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/* |
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* PearPC |
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* sysfile.cc - file system functions for Win32 |
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* |
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* Copyright (C) 1999-2004 Sebastian Biallas (sb@biallas.net) |
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* Copyright (C) 1999-2002 Stefan Weyergraf |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#include <cctype> |
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#include <cerrno> |
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#include <cstdlib> |
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#include <cstdio> |
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#include <sys/stat.h> |
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|
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#include "system/file.h" |
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#include "system/sys.h" |
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|
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#ifndef WIN32_LEAN_AND_MEAN |
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#define WIN32_LEAN_AND_MEAN |
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#endif |
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#include <windows.h> |
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|
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#ifndef S_IFMT |
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#define S_IFMT 0xf000 |
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#endif |
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|
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#ifndef S_ISREG |
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# ifndef S_IFREG |
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# define S_ISREG(m) (0) |
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# else |
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# define S_ISREG(m) (((m) & S_IFMT)==S_IFREG) |
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# endif |
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#endif |
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|
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#ifndef S_ISBLK |
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# ifndef S_IFBLK |
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# define S_ISBLK(m) (0) |
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# else |
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# define S_ISBLK(m) (((m) & S_IFMT)==S_IFBLK) |
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# endif |
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#endif |
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|
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|
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#ifndef S_ISCHR |
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# ifndef S_IFCHR |
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# define S_ISCHR(m) (0) |
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# else |
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# define S_ISCHR(m) (((m) & S_IFMT)==S_IFCHR) |
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# endif |
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#endif |
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|
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#ifndef S_ISDIR |
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# ifndef S_IFDIR |
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# define S_ISDIR(m) (0) |
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# else |
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# define S_ISDIR(m) (((m) & S_IFMT)==S_IFDIR) |
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# endif |
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#endif |
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|
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#ifndef S_ISFIFO |
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# ifndef S_IFFIFO |
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# define S_ISFIFO(m) (0) |
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# else |
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# define S_ISFIFO(m) (((m) & S_IFMT)==S_IFFIFO) |
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# endif |
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#endif |
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|
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#ifndef S_ISLNK |
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# ifndef S_IFLNK |
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# define S_ISLNK(m) (0) |
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# else |
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# define S_ISLNK(m) (((m) & S_IFMT)==S_IFLNK) |
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# endif |
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#endif |
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|
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#ifndef S_ISSOCK |
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# ifndef S_IFSOCK |
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# define S_ISSOCK(m) (0) |
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# else |
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# define S_ISSOCK(m) (((m) & S_IFMT)==S_IFSOCK) |
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# endif |
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#endif |
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|
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#ifndef S_IRUSR |
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#define S_IRUSR 0 |
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#endif |
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#ifndef S_IRGRP |
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#define S_IRGRP 0 |
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#endif |
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#ifndef S_IROTH |
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#define S_IROTH 0 |
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#endif |
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|
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#ifndef S_IWUSR |
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#define S_IWUSR 0 |
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#endif |
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#ifndef S_IWGRP |
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#define S_IWGRP 0 |
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#endif |
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#ifndef S_IWOTH |
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#define S_IWOTH 0 |
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#endif |
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|
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#ifndef S_IXUSR |
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#define S_IXUSR 0 |
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#endif |
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#ifndef S_IXGRP |
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#define S_IXGRP 0 |
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#endif |
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#ifndef S_IXOTH |
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#define S_IXOTH 0 |
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#endif |
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|
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|
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struct winfindstate { |
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HANDLE fhandle; |
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WIN32_FIND_DATA find_data; |
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}; |
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|
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int sys_file_mode(int mode) |
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{ |
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int m = 0; |
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if (S_ISREG(mode)) { |
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m |= HT_S_IFREG; |
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} else if (S_ISBLK(mode)) { |
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m |= HT_S_IFBLK; |
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} else if (S_ISCHR(mode)) { |
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m |= HT_S_IFCHR; |
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} else if (S_ISDIR(mode)) { |
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m |= HT_S_IFDIR; |
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} else if (S_ISFIFO(mode)) { |
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m |= HT_S_IFFIFO; |
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} else if (S_ISLNK(mode)) { |
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m |= HT_S_IFLNK; |
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} else if (S_ISSOCK(mode)) { |
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m |= HT_S_IFSOCK; |
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} |
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if (mode & S_IRUSR) m |= HT_S_IRUSR; |
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if (mode & S_IRGRP) m |= HT_S_IRGRP; |
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if (mode & S_IROTH) m |= HT_S_IROTH; |
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|
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if (mode & S_IWUSR) m |= HT_S_IWUSR; |
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if (mode & S_IWGRP) m |= HT_S_IWGRP; |
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if (mode & S_IWOTH) m |= HT_S_IWOTH; |
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|
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if (mode & S_IXUSR) m |= HT_S_IXUSR; |
