pcsx2/plugins/CDVDlinuz/Src/Linux/actualfile.c

445 lines
6.7 KiB
C

/* actualfile.c
* Copyright (C) 2002-2005 PCSX2 Team
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*
* PCSX2 members can be contacted through their website at www.pcsx2.net.
*/
#include <errno.h> // errno
#include <fcntl.h> // open()
#include <stdio.h> // rename()
#include <string.h> // strerror()
#include <sys/stat.h> // stat64(), open(), fstat()
#include <sys/types.h> // stat64(), open(), fstat(), lseek64()
#include <unistd.h> // stat64(), fstat(), lseek64(), read(), close(), write()
// unlink()
#include "logfile.h"
#include "actualfile.h"
int IsActualFile(const char *filename) {
int retval;
struct stat64 filestat;
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: IsActualFile(%s)", filename);
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
errno = 0;
retval = stat64(filename, &filestat);
if((retval < 0) || (errno != 0)) {
#ifdef VERBOSE_WARNING_ACTUALFILE
PrintLog("CDVDiso file: Error retrieving stats on %s", filename);
PrintLog("CDVDiso file: %i:%s\n", errno, strerror(errno));
#endif /* VERBOSE_WARNING_ACTUALFILE */
return(-1); // Name doesn't exist.
} // ENDIF- Trouble getting stat on a file?
if(S_ISREG(filestat.st_mode) == 0) return(-2); // Not a regular file.
return(0); // Yep, that's a file.
} // END IsActualFile()
void ActualFileDelete(const char *filename) {
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: ActualFileDelete(%s)", filename);
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
unlink(filename);
} // END ActualFileDelete()
void ActualFileRename(const char *origname, const char *newname) {
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: ActualFileRename(%s->%s)", origname, newname);
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
rename(origname, newname);
return;
} // END ActualFileRename()
ACTUALHANDLE ActualFileOpenForRead(const char *filename) {
int newhandle;
if(filename == NULL) return(-1);
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: ActualFileOpenForRead(%s)", filename);
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
errno = 0;
newhandle = open(filename, O_RDONLY | O_LARGEFILE);
if((newhandle < 0) || (errno != 0)) {
#ifdef VERBOSE_WARNING_ACTUALFILE
PrintLog("CDVDiso file: Error opening file %s\n", filename);
PrintLog("CDVDiso file: (%i) %i:%s\n", newhandle, errno, strerror(errno));
#endif /* VERBOSE_WARNING_ACTUALFILE */
return(-1);
} // ENDIF- Error? Abort
return(newhandle);
} // END ActualFileOpenForRead()
off64_t ActualFileSize(ACTUALHANDLE handle) {
int retval;
struct stat64 filestat;
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: ActualFileSize()\n");
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
errno = 0;
retval = fstat64(handle, &filestat);
if((retval < 0) || (errno != 0)) return(-1); // Name doesn't exist.
return(filestat.st_size);
} // END ActualFileSize()
int ActualFileSeek(ACTUALHANDLE handle, off64_t position) {
off64_t moved;
if(handle < 0) return(-1);
if(position < 0) return(-1); // Maybe... position = 0?
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: ActualFileSeek(%lli)", position);
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
errno = 0;
moved = lseek64(handle, position, SEEK_SET);
if(errno != 0) {
#ifdef VERBOSE_WARNING_ACTUALFILE
PrintLog("CDVDiso file: Error on seek (%lli)", position);
PrintLog("CDVDiso file: %i:%s\n", errno, strerror(errno));
#endif /* VERBOSE_WARNING_ACTUALFILE */
return(-1);
} // ENDIF- Error? Abort
return(0);
} // END ActualFileSeek()
int ActualFileRead(ACTUALHANDLE handle, int bytes, char *buffer) {
int retval;
if(handle == ACTUALHANDLENULL) return(-1);
if(bytes < 1) return(-1);
if(buffer == NULL) return(-1);
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: ActualFileRead(%i)", bytes);
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
errno = 0;
retval = read(handle, buffer, bytes);
if((retval < 0) || (errno != 0)) {
#ifdef VERBOSE_WARNING_ACTUALFILE
PrintLog("CDVDiso file: Error reading from file!");
PrintLog("CDVDiso file: %i:%s", errno, strerror(errno));
#endif /* VERBOSE_WARNING_ACTUALFILE */
// return(-1);
} // ENDIF- Error? Abort
return(retval); // Send back how many bytes read
} // END ActualFileRead()
void ActualFileClose(ACTUALHANDLE handle) {
if(handle < 0) return;
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: ActualFileClose()");
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
errno = 0;
close(handle);
return;
} // END ActualFileClose()
ACTUALHANDLE ActualFileOpenForWrite(const char *filename) {
int newhandle;
if(filename == NULL) return(-1);
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: ActualFileOpenForWrite(%s)", filename);
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
errno = 0;
newhandle = open(filename, O_WRONLY | O_CREAT | O_LARGEFILE, 0644);
if((newhandle < 0) || (errno != 0)) {
#ifdef VERBOSE_WARNING_ACTUALFILE
PrintLog("CDVDiso file: Error opening file %s", filename);
PrintLog("CDVDiso file: (%i) %i:%s", newhandle, errno, strerror(errno));
#endif /* VERBOSE_WARNING_ACTUALFILE */
return(-1);
} // ENDIF- Error? Abort
return(newhandle);
} // END ActualFileOpenForWrite()
int ActualFileWrite(ACTUALHANDLE handle, int bytes, char *buffer) {
int retval;
if(handle < 0) return(-1);
if(bytes < 1) return(-1);
if(buffer == NULL) return(-1);
#ifdef VERBOSE_FUNCTION_ACTUALFILE
PrintLog("CDVDiso file: ActualFileWrite(%i)", bytes);
#endif /* VERBOSE_FUNCTION_ACTUALFILE */
errno = 0;
retval = write(handle, buffer, bytes);
if((retval < 0) || (errno != 0)) {
#ifdef VERBOSE_WARNING_ACTUALFILE
PrintLog("CDVDiso file: Error writing to file!");
PrintLog("CDVDiso file: %i:%s", errno, strerror(errno));
#endif /* VERBOSE_WARNING_ACTUALFILE */
// return(-1);
} // ENDIF- Error? Abort
return(retval); // Send back how many bytes written
} // END ActualFileWrite()