From eeb72e0eb64d3acf932f93216c0055964042500b Mon Sep 17 00:00:00 2001
From: Steve French <sfrench@samba.org>
Date: Sun, 1 Aug 2004 01:14:08 +0000
Subject: [PATCH] r1616: Fix user unmount of shares mount with suid mount.cifs
 (This used to be commit 2bd28007159a3ce4a1b8737218e7b75bc2286682)

---
 source3/client/mount.cifs.c | 42 +++++++++++++++++++++++++++++--------
 1 file changed, 33 insertions(+), 9 deletions(-)

diff --git a/source3/client/mount.cifs.c b/source3/client/mount.cifs.c
index 5670a147468c..55934e04b3c6 100755
--- a/source3/client/mount.cifs.c
+++ b/source3/client/mount.cifs.c
@@ -38,7 +38,7 @@
 #include <fcntl.h>
 
 #define MOUNT_CIFS_VERSION_MAJOR "1"
-#define MOUNT_CIFS_VERSION_MINOR "3"
+#define MOUNT_CIFS_VERSION_MINOR "4"
 
 #ifndef MOUNT_CIFS_VENDOR_SUFFIX
 #define MOUNT_CIFS_VENDOR_SUFFIX ""
@@ -57,6 +57,7 @@ static int got_ip = 0;
 static int got_unc = 0;
 static int got_uid = 0;
 static int got_gid = 0;
+static int free_share_name = 0;
 static char * user_name = NULL;
 char * mountpassword = NULL;
 
@@ -502,8 +503,9 @@ static int parse_options(char * options, int * filesys_flags)
 }
 
 /* Note that caller frees the returned buffer if necessary */
-char * parse_server(char * unc_name)
+char * parse_server(char ** punc_name)
 {
+	char * unc_name = *punc_name;
 	int length = strnlen(unc_name,1024);
 	char * share;
 	char * ipaddress_string = NULL;
@@ -527,11 +529,23 @@ char * parse_server(char * unc_name)
 		return 0;
 	} else {
 		if(strncmp(unc_name,"//",2) && strncmp(unc_name,"\\\\",2)) {
-			printf("mount error: improperly formatted UNC name.");
-			printf(" %s does not begin with \\\\ or //\n",unc_name);
-			return 0;
+			/* check for nfs syntax ie server:share */
+			share = strchr(unc_name,':');
+			if(share) {
+				free_share_name = 1;
+				*punc_name = malloc(length+3);
+				*share = '/';
+				strncpy((*punc_name)+2,unc_name,length);
+				unc_name = *punc_name;
+				unc_name[length+2] = 0;
+				goto continue_unc_parsing;
+			} else {
+				printf("mount error: improperly formatted UNC name.");
+				printf(" %s does not begin with \\\\ or //\n",unc_name);
+				return 0;
+			}
 		} else {
-			unc_name[0] = '\\';
+continue_unc_parsing:
 			unc_name[0] = '/';
 			unc_name[1] = '/';
 			unc_name += 2;
@@ -753,8 +767,7 @@ int main(int argc, char ** argv)
 		get_password_from_file(0, getenv("PASSWD_FILE"));
 	}
 
-	ipaddr = parse_server(share_name);
-
+	ipaddr = parse_server(&share_name);
 	if(ipaddr == NULL)
 		return -1;
 	
@@ -879,8 +892,9 @@ int main(int argc, char ** argv)
 			mountent.mnt_fsname = share_name;
 			mountent.mnt_dir = mountpoint; 
 			mountent.mnt_type = "cifs"; 
-			mountent.mnt_opts = malloc(200);
+			mountent.mnt_opts = malloc(220);
 			if(mountent.mnt_opts) {
+				char * mount_user = getusername();
 				memset(mountent.mnt_opts,0,200);
 				if(flags & MS_RDONLY)
 					strcat(mountent.mnt_opts,"ro");
@@ -898,6 +912,13 @@ int main(int argc, char ** argv)
 					strcat(mountent.mnt_opts,",nodev");
 				if(flags & MS_SYNCHRONOUS)
 					strcat(mountent.mnt_opts,",synch");
+				if(mount_user) {
+					if(getuid() != 0) {
+						strcat(mountent.mnt_opts,",user=");
+						strcat(mountent.mnt_opts,mount_user);
+					}
+					free(mount_user);
+				}
 			}
 			mountent.mnt_freq = 0;
 			mountent.mnt_passno = 0;
@@ -927,6 +948,9 @@ int main(int argc, char ** argv)
 		free(resolved_path);
 	}
 
+	if(free_share_name) {
+		free(share_name);
+		}
 	return 0;
 }
 
-- 
2.34.1