Added caching of user password if it was entered via getpass. We were already

caching the password if it came from the command line or from the environment.
This completes the set and deals with the bloody nusance when reconnecting
a connection after we have gone daemon...  Grrr...

Added code to clean up the mount point following a catastrophic failure
during reconnect.  The smbmount daemon was exiting but leaving the mount
point in an unusable state.  If smbmount must exit following a reconnect
failure, we "unmount" the mount point and clean up mnttab.  Currently,
the unmount works, fixing some really ugly I/O errors and failure when
trying to remount.  The cleanup on mnttab still has problems.  This
is better than what it was and doesn't break anything that wasn't broken
before, so I'm committing this in even with the mnttab problem.  Will
commit the fix to that when I figure out what is busted there...

	-mhw-
(This used to be commit ad8389804cec6c6bf04601a1d7bb3fb7aa8c2274)

1 files changed, 102 insertions, 1 deletions

diff --git a/source3/client/smbmount.c b/source3/client/smbmount.c
index fd82c1bc41..c3f05fd8e6 100644
--- a/source3/client/smbmount.c
+++ b/source3/client/smbmount.c
@@ -29,6 +29,8 @@
 
 #include "includes.h"
 
+#include <mntent.h>
+
 #include <asm/types.h>
 #include <linux/smb_fs.h>
 static struct smb_conn_opt conn_options;
@@ -47,6 +49,7 @@ extern pstring desthost;
 extern pstring global_myname;
 extern pstring myhostname;
 extern pstring password;
+extern pstring smb_login_passwd;
 extern pstring username;
 extern pstring workgroup;
 char *cmdstr="";
@@ -258,6 +261,17 @@ static BOOL mount_send_login(char *inbuf, char *outbuf)
   if (!res)
     return res;
 
+  if( !got_pass ) {
+	/* Ok...  If we got this thing connected and got_pass is false,
+	   that means that the client util prompted for a password and
+	   got a good one...  We need to cache this in password and set
+	   got_pass for future retries.  We don't want to prompt for the
+	   $#@$#$ password everytime the network blinks!
+	*/
+
+      pstrcpy(password,smb_login_passwd);
+      got_pass = True;
+  }
   conn_options.protocol = opt.protocol;
   conn_options.case_handling = CASE_LOWER;
   conn_options.max_xmit = opt.max_xmit;
@@ -275,6 +289,86 @@ static BOOL mount_send_login(char *inbuf, char *outbuf)
   return True;
 }
 
+/****************************************************************************
+unmount smbfs  (this is a bailout routine to clean up if a reconnect fails)
+	Code blatently stolen from smbumount.c
+		-mhw-
+****************************************************************************/
+static void smb_umount( char *mount_point )
+{
+	int fd;
+        struct mntent *mnt;
+        FILE* mtab;
+        FILE* new_mtab;
+
+	/* Programmers Note:
+		This routine only gets called to the scene of a disaster
+		to shoot the survivors...  A connection that was working
+		has now apparently failed.  We have an active mount point
+		(presumably) that we need to dump.  If we get errors along
+		the way - make some noise, but we are already turning out
+		the lights to exit anyways...
+	*/
+        if (umount(mount_point) != 0) {
+                DEBUG(0, ("Could not umount %s: %s\n",
+                        mount_point, strerror(errno)));
+                return;
+        }
+
+        if ((fd = open(MOUNTED"~", O_RDWR|O_CREAT|O_EXCL, 0600)) == -1)
+        {
+                DEBUG(0, ("Can't get "MOUNTED"~ lock file"));
+                return;
+        }
+        close(fd);
+	
+        if ((mtab = setmntent(MOUNTED, "r")) == NULL) {
+                DEBUG(0, ("Can't open " MOUNTED ": %s\n",
+                        strerror(errno)));
+                return;
+        }
+
+#define MOUNTED_TMP MOUNTED".tmp"
+
+        if ((new_mtab = setmntent(MOUNTED_TMP, "w")) == NULL) {
+                DEBUG(0, ("Can't open " MOUNTED_TMP ": %s\n",
+                        strerror(errno)));
+                endmntent(mtab);
+                return;
+        }
+
+        while ((mnt = getmntent(mtab)) != NULL) {
+                if (strcmp(mnt->mnt_dir, mount_point) != 0) {
+                        addmntent(new_mtab, mnt);
+                }
+        }
+
+        endmntent(mtab);
+
+        if (fchmod (fileno (new_mtab), S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) < 0) {
+                DEBUG(0, ("Error changing mode of %s: %s\n",
+                        MOUNTED_TMP, strerror(errno)));
+                return;
+        }
+
+        endmntent(new_mtab);
+
+        if (rename(MOUNTED_TMP, MOUNTED) < 0) {
+                DEBUG(0, ("Cannot rename %s to %s: %s\n",
+                        MOUNTED, MOUNTED_TMP, strerror(errno)));
+                return;
+        }
+
+        if (unlink(MOUNTED"~") == -1)
+        {
+                DEBUG(0, ("Can't remove "MOUNTED"~"));
+                return;
+        }
+
+	return;
+}
+
+
 /*
  * Call the smbfs ioctl to install a connection socket,
  * then wait for a signal to reconnect. Note that we do
@@ -349,8 +443,10 @@ send_fs_socket(char *mount_point, char *inbuf, char *outbuf)
 		if (!res)
 		{
 			DEBUG(0, ("smbmount: login failed\n"));
+			break;
 		}
 	}
+	smb_umount( mount_point );
 	DEBUG(0, ("smbmount: exit\n"));
 	exit(1);
 }
@@ -411,8 +507,13 @@ static void cmd_mount(char *inbuf,char *outbuf)
 		exit(1);
 	}
 
+	/* Ok...  This is the rubicon for that mount point...  At any point
+	   after this, if the connections fail and can not be reconstructed
+	   for any reason, we will have to unmount the mount point.  There
+	   is no exit from the next call...
+	*/
 	send_fs_socket(mount_point, inbuf, outbuf);
-}	
+}
 
 
 /* This defines the commands supported by this client */