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-rw-r--r--compat/forkpty-aix.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/compat/forkpty-aix.c b/compat/forkpty-aix.c
new file mode 100644
index 00000000..5eba9fd6
--- /dev/null
+++ b/compat/forkpty-aix.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stropts.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "compat.h"
+
+void fatal(const char *, ...);
+void fatalx(const char *, ...);
+
+pid_t
+forkpty(int *master, __unused char *name, struct termios *tio,
+ struct winsize *ws)
+{
+ int slave = -1, fd, pipe_fd[2];
+ char *path, dummy;
+ pid_t pid;
+
+ if (pipe(pipe_fd) == -1)
+ return (-1);
+
+ if ((*master = open("/dev/ptc", O_RDWR|O_NOCTTY)) == -1)
+ goto out;
+
+ if ((path = ttyname(*master)) == NULL)
+ goto out;
+
+ if (name != NULL)
+ strlcpy(name, path, TTY_NAME_MAX);
+
+ if ((slave = open(path, O_RDWR|O_NOCTTY)) == -1)
+ goto out;
+
+ switch (pid = fork()) {
+ case -1:
+ goto out;
+ case 0:
+ close(*master);
+
+ close(pipe_fd[1]);
+ while (read(pipe_fd[0], &dummy, 1) == -1) {
+ if (errno != EINTR)
+ break;
+ }
+ close(pipe_fd[0]);
+
+ fd = open(_PATH_TTY, O_RDWR|O_NOCTTY);
+ if (fd >= 0) {
+ ioctl(fd, TIOCNOTTY, NULL);
+ close(fd);
+ }
+
+ if (setsid() < 0)
+ fatal("setsid");
+
+ fd = open(_PATH_TTY, O_RDWR|O_NOCTTY);
+ if (fd >= 0)
+ fatalx("open succeeded (failed to disconnect)");
+
+ fd = open(path, O_RDWR);
+ if (fd < 0)
+ fatal("open failed");
+ close(fd);
+
+ fd = open("/dev/tty", O_WRONLY);
+ if (fd < 0)
+ fatal("open failed");
+ close(fd);
+
+ if (tio != NULL && tcsetattr(slave, TCSAFLUSH, tio) == -1)
+ fatal("tcsetattr failed");
+ if (ioctl(slave, TIOCSWINSZ, ws) == -1)
+ fatal("ioctl failed");
+
+ dup2(slave, 0);
+ dup2(slave, 1);
+ dup2(slave, 2);
+ if (slave > 2)
+ close(slave);
+
+ return (0);
+ }
+
+ close(slave);
+
+ close(pipe_fd[0]);
+ close(pipe_fd[1]);
+ return (pid);
+
+out:
+ if (*master != -1)
+ close(*master);
+ if (slave != -1)
+ close(slave);
+
+ close(pipe_fd[0]);
+ close(pipe_fd[1]);
+ return (-1);
+}