Subject: kern/16294: sys___getcwd problem
To: None <gnats-bugs@gnats.netbsd.org>
From: None <Mihai.Chelaru@ballantines.acasa.ro>
List: netbsd-bugs
Date: 04/10/2002 23:29:06
>Number: 16294
>Category: kern
>Synopsis: sys___getcwd may be used only in userland
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Wed Apr 10 13:29:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: Mihai Chelaru
>Release: NetBSD 1.5ZC
>Organization:
RomTeleNet
>Environment:
System: NetBSD ballantines.acasa.ro 1.5ZC NetBSD 1.5ZC (Kefren) #0: Wed Apr 10 23:07:37 EEST 2002 kefren@ballantines.acasa.ro:/usr/src/sys/arch/i386/compile/Kefren i386
Architecture: i386
Machine: i386
>Description:
sys___getcwd may be used only from userland. kernel modules cannot access it because of the copyout function used inside it (that always returns EFAULT).
>How-To-Repeat:
>Fix:
Apply the following patch:
--- kern/vfs_getcwd.c Wed Apr 10 23:19:57 2002
+++ kern/vfs_getcwd.c Wed Apr 10 23:20:40 2002
@@ -597,7 +597,8 @@
lenused = bend - bp;
*retval = lenused;
/* put the result into user buffer */
- error = copyout(bp, SCARG(uap, bufp), lenused);
+ error = 0;
+ bcopy (bp, SCARG(uap, bufp), lenused);
out:
free(path, M_TEMP);
>Release-Note:
>Audit-Trail:
>Unformatted: