<commit_before>/*-
 * Copyright (c) 2002 <NAME>
 * Copyright (c) 2002 Networks Associates Technology, Inc.
 * All rights reserved.
 *
 * This software was developed for the FreeBSD Project by <NAME>
 * and NAI Labs, the Security Research Division of Network Associates, Inc.
 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
 * DARPA CHATS research program.
 *
 * 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.
 * 3. The names of the authors may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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_geom.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/bio.h>
#include <sys/conf.h>
#include <sys/disk.h>
#include <sys/malloc.h>
#include <sys/sysctl.h>
#include <sys/sbuf.h>

#include <sys/lock.h>
#include <sys/mutex.h>

#include <vm/vm.h>
#include <vm/vm_extern.h>

#include <geom/geom.h>
#include <geom/geom_int.h>
#define GCTL_TABLE 1
#include <geom/geom_ctl.h>

#include <machine/stdarg.h>

static d_ioctl_t g_ctl_ioctl;

static struct cdevsw g_ctl_cdevsw = {
	.d_version =	D_VERSION,
	.d_flags =	D_NEEDGIANT,
	.d_ioctl =	g_ctl_ioctl,
	.d_name =	"g_ctl",
};

void
g_ctl_init(void)
{

	make_dev(&g_ctl_cdevsw, 0,
	    UID_ROOT, GID_OPERATOR, 0640, PATH_GEOM_CTL);
	KASSERT(GCTL_PARAM_RD == VM_PROT_READ,
		("GCTL_PARAM_RD != VM_PROT_READ"));
	KASSERT(GCTL_PARAM_WR == VM_PROT_WRITE,
		("GCTL_PARAM_WR != VM_PROT_WRITE"));
}

/*
 * Report an error back to the user in ascii format.  Return whatever copyout
 * returned, or EINVAL if it succeeded.
 * XXX: should not be static.
 * XXX: should take printf like args.
 */
int
gctl_error(struct gctl_req *req, const char *fmt, ...)
{
	va_list ap;

	if (req == NULL)
		return (EINVAL);

	/* We only record the first error */
	if (req->nerror)
		return (req->nerror);

	va_start(ap, fmt);
	sbuf_vprintf(req->serror, fmt, ap);
	va_end(ap);
	sbuf_finish(req->serror);
	if (g_debugflags & G_F_CTLDUMP)
		printf("gctl %p error \"%s\"\n", req, sbuf_data(req->serror));
	req->nerror = copyout(sbuf_data(req->serror), req->error,
	    imin(req->lerror, sbuf_len(req->serror) + 1));
	if (!req->nerror)
		req->nerror = EINVAL;
	return (req->nerror);
}

/*
 * Allocate space and copyin() something.
 * XXX: this should really be a standard function in the kernel.
 */
static void *
geom_alloc_copyin(struct gctl_req *req, void *uaddr, size_t len)
{
	void *ptr;

	ptr = g_malloc(len, M_WAITOK);
	if (ptr == NULL)
		req->nerror = ENOMEM;
	else
		req->nerror = copyin(uaddr, ptr, len);
	if (!req->nerror)
		return (ptr);
	if (ptr != NULL)
		g_free(ptr);
	return (NULL);
}

static void
gctl_copyin(struct gctl_req *req)
{
	int error, i;
	struct gctl_req_arg *ap;
	char *p;

	ap = geom_alloc_copyin(req, req->arg, req->narg * sizeof(*ap));
	if (ap == NULL) {
		req->nerror = ENOMEM;
		req->arg = NULL;
		return;
	}

