minix/commands/i386/mtools-3.9.7/mcat.c
2005-04-21 14:53:53 +00:00

129 lines
2.7 KiB
C
Executable file

/*
* 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"
void usage(void)
{
fprintf(stderr, "Mtools version %s, dated %s\n",
mversion, mdate);
fprintf(stderr, "Usage: mcat [-w] device\n");
fprintf(stderr, " -w write on device else read\n");
exit(1);
}
#define BUF_SIZE 16000
void mcat(int argc, char **argv, int type)
{
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 (skip_drive(argv[optindex]) == argv[optindex])
usage();
drive = get_drive(argv[optindex], NULL);
/* check out a drive whose letter and parameters match */
sprintf(errmsg, "Drive '%s:' not supported", drive);
Stream = NULL;
for (dev=devices; dev->name; dev++) {
FREE(&Stream);
if (strcmp(dev->drive, drive) != 0)
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, dev, name,
mode, errmsg, 0, 1);
#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) {
while ((len = fread(buf, 1, BUF_SIZE, stdin))
== BUF_SIZE) {
WRITES(Stream, buf, address, BUF_SIZE);
address += BUF_SIZE;
}
if (len)
WRITES(Stream, buf, address, len);
} else {
while ((len = READS(Stream, buf, address, BUF_SIZE))
== BUF_SIZE) {
fwrite(buf, 1, BUF_SIZE, stdout);
address += BUF_SIZE;
}
if (len)
fwrite(buf, 1, len, stdout);
}
FREE(&Stream);
exit(0);
}