vcs.maemo.org Git - cilux/blob - src/platform/linux/cilux.c

   1
   2 #include <sys/types.h>
   3 #include <unistd.h>
   4 #include <pwd.h>
   5 #include <grp.h>
   6
   7 #include <platform.h>
   8 #include <container.h>
   9 #include "version.h"
  10
  11 /* -------------------------------------------------------------------------- */
  12
  13 static void re_exec_as_other();
  14
  15 /* -------------------------------------------------------------------------- */
  16
  17 int main(int argc, char* argv[])
  18 {
  19         c_init(0, cilux_version, cilux_ciux, 0);
  20         re_exec_as_other();
  21         c_run(0);
  22
  23         return 0;
  24 }
  25
  26 void re_exec_as_other()
  27 {
  28         char* other="other";
  29         uid_t uid=0;
  30         gid_t gid=0;
  31         if(getuid()==0){
  32                 struct passwd* pw=getpwnam(other);
  33                 if(!pw){ printf("fail: getpwnam(\"%s\");\n", other); exit(1); }
  34                 uid=pw->pw_uid;
  35                 gid=pw->pw_gid;
  36         }
  37
  38         pid_t pid=fork();
  39         switch(pid){
  40                 case 0:
  41                         break;
  42                 case -1:
  43                         printf("Failed to fork\n");
  44                         exit(1);
  45                 default:
  46                         printf("pid %d\n", pid);
  47                         exit(0);
  48         }
  49         setsid();
  50
  51         if(getuid()==0){
  52                 if(setgroups(0,0)== -1){
  53                         printf("fail: setgroups(0,0)\n");
  54                         exit(1);
  55                 }
  56                 if(setgid(gid)== -1){
  57                         printf("fail: setgid(%d)\n", gid);
  58                         exit(1);
  59                 }
  60                 if(initgroups(other, gid)== -1){
  61                         printf("fail: initgroups(\"%s\",%d)\n", other, gid);
  62                         exit(1);
  63                 }
  64                 if(setuid(uid)== -1){
  65                         printf("fail: setuid(%d)\n", uid);
  66                         exit(1);
  67                 }
  68         }
  69 }
  70
  71 /* -------------------------------------------------------------------------- */
  72
  73