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Check return value of ftruncate(). Some versions of gcc give

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warnings if I don't.
This commit is contained in:
pooka 2012-11-14 09:22:58 +00:00
parent 856537a70d
commit 2b783d7193
1 changed files with 8 additions and 4 deletions
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12
lib/librumpuser/rumpuser.c
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@ -1,4 +1,4 @@
/* $NetBSD: rumpuser.c,v 1.21 2012/10/10 11:15:57 pooka Exp $ */ /* $NetBSD: rumpuser.c,v 1.22 2012/11/14 09:22:58 pooka Exp $ */
/* /*
* Copyright (c) 2007-2010 Antti Kantee. All Rights Reserved. * Copyright (c) 2007-2010 Antti Kantee. All Rights Reserved.
@ -28,7 +28,7 @@
#include "rumpuser_port.h" #include "rumpuser_port.h"
#if !defined(lint) #if !defined(lint)
__RCSID("$NetBSD: rumpuser.c,v 1.21 2012/10/10 11:15:57 pooka Exp $"); __RCSID("$NetBSD: rumpuser.c,v 1.22 2012/11/14 09:22:58 pooka Exp $");
#endif /* !lint */ #endif /* !lint */
#include <sys/ioctl.h> #include <sys/ioctl.h>
@ -284,8 +284,12 @@ rumpuser_filemmap(int fd, off_t offset, size_t len, int flags, int *error)
void *rv; void *rv;
int mmflags, prot; int mmflags, prot;
if (flags & RUMPUSER_FILEMMAP_TRUNCATE) if (flags & RUMPUSER_FILEMMAP_TRUNCATE) {
ftruncate(fd, offset + len); if (ftruncate(fd, offset + len) == -1) {
seterror(errno);
return NULL;
}
}
mmflags = MAP_FILE; mmflags = MAP_FILE;
if (flags & RUMPUSER_FILEMMAP_SHARED) if (flags & RUMPUSER_FILEMMAP_SHARED)