1994-05-24 10:09:53 +00:00
|
|
|
/*
|
|
|
|
* Copyright (c) 1982, 1986, 1990, 1993
|
|
|
|
* The Regents of the University of California. All rights reserved.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
|
|
* may be used to endorse or promote products derived from this software
|
|
|
|
* without specific prior written permission.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
* SUCH DAMAGE.
|
|
|
|
*
|
|
|
|
* @(#)sys_socket.c 8.1 (Berkeley) 6/10/93
|
|
|
|
*/
|
|
|
|
|
2003-06-11 00:56:59 +00:00
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
|
2002-10-06 14:39:15 +00:00
|
|
|
#include "opt_mac.h"
|
|
|
|
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <sys/param.h>
|
|
|
|
#include <sys/systm.h>
|
|
|
|
#include <sys/file.h>
|
2003-01-01 01:56:19 +00:00
|
|
|
#include <sys/filedesc.h>
|
2002-10-06 14:39:15 +00:00
|
|
|
#include <sys/mac.h>
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <sys/protosw.h>
|
2003-01-01 01:56:19 +00:00
|
|
|
#include <sys/sigio.h>
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <sys/socket.h>
|
|
|
|
#include <sys/socketvar.h>
|
1997-03-24 11:52:29 +00:00
|
|
|
#include <sys/filio.h> /* XXX */
|
|
|
|
#include <sys/sockio.h>
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <sys/stat.h>
|
1998-03-28 10:33:27 +00:00
|
|
|
#include <sys/uio.h>
|
2000-05-11 22:08:57 +00:00
|
|
|
#include <sys/ucred.h>
|
1994-05-24 10:09:53 +00:00
|
|
|
|
|
|
|
#include <net/if.h>
|
|
|
|
#include <net/route.h>
|
|
|
|
|
2001-02-15 16:34:11 +00:00
|
|
|
struct fileops socketops = {
|
2003-06-18 18:16:40 +00:00
|
|
|
.fo_read = soo_read,
|
|
|
|
.fo_write = soo_write,
|
|
|
|
.fo_ioctl = soo_ioctl,
|
|
|
|
.fo_poll = soo_poll,
|
|
|
|
.fo_kqfilter = soo_kqfilter,
|
|
|
|
.fo_stat = soo_stat,
|
|
|
|
.fo_close = soo_close,
|
|
|
|
.fo_flags = DFLAG_PASSABLE
|
2001-02-15 16:34:11 +00:00
|
|
|
};
|
1994-05-24 10:09:53 +00:00
|
|
|
|
|
|
|
/* ARGSUSED */
|
1999-01-30 06:25:00 +00:00
|
|
|
int
|
In order to better support flexible and extensible access control,
make a series of modifications to the credential arguments relating
to file read and write operations to cliarfy which credential is
used for what:
- Change fo_read() and fo_write() to accept "active_cred" instead of
"cred", and change the semantics of consumers of fo_read() and
fo_write() to pass the active credential of the thread requesting
an operation rather than the cached file cred. The cached file
cred is still available in fo_read() and fo_write() consumers
via fp->f_cred. These changes largely in sys_generic.c.
For each implementation of fo_read() and fo_write(), update cred
usage to reflect this change and maintain current semantics:
- badfo_readwrite() unchanged
- kqueue_read/write() unchanged
pipe_read/write() now authorize MAC using active_cred rather
than td->td_ucred
- soo_read/write() unchanged
- vn_read/write() now authorize MAC using active_cred but
VOP_READ/WRITE() with fp->f_cred
Modify vn_rdwr() to accept two credential arguments instead of a
single credential: active_cred and file_cred. Use active_cred
for MAC authorization, and select a credential for use in
VOP_READ/WRITE() based on whether file_cred is NULL or not. If
file_cred is provided, authorize the VOP using that cred,
otherwise the active credential, matching current semantics.
Modify current vn_rdwr() consumers to pass a file_cred if used
in the context of a struct file, and to always pass active_cred.
When vn_rdwr() is used without a file_cred, pass NOCRED.
These changes should maintain current semantics for read/write,
but avoid a redundant passing of fp->f_cred, as well as making
it more clear what the origin of each credential is in file
descriptor read/write operations.
