From ad03fe743959c04a9e7d611c026c201a14ce0ed6 Mon Sep 17 00:00:00 2001 From: Andrey Koloskov <[email protected]> To: David Woodhouse <[email protected]> Cc: [email protected] Cc: [email protected]
Date: Tue, 13 Jan 2015 14:37:18 +0400 Subject: [PATCH] jffs2: Do not rewrite posix_acl_equiv_mode() result in jffs2_set_acl() Result of posix_acl_equiv_mode() is rewritten with one of jffs2_do_setattr(), so it is always assumed that acl can be exactly represented by the traditional file mode permission bits. The patch adds a new variable for store result of posix_acl_equiv_mode(). Found by Linux File System Verification project (linuxtesting.org). Signed-off-by: Andrey Koloskov <[email protected]> --- fs/jffs2/acl.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c index 2f7a3c0..63705bd 100644 --- a/fs/jffs2/acl.c +++ b/fs/jffs2/acl.c @@ -229,16 +229,16 @@ static int __jffs2_set_acl(struct inode *inode, int xprefix, struct posix_acl *a int jffs2_set_acl(struct inode *inode, struct posix_acl *acl, int type) { - int rc, xprefix; + int rc, xprefix, not_equiv; switch (type) { case ACL_TYPE_ACCESS: xprefix = JFFS2_XPREFIX_ACL_ACCESS; if (acl) { umode_t mode = inode->i_mode; - rc = posix_acl_equiv_mode(acl, &mode); - if (rc < 0) - return rc; + not_equiv = posix_acl_equiv_mode(acl, &mode); + if (not_equiv < 0) + return not_equiv; if (inode->i_mode != mode) { struct iattr attr; @@ -249,7 +249,7 @@ int jffs2_set_acl(struct inode *inode, struct posix_acl *acl, int type) if (rc < 0) return rc; } - if (rc == 0) + if (not_equiv == 0) acl = NULL; } break; -- 1.7.9.5
