| #define _XOPEN_SOURCE 500 |
| #ifndef _GNU_SOURCE |
| #define _GNU_SOURCE /* resolves u_char typedef in scsi/scsi.h [lk 2.4] */ |
| #endif |
| |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <ctype.h> |
| #include <errno.h> |
| #include <limits.h> |
| #include <sys/ioctl.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/sysmacros.h> |
| #include <sys/time.h> |
| #include <linux/major.h> |
| #include <linux/fs.h> /* <sys/mount.h> */ |
| #include "sg_lib.h" |
| #include "sg_cmds_basic.h" |
| #include "sg_cmds_extra.h" |
| #include "sg_io_linux.h" |
| |
| /* A utility program for copying files. Specialised for "files" that |
| * represent devices that understand the SCSI command set. |
| * |
| * Copyright (C) 1999 - 2007 D. Gilbert and P. Allworth |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2, or (at your option) |
| * any later version. |
| |
| This program is a specialisation of the Unix "dd" command in which |
| either the input or the output file is a scsi generic device, raw |
| device, a block device or a normal file. The block size ('bs') is |
| assumed to be 512 if not given. This program complains if 'ibs' or |
| 'obs' are given with a value that differs from 'bs' (or the default 512). |
| If 'if' is not given or 'if=-' then stdin is assumed. If 'of' is |
| not given or 'of=-' then stdout assumed. |
| |
| A non-standard argument "bpt" (blocks per transfer) is added to control |
| the maximum number of blocks in each transfer. The default value is 128. |
| For example if "bs=512" and "bpt=32" then a maximum of 32 blocks (16 KiB |
| in this case) is transferred to or from the sg device in a single SCSI |
| command. The actual size of the SCSI READ or WRITE command block can be |
| selected with the "cdbsz" argument. |
| |
| This version is designed for the linux kernel 2.4 and 2.6 series. |
| */ |
| |
| static char * version_str = "5.60 20070124"; |
| |
| #define ME "sg_dd: " |
| |
| /* #define SG_DEBUG */ |
| |
| #define STR_SZ 1024 |
| #define INOUTF_SZ 512 |
| #define EBUFF_SZ 512 |
| |
| #define DEF_BLOCK_SIZE 512 |
| #define DEF_BLOCKS_PER_TRANSFER 128 |
| #define DEF_BLOCKS_PER_2048TRANSFER 32 |
| #define DEF_SCSI_CDBSZ 10 |
| #define MAX_SCSI_CDBSZ 16 |
| |
| #define DEF_MODE_CDB_SZ 10 |
| #define DEF_MODE_RESP_LEN 252 |
| #define RW_ERR_RECOVERY_MP 1 |
| #define CACHING_MP 8 |
| #define CONTROL_MP 0xa |
| |
| #define SENSE_BUFF_LEN 32 /* Arbitrary, could be larger */ |
| #define READ_CAP_REPLY_LEN 8 |
| #define RCAP16_REPLY_LEN 32 |
| #define READ_LONG_OPCODE 0x3E |
| #define READ_LONG_CMD_LEN 10 |
| |
| #define DEF_TIMEOUT 60000 /* 60,000 millisecs == 60 seconds */ |
| |
| #ifndef RAW_MAJOR |
| #define RAW_MAJOR 255 /*unlikey value */ |
| #endif |
| |
| #define FT_OTHER 1 /* filetype is probably normal */ |
| #define FT_SG 2 /* filetype is sg char device or supports |
| SG_IO ioctl */ |
| #define FT_RAW 4 /* filetype is raw char device */ |
| #define FT_DEV_NULL 8 /* either "/dev/null" or "." as filename */ |
