// This may look like C code, but it is really -*- C++ -*- // ------------------------------------------------------------------ // The Goldware Library // Copyright (C) 1990-1999 Odinn Sorensen // Copyright (C) 1999-2000 Alexander S. Aganichev // ------------------------------------------------------------------ // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library 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 // Library General Public License for more details. // // You should have received a copy of the GNU Library General Public // License along with this program; if not, write to the Free // Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, // MA 02111-1307, USA // ------------------------------------------------------------------ // $Id$ // ------------------------------------------------------------------ // Ports of OS-specific file/path functions. // ------------------------------------------------------------------ #include <gfilutil.h> #if defined(__OS2__) #define INCL_BASE #define INCL_ERROR_H #include <os2.h> #endif #if defined(__WIN32__) #include <windows.h> #endif #if defined(__CYGWIN__) #include <io.h> #endif #if defined(__MINGW32__) #include <sys/locking.h> #endif #if defined(__BEOS__) #include "be_lock.h" #endif // ------------------------------------------------------------------ #ifdef __cplusplus extern "C" { #endif // ------------------------------------------------------------------ #if (defined(__BORLANDC__) && defined(__OS2__)) || defined(__UNIX__) || defined(__EMX__) long filelength(int handle) { struct stat s; if(fstat(handle, &s) == 0) return s.st_size; else return -1; } #endif // ------------------------------------------------------------------ #if defined(__OS2__) int lock(int handle, long ofs, long length) { int rc; APIRET apiret; FILELOCK urange, lrange; lrange.lOffset = ofs; lrange.lRange = length; urange.lRange = urange.lOffset = 0; if((apiret = DosSetFileLocks((HFILE)handle, &urange, &lrange, 0, 0)) != 0) { if(apiret == ERROR_LOCK_VIOLATION) { errno = EACCES; rc = -1; } else rc = (int)apiret; } else rc = 0; return rc; } #endif // ------------------------------------------------------------------ #if defined(__OS2__) int unlock(int handle, long ofs, long length) { int rc; FILELOCK urange, lrange; APIRET apiret; urange.lOffset = ofs; urange.lRange = length; lrange.lRange = lrange.lOffset = 0; if((apiret = DosSetFileLocks((HFILE)handle, &urange, &lrange, 0, 0)) != 0) { if(apiret == ERROR_LOCK_VIOLATION) { errno = EACCES; rc = -1; } else rc = apiret; } else rc = 0; return rc; } #endif // ------------------------------------------------------------------ #if defined(__UNIX__) || defined(__CYGWIN__) int lock(int handle, long offset, long length) { #ifndef __BEOS__ struct flock fl; fl.l_type = F_WRLCK; fl.l_whence = SEEK_SET; fl.l_start = offset; fl.l_len = length; return fcntl(handle, F_SETLK, &fl); #else //__BEOS__ return be_lock(handle); #endif } #endif // ------------------------------------------------------------------ #if defined(__UNIX__) || defined(__CYGWIN__) int unlock(int handle, long offset, long length) { #ifndef __BEOS__ struct flock fl; fl.l_type = F_UNLCK; fl.l_whence = SEEK_SET; fl.l_start = offset; fl.l_len = length; return fcntl(handle, F_SETLK, &fl); #else //__BEOS__ return be_unlock(handle); #endif //__BEOS__ } #endif // ------------------------------------------------------------------ #if defined(__MINGW32__) || defined(_MSC_VER) int lock(int fh, long offs, long len) { if(LockFile((HANDLE)_get_osfhandle(fh), offs, 0L, len, 0L)) return 0; else return -1; } #endif // ------------------------------------------------------------------ #if defined(__MINGW32__) || defined(_MSC_VER) int unlock(int fh, long offs, long len) { if(UnlockFile((HANDLE)_get_osfhandle(fh), offs, 0L, len, 0L)) return 0; else return -1; } #endif // ------------------------------------------------------------------ #ifdef __cplusplus } #endif // ------------------------------------------------------------------