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svr4_sys_ioctl(): acquire a reference to the file.

This commit is contained in:
pk 2004-06-01 10:38:39 +00:00
parent c6c77837c9
commit f0f0f16529
1 changed files with 17 additions and 8 deletions
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25
sys/compat/svr4/svr4_ioctl.c
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@ -1,4 +1,4 @@
/* $NetBSD: svr4_ioctl.c,v 1.24 2003/02/23 14:37:33 pk Exp $ */
/* $NetBSD: svr4_ioctl.c,v 1.25 2004/06/01 10:38:39 pk Exp $ */
/*-
* Copyright (c) 1994 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: svr4_ioctl.c,v 1.24 2003/02/23 14:37:33 pk Exp $");
__KERNEL_RCSID(0, "$NetBSD: svr4_ioctl.c,v 1.25 2004/06/01 10:38:39 pk Exp $");
#include <sys/param.h>
#include <sys/proc.h>
@ -108,6 +108,7 @@ svr4_sys_ioctl(l, v, retval)
struct file *fp;
struct filedesc *fdp;
u_long cmd;
int error;
int (*fun) __P((struct file *, struct lwp *, register_t *,
int, u_long, caddr_t));
#ifdef DEBUG_SVR4
@ -127,10 +128,12 @@ svr4_sys_ioctl(l, v, retval)
if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
return EBADF;
simple_unlock(&fp->f_slock);
FILE_USE(fp);
if ((fp->f_flag & (FREAD | FWRITE)) == 0)
return EBADF;
if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
error = EBADF;
goto out;
}
switch (cmd & 0xff00) {
case SVR4_tIOC:
@ -155,11 +158,17 @@ svr4_sys_ioctl(l, v, retval)
case SVR4_XIOC:
/* We do not support those */
return EINVAL;
error = EINVAL;
goto out;
default:
DPRINTF(("Unimplemented ioctl %lx\n", cmd));
return 0; /* XXX: really ENOSYS */
error = 0; /* XXX: really ENOSYS */
goto out;
}
return (*fun)(fp, l, retval, SCARG(uap, fd), cmd, SCARG(uap, data));
error = (*fun)(fp, l, retval, SCARG(uap, fd), cmd, SCARG(uap, data));
out:
FILE_UNUSE(fp, p);
return (error);
}