1/* 2 * Copyright (c) 2001-2007 Apple Inc. All Rights Reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23/* 24 * BLGetCommonMountPoint.c 25 * bless 26 * 27 * Created by Shantonu Sen <ssen@apple.com> on Tue Apr 17 2001. 28 * Copyright (c) 2001-2007 Apple Inc. All Rights Reserved. 29 * 30 * $Id: BLGetCommonMountPoint.c,v 1.14 2006/02/20 22:49:56 ssen Exp $ 31 * 32 */ 33 34#include <stdio.h> 35#include <string.h> 36#include <sys/stat.h> 37#include <sys/param.h> 38#include <sys/mount.h> 39 40#include "bless.h" 41#include "bless_private.h" 42 43int BLGetCommonMountPoint(BLContextPtr context, const char * f1, 44 const char * f2, char * mountp) { 45 46 struct statfs fsinfo; 47 int err; 48 char f2mount[MNAMELEN]; 49 50 if(f1[0] != '\0') { 51 err = statfs(f1, &fsinfo); 52 if(err) { 53 contextprintf(context, kBLLogLevelError, "No mount point for %s\n", f1 ); 54 return 1; 55 } else { 56 strncpy(mountp, fsinfo.f_mntonname, MNAMELEN-1); 57 mountp[MNAMELEN-1] = '\0'; 58 contextprintf(context, kBLLogLevelVerbose, "Mount point for %s is %s\n", f1, mountp ); 59 } 60 } 61 62 if(f2[0] != '\0') { 63 err = statfs(f2, &fsinfo); 64 if(err) { 65 contextprintf(context, kBLLogLevelError, "No mount point for %s\n", f2 ); 66 return 2; 67 } else { 68 strncpy(f2mount, fsinfo.f_mntonname, MNAMELEN-1); 69 f2mount[MNAMELEN-1] = '\0'; 70 contextprintf(context, kBLLogLevelVerbose, "Mount point for %s is %s\n", f2, f2mount ); 71 } 72 } 73 74 /* Now we have the mount points of any folders that were passed 75 * in. We must determine: 76 * 1) if f1 && f2, find a common mount point or err 77 * 2) if f2 && !f1, copy f2mount -> mountp 78 * 3) if f1 && !f2, just return success 79 */ 80 81 if(f2[0] != '\0') { 82 /* Case 1, 2 */ 83 if(f1[0] != '\0') { 84 /* Case 1 */ 85 if(strcmp(mountp, f2mount)) { 86 /* no common */ 87 mountp[0] = '\0'; 88 return 3; 89 } else { 90 /* yay common */ 91 return 0; 92 } 93 } else { 94 /* Case 2 */ 95 96 /* We know each buffer is <MNAMELEN and 0-terminated */ 97 strncpy(mountp, f2mount, MNAMELEN); 98 return 0; 99 } 100 } else { 101 /* Case 3 */ 102 return 0; 103 } 104 105 contextprintf(context, kBLLogLevelError, "No folders specified" ); 106 return 4; 107} 108