listdgrp.c revision 113f42324b1acf3e5144da27ddbda36e338fbd07
/*
* 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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* listdgrp.c
*
* Contains
* listdgrp Writes on the standard output stream a list of devices
* that belong to the specified device group
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <devmgmt.h>
#include <devtab.h>
#include <fmtmsg.h>
/*
* Local Definitions
* TRUE Boolean TRUE value (if not already defined)
* FALSE Boolean not-TRUE value (if not already defined)
*/
#ifndef TRUE
#define TRUE ('t')
#endif
#ifndef FALSE
#define FALSE (0)
#endif
/*
* Messages:
* M_USAGE Command usage error
* M_NODGRP Device group not found
* M_DGRPTAB Device-group table not found
* M_ERROR Internal error
*/
#define M_USAGE "usage: listdgrp dgroup"
#define M_NODGRP "Device group not found: %s"
#define M_DGRPTAB "Cannot open device-group table: %s"
#define M_ERROR "Internal error, errno=%d"
/*
* Exit codes
* EX_OK Exiting okay, no problem
* EX_ERROR Some problem with the command
* EX_NODGRPTAB Device group table could not be opened
* EX_NODGROUP Device group couldn't be found
*/
#define EX_OK 0
#define EX_ERROR 1
#define EX_NODGRPTAB 2
#define EX_NODGROUP 3
/*
* Macros
* stdmsg(r,l,s,t) Write a message in standard format
* r Recoverability flag
* l Label
* s Severity
* t Tag
*/
#define stdmsg(r,l,s,t) (void) fmtmsg(MM_PRINT|MM_UTIL|r,l,s,t,MM_NULLACT,MM_NULLTAG)
/*
* Global Variables
*/
/*
* Static Variables
*
* lbl Buffer for the message label
*/
static char lbl[MM_MXLABELLN+1];
static char msg[MM_MXTXTLN+1];
/*
* listdgrp <dgroup>
*
* List the devices that belong to the device group <dgroup>.
* It writes the list to the standard output file (stdout)
* in a new-line list.
*
* Returns:
* 0 Ok
* 1 Syntax or other error
* 2 Device table can't be opened
* 3 Device group doesn't exist
*/
int
main(int argc, char **argv)
{
/*
* Automatic data
*/
char **devices; /* List of devices in the group */
char **pp; /* Running pointer to device names */
char *cmdname; /* Simple command name */
char *dgrptab; /* The device-group table name */
char *dgroup; /* Device group to list */
int exitcode; /* Value to return to the caller */
int sev; /* Message severity */
int optchar; /* Option char (from getopt()) */
int usageerr; /* TRUE if syntax error on command */
/* Build the message label from the (simple) command name */
if ((cmdname = strrchr(argv[0], '/')) != (char *) NULL) cmdname++;
else cmdname = argv[0];
(void) strlcat(strcpy(lbl, "UX:"), cmdname, sizeof(lbl));
/* Only write the text component of a message (this goes away in SVR4.1) */
(void) putenv("MSGVERB=text");
/*
* Parse the command line:
* - Options
* - Device group to display
*/
/*
* Extract options from the command line
*/
/* Initializations */
usageerr = FALSE; /* No errors on the command line (yet) */
/*
* Loop until all of the command line options have been parced
* (and don't let getopt() write messages)
*/
opterr = FALSE;
while ((optchar = getopt(argc, argv, "")) != EOF) switch (optchar) {
/* Default case -- command usage error */
case '?':
default:
usageerr = TRUE;
break;
}
/* Check the argument count and extract the device group name */
if (usageerr || (optind != argc-1)) usageerr = TRUE;
else dgroup = argv[optind];
/* If there is a usage error, write an appropriate message and exit */
if (usageerr) {
stdmsg(MM_NRECOV, lbl, MM_ERROR, M_USAGE);
exit(EX_ERROR);
}
/* Open the device-group file (if there's one to be opened) */
if (!_opendgrptab("r")) {
if (dgrptab = _dgrptabpath()) {
(void) snprintf(msg, sizeof(msg), M_DGRPTAB, dgrptab);
exitcode = EX_NODGRPTAB;
sev = MM_ERROR;
} else {
(void) sprintf(msg, M_ERROR, errno);
exitcode = EX_ERROR;
sev = MM_HALT;
}
stdmsg(MM_NRECOV, lbl, sev, msg);
exit(exitcode);
}
/*
* Get the list of devices associated with the device group.
* If we get one, write the list to the standard output.
* Otherwise, write an appropriate error message
*/
exitcode = EX_OK;
if (devices = listdgrp(dgroup)) {
for (pp = devices ; *pp ; pp++) (void) puts(*pp);
}
else {
if (errno == EINVAL) {
(void) snprintf(msg, sizeof(msg), M_NODGRP, dgroup);
stdmsg(MM_NRECOV, lbl, MM_ERROR, msg);
exitcode = EX_NODGROUP;
}
else {
(void) sprintf(msg, M_ERROR, errno);
stdmsg(MM_NRECOV, lbl, MM_HALT, msg);
exitcode = EX_ERROR;
}
}
/* Finished (now wasn't that special?) */
return(exitcode);
}