bb3f428c08
When getsebool's main() fails to allocate memory for the boolean names, it returns without freeing variables first, even though other errors do this (with label "out"). This silences a warning reported by clang's static analyzer. Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
114 lines
2.3 KiB
C
114 lines
2.3 KiB
C
#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <getopt.h>
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#include <errno.h>
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#include <string.h>
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#include <selinux/selinux.h>
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static __attribute__ ((__noreturn__)) void usage(const char *progname)
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{
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fprintf(stderr, "usage: %s -a or %s boolean...\n", progname, progname);
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exit(1);
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}
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int main(int argc, char **argv)
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{
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int i, get_all = 0, rc = 0, active, pending, len = 0, opt;
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char **names = NULL;
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while ((opt = getopt(argc, argv, "a")) > 0) {
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switch (opt) {
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case 'a':
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if (argc > 2)
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usage(argv[0]);
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if (is_selinux_enabled() <= 0) {
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fprintf(stderr, "%s: SELinux is disabled\n",
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argv[0]);
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return 1;
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}
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errno = 0;
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rc = security_get_boolean_names(&names, &len);
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if (rc) {
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fprintf(stderr,
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"%s: Unable to get boolean names: %s\n",
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argv[0], strerror(errno));
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return 1;
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}
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if (!len) {
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printf("No booleans\n");
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return 0;
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}
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get_all = 1;
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break;
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default:
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usage(argv[0]);
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}
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}
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if (is_selinux_enabled() <= 0) {
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fprintf(stderr, "%s: SELinux is disabled\n", argv[0]);
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return 1;
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}
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if (!len) {
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if (argc < 2)
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usage(argv[0]);
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len = argc - 1;
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names = calloc(len, sizeof(char *));
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if (!names) {
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fprintf(stderr, "%s: out of memory\n", argv[0]);
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return 2;
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}
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for (i = 0; i < len; i++) {
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names[i] = strdup(argv[i + 1]);
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if (!names[i]) {
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fprintf(stderr, "%s: out of memory\n",
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argv[0]);
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rc = 2;
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goto out;
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}
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}
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}
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for (i = 0; i < len; i++) {
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active = security_get_boolean_active(names[i]);
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if (active < 0) {
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if (get_all && errno == EACCES)
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continue;
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fprintf(stderr, "Error getting active value for %s\n",
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names[i]);
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rc = -1;
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goto out;
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}
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pending = security_get_boolean_pending(names[i]);
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if (pending < 0) {
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fprintf(stderr, "Error getting pending value for %s\n",
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names[i]);
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rc = -1;
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goto out;
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}
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char *alt_name = selinux_boolean_sub(names[i]);
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if (! alt_name) {
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perror("Out of memory\n");
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rc = -1;
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goto out;
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}
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if (pending != active) {
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printf("%s --> %s pending: %s\n", alt_name,
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(active ? "on" : "off"),
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(pending ? "on" : "off"));
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} else {
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printf("%s --> %s\n", alt_name,
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(active ? "on" : "off"));
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}
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free(alt_name);
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}
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out:
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for (i = 0; i < len; i++)
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free(names[i]);
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free(names);
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return rc;
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}
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