Ticket #7832: 36_setgroups_too

File 36_setgroups_too, 1.8 KB (added by superm1@…, 11 years ago)

follow on patch to setgroups() as well

Line 
1Also setgroups before setting gid/pid/home
2
3Author: Mario Limonciello <superm1@ubuntu.com>
4
5Bug: <url in upstream bugtracker>
6--- mythtv-0.23.0~trunk23567.orig/programs/mythbackend/main.cpp
7+++ mythtv-0.23.0~trunk23567/programs/mythbackend/main.cpp
8@@ -7,6 +7,7 @@
9 #include <libgen.h>
10 #include <signal.h>
11 #include <pwd.h>
12+#include <grp.h>
13 
14 #include "mythconfig.h"
15 #if CONFIG_DARWIN
16@@ -878,6 +879,33 @@ int main(int argc, char **argv)
17         }
18         else if (!user_id && user_info)
19         {
20+            int ngroups = 1;
21+            gid_t *groups;
22+            groups = (gid_t*) malloc(ngroups * sizeof (gid_t));
23+            if (groups == NULL)
24+            {
25+                VERBOSE(VB_IMPORTANT,
26+                        QString("Error allocating memory for %1 groups.").arg(ngroups));
27+                return BACKEND_EXIT_PERMISSIONS_ERROR;
28+            }
29+            if (getgrouplist(user_info->pw_name, user_info->pw_gid, groups, &ngroups) == -1)
30+            {
31+                free(groups);
32+                groups = (gid_t*) malloc(ngroups * sizeof (gid_t));
33+                if (groups == NULL)
34+                {
35+                    VERBOSE(VB_IMPORTANT,
36+                            QString("Error allocating memory for %1 groups.").arg(ngroups));
37+                    return BACKEND_EXIT_PERMISSIONS_ERROR;
38+                }
39+                getgrouplist(user_info->pw_name, user_info->pw_gid, groups, &ngroups);
40+            }
41+            free(groups);
42+            if (setgroups(sizeof(groups), groups) == -1)
43+            {
44+                VERBOSE(VB_IMPORTANT, "Error setting groups.");
45+                return BACKEND_EXIT_PERMISSIONS_ERROR;
46+            }
47             if (setenv("HOME", user_info->pw_dir,1) == -1)
48             {
49                 VERBOSE(VB_IMPORTANT, "Error setting home directory.");