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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/os-Linux/tty.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/um/os-Linux/tty.c')
-rw-r--r--arch/um/os-Linux/tty.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/um/os-Linux/tty.c b/arch/um/os-Linux/tty.c
new file mode 100644
index 000000000000..4cfdd18ea1ef
--- /dev/null
+++ b/arch/um/os-Linux/tty.c
@@ -0,0 +1,61 @@
1/*
2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
4 */
5
6#include <stdlib.h>
7#include <errno.h>
8#include "os.h"
9#include "user.h"
10#include "kern_util.h"
11
12struct grantpt_info {
13 int fd;
14 int res;
15 int err;
16};
17
18static void grantpt_cb(void *arg)
19{
20 struct grantpt_info *info = arg;
21
22 info->res = grantpt(info->fd);
23 info->err = errno;
24}
25
26int get_pty(void)
27{
28 struct grantpt_info info;
29 int fd;
30
31 fd = os_open_file("/dev/ptmx", of_rdwr(OPENFLAGS()), 0);
32 if(fd < 0){
33 printk("get_pty : Couldn't open /dev/ptmx - err = %d\n", -fd);
34 return(fd);
35 }
36
37 info.fd = fd;
38 initial_thread_cb(grantpt_cb, &info);
39
40 if(info.res < 0){
41 printk("get_pty : Couldn't grant pty - errno = %d\n",
42 -info.err);
43 return(-1);
44 }
45 if(unlockpt(fd) < 0){
46 printk("get_pty : Couldn't unlock pty - errno = %d\n", errno);
47 return(-1);
48 }
49 return(fd);
50}
51
52/*
53 * Overrides for Emacs so that we follow Linus's tabbing style.
54 * Emacs will notice this stuff at the end of the file and automatically
55 * adjust the settings for this buffer only. This must remain at the end
56 * of the file.
57 * ---------------------------------------------------------------------------
58 * Local variables:
59 * c-file-style: "linux"
60 * End:
61 */