Red Bear OS
1b3e94a20d
From release 0.1.0 pre-patched archive. This includes all Red Bear modifications previously maintained as patches in local/patches/relibc/.
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include "test_helpers.h"
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int main(void) {
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int sv[2];
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pid_t pid;
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char buf[64];
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const char *parent_msg = "ping";
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const char *child_msg = "pong";
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int status = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
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ERROR_IF(socketpair, status, == -1);
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pid = fork();
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ERROR_IF(fork, pid, == -1);
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if (pid == 0) {
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close(sv[0]);
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memset(buf, 0, sizeof(buf));
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ssize_t n = recv(sv[1], buf, sizeof(buf), 0);
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ERROR_IF(recv, n, == -1);
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printf("child: received '%s'\n", buf);
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n = recv(sv[1], buf, sizeof(buf), 0);
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if (n != 0) {
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fprintf(
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stderr,
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"FAILURE: Expected EOF (0) after parent shutdown, got %ld\n",
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(long)n);
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exit(EXIT_FAILURE);
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}
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printf("child: verified EOF from parent (SHUT_WR worked)\n");
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status = send(sv[1], child_msg, 5, 0);
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ERROR_IF(send, status, == -1);
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close(sv[1]);
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exit(0);
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} else {
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close(sv[1]);
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status = send(sv[0], parent_msg, 5, 0);
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ERROR_IF(send, status, == -1);
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status = shutdown(sv[0], SHUT_WR);
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ERROR_IF(shutdown, status, == -1);
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printf("parent: shutdown(SHUT_WR) performed\n");
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memset(buf, 0, sizeof(buf));
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ssize_t n = recv(sv[0], buf, sizeof(buf), 0);
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ERROR_IF(recv, n, == -1);
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if (n == 0) {
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fprintf(stderr,
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"FAILURE: Parent received EOF, but expected 'pong'\n");
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exit(EXIT_FAILURE);
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}
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printf("parent: received '%s' (Shutdown allows reading)\n", buf);
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status = send(sv[0], "garbage", 7, MSG_NOSIGNAL);
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if (status != -1 || errno != EPIPE) {
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fprintf(stderr,
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"WARNING: Expected EPIPE on write after shutdown, got "
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"status %d\n",
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status);
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} else {
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printf("parent: verified EPIPE on write after shutdown\n");
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}
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close(sv[0]);
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wait(NULL);
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}
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return 0;
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}
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