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Diffstat (limited to '')
| -rw-r--r-- | tests/helpers/test_sigreceive.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/tests/helpers/test_sigreceive.c b/tests/helpers/test_sigreceive.c new file mode 100644 index 0000000..12b563a --- /dev/null +++ b/tests/helpers/test_sigreceive.c @@ -0,0 +1,181 @@ +/* + * test_sigreceive - wait for signal and exit with value of it + * + * Written by Sami Kerola <kerolasa@iki.fi> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <err.h> +#include <getopt.h> +#include <pwd.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/select.h> +#include <sys/types.h> +#include <unistd.h> + +#include "strutils.h" + +#define TEST_SIGRECEIVE_FAILURE 0 + +static void __attribute__((__noreturn__)) usage(FILE *out) +{ + fputs("Usage: test_sigreceive [-s|--setuid <login|uid>]\n", out); + exit(TEST_SIGRECEIVE_FAILURE); +} + +static __attribute__((__noreturn__)) +void exiter(int signo __attribute__((__unused__)), + siginfo_t *info, + void *context __attribute__((__unused__))) +{ + int ret = info->si_signo; + + if (info->si_code == SI_QUEUE && info->si_value.sival_int != 0) + ret = info->si_value.sival_int; + _exit(ret); +} + +int main(int argc, char **argv) +{ + struct sigaction sigact; + fd_set rfds; + struct timeval timeout; + char *user = NULL; + int c; + + static const struct option longopts[] = { + {"setuid", required_argument, NULL, 's'}, + {NULL, 0, NULL, 0} + }; + + while ((c = getopt_long(argc, argv, "s:h", longopts, NULL)) != -1) + switch (c) { + case 's': + user = optarg; + break; + case 'h': + usage(stdout); + default: + usage(stderr); + } + + if (user) { + struct passwd *pw; + uid_t uid; + + pw = getpwnam(user); + if (pw) + uid = pw->pw_uid; + else + uid = strtou32_or_err(user, "failed to parse uid"); + if (setuid(uid) < 0) + err(TEST_SIGRECEIVE_FAILURE, "setuid failed"); + } + + sigemptyset(&sigact.sa_mask); + sigact.sa_flags = SA_SIGINFO; + sigact.sa_sigaction = exiter; + timeout.tv_sec = 5; + timeout.tv_usec = 0; + + sigaction(SIGINT, &sigact, NULL); + sigaction(SIGQUIT, &sigact, NULL); + sigaction(SIGILL, &sigact, NULL); +#ifdef SIGTRAP + sigaction(SIGTRAP, &sigact, NULL); +#endif + sigaction(SIGABRT, &sigact, NULL); +#ifdef SIGIOT + sigaction(SIGIOT, &sigact, NULL); +#endif +#ifdef SIGEMT + sigaction(SIGEMT, &sigact, NULL); +#endif +#ifdef SIGBUS + sigaction(SIGBUS, &sigact, NULL); +#endif + sigaction(SIGFPE, &sigact, NULL); + sigaction(SIGUSR1, &sigact, NULL); + sigaction(SIGSEGV, &sigact, NULL); + sigaction(SIGUSR2, &sigact, NULL); + sigaction(SIGPIPE, &sigact, NULL); + sigaction(SIGALRM, &sigact, NULL); + sigaction(SIGTERM, &sigact, NULL); +#ifdef SIGSTKFLT + sigaction(SIGSTKFLT, &sigact, NULL); +#endif + sigaction(SIGCHLD, &sigact, NULL); +#ifdef SIGCLD + sigaction(SIGCLD, &sigact, NULL); +#endif + sigaction(SIGCONT, &sigact, NULL); + sigaction(SIGTSTP, &sigact, NULL); + sigaction(SIGTTIN, &sigact, NULL); + sigaction(SIGTTOU, &sigact, NULL); +#ifdef SIGURG + sigaction(SIGURG, &sigact, NULL); +#endif +#ifdef SIGXCPU + sigaction(SIGXCPU, &sigact, NULL); +#endif +#ifdef SIGXFSZ + sigaction(SIGXFSZ, &sigact, NULL); +#endif +#ifdef SIGVTALRM + sigaction(SIGVTALRM, &sigact, NULL); +#endif +#ifdef SIGPROF + sigaction(SIGPROF, &sigact, NULL); +#endif +#ifdef SIGWINCH + sigaction(SIGWINCH, &sigact, NULL); +#endif +#ifdef SIGIO + sigaction(SIGIO, &sigact, NULL); +#endif +#ifdef SIGPOLL + sigaction(SIGPOLL, &sigact, NULL); +#endif +#ifdef SIGINFO + sigaction(SIGINFO, &sigact, NULL); +#endif +#ifdef SIGLOST + sigaction(SIGLOST, &sigact, NULL); +#endif +#ifdef SIGPWR + sigaction(SIGPWR, &sigact, NULL); +#endif +#ifdef SIGUNUSED + sigaction(SIGUNUSED, &sigact, NULL); +#endif +#ifdef SIGSYS + sigaction(SIGSYS, &sigact, NULL); +#endif +#ifdef SIGRTMIN + sigaction(SIGRTMIN, &sigact, NULL); + sigaction(SIGRTMAX, &sigact, NULL); +#endif + /* Keep SIGHUP last, the bit it flips tells to check script the + * helper is ready to be killed. */ + sigaction(SIGHUP, &sigact, NULL); + + FD_ZERO(&rfds); + FD_SET(STDIN_FILENO, &rfds); + select(0, &rfds, NULL, NULL, &timeout); + + exit(TEST_SIGRECEIVE_FAILURE); +} |