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id: code shrink

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function                                             old     new   delta
id_main                                              494     462     -32
This commit is contained in:
Denis Vlasenko 2008-09-13 12:51:10 +00:00
parent 0ee1cb0084
commit 4f3209b9d4
2 changed files with 21 additions and 20 deletions
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37
coreutils/id.c
View File

@ -45,7 +45,7 @@ int id_main(int argc UNUSED_PARAM, char **argv)
uid_t uid;
gid_t gid;
gid_t *groups;
int grp;
int n;
unsigned long flags;
short status;
#if ENABLE_SELINUX
@ -72,17 +72,17 @@ int id_main(int argc UNUSED_PARAM, char **argv)
/* in this case PRINT_REAL is the same */
}
grp = getgroups(0, 0);
groups = (gid_t *)xmalloc(sizeof(gid_t) * grp);
getgroups(grp, (gid_t *)groups);
n = getgroups(0, NULL);
groups = xmalloc(sizeof(groups[0]) * n);
getgroups(n, groups);
if (flags & (JUST_ALL_GROUPS)) {
while (grp--) {
if (flags & JUST_ALL_GROUPS) {
while (n--) {
if (flags & NAME_NOT_NUMBER)
printf("%s", bb_getgrgid(NULL, 0, *groups++));
else
printf("%d", *groups++);
bb_putchar((grp > 0) ? ' ' : '\n');
printf("%d", (int) *groups++);
bb_putchar((n > 0) ? ' ' : '\n');
}
/* exit */
fflush_stdout_and_exit(EXIT_SUCCESS);
@ -105,7 +105,7 @@ int id_main(int argc UNUSED_PARAM, char **argv)
#if ENABLE_SELINUX
if (flags & JUST_CONTEXT) {
selinux_or_die();
if (argc - optind == 1) {
if (argv[optind]) {
bb_error_msg_and_die("user name can't be passed with -Z");
}
@ -122,16 +122,17 @@ int id_main(int argc UNUSED_PARAM, char **argv)
/* Print full info like GNU id */
/* bb_getpwuid(0) doesn't exit on failure (returns NULL) */
status = printf_full(uid, bb_getpwuid(NULL, 0, uid), "uid=");
bb_putchar(' ');
status |= printf_full(gid, bb_getgrgid(NULL, 0, gid), "gid=");
printf(" groups=");
while (grp--) {
status |= printf_full(*groups, bb_getgrgid(NULL, 0, *groups), "");
if (grp > 0)
bb_putchar(',');
groups++;
status |= printf_full(gid, bb_getgrgid(NULL, 0, gid), " gid=");
{
const char *msg = " groups=";
while (n--) {
status |= printf_full(*groups, bb_getgrgid(NULL, 0, *groups), msg);
msg = ",";
groups++;
}
}
/* Don't free groups */
/* we leak groups vector... */
#if ENABLE_SELINUX
if (is_selinux_enabled()) {
security_context_t mysid;

4
include/usage.h
View File

@ -1602,9 +1602,9 @@
USE_SELINUX( \
"\n -Z Print the security context" \
) \
"\n -G Print all group IDs" \
"\n -g Print group ID" \
"\n -u Print user ID" \
"\n -g Print group ID" \
"\n -G Print supplementary group IDs" \
"\n -n Print name instead of a number" \
"\n -r Print real user ID instead of effective ID" \