mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
#include <alloca.h>
|
|
#include <grp.h>
|
|
#include <pwd.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
|
|
extern "C" int main(int, char**);
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
(void)argc;
|
|
(void)argv;
|
|
uid_t uid = getuid();
|
|
gid_t gid = getgid();
|
|
|
|
struct passwd* pw = getpwuid(uid);
|
|
struct group* gr = getgrgid(gid);
|
|
|
|
printf("uid=%u(%s), gid=%u(%s)", uid, pw ? pw->pw_name : "n/a", gid, gr ? gr->gr_name : "n/a");
|
|
|
|
int extra_gid_count = getgroups(0, nullptr);
|
|
if (extra_gid_count) {
|
|
auto* extra_gids = (gid_t*)alloca(extra_gid_count * sizeof(gid_t));
|
|
int rc = getgroups(extra_gid_count, extra_gids);
|
|
if (rc < 0) {
|
|
perror("\ngetgroups");
|
|
return 1;
|
|
}
|
|
printf(", groups=");
|
|
for (int g = 0; g < extra_gid_count; ++g) {
|
|
auto* gr = getgrgid(extra_gids[g]);
|
|
if (gr)
|
|
printf("%u(%s)", extra_gids[g], gr->gr_name);
|
|
else
|
|
printf("%u", extra_gids[g]);
|
|
if (g != extra_gid_count - 1)
|
|
printf(",");
|
|
}
|
|
}
|
|
printf("\n");
|
|
return 0;
|
|
}
|