232ff757d4
When building libselinux, clang reports the following warning:
selinux_check_access.c:8:1: error: function 'usage' could be
declared with attribute 'noreturn' [-Werror,-Wmissing-noreturn]
While at it, make progname const.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.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 auditdata] scon tcon class perm\n"
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"\nWhere:\n\t"
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"-a Optional information added to audit message.\n",
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progname);
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exit(1);
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}
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static int cb_auditinfo(void *auditdata,
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__attribute__((unused))security_class_t class,
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char *msgbuf, size_t msgbufsize)
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{
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return snprintf(msgbuf, msgbufsize, "%s", (char *)auditdata);
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}
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int main(int argc, char **argv)
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{
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int opt, rc;
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char *audit_msg = NULL;
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while ((opt = getopt(argc, argv, "a:")) != -1) {
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switch (opt) {
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case 'a':
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audit_msg = optarg;
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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 ((argc - optind) != 4)
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usage(argv[0]);
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if (audit_msg)
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selinux_set_callback(SELINUX_CB_AUDIT,
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(union selinux_callback)cb_auditinfo);
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rc = selinux_check_access(argv[optind], argv[optind + 1],
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argv[optind + 2], argv[optind + 3],
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audit_msg);
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if (rc < 0)
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perror("selinux_check_access");
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return rc;
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}
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