| /* Read the next entry of a directory. |
| Copyright (C) 2011-2021 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| #include <config.h> |
| |
| /* Specification. */ |
| #include <dirent.h> |
| |
| #include <errno.h> |
| #include <stddef.h> |
| |
| #include "dirent-private.h" |
| |
| /* Don't assume that UNICODE is not defined. */ |
| #undef FindNextFile |
| #define FindNextFile FindNextFileA |
| |
| struct dirent * |
| readdir (DIR *dirp) |
| { |
| char type; |
| struct dirent *result; |
| |
| /* There is no need to add code to produce entries for "." and "..". |
| According to the POSIX:2008 section "4.12 Pathname Resolution" |
| <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html> |
| "." and ".." are syntactic entities. |
| POSIX also says: |
| "If entries for dot or dot-dot exist, one entry shall be returned |
| for dot and one entry shall be returned for dot-dot; otherwise, |
| they shall not be returned." */ |
| |
| switch (dirp->status) |
| { |
| case -2: |
| /* End of directory already reached. */ |
| return NULL; |
| case -1: |
| break; |
| case 0: |
| if (!FindNextFile (dirp->current, &dirp->entry)) |
| { |
| switch (GetLastError ()) |
| { |
| case ERROR_NO_MORE_FILES: |
| dirp->status = -2; |
| return NULL; |
| default: |
| errno = EIO; |
| return NULL; |
| } |
| } |
| break; |
| default: |
| errno = dirp->status; |
| return NULL; |
| } |
| |
| dirp->status = 0; |
| |
| if (dirp->entry.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
| type = DT_DIR; |
| else if (dirp->entry.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) |
| type = DT_LNK; |
| else if ((dirp->entry.dwFileAttributes |
| & ~(FILE_ATTRIBUTE_READONLY |
| | FILE_ATTRIBUTE_HIDDEN |
| | FILE_ATTRIBUTE_SYSTEM |
| | FILE_ATTRIBUTE_ARCHIVE |
| | FILE_ATTRIBUTE_NORMAL |
| | FILE_ATTRIBUTE_TEMPORARY |
| | FILE_ATTRIBUTE_SPARSE_FILE |
| | FILE_ATTRIBUTE_COMPRESSED |
| | FILE_ATTRIBUTE_NOT_CONTENT_INDEXED |
| | FILE_ATTRIBUTE_ENCRYPTED)) == 0) |
| /* Devices like COM1, LPT1, NUL would also have the attributes 0x20 but |
| they cannot occur here. */ |
| type = DT_REG; |
| else |
| type = DT_UNKNOWN; |
| |
| /* Reuse the memory of dirp->entry for the result. */ |
| result = |
| (struct dirent *) |
| ((char *) dirp->entry.cFileName - offsetof (struct dirent, d_name[0])); |
| result->d_type = type; |
| |
| return result; |
| } |