Follow-up commits will make similar changes to other file descriptor
operations, and modify the MAC framework to pass both credentials
to MAC policy modules so they can implement either semantic for
revocation.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
2002-08-15 20:55:08 +00:00
|
|
|
soo_read(fp, uio, active_cred, flags, td)
|
1994-05-24 10:09:53 +00:00
|
|
|
struct file *fp;
|
|
|
|
struct uio *uio;
|
In order to better support flexible and extensible access control,
make a series of modifications to the credential arguments relating
to file read and write operations to cliarfy which credential is
used for what:
- Change fo_read() and fo_write() to accept "active_cred" instead of
"cred", and change the semantics of consumers of fo_read() and
fo_write() to pass the active credential of the thread requesting
an operation rather than the cached file cred. The cached file
cred is still available in fo_read() and fo_write() consumers
via fp->f_cred. These changes largely in sys_generic.c.
For each implementation of fo_read() and fo_write(), update cred
usage to reflect this change and maintain current semantics:
- badfo_readwrite() unchanged
- kqueue_read/write() unchanged
pipe_read/write() now authorize MAC using active_cred rather
than td->td_ucred
- soo_read/write() unchanged
- vn_read/write() now authorize MAC using active_cred but
VOP_READ/WRITE() with fp->f_cred
Modify vn_rdwr() to accept two credential arguments instead of a
single credential: active_cred and file_cred. Use active_cred
for MAC authorization, and select a credential for use in
VOP_READ/WRITE() based on whether file_cred is NULL or not. If
file_cred is provided, authorize the VOP using that cred,
otherwise the active credential, matching current semantics.
Modify current vn_rdwr() consumers to pass a file_cred if used
in the context of a struct file, and to always pass active_cred.
When vn_rdwr() is used without a file_cred, pass NOCRED.
These changes should maintain current semantics for read/write,
but avoid a redundant passing of fp->f_cred, as well as making
it more clear what the origin of each credential is in file
descriptor read/write operations.
Follow-up commits will make similar changes to other file descriptor
operations, and modify the MAC framework to pass both credentials
to MAC policy modules so they can implement either semantic for
revocation.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
2002-08-15 20:55:08 +00:00
|
|
|
struct ucred *active_cred;
|
2001-09-12 08:38:13 +00:00
|
|
|
struct thread *td;
|
1999-04-04 21:41:28 +00:00
|
|
|
int flags;
|
1994-05-24 10:09:53 +00:00
|
|
|
{
|
2003-01-13 00:33:17 +00:00
|
|
|
struct socket *so = fp->f_data;
|
2002-03-15 08:03:46 +00:00
|
|
|
int error;
|
|
|
|
|
2004-03-29 01:55:32 +00:00
|
|
|
NET_LOCK_GIANT();
|
2002-10-06 14:39:15 +00:00
|
|
|
#ifdef MAC
|
2004-06-13 02:50:07 +00:00
|
|
|
SOCK_LOCK(so);
|
2002-10-06 14:39:15 +00:00
|
|
|
error = mac_check_socket_receive(active_cred, so);
|
2004-06-13 02:50:07 +00:00
|
|
|
SOCK_UNLOCK(so);
|
2002-10-06 14:39:15 +00:00
|
|
|
if (error) {
|
2004-03-29 01:55:32 +00:00
|
|
|
NET_UNLOCK_GIANT();
|
2002-10-06 14:39:15 +00:00
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
#endif
|
2002-03-15 08:03:46 +00:00
|
|
|
error = so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0);
|
2004-03-29 01:55:32 +00:00
|
|
|
NET_UNLOCK_GIANT();
|
2002-03-15 08:03:46 +00:00
|
|
|
return (error);
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* ARGSUSED */
|
1999-01-30 06:25:00 +00:00
|
|
|
int
|
In order to better support flexible and extensible access control,
make a series of modifications to the credential arguments relating
to file read and write operations to cliarfy which credential is
used for what:
- Change fo_read() and fo_write() to accept "active_cred" instead of
"cred", and change the semantics of consumers of fo_read() and
fo_write() to pass the active credential of the thread requesting
an operation rather than the cached file cred. The cached file
cred is still available in fo_read() and fo_write() consumers
via fp->f_cred. These changes largely in sys_generic.c.
For each implementation of fo_read() and fo_write(), update cred
usage to reflect this change and maintain current semantics:
- badfo_readwrite() unchanged
- kqueue_read/write() unchanged
pipe_read/write() now authorize MAC using active_cred rather
than td->td_ucred
- soo_read/write() unchanged
- vn_read/write() now authorize MAC using active_cred but
VOP_READ/WRITE() with fp->f_cred
Modify vn_rdwr() to accept two credential arguments instead of a
single credential: active_cred and file_cred. Use active_cred
for MAC authorization, and select a credential for use in
VOP_READ/WRITE() based on whether file_cred is NULL or not. If
file_cred is provided, authorize the VOP using that cred,
otherwise the active credential, matching current semantics.
