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

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