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Fix locking.

This commit is contained in:
ad 2008-04-23 13:34:44 +00:00
parent 6bf00a454d
commit e0b56ca8f5
1 changed files with 7 additions and 3 deletions
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10
sys/compat/netbsd32/netbsd32_fs.c
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@ -1,4 +1,4 @@
/* $NetBSD: netbsd32_fs.c,v 1.51 2008/03/21 21:54:58 ad Exp $ */
/* $NetBSD: netbsd32_fs.c,v 1.52 2008/04/23 13:34:44 ad Exp $ */
/*
* Copyright (c) 1998, 2001 Matthew R. Green
@ -29,7 +29,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: netbsd32_fs.c,v 1.51 2008/03/21 21:54:58 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: netbsd32_fs.c,v 1.52 2008/04/23 13:34:44 ad Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -718,6 +718,7 @@ netbsd32___getcwd(struct lwp *l, const struct netbsd32___getcwd_args *uap, regis
char *bp, *bend;
int len = (int)SCARG(uap, length);
int lenused;
struct cwdinfo *cwdi;
if (len > MAXPATHLEN*4)
len = MAXPATHLEN*4;
@ -738,8 +739,11 @@ netbsd32___getcwd(struct lwp *l, const struct netbsd32___getcwd_args *uap, regis
* limit it to N/2 vnodes for an N byte buffer.
*/
#define GETCWD_CHECK_ACCESS 0x0001
error = getcwd_common (p->p_cwdi->cwdi_cdir, NULL, &bp, path, len/2,
cwdi = p->p_cwdi;
rw_enter(&cwdi->cwdi_lock, RW_READER);
error = getcwd_common (cwdi->cwdi_cdir, NULL, &bp, path, len/2,
GETCWD_CHECK_ACCESS, l);
rw_exit(&cwdi->cwdi_lock);
if (error)
goto out;