Modify current vn_rdwr() consumers to pass a file_cred if used
in the context of a struct file, and to always pass active_cred.
When vn_rdwr() is used without a file_cred, pass NOCRED.
These changes should maintain current semantics for read/write,
but avoid a redundant passing of fp->f_cred, as well as making
it more clear what the origin of each credential is in file
descriptor read/write operations.
Follow-up commits will make similar changes to other file descriptor
operations, and modify the MAC framework to pass both credentials
to MAC policy modules so they can implement either semantic for
revocation.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
2002-08-15 20:55:08 +00:00
|
|
|
soo_write(fp, uio, active_cred, flags, td)
|
1994-05-24 10:09:53 +00:00
|
|
|
struct file *fp;
|
|
|
|
struct uio *uio;
|
In order to better support flexible and extensible access control,
make a series of modifications to the credential arguments relating
to file read and write operations to cliarfy which credential is
used for what:
- Change fo_read() and fo_write() to accept "active_cred" instead of
"cred", and change the semantics of consumers of fo_read() and
fo_write() to pass the active credential of the thread requesting
an operation rather than the cached file cred. The cached file
cred is still available in fo_read() and fo_write() consumers
via fp->f_cred. These changes largely in sys_generic.c.
For each implementation of fo_read() and fo_write(), update cred
usage to reflect this change and maintain current semantics:
- badfo_readwrite() unchanged
- kqueue_read/write() unchanged
pipe_read/write() now authorize MAC using active_cred rather
than td->td_ucred
- soo_read/write() unchanged
- vn_read/write() now authorize MAC using active_cred but
VOP_READ/WRITE() with fp->f_cred
Modify vn_rdwr() to accept two credential arguments instead of a
single credential: active_cred and file_cred. Use active_cred
for MAC authorization, and select a credential for use in
VOP_READ/WRITE() based on whether file_cred is NULL or not. If
file_cred is provided, authorize the VOP using that cred,
otherwise the active credential, matching current semantics.
Modify current vn_rdwr() consumers to pass a file_cred if used
in the context of a struct file, and to always pass active_cred.
When vn_rdwr() is used without a file_cred, pass NOCRED.
These changes should maintain current semantics for read/write,
but avoid a redundant passing of fp->f_cred, as well as making
it more clear what the origin of each credential is in file
descriptor read/write operations.
Follow-up commits will make similar changes to other file descriptor
operations, and modify the MAC framework to pass both credentials
to MAC policy modules so they can implement either semantic for
revocation.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
2002-08-15 20:55:08 +00:00
|
|
|
struct ucred *active_cred;
|
2001-09-12 08:38:13 +00:00
|
|
|
struct thread *td;
|
1999-04-04 21:41:28 +00:00
|
|
|
int flags;
|
1994-05-24 10:09:53 +00:00
|
|
|
{
|
2003-01-13 00:33:17 +00:00
|
|
|
struct socket *so = fp->f_data;
|
2002-03-15 08:03:46 +00:00
|
|
|
int error;
|
|
|
|
|
2004-03-29 01:55:32 +00:00
|
|
|
NET_LOCK_GIANT();
|
2002-10-06 14:39:15 +00:00
|
|
|
#ifdef MAC
|
2004-06-13 02:50:07 +00:00
|
|
|
SOCK_LOCK(so);
|
2002-10-06 14:39:15 +00:00
|
|
|
error = mac_check_socket_send(active_cred, so);
|
2004-06-13 02:50:07 +00:00
|
|
|
SOCK_UNLOCK(so);
|
2002-10-06 14:39:15 +00:00
|
|
|
if (error) {
|
2004-03-29 01:55:32 +00:00
|
|
|
NET_UNLOCK_GIANT();
|
2002-10-06 14:39:15 +00:00
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
#endif
|
2002-03-15 08:03:46 +00:00
|
|
|
error = so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0,
|
2001-09-12 08:38:13 +00:00
|
|
|
uio->uio_td);
|
2004-03-29 01:55:32 +00:00
|
|
|
NET_UNLOCK_GIANT();
|
2002-03-15 08:03:46 +00:00
|
|
|
return (error);
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
