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shadow/src/new_subid_range.c

62 lines
1.4 KiB

/* SPDX-License-Identifier: BSD-3-Clause */
#include <stdio.h>
#include <unistd.h>
#include "subid.h"
#include "stdlib.h"
#include "prototypes.h"
#include "shadowlog.h"
/* Test program for the subid creation routine */
const char *Prog;
static void usage(void)
{
fprintf(stderr, "Usage: %s [-g] [-n] user count\n", Prog);
fprintf(stderr, " Find a subuid (or with -g, subgid) range for user\n");
fprintf(stderr, " If -n is given, a new range will be created even if one exists\n");
fprintf(stderr, " count defaults to 65536\n");
exit(EXIT_FAILURE);
}
int main(int argc, char *argv[])
{
int c;
struct subordinate_range range;
bool makenew = false; // reuse existing by default
bool group = false; // get subuids by default
bool ok;
Prog = Basename (argv[0]);
log_set_progname(Prog);
log_set_logfd(stderr);
while ((c = getopt(argc, argv, "gn")) != EOF) {
switch(c) {
case 'n': makenew = true; break;
case 'g': group = true; break;
default: usage();
}
}
argv = &argv[optind];
argc = argc - optind;
if (argc == 0)
usage();
range.owner = argv[0];
range.start = 0;
range.count = 65536;
if (argc > 1)
range.count = atoi(argv[1]);
if (group)
ok = subid_grant_gid_range(&range, !makenew);
else
ok = subid_grant_uid_range(&range, !makenew);
if (!ok) {
fprintf(stderr, "Failed creating new id range\n");
exit(EXIT_FAILURE);
}
printf("Subuid range %lu:%lu\n", range.start, range.count);
return 0;
}