From: scjody <scjody>
Date: Fri, 3 Aug 2007 17:07:16 +0000 (+0000)
Subject: Branch b1_6
X-Git-Tag: v1_7_91~90
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=69b8a5830acdb9077455080cca10a9e9c4622c5d

Branch b1_6

Permission check update to libsysio.

b=12884
---

diff --git a/libsysio/include/creds.h b/libsysio/include/creds.h
index 90305e1..672dfcf 100644
--- a/libsysio/include/creds.h
+++ b/libsysio/include/creds.h
@@ -47,6 +47,11 @@
 #define _CREDS_H_
 
 /*
+ * Superuser's UID.
+ */
+#define _SYSIO_ROOT_UID	0
+
+/*
  * Data structure for user credentials
  */
 
@@ -56,4 +61,12 @@ struct creds {
 	int creds_ngids;
 };
 
+
+#ifdef _SYSIO_ROOT_UID
+/*
+ * Is caller the superuser?
+ */
+#define _sysio_is_root(_crp) \
+	((_crp)->creds_uid == _SYSIO_ROOT_UID)
+#endif
 #endif
diff --git a/libsysio/src/access.c b/libsysio/src/access.c
index 80e8fcd..784de8e 100644
--- a/libsysio/src/access.c
+++ b/libsysio/src/access.c
@@ -99,6 +99,16 @@ _sysio_check_permission(struct pnode *pno, struct creds *crp, int amode)
 	err = -EACCES;					/* assume error */
 	stat = &ino->i_stbuf;
 	do {
+#ifdef _SYSIO_ROOT_UID
+		/*
+		 * Root?
+		 */
+		if (_sysio_is_root(crp)) {
+			err = 0;
+			break;
+		}
+#endif
+
 		/*
 		 * Owner?
 		 */