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Date: Thu, 11 Aug 2011 16:00:47 -0400
From: Mimi Zohar <zohar@...ux.vnet.ibm.com>
To: Eric Paris <eparis@...isplace.org>
Cc: linux-security-module@...r.kernel.org, linux-next@...r.kernel.org,
linux-kernel@...r.kernel.org, James Morris <jmorris@...ei.org>,
Stephen Rothwell <sfr@...b.auug.org.au>,
Steve French <smfrench@...il.com>, linux-cifs@...r.kernel.org,
David Safford <safford@...son.ibm.com>,
Mimi Zohar <zohar@...ibm.com>
Subject: Re: [PATCH] CIFS: remove local xattr definitions
On Thu, 2011-08-11 at 15:29 -0400, Eric Paris wrote:
> Not that this patch is wrong, but shouldn't cifs include xattr.h
> directly rather than rely on such an obscure indirect callchain as
> well?
>
> -Eric
True, updated below.
thanks,
Mimi
---
Local XATTR_TRUSTED_PREFIX_LEN and XATTR_SECURITY_PREFIX_LEN definitions
redefined ones in 'linux/xattr.h'. This was caused by commit 9d8f13ba3f48
("security: new security_inode_init_security API adds function callback")
including 'linux/xattr.h' in 'linux/security.h'.
In file included from include/linux/security.h:39,
from include/net/sock.h:54,
from fs/cifs/cifspdu.h:25,
from fs/cifs/xattr.c:26:
This patch removes the local definitions.
Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Signed-off-by: Mimi Zohar <zohar@...ibm.com>
---
fs/cifs/xattr.c | 40 ++++++++++++++++++----------------------
1 files changed, 18 insertions(+), 22 deletions(-)
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index 2a22fb2..c323088 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -22,6 +22,7 @@
#include <linux/fs.h>
#include <linux/posix_acl_xattr.h>
#include <linux/slab.h>
+#include <linux/xattr.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
@@ -31,16 +32,8 @@
#define MAX_EA_VALUE_SIZE 65535
#define CIFS_XATTR_DOS_ATTRIB "user.DosAttrib"
#define CIFS_XATTR_CIFS_ACL "system.cifs_acl"
-#define CIFS_XATTR_USER_PREFIX "user."
-#define CIFS_XATTR_SYSTEM_PREFIX "system."
-#define CIFS_XATTR_OS2_PREFIX "os2."
-#define CIFS_XATTR_SECURITY_PREFIX "security."
-#define CIFS_XATTR_TRUSTED_PREFIX "trusted."
-#define XATTR_TRUSTED_PREFIX_LEN 8
-#define XATTR_SECURITY_PREFIX_LEN 9
-/* BB need to add server (Samba e.g) support for security and trusted prefix */
-
+/* BB need to add server (Samba e.g) support for security and trusted prefix */
int cifs_removexattr(struct dentry *direntry, const char *ea_name)
{
@@ -76,8 +69,8 @@ int cifs_removexattr(struct dentry *direntry, const char *ea_name)
}
if (ea_name == NULL) {
cFYI(1, "Null xattr names not supported");
- } else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5)
- && (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4))) {
+ } else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)
+ && (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN))) {
cFYI(1,
"illegal xattr request %s (only user namespace supported)",
ea_name);
@@ -88,7 +81,7 @@ int cifs_removexattr(struct dentry *direntry, const char *ea_name)
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto remove_ea_exit;
- ea_name += 5; /* skip past user. prefix */
+ ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, NULL,
(__u16)0, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -149,21 +142,23 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
if (ea_name == NULL) {
cFYI(1, "Null xattr names not supported");
- } else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5) == 0) {
+ } else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)
+ == 0) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto set_ea_exit;
if (strncmp(ea_name, CIFS_XATTR_DOS_ATTRIB, 14) == 0)
cFYI(1, "attempt to set cifs inode metadata");
- ea_name += 5; /* skip past user. prefix */
+ ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value,
(__u16)value_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
- } else if (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4) == 0) {
+ } else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN)
+ == 0) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto set_ea_exit;
- ea_name += 4; /* skip past os2. prefix */
+ ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */
rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value,
(__u16)value_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -269,7 +264,8 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
/* return alt name if available as pseudo attr */
if (ea_name == NULL) {
cFYI(1, "Null xattr names not supported");
- } else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5) == 0) {
+ } else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)
+ == 0) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto get_ea_exit;
@@ -277,15 +273,15 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
cFYI(1, "attempt to query cifs inode metadata");
/* revalidate/getattr then populate from inode */
} /* BB add else when above is implemented */
- ea_name += 5; /* skip past user. prefix */
+ ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value,
buf_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
- } else if (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4) == 0) {
+ } else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto get_ea_exit;
- ea_name += 4; /* skip past os2. prefix */
+ ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */
rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value,
buf_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -339,10 +335,10 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
cFYI(1, "Query CIFS ACL not supported yet");
#endif /* CONFIG_CIFS_ACL */
} else if (strncmp(ea_name,
- CIFS_XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) == 0) {
+ XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) == 0) {
cFYI(1, "Trusted xattr namespace not supported yet");
} else if (strncmp(ea_name,
- CIFS_XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) == 0) {
+ XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) == 0) {
cFYI(1, "Security xattr namespace not supported yet");
} else
cFYI(1,
--
1.7.3.4
--
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