1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <unistd.h> 4 #include <sys/types.h> 5 #include <pwd.h> 6 #include <grp.h> 7 8 #ifdef HAVE_SELINUX 9 #include <selinux/selinux.h> 10 #endif 11 12 static void print_uid(uid_t uid) 13 { 14 struct passwd *pw = getpwuid(uid); 15 16 if (pw) { 17 printf("%d(%s)", uid, pw->pw_name); 18 } else { 19 printf("%d",uid); 20 } 21 } 22 23 static void print_gid(gid_t gid) 24 { 25 struct group *gr = getgrgid(gid); 26 if (gr) { 27 printf("%d(%s)", gid, gr->gr_name); 28 } else { 29 printf("%d",gid); 30 } 31 } 32 33 int id_main(int argc, char **argv) 34 { 35 gid_t list[64]; 36 int n, max; 37 #ifdef HAVE_SELINUX 38 char *secctx; 39 #endif 40 41 max = getgroups(64, list); 42 if (max < 0) max = 0; 43 44 printf("uid="); 45 print_uid(getuid()); 46 printf(" gid="); 47 print_gid(getgid()); 48 if (max) { 49 printf(" groups="); 50 print_gid(list[0]); 51 for(n = 1; n < max; n++) { 52 printf(","); 53 print_gid(list[n]); 54 } 55 } 56 #ifdef HAVE_SELINUX 57 if (getcon(&secctx) == 0) { 58 printf(" context=%s", secctx); 59 free(secctx); 60 } 61 #endif 62 printf("\n"); 63 return 0; 64 } 65