	/* Nothing have been copyin()'ed yet */
	for (i = 0; i < req->narg; i++) {
		ap[i].flag &= ~(GCTL_PARAM_NAMEKERNEL|GCTL_PARAM_VALUEKERNEL);
		ap[i].flag &= ~GCTL_PARAM_CHANGED;
		ap[i].kvalue = NULL;
	}

	error = 0;
	for (i = 0; i < req->narg; i++) {
		if (ap[i].nlen < 1 || ap[i].nlen > SPECNAMELEN) {
			error = gctl_error(req,
			    "wrong param name length %d: %d", i, ap[i].nlen);
			break;
		}
		p = geom_alloc_copyin(req, ap[i].name, ap[i].nlen);
		if (p == NULL)
			break;
		if (p[ap[i].nlen - 1] != '\0') {
			error = gctl_error(req, "unterminated param name");
			g_free(p);
			break;
		}
		ap[i].name = p;
		ap[i].flag |= GCTL_PARAM_NAMEKERNEL;
		if (ap[i].len < 0) {
			error = gctl_error(req, "negative param length");
			break;
		}
		if (ap[i].len == 0) {
			ap[i].kvalue = ap[i].value;
			ap[i].flag |= GCTL_PARAM_VALUEKERNEL;
			continue;
		}
		p = geom_alloc_copyin(req, ap[i].value, ap[i].len);
		if (p == NULL)
			break;
		if ((ap[i].flag & GCTL_PARAM_ASCII) &&
		    p[ap[i].len - 1] != '\0') {
			error = gctl_error(req, "unterminated param value");
			g_free(p);
			break;
		}
		ap[i].kvalue = p;
		ap[i].flag |= GCTL_PARAM_VALUEKERNEL;
	}
	req->arg = ap;
	return;
}

static void
gctl_copyout(struct gctl_req *req)
{
	int error, i;
	struct gctl_req_arg *ap;

	if (req->nerror)
		return;
	error = 0;
	ap = req->arg;
	for (i = 0; i < req->narg; i++, ap++) {
		if (!(ap->flag & GCTL_PARAM_CHANGED))
			continue;
		error = copyout(ap->kvalue, ap->value, ap->len);<commit_msg>Discontinue zero-length g_ctl arguments as "just give him this pointer" transfers.  The necessary context for calling copyin() isn't available anyway and automatic code-validation chokes on this.<commit_after>/*-
 * Copyright (c) 2002 <NAME>
 * Copyright (c) 2002 Networks Associates Technology, Inc.
 * All rights reserved.
 *
 * This software was developed for the FreeBSD Project by <NAME>
 * and NAI Labs, the Security Research Division of Network Associates, Inc.
 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
 * DARPA CHATS research program.
 *
 * 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.
 * 3. The names of the authors may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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_geom.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/bio.h>
#include <sys/conf.h>
#include <sys/disk.h>
#include <sys/malloc.h>
#include <sys/sysctl.h>
#include <sys/sbuf.h>

#include <sys/lock.h>
#include <sys/mutex.h>

#include <vm/vm.h>
#include <vm/vm_extern.h>

#include <geom/geom.h>
#include <geom/geom_int.h>
#define GCTL_TABLE 1
#include <geom/geom_ctl.h>

#include <machine/stdarg.h>

static d_ioctl_t g_ctl_ioctl;

static struct cdevsw g_ctl_cdevsw = {
	.d_version =	D_VERSION,
	.d_flags =	D_NEEDGIANT,
	.d_ioctl =	g_ctl_ioctl,
	.d_name =	"g_ctl",
};

void
g_ctl_init(void)
{

	make_dev(&g_ctl_cdevsw, 0,
	    UID_ROOT, GID_OPERATOR, 0640, PATH_GEOM_CTL);
	KASSERT(GCTL_PARAM_RD == VM_PROT_READ,
		("GCTL_PARAM_RD != VM_PROT_READ"));
	KASSERT(GCTL_PARAM_WR == VM_PROT_WRITE,
		("GCTL_PARAM_WR != VM_PROT_WRITE"));
}

/*
 * Report an error back to the user in ascii format.  Return whatever copyout
 * returned, or EINVAL if it succeeded.
 * XXX: should not be static.
 * XXX: should take printf like args.
 */
int
gctl_error(struct gctl_req *req, const char *fmt, ...)
{
	va_list ap;

	if (req == NULL)
		return (EINVAL);

