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* update for WARNS=1

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* getopt returns -1 not EOF
* fix .Nm usage
This commit is contained in:
lukem 1997-09-15 05:35:37 +00:00
parent 3cb80143db
commit 0965d12ed9
2 changed files with 12 additions and 11 deletions
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8
sbin/mount_null/mount_null.8
View File

@ -1,4 +1,4 @@
.\" $NetBSD: mount_null.8,v 1.4 1996/04/10 20:57:19 thorpej Exp $ .\" $NetBSD: mount_null.8,v 1.5 1997/09/15 05:35:37 lukem Exp $
.\" .\"
.\" Copyright (c) 1992, 1993, 1994 .\" Copyright (c) 1992, 1993, 1994
.\" The Regents of the University of California. All rights reserved. .\" The Regents of the University of California. All rights reserved.
@ -43,13 +43,13 @@
.Nm mount_null .Nm mount_null
.Nd demonstrate the use of a null file system layer .Nd demonstrate the use of a null file system layer
.Sh SYNOPSIS .Sh SYNOPSIS
.Nm mount_null .Nm
.Op Fl o Ar options .Op Fl o Ar options
.Ar target .Ar target
.Ar mount-point .Ar mount-point
.Sh DESCRIPTION .Sh DESCRIPTION
The The
.Nm mount_null .Nm
command creates a command creates a
null layer, duplicating a sub-tree of the file system null layer, duplicating a sub-tree of the file system
name space under another part of the global file system namespace. name space under another part of the global file system namespace.
@ -208,5 +208,5 @@ UCLA Technical Report CSD-910056,
.Em "Stackable Layers: an Architecture for File System Development" . .Em "Stackable Layers: an Architecture for File System Development" .
.Sh HISTORY .Sh HISTORY
The The
.Nm mount_null .Nm
utility first appeared in 4.4BSD. utility first appeared in 4.4BSD.

15
sbin/mount_null/mount_null.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: mount_null.c,v 1.3 1996/04/13 01:31:49 jtc Exp $ */ /* $NetBSD: mount_null.c,v 1.4 1997/09/15 05:35:38 lukem Exp $ */
/* /*
* Copyright (c) 1992, 1993, 1994 * Copyright (c) 1992, 1993, 1994
@ -36,17 +36,17 @@
* SUCH DAMAGE. * SUCH DAMAGE.
*/ */
#include <sys/cdefs.h>
#ifndef lint #ifndef lint
char copyright[] = __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\n\
"@(#) Copyright (c) 1992, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n");
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */ #endif /* not lint */
#ifndef lint #ifndef lint
#if 0 #if 0
static char sccsid[] = "@(#)mount_null.c 8.5 (Berkeley) 3/27/94"; static char sccsid[] = "@(#)mount_null.c 8.5 (Berkeley) 3/27/94";
#else #else
static char rcsid[] = "$NetBSD: mount_null.c,v 1.3 1996/04/13 01:31:49 jtc Exp $"; __RCSID("$NetBSD: mount_null.c,v 1.4 1997/09/15 05:35:38 lukem Exp $");
#endif #endif
#endif /* not lint */ #endif /* not lint */
@ -67,6 +67,7 @@ const struct mntopt mopts[] = {
{ NULL } { NULL }
}; };
int main __P((int, char *[]));
int subdir __P((const char *, const char *)); int subdir __P((const char *, const char *));
void usage __P((void)); void usage __P((void));
@ -80,7 +81,7 @@ main(argc, argv)
char target[MAXPATHLEN]; char target[MAXPATHLEN];
mntflags = 0; mntflags = 0;
while ((ch = getopt(argc, argv, "o:")) != EOF) while ((ch = getopt(argc, argv, "o:")) != -1)
switch(ch) { switch(ch) {
case 'o': case 'o':
getmntopts(optarg, mopts, &mntflags); getmntopts(optarg, mopts, &mntflags);
@ -105,7 +106,7 @@ main(argc, argv)
args.target = target; args.target = target;
if (mount(MOUNT_NULL, argv[1], mntflags, &args)) if (mount(MOUNT_NULL, argv[1], mntflags, &args))
err(1, NULL); err(1, "%s", "");
exit(0); exit(0);
} }