e16f5350d4
Include linux/kernel.h wherever simple_strtoul is used. This kills a compile warning in stderr_console.c and potential ones in the other files. This also fixes a bunch of style violations in exitcode.c. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#include "linux/kernel.h"
|
|
#include "linux/init.h"
|
|
#include "linux/ctype.h"
|
|
#include "linux/proc_fs.h"
|
|
#include "asm/uaccess.h"
|
|
|
|
/* If read and write race, the read will still atomically read a valid
|
|
* value.
|
|
*/
|
|
int uml_exitcode = 0;
|
|
|
|
static int read_proc_exitcode(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
int len, val;
|
|
|
|
/* Save uml_exitcode in a local so that we don't need to guarantee
|
|
* that sprintf accesses it atomically.
|
|
*/
|
|
val = uml_exitcode;
|
|
len = sprintf(page, "%d\n", val);
|
|
len -= off;
|
|
if(len <= off+count)
|
|
*eof = 1;
|
|
*start = page + off;
|
|
if(len > count)
|
|
len = count;
|
|
if(len < 0)
|
|
len = 0;
|
|
return len;
|
|
}
|
|
|
|
static int write_proc_exitcode(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
char *end, buf[sizeof("nnnnn\0")];
|
|
int tmp;
|
|
|
|
if(copy_from_user(buf, buffer, count))
|
|
return -EFAULT;
|
|
|
|
tmp = simple_strtol(buf, &end, 0);
|
|
if((*end != '\0') && !isspace(*end))
|
|
return -EINVAL;
|
|
|
|
uml_exitcode = tmp;
|
|
return count;
|
|
}
|
|
|
|
static int make_proc_exitcode(void)
|
|
{
|
|
struct proc_dir_entry *ent;
|
|
|
|
ent = create_proc_entry("exitcode", 0600, &proc_root);
|
|
if(ent == NULL){
|
|
printk(KERN_WARNING "make_proc_exitcode : Failed to register "
|
|
"/proc/exitcode\n");
|
|
return 0;
|
|
}
|
|
|
|
ent->read_proc = read_proc_exitcode;
|
|
ent->write_proc = write_proc_exitcode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
__initcall(make_proc_exitcode);
|