LingaoM commented on code in PR #19515:
URL: https://github.com/apache/nuttx/pull/19515#discussion_r3643667748
##########
arch/sim/src/sim/posix/sim_hostuart.c:
##########
@@ -130,6 +131,71 @@ int host_uart_open(const char *pathname)
return fd;
}
+/****************************************************************************
+ * Name: host_uart_openpty
+ ****************************************************************************/
+
+int host_uart_openpty(const char *name)
+{
+#ifdef CONFIG_HOST_LINUX
+ unsigned int ptyno;
+ char msg[128];
+ char slave[64];
+ int lock = 0;
+ int oflags;
+ int ret;
+ int fd;
+
+ oflags = O_RDWR | O_NOCTTY | O_NONBLOCK;
+#ifdef O_CLOEXEC
+ oflags |= O_CLOEXEC;
+#endif
+ fd = open("/dev/ptmx", oflags);
+ if (fd < 0)
+ {
+ return -errno;
+ }
+
+ ret = ioctl(fd, TIOCGPTN, &ptyno);
+ if (ret < 0)
+ {
+ ret = -errno;
+ goto errout;
+ }
+
+ ret = ioctl(fd, TIOCSPTLCK, &lock);
+ if (ret < 0)
+ {
+ ret = -errno;
+ goto errout;
+ }
+
+ ret = snprintf(slave, sizeof(slave), "/dev/pts/%u", ptyno);
+ if (ret < 0 || ret >= (int)sizeof(slave))
+ {
+ ret = -ENAMETOOLONG;
+ goto errout;
+ }
+
+ setrawmode(fd);
+ ret = snprintf(msg, sizeof(msg), "%s connected to pseudotty: %s\n",
+ name, slave);
+ if (ret > 0)
+ {
+ write(STDOUT_FILENO, msg, ret);
Review Comment:
Yep, changed.
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