| #define FT_ST 16 /* filetype is st char device (tape) */ |
| #define FT_BLOCK 32 /* filetype is block device */ |
| #define FT_ERROR 64 /* couldn't "stat" file */ |
| |
| #define DEV_NULL_MINOR_NUM 3 |
| |
| /* If platform does not support O_DIRECT then define it harmlessly */ |
| #ifndef O_DIRECT |
| #define O_DIRECT 0 |
| #endif |
| |
| #define MIN_RESERVED_SIZE 8192 |
| |
| #define MAX_UNIT_ATTENTIONS 10 |
| #define MAX_ABORTED_CMDS 256 |
| |
| static int sum_of_resids = 0; |
| |
| static long long dd_count = -1; |
| static long long req_count = 0; |
| static long long in_full = 0; |
| static int in_partial = 0; |
| static long long out_full = 0; |
| static int out_partial = 0; |
| static int recovered_errs = 0; |
| static int unrecovered_errs = 0; |
| static int read_longs = 0; |
| static int num_retries = 0; |
| |
| static int do_time = 0; |
| static int verbose = 0; |
| static int start_tm_valid = 0; |
| static struct timeval start_tm; |
| static int blk_sz = 0; |
| static int max_uas = MAX_UNIT_ATTENTIONS; |
| static int max_aborted = MAX_ABORTED_CMDS; |
| static int coe_limit = 0; |
| static int coe_count = 0; |
| |
| static const char * proc_allow_dio = "/proc/scsi/sg/allow_dio"; |
| |
| struct flags_t { |
| int append; |
| int coe; |
| int direct; |
| int dpo; |
| int dsync; |
| int excl; |
| int fua; |
| int sgio; |
| int pdt; |
| int cdbsz; |
| int retries; |
| }; |
| |
| static struct flags_t iflag; |
| static struct flags_t oflag; |
| |
| static void calc_duration_throughput(int contin); |
| |
| static void install_handler(int sig_num, void (*sig_handler) (int sig)) |
| { |
| struct sigaction sigact; |
| sigaction (sig_num, NULL, &sigact); |
| if (sigact.sa_handler != SIG_IGN) |
| { |
| sigact.sa_handler = sig_handler; |
| sigemptyset (&sigact.sa_mask); |
| sigact.sa_flags = 0; |
| sigaction (sig_num, &sigact, NULL); |
| } |
| } |
| |
| static void print_stats(const char * str) |
| { |
| if (0 != dd_count) |
| fprintf(stderr, " remaining block count=%lld\n", dd_count); |
| fprintf(stderr, "%s%lld+%d records in\n", str, in_full - in_partial, |
| in_partial); |
| fprintf(stderr, "%s%lld+%d records out\n", str, out_full - out_partial, |
| out_partial); |
| if (recovered_errs > 0) |
| fprintf(stderr, "%s%d recovered errors\n", str, recovered_errs); |
| if (num_retries > 0) |
| fprintf(stderr, "%s%d retries attempted\n", str, num_retries); |
| if (iflag.coe || oflag.coe) { |
| fprintf(stderr, "%s%d unrecovered errors\n", str, unrecovered_errs); |
| fprintf(stderr, "%s%d read_longs fetched part of unrecovered " |
| "read errors\n", str, read_longs); |
| } else if (unrecovered_errs) |
| fprintf(stderr, "%s%d unrecovered error(s)\n", str, |
| unrecovered_errs); |
| } |
| |
| static void interrupt_handler(int sig) |
| { |
| struct sigaction sigact; |
| |
| sigact.sa_handler = SIG_DFL; |
| sigemptyset(&sigact.sa_mask); |
| sigact.sa_flags = 0; |
| sigaction(sig, &sigact, NULL); |
| fprintf(stderr, "Interrupted by signal,"); |