|
|
|
|
1994-05-25 09:21:21 +00:00
|
|
|
int
|
2002-08-17 02:36:16 +00:00
|
|
|
soo_ioctl(fp, cmd, data, active_cred, td)
|
1994-05-24 10:09:53 +00:00
|
|
|
struct file *fp;
|
1998-06-07 17:13:14 +00:00
|
|
|
u_long cmd;
|
2002-06-29 01:50:25 +00:00
|
|
|
void *data;
|
2002-08-17 02:36:16 +00:00
|
|
|
struct ucred *active_cred;
|
2001-09-12 08:38:13 +00:00
|
|
|
struct thread *td;
|
1994-05-24 10:09:53 +00:00
|
|
|
{
|
2004-11-13 17:21:26 +00:00
|
|
|
struct socket *so = fp->f_data;
|
|
|
|
int error = 0;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
2004-11-17 09:09:55 +00:00
|
|
|
NET_LOCK_GIANT();
|
1994-05-24 10:09:53 +00:00
|
|
|
switch (cmd) {
|
|
|
|
|
|
|
|
case FIONBIO:
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCK_LOCK(so);
|
1994-05-24 10:09:53 +00:00
|
|
|
if (*(int *)data)
|
|
|
|
so->so_state |= SS_NBIO;
|
|
|
|
else
|
|
|
|
so->so_state &= ~SS_NBIO;
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCK_UNLOCK(so);
|
2004-11-13 17:21:26 +00:00
|
|
|
break;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
|
|
|
case FIOASYNC:
|
2004-06-17 22:48:11 +00:00
|
|
|
/*
|
|
|
|
* XXXRW: This code separately acquires SOCK_LOCK(so)
|
|
|
|
* and SOCKBUF_LOCK(&so->so_rcv) even though they are
|
|
|
|
* the same mutex to avoid introducing the assumption
|
|
|
|
* that they are the same.
|
|
|
|
*/
|
1994-05-24 10:09:53 +00:00
|
|
|
if (*(int *)data) {
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCK_LOCK(so);
|
1994-05-24 10:09:53 +00:00
|
|
|
so->so_state |= SS_ASYNC;
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCK_UNLOCK(so);
|
|
|
|
SOCKBUF_LOCK(&so->so_rcv);
|
1994-05-24 10:09:53 +00:00
|
|
|
so->so_rcv.sb_flags |= SB_ASYNC;
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCKBUF_UNLOCK(&so->so_rcv);
|
|
|
|
SOCKBUF_LOCK(&so->so_snd);
|
1994-05-24 10:09:53 +00:00
|
|
|
so->so_snd.sb_flags |= SB_ASYNC;
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCKBUF_UNLOCK(&so->so_snd);
|
1994-05-24 10:09:53 +00:00
|
|
|
} else {
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCK_LOCK(so);
|
1994-05-24 10:09:53 +00:00
|
|
|
so->so_state &= ~SS_ASYNC;
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCK_UNLOCK(so);
|
|
|
|
SOCKBUF_LOCK(&so->so_rcv);
|
1994-05-24 10:09:53 +00:00
|
|
|
so->so_rcv.sb_flags &= ~SB_ASYNC;
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCKBUF_UNLOCK(&so->so_rcv);
|
|
|
|
SOCKBUF_LOCK(&so->so_snd);
|
1994-05-24 10:09:53 +00:00
|
|
|
so->so_snd.sb_flags &= ~SB_ASYNC;
|
2004-06-17 22:48:11 +00:00
|
|
|
SOCKBUF_UNLOCK(&so->so_snd);
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
2004-11-13 17:21:26 +00:00
|
|
|
break;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
|
|
|
case FIONREAD:
|
2004-06-20 17:35:50 +00:00
|
|
|
/* Unlocked read. */
|
1994-05-24 10:09:53 +00:00
|
|
|
*(int *)data = so->so_rcv.sb_cc;
|
2004-11-13 17:21:26 +00:00
|
|
|
break;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
Installed the second patch attached to kern/7899 with some changes suggested
by bde, a few other tweaks to get the patch to apply cleanly again and
some improvements to the comments.
This change closes some fairly minor security holes associated with
F_SETOWN, fixes a few bugs, and removes some limitations that F_SETOWN
had on tty devices. For more details, see the description on the PR.
Because this patch increases the size of the proc and pgrp structures,
it is necessary to re-install the includes and recompile libkvm,
the vinum lkm, fstat, gcore, gdb, ipfilter, ps, top, and w.
PR: kern/7899
Reviewed by: bde, elvind
1998-11-11 10:04:13 +00:00
|
|
|
case FIOSETOWN:
|
2004-11-13 17:21:26 +00:00
|
|
|
error = fsetown(*(int *)data, &so->so_sigio);
|
|
|
|
break;
|
Installed the second patch attached to kern/7899 with some changes suggested
by bde, a few other tweaks to get the patch to apply cleanly again and
some improvements to the comments.