	/* We only record the first error */
	if (req->nerror)
		return (req->nerror);

	va_start(ap, fmt);
	sbuf_vprintf(req->serror, fmt, ap);
	va_end(ap);
	sbuf_finish(req->serror);
	if (g_debugflags & G_F_CTLDUMP)
		printf("gctl %p error \"%s\"\n", req, sbuf_data(req->serror));
	req->nerror = copyout(sbuf_data(req->serror), req->error,
	    imin(req->lerror, sbuf_len(req->serror) + 1));
	if (!req->nerror)
		req->nerror = EINVAL;
	return (req->nerror);
}

/*
 * Allocate space and copyin() something.
 * XXX: this should really be a standard function in the kernel.
 */
static void *
geom_alloc_copyin(struct gctl_req *req, void *uaddr, size_t len)
{
	void *ptr;

	ptr = g_malloc(len, M_WAITOK);
	if (ptr == NULL)
		req->nerror = ENOMEM;
	else
		req->nerror = copyin(uaddr, ptr, len);
	if (!req->nerror)
		return (ptr);
	if (ptr != NULL)
		g_free(ptr);
	return (NULL);
}

static void
gctl_copyin(struct gctl_req *req)
{
	int error, i;
	struct gctl_req_arg *ap;
	char *p;

	ap = geom_alloc_copyin(req, req->arg, req->narg * sizeof(*ap));
	if (ap == NULL) {
		req->nerror = ENOMEM;
		req->arg = NULL;
		return;
	}

	/* Nothing have been copyin()'ed yet */
	for (i = 0; i < req->narg; i++) {
		ap[i].flag &= ~(GCTL_PARAM_NAMEKERNEL|GCTL_PARAM_VALUEKERNEL);
		ap[i].flag &= ~GCTL_PARAM_CHANGED;
		ap[i].kvalue = NULL;
	}

	error = 0;
	for (i = 0; i < req->narg; i++) {
		if (ap[i].nlen < 1 || ap[i].nlen > SPECNAMELEN) {
			error = gctl_error(req,
			    "wrong param name length %d: %d", i, ap[i].nlen);
			break;
		}
		p = geom_alloc_copyin(req, ap[i].name, ap[i].nlen);
		if (p == NULL)
			break;
		if (p[ap[i].nlen - 1] != '\0') {
			error = gctl_error(req, "unterminated param name");
			g_free(p);
			break;
		}
		ap[i].name = p;
		ap[i].flag |= GCTL_PARAM_NAMEKERNEL;
		if (ap[i].len <= 0) {
			error = gctl_error(req, "negative param length");
			break;
		}
		p = geom_alloc_copyin(req, ap[i].value, ap[i].len);
		if (p == NULL)
			break;
		if ((ap[i].flag & GCTL_PARAM_ASCII) &&
		    p[ap[i].len - 1] != '\0') {
			error = gctl_error(req, "unterminated param value");
			g_free(p);
			break;
		}
		ap[i].kvalue = p;
		ap[i].flag |= GCTL_PARAM_VALUEKERNEL;
	}
	req->arg = ap;
	return;
}

static void
gctl_copyout(struct gctl_req *req)
{
	int error, i;
	struct gctl_req_arg *ap;

	if (req->nerror)
		return;
	error = 0;
	ap = req->arg;
	for (i = 0; i < req->narg; i++, ap++) {
		if (!(ap->flag & GCTL_PARAM_CHANGED))
			continue;
		error = copyout(ap->kvalue, ap->value, ap->len);
{'fraction_non_alphanumeric': 0.13702928870292888, 'fraction_numerical': 0.007060669456066946, 'mean_word_length': 3.8511627906976744, 'pattern_counts': {'":': 0, '<': 55, '<?xml version=': 0, '>': 107, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '3351337', 'n_tokens_mistral': 4577, 'n_tokens_neox': 4213, 'n_words': 1278}