pr_rename.c revision 8fd04b8338ed5093ec2d1e668fa620b7de44c177
/*
* 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 <errno.h>
#include "libproc.h"
/*
* rename() system call -- executed by subject process.
*/
int
pr_rename(struct ps_prochandle *Pr, const char *old, const char *new)
{
sysret_t rval;
argdes_t argd[4];
argdes_t *adp;
int error;
if (Pr == NULL)
return (rename(old, new));
adp = &argd[0]; /* old 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++; /* move to old argument */
adp->arg_value = 0;
adp->arg_object = (void *)old;
adp->arg_type = AT_BYREF;
adp->arg_inout = AI_INPUT;
adp->arg_size = strlen(old) + 1;
adp++; /* move to new 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++; /* move to new argument */
adp->arg_value = 0;
adp->arg_object = (void *)new;
adp->arg_type = AT_BYREF;
adp->arg_inout = AI_INPUT;
adp->arg_size = strlen(new) + 1;
error = Psyscall(Pr, &rval, SYS_renameat, 4, &argd[0]);
if (error) {
errno = (error > 0) ? error : ENOSYS;
return (-1);
}
return (rval.sys_rval1);
}
/*
* link() system call -- executed by subject process.
*/
int
pr_link(struct ps_prochandle *Pr, const char *existing, const char *new)
{
sysret_t rval;
argdes_t argd[2];
argdes_t *adp;
int error;
if (Pr == NULL)
return (link(existing, new));
adp = &argd[0]; /* existing argument */
adp->arg_value = 0;
adp->arg_object = (void *)existing;
adp->arg_type = AT_BYREF;
adp->arg_inout = AI_INPUT;
adp->arg_size = strlen(existing) + 1;
adp++; /* new argument */
adp->arg_value = 0;
adp->arg_object = (void *)new;
adp->arg_type = AT_BYREF;
adp->arg_inout = AI_INPUT;
adp->arg_size = strlen(new) + 1;
error = Psyscall(Pr, &rval, SYS_link, 2, &argd[0]);
if (error) {
errno = (error > 0) ? error : ENOSYS;
return (-1);
}
return (rval.sys_rval1);
}
/*
* unlink() system call -- executed by subject process.
*/
int
pr_unlink(struct ps_prochandle *Pr, const char *path)
{
sysret_t rval;
argdes_t argd[3];
argdes_t *adp;
int error;
if (Pr == NULL)
return (unlink(path));
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++; /* move to 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++; /* move to flags argument */
adp->arg_value = 0;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
error = Psyscall(Pr, &rval, SYS_unlinkat, 3, &argd[0]);
if (error) {
errno = (error > 0) ? error : ENOSYS;
return (-1);
}
return (rval.sys_rval1);
}