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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/proc/kmsg.c | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-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 0000000..10d37bf --- /dev/null +++ b/fs/proc/kmsg.c @@ -0,0 +1,55 @@ +/* + * linux/fs/proc/kmsg.c + * + * Copyright (C) 1992 by Linus Torvalds + * + */ + +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/time.h> +#include <linux/kernel.h> +#include <linux/poll.h> +#include <linux/fs.h> + +#include <asm/uaccess.h> +#include <asm/io.h> + +extern wait_queue_head_t log_wait; + +extern int do_syslog(int type, char __user *bug, int count); + +static int kmsg_open(struct inode * inode, struct file * file) +{ + return do_syslog(1,NULL,0); +} + +static int kmsg_release(struct inode * inode, struct file * file) +{ + (void) do_syslog(0,NULL,0); + return 0; +} + +static ssize_t kmsg_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + if ((file->f_flags & O_NONBLOCK) && !do_syslog(9, NULL, 0)) + return -EAGAIN; + return do_syslog(2, buf, count); +} + +static unsigned int kmsg_poll(struct file *file, poll_table *wait) +{ + poll_wait(file, &log_wait, wait); + if (do_syslog(9, NULL, 0)) + return POLLIN | POLLRDNORM; + return 0; +} + + +struct file_operations proc_kmsg_operations = { + .read = kmsg_read, + .poll = kmsg_poll, + .open = kmsg_open, + .release = kmsg_release, +}; |