| if (do_time) |
| calc_duration_throughput(0); |
| print_stats(""); |
| kill(getpid (), sig); |
| } |
| |
| static void siginfo_handler(int sig) |
| { |
| sig = sig; /* dummy to stop -W warning messages */ |
| fprintf(stderr, "Progress report, continuing ...\n"); |
| if (do_time) |
| calc_duration_throughput(1); |
| print_stats(" "); |
| } |
| |
| static int dd_filetype(const char * filename) |
| { |
| struct stat st; |
| size_t len = strlen(filename); |
| |
| if ((1 == len) && ('.' == filename[0])) |
| return FT_DEV_NULL; |
| if (stat(filename, &st) < 0) |
| return FT_ERROR; |
| if (S_ISCHR(st.st_mode)) { |
| if ((MEM_MAJOR == major(st.st_rdev)) && |
| (DEV_NULL_MINOR_NUM == minor(st.st_rdev))) |
| return FT_DEV_NULL; |
| if (RAW_MAJOR == major(st.st_rdev)) |
| return FT_RAW; |
| if (SCSI_GENERIC_MAJOR == major(st.st_rdev)) |
| return FT_SG; |
| if (SCSI_TAPE_MAJOR == major(st.st_rdev)) |
| return FT_ST; |
| } else if (S_ISBLK(st.st_mode)) |
| return FT_BLOCK; |
| return FT_OTHER; |
| } |
| |
| static char * dd_filetype_str(int ft, char * buff) |
| { |
| int off = 0; |
| |
| if (FT_DEV_NULL & ft) |
| off += snprintf(buff + off, 32, "null device "); |
| if (FT_SG & ft) |
| off += snprintf(buff + off, 32, "SCSI generic (sg) device "); |
| if (FT_BLOCK & ft) |
| off += snprintf(buff + off, 32, "block device "); |
| if (FT_ST & ft) |
| off += snprintf(buff + off, 32, "SCSI tape device "); |
| if (FT_RAW & ft) |
| off += snprintf(buff + off, 32, "raw device "); |
| if (FT_OTHER & ft) |
| off += snprintf(buff + off, 32, "other (perhaps ordinary file) "); |
| if (FT_ERROR & ft) |
| off += snprintf(buff + off, 32, "unable to 'stat' file "); |
| return buff; |
| } |
| |
| static void usage() |
| { |
| fprintf(stderr, "Usage: " |
| "sg_dd [bs=BS] [count=COUNT] [ibs=BS] [if=IFILE]" |
| " [iflag=FLAGS]\n" |
| " [obs=BS] [of=OFILE] [oflag=FLAGS] " |
| "[seek=SEEK] [skip=SKIP]\n" |
| " [--help] [--version]\n\n" |
| " [blk_sgio=0|1] [bpt=BPT] [cdbsz=6|10|12|16] " |
| "[coe=0|1|2|3]\n" |
| " [coe_limit=CL] [dio=0|1] [odir=0|1] " |
| "[retries=RETR] [sync=0|1]\n" |
| " [time=0|1] [verbose=VERB]\n" |
| " where:\n" |
| " blk_sgio 0->block device use normal I/O(def), 1->use " |
| "SG_IO\n" |
| " bpt is blocks_per_transfer (default is 128 or 32 " |
| "when BS>=2048)\n" |
| " bs block size (default is 512)\n"); |
| fprintf(stderr, |
| " cdbsz size of SCSI READ or WRITE cdb (default is " |
| "10)\n" |
| " coe 0->exit on error (def), 1->continue on sg " |
| "error (zero\n" |
| " fill), 2->also try read_long on unrecovered " |
| "reads,\n" |
| " 3->and set the CORRCT bit on the read long\n" |
| " coe_limit limit consecutive 'bad' blocks on reads to CL " |
| "times\n" |
| " when COE>1 (default: 0 which is no limit)\n" |
| " count number of blocks to copy (def: device size)\n" |
| " dio for direct IO, 1->attempt, 0->indirect IO (def)\n" |
| " ibs input block size (if given must be same as " |
| "'bs=')\n" |
| " if file or device to read from (def: stdin)\n" |
