[-V5,03/24] vfs: Add a comment to inode_permission()
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Message ID 1298469131-16555-4-git-send-email-aneesh.kumar@linux.vnet.ibm.com
State New, archived
Headers show

Commit Message

Aneesh Kumar K.V Feb. 23, 2011, 1:51 p.m. UTC
None

Patch
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diff --git a/fs/namei.c b/fs/namei.c
index f09ab1f..0bfc546 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -167,7 +167,7 @@  EXPORT_SYMBOL(putname);
 #endif
 
 /*
- * This does basic POSIX ACL permission checking
+ * This does the basic permission checking
  */
 static int acl_permission_check(struct inode *inode, int mask, unsigned int flags,
 		int (*check_acl)(struct inode *inode, int mask, unsigned int flags))
@@ -217,7 +217,7 @@  int generic_permission(struct inode *inode, int mask, unsigned int flags,
 	int ret;
 
 	/*
-	 * Do the basic POSIX ACL permission checks.
+	 * Do the basic permission checks.
 	 */
 	ret = acl_permission_check(inode, mask, flags, check_acl);
 	if (ret != -EACCES)
@@ -251,6 +251,8 @@  int generic_permission(struct inode *inode, int mask, unsigned int flags,
  * We use "fsuid" for this, letting us set arbitrary permissions
  * for filesystem access without changing the "normal" uids which
  * are used for other things.
+ *
+ * When checking for MAY_APPEND, MAY_WRITE must also be set in @mask.
  */
 int inode_permission(struct inode *inode, int mask)
 {