1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5 */ 27*0Sstevel@tonic-gate /* 28*0Sstevel@tonic-gate * Streams Command strconf: display the configuration of the 29*0Sstevel@tonic-gate * stream associated with stdin. 30*0Sstevel@tonic-gate * 31*0Sstevel@tonic-gate * USAGE: strconf 32*0Sstevel@tonic-gate * or: strconf -m module 33*0Sstevel@tonic-gate * or: strconf -t 34*0Sstevel@tonic-gate * 35*0Sstevel@tonic-gate * strconf with no options lists the modules on the stream. 36*0Sstevel@tonic-gate * -m module echos "yes" and returns 0 if the module is on the stream. 37*0Sstevel@tonic-gate * echos "no" and returns 2 if not. 38*0Sstevel@tonic-gate * -t lists only the topmost module. returns 0 if there is a 39*0Sstevel@tonic-gate * module, 2 if not. 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * RETURNS: 42*0Sstevel@tonic-gate * 0 SUCCESS it works 43*0Sstevel@tonic-gate * 1 ERR_USAGE bad invocation 44*0Sstevel@tonic-gate * 2 ERR_MODULE module not there 45*0Sstevel@tonic-gate * 3 ERR_STDIN an ioctl on the stdin stream failed 46*0Sstevel@tonic-gate * 4 ERR_MEM couldn't allocate memory 47*0Sstevel@tonic-gate */ 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate #include <stdio.h> 50*0Sstevel@tonic-gate #include <sys/stropts.h> 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate #define TRUE 1 53*0Sstevel@tonic-gate #define FALSE 0 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate #define OPTLIST "m:t" 56*0Sstevel@tonic-gate #define USAGE "USAGE: %s [ -m module | -t ]\n" 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate #define SUCCESS 0 59*0Sstevel@tonic-gate #define FAILURE 1 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate #define ERR_USAGE 1 /* bad invocation */ 62*0Sstevel@tonic-gate #define ERR_MODULE 2 /* module not there */ 63*0Sstevel@tonic-gate #define ERR_STDIN 3 /* an ioctl on the stdin stream failed */ 64*0Sstevel@tonic-gate #define ERR_MEM 4 /* couldn't allocate memory */ 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate #define NMODULES 16 /* "reasonable" # of modules on a stream */ 67*0Sstevel@tonic-gate /* (there can be more) */ 68*0Sstevel@tonic-gate #define MAXMODULES 2048 /* max # of modules */ 69*0Sstevel@tonic-gate 70*0Sstevel@tonic-gate #define STDIN 0 71*0Sstevel@tonic-gate #define SAME 0 /* return from str[n]cmp if match */ 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate static char *Cmd_namep; /* how was it invoked? */ 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate 77*0Sstevel@tonic-gate extern char *strcpy(); 78*0Sstevel@tonic-gate extern int getopt(); 79*0Sstevel@tonic-gate extern int ioctl(); 80*0Sstevel@tonic-gate extern int strncmp(); 81*0Sstevel@tonic-gate 82*0Sstevel@tonic-gate static int more_modules(); /* increase size of mod list */ 83*0Sstevel@tonic-gate 84*0Sstevel@tonic-gate main( argc, argv) 85*0Sstevel@tonic-gate int argc; 86*0Sstevel@tonic-gate char *argv[]; 87*0Sstevel@tonic-gate { 88*0Sstevel@tonic-gate char *modp; /* ptr to module name */ 89*0Sstevel@tonic-gate register int i; /* loop var & junk (what else?) */ 90*0Sstevel@tonic-gate short mod_present; /* TRUE if -m module */ 91*0Sstevel@tonic-gate short topmost; /* TRUE if -t */ 92*0Sstevel@tonic-gate