[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/miscutils/mt.c b/ap/app/busybox/src/miscutils/mt.c
new file mode 100644
index 0000000..20afd3a
--- /dev/null
+++ b/ap/app/busybox/src/miscutils/mt.c
@@ -0,0 +1,152 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+//usage:#define mt_trivial_usage
+//usage: "[-f device] opcode value"
+//usage:#define mt_full_usage "\n\n"
+//usage: "Control magnetic tape drive operation\n"
+//usage: "\n"
+//usage: "Available Opcodes:\n"
+//usage: "\n"
+//usage: "bsf bsfm bsr bss datacompression drvbuffer eof eom erase\n"
+//usage: "fsf fsfm fsr fss load lock mkpart nop offline ras1 ras2\n"
+//usage: "ras3 reset retension rewind rewoffline seek setblk setdensity\n"
+//usage: "setpart tell unload unlock weof wset"
+
+#include "libbb.h"
+#include <sys/mtio.h>
+
+/* missing: eod/seod, stoptions, stwrthreshold, densities */
+static const short opcode_value[] = {
+ MTBSF,
+ MTBSFM,
+ MTBSR,
+ MTBSS,
+ MTCOMPRESSION,
+ MTEOM,
+ MTERASE,
+ MTFSF,
+ MTFSFM,
+ MTFSR,
+ MTFSS,
+ MTLOAD,
+ MTLOCK,
+ MTMKPART,
+ MTNOP,
+ MTOFFL,
+ MTOFFL,
+ MTRAS1,
+ MTRAS2,
+ MTRAS3,
+ MTRESET,
+ MTRETEN,
+ MTREW,
+ MTSEEK,
+ MTSETBLK,
+ MTSETDENSITY,
+ MTSETDRVBUFFER,
+ MTSETPART,
+ MTTELL,
+ MTWSM,
+ MTUNLOAD,
+ MTUNLOCK,
+ MTWEOF,
+ MTWEOF
+};
+
+static const char opcode_name[] ALIGN1 =
+ "bsf" "\0"
+ "bsfm" "\0"
+ "bsr" "\0"
+ "bss" "\0"
+ "datacompression" "\0"
+ "eom" "\0"
+ "erase" "\0"
+ "fsf" "\0"
+ "fsfm" "\0"
+ "fsr" "\0"
+ "fss" "\0"
+ "load" "\0"
+ "lock" "\0"
+ "mkpart" "\0"
+ "nop" "\0"
+ "offline" "\0"
+ "rewoffline" "\0"
+ "ras1" "\0"
+ "ras2" "\0"
+ "ras3" "\0"
+ "reset" "\0"
+ "retension" "\0"
+ "rewind" "\0"
+ "seek" "\0"
+ "setblk" "\0"
+ "setdensity" "\0"
+ "drvbuffer" "\0"
+ "setpart" "\0"
+ "tell" "\0"
+ "wset" "\0"
+ "unload" "\0"
+ "unlock" "\0"
+ "eof" "\0"
+ "weof" "\0";
+
+int mt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int mt_main(int argc UNUSED_PARAM, char **argv)
+{
+ const char *file = "/dev/tape";
+ struct mtop op;
+ struct mtpos position;
+ int fd, mode, idx;
+
+ if (!argv[1]) {
+ bb_show_usage();
+ }
+
+ if (strcmp(argv[1], "-f") == 0) {
+ if (!argv[2] || !argv[3])
+ bb_show_usage();
+ file = argv[2];
+ argv += 2;
+ }
+
+ idx = index_in_strings(opcode_name, argv[1]);
+
+ if (idx < 0)
+ bb_error_msg_and_die("unrecognized opcode %s", argv[1]);
+
+ op.mt_op = opcode_value[idx];
+ if (argv[2])
+ op.mt_count = xatoi_positive(argv[2]);
+ else
+ op.mt_count = 1; /* One, not zero, right? */
+
+ switch (opcode_value[idx]) {
+ case MTWEOF:
+ case MTERASE:
+ case MTWSM:
+ case MTSETDRVBUFFER:
+ mode = O_WRONLY;
+ break;
+
+ default:
+ mode = O_RDONLY;
+ break;
+ }
+
+ fd = xopen(file, mode);
+
+ switch (opcode_value[idx]) {
+ case MTTELL:
+ ioctl_or_perror_and_die(fd, MTIOCPOS, &position, "%s", file);
+ printf("At block %d\n", (int) position.mt_blkno);
+ break;
+
+ default:
+ ioctl_or_perror_and_die(fd, MTIOCTOP, &op, "%s", file);
+ break;
+ }
+
+ return EXIT_SUCCESS;
+}