This change closes some fairly minor security holes associated with
F_SETOWN, fixes a few bugs, and removes some limitations that F_SETOWN
had on tty devices. For more details, see the description on the PR.
Because this patch increases the size of the proc and pgrp structures,
it is necessary to re-install the includes and recompile libkvm,
the vinum lkm, fstat, gcore, gdb, ipfilter, ps, top, and w.
PR: kern/7899
Reviewed by: bde, elvind
1998-11-11 10:04:13 +00:00
|
|
|
|
|
|
|
case FIOGETOWN:
|
2002-10-03 02:13:00 +00:00
|
|
|
*(int *)data = fgetown(&so->so_sigio);
|
2004-11-13 17:21:26 +00:00
|
|
|
break;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
Installed the second patch attached to kern/7899 with some changes suggested
by bde, a few other tweaks to get the patch to apply cleanly again and
some improvements to the comments.
This change closes some fairly minor security holes associated with
F_SETOWN, fixes a few bugs, and removes some limitations that F_SETOWN
had on tty devices. For more details, see the description on the PR.
Because this patch increases the size of the proc and pgrp structures,
it is necessary to re-install the includes and recompile libkvm,
the vinum lkm, fstat, gcore, gdb, ipfilter, ps, top, and w.
PR: kern/7899
Reviewed by: bde, elvind
1998-11-11 10:04:13 +00:00
|
|
|
case SIOCSPGRP:
|
2004-11-13 17:21:26 +00:00
|
|
|
error = fsetown(-(*(int *)data), &so->so_sigio);
|
|
|
|
break;
|
Installed the second patch attached to kern/7899 with some changes suggested
by bde, a few other tweaks to get the patch to apply cleanly again and
some improvements to the comments.
This change closes some fairly minor security holes associated with
F_SETOWN, fixes a few bugs, and removes some limitations that F_SETOWN
had on tty devices. For more details, see the description on the PR.
Because this patch increases the size of the proc and pgrp structures,
it is necessary to re-install the includes and recompile libkvm,
the vinum lkm, fstat, gcore, gdb, ipfilter, ps, top, and w.
PR: kern/7899
Reviewed by: bde, elvind
1998-11-11 10:04:13 +00:00
|
|
|
|
1994-05-24 10:09:53 +00:00
|
|
|
case SIOCGPGRP:
|
2002-10-03 02:13:00 +00:00
|
|
|
*(int *)data = -fgetown(&so->so_sigio);
|
2004-11-13 17:21:26 +00:00
|
|
|
break;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
|
|
|
case SIOCATMARK:
|
2004-06-20 17:35:50 +00:00
|
|
|
/* Unlocked read. */
|
2004-06-14 18:16:22 +00:00
|
|
|
*(int *)data = (so->so_rcv.sb_state & SBS_RCVATMARK) != 0;
|
2004-11-13 17:21:26 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/*
|
|
|
|
* Interface/routing/protocol specific ioctls:
|
|
|
|
* interface and routing ioctls should have a
|
|
|
|
* different entry since a socket's unnecessary
|
|
|
|
*/
|
|
|
|
if (IOCGROUP(cmd) == 'i')
|
|
|
|
error = ifioctl(so, cmd, data, td);
|
|
|
|
else if (IOCGROUP(cmd) == 'r')
|
|
|
|
error = rtioctl(cmd, data);
|
|
|
|
else
|
|
|
|
error = ((*so->so_proto->pr_usrreqs->pru_control)
|
|
|
|
(so, cmd, data, 0, td));
|
|
|
|
break;
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
2004-11-17 09:09:55 +00:00
|
|
|
NET_UNLOCK_GIANT();
|
2004-11-13 17:21:26 +00:00
|
|
|
return(error);
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
|
|
|
|
1994-05-25 09:21:21 +00:00
|
|
|
int
|
Make similar changes to fo_stat() and fo_poll() as made earlier to
fo_read() and fo_write(): explicitly use the cred argument to fo_poll()
as "active_cred" using the passed file descriptor's f_cred reference
to provide access to the file credential. Add an active_cred
argument to fo_stat() so that implementers have access to the active
credential as well as the file credential. Generally modify callers
of fo_stat() to pass in td->td_ucred rather than fp->f_cred, which
was redundantly provided via the fp argument. This set of modifications
also permits threads to perform these operations on behalf of another
thread without modifying their credential.
