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fix pread return check in fixsb. caught by dsl

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dbj 2004-04-24 20:48:57 +00:00
parent 41c60f0331
commit 4b198427c0
1 changed files with 4 additions and 4 deletions
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8
distrib/utils/sysinst/disks.c
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@ -1,4 +1,4 @@
/* $NetBSD: disks.c,v 1.77 2004/04/24 20:42:39 dbj Exp $ */
/* $NetBSD: disks.c,v 1.78 2004/04/24 20:48:57 dbj Exp $ */
/*
* Copyright 1997 Piermont Information Systems Inc.
@ -543,7 +543,7 @@ fixsb(const char *disk, int ptn)
int fd;
char diskpath[MAXPATHLEN];
char *prog = "/sbin/fsck_ffs";
int error;
int rval;
static char sblk[SBLOCKSIZE];
struct fs *fs = (struct fs *)sblk;
char *part;
@ -553,9 +553,9 @@ fixsb(const char *disk, int ptn)
free(part);
if (fd == -1)
return;
error = pread(fd, sblk, sizeof sblk, SBLOCK_UFS1);
rval = pread(fd, sblk, sizeof sblk, SBLOCK_UFS1);
close(fd);
if (error)
if (rval != sizeof sblk)
return;
if (fs->fs_magic != FS_UFS1_MAGIC &&