| " iflag comma separated list from: [coe,direct,dpo," |
| "dsync,excl,fua,\n" |
| " sgio]\n" |
| " obs output block size (if given must be same as " |
| "'bs=')\n" |
| " odir 1->use O_DIRECT when opening block dev, " |
| "0->don't(def)\n" |
| " of file or device to write to (def: stdout), " |
| "OFILE of '.'\n"); |
| fprintf(stderr, |
| " treated as /dev/null\n" |
| " oflag comma separated list from: [append,coe,direct" |
| ",dpo,dsync,excl,\n" |
| " fua,sgio]\n" |
| " retries retry sgio errors RETR times (def: 0)\n" |
| " seek block position to start writing to OFILE\n" |
| " skip block position to start reading from IFILE\n" |
| " sync 0->no sync(def), 1->SYNCHRONIZE CACHE on " |
| "OFILE after copy\n" |
| " time 0->no timing(def), 1->time plus calculate " |
| "throughput\n" |
| " verbose 0->quiet(def), 1->some noise, 2->more noise, " |
| "etc\n" |
| " --help print out this usage message then exit\n" |
| " --version print version information then exit\n\n" |
| "copy from IFILE to OFILE, similar to dd command; " |
| "specialized for SCSI devices\n"); |
| } |
| |
| /* Return of 0 -> success, see sg_ll_read_capacity*() otherwise */ |
| static int scsi_read_capacity(int sg_fd, long long * num_sect, int * sect_sz) |
| { |
| int k, res; |
| unsigned int ui; |
| unsigned char rcBuff[RCAP16_REPLY_LEN]; |
| int verb; |
| |
| verb = (verbose ? verbose - 1: 0); |
| res = sg_ll_readcap_10(sg_fd, 0, 0, rcBuff, READ_CAP_REPLY_LEN, 0, verb); |
| if (0 != res) |
| return res; |
| |
| if ((0xff == rcBuff[0]) && (0xff == rcBuff[1]) && (0xff == rcBuff[2]) && |
| (0xff == rcBuff[3])) { |
| long long ls; |
| |
| res = sg_ll_readcap_16(sg_fd, 0, 0, rcBuff, RCAP16_REPLY_LEN, 0, |
| verb); |
| if (0 != res) |
| return res; |
| for (k = 0, ls = 0; k < 8; ++k) { |
| ls <<= 8; |
| ls |= rcBuff[k]; |
| } |
| *num_sect = ls + 1; |
| *sect_sz = (rcBuff[8] << 24) | (rcBuff[9] << 16) | |
| (rcBuff[10] << 8) | rcBuff[11]; |
| } else { |
| ui = ((rcBuff[0] << 24) | (rcBuff[1] << 16) | (rcBuff[2] << 8) | |
| rcBuff[3]); |
| /* take care not to sign extend values > 0x7fffffff */ |
| *num_sect = (long long)ui + 1; |
| *sect_sz = (rcBuff[4] << 24) | (rcBuff[5] << 16) | |
| (rcBuff[6] << 8) | rcBuff[7]; |
| } |
| if (verbose) |
| fprintf(stderr, " number of blocks=%lld [0x%llx], block " |
| "size=%d\n", *num_sect, *num_sect, *sect_sz); |
| return 0; |
| } |
| |
| /* Return of 0 -> success, -1 -> failure. BLKGETSIZE64, BLKGETSIZE and */ |
| /* BLKSSZGET macros problematic (from <linux/fs.h> or <sys/mount.h>). */ |
| static int read_blkdev_capacity(int sg_fd, long long * num_sect, |
| int * sect_sz) |
| { |
| #ifdef BLKSSZGET |
| if ((ioctl(sg_fd, BLKSSZGET, sect_sz) < 0) && (*sect_sz > 0)) { |
| perror("BLKSSZGET ioctl error"); |
| return -1; |
| } else { |
| #ifdef BLKGETSIZE64 |
| unsigned long long ull; |
| |
| if (ioctl(sg_fd, BLKGETSIZE64, &ull) < 0) { |
| |
| perror("BLKGETSIZE64 ioctl error"); |
| return -1; |
| } |
| *num_sect = ((long long)ull / (long long)*sect_sz); |