Trickle this change down into fo_stat/poll() implementations:
- badfo_poll(), badfo_stat(): modify/add arguments.
- kqueue_poll(), kqueue_stat(): modify arguments.
- pipe_poll(), pipe_stat(): modify/add arguments, pass active_cred to
MAC checks rather than td->td_ucred.
- soo_poll(), soo_stat(): modify/add arguments, pass fp->f_cred rather
than cred to pru_sopoll() to maintain current semantics.
- sopoll(): moidfy arguments.
- vn_poll(), vn_statfile(): modify/add arguments, pass new arguments
to vn_stat(). Pass active_cred to MAC and fp->f_cred to VOP_POLL()
to maintian current semantics.
- vn_close(): rename cred to file_cred to reflect reality while I'm here.
- vn_stat(): Add active_cred and file_cred arguments to vn_stat()
and consumers so that this distinction is maintained at the VFS
as well as 'struct file' layer. Pass active_cred instead of
td->td_ucred to MAC and to VOP_GETATTR() to maintain current semantics.
- fifofs: modify the creation of a "filetemp" so that the file
credential is properly initialized and can be used in the socket
code if desired. Pass ap->a_td->td_ucred as the active
credential to soo_poll(). If we teach the vnop interface about
the distinction between file and active credentials, we would use
the active credential here.
Note that current inconsistent passing of active_cred vs. file_cred to
VOP's is maintained. It's not clear why GETATTR would be authorized
using active_cred while POLL would be authorized using file_cred at
the file system level.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
2002-08-16 12:52:03 +00:00
|
|
|
soo_poll(fp, events, active_cred, td)
|
1994-05-24 10:09:53 +00:00
|
|
|
struct file *fp;
|
1997-09-14 02:52:18 +00:00
|
|
|
int events;
|
Make similar changes to fo_stat() and fo_poll() as made earlier to
fo_read() and fo_write(): explicitly use the cred argument to fo_poll()
as "active_cred" using the passed file descriptor's f_cred reference
to provide access to the file credential. Add an active_cred
argument to fo_stat() so that implementers have access to the active
credential as well as the file credential. Generally modify callers
of fo_stat() to pass in td->td_ucred rather than fp->f_cred, which
was redundantly provided via the fp argument. This set of modifications
also permits threads to perform these operations on behalf of another
thread without modifying their credential.
Trickle this change down into fo_stat/poll() implementations:
- badfo_poll(), badfo_stat(): modify/add arguments.
- kqueue_poll(), kqueue_stat(): modify arguments.
- pipe_poll(), pipe_stat(): modify/add arguments, pass active_cred to
MAC checks rather than td->td_ucred.
- soo_poll(), soo_stat(): modify/add arguments, pass fp->f_cred rather
than cred to pru_sopoll() to maintain current semantics.
- sopoll(): moidfy arguments.
- vn_poll(), vn_statfile(): modify/add arguments, pass new arguments
to vn_stat(). Pass active_cred to MAC and fp->f_cred to VOP_POLL()
to maintian current semantics.
- vn_close(): rename cred to file_cred to reflect reality while I'm here.
- vn_stat(): Add active_cred and file_cred arguments to vn_stat()
and consumers so that this distinction is maintained at the VFS
as well as 'struct file' layer. Pass active_cred instead of
td->td_ucred to MAC and to VOP_GETATTR() to maintain current semantics.
- fifofs: modify the creation of a "filetemp" so that the file
credential is properly initialized and can be used in the socket
code if desired. Pass ap->a_td->td_ucred as the active
credential to soo_poll(). If we teach the vnop interface about
the distinction between file and active credentials, we would use
the active credential here.
