10Sstevel@tonic-gate /* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 50Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 60Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 70Sstevel@tonic-gate * with the License. 80Sstevel@tonic-gate * 90Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 100Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 110Sstevel@tonic-gate * See the License for the specific language governing permissions 120Sstevel@tonic-gate * and limitations under the License. 130Sstevel@tonic-gate * 140Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 150Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 160Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 170Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 180Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 190Sstevel@tonic-gate * 200Sstevel@tonic-gate * CDDL HEADER END 210Sstevel@tonic-gate */ 22*515Smeem 23*515Smeem /* 24*515Smeem * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 25*515Smeem * Use is subject to license terms. 26*515Smeem */ 27*515Smeem 280Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 290Sstevel@tonic-gate /* All Rights Reserved */ 300Sstevel@tonic-gate 31*515Smeem #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5 */ 320Sstevel@tonic-gate 33*515Smeem /* 340Sstevel@tonic-gate * Streams Command strconf: display the configuration of the 350Sstevel@tonic-gate * stream associated with stdin. 360Sstevel@tonic-gate * 370Sstevel@tonic-gate * USAGE: strconf 380Sstevel@tonic-gate * or: strconf -m module 390Sstevel@tonic-gate * or: strconf -t 400Sstevel@tonic-gate * 410Sstevel@tonic-gate * strconf with no options lists the modules on the stream. 420Sstevel@tonic-gate * -m module echos "yes" and returns 0 if the module is on the stream. 430Sstevel@tonic-gate * echos "no" and returns 2 if not. 440Sstevel@tonic-gate * -t lists only the topmost module. returns 0 if there is a 450Sstevel@tonic-gate * module, 2 if not. 460Sstevel@tonic-gate * 470Sstevel@tonic-gate * RETURNS: 480Sstevel@tonic-gate * 0 SUCCESS it works 490Sstevel@tonic-gate * 1 ERR_USAGE bad invocation 500Sstevel@tonic-gate * 2 ERR_MODULE module not there 510Sstevel@tonic-gate * 3 ERR_STDIN an ioctl on the stdin stream failed 520Sstevel@tonic-gate * 4 ERR_MEM couldn't allocate memory 530Sstevel@tonic-gate */ 540Sstevel@tonic-gate 550Sstevel@tonic-gate #include <stdio.h> 560Sstevel@tonic-gate #include <sys/stropts.h> 57*515Smeem #include <string.h> 58*515Smeem #include <stdlib.h> 59*515Smeem #include <unistd.h> 600Sstevel@tonic-gate 610Sstevel@tonic-gate #define OPTLIST "m:t" 62*515Smeem #define USAGE "USAGE: %s [ -m module | -t ]\n" 630Sstevel@tonic-gate 64*515Smeem #define SUCCESS 0 65*515Smeem #define FAILURE 1 660Sstevel@tonic-gate 670Sstevel@tonic-gate #define ERR_USAGE 1 /* bad invocation */ 680Sstevel@tonic-gate #define ERR_MODULE 2 /* module not there */ 690Sstevel@tonic-gate #define ERR_STDIN 3 /* an ioctl on the stdin stream failed */ 700Sstevel@tonic-gate #define ERR_MEM 4 /* couldn't allocate memory */ 710Sstevel@tonic-gate 720Sstevel@tonic-gate #define NMODULES 16 /* "reasonable" # of modules on a stream */ 730Sstevel@tonic-gate /* (there can be more) */ 740Sstevel@tonic-gate #define MAXMODULES 2048 /* max # of modules */ 750Sstevel@tonic-gate 76*515Smeem static char *Cmd_namep; /* how was it invoked? */ 77*515Smeem static int more_modules(struct str_list *, int); 780Sstevel@tonic-gate 79*515Smeem int 80*515Smeem main(int argc, char **argv) 810Sstevel@tonic-gate { 820Sstevel@tonic-gate char *modp; /* ptr to module name */ 83*515Smeem int i; /* loop var & junk (what else?) */ 84*515Smeem boolean_t mod_present; /* B_TRUE if -m module */ 85*515Smeem boolean_t topmost; /* B_TRUE if -t */ 86*515Smeem struct str_mlist mlist[NMODULES]; /* modlist for strlist */ 870Sstevel@tonic-gate struct str_list strlist; /* mods on stream */ 880Sstevel@tonic-gate 890Sstevel@tonic-gate /* 900Sstevel@tonic-gate * init 910Sstevel@tonic-gate */ 920Sstevel@tonic-gate Cmd_namep = argv[0]; 93*515Smeem mod_present = topmost = B_FALSE; 940Sstevel@tonic-gate strlist.sl_nmods = NMODULES; 950Sstevel@tonic-gate strlist.sl_modlist = mlist; 960Sstevel@tonic-gate 970Sstevel@tonic-gate /* 980Sstevel@tonic-gate * parse args 990Sstevel@tonic-gate */ 100*515Smeem if (argc > 1) { 101*515Smeem while ((i = getopt(argc, argv, OPTLIST)) != -1) { 102*515Smeem switch (i) { 103*515Smeem case 'm': /* module present ? */ 104*515Smeem