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-rw-r--r--src/terminal.c53
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);
+}