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