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 /* 23*0Sstevel@tonic-gate * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <stdio.h> 30*0Sstevel@tonic-gate #include <stdlib.h> 31*0Sstevel@tonic-gate #include <string.h> 32*0Sstevel@tonic-gate #include <limits.h> 33*0Sstevel@tonic-gate #include <sys/types.h> 34*0Sstevel@tonic-gate #include <svm.h> 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate /* 37*0Sstevel@tonic-gate * Macros to produce a quoted string containing the value of a 38*0Sstevel@tonic-gate * preprocessor macro. For example, if SIZE is defined to be 256, 39*0Sstevel@tonic-gate * VAL2STR(SIZE) is "256". This is used to construct format 40*0Sstevel@tonic-gate * strings for scanf-family functions below. 41*0Sstevel@tonic-gate */ 42*0Sstevel@tonic-gate #define QUOTE(x) #x 43*0Sstevel@tonic-gate #define VAL2STR(x) QUOTE(x) 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate /* 46*0Sstevel@tonic-gate * FUNCTION: 47*0Sstevel@tonic-gate * Return the driver name for a major number 48*0Sstevel@tonic-gate * 49*0Sstevel@tonic-gate * INPUT: major number, mount point for name_to_major file, pointer 50*0Sstevel@tonic-gate * to a valid buffer. 51*0Sstevel@tonic-gate * 52*0Sstevel@tonic-gate * RETURN VALUES: 53*0Sstevel@tonic-gate * 0 - SUCCESS - buf contain the driver name. 54*0Sstevel@tonic-gate * -1 - FAIL 55*0Sstevel@tonic-gate * 56*0Sstevel@tonic-gate */ 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate int 59*0Sstevel@tonic-gate get_drv_name(major_t major, char *mnt, char *buf) 60*0Sstevel@tonic-gate { 61*0Sstevel@tonic-gate FILE *fp; 62*0Sstevel@tonic-gate char drv[FILENAME_MAX + 1]; 63*0Sstevel@tonic-gate char entry[FILENAME_MAX + 1]; 64*0Sstevel@tonic-gate char line[MAX_N2M_ALIAS_LINE]; 65*0Sstevel@tonic-gate char fname[PATH_MAX]; 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate int status = RET_NOERROR; 68*0Sstevel@tonic-gate (void) snprintf(fname, sizeof (fname), "%s%s", mnt, NAME_TO_MAJOR); 69*0Sstevel@tonic-gate 70*0Sstevel@tonic-gate if ((fp = fopen(fname, "r")) == NULL) { 71*0Sstevel@tonic-gate return (RET_ERROR); 72*0Sstevel@tonic-gate } 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate while ((fgets(line, sizeof (line), fp) != NULL) && 75*0Sstevel@tonic-gate status == RET_NOERROR) { 76*0Sstevel@tonic-gate if (sscanf(line, 77*0Sstevel@tonic-gate "%" VAL2STR(FILENAME_MAX) "s %" VAL2STR(FILENAME_MAX) "s", 78*0Sstevel@tonic-gate drv, entry) != 2) { 79*0Sstevel@tonic-gate status = RET_ERROR; 80*0Sstevel@tonic-gate } 81*0Sstevel@tonic-gate if (atoi(entry) == major) 82*0Sstevel@tonic-gate break; 83*0Sstevel@tonic-gate 84*0Sstevel@tonic-gate } 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate if (status == RET_NOERROR) 87*0Sstevel@tonic-gate (void) strcpy(buf, drv); 88*0Sstevel@tonic-gate (void) fclose(fp); 89*0Sstevel@tonic-gate return (status); 90*0Sstevel@tonic-gate } 91