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/* Copyright 1999-2003,2007,2009 Alain Knaff.
* This file is part of mtools.
*
* Mtools 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.
*
* Mtools 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 Mtools. If not, see <http://www.gnu.org/licenses/>.
*
* mcat.c
* Same thing as cat /dev/fd0 or cat file >/dev/fd0
* Something, that isn't possible with floppyd anymore.
*/
#include "sysincludes.h"
#include "msdos.h"
#include "mtools.h"
#include "mainloop.h"
#include "fsP.h"
#include "xdf_io.h"
#include "floppyd_io.h"
#include "plain_io.h"
static void usage(void)
{
fprintf(stderr, "Mtools version %s, dated %s\n",
mversion, mdate);
fprintf(stderr, "Usage: mcat [-V] [-w] device\n");
fprintf(stderr, " -w write on device else read\n");
exit(1);
}
#ifdef __CYGWIN__
#define BUF_SIZE 512
#else
#define BUF_SIZE 16000
#endif
static size_t bufLen(size_t blocksize, mt_size_t totalSize, mt_off_t address)
{
if(totalSize == 0)
return blocksize;
if(address + blocksize > totalSize)
return totalSize - address;
return blocksize;
}
void mcat(int argc, char **argv, int type UNUSEDP)
{
struct device *dev;
struct device out_dev;
char drive, name[EXPAND_BUF];
char errmsg[200];
Stream_t *Stream;
char buf[BUF_SIZE];
mt_off_t address = 0;
char mode = O_RDONLY;
int optindex = 1;
size_t len;
noPrivileges = 1;
if (argc < 2) {
usage();
}
if (argv[1][0] == '-') {
if (argv[1][1] != 'w') {
usage();
}
mode = O_WRONLY;
optindex++;
}
if (argc - optindex < 1)
usage();
if (!argv[optindex][0] || argv[optindex][1] != ':'
|| argv[optindex][2]) {
usage();
}
drive = toupper(argv[optindex][0]);
/* check out a drive whose letter and parameters match */
sprintf(errmsg, "Drive '%c:' not supported", drive);
Stream = NULL;
for (dev=devices; dev->name; dev++) {
FREE(&Stream);
if (dev->drive != drive)
continue;
out_dev = *dev;
expand(dev->name,name);
#ifdef USING_NEW_VOLD
strcpy(name, getVoldName(dev, name));
#endif
Stream = 0;
#ifdef USE_XDF
Stream = XdfOpen(&out_dev, name, mode, errmsg, 0);
if(Stream)
out_dev.use_2m = 0x7f;
#endif
#ifdef USE_FLOPPYD
if(!Stream)
Stream = FloppydOpen(&out_dev, name,
mode, errmsg, NULL);
#endif
if (!Stream)
Stream = SimpleFileOpen(&out_dev, dev, name, mode,
errmsg, 0, 1, 0);
if( !Stream)
continue;
break;
}
/* print error msg if needed */
if ( dev->drive == 0 ){
FREE(&Stream);
fprintf(stderr,"%s\n",errmsg);
exit(1);
}
if (mode == O_WRONLY) {
mt_size_t size=0;
size = out_dev.sectors * out_dev.heads * out_dev.tracks;
size *= 512;
while ((len = fread(buf, 1,
bufLen(BUF_SIZE, size, address),
stdin)) > 0) {
int r = WRITES(Stream, buf, address, len);
fprintf(stderr, "Wrote to %d\n", (int) address);
if(r < 0)
break;
address += len;
}
} else {
while ((len = READS(Stream, buf, address, BUF_SIZE)) > 0) {
fwrite(buf, 1, len, stdout);
address += len;
}
}
FREE(&Stream);
exit(0);
}
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