ptrace supports threads

Fujitsu: POSTK_DEBUG_TEMP_FIX_53, POSTK_DEBUG_ARCH_DEP_44 Refs: #771, #1179, #1143 Change-Id: Ie17ece6864f0eeb0c0e550f4e369abb77980a0d0
2018-09-14 14:50:36 +09:00
parent 28c434a230
commit ed1edb152b
17 changed files with 2513 additions and 575 deletions
--- a/test/issues/771+1179+1143/C771T033.c
+++ b/test/issues/771+1179+1143/C771T033.c
@ -0,0 +1,175 @@
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <pthread.h>
+#include <errno.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/syscall.h>
+#include <sys/mman.h>
+#include <sys/socket.h>
+#include <sys/ptrace.h>
+#include <sys/user.h>
+#include <sys/wait.h>
+
+volatile char *m;
+volatile int *x;
+
+void *
+thr(void *arg)
+{
+	int rc;
+	pid_t tid;
+	char *mm;
+
+	tid = syscall(SYS_gettid);
+	*x = tid;
+	while (*x == tid);
+
+	errno = 0;
+	mm = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
+		  -1, 0);
+	fprintf(stderr, "mmap m=%p errno=%d\n", mm, errno);
+	fflush(stderr);
+	memset(mm, '\0', 4096);
+	m = mm;
+	*mm = '1';
+	while (*m);
+	rc = munmap(mm, 4096);
+	fprintf(stderr, "munmap rc=%d, errno=%d\n", rc, errno);
+	fflush(stderr);
+	return NULL;
+}
+
+int
+main(int argc, char **argv)
+{
+	pthread_t th;
+	int rc;
+	pid_t tid;
+	pid_t pid;
+	int sig;
+	int st;
+
+	x = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS,
+		 -1, 0);
+
+	if (x == (void *)-1) {
+		perror("mmap");
+		exit(1);
+	}
+	*x = 0;
+
+	rc = pthread_create(&th, NULL, thr, NULL);
+	if (rc) {
+		fprintf(stderr, "pthread_create: %d\n", rc);
+		exit(1);
+	}
+
+	while (*x == 0);
+	tid = *x;
+	fprintf(stderr, "tid=%d\n", tid);
+
+	if ((pid = fork()) == 0) {
+		if (ptrace(PTRACE_ATTACH, tid, 0, 0) == -1) {
+			fprintf(stderr, "*** C771T033 *** ATTACH NG err=%d\n",
+				errno);
+			exit(1);
+		}
+		rc = waitpid(-1, &st, __WALL);
+		if (rc == tid) {
+			fprintf(stderr, "*** C771T033 *** ATTACH OK\n");
+		}
+		else {
+			fprintf(stderr, "*** C771T033 *** ATTACH NG rc=%d\n",
+				rc);
+			exit(1);
+		}
+		if (ptrace(PTRACE_SETOPTIONS, tid, 0, PTRACE_O_TRACESYSGOOD) ==
+		    -1) {
+			fprintf(stderr, "PTRACE_SETOPTIONS errno=%d\n", errno);
+			exit(1);
+		}
+		*x = 0;
+		sig = 0;
+		for (;;) {
+			rc = ptrace(PTRACE_SYSCALL, tid, 0, sig);
+			if (rc == -1) {
+				fprintf(stderr,
+					"*** C771T034 *** SYSCALL NG err=%d\n",
+					errno);
+				exit(1);
+			}
+			rc = waitpid(-1, &st, __WALL);
+			if (rc == tid) {
+				fprintf(stderr,
+					"*** C771T034 *** SYSCALL OK\n");
+			}
+			else {
+				fprintf(stderr,
+					"*** C771T034 *** SYSCALL NG rc=%d\n",
+					rc);
+				exit(1);
+			}
+
+			if (WIFEXITED(st) || WIFSIGNALED(st)) {
+				fprintf(stderr, "thread terminated %08x\n", st);
+				exit(1);
+			}
+			if (!WIFSTOPPED(st)) {
+				fprintf(stderr, "warning: st=%08x\n", st);
+				continue;
+			}
+			if (WSTOPSIG(st) & 0x80) { // syscall
+				struct user_regs_struct arg;
+				int num;
+				long ret;
+
+				if (ptrace(PTRACE_GETREGS, tid, NULL, &arg) ==
+				    -1) {
+				}
+				num = arg.orig_rax;
+				ret = arg.rax;
+				if (ret == -ENOSYS) {
+					fprintf(stderr,
+						"syscall enter n=%d\n", num);
+				}
+				else {
+					fprintf(stderr,
+						"syscall return n=%d r=%ld\n",
+						num, ret);
+					if (ptrace(PTRACE_DETACH, tid, NULL,
+						   NULL) == -1) {
+						fprintf(stderr,
+							"*** C771T035 DETACH NG"
+							"err=%d\n", errno);
+						exit(1);
+					}
+					else {
+						fprintf(stderr,
+							"*** C771T035 DETACH OK"
+							"\n");
+						exit(0);
+					}
+				}
+			}
+			else { // signal
+				sig = WSTOPSIG(st) & 0x7f;
+			}
+		}
+	}
+
+	while (!m);
+	fprintf(stderr, "update m=%p\n", m);
+	fflush(stderr);
+	while (!*m);
+	fprintf(stderr, "update *m=%c\n", *m);
+	fflush(stderr);
+	*m = '\0';
+	waitpid(pid, &st, 0);
+	pthread_join(th, NULL);
+	fprintf(stderr, "main done\n");
+	fflush(stderr);
+	exit(0);
+}