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ocfs2: add ocfs2_check_acl

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This function is used to enhance permission checking with POSIX ACLs.

Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Tiger Yang 2008-11-14 11:17:18 +08:00 committed by Mark Fasheh
parent 929fb014e0
commit 23fc2702be
3 changed files with 27 additions and 1 deletions
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15
fs/ocfs2/acl.c
View File

@ -230,6 +230,21 @@ static int ocfs2_set_acl(handle_t *handle,
return ret;
}
int ocfs2_check_acl(struct inode *inode, int mask)
{
struct posix_acl *acl = ocfs2_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
int ret = posix_acl_permission(inode, acl, mask);
posix_acl_release(acl);
return ret;
}
return -EAGAIN;
}
static size_t ocfs2_xattr_list_acl_access(struct inode *inode,
char *list,
size_t list_len,

10
fs/ocfs2/acl.h
View File

@ -26,4 +26,14 @@ struct ocfs2_acl_entry {
__le32 e_id;
};
#ifdef CONFIG_OCFS2_FS_POSIX_ACL
extern int ocfs2_check_acl(struct inode *, int);
#else /* CONFIG_OCFS2_FS_POSIX_ACL*/
#define ocfs2_check_acl NULL
#endif /* CONFIG_OCFS2_FS_POSIX_ACL*/
#endif /* OCFS2_ACL_H */

3
fs/ocfs2/file.c
View File

@ -56,6 +56,7 @@
#include "suballoc.h"
#include "super.h"
#include "xattr.h"
#include "acl.h"
#include "buffer_head_io.h"
@ -1035,7 +1036,7 @@ int ocfs2_permission(struct inode *inode, int mask)
goto out;
}
ret = generic_permission(inode, mask, NULL);
ret = generic_permission(inode, mask, ocfs2_check_acl);
ocfs2_inode_unlock(inode, 0);
out: