xref: /illumos-gate/usr/src/lib/libproc/common/pr_getrlimit.c (revision 1da57d55)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 1997-2000 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#define	_LARGEFILE64_SOURCE

#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/resource.h>
#include "libproc.h"

/*
 * getrlimit() system call -- executed by subject process.
 */
int
pr_getrlimit(struct ps_prochandle *Pr,
	int resource, struct rlimit *rlp)
{
	sysret_t rval;			/* return value from getrlimit() */
	argdes_t argd[2];		/* arg descriptors for getrlimit() */
	argdes_t *adp;
	int sysnum;
	int error;

	if (Pr == NULL)		/* no subject process */
		return (getrlimit(resource, rlp));

	adp = &argd[0];		/* resource argument */
	adp->arg_value = resource;
	adp->arg_object = NULL;
	adp->arg_type = AT_BYVAL;
	adp->arg_inout = AI_INPUT;
	adp->arg_size = 0;

	adp++;			/* rlp argument */
	adp->arg_value = 0;
	adp->arg_object = rlp;
	adp->arg_type = AT_BYREF;
	adp->arg_inout = AI_OUTPUT;
	adp->arg_size = sizeof (*rlp);

#ifdef _LP64
	if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
		sysnum = SYS_getrlimit64;
	else
		sysnum = SYS_getrlimit;
#else	/* _LP64 */
	sysnum = SYS_getrlimit;
#endif	/* _LP64 */

	error = Psyscall(Pr, &rval, sysnum, 2, &argd[0]);

	if (error) {
		errno = (error > 0)? error : ENOSYS;
		return (-1);
	}
	return (rval.sys_rval1);
}

/*
 * setrlimit() system call -- executed by subject process.
 */
int
pr_setrlimit(struct ps_prochandle *Pr,
	int resource, const struct rlimit *rlp)
{
	sysret_t rval;			/* return value from setrlimit() */
	argdes_t argd[2];		/* arg descriptors for setrlimit() */
	argdes_t *adp;
	int sysnum;
	int error;

	if (Pr == NULL)		/* no subject process */
		return (setrlimit(resource, rlp));

	adp = &argd[0];		/* resource argument */
	adp->arg_value = resource;
	adp->arg_object = NULL;
	adp->arg_type = AT_BYVAL;
	adp->arg_inout = AI_INPUT;
	adp->arg_size = 0;

	adp++;			/* rlp argument */
	adp->arg_value = 0;
	adp->arg_object = (void *)rlp;
	adp->arg_type = AT_BYREF;
	adp->arg_inout = AI_INPUT;
	adp->arg_size = sizeof (*rlp);

#ifdef _LP64
	if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
		sysnum = SYS_setrlimit64;
	else
		sysnum = SYS_setrlimit;
#else	/* _LP64 */
	sysnum = SYS_setrlimit;
#endif	/* _LP64 */

	error = Psyscall(Pr, &rval, sysnum, 2, &argd[0]);

	if (error) {
		errno = (error > 0)? error : ENOSYS;
		return (-1);
	}
	return (rval.sys_rval1);
}

/*
 * getrlimit64() system call -- executed by subject process.
 */
int
pr_getrlimit64(struct ps_prochandle *Pr,
	int resource, struct rlimit64 *rlp)
{
	sysret_t rval;			/* return value from getrlimit() */
	argdes_t argd[2];		/* arg descriptors for getrlimit() */
	argdes_t *adp;
	int sysnum;
	int error;

	if (Pr == NULL)		/* no subject process */
		return (getrlimit64(resource, rlp));

	adp = &argd[0];		/* resource argument */
	adp->arg_value = resource;
	adp->arg_object = NULL;
	adp->arg_type = AT_BYVAL;
	adp->arg_inout = AI_INPUT;
	adp->arg_size = 0;

	adp++;			/* rlp argument */
	adp->arg_value = 0;
	adp->arg_object = rlp;
	adp->arg_type = AT_BYREF;
	adp->arg_inout = AI_OUTPUT;
	adp->arg_size = sizeof (*rlp);

#ifdef _LP64
	if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
		sysnum = SYS_getrlimit64;
	else
		sysnum = SYS_getrlimit;
#else	/* _LP64 */
	sysnum = SYS_getrlimit64;
#endif	/* _LP64 */

	error = Psyscall(Pr, &rval, sysnum, 2, &argd[0]);

	if (error) {
		errno = (error > 0)? error : ENOSYS;
		return (-1);
	}
	return (rval.sys_rval1);
}

/*
 * setrlimit64() system call -- executed by subject process.
 */
int
pr_setrlimit64(struct ps_prochandle *Pr,
	int resource, const struct rlimit64 *rlp)
{
	sysret_t rval;			/* return value from setrlimit() */
	argdes_t argd[2];		/* arg descriptors for setrlimit() */
	argdes_t *adp;
	int sysnum;
	int error;

	if (Pr == NULL)		/* no subject process */
		return (setrlimit64(resource, rlp));

	adp = &argd[0];		/* resource argument */
	adp->arg_value = resource;
	adp->arg_object = NULL;
	adp->arg_type = AT_BYVAL;
	adp->arg_inout = AI_INPUT;
	adp->arg_size = 0;

	adp++;			/* rlp argument */
	adp->arg_value = 0;
	adp->arg_object = (void *)rlp;
	adp->arg_type = AT_BYREF;
	adp->arg_inout = AI_INPUT;
	adp->arg_size = sizeof (*rlp);

#ifdef _LP64
	if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
		sysnum = SYS_setrlimit64;
	else
		sysnum = SYS_setrlimit;
#else	/* _LP64 */
	sysnum = SYS_setrlimit64;
#endif	/* _LP64 */

	error = Psyscall(Pr, &rval, sysnum, 2, &argd[0]);

	if (error) {
		errno = (error > 0)? error : ENOSYS;
		return (-1);
	}
	return (rval.sys_rval1);
}