1 /* $NetBSD: file.c,v 1.1.1.1 2009/12/13 16:57:16 kardel Exp $ */ 2 3 4 /* 5 * Id: 1410aaa5f08a562e0cd6c28ffae5a49dc7a3164f 6 * Time-stamp: "2009-07-23 17:23:46 bkorb" 7 * 8 * This file is part of AutoOpts, a companion to AutoGen. 9 * AutoOpts is free software. 10 * AutoOpts is copyright (c) 1992-2009 by Bruce Korb - all rights reserved 11 * 12 * AutoOpts is available under any one of two licenses. The license 13 * in use must be one of these two and the choice is under the control 14 * of the user of the license. 15 * 16 * The GNU Lesser General Public License, version 3 or later 17 * See the files "COPYING.lgplv3" and "COPYING.gplv3" 18 * 19 * The Modified Berkeley Software Distribution License 20 * See the file "COPYING.mbsd" 21 * 22 * These files have the following md5sums: 23 * 24 * 43b91e8ca915626ed3818ffb1b71248b pkg/libopts/COPYING.gplv3 25 * 06a1a2e4760c90ea5e1dad8dfaac4d39 pkg/libopts/COPYING.lgplv3 26 * 66a5cedaf62c4b2637025f049f9b826f pkg/libopts/COPYING.mbsd 27 */ 28 29 /*=export_func optionFileCheck 30 * private: 31 * 32 * what: Decipher a boolean value 33 * arg: + tOptions* + pOpts + program options descriptor + 34 * arg: + tOptDesc* + pOptDesc + the descriptor for this arg + 35 * arg: + teOptFileType + ftype + File handling type + 36 * arg: + tuFileMode + mode + file open mode (if needed) + 37 * 38 * doc: 39 * Make sure the named file conforms with the file type mode. 40 * The mode specifies if the file must exist, must not exist or may 41 * (or may not) exist. The mode may also specify opening the 42 * file: don't, open just the descriptor (fd), or open as a stream 43 * (FILE* pointer). 44 =*/ 45 void 46 optionFileCheck(tOptions* pOpts, tOptDesc* pOD, 47 teOptFileType ftype, tuFileMode mode) 48 { 49 if (pOpts <= OPTPROC_EMIT_LIMIT) { 50 if (pOpts != OPTPROC_EMIT_USAGE) 51 return; 52 53 switch (ftype & FTYPE_MODE_EXIST_MASK) { 54 case FTYPE_MODE_MUST_NOT_EXIST: 55 fputs(zFileCannotExist, option_usage_fp); 56 break; 57 58 case FTYPE_MODE_MUST_EXIST: 59 fputs(zFileMustExist, option_usage_fp); 60 break; 61 } 62 return; 63 } 64 65 if ((pOD->fOptState & OPTST_RESET) != 0) { 66 if (pOD->optCookie != NULL) 67 AGFREE(pOD->optCookie); 68 return; 69 } 70 71 { 72 struct stat sb; 73 74 errno = 0; 75 76 switch (ftype & FTYPE_MODE_EXIST_MASK) { 77 case FTYPE_MODE_MUST_NOT_EXIST: 78 if ( (stat(pOD->optArg.argString, &sb) == 0) 79 || (errno != ENOENT) ){ 80 if (errno == 0) 81 errno = EINVAL; 82 fprintf(stderr, zFSOptError, errno, strerror(errno), 83 zFSOptErrNoExist, pOD->optArg.argString, pOD->pz_Name); 84 pOpts->pUsageProc(pOpts, EXIT_FAILURE); 85 /* NOTREACHED */ 86 } 87 /* FALLTHROUGH */ 88 89 default: 90 case FTYPE_MODE_MAY_EXIST: 91 { 92 char * p = strrchr(pOD->optArg.argString, DIRCH); 93 if (p != NULL) 94 *p = NUL; 95 if ( (stat(pOD->optArg.argString, &sb) != 0) 96 || (errno = EINVAL, ! S_ISDIR(sb.st_mode)) ){ 97 fprintf(stderr, zFSOptError, errno, strerror(errno), 98 zFSOptErrMayExist, pOD->optArg.argString, pOD->pz_Name); 99 pOpts->pUsageProc(pOpts, EXIT_FAILURE); 100 /* NOTREACHED */ 101 } 102 if (p != NULL) 103 *p = DIRCH; 104 break; 105 } 106 107 case FTYPE_MODE_MUST_EXIST: 108 if ( (stat(pOD->optArg.argString, &sb) != 0) 109 || (errno = EINVAL, ! S_ISREG(sb.st_mode)) ){ 110 fprintf(stderr, zFSOptError, errno, strerror(errno), 111 zFSOptErrMustExist, pOD->optArg.argString, 112 pOD->pz_Name); 113 pOpts->pUsageProc(pOpts, EXIT_FAILURE); 114 /* NOTREACHED */ 115 } 116 break; 117 } 118 } 119 120 switch (ftype & FTYPE_MODE_OPEN_MASK) { 121 default: 122 case FTYPE_MODE_NO_OPEN: 123 break; 124 125 case FTYPE_MODE_OPEN_FD: 126 { 127 int fd = open(pOD->optArg.argString, mode.file_flags); 128 if (fd < 0) { 129 fprintf(stderr, zFSOptError, errno, strerror(errno), 130 zFSOptErrOpen, pOD->optArg.argString, pOD->pz_Name); 131 pOpts->pUsageProc(pOpts, EXIT_FAILURE); 132 /* NOTREACHED */ 133 } 134 135 if ((pOD->fOptState & OPTST_ALLOC_ARG) != 0) 136 pOD->optCookie = (void *)pOD->optArg.argString; 137 else 138 AGDUPSTR(pOD->optCookie, pOD->optArg.argString, "file name"); 139 140 pOD->optArg.argFd = fd; 141 pOD->fOptState &= ~OPTST_ALLOC_ARG; 142 break; 143 } 144 145 case FTYPE_MODE_FOPEN_FP: 146 { 147 FILE* fp = fopen(pOD->optArg.argString, mode.file_mode); 148 if (fp == NULL) { 149 fprintf(stderr, zFSOptError, errno, strerror(errno), 150 zFSOptErrFopen, pOD->optArg.argString, pOD->pz_Name); 151 pOpts->pUsageProc(pOpts, EXIT_FAILURE); 152 /* NOTREACHED */ 153 } 154 155 if ((pOD->fOptState & OPTST_ALLOC_ARG) != 0) 156 pOD->optCookie = (void *)pOD->optArg.argString; 157 else 158 AGDUPSTR(pOD->optCookie, pOD->optArg.argString, "file name"); 159 160 pOD->optArg.argFp = fp; 161 pOD->fOptState &= ~OPTST_ALLOC_ARG; 162 break; 163 } 164 } 165 } 166 /* 167 * Local Variables: 168 * mode: C 169 * c-file-style: "stroustrup" 170 * indent-tabs-mode: nil 171 * End: 172 * end of autoopts/file.c */ 173