diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/proc/kmsg.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 'fs/proc/kmsg.c')
-rw-r--r-- | fs/proc/kmsg.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/fs/proc/kmsg.c b/fs/proc/kmsg.c new file mode 100644 index 000000000000..10d37bf25206 --- /dev/null +++ b/fs/proc/kmsg.c | |||
@@ -0,0 +1,55 @@ | |||
1 | /* | ||
2 | * linux/fs/proc/kmsg.c | ||
3 | * | ||
4 | * Copyright (C) 1992 by Linus Torvalds | ||
5 | * | ||
6 | */ | ||
7 | |||
8 | #include <linux/types.h> | ||
9 | #include <linux/errno.h> | ||
10 | #include <linux/time.h> | ||
11 | #include <linux/kernel.h> | ||
12 | #include <linux/poll.h> | ||
13 | #include <linux/fs.h> | ||
14 | |||
15 | #include <asm/uaccess.h> | ||
16 | #include <asm/io.h> | ||
17 | |||
18 | extern wait_queue_head_t log_wait; | ||
19 | |||
20 | extern int do_syslog(int type, char __user *bug, int count); | ||
21 | |||
22 | static int kmsg_open(struct inode * inode, struct file * file) | ||
23 | { | ||
24 | return do_syslog(1,NULL,0); | ||
25 | } | ||
26 | |||
27 | static int kmsg_release(struct inode * inode, struct file * file) | ||
28 | { | ||
29 | (void) do_syslog(0,NULL,0); | ||
30 | return 0; | ||
31 | } | ||
32 | |||
33 | static ssize_t kmsg_read(struct file *file, char __user *buf, | ||
34 | size_t count, loff_t *ppos) | ||
35 | { | ||
36 | if ((file->f_flags & O_NONBLOCK) && !do_syslog(9, NULL, 0)) | ||
37 | return -EAGAIN; | ||
38 | return do_syslog(2, buf, count); | ||
39 | } | ||
40 | |||
41 | static unsigned int kmsg_poll(struct file *file, poll_table *wait) | ||
42 | { | ||
43 | poll_wait(file, &log_wait, wait); | ||
44 | if (do_syslog(9, NULL, 0)) | ||
45 | return POLLIN | POLLRDNORM; | ||
46 | return 0; | ||
47 | } | ||
48 | |||
49 | |||
50 | struct file_operations proc_kmsg_operations = { | ||
51 | .read = kmsg_read, | ||
52 | .poll = kmsg_poll, | ||
53 | .open = kmsg_open, | ||
54 | .release = kmsg_release, | ||
55 | }; | ||