[hackers] [ubase] Add initial version of getty || sin

From: <git_AT_suckless.org>
Date: Mon, 10 Feb 2014 13:16:04 +0100

commit adc7ff7d04fff043c814d50a097633e9640e9550
Author: sin <sin_AT_2f30.org>
Date: Mon Feb 10 12:12:50 2014 +0000

    Add initial version of getty

diff --git a/Makefile b/Makefile
index 0c8cb72..5b165c8 100644
--- a/Makefile
+++ b/Makefile
_AT_@ -26,6 +26,7 @@ SRC = \
         eject.c \
         fallocate.c \
         free.c \
+ getty.c \
         halt.c \
         insmod.c \
         lsmod.c \
diff --git a/TODO b/TODO
index 7502efc..64d6a71 100644
--- a/TODO
+++ b/TODO
_AT_@ -13,7 +13,6 @@ Tools
  * mkswap [-L]
  * passwd
  * login
- * getty
 
 Other
 =====
diff --git a/getty.c b/getty.c
new file mode 100644
index 0000000..8a80808
--- /dev/null
+++ b/getty.c
_AT_@ -0,0 +1,80 @@
+/* See LICENSE file for copyright and license details. */
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include "util.h"
+
+static void
+usage(void)
+{
+ eprintf("usage: %s [tty] [term]
", argv0);
+}
+
+static char *tty = "/dev/tty1";
+static char *defaultterm = "TERM=linux";
+
+int
+main(int argc, char *argv[])
+{
+ int fd;
+ struct sigaction sa;
+ char term[128];
+
+ ARGBEGIN {
+ default:
+ usage();
+ } ARGEND;
+
+ if (argc > 2)
+ usage();
+
+ strlcpy(term, defaultterm, sizeof(term));
+ if (argc > 0) {
+ tty = argv[0];
+ if (argc > 1) {
+ strlcpy(term, "TERM=", sizeof(term));
+ strlcat(term, argv[1], sizeof(term));
+ }
+ }
+
+ sa.sa_handler = SIG_IGN;
+ sa.sa_flags = 0;
+ sigemptyset(&sa.sa_mask);
+ sigaction(SIGHUP, &sa, NULL);
+
+ putenv(term);
+
+ setsid();
+
+ fd = open(tty, O_RDWR);
+ if (fd < 0)
+ eprintf("open %s:", tty);
+ if (isatty(fd) == 0)
+ eprintf("%s is not a tty
", tty);
+ if (ioctl(fd, TIOCSCTTY, (void *)1) == 0) {
+ if (vhangup() < 0)
+ eprintf("vhangup:");
+ } else {
+ fprintf(stderr, "could not set controlling tty
");
+ }
+ close(fd);
+ fd = open(tty, O_RDWR);
+ if (fd < 0)
+ eprintf("open %s:", tty);
+ dup2(fd, STDIN_FILENO);
+ dup2(fd, STDOUT_FILENO);
+ dup2(fd, STDERR_FILENO);
+
+ sa.sa_handler = SIG_DFL;
+ sa.sa_flags = 0;
+ sigemptyset(&sa.sa_mask);
+ sigaction(SIGHUP, &sa, NULL);
+
+ putchar('
');
+ return execvp("/bin/login", (char *[]){ "login", NULL });
+}
Received on Mon Feb 10 2014 - 13:16:04 CET