X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fpipecmd%2Ftest%2Frun-preserve.c;fp=ccan%2Fpipecmd%2Ftest%2Frun-preserve.c;h=c9e7cd96bac0a5530f08b4f699b3a8a8273b2097;hp=0000000000000000000000000000000000000000;hb=d3d2242ba8d975f8d7ddaa0348953dfd6f45ffce;hpb=440efa555b08324386fa15488cefaed68a791d6e

diff --git a/ccan/pipecmd/test/run-preserve.c b/ccan/pipecmd/test/run-preserve.c
new file mode 100644
index 00000000..c9e7cd96
--- /dev/null
+++ b/ccan/pipecmd/test/run-preserve.c
@@ -0,0 +1,98 @@
+#include <ccan/pipecmd/pipecmd.h>
+/* Include the C files directly. */
+#include <ccan/pipecmd/pipecmd.c>
+#include <ccan/tap/tap.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main(int argc, char *argv[])
+{
+	pid_t child;
+	int fd, oldfd, status;
+	char buf[5] = "test";
+	char template[] = "/tmp/run-preserve.XXXXXX";
+
+	/* We call ourselves, to test pipe. */
+	if (argc == 2) {
+		if (strcmp(argv[1], "out") == 0) {
+			if (write(STDOUT_FILENO, buf, sizeof(buf)) != sizeof(buf))
+				exit(2);
+		} else if (strcmp(argv[1], "in") == 0) {
+			if (read(STDIN_FILENO, buf, sizeof(buf)) != sizeof(buf))
+				exit(3);
+			if (memcmp(buf, "test", sizeof(buf)) != 0)
+				exit(4);
+		} else if (strcmp(argv[1], "err") == 0) {
+			if (write(STDERR_FILENO, buf, sizeof(buf)) != sizeof(buf))
+				exit(5);
+		} else
+			abort();
+		exit(0);
+	}
+
+	/* This is how many tests you plan to run */
+	plan_tests(25);
+
+	/* Preserve stdin test. */
+	fd = mkstemp(template);
+	ok1(write(fd, buf, sizeof(buf)) == sizeof(buf));
+	ok1(fd >= 0);
+	ok1(dup2(fd, STDIN_FILENO) == STDIN_FILENO);
+	ok1(lseek(STDIN_FILENO, 0, SEEK_SET) == 0);
+	child = pipecmd(&pipecmd_preserve, NULL, NULL, argv[0], "in", NULL);
+	if (!ok1(child > 0))
+		exit(1);
+	ok1(waitpid(child, &status, 0) == child);
+	ok1(WIFEXITED(status));
+	ok1(WEXITSTATUS(status) == 0);
+
+	close(STDIN_FILENO);
+
+	/* Preserve stdout test */
+	fd = open(template, O_WRONLY|O_TRUNC);
+	ok1(fd >= 0);
+	oldfd = dup(STDOUT_FILENO);
+	/* Can't use OK after this, since we mug stdout */
+	if (dup2(fd, STDOUT_FILENO) != STDOUT_FILENO)
+		exit(1);
+	child = pipecmd(NULL, &pipecmd_preserve, NULL, argv[0], "out", NULL);
+	if (child == -1)
+		exit(1);
+	/* Restore stdout */
+	dup2(oldfd, STDOUT_FILENO);
+	close(oldfd);
+	ok1(waitpid(child, &status, 0) == child);
+	ok1(WIFEXITED(status));
+	ok1(WEXITSTATUS(status) == 0);
+
+	fd = open(template, O_RDONLY);
+	ok1(read(fd, buf, sizeof(buf)) == sizeof(buf));
+	ok1(close(fd) == 0);
+	ok1(memcmp(buf, "test", sizeof(buf)) == 0);
+
+	/* Preserve stderr test. */
+	fd = open(template, O_WRONLY|O_TRUNC);
+	ok1(fd >= 0);
+	oldfd = dup(STDERR_FILENO);
+	ok1(dup2(fd, STDERR_FILENO) == STDERR_FILENO);
+	child = pipecmd(NULL, NULL, &pipecmd_preserve, argv[0], "err", NULL);
+	if (!ok1(child > 0))
+		exit(1);
+
+	/* Restore stderr. */
+	ok1(dup2(oldfd, STDERR_FILENO));
+	ok1(waitpid(child, &status, 0) == child);
+	ok1(WIFEXITED(status));
+	ok1(WEXITSTATUS(status) == 0);
+	close(oldfd);
+
+	fd = open(template, O_RDONLY);
+	ok1(read(fd, buf, sizeof(buf)) == sizeof(buf));
+	ok1(close(fd) == 0);
+	ok1(memcmp(buf, "test", sizeof(buf)) == 0);
+	unlink(template);
+
+	/* This exits depending on whether all tests passed */
+	return exit_status();
+}