Perform several small cleanups to the utmpx code.

- Massively reduce BSS usage. Let futx_to_utx() dynamically allocate the
  structure. There is only a very small amount of applications out there
  that needs to use the utmpx database. Wasting 1 KB on unused
  structures makes little sense.

- Just let getutxid() search for matching ut_id's for any *PROCESS-type.
  This makes the code a bit more future-proof.

- Fix a POSIX-mistake: when reading POSIX and the OpenSolaris
  implementation, getutxline() must return USER_PROCESS and
  LOGIN_PROCESS records whose ut_lines match. When reading POSIX, it
  seems LOGIN_PROCESS should not use ut_line at the first place. I have
  reported this issue.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/libc/gen/utxdb.h b/lib/libc/gen/utxdb.h
index ec02013..d9ebc93 100644
--- a/lib/libc/gen/utxdb.h
+++ b/lib/libc/gen/utxdb.h
@@ -56,6 +56,6 @@ struct futx {
 } __packed;
 
 void	utx_to_futx(const struct utmpx *, struct futx *);
-void	futx_to_utx(const struct futx *, struct utmpx *);
+struct utmpx *futx_to_utx(const struct futx *);
 
 #endif /* !_UTXDB_H_ */