| if (verbose) |
| fprintf(stderr, " [bgs64] number of blocks=%lld [0x%llx], " |
| "block size=%d\n", *num_sect, *num_sect, *sect_sz); |
| #else |
| unsigned long ul; |
| |
| if (ioctl(sg_fd, BLKGETSIZE, &ul) < 0) { |
| perror("BLKGETSIZE ioctl error"); |
| return -1; |
| } |
| *num_sect = (long long)ul; |
| if (verbose) |
| fprintf(stderr, " [bgs] number of blocks=%lld [0x%llx], " |
| " block size=%d\n", *num_sect, *num_sect, *sect_sz); |
| #endif |
| } |
| return 0; |
| #else |
| if (verbose) |
| fprintf(stderr, " BLKSSZGET+BLKGETSIZE ioctl not available\n"); |
| *num_sect = 0; |
| *sect_sz = 0; |
| return -1; |
| #endif |
| } |
| |
| static int sg_build_scsi_cdb(unsigned char * cdbp, int cdb_sz, |
| unsigned int blocks, long long start_block, |
| int write_true, int fua, int dpo) |
| { |
| int rd_opcode[] = {0x8, 0x28, 0xa8, 0x88}; |
| int wr_opcode[] = {0xa, 0x2a, 0xaa, 0x8a}; |
| int sz_ind; |
| |
| memset(cdbp, 0, cdb_sz); |
| if (dpo) |
| cdbp[1] |= 0x10; |
| if (fua) |
| cdbp[1] |= 0x8; |
| switch (cdb_sz) { |
| case 6: |
| sz_ind = 0; |
| cdbp[0] = (unsigned char)(write_true ? wr_opcode[sz_ind] : |
| rd_opcode[sz_ind]); |
| cdbp[1] = (unsigned char)((start_block >> 16) & 0x1f); |
| cdbp[2] = (unsigned char)((start_block >> 8) & 0xff); |
| cdbp[3] = (unsigned char)(start_block & 0xff); |
| cdbp[4] = (256 == blocks) ? 0 : (unsigned char)blocks; |
| if (blocks > 256) { |
| fprintf(stderr, ME "for 6 byte commands, maximum number of " |
| "blocks is 256\n"); |
| return 1; |
| } |
| if ((start_block + blocks - 1) & (~0x1fffff)) { |
| fprintf(stderr, ME "for 6 byte commands, can't address blocks" |
| " beyond %d\n", 0x1fffff); |
| return 1; |
| } |
| if (dpo || fua) { |
| fprintf(stderr, ME "for 6 byte commands, neither dpo nor fua" |
| " bits supported\n"); |
| return 1; |
| } |
| break; |
| case 10: |
| sz_ind = 1; |
| cdbp[0] = (unsigned char)(write_true ? wr_opcode[sz_ind] : |
| rd_opcode[sz_ind]); |
| cdbp[2] = (unsigned char)((start_block >> 24) & 0xff); |
| cdbp[3] = (unsigned char)((start_block >> 16) & 0xff); |
| cdbp[4] = (unsigned char)((start_block >> 8) & 0xff); |
| cdbp[5] = (unsigned char)(start_block & 0xff); |
| cdbp[7] = (unsigned char)((blocks >> 8) & 0xff); |
| cdbp[8] = (unsigned char)(blocks & 0xff); |
| if (blocks & (~0xffff)) { |
| fprintf(stderr, ME "for 10 byte commands, maximum number of " |
| "blocks is %d\n", 0xffff); |
| return 1; |
| } |
| break; |
| case 12: |
| sz_ind = 2; |
| cdbp[0] = (unsigned char)(write_true ? wr_opcode[sz_ind] : |
| rd_opcode[sz_ind]); |
| cdbp[2] = (unsigned char)((start_block >> 24) & 0xff); |
| cdbp[3] = (unsigned char)((start_block >> 16) & 0xff); |
| cdbp[4] = (unsigned char)((start_block >> 8) & 0xff); |
| cdbp[5] = (unsigned char)(start_block & 0xff); |
| cdbp[6] = (unsigned char)((blocks >> 24) & 0xff); |
| cdbp[7] = (unsigned char)((blocks >> 16) & 0xff); |
| cdbp[8] = (unsigned char)((blocks >> 8) & 0xff); |
| cdbp[9] = (unsigned char)(blocks & 0xff); |
| break; |
| case 16: |