struct str_mlist 93*0Sstevel@tonic-gate mlist[NMODULES];/* modlist for strlist */ 94*0Sstevel@tonic-gate struct str_list strlist; /* mods on stream */ 95*0Sstevel@tonic-gate 96*0Sstevel@tonic-gate extern char *optarg; /* for getopt() */ 97*0Sstevel@tonic-gate extern int optind; /* for getopt() */ 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate /* 100*0Sstevel@tonic-gate * init 101*0Sstevel@tonic-gate */ 102*0Sstevel@tonic-gate Cmd_namep = argv[0]; 103*0Sstevel@tonic-gate mod_present = topmost = FALSE; 104*0Sstevel@tonic-gate strlist.sl_nmods = NMODULES; 105*0Sstevel@tonic-gate strlist.sl_modlist = mlist; 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate /* 108*0Sstevel@tonic-gate * parse args 109*0Sstevel@tonic-gate */ 110*0Sstevel@tonic-gate if ( argc > 1) { 111*0Sstevel@tonic-gate while ( (i = getopt( argc, argv, OPTLIST)) != -1 ) { 112*0Sstevel@tonic-gate switch( i) { 113*0Sstevel@tonic-gate case 'm': /* module present ? */ 114*0Sstevel@tonic-gate modp = optarg; 115*0Sstevel@tonic-gate mod_present = TRUE; 116*0Sstevel@tonic-gate break; 117*0Sstevel@tonic-gate 118*0Sstevel@tonic-gate case 't': /* list topmost */ 119*0Sstevel@tonic-gate topmost = TRUE; 120*0Sstevel@tonic-gate break; 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate default: 123*0Sstevel@tonic-gate (void) fprintf(stderr, USAGE, Cmd_namep); 124*0Sstevel@tonic-gate return(ERR_USAGE); 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate } 127*0Sstevel@tonic-gate 128*0Sstevel@tonic-gate if ( optind < argc ) { 129*0Sstevel@tonic-gate (void) fprintf(stderr, USAGE, Cmd_namep); 130*0Sstevel@tonic-gate return(ERR_USAGE); 131*0Sstevel@tonic-gate } 132*0Sstevel@tonic-gate } 133*0Sstevel@tonic-gate 134*0Sstevel@tonic-gate if (topmost && mod_present) { 135*0Sstevel@tonic-gate (void) fprintf(stderr, 136*0Sstevel@tonic-gate "%s: [-t] and [-m] options cannot be used together\n", Cmd_namep); 137*0Sstevel@tonic-gate (void) fprintf(stderr, USAGE, Cmd_namep); 138*0Sstevel@tonic-gate return(ERR_USAGE); 139*0Sstevel@tonic-gate } 140*0Sstevel@tonic-gate 141*0Sstevel@tonic-gate /* 142*0Sstevel@tonic-gate * get number of modules on stream 143*0Sstevel@tonic-gate * allocate more room if needed 144*0Sstevel@tonic-gate */ 145*0Sstevel@tonic-gate if ( (i = ioctl(STDIN, I_LIST, (struct str_list *)NULL)) 146*0Sstevel@tonic-gate < 0 ) { 147*0Sstevel@tonic-gate perror("I_LIST"); 148*0Sstevel@tonic-gate (void) fprintf(stderr, 149*0Sstevel@tonic-gate "%s: I_LIST ioctl failed\n", Cmd_namep); 150*0Sstevel@tonic-gate return(ERR_STDIN); 151*0Sstevel@tonic-gate } 152*0Sstevel@tonic-gate if ( i > strlist.sl_nmods ) 153*0Sstevel@tonic-gate if ( more_modules(&strlist, i) != SUCCESS ) 154*0Sstevel@tonic-gate return(ERR_MEM); 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate /* 157*0Sstevel@tonic-gate * get list of modules on stream 158*0Sstevel@tonic-gate */ 159*0Sstevel@tonic-gate strlist.sl_nmods = i; 160*0Sstevel@tonic-gate if ( ioctl (0, I_LIST, &strlist) < 0) { 161*0Sstevel@tonic-gate perror("I_LIST"); 162*0Sstevel@tonic-gate (void) fprintf (stderr, "%s: I_LIST ioctl failed\n", Cmd_namep); 163*0Sstevel@tonic-gate return(ERR_STDIN); 164*0Sstevel@tonic-gate } 165*0Sstevel@tonic-gate 