HCoop / hcoop / debian / openafs.git / blame
| Commit | Line | Data |
|---|---|---|
| 805e021f CE |
1 | /* |
| 2 | * Copyright 2000, International Business Machines Corporation and others. | |
| 3 | * All Rights Reserved. | |
| 4 | * | |
| 5 | * This software has been released under the terms of the IBM Public | |
| 6 | * License. For details, see the LICENSE file in the top-level source | |
| 7 | * directory or online at http://www.openafs.org/dl/license10.html | |
| 8 | */ | |
| 9 | ||
| 10 | /* | |
| 11 | * readdir.c - A minimal implementation of readdir to ease porting of AFS to | |
| 12 | * NT. Include dirent.h to pickup the required structs and prototypes. | |
| 13 | * | |
| 14 | * Implemented routines: | |
| 15 | * opendir | |
| 16 | * closedir | |
| 17 | * readdir | |
| 18 | */ | |
| 19 | #include <afsconfig.h> | |
| 20 | #include <afs/param.h> | |
| 21 | ||
| 22 | #include <roken.h> | |
| 23 | ||
| 24 | #include <afs/errmap_nt.h> | |
| 25 | #include <windows.h> | |
| 26 | #include <winbase.h> | |
| 27 | ||
| 28 | /* opendir() - The case insensitive version of opendir */ | |
| 29 | DIR * | |
| 30 | opendir(const char *path) | |
| 31 | { | |
| 32 | DIR *tDir; | |
| 33 | HANDLE tH; | |
| 34 | char tPath[MAX_PATH]; | |
| 35 | WIN32_FIND_DATA tData; | |
| 36 | int ntErr; | |
| 37 | ||
| 38 | (void)strcpy(tPath, path); | |
| 39 | (void)strcat(tPath, "\\*"); | |
| 40 | tH = FindFirstFile(tPath, &tData); | |
| 41 | ||
| 42 | if (tH == INVALID_HANDLE_VALUE) { | |
| 43 | ntErr = GetLastError(); | |
| 44 | switch (ntErr) { | |
| 45 | case ERROR_DIRECTORY: | |
| 46 | errno = ENOTDIR; | |
| 47 | return (DIR *) 0; | |
| 48 | case ERROR_BAD_PATHNAME: | |
| 49 | /* AFS NT client returns ERROR_BAD_PATHNAME where it should return | |
| 50 | * ERROR_DIRECTORY. | |
| 51 | */ | |
| 52 | case ERROR_FILE_NOT_FOUND: | |
| 53 | /* If at the "root" directory, then this can happen if it's empty. | |
| 54 | */ | |
| 55 | { | |
| 56 | struct stat status; | |
| 57 | size_t len = strlen(tPath) - 1; | |
| 58 | tPath[len] = '\0'; | |
| 59 | if (len >= 2 && tPath[len - 2] != ':') { | |
| 60 | tPath[len - 1] = '\0'; | |
| 61 | } | |
| 62 | if (stat(tPath, &status) < 0) { | |
| 63 | errno = nterr_nt2unix(GetLastError(), ENOENT); | |
| 64 | return (DIR *) 0; | |
| 65 | } | |
| 66 | if (!(status.st_mode & _S_IFDIR)) { | |
| 67 | errno = ENOTDIR; | |
| 68 | return (DIR *) 0; | |
| 69 | } | |
| 70 | } | |
| 71 | break; | |
| 72 | default: | |
| 73 | errno = nterr_nt2unix(GetLastError(), ENOENT); | |
| 74 | return (DIR *) 0; | |
| 75 | } | |
| 76 | } | |
| 77 | ||
| 78 | tDir = calloc(1, sizeof(DIR)); | |
| 79 | if (!tDir) { | |
| 80 | errno = ENOMEM; | |
| 81 | } else { | |
| 82 | tDir->h = tH; | |
| 83 | tDir->data = tData; | |
| 84 | } | |
| 85 | return tDir; | |
| 86 | } | |
| 87 | ||
| 88 | int | |
| 89 | closedir(DIR * dir) | |
| 90 | { | |
| 91 | if (!dir || !dir->h) { | |
| 92 | errno = EINVAL; | |
| 93 | return -1; | |
| 94 | } | |
| 95 | ||
| 96 | if (dir->h != INVALID_HANDLE_VALUE) | |
| 97 | FindClose(dir->h); | |
| 98 | free(dir); | |
| 99 | return 0; | |
| 100 | } | |
| 101 | ||
| 102 | struct dirent * | |
| 103 | readdir(DIR * dir) | |
| 104 | { | |
| 105 | int rc; | |
| 106 | ||
| 107 | if (!dir) { | |
| 108 | errno = EBADF; | |
| 109 | return (struct dirent *)0; | |
| 110 | } | |
| 111 | ||
| 112 | errno = 0; | |
| 113 | if (dir->h == INVALID_HANDLE_VALUE) | |
| 114 | return (struct dirent *)0; | |
| 115 | ||
| 116 | if (dir->first) { | |
| 117 | dir->first = 0; | |
| 118 | } else { | |
| 119 | while (rc = FindNextFile(dir->h, &dir->data)) { | |
| 120 | if ((strcmp(dir->data.cFileName, ".") == 0) | |
| 121 | || (strcmp(dir->data.cFileName, "..") == 0)) { | |
| 122 | ||
| 123 | continue; /* skip "." and ".." */ | |
| 124 | } | |
| 125 | break; /* found a non '.' or '..' entry. */ | |
| 126 | } | |
| 127 | if (rc == 0) { /* FindNextFile() failed */ | |
| 128 | if (GetLastError() == ERROR_NO_MORE_FILES) | |
| 129 | return (struct dirent *)0; | |
| 130 | else { | |
| 131 | errno = nterr_nt2unix(GetLastError(), EBADF); | |
| 132 | return (struct dirent *)0; | |
| 133 | } | |
| 134 | } | |
| 135 | } | |
| 136 | ||
| 137 | dir->cdirent.d_name = dir->data.cFileName; | |
| 138 | return &dir->cdirent; | |
| 139 | } |