| 1 | #define _GNU_SOURCE |
| 2 | #include <grp.h> |
| 3 | #include <limits.h> |
| 4 | |
| 5 | int initgroups(const char *user, gid_t gid) |
| 6 | { |
| 7 | gid_t groups[NGROUPS_MAX]; |
| 8 | int count = NGROUPS_MAX; |
| 9 | if (getgrouplist(user, gid, groups, &count) < 0) return -1; |
| 10 | return setgroups(count, groups); |
| 11 | } |