modp = optarg; 105*515Smeem mod_present = B_TRUE; 106*515Smeem break; 1070Sstevel@tonic-gate 108*515Smeem case 't': /* list topmost */ 109*515Smeem topmost = B_TRUE; 110*515Smeem break; 1110Sstevel@tonic-gate 112*515Smeem default: 113*515Smeem (void) fprintf(stderr, USAGE, Cmd_namep); 114*515Smeem return (ERR_USAGE); 1150Sstevel@tonic-gate } 1160Sstevel@tonic-gate } 1170Sstevel@tonic-gate 118*515Smeem if (optind < argc) { 1190Sstevel@tonic-gate (void) fprintf(stderr, USAGE, Cmd_namep); 120*515Smeem return (ERR_USAGE); 1210Sstevel@tonic-gate } 1220Sstevel@tonic-gate } 1230Sstevel@tonic-gate 1240Sstevel@tonic-gate if (topmost && mod_present) { 1250Sstevel@tonic-gate (void) fprintf(stderr, 126*515Smeem "%s: [-t] and [-m] options cannot be used together\n", 127*515Smeem Cmd_namep); 1280Sstevel@tonic-gate (void) fprintf(stderr, USAGE, Cmd_namep); 129*515Smeem return (ERR_USAGE); 1300Sstevel@tonic-gate } 1310Sstevel@tonic-gate 1320Sstevel@tonic-gate /* 1330Sstevel@tonic-gate * get number of modules on stream 1340Sstevel@tonic-gate * allocate more room if needed 1350Sstevel@tonic-gate */ 136*515Smeem if ((i = ioctl(STDIN_FILENO, I_LIST, NULL)) < 0) { 1370Sstevel@tonic-gate perror("I_LIST"); 1380Sstevel@tonic-gate (void) fprintf(stderr, 1390Sstevel@tonic-gate "%s: I_LIST ioctl failed\n", Cmd_namep); 140*515Smeem return (ERR_STDIN); 1410Sstevel@tonic-gate } 142*515Smeem if (i > strlist.sl_nmods) 143*515Smeem if (more_modules(&strlist, i) != SUCCESS) 144*515Smeem return (ERR_MEM); 1450Sstevel@tonic-gate 1460Sstevel@tonic-gate /* 1470Sstevel@tonic-gate * get list of modules on stream 1480Sstevel@tonic-gate */ 1490Sstevel@tonic-gate strlist.sl_nmods = i; 150*515Smeem if (ioctl(STDIN_FILENO, I_LIST, &strlist) < 0) { 1510Sstevel@tonic-gate perror("I_LIST"); 152*515Smeem (void) fprintf(stderr, "%s: I_LIST ioctl failed\n", Cmd_namep); 153*515Smeem return (ERR_STDIN); 1540Sstevel@tonic-gate } 1550Sstevel@tonic-gate 1560Sstevel@tonic-gate /* 1570Sstevel@tonic-gate * list topmost module 1580Sstevel@tonic-gate */ 159*515Smeem if (topmost) { 160*515Smeem if (strlist.sl_nmods >= 2) { 161*515Smeem (void) puts(strlist.sl_modlist[0].l_name); 162*515Smeem return (SUCCESS); 1630Sstevel@tonic-gate } 164*515Smeem return (ERR_MODULE); 1650Sstevel@tonic-gate } 1660Sstevel@tonic-gate 1670Sstevel@tonic-gate /* 1680Sstevel@tonic-gate * check if module is present 1690Sstevel@tonic-gate */ 170*515Smeem if (mod_present) { 171*515Smeem for (i = 0; i < strlist.sl_nmods; i++) { 172*515Smeem if (strncmp(modp, strlist.sl_modlist[i].l_name, 173*515Smeem FMNAMESZ) == 0) { 174*515Smeem (void) puts("yes"); 175*515Smeem return (SUCCESS); 1760Sstevel@tonic-gate } 1770Sstevel@tonic-gate } 178*515Smeem (void) puts("no"); 179*515Smeem return (ERR_MODULE); 1800Sstevel@tonic-gate } 1810Sstevel@tonic-gate 1820Sstevel@tonic-gate /* 1830Sstevel@tonic-gate * print names of all modules and topmost driver on stream 1840Sstevel@tonic-gate */ 185*515Smeem for (i = 0; i < strlist.sl_nmods; i++) 186*515Smeem (void) puts(strlist.sl_modlist[i].l_name); 187*515Smeem return (SUCCESS); 1880Sstevel@tonic-gate } 1890Sstevel@tonic-gate 1900Sstevel@tonic-gate /* 1910Sstevel@tonic-gate * more_modules(listp, n) allocate space for 'n' modules in 'listp' 1920Sstevel@tonic-gate * 1930Sstevel@tonic-gate * returns: SUCCESS or FAILURE 1940Sstevel@tonic-gate */ 1950Sstevel@tonic-gate 1960Sstevel@tonic-gate static int 197*515Smeem more_modules(struct str_list *listp, int n) 1980Sstevel@tonic-gate { 199*515Smeem int i; 200*515Smeem struct str_mlist *modp; 2010Sstevel@tonic-gate 202*515Smeem if (n > MAXMODULES) { 2030Sstevel@tonic-gate (void) fprintf(stderr, 204*515Smeem "%s: too many modules (%d) -- max is %d\n", 205*515Smeem Cmd_namep, n, MAXMODULES); 206*515Smeem return (FAILURE); 2070Sstevel@tonic-gate } 2080Sstevel@tonic-gate 209*515Smeem if ((modp = calloc(n, sizeof (struct str_mlist))) == NULL) { 2100Sstevel@tonic-gate perror("calloc"); 2110Sstevel@tonic-gate (void) fprintf(stderr, 212*515Smeem "%s: failed to allocate space for module list\n", 213*515Smeem Cmd_namep); 214*515Smeem return (FAILURE); 2150Sstevel@tonic-gate } 2160Sstevel@tonic-gate 217*515Smeem for (i = 0; i < listp->sl_nmods; ++i) 2180Sstevel@tonic-gate (void) strncpy(modp[i].l_name, listp->sl_modlist[i].l_name, 219*515Smeem FMNAMESZ); 2200Sstevel@tonic-gate listp->sl_nmods = n; 2210Sstevel@tonic-gate listp->sl_modlist = modp; 222*515Smeem return (SUCCESS); 2230Sstevel@tonic-gate } 224