From 4140f2bfc141ee9a91723d274344769f8b11a5f9 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Sat, 24 Oct 1998 06:36:22 +0000
Subject: make sure that apps can't close one of the internal smbw file
 descriptors by catching close attempts on those fds and returning EBADF.
 (This used to be commit 9d863fb1681a5b03696552e1d93fe339b4bae455)

---
 source3/smbwrapper/smbw.c | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

(limited to 'source3/smbwrapper/smbw.c')

diff --git a/source3/smbwrapper/smbw.c b/source3/smbwrapper/smbw.c
index c09d7509f0..622581b7a6 100644
--- a/source3/smbwrapper/smbw.c
+++ b/source3/smbwrapper/smbw.c
@@ -125,6 +125,25 @@ int smbw_fd(int fd)
 	return smbw_file_bmap && bitmap_query(smbw_file_bmap, fd);
 }
 
+/***************************************************** 
+determine if a file descriptor is an internal smbw fd
+*******************************************************/
+int smbw_local_fd(int fd)
+{
+	struct smbw_server *srv;
+	
+	smbw_init();
+
+	if (smbw_busy) return 0;
+	if (smbw_shared_fd(fd)) return 1;
+
+	for (srv=smbw_srvs;srv;srv=srv->next) {
+		if (srv->cli.fd == fd) return 1;
+	}
+
+	return 0;
+}
+
 /***************************************************** 
 a crude inode number generator
 *******************************************************/
@@ -736,7 +755,6 @@ ssize_t smbw_write(int fd, void *buf, size_t count)
 
 	file = smbw_file(fd);
 	if (!file) {
-		DEBUG(3,("bad fd in read\n"));
 		errno = EBADF;
 		smbw_busy--;
 		return -1;
@@ -768,7 +786,6 @@ ssize_t smbw_pwrite(int fd, void *buf, size_t count, off_t ofs)
 
 	file = smbw_file(fd);
 	if (!file) {
-		DEBUG(3,("bad fd in read\n"));
 		errno = EBADF;
 		smbw_busy--;
 		return -1;
-- 
cgit