| sz_ind = 3; |
| cdbp[0] = (unsigned char)(write_true ? wr_opcode[sz_ind] : |
| rd_opcode[sz_ind]); |
| cdbp[2] = (unsigned char)((start_block >> 56) & 0xff); |
| cdbp[3] = (unsigned char)((start_block >> 48) & 0xff); |
| cdbp[4] = (unsigned char)((start_block >> 40) & 0xff); |
| cdbp[5] = (unsigned char)((start_block >> 32) & 0xff); |
| cdbp[6] = (unsigned char)((start_block >> 24) & 0xff); |
| cdbp[7] = (unsigned char)((start_block >> 16) & 0xff); |
| cdbp[8] = (unsigned char)((start_block >> 8) & 0xff); |
| cdbp[9] = (unsigned char)(start_block & 0xff); |
| cdbp[10] = (unsigned char)((blocks >> 24) & 0xff); |
| cdbp[11] = (unsigned char)((blocks >> 16) & 0xff); |
| cdbp[12] = (unsigned char)((blocks >> 8) & 0xff); |
| cdbp[13] = (unsigned char)(blocks & 0xff); |
| break; |
| default: |
| fprintf(stderr, ME "expected cdb size of 6, 10, 12, or 16 but got" |
| " %d\n", cdb_sz); |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* 0 -> successful, SG_LIB_SYNTAX_ERROR -> unable to build cdb, |
| SG_LIB_CAT_UNIT_ATTENTION -> try again, |
| SG_LIB_CAT_MEDIUM_HARD_WITH_INFO -> 'io_addrp' written to, |
| SG_LIB_CAT_MEDIUM_HARD -> no info field, |
| SG_LIB_CAT_NOT_READY, SG_LIB_CAT_ABORTED_COMMAND, |
| -2 -> ENOMEM |
| -1 other errors */ |
| static int sg_read_low(int sg_fd, unsigned char * buff, int blocks, |
| long long from_block, int bs, |
| const struct flags_t * ifp, int * diop, |
| unsigned long long * io_addrp) |
| { |
| unsigned char rdCmd[MAX_SCSI_CDBSZ]; |
| unsigned char senseBuff[SENSE_BUFF_LEN]; |
| struct sg_io_hdr io_hdr; |
| int res, k, info_valid; |
| |
| if (sg_build_scsi_cdb(rdCmd, ifp->cdbsz, blocks, from_block, 0, |
| ifp->fua, ifp->dpo)) { |
| fprintf(stderr, ME "bad rd cdb build, from_block=%lld, blocks=%d\n", |
| from_block, blocks); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| |
| memset(&io_hdr, 0, sizeof(struct sg_io_hdr)); |
| io_hdr.interface_id = 'S'; |
| io_hdr.cmd_len = ifp->cdbsz; |
| io_hdr.cmdp = rdCmd; |
| io_hdr.dxfer_direction = SG_DXFER_FROM_DEV; |
| io_hdr.dxfer_len = bs * blocks; |
| io_hdr.dxferp = buff; |
| io_hdr.mx_sb_len = SENSE_BUFF_LEN; |
| io_hdr.sbp = senseBuff; |
| io_hdr.timeout = DEF_TIMEOUT; |
| io_hdr.pack_id = (int)from_block; |
| if (diop && *diop) |
| io_hdr.flags |= SG_FLAG_DIRECT_IO; |
| |
| if (verbose > 2) { |
| fprintf(stderr, " read cdb: "); |
| for (k = 0; k < ifp->cdbsz; ++k) |
| fprintf(stderr, "%02x ", rdCmd[k]); |
| fprintf(stderr, "\n"); |
| } |
| while (((res = ioctl(sg_fd, SG_IO, &io_hdr)) < 0) && (EINTR == errno)) |
| ; |
| if (res < 0) { |
| if (ENOMEM == errno) |
| return -2; |
| perror("reading (SG_IO) on sg device, error"); |
| return -1; |
| } |
| if (verbose > 2) |
| fprintf(stderr, " duration=%u ms\n", io_hdr.duration); |
| res = sg_err_category3(&io_hdr); |
| switch (res) { |
| case SG_LIB_CAT_CLEAN: |
| break; |
| case SG_LIB_CAT_RECOVERED: |
| ++recovered_errs; |
| info_valid = sg_get_sense_info_fld(io_hdr.sbp, io_hdr.sb_len_wr, |
| io_addrp); |
