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-rw-r--r--toys/posix/id.c156
1 files changed, 76 insertions, 80 deletions
diff --git a/toys/posix/id.c b/toys/posix/id.c
index 523d4f3a..0cdd2b0c 100644
--- a/toys/posix/id.c
+++ b/toys/posix/id.c
@@ -1,6 +1,4 @@
-/* vi: set sw=4 ts=4:
- *
- * id.c - print real and effective user and group IDs
+/* id.c - print real and effective user and group IDs
*
* Copyright 2012 Sony Network Entertainment, Inc.
*
@@ -11,18 +9,18 @@
USE_ID(NEWTOY(id, "nGgru", TOYFLAG_BIN))
config ID
- bool "id"
- default y
- help
- usage: id [-nGgru]
-
- Print user and group ID.
-
- -n print names instead of numeric IDs (to be used with -Ggu)
- -G Show only the group IDs
- -g Show only the effective group ID
- -r Show real ID instead of effective ID
- -u Show only the effective user ID
+ bool "id"
+ default y
+ help
+ usage: id [-nGgru]
+
+ Print user and group ID.
+
+ -n print names instead of numeric IDs (to be used with -Ggu)
+ -G Show only the group IDs
+ -g Show only the effective group ID
+ -r Show real ID instead of effective ID
+ -u Show only the effective user ID
*/
#define FOR_id
@@ -30,85 +28,83 @@ config ID
static void s_or_u(char *s, unsigned u, int done)
{
- if (toys.optflags & FLAG_n) printf("%s", s);
- else printf("%u", u);
- if (done) {
- xputc('\n');
- exit(0);
- }
+ if (toys.optflags & FLAG_n) printf("%s", s);
+ else printf("%u", u);
+ if (done) {
+ xputc('\n');
+ exit(0);
+ }
}
static void showid(char *header, unsigned u, char *s)
{
- printf("%s%u(%s)", header, u, s);
+ printf("%s%u(%s)", header, u, s);
}
struct passwd *xgetpwuid(uid_t uid)
{
- struct passwd *pwd = getpwuid(uid);
- if (!pwd) error_exit(NULL);
- return pwd;
+ struct passwd *pwd = getpwuid(uid);
+ if (!pwd) error_exit(NULL);
+ return pwd;
}
struct group *xgetgrgid(gid_t gid)
{
- struct group *group = getgrgid(gid);
- if (!group) error_exit(NULL);
- return group;
+ struct group *group = getgrgid(gid);
+ if (!group) error_exit(NULL);
+ return group;
}
void id_main(void)
{
- int flags = toys.optflags, i, ngroups;
- struct passwd *pw;
- struct group *grp;
- uid_t uid = getuid(), euid = geteuid();
- gid_t gid = getgid(), egid = getegid(), *groups;
-
- /* check if a username is given */
- if (*toys.optargs) {
- if (!(pw = getpwnam(*toys.optargs)))
- error_exit("no such user '%s'", *toys.optargs);
- uid = euid = pw->pw_uid;
- gid = egid = pw->pw_gid;
- }
-
- i = toys.optflags & FLAG_r;
- pw = xgetpwuid(i ? uid : euid);
- if (flags & FLAG_u) s_or_u(pw->pw_name, pw->pw_uid, 1);
-
- grp = xgetgrgid(i ? gid : egid);
- if (flags & FLAG_g) s_or_u(grp->gr_name, grp->gr_gid, 1);
-
- if (!(flags & FLAG_G)) {
- showid("uid=", pw->pw_uid, pw->pw_name);
- showid(" gid=", grp->gr_gid, grp->gr_name);
-
- if (!i) {
- if (uid != euid) {
- pw = xgetpwuid(euid);
- showid(" euid=", pw->pw_uid, pw->pw_name);
- }
- if (gid != egid) {
- grp = xgetgrgid(egid);
- showid(" egid=", grp->gr_gid, grp->gr_name);
- }
- }
-
- showid(" groups=", grp->gr_gid, grp->gr_name);
- }
-
-
- groups = (gid_t *)toybuf;
- if (0 >= (ngroups = getgroups(sizeof(toybuf)/sizeof(gid_t), groups)))
- perror_exit(0);
-
- for (i = 0; i < ngroups; i++) {
- xputc(' ');
- if (!(grp = getgrgid(groups[i]))) perror_msg(0);
- else if (flags & FLAG_G)
- s_or_u(grp->gr_name, grp->gr_gid, 0);
- else if (grp->gr_gid != egid) showid("", grp->gr_gid, grp->gr_name);
- }
- xputc('\n');
+ int flags = toys.optflags, i, ngroups;
+ struct passwd *pw;
+ struct group *grp;
+ uid_t uid = getuid(), euid = geteuid();
+ gid_t gid = getgid(), egid = getegid(), *groups;
+
+ // check if a username is given
+ if (*toys.optargs) {
+ if (!(pw = getpwnam(*toys.optargs)))
+ error_exit("no such user '%s'", *toys.optargs);
+ uid = euid = pw->pw_uid;
+ gid = egid = pw->pw_gid;
+ }
+
+ i = toys.optflags & FLAG_r;
+ pw = xgetpwuid(i ? uid : euid);
+ if (flags & FLAG_u) s_or_u(pw->pw_name, pw->pw_uid, 1);
+
+ grp = xgetgrgid(i ? gid : egid);
+ if (flags & FLAG_g) s_or_u(grp->gr_name, grp->gr_gid, 1);
+
+ if (!(flags & FLAG_G)) {
+ showid("uid=", pw->pw_uid, pw->pw_name);
+ showid(" gid=", grp->gr_gid, grp->gr_name);
+
+ if (!i) {
+ if (uid != euid) {
+ pw = xgetpwuid(euid);
+ showid(" euid=", pw->pw_uid, pw->pw_name);
+ }
+ if (gid != egid) {
+ grp = xgetgrgid(egid);
+ showid(" egid=", grp->gr_gid, grp->gr_name);
+ }
+ }
+
+ showid(" groups=", grp->gr_gid, grp->gr_name);
+ }
+
+ groups = (gid_t *)toybuf;
+ if (0 >= (ngroups = getgroups(sizeof(toybuf)/sizeof(gid_t), groups)))
+ perror_exit(0);
+
+ for (i = 0; i < ngroups; i++) {
+ xputc(' ');
+ if (!(grp = getgrgid(groups[i]))) perror_msg(0);
+ else if (flags & FLAG_G) s_or_u(grp->gr_name, grp->gr_gid, 0);
+ else if (grp->gr_gid != egid) showid("", grp->gr_gid, grp->gr_name);
+ }
+ xputc('\n');
}