Note that current inconsistent passing of active_cred vs. file_cred to
VOP's is maintained. It's not clear why GETATTR would be authorized
using active_cred while POLL would be authorized using file_cred at
the file system level.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
2002-08-16 12:52:03 +00:00
|
|
|
struct ucred *active_cred;
|
2001-09-12 08:38:13 +00:00
|
|
|
struct thread *td;
|
1994-05-24 10:09:53 +00:00
|
|
|
{
|
2003-01-13 00:33:17 +00:00
|
|
|
struct socket *so = fp->f_data;
|
2004-11-13 17:21:26 +00:00
|
|
|
int error;
|
|
|
|
|
2004-11-17 08:01:10 +00:00
|
|
|
NET_LOCK_GIANT();
|
2004-11-13 17:21:26 +00:00
|
|
|
error = (so->so_proto->pr_usrreqs->pru_sopoll)
|
|
|
|
(so, events, fp->f_cred, td);
|
2004-11-17 08:01:10 +00:00
|
|
|
NET_UNLOCK_GIANT();
|
2004-11-13 17:21:26 +00:00
|
|
|
|
|
|
|
return (error);
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
|
|
|
|
1994-05-25 09:21:21 +00:00
|
|
|
int
|
Make similar changes to fo_stat() and fo_poll() as made earlier to
fo_read() and fo_write(): explicitly use the cred argument to fo_poll()
as "active_cred" using the passed file descriptor's f_cred reference
to provide access to the file credential. Add an active_cred
argument to fo_stat() so that implementers have access to the active
credential as well as the file credential. Generally modify callers
of fo_stat() to pass in td->td_ucred rather than fp->f_cred, which
was redundantly provided via the fp argument. This set of modifications
also permits threads to perform these operations on behalf of another
thread without modifying their credential.
Trickle this change down into fo_stat/poll() implementations:
- badfo_poll(), badfo_stat(): modify/add arguments.
- kqueue_poll(), kqueue_stat(): modify arguments.
- pipe_poll(), pipe_stat(): modify/add arguments, pass active_cred to
MAC checks rather than td->td_ucred.
- soo_poll(), soo_stat(): modify/add arguments, pass fp->f_cred rather
than cred to pru_sopoll() to maintain current semantics.
- sopoll(): moidfy arguments.
- vn_poll(), vn_statfile(): modify/add arguments, pass new arguments
to vn_stat(). Pass active_cred to MAC and fp->f_cred to VOP_POLL()
to maintian current semantics.
- vn_close(): rename cred to file_cred to reflect reality while I'm here.
- vn_stat(): Add active_cred and file_cred arguments to vn_stat()
and consumers so that this distinction is maintained at the VFS
as well as 'struct file' layer. Pass active_cred instead of
td->td_ucred to MAC and to VOP_GETATTR() to maintain current semantics.
- fifofs: modify the creation of a "filetemp" so that the file
credential is properly initialized and can be used in the socket
code if desired. Pass ap->a_td->td_ucred as the active
credential to soo_poll(). If we teach the vnop interface about
the distinction between file and active credentials, we would use
the active credential here.
Note that current inconsistent passing of active_cred vs. file_cred to
VOP's is maintained. It's not clear why GETATTR would be authorized
using active_cred while POLL would be authorized using file_cred at
the file system level.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
2002-08-16 12:52:03 +00:00
|
|
|
soo_stat(fp, ub, active_cred, td)
|
1999-11-08 03:31:01 +00:00
|
|
|
struct file *fp;
|
|
|
|
struct stat *ub;
|
Make similar changes to fo_stat() and fo_poll() as made earlier to
fo_read() and fo_write(): explicitly use the cred argument to fo_poll()
as "active_cred" using the passed file descriptor's f_cred reference
to provide access to the file credential. Add an active_cred
argument to fo_stat() so that implementers have access to the active
credential as well as the file credential. Generally modify callers
of fo_stat() to pass in td->td_ucred rather than fp->f_cred, which
was redundantly provided via the fp argument. This set of modifications
also permits threads to perform these operations on behalf of another
thread without modifying their credential.
Trickle this change down into fo_stat/poll() implementations:
- badfo_poll(), badfo_stat(): modify/add arguments.
- kqueue_poll(), kqueue_stat(): modify arguments.
- pipe_poll(), pipe_stat(): modify/add arguments, pass active_cred to
MAC checks rather than td->td_ucred.
- soo_poll(), soo_stat(): modify/add arguments, pass fp->f_cred rather
than cred to pru_sopoll() to maintain current semantics.
- sopoll(): moidfy arguments.
- vn_poll(), vn_statfile(): modify/add arguments, pass new arguments
to vn_stat(). Pass active_cred to MAC and fp->f_cred to VOP_POLL()
to maintian current semantics.
- vn_close(): rename cred to file_cred to reflect reality while I'm here.
- vn_stat(): Add active_cred and file_cred arguments to vn_stat()
and consumers so that this distinction is maintained at the VFS
as well as 'struct file' layer. Pass active_cred instead of
td->td_ucred to MAC and to VOP_GETATTR() to maintain current semantics.
- fifofs: modify the creation of a "filetemp" so that the file
credential is properly initialized and can be used in the socket
code if desired. Pass ap->a_td->td_ucred as the active
credential to soo_poll(). If we teach the vnop interface about
the distinction between file and active credentials, we would use
the active credential here.