166*0Sstevel@tonic-gate /* 167*0Sstevel@tonic-gate * list topmost module 168*0Sstevel@tonic-gate */ 169*0Sstevel@tonic-gate if ( topmost ) { 170*0Sstevel@tonic-gate if ( strlist.sl_nmods >= 2 ) { 171*0Sstevel@tonic-gate (void) printf("%s\n", strlist.sl_modlist[0].l_name); 172*0Sstevel@tonic-gate return(SUCCESS); 173*0Sstevel@tonic-gate } 174*0Sstevel@tonic-gate return(ERR_MODULE); 175*0Sstevel@tonic-gate } 176*0Sstevel@tonic-gate 177*0Sstevel@tonic-gate /* 178*0Sstevel@tonic-gate * check if module is present 179*0Sstevel@tonic-gate */ 180*0Sstevel@tonic-gate if ( mod_present ) { 181*0Sstevel@tonic-gate for ( i = 0; i < strlist.sl_nmods; i++ ) { 182*0Sstevel@tonic-gate if ( strncmp(modp, strlist.sl_modlist[i].l_name, 183*0Sstevel@tonic-gate FMNAMESZ) == SAME ) { 184*0Sstevel@tonic-gate (void) printf("yes\n"); 185*0Sstevel@tonic-gate return(SUCCESS); 186*0Sstevel@tonic-gate } 187*0Sstevel@tonic-gate } 188*0Sstevel@tonic-gate (void) printf("no\n"); 189*0Sstevel@tonic-gate return(ERR_MODULE); 190*0Sstevel@tonic-gate } 191*0Sstevel@tonic-gate 192*0Sstevel@tonic-gate /* 193*0Sstevel@tonic-gate * print names of all modules and topmost driver on stream 194*0Sstevel@tonic-gate */ 195*0Sstevel@tonic-gate for ( i = 0; i < strlist.sl_nmods; i++ ) 196*0Sstevel@tonic-gate (void) printf("%s\n", strlist.sl_modlist[i].l_name); 197*0Sstevel@tonic-gate return(SUCCESS); 198*0Sstevel@tonic-gate } 199*0Sstevel@tonic-gate 200*0Sstevel@tonic-gate /* 201*0Sstevel@tonic-gate * more_modules(listp, n) allocate space for 'n' modules in 'listp' 202*0Sstevel@tonic-gate * 203*0Sstevel@tonic-gate * returns: SUCCESS or FAILURE 204*0Sstevel@tonic-gate */ 205*0Sstevel@tonic-gate 206*0Sstevel@tonic-gate static int 207*0Sstevel@tonic-gate more_modules(listp, n) 208*0Sstevel@tonic-gate struct str_list *listp; /* streams module list */ 209*0Sstevel@tonic-gate int n; /* # of modules */ 210*0Sstevel@tonic-gate { 211*0Sstevel@tonic-gate register int i; 212*0Sstevel@tonic-gate register struct str_mlist *modp; 213*0Sstevel@tonic-gate 214*0Sstevel@tonic-gate extern char *calloc(); 215*0Sstevel@tonic-gate 216*0Sstevel@tonic-gate if ( n > MAXMODULES ) { 217*0Sstevel@tonic-gate (void) fprintf(stderr, 218*0Sstevel@tonic-gate "%s: too many modules (%d) -- max is %d\n", 219*0Sstevel@tonic-gate Cmd_namep, n, MAXMODULES); 220*0Sstevel@tonic-gate return(FAILURE); 221*0Sstevel@tonic-gate } 222*0Sstevel@tonic-gate 223*0Sstevel@tonic-gate if ( (modp = (struct str_mlist *)calloc((unsigned)n, 224*0Sstevel@tonic-gate (unsigned)sizeof(struct str_mlist))) == (struct str_mlist *)NULL ) { 225*0Sstevel@tonic-gate perror("calloc"); 226*0Sstevel@tonic-gate (void) fprintf(stderr, 227*0Sstevel@tonic-gate "%s: failed to allocate space for module list\n", 228*0Sstevel@tonic-gate Cmd_namep); 229*0Sstevel@tonic-gate return(FAILURE); 230*0Sstevel@tonic-gate } 231*0Sstevel@tonic-gate 232*0Sstevel@tonic-gate for ( i = 0; i < listp->sl_nmods; ++i ) 233*0Sstevel@tonic-gate (void) strncpy(modp[i].l_name, listp->sl_modlist[i].l_name, 234*0Sstevel@tonic-gate FMNAMESZ); 235*0Sstevel@tonic-gate listp->sl_nmods = n; 236*0Sstevel@tonic-gate listp->sl_modlist = modp; 237*0Sstevel@tonic-gate return(SUCCESS); 238*0Sstevel@tonic-gate } 239