7f2d13d607
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2013 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Pawel Jakub Dawidek under sponsorship from
|
|
* the FreeBSD Foundation.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_capsicum.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/capsicum.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/syscallsubr.h>
|
|
#include <sys/sysproto.h>
|
|
|
|
#include <security/audit/audit.h>
|
|
|
|
#include <compat/freebsd32/freebsd32_proto.h>
|
|
|
|
#ifdef CAPABILITIES
|
|
|
|
MALLOC_DECLARE(M_FILECAPS);
|
|
|
|
int
|
|
freebsd32_cap_ioctls_limit(struct thread *td,
|
|
struct freebsd32_cap_ioctls_limit_args *uap)
|
|
{
|
|
u_long *cmds;
|
|
uint32_t *cmds32;
|
|
size_t ncmds;
|
|
u_int i;
|
|
int error;
|
|
|
|
ncmds = uap->ncmds;
|
|
|
|
if (ncmds > 256) /* XXX: Is 256 sane? */
|
|
return (EINVAL);
|
|
|
|
if (ncmds == 0) {
|
|
cmds = NULL;
|
|
} else {
|
|
cmds32 = malloc(sizeof(cmds32[0]) * ncmds, M_FILECAPS, M_WAITOK);
|
|
error = copyin(uap->cmds, cmds32, sizeof(cmds32[0]) * ncmds);
|
|
if (error != 0) {
|
|
free(cmds32, M_FILECAPS);
|
|
return (error);
|
|
}
|
|
cmds = malloc(sizeof(cmds[0]) * ncmds, M_FILECAPS, M_WAITOK);
|
|
for (i = 0; i < ncmds; i++)
|
|
cmds[i] = cmds32[i];
|
|
free(cmds32, M_FILECAPS);
|
|
}
|
|
|
|
return (kern_cap_ioctls_limit(td, uap->fd, cmds, ncmds));
|
|
}
|
|
|
|
int
|
|
freebsd32_cap_ioctls_get(struct thread *td,
|
|
struct freebsd32_cap_ioctls_get_args *uap)
|
|
{
|
|
struct filedesc *fdp;
|
|
struct filedescent *fdep;
|
|
uint32_t *cmds32;
|
|
u_long *cmds;
|
|
size_t maxcmds;
|
|
int error, fd;
|
|
u_int i;
|
|
|
|
fd = uap->fd;
|
|
cmds32 = uap->cmds;
|
|
maxcmds = uap->maxcmds;
|
|
|
|
AUDIT_ARG_FD(fd);
|
|
|
|
fdp = td->td_proc->p_fd;
|
|
FILEDESC_SLOCK(fdp);
|
|
|
|
if (fget_locked(fdp, fd) == NULL) {
|
|
error = EBADF;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* If all ioctls are allowed (fde_nioctls == -1 && fde_ioctls == NULL)
|
|
* the only sane thing we can do is to not populate the given array and
|
|
* return CAP_IOCTLS_ALL (actually, INT_MAX).
|
|
*/
|
|
|
|
fdep = &fdp->fd_ofiles[fd];
|
|
cmds = fdep->fde_ioctls;
|
|
if (cmds32 != NULL && cmds != NULL) {
|
|
for (i = 0; i < MIN(fdep->fde_nioctls, maxcmds); i++) {
|
|
error = suword32(&cmds32[i], cmds[i]);
|
|
if (error != 0)
|
|
goto out;
|
|
}
|
|
}
|
|
if (fdep->fde_nioctls == -1)
|
|
td->td_retval[0] = INT_MAX;
|
|
else
|
|
td->td_retval[0] = fdep->fde_nioctls;
|
|
|
|
error = 0;
|
|
out:
|
|
FILEDESC_SUNLOCK(fdp);
|
|
return (error);
|
|
}
|
|
|
|
#else /* !CAPABILITIES */
|
|
|
|
int
|
|
freebsd32_cap_ioctls_limit(struct thread *td,
|
|
struct freebsd32_cap_ioctls_limit_args *uap)
|
|
{
|
|
|
|
return (ENOSYS);
|
|
}
|
|
|
|
int
|
|
freebsd32_cap_ioctls_get(struct thread *td,
|
|
struct freebsd32_cap_ioctls_get_args *uap)
|
|
{
|
|
|
|
return (ENOSYS);
|
|
}
|
|
|
|
#endif /* CAPABILITIES */
|