The -u option now also accepts a numerical user id

CONTRIBUTORS

@@ -2842,6 +2842,7 @@ Derek Kelly <user.vdr@gmail.com>
  for reporting a missing template for DVBDIR in Make.config.template
  for suggesting to add ARGSDIR to the ONEDIR section of Make.config.template
  for suggesting to change the naming of "binary skip mode" to "adaptive skip mode"
+ for suggesting to make the -u option also accept a numerical user id
 
 Marcel Unbehaun <frostworks@gmx.de>
  for adding cRecordingInfo::GetEvent()

HISTORY

@@ -8644,3 +8644,4 @@ Video Disk Recorder Revision History
   this version of VDR, you can uncomment the line
   //#define DEPRECATED_GETBITMAP
   in osd.h as a quick workaround. In the long run the plugin will need to be adapted.
+- The -u option now also accepts a numerical user id (suggested by Derek Kelly).

vdr.1

@@ -8,7 +8,7 @@
 .\" License as specified in the file COPYING that comes with the
 .\" vdr distribution.
 .\"
-.\" $Id: vdr.1 4.1 2015/04/18 14:25:07 kls Exp $
+.\" $Id: vdr.1 4.2 2015/04/19 12:39:13 kls Exp $
 .\"
 .TH vdr 1 "19 Feb 2015" "2.2" "Video Disk Recorder"
 .SH NAME
@@ -206,7 +206,7 @@ Run as user \fIuser\fR in case vdr was started as user 'root'.
 Starting vdr as 'root' is necessary if the system time shall
 be set from the transponder data, but for security reasons
 vdr can switch to a lesser privileged user id during normal
-operation.
+operation. \fIuser\fR can be a user name or a numerical id.
 .TP
 .BI \-\-updindex= rec
 Update the index file for the given recording.

vdr.c

@@ -22,7 +22,7 @@
  *
  * The project's page is at http://www.tvdr.de
  *
- * $Id: vdr.c 4.1 2015/04/18 14:22:47 kls Exp $
+ * $Id: vdr.c 4.2 2015/04/19 12:38:12 kls Exp $
  */
 
 #include <getopt.h>
@@ -92,12 +92,12 @@
 
 static int LastSignal = 0;
 
-static bool SetUser(const char *UserName, bool UserDump)
+static bool SetUser(const char *User, bool UserDump)
 {
-  if (UserName) {
-     struct passwd *user = getpwnam(UserName);
+  if (User) {
+     struct passwd *user = isnumber(User) ? getpwuid(atoi(User)) : getpwnam(User);
      if (!user) {
-        fprintf(stderr, "vdr: unknown user: '%s'\n", UserName);
+        fprintf(stderr, "vdr: unknown user: '%s'\n", User);
         return false;
         }
      if (setgid(user->pw_gid) < 0) {
@@ -509,7 +509,7 @@ int main(int argc, char *argv[])
 
   if (VdrUser && geteuid() == 0) {
      StartedAsRoot = true;
-     if (strcmp(VdrUser, "root")) {
+     if (strcmp(VdrUser, "root") && strcmp(VdrUser, "0")) {
         if (!SetKeepCaps(true))
            return 2;
         if (!SetUser(VdrUser, UserDump))
@@ -592,7 +592,7 @@ int main(int argc, char *argv[])
                "                           (default: %s)\n"
                "  -t TTY,   --terminal=TTY controlling tty\n"
                "  -u USER,  --user=USER    run as user USER; only applicable if started as\n"
-               "                           root\n"
+               "                           root; USER can be a user name or a numerical id\n"
                "            --updindex=REC update index for recording REC and exit\n"
                "            --userdump     allow coredumps if -u is given (debugging)\n"
                "  -v DIR,   --video=DIR    use DIR as video directory (default: %s)\n"