Alejandro Colomar
678c2a23ee
atoi(3) easily triggers Undefined Behavior. Replace it by str2[u]l(), which are safe from that, and add type safety too. Reviewed-by: "Serge E. Hallyn" <serge@hallyn.com> Signed-off-by: Alejandro Colomar <alx@kernel.org>
59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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#include <stdio.h>
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#include <unistd.h>
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#include "atoi/str2i.h"
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#include "subid.h"
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#include "stdlib.h"
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#include "prototypes.h"
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#include "shadowlog.h"
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/* Test program for the subid freeing routine */
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static const char Prog[] = "free_subid_range";
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static void usage(void)
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{
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fprintf(stderr, "Usage: %s [-g] user start count\n", Prog);
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fprintf(stderr, " Release a user's subuid (or with -g, subgid) range\n");
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exit(EXIT_FAILURE);
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}
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int main(int argc, char *argv[])
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{
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int c;
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bool ok;
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struct subordinate_range range;
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bool group = false; // get subuids by default
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log_set_progname(Prog);
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log_set_logfd(stderr);
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while ((c = getopt(argc, argv, "g")) != EOF) {
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switch(c) {
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case 'g': group = true; break;
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default: usage();
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}
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}
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argv = &argv[optind];
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argc = argc - optind;
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if (argc < 3)
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usage();
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range.owner = argv[0];
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str2ul(&range.start, argv[1]);
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str2ul(&range.count, argv[2]);
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if (group)
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ok = subid_ungrant_gid_range(&range);
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else
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ok = subid_ungrant_uid_range(&range);
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if (!ok) {
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fprintf(stderr, "Failed freeing id range\n");
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exit(EXIT_FAILURE);
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}
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return 0;
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}
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