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/* vi: set sw=4 ts=4: */
#include "internal.h"
#include <stdio.h>
#include <sys/mtio.h>
#include <sys/fcntl.h>
static const char mt_usage[] = "mt [-f device] opcode value\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\nControl magnetic tape drive operation\n"
#endif
;
struct mt_opcodes {
char *name;
short value;
};
/* missing: eod/seod, stoptions, stwrthreshold, densities */
static const struct mt_opcodes opcodes[] = {
{"bsf", MTBSF},
{"bsfm", MTBSFM},
{"bsr", MTBSR},
{"bss", MTBSS},
{"datacompression", MTCOMPRESSION},
{"eom", MTEOM},
{"erase", MTERASE},
{"fsf", MTFSF},
{"fsfm", MTFSFM},
{"fsr", MTFSR},
{"fss", MTFSS},
{"load", MTLOAD},
{"lock", MTLOCK},
{"mkpart", MTMKPART},
{"nop", MTNOP},
{"offline", MTOFFL},
{"rewoffline", MTOFFL},
{"ras1", MTRAS1},
{"ras2", MTRAS2},
{"ras3", MTRAS3},
{"reset", MTRESET},
{"retension", MTRETEN},
{"rew", MTREW},
{"seek", MTSEEK},
{"setblk", MTSETBLK},
{"setdensity", MTSETDENSITY},
{"drvbuffer", MTSETDRVBUFFER},
{"setpart", MTSETPART},
{"tell", MTTELL},
{"wset", MTWSM},
{"unload", MTUNLOAD},
{"unlock", MTUNLOCK},
{"eof", MTWEOF},
{"weof", MTWEOF},
{0, 0}
};
extern int mt_main(int argc, char **argv)
{
const char *file = "/dev/tape";
const struct mt_opcodes *code = opcodes;
struct mtop op;
int fd;
if ((argc != 2 && argc != 3) || **(argv + 1) == '-') {
usage(mt_usage);
}
if (strcmp(argv[1], "-f") == 0) {
if (argc < 4) {
usage(mt_usage);
}
file = argv[2];
argv += 2;
argc -= 2;
}
while (code->name != 0) {
if (strcmp(code->name, argv[1]) == 0)
break;
code++;
}
if (code->name == 0) {
fprintf(stderr, "mt: unrecognized opcode %s.\n", argv[1]);
exit (FALSE);
}
op.mt_op = code->value;
if (argc >= 3)
op.mt_count = atoi(argv[2]);
else
op.mt_count = 1; /* One, not zero, right? */
if ((fd = open(file, O_RDONLY, 0)) < 0) {
perror(file);
exit (FALSE);
}
if (ioctl(fd, MTIOCTOP, &op) != 0) {
perror(file);
exit (FALSE);
}
exit (TRUE);
}
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