCESS);
if (acl) {
clone = posix_acl_clone(acl, GFP_KERNEL);
retval = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
if (retval)
return retval;
retval = v9fs_set_acl(dentry, ACL_TYPE_ACCESS, acl);
posix_acl_release(acl);
if (!clone)
return -ENOMEM;
retval = posix_acl_chmod_masq(clone, inode->i_mode);
if (!retval)
retval = v9fs_set_acl(dentry, ACL_TYPE_ACCESS, clone);
posix_acl_release(clone);
}
return retval;
}
int v9fs_set_create_acl(struct dentry *dentry,
struct posix_acl *dpacl, struct posix_acl *pacl)
struct posix_acl **dpacl, struct posix_acl **pacl)
{
v9fs_set_acl(dentry, ACL_TYPE_DEFAULT, dpacl);
v9fs_set_acl(dentry, ACL_TYPE_ACCESS, pacl);
posix_acl_release(dpacl);
posix_acl_release(pacl);
if (dentry) {
v9fs_set_acl(dentry, ACL_TYPE_DEFAULT, *dpacl);
v9fs_set_acl(dentry, ACL_TYPE_ACCESS, *pacl);
}
posix_acl_release(*dpacl);
posix_acl_release(*pacl);
*dpacl = *pacl = NULL;
return 0;
}
@ -209,29 +198,18 @@ int v9fs_acl_mode(struct inode *dir, mode_t *modep,
mode &= ~current_umask();
}
if (acl) {
struct posix_acl *clone;
if (S_ISDIR(mode))
*dpacl = acl;
clone = posix_acl_clone(acl, GFP_NOFS);
retval = -ENOMEM;
if (!clone)
goto cleanup;
retval = posix_acl_create_masq(clone, &mode);
if (retval < 0) {
posix_acl_release(clone);
goto cleanup;
}
*dpacl = posix_acl_dup(acl);
retval = posix_acl_create(&acl, GFP_NOFS, &mode);
if (retval < 0)
return retval;
if (retval > 0)
*pacl = clone;
*pacl = acl;
else
posix_acl_release(acl);
}
*modep = mode;
return 0;
cleanup:
posix_acl_release(acl);
return retval;
}
static int v9fs_remote_get_acl(struct dentry *dentry, const char *name,

10
fs/9p/acl.h
View file

@ -16,14 +16,14 @@
#ifdef CONFIG_9P_FS_POSIX_ACL
extern int v9fs_get_acl(struct inode *, struct p9_fid *);
extern int v9fs_check_acl(struct inode *inode, int mask);
extern struct posix_acl *v9fs_iop_get_acl(struct inode *inode, int type);
extern int v9fs_acl_chmod(struct dentry *);
extern int v9fs_set_create_acl(struct dentry *,
struct posix_acl *, struct posix_acl *);
struct posix_acl **, struct posix_acl **);
extern int v9fs_acl_mode(struct inode *dir, mode_t *modep,
struct posix_acl **dpacl, struct posix_acl **pacl);
#else
#define v9fs_check_acl NULL
#define v9fs_iop_get_acl NULL
static inline int v9fs_get_acl(struct inode *inode, struct p9_fid *fid)
{
return 0;
@ -33,8 +33,8 @@ static inline int v9fs_acl_chmod(struct dentry *dentry)
return 0;
}
static inline int v9fs_set_create_acl(struct dentry *dentry,
struct posix_acl *dpacl,
struct posix_acl *pacl)
struct posix_acl **dpacl,
struct posix_acl **pacl)
{
return 0;
}

13
fs/9p/vfs_inode_dotl.c
View file

@ -287,7 +287,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
goto error;
/* Now set the ACL based on the default value */
v9fs_set_create_acl(dentry, dacl, pacl);
v9fs_set_create_acl(dentry, &dacl, &pacl);
v9inode = V9FS_I(inode);
mutex_lock(&v9inode->v_mutex);
@ -328,6 +328,7 @@ error:
err_clunk_old_fid:
if (ofid)
p9_client_clunk(ofid);
v9fs_set_create_acl(NULL, &dacl, &pacl);
return err;
}
@ -421,12 +422,13 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
d_instantiate(dentry, inode);
}
/* Now set the ACL based on the default value */
v9fs_set_create_acl(dentry, dacl, pacl);
v9fs_set_create_acl(dentry, &dacl, &pacl);
inc_nlink(dir);
v9fs_invalidate_inode_attr(dir);
error:
if (fid)
p9_client_clunk(fid);
v9fs_set_create_acl(NULL, &dacl, &pacl);
return err;
}
@ -826,10 +828,11 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
d_instantiate(dentry, inode);
}
/* Now set the ACL based on the default value */
v9fs_set_create_acl(dentry, dacl, pacl);
v9fs_set_create_acl(dentry, &dacl, &pacl);
error:
if (fid)
p9_client_clunk(fid);
v9fs_set_create_acl(NULL, &dacl, &pacl);
return err;
}
@ -914,7 +917,7 @@ const struct inode_operations v9fs_dir_inode_operations_dotl = {
.getxattr = generic_getxattr,
.removexattr = generic_removexattr,
.listxattr = v9fs_listxattr,
.check_acl = v9fs_check_acl,
.get_acl = v9fs_iop_get_acl,
};
const struct inode_operations v9fs_file_inode_operations_dotl = {
@ -924,7 +927,7 @@ const struct inode_operations v9fs_file_inode_operations_dotl = {
.getxattr = generic_getxattr,
.removexattr = generic_removexattr,
.listxattr = v9fs_listxattr,
.check_acl = v9fs_check_acl,
.get_acl = v9fs_iop_get_acl,
};
const struct inode_operations v9fs_symlink_inode_operations_dotl = {