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/*
* 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.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/isa_defs.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include "libproc.h"
/*
* fcntl() system call -- executed by subject process.
*/
int
pr_fcntl(struct ps_prochandle *Pr, int fd, int cmd, void *argp)
{
sysret_t rval; /* return value from fcntl() */
argdes_t argd[3]; /* arg descriptors for fcntl() */
argdes_t *adp;
int error;
if (Pr == NULL) /* no subject process */
return (fcntl(fd, cmd, argp));
adp = &argd[0]; /* file descriptor argument */
adp->arg_value = fd;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
adp++; /* cmd argument */
#ifdef _LP64
if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32) {
/*
* Guilty knowledge of the large file compilation environment
*/
switch (cmd) {
case F_GETLK:
cmd = 33;
break;
case F_SETLK:
cmd = 34;
break;
case F_SETLKW:
cmd = 35;
break;
case F_FREESP:
cmd = 27;
break;
}
}
#endif /* _LP64 */
adp->arg_value = cmd;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
adp++; /* argp argument */
if (argp == NULL) {
adp->arg_value = 0;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
} else {
adp->arg_value = 0;
adp->arg_object = argp;
adp->arg_type = AT_BYREF;
adp->arg_inout = AI_INOUT;
switch (cmd) {
case F_GETLK:
case F_SETLK:
case F_SETLKW:
case F_ALLOCSP:
case F_FREESP:
adp->arg_size = sizeof (struct flock);
break;
#ifdef _LP64
case 33:
case 34:
case 35:
case 27:
adp->arg_size = sizeof (struct flock64_32);
#else /* _LP64 */
case F_GETLK64:
case F_SETLK64:
case F_SETLKW64:
case F_FREESP64:
adp->arg_size = sizeof (struct flock64);
#endif /* _LP64 */
break;
case F_SHARE:
case F_UNSHARE:
adp->arg_size = sizeof (struct fshare);
break;
default:
adp->arg_value = (long)argp;
adp->arg_object = NULL;
adp->arg_type = AT_BYVAL;
adp->arg_inout = AI_INPUT;
adp->arg_size = 0;
break;
}
}
error = Psyscall(Pr, &rval, SYS_fcntl, 3, &argd[0]);
if (error) {
errno = (error > 0)? error : ENOSYS;
return (-1);
}
return (rval.sys_rval1);
}
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