[src/trunk]: src add utmpname()

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9f4cd52521b4
branches:  trunk
changeset: 534510:9f4cd52521b4
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Jul 28 21:45:39 2002 +0000

description:
add utmpname()

diffstat:

 include/utmp.h      |   3 ++-
 lib/libc/gen/utmp.c |  26 +++++++++++++++++++++++---
 2 files changed, 25 insertions(+), 4 deletions(-)

diffs (76 lines):

diff -r 25f0558f018a -r 9f4cd52521b4 include/utmp.h
--- a/include/utmp.h    Sun Jul 28 20:47:57 2002 +0000
+++ b/include/utmp.h    Sun Jul 28 21:45:39 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: utmp.h,v 1.7 2002/07/27 23:57:02 christos Exp $        */
+/*     $NetBSD: utmp.h,v 1.8 2002/07/28 21:45:39 christos Exp $        */
 
 /*
  * Copyright (c) 1988, 1993
@@ -65,6 +65,7 @@
 };
 
 __BEGIN_DECLS
+int utmpname(const char *);
 void setutent(void);
 struct utmp *getutent(void);
 void endutent(void);
diff -r 25f0558f018a -r 9f4cd52521b4 lib/libc/gen/utmp.c
--- a/lib/libc/gen/utmp.c       Sun Jul 28 20:47:57 2002 +0000
+++ b/lib/libc/gen/utmp.c       Sun Jul 28 21:45:39 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: utmp.c,v 1.2 2002/07/28 20:46:43 christos Exp $         */
+/*     $NetBSD: utmp.c,v 1.3 2002/07/28 21:46:03 christos Exp $         */
 
 /*-
  * Copyright (c) 2002 The NetBSD Foundation, Inc.
@@ -38,15 +38,18 @@
 #include <sys/cdefs.h>
 
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: utmp.c,v 1.2 2002/07/28 20:46:43 christos Exp $");
+__RCSID("$NetBSD: utmp.c,v 1.3 2002/07/28 21:46:03 christos Exp $");
 #endif /* LIBC_SCCS and not lint */
 
+#include <sys/types.h>
+#include <sys/param.h>
 #include <stdio.h>
 #include <time.h>
 #include <utmp.h>
 
 static struct utmp utmp;
 static FILE *ut;
+static char utfile[MAXPATHLEN] = _PATH_UTMP;
 
 void
 setutent(void)
@@ -60,7 +63,7 @@
 getutent(void)
 {
        if (ut == NULL) {
-               if ((ut = fopen(_PATH_UTMP, "r")) == NULL)
+               if ((ut = fopen(utfile, "r")) == NULL)
                        return NULL;
        }
        if (fread(&utmp, sizeof(utmp), 1, ut) == 1)
@@ -76,3 +79,20 @@
                ut = NULL;
        }
 }
+
+int
+utmpname(const char *fname)
+{
+       size_t len = strlen(fname);
+
+       if (len >= sizeof(utfile))
+               return 0;
+
+       /* must not end in x! */
+       if (fname[len - 1] == 'x')
+               return 0;
+
+       (void)strcpy(utfile, fname);
+       endutent();
+       return 1;
+}