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Check for invalid filedescriptors in getmsg() and putmsg().

This commit is contained in:
fvdl 1995-06-24 18:47:08 +00:00
parent 5781a8dcc0
commit cbcf8eee8a
1 changed files with 11 additions and 3 deletions
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14
sys/compat/svr4/svr4_stream.c
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@ -1,4 +1,4 @@
/* $NetBSD: svr4_stream.c,v 1.5 1995/03/31 03:06:39 christos Exp $ */
/* $NetBSD: svr4_stream.c,v 1.6 1995/06/24 18:47:08 fvdl Exp $ */
/*
* Copyright (c) 1994 Christos Zoulas
@ -641,7 +641,7 @@ svr4_putmsg(p, uap, retval)
register_t *retval;
{
struct filedesc *fdp = p->p_fd;
struct file *fp = fdp->fd_ofiles[SCARG(uap, fd)];
struct file *fp;
struct svr4_strbuf dat, ctl;
struct svr4_strmcmd sc;
struct svr4_netaddr *na;
@ -656,6 +656,10 @@ svr4_putmsg(p, uap, retval)
SCARG(uap, dat), SCARG(uap, flags));
#endif /* DEBUG_SVR4 */
if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles ||
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL)
return EBADF;
if (SCARG(uap, ctl) != NULL) {
if ((error = copyin(SCARG(uap, ctl), &ctl, sizeof(ctl))) != 0)
return error;
@ -754,7 +758,7 @@ svr4_getmsg(p, uap, retval)
register_t *retval;
{
struct filedesc *fdp = p->p_fd;
struct file *fp = fdp->fd_ofiles[SCARG(uap, fd)];
struct file *fp;
struct getpeername_args ga;
struct svr4_strbuf dat, ctl;
struct svr4_strmcmd sc;
@ -776,6 +780,10 @@ svr4_getmsg(p, uap, retval)
SCARG(uap, dat), 0);
#endif /* DEBUG_SVR4 */
if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles ||
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL)
return EBADF;
if (SCARG(uap, ctl) != NULL) {
if ((error = copyin(SCARG(uap, ctl), &ctl, sizeof(ctl))) != 0)
return error;