/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include "libproc.h"
/*
* open() system call -- executed by subject process.
*/
int
pr_open(struct ps_prochandle *Pr, const char *filename, int flags, mode_t mode)
{
sysret_t rval; /* return value from openat() */
argdes_t argd[4]; /* arg descriptors for openat() */
argdes_t *adp;
int error;
if (Pr == NULL) /* no subject process */
return (open(filename, flags, mode));
adp = &argd[0]; /* AT_FDCWD argument */
adp->arg_value = AT_FDCWD;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
adp++; /* filename argument */
adp->arg_value = 0;
adp->arg_object = (void *)filename;
adp->arg_type = AT_BYREF;
adp->arg_inout = AI_INPUT;
adp->arg_size = strlen(filename)+1;
adp++; /* flags argument */
adp->arg_value = (long)flags;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
adp++; /* mode argument */
adp->arg_value = (long)mode;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
error = Psyscall(Pr, &rval, SYS_openat, 4, &argd[0]);
if (error) {
errno = (error > 0)? error : ENOSYS;
return (-1);
}
return (rval.sys_rval1);
}
/*
* creat() system call -- executed by subject process.
*/
int
pr_creat(struct ps_prochandle *Pr, const char *filename, mode_t mode)
{
sysret_t rval; /* return value from openat() */
argdes_t argd[4]; /* arg descriptors for openat() */
argdes_t *adp;
int error;
if (Pr == NULL) /* no subject process */
return (creat(filename, mode));
adp = &argd[0]; /* AT_FDCWD argument */
adp->arg_value = AT_FDCWD;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
adp++; /* filename argument */
adp->arg_value = 0;
adp->arg_object = (void *)filename;
adp->arg_type = AT_BYREF;
adp->arg_inout = AI_INPUT;
adp->arg_size = strlen(filename)+1;
adp++; /* flags argument */
adp->arg_value = (O_WRONLY | O_CREAT | O_TRUNC);
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
adp++; /* mode argument */
adp->arg_value = (long)mode;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
error = Psyscall(Pr, &rval, SYS_openat, 4, &argd[0]);
if (error) {
errno = (error > 0)? error : ENOSYS;
return (-1);
}
return (rval.sys_rval1);
}
/*
* close() system call -- executed by subject process.
*/
int
pr_close(struct ps_prochandle *Pr, int fd)
{
sysret_t rval; /* return value from close() */
argdes_t argd[1]; /* arg descriptors for close() */
argdes_t *adp;
int error;
if (Pr == NULL) /* no subject process */
return (close(fd));
adp = &argd[0]; /* fd argument */
adp->arg_value = (int)fd;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
error = Psyscall(Pr, &rval, SYS_close, 1, &argd[0]);
if (error) {
errno = (error > 0)? error : ENOSYS;
return (-1);
}
return (rval.sys_rval1);
}
/*
* access() system call -- executed by subject process.
*/
int
pr_access(struct ps_prochandle *Pr, const char *path, int amode)
{
sysret_t rval; /* return from access() */
argdes_t argd[4]; /* arg descriptors for access() */
argdes_t *adp;
int err;
if (Pr == NULL) /* no subject process */
return (access(path, amode));
adp = &argd[0]; /* directory fd argument */
adp->arg_value = AT_FDCWD;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
adp++; /* path argument */
adp->arg_value = 0;
adp->arg_object = (void *)path;
adp->arg_type = AT_BYREF;
adp->arg_inout = AI_INPUT;
adp->arg_size = strlen(path) + 1;
adp++; /* amode argument */
adp->arg_value = (long)amode;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
adp++; /* flag argument */
adp->arg_value = 0;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
err = Psyscall(Pr, &rval, SYS_faccessat, 4, &argd[0]);
if (err) {
errno = (err > 0) ? err : ENOSYS;
return (-1);
}
return (rval.sys_rval1);
}