172 lines
3.3 KiB
C
172 lines
3.3 KiB
C
#define _GNU_SOURCE
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <pthread.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/syscall.h>
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#include <sys/mman.h>
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#include <signal.h>
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int flag1;
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pthread_mutex_t mutex1;
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pthread_cond_t cond1;
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int flag2;
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pthread_mutex_t mutex2;
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pthread_cond_t cond2;
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char *m;
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int sigst;
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pthread_t thr;
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void
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sigsegv(int s)
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{
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if (sigst == 1) {
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fprintf(stderr, "CT03007 mprotect OK (SIGSEGV)\n");
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pthread_mutex_lock(&mutex2);
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flag2 = 1;
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pthread_cond_signal(&cond2);
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pthread_mutex_unlock(&mutex2);
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pthread_join(thr, NULL);
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fprintf(stderr, "CT03009 pthread_join OK\n");
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fprintf(stderr, "CT03010 END\n");
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exit(0);
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}
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printf("BAD SIGSEGV\n");
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exit(1);
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}
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void *
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util_thread(void *arg)
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{
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int rc;
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rc = syscall(732);
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if (rc == -1)
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fprintf(stderr, "CT03003 get_system OK\n");
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else {
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fprintf(stderr, "CT03003 get_system NG get_system=%d\n", rc);
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exit(1);
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}
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errno = 0;
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m = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
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if (m != (void *)-1) {
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fprintf(stderr, "CT03004 mmap OK\n");
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}
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else {
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fprintf(stderr, "CT03004 mmap NG errno=%d\n", errno);
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exit(1);
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}
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strcpy(m, "mmap OK");
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pthread_mutex_lock(&mutex1);
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flag1 = 1;
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pthread_cond_signal(&cond1);
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pthread_mutex_unlock(&mutex1);
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pthread_mutex_lock(&mutex2);
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while (!flag2) {
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pthread_cond_wait(&cond2, &mutex2);
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}
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flag2 = 0;
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pthread_mutex_unlock(&mutex2);
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rc = mprotect(m, 4096, PROT_READ);
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if (rc == 0) {
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fprintf(stderr, "CT03006 mprotect OK\n");
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}
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else {
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fprintf(stderr, "CT03006 mprotect NG errno=%d\n", errno);
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exit(1);
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}
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pthread_mutex_lock(&mutex1);
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flag1 = 1;
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pthread_cond_signal(&cond1);
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pthread_mutex_unlock(&mutex1);
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pthread_mutex_lock(&mutex2);
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while (!flag2) {
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pthread_cond_wait(&cond2, &mutex2);
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}
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flag2 = 0;
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pthread_mutex_unlock(&mutex2);
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rc = munmap(m, 4096);
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if (rc == 0) {
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fprintf(stderr, "CT03008 munmap OK\n");
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}
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else {
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fprintf(stderr, "CT03008 munmap NG errno=%d\n", errno);
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exit(1);
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}
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return NULL;
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}
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int
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main(int argc, char **argv)
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{
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int rc;
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signal(SIGSEGV, sigsegv);
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pthread_mutex_init(&mutex1, NULL);
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pthread_cond_init(&cond1, NULL);
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pthread_mutex_init(&mutex2, NULL);
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pthread_cond_init(&cond2, NULL);
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fprintf(stderr, "CT03001 mprotect START\n");
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rc = syscall(731, 1, NULL);
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if (rc) {
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fprintf(stderr, "util_indicate_clone rc=%d, errno=%d\n", rc, errno);
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fflush(stderr);
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}
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rc = pthread_create(&thr, NULL, util_thread, NULL);
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if(rc){
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fprintf(stderr, "pthread_create: %d\n", rc);
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exit(1);
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}
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fprintf(stderr, "CT03002 pthread_create OK\n");
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pthread_mutex_lock(&mutex1);
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while (!flag1) {
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pthread_cond_wait(&cond1, &mutex1);
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}
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flag1 = 0;
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pthread_mutex_unlock(&mutex1);
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fprintf(stderr, "CT03005 %s\n", m);
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pthread_mutex_lock(&mutex2);
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flag2 = 1;
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pthread_cond_signal(&cond2);
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pthread_mutex_unlock(&mutex2);
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pthread_mutex_lock(&mutex1);
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while (!flag1) {
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pthread_cond_wait(&cond1, &mutex1);
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}
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flag1 = 0;
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pthread_mutex_unlock(&mutex1);
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sigst = 1;
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strcpy(m, "mprotect NG");
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fprintf(stderr, "%s\n", m);
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fprintf(stderr, "CT03007 mprotect NG\n");
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pthread_mutex_lock(&mutex2);
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flag2 = 1;
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pthread_cond_signal(&cond2);
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pthread_mutex_unlock(&mutex2);
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pthread_join(thr, NULL);
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fprintf(stderr, "CT03009 pthread_join OK\n");
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fprintf(stderr, "CT03010 END\n");
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exit(0);
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}
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