mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
7ab9c7ee52
which lets you compile out most of the "--help" output, saving up to 17k. Renamed mnc to nc. -Erik
106 lines
1.9 KiB
C
106 lines
1.9 KiB
C
/* 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);
|
|
}
|