source: MondoRescue/branches/2.2.5/mindi-busybox/selinux/matchpathcon.c@ 1765

/* matchpathcon  -  get the default security context for the specified
 *                  path from the file contexts configuration.
 *                  based on libselinux-1.32
 * Port to busybox: KaiGai Kohei <kaigai@kaigai.gr.jp>
 *
 */
#include "libbb.h"

static int print_matchpathcon(char *path, int noprint)
{
    char *buf;
    int rc = matchpathcon(path, 0, &buf);
    if (rc < 0) {
        bb_perror_msg("matchpathcon(%s) failed", path);
        return 1;
    }
    if (!noprint)
        printf("%s\t%s\n", path, buf);
    else
        printf("%s\n", buf);

    freecon(buf);
    return 0;
}

#define OPT_NOT_PRINT   (1<<0)  /* -n */
#define OPT_NOT_TRANS   (1<<1)  /* -N */
#define OPT_FCONTEXT    (1<<2)  /* -f */
#define OPT_PREFIX      (1<<3)  /* -p */
#define OPT_VERIFY      (1<<4)  /* -V */

int matchpathcon_main(int argc, char **argv);
int matchpathcon_main(int argc, char **argv)
{
    int error = 0;
    unsigned opts;
    char *fcontext, *prefix, *path;

    opt_complementary = "-1" /* at least one param reqd */
        ":?:f--p:p--f"; /* mutually exclusive */
    opts = getopt32(argv, "nNf:p:V", &fcontext, &prefix);
    argv += optind;

    if (opts & OPT_NOT_TRANS) {
        set_matchpathcon_flags(MATCHPATHCON_NOTRANS);
    }
    if (opts & OPT_FCONTEXT) {
        if (matchpathcon_init(fcontext))
            bb_perror_msg_and_die("error while processing %s", fcontext);
    }
    if (opts & OPT_PREFIX) {
        if (matchpathcon_init_prefix(NULL, prefix))
            bb_perror_msg_and_die("error while processing %s", prefix);
    }

    while ((path = *argv++) != NULL) {
        security_context_t con;
        int rc;

        if (!(opts & OPT_VERIFY)) {
            error += print_matchpathcon(path, opts & OPT_NOT_PRINT);
            continue;
        }

        if (selinux_file_context_verify(path, 0)) {
            printf("%s verified\n", path);
            continue;
        }

        if (opts & OPT_NOT_TRANS)
            rc = lgetfilecon_raw(path, &con);
        else
            rc = lgetfilecon(path, &con);

        if (rc >= 0) {
            printf("%s has context %s, should be ", path, con);
            error += print_matchpathcon(path, 1);
            freecon(con);
            continue;
        }
        printf("actual context unknown: %s, should be ", strerror(errno));
        error += print_matchpathcon(path, 1);
    }
    matchpathcon_fini();
    return error;
}