| if (info_valid) { |
| fprintf(stderr, " lba of last recovered error in this " |
| "READ=0x%llx\n", *io_addrp); |
| if (verbose > 1) |
| sg_chk_n_print3("reading", &io_hdr, 1); |
| } else { |
| fprintf(stderr, "Recovered error: [no info] reading from " |
| "block=0x%llx, num=%d\n", from_block, blocks); |
| sg_chk_n_print3("reading", &io_hdr, verbose > 1); |
| } |
| break; |
| case SG_LIB_CAT_ABORTED_COMMAND: |
| case SG_LIB_CAT_UNIT_ATTENTION: |
| sg_chk_n_print3("reading", &io_hdr, verbose > 1); |
| return res; |
| case SG_LIB_CAT_MEDIUM_HARD: |
| if (verbose > 1) |
| sg_chk_n_print3("reading", &io_hdr, verbose > 1); |
| ++unrecovered_errs; |
| info_valid = sg_get_sense_info_fld(io_hdr.sbp, io_hdr.sb_len_wr, |
| io_addrp); |
| /* MMC devices don't necessarily set VALID bit */ |
| if ((info_valid) || ((5 == ifp->pdt) && (*io_addrp > 0))) |
| return SG_LIB_CAT_MEDIUM_HARD_WITH_INFO; |
| else { |
| fprintf(stderr, "Medium, hardware or blank check error but " |
| "no lba of failure given\n"); |
| return res; |
| } |
| break; |
| case SG_LIB_CAT_NOT_READY: |
| ++unrecovered_errs; |
| if (verbose > 0) |
| sg_chk_n_print3("reading", &io_hdr, verbose > 1); |
| return res; |
| default: |
| ++unrecovered_errs; |
| sg_chk_n_print3("reading", &io_hdr, verbose > 1); |
| return res; |
| } |
| if (diop && *diop && |
| ((io_hdr.info & SG_INFO_DIRECT_IO_MASK) != SG_INFO_DIRECT_IO)) |
| *diop = 0; /* flag that dio not done (completely) */ |
| sum_of_resids += io_hdr.resid; |
| return 0; |
| } |
| |
| /* 0 -> successful, SG_LIB_SYNTAX_ERROR -> unable to build cdb, |
| SG_LIB_CAT_UNIT_ATTENTION -> try again, SG_LIB_CAT_NOT_READY, |
| SG_LIB_CAT_MEDIUM_HARD, SG_LIB_CAT_ABORTED_COMMAND, |
| -2 -> ENOMEM, -1 other errors */ |
| static int sg_read(int sg_fd, unsigned char * buff, int blocks, |
| long long from_block, int bs, struct flags_t * ifp, |
| int * diop, int * blks_readp) |
| { |
| unsigned long long io_addr; |
| long long lba; |
| int res, blks, repeat, xferred; |
| unsigned char * bp; |
| int retries_tmp; |
| int ret = 0; |
| |
| retries_tmp = ifp->retries; |
| for (xferred = 0, blks = blocks, lba = from_block, bp = buff; |
| blks > 0; blks = blocks - xferred) { |
| io_addr = 0; |
| repeat = 0; |
| res = sg_read_low(sg_fd, bp, blks, lba, bs, ifp, diop, &io_addr); |
| switch (res) { |
| case 0: |
| if (blks_readp) |
| *blks_readp = xferred + blks; |
| if (coe_limit > 0) |
| coe_count = 0; /* good read clears coe_count */ |
| return 0; |
| case -2: /* ENOMEM */ |
| return res; |
| case SG_LIB_CAT_NOT_READY: |
| fprintf(stderr, "Device (r) not ready\n"); |
| return res; |
| case SG_LIB_CAT_ABORTED_COMMAND: |
| if (--max_aborted > 0) { |
| fprintf(stderr, "Aborted command, continuing (r)\n"); |
| repeat = 1; |
| } else { |
| fprintf(stderr, "Aborted command, too many (r)\n"); |
| return res; |
| } |
| break; |
| case SG_LIB_CAT_UNIT_ATTENTION: |
| if (--max_uas > 0) { |
| fprintf(stderr, "Unit attention, continuing (r)\n"); |
| repeat = 1; |
| } else { |
| