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fix locking.

This commit is contained in:
yamt 2003-05-02 12:43:01 +00:00
parent 1f81d34aa0
commit 7b589d5ebc
1 changed files with 13 additions and 6 deletions
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19
sys/kern/kern_ktrace.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_ktrace.c,v 1.69 2003/04/03 18:54:16 christos Exp $ */
/* $NetBSD: kern_ktrace.c,v 1.70 2003/05/02 12:43:01 yamt Exp $ */
/*
* Copyright (c) 1989, 1993
@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_ktrace.c,v 1.69 2003/04/03 18:54:16 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_ktrace.c,v 1.70 2003/05/02 12:43:01 yamt Exp $");
#include "opt_ktrace.h"
#include "opt_compat_mach.h"
@ -498,15 +498,22 @@ sys_fktrace(l, v, retval)
struct proc *curp = l->l_proc;
struct file *fp = NULL;
struct filedesc *fdp = curp->p_fd;
int error;
if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
return (EBADF);
if ((fp->f_flag & FWRITE) == 0)
return (EBADF);
FILE_USE(fp);
return ktrace_common(curp, SCARG(uap, ops),
SCARG(uap, facs), SCARG(uap, pid), fp);
if ((fp->f_flag & FWRITE) == 0)
error = EBADF;
else
error = ktrace_common(curp, SCARG(uap, ops),
SCARG(uap, facs), SCARG(uap, pid), fp);
FILE_UNUSE(fp, curp);
return error;
}
/*