Add forkpty, ptsname and posix_openpt

2024-01-17 03:05:50 +00:00
parent faadbc3d70
commit 9d8094baee
10 changed files with 291 additions and 7 deletions
@@ -0,0 +1,90 @@
+/* Test for ptsname/ptsname_r.
+   Copyright (C) 2014-2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#define _GNU_SOURCE
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define DEV_TTY		"/dev/tty"
+#define PTSNAME_EINVAL	"./ptsname-einval"
+
+int do_single_test(int fd, char * buf, size_t buflen, int expected_err) {
+
+    int ret = ptsname_r(fd, buf, buflen);
+    int err = errno;
+
+    if (expected_err == 0) {
+        if (ret != 0) {
+            printf("ptsname_r: expected: return = 0\n");
+            printf("           got: return = %d, errno = %d (%s)\n",
+                ret, err, strerror(err));
+            return 1;
+        }
+    } else {
+        if (ret == 0 || errno != expected_err) {
+            printf("ptsname_r: expected: return = %d, errno = %d (%s)\n",
+                -1, expected_err, strerror(expected_err));
+            printf("           got: return = %d, errno = %d (%s)\n",
+                ret, err, strerror(err));
+            return 1;
+        }
+    }
+
+    return 0;
+}
+
+int main(void) {
+    char buf[512] = {0};
+    int result = 0;
+    errno = 0;
+    /* Tests with a real PTS master.  */
+    int fd = posix_openpt(O_RDWR);
+    if (fd != -1) {
+        result |= do_single_test(fd, buf, sizeof(buf), 0);
+        result |= do_single_test(fd, buf, 1, ERANGE);
+        close(fd);
+    } else
+        printf("posix_openpt (O_RDWR) failed\nerrno %d (%s)\n",
+            errno, strerror(errno));
+
+    // TODO: open(DEV_TTY, O_RDONLY) gives error on CI 
+    // /* Test with a terminal device which is not a PTS master.  */
+    // fd = open(DEV_TTY, O_RDONLY);
+    // if (fd != -1) {
+    //     result |= do_single_test(fd, buf, sizeof(buf), ENOTTY);
+    //     close(fd);
+    // } else
+    //     printf("open (\"%s\", O_RDWR) failed\nerrno %d (%s)\n",
+    //         DEV_TTY, errno, strerror(errno));
+
+    /* Test with a file.  */
+    fd = open(PTSNAME_EINVAL, O_RDWR | O_CREAT, 0600);
+    if (fd != -1) {
+        result |= do_single_test(fd, buf, sizeof(buf), ENOTTY);
+        close(fd);
+        unlink(PTSNAME_EINVAL);
+    } else
+        printf("open (\"%s\", O_RDWR | OCREAT) failed\nerrno %d (%s)\n",
+            PTSNAME_EINVAL, errno, strerror(errno));
+
+    return result;
+}