X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=fs%2Ffcntl.c;h=dc4a7007f4e742c4e30563db78b34bd21d39ab58;hb=e5ea0a9fca5612808839dd4bcc41c46fc02451f9;hp=5f96786d1c73dc6c9ac27565b521835f6fe5ff12;hpb=cf41f8ac386e8d62122e7e394b4c6b3e3ab30ede;p=karo-tx-linux.git

diff --git a/fs/fcntl.c b/fs/fcntl.c
index 5f96786d1c73..dc4a7007f4e7 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -208,8 +208,11 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
 	struct inode * inode = filp->f_dentry->d_inode;
 	int error = 0;
 
-	/* O_APPEND cannot be cleared if the file is marked as append-only */
-	if (!(arg & O_APPEND) && IS_APPEND(inode))
+	/*
+	 * O_APPEND cannot be cleared if the file is marked as append-only
+	 * and the file is open for write.
+	 */
+	if (((arg ^ filp->f_flags) & O_APPEND) && IS_APPEND(inode))
 		return -EPERM;
 
 	/* O_NOATIME can only be set by the owner or superuser */