From: Alex Hornung <alex@alexhornung.com>
Date: Mon, 30 Jul 2012 11:20:00 +0000 (+0000)
Subject: open - implement O_DIRECTORY
X-Git-Url: https://gitweb.dragonflybsd.org/~alexh/dragonfly.git/commitdiff_plain/28d748b9da52d38a8f9b903e9dde1480effdf8b7

open - implement O_DIRECTORY
---

diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c
index 9b28f6611f..90ae370e67 100644
--- a/sys/kern/vfs_vnops.c
+++ b/sys/kern/vfs_vnops.c
@@ -208,6 +208,10 @@ again:
 		error = EOPNOTSUPP;
 		goto bad;
 	}
+	if (vp->v_type != VDIR && (fmode & O_DIRECTORY)) {
+		error = ENOTDIR;
+		goto bad;
+	}
 	if ((fmode & O_CREAT) == 0) {
 		if (fmode & (FWRITE | O_TRUNC)) {
 			if (vp->v_type == VDIR) {
diff --git a/sys/sys/fcntl.h b/sys/sys/fcntl.h
index 8566bb60ea..489f0b625f 100644
--- a/sys/sys/fcntl.h
+++ b/sys/sys/fcntl.h
@@ -107,6 +107,8 @@
 #define O_FBUFFERED	0x02000000	/* force buffered I/O */
 #define O_MAPONREAD	0x04000000	/* memory map read buffer */
 
+#define O_DIRECTORY	0x08000000	/* error if not a directory */
+
 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
 #define FREVOKED	0x10000000	/* revoked by fdrevoke() */
 #define FAPPENDONLY	0x20000000	/* O_APPEND cannot be changed */