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added error check.

This commit is contained in:
uch 2009-04-26 12:41:59 +00:00
parent 2cae64a195
commit c519d37fde
1 changed files with 6 additions and 4 deletions
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10
sys/fs/sysvbfs/bfs.c
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@ -1,4 +1,4 @@
/* $NetBSD: bfs.c,v 1.11 2008/04/28 20:24:02 martin Exp $ */
/* $NetBSD: bfs.c,v 1.12 2009/04/26 12:41:59 uch Exp $ */
/*-
* Copyright (c) 2004 The NetBSD Foundation, Inc.
@ -31,7 +31,7 @@
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bfs.c,v 1.11 2008/04/28 20:24:02 martin Exp $");
__KERNEL_RCSID(0, "$NetBSD: bfs.c,v 1.12 2009/04/26 12:41:59 uch Exp $");
#define BFS_DEBUG
#include <sys/param.h>
@ -256,10 +256,12 @@ bfs_file_read(const struct bfs *bfs, const char *fname, void *buf, size_t bufsz,
p = buf;
n = end - start;
bfs->io->read_n(bfs->io, p, start, n);
if (!bfs->io->read_n(bfs->io, p, start, n))
return EIO;
/* last sector */
n *= DEV_BSIZE;
bfs->io->read(bfs->io, tmpbuf, end);
if (!bfs->io->read(bfs->io, tmpbuf, end))
return EIO;
memcpy(p + n, tmpbuf, sz - n);
if (read_size)