diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/kernel/exitcode.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/kernel/exitcode.c')
-rw-r--r-- | arch/um/kernel/exitcode.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/um/kernel/exitcode.c b/arch/um/kernel/exitcode.c new file mode 100644 index 00000000000..0ea87f24b36 --- /dev/null +++ b/arch/um/kernel/exitcode.c @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#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; + + len = sprintf(page, "%d\n", uml_exitcode); + 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("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); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ |