8add068573
It's a win for static build too: function old new delta opcode_name - 213 +213 opcode_value - 68 +68 mt_main 281 256 -25 opcodes 280 - -280 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 0/1 up/down: 281/-305) Total: -24 bytes text data bss dec hex filename 767403 974 9420 777797 bde45 busybox_old 767224 974 9420 777618 bdd92 busybox_unstripped
143 lines
2.5 KiB
C
143 lines
2.5 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#include <sys/mtio.h>
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/* missing: eod/seod, stoptions, stwrthreshold, densities */
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static const short opcode_value[] = {
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MTBSF,
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MTBSFM,
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MTBSR,
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MTBSS,
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MTCOMPRESSION,
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MTEOM,
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MTERASE,
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MTFSF,
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MTFSFM,
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MTFSR,
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MTFSS,
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MTLOAD,
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MTLOCK,
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MTMKPART,
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MTNOP,
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MTOFFL,
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MTOFFL,
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MTRAS1,
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MTRAS2,
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MTRAS3,
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MTRESET,
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MTRETEN,
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MTREW,
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MTSEEK,
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MTSETBLK,
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MTSETDENSITY,
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MTSETDRVBUFFER,
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MTSETPART,
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MTTELL,
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MTWSM,
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MTUNLOAD,
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MTUNLOCK,
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MTWEOF,
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MTWEOF
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};
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static const char opcode_name[] ALIGN1 =
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"bsf" "\0"
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"bsfm" "\0"
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"bsr" "\0"
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"bss" "\0"
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"datacompression" "\0"
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"eom" "\0"
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"erase" "\0"
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"fsf" "\0"
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"fsfm" "\0"
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"fsr" "\0"
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"fss" "\0"
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"load" "\0"
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"lock" "\0"
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"mkpart" "\0"
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"nop" "\0"
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"offline" "\0"
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"rewoffline" "\0"
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"ras1" "\0"
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"ras2" "\0"
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"ras3" "\0"
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"reset" "\0"
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"retension" "\0"
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"rewind" "\0"
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"seek" "\0"
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"setblk" "\0"
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"setdensity" "\0"
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"drvbuffer" "\0"
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"setpart" "\0"
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"tell" "\0"
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"wset" "\0"
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"unload" "\0"
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"unlock" "\0"
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"eof" "\0"
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"weof" "\0";
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int mt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int mt_main(int argc, char **argv)
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{
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const char *file = "/dev/tape";
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struct mtop op;
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struct mtpos position;
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int fd, mode, idx;
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if (argc < 2) {
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bb_show_usage();
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}
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if (strcmp(argv[1], "-f") == 0) {
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if (argc < 4) {
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bb_show_usage();
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}
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file = argv[2];
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argv += 2;
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argc -= 2;
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}
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idx = index_in_strings(opcode_name, argv[1]);
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if (idx < 0)
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bb_error_msg_and_die("unrecognized opcode %s", argv[1]);
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op.mt_op = opcode_value[idx];
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if (argc >= 3)
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op.mt_count = xatoi_u(argv[2]);
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else
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op.mt_count = 1; /* One, not zero, right? */
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switch (opcode_value[idx]) {
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case MTWEOF:
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case MTERASE:
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case MTWSM:
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case MTSETDRVBUFFER:
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mode = O_WRONLY;
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break;
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default:
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mode = O_RDONLY;
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break;
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}
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fd = xopen(file, mode);
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switch (opcode_value[idx]) {
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case MTTELL:
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ioctl_or_perror_and_die(fd, MTIOCPOS, &position, "%s", file);
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printf("At block %d\n", (int) position.mt_blkno);
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break;
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default:
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ioctl_or_perror_and_die(fd, MTIOCTOP, &op, "%s", file);
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break;
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}
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return EXIT_SUCCESS;
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}
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