hush/miscutils/mt.c
Eric Andersen cbe31dace5 It turns out that DODMALLOC was broken when I reorganized busybox.h
header file usage before the 0.49 release.  To fix it, I had to move
the '#include "busybox.h"' to the end of the list of #include files.
 -Erik
2001-02-20 06:14:08 +00:00

97 lines
1.8 KiB
C

/* vi: set sw=4 ts=4: */
#include <stdio.h>
#include <stdlib.h>
#include <sys/mtio.h>
#include <sys/fcntl.h>
#include "busybox.h"
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) {
show_usage();
}
if (strcmp(argv[1], "-f") == 0) {
if (argc < 4) {
show_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) {
error_msg("unrecognized opcode %s.", argv[1]);
return EXIT_FAILURE;
}
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_msg_and_die("%s", file);
if (ioctl(fd, MTIOCTOP, &op) != 0)
perror_msg_and_die("%s", file);
return EXIT_SUCCESS;
}