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

   1
   2 /* -------------------------------------------------------------------------- */
   3
   4 #include <kernelplat.h>
   5 #include <container.h>
   6 #include <version.h>
   7
   8 /* -------------------------------------------------------------------------- */
   9
  10 static void cilux_terminate(void);
  11 static void re_exec_as_other();
  12
  13 /* -------------------------------------------------------------------------- */
  14
  15 int main(int argc, char* argv[])
  16 {
  17     c_init(cilux_version, cilux_ciux, cilux_terminate);
  18
  19     re_exec_as_other();
  20     c_run(0);
  21
  22     return 0;
  23 }
  24
  25 /* -------------------------------------------------------------------------- */
  26
  27 void re_exec_as_other()
  28 {
  29     char* other="other";
  30     uid_t uid=0;
  31     gid_t gid=0;
  32     if(getuid()==0){
  33         struct passwd* pw=getpwnam(other);
  34         if(!pw){ printf("fail: getpwnam(\"%s\");\n", other); exit(1); }
  35         uid=pw->pw_uid;
  36         gid=pw->pw_gid;
  37     }
  38
  39     pid_t pid=fork();
  40     switch(pid){
  41         case 0:
  42             break;
  43         case -1:
  44             printf("Failed to fork\n");
  45             exit(1);
  46         default:
  47             printf("pid %d\n", pid);
  48             exit(0);
  49     }
  50     setsid();
  51
  52     if(getuid()==0){
  53         if(setgroups(0,0)== -1){
  54             printf("fail: setgroups(0,0)\n");
  55             exit(1);
  56         }
  57         if(setgid(gid)== -1){
  58             printf("fail: setgid(%d)\n", gid);
  59             exit(1);
  60         }
  61         if(initgroups(other, gid)== -1){
  62             printf("fail: initgroups(\"%s\",%d)\n", other, gid);
  63             exit(1);
  64         }
  65         if(setuid(uid)== -1){
  66             printf("fail: setuid(%d)\n", uid);
  67             exit(1);
  68         }
  69     }
  70 }
  71
  72 void cilux_terminate(void)
  73 {
  74     c_running(0);
  75     exit(0);
  76 }
  77
  78 /* -------------------------------------------------------------------------- */
  79
  80