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if (mode & S_IXGRP) m |= HT_S_IXGRP; |
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if (mode & S_IXOTH) m |= HT_S_IXOTH; |
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return m; |
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} |
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|
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bool sys_filename_is_absolute(const char *filename) |
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{ |
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if (strlen(filename) < 3) return false; |
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return (isalpha(filename[0]) && (filename[1] == ':') && |
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sys_is_path_delim(filename[2])); |
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} |
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|
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int sys_canonicalize(char *result, const char *filename) |
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{ |
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if (!sys_filename_is_absolute(filename)) return ENOENT; |
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char *dunno; |
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return (GetFullPathName(filename, HT_NAME_MAX, result, &dunno) > 0) ? 0 : ENOENT; |
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} |
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|
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uint filetime_to_ctime(FILETIME f) |
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{ |
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uint64 q; |
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q = ((uint64)f.dwHighDateTime<<32)|((uint64)f.dwLowDateTime); |
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q = q / 10000000ULL; // 100 nano-sec to full sec |
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return q + 1240431886; // MAGIC: this is 1.1.1970 minus 1.1.1601 in seconds |
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} |
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|
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void sys_findfill(pfind_t &pfind) |
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{ |
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/*DWORD dwFileAttributes; |
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FILETIME ftCreationTime; |
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FILETIME ftLastAccessTime; |
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FILETIME ftLastWriteTime; |
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DWORD nFileSizeHigh; |
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DWORD nFileSizeLow; |
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DWORD dwReserved0; |
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DWORD dwReserved1; |
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TCHAR cFileName[ MAX_PATH ]; |
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TCHAR cAlternateFileName[ 14 ];*/ |
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winfindstate *wfs=(winfindstate*)pfind.findstate; |
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pfind.name = (char *)&wfs->find_data.cFileName; |
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pfind.stat.caps = pstat_ctime|pstat_mtime|pstat_atime|pstat_size|pstat_mode_type; |
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|
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pfind.stat.size = wfs->find_data.nFileSizeLow | (((uint64)wfs->find_data.nFileSizeHigh) << 32); |
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|
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pfind.stat.mode = (wfs->find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? HT_S_IFDIR : HT_S_IFREG; |
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pfind.stat.ctime = filetime_to_ctime(wfs->find_data.ftCreationTime); |
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pfind.stat.mtime = filetime_to_ctime(wfs->find_data.ftLastWriteTime); |
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pfind.stat.atime = filetime_to_ctime(wfs->find_data.ftLastAccessTime); |
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} |
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|
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int sys_findfirst(pfind_t &pfind, const char *dirname) |
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{ |
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if (!sys_filename_is_absolute(dirname)) return ENOENT; |
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char *Dirname = (char *)malloc(strlen(dirname)+5); |
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strcpy(Dirname, dirname); |
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int dnl=strlen(dirname); |
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if ((dirname[dnl-1]!='\\') && (dirname[dnl-1]!='/')) { |
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Dirname[dnl]='\\'; |
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Dirname[dnl+1]=0; |
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} |
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char *s=Dirname; |
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while ((s=strchr(s, '/'))) *s='\\'; |
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strcat(Dirname, "*.*"); |
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|
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pfind.findstate=malloc(sizeof (winfindstate)); |
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winfindstate *wfs=(winfindstate*)pfind.findstate; |
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|
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wfs->fhandle = FindFirstFile(Dirname, &wfs->find_data); |
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free(Dirname); |
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if (wfs->fhandle == INVALID_HANDLE_VALUE) { |
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free(pfind.findstate); |
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return ENOENT; |
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} |
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sys_findfill(pfind); |
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return 0; |
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} |
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|
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int sys_findnext(pfind_t &pfind) |
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{ |
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winfindstate *wfs=(winfindstate*)pfind.findstate; |
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|
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if (!FindNextFile(wfs->fhandle, &wfs->find_data)) { |
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return ENOENT; |
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} |
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sys_findfill(pfind); |
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return 0; |
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} |
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|
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int sys_findclose(pfind_t &pfind) |
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{ |
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int r=FindClose(((winfindstate*)pfind.findstate)->fhandle); |
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free(pfind.findstate); |
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return r ? ENOENT : 0; |
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} |
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|
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static void stat_to_pstat_t(const struct stat &st, pstat_t &s) |
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{ |
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s.caps = pstat_ctime|pstat_mtime|pstat_atime|pstat_uid|pstat_gid|pstat_mode_all|pstat_size|pstat_inode; |
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s.ctime = st.st_ctime; |
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s.mtime = st.st_mtime; |
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s.atime = st.st_atime; |
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s.gid = st.st_uid; |
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s.uid = st.st_gid; |
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s.mode = sys_file_mode(st.st_mode); |
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s.size = st.st_size; |
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s.fsid = st.st_ino; |
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} |
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|
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int sys_pstat(pstat_t &s, const char *filename) |
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{ |
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if (!sys_filename_is_absolute(filename)) return ENOENT; |
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struct stat st; |
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int e = stat(filename, &st); |
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if (e) return errno ? errno : ENOENT; |
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stat_to_pstat_t(st, s); |
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return 0; |
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} |
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|
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int sys_pstat_fd(pstat_t &s, int fd) |
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{ |
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struct stat st; |
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int e = fstat(fd, &st); |
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if (e) return errno ? errno : ENOENT; |
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stat_to_pstat_t(st, s); |
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return 0; |
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} |
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|
