[PATCH] uml: umid cleanup

This patch cleans up the umid code:

- The only_if_set argument to get_umid is gone.

- get_umid returns an empty string rather than NULL if there is no umid.

- umid_is_random is gone since its users went away.

- Some printfs were turned into printks because the code runs late enough
  that printk is working.

- Error paths were cleaned up.

- Some functions now return an error and let the caller print the error
  message rather than printing it themselves.  This eliminates the practice of
  passing a pointer to printf or printk in, depending on where in the boot
  process we are.

- Major tidying of not_dead_yet - mostly error path cleanup, plus a comment
  explaining why it doesn't react to errors the way you might expect.

- Calls to os_* interfaces that were moved under os are changed back to
  their native libc forms.

- snprintf, strlcpy, and their bounds-checking friends are used more often,
  replacing by-hand bounds checking in some places.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 2 insertions, 3 deletions

diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 258444e5b9b..c279ee6d89e 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -216,7 +216,7 @@ extern int helper_wait(int pid);
 /* umid.c */
 
 extern int umid_file_name(char *name, char *buf, int len);
-extern int set_umid(char *name, int (*printer)(const char *fmt, ...));
-extern char *get_umid(int only_if_set);
+extern int set_umid(char *name);
+extern char *get_umid(void);
 
 #endif
diff --git a/arch/um/include/user_util.h b/arch/um/include/user_util.h
index bb505e01d99..b9984003e60 100644
--- a/arch/um/include/user_util.h
+++ b/arch/um/include/user_util.h
@@ -64,7 +64,6 @@ extern void setup_machinename(char *machine_out);
 extern void setup_hostinfo(void);
 extern void do_exec(int old_pid, int new_pid);
 extern void tracer_panic(char *msg, ...);
-extern char *get_umid(int only_if_set);
 extern void do_longjmp(void *p, int val);
 extern int detach(int pid, int sig);
 extern int attach(int pid);