52 lines
913 B
C
52 lines
913 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <pwd.h>
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#include <grp.h>
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static void print_uid(uid_t uid)
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{
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struct passwd *pw = getpwuid(uid);
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if (pw) {
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printf("%d(%s)", uid, pw->pw_name);
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} else {
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printf("%d",uid);
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}
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}
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static void print_gid(gid_t gid)
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{
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struct group *gr = getgrgid(gid);
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if (gr) {
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printf("%d(%s)", gid, gr->gr_name);
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} else {
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printf("%d",gid);
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}
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}
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int id_main(int argc, char **argv)
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{
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gid_t list[64];
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int n, max;
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max = getgroups(64, list);
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if (max < 0) max = 0;
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printf("uid=");
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print_uid(getuid());
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printf(" gid=");
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print_gid(getgid());
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if (max) {
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printf(" groups=");
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print_gid(list[0]);
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for(n = 1; n < max; n++) {
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printf(",");
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print_gid(list[n]);
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}
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}
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printf("\n");
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return 0;
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}
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