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/* vi: set sw=4 ts=4:
*
* id.c - print real and effective user and group IDs
*
* Copyright 2012 Sony Network Entertainment, Inc.
*
* by Tim Bird <tim.bird@am.sony.com>
*
* See http://www.opengroup.org/onlinepubs/009695399/utilities/id.html
USE_ID(NEWTOY(id, "gru", TOYFLAG_BIN))
config ID
bool "id"
default n
help
usage: id [-gru]
Print user and group ID.
-g Show only the effective group ID
-r Show real ID instead of effective ID
-u Show only the effective user ID
*/
#include "toys.h"
#define FLAG_g (1<<2)
#define FLAG_r (1<<1)
#define FLAG_u 1
void id_main(void)
{
int flags = toys.optflags;
uid_t uid;
gid_t gid;
/* show effective, unless user specifies real */
uid = geteuid();
gid = getegid();
if (flags & FLAG_r) {
uid = getuid();
gid = getgid();
}
if (flags & FLAG_u) {
printf("%d\n", uid);
return;
}
if (flags & FLAG_g) {
printf("%d\n", gid);
return;
}
printf("%d %d\n", uid, gid);
}
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