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void sys_suspend() |
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{ |
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Sleep(0); |
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} |
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|
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/*int sys_get_free_mem() |
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{ |
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return 0; |
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}*/ |
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|
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int sys_truncate(const char *filename, FileOfs ofs) |
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{ |
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if (!sys_filename_is_absolute(filename)) return ENOENT; |
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HANDLE hfile = CreateFile(filename, GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
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if (hfile == INVALID_HANDLE_VALUE) { |
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return EIO; |
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} |
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// FIXME: uint64 |
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if (SetFilePointer(hfile, ofs, NULL, FILE_BEGIN)==0xffffffff) { |
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CloseHandle(hfile); |
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return EIO; |
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} |
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if (!SetEndOfFile(hfile)) { |
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CloseHandle(hfile); |
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return EIO; |
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} |
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CloseHandle(hfile); |
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return 0; |
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} |
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|
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int sys_truncate_fd(int fd, FileOfs ofs) |
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{ |
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return ENOSYS; |
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} |
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|
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int sys_deletefile(const char *filename) |
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{ |
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if (!sys_filename_is_absolute(filename)) return ENOENT; |
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if (DeleteFile(filename)) { |
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return 0; |
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} |
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return EIO; |
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} |
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|
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bool sys_is_path_delim(char c) |
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{ |
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return (c == '\\'); |
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} |
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|
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int sys_filename_cmp(const char *a, const char *b) |
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{ |
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while (*a && *b) { |
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if (sys_is_path_delim(*a) && sys_is_path_delim(*b)) { |
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} else if (tolower(*a) != tolower(*b)) { |
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break; |
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} else if (*a != *b) { |
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break; |
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} |
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a++; |
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b++; |
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} |
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return tolower(*a) - tolower(*b); |
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} |
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|
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SYS_FILE *sys_fopen(const char *filename, int openmode) |
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{ |
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HANDLE *f = (HANDLE *)malloc(sizeof (HANDLE)); |
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if (openmode & SYS_OPEN_CREATE) { |
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*f = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS, NULL); |
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} else { |
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if (openmode & SYS_OPEN_WRITE) { |
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*f = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS, NULL); |
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} else { |
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*f = CreateFile(filename, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS, NULL); |
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} |
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} |
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if (*f == INVALID_HANDLE_VALUE) { |
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free(f); |
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return NULL; |
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} |
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return (SYS_FILE *)f; |
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} |
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|
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void sys_fclose(SYS_FILE *file) |
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{ |
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CloseHandle(*(HANDLE *)file); |
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free(file); |
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} |
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|
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int sys_fread(SYS_FILE *file, byte *buf, int size) |
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{ |
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DWORD read; |
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ReadFile(*(HANDLE *)file, buf, size, &read, NULL); |
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return read; |
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} |
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|
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int sys_fwrite(SYS_FILE *file, byte *buf, int size) |
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{ |
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DWORD written; |
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WriteFile(*(HANDLE *)file, buf, size, &written, NULL); |
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return written; |
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} |
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|
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int sys_fseek(SYS_FILE *file, FileOfs newofs, int seekmode) |
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{ |
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DWORD m; |
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switch (seekmode) { |
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case SYS_SEEK_SET: m = FILE_BEGIN; break; |
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case SYS_SEEK_REL: m = FILE_CURRENT; break; |
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case SYS_SEEK_END: m = FILE_END; break; |
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default: return EINVAL; |
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} |
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LONG newofs_h = newofs >> 32; |
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if (SetFilePointer(*(HANDLE *)file, newofs, &newofs_h, m) == 0xffffffff) { |
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return EINVAL; |
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} else { |
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return 0; |
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} |
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} |
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|
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void sys_flush(SYS_FILE *file) |
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{ |
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FlushFileBuffers(*(HANDLE *)file); |
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} |
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|
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FileOfs sys_ftell(SYS_FILE *file) |
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{ |
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LONG a, b=0; |
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a = SetFilePointer(*(HANDLE *)file, 0, &b, FILE_CURRENT); |
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return (((FileOfs)b)<<32)+((uint32)a); |
| 418 |
} |
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|
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void *sys_alloc_read_write_execute(int size) |
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{ |
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return VirtualAlloc(NULL, size, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE); |
| 423 |
} |
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|
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void sys_free_read_write_execute(void *p) |
| 426 |
{ |
| 427 |
VirtualFree(p, 0, MEM_DECOMMIT | MEM_RELEASE); |
| 428 |
} |
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