1 files changed, 53 insertions, 0 deletions
diff --git a/src/terminal.c b/src/terminal.c
new file mode 100644
index 0000000..2954669
--- /dev/null
+++ b/src/terminal.c
@@ -0,0 +1,53 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+#if defined(__OpenBSD__) || defined(__APPLE__)
+#include <util.h>
+#elif defined(__FreeBSD__)
+#include <libutil.h>
+#else
+#include <pty.h>
+#endif
+
+#include "utils.h"
+
+pid_t pty_fork(int *pty, const char *file, char *const argv[], const char *term) {
+  pid_t pid = forkpty(pty, NULL, NULL, NULL);
+
+  if (pid < 0) {
+    return pid;
+  } else if (pid == 0) {
+    setenv("TERM", term, true);
+    int ret = execvp(file, argv);
+    if (ret < 0) {
+      perror("execvp failed\n");
+      _exit(-errno);
+    }
+  }
+
+  // set the file descriptor non blocking
+  int flags = fcntl(*pty, F_GETFL);
+  if (flags != -1) {
+    fcntl(*pty, F_SETFD, flags | O_NONBLOCK);
+  }
+  // set the file descriptor close-on-exec
+  fd_set_cloexec(*pty);
+
+  return pid;
+}
+
+int pty_resize(int pty, int cols, int rows) {
+  struct winsize size;
+
+  size.ws_col = (unsigned short)cols;
+  size.ws_row = (unsigned short)rows;
+  size.ws_xpixel = 0;
+  size.ws_ypixel = 0;
+
+  return ioctl(pty, TIOCSWINSZ, &size);
+}