Note that current inconsistent passing of active_cred vs. file_cred to
VOP's is maintained. It's not clear why GETATTR would be authorized
using active_cred while POLL would be authorized using file_cred at
the file system level.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
2002-08-16 12:52:03 +00:00
|
|
|
struct ucred *active_cred;
|
2001-09-12 08:38:13 +00:00
|
|
|
struct thread *td;
|
1994-05-24 10:09:53 +00:00
|
|
|
{
|
2003-01-13 00:33:17 +00:00
|
|
|
struct socket *so = fp->f_data;
|
2004-07-22 20:40:23 +00:00
|
|
|
int error;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
|
|
|
bzero((caddr_t)ub, sizeof (*ub));
|
2000-07-02 23:56:45 +00:00
|
|
|
ub->st_mode = S_IFSOCK;
|
2004-07-22 20:40:23 +00:00
|
|
|
NET_LOCK_GIANT();
|
2000-07-02 23:56:45 +00:00
|
|
|
/*
|
2004-06-14 18:16:22 +00:00
|
|
|
* If SBS_CANTRCVMORE is set, but there's still data left in the
|
2000-07-02 23:56:45 +00:00
|
|
|
* receive buffer, the socket is still readable.
|
2004-06-20 17:35:50 +00:00
|
|
|
*
|
|
|
|
* XXXRW: perhaps should lock socket buffer so st_size result
|
|
|
|
* is consistent.
|
2000-07-02 23:56:45 +00:00
|
|
|
*/
|
2004-06-20 17:35:50 +00:00
|
|
|
/* Unlocked read. */
|
2004-06-14 18:16:22 +00:00
|
|
|
if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) == 0 ||
|
2000-07-02 23:56:45 +00:00
|
|
|
so->so_rcv.sb_cc != 0)
|
|
|
|
ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
|
2004-06-14 18:16:22 +00:00
|
|
|
if ((so->so_snd.sb_state & SBS_CANTSENDMORE) == 0)
|
2000-07-02 23:56:45 +00:00
|
|
|
ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
|
2002-11-01 21:31:13 +00:00
|
|
|
ub->st_size = so->so_rcv.sb_cc - so->so_rcv.sb_ctl;
|
2000-05-11 22:08:57 +00:00
|
|
|
ub->st_uid = so->so_cred->cr_uid;
|
|
|
|
ub->st_gid = so->so_cred->cr_gid;
|
2004-07-22 20:40:23 +00:00
|
|
|
error = (*so->so_proto->pr_usrreqs->pru_sense)(so, ub);
|
|
|
|
NET_UNLOCK_GIANT();
|
|
|
|
return (error);
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
|
|
|
|
2001-11-17 03:07:11 +00:00
|
|
|
/*
|
|
|
|
* API socket close on file pointer. We call soclose() to close the
|
|
|
|
* socket (including initiating closing protocols). soclose() will
|
|
|
|
* sorele() the file reference but the actual socket will not go away
|
|
|
|
* until the socket's ref count hits 0.
|
|
|
|
*/
|
1994-05-24 10:09:53 +00:00
|
|
|
/* ARGSUSED */
|
1999-01-30 06:25:00 +00:00
|
|
|
int
|
2001-09-12 08:38:13 +00:00
|
|
|
soo_close(fp, td)
|
1994-05-24 10:09:53 +00:00
|
|
|
struct file *fp;
|
2001-09-12 08:38:13 +00:00
|
|
|
struct thread *td;
|
1994-05-24 10:09:53 +00:00
|
|
|
{
|
|
|
|
int error = 0;
|
2001-11-17 03:07:11 +00:00
|
|
|
struct socket *so;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
2004-07-22 18:35:43 +00:00
|
|
|
NET_LOCK_GIANT();
|
2003-01-13 00:33:17 +00:00
|
|
|
so = fp->f_data;
|
1999-08-04 18:53:50 +00:00
|
|
|
fp->f_ops = &badfileops;
|
2003-01-13 00:33:17 +00:00
|
|
|
fp->f_data = NULL;
|
2002-01-13 11:58:06 +00:00
|
|
|
|
|
|
|
if (so)
|
2001-11-17 03:07:11 +00:00
|
|
|
error = soclose(so);
|
2004-07-22 18:35:43 +00:00
|
|
|
NET_UNLOCK_GIANT();
|
1994-05-24 10:09:53 +00:00
|
|
|
return (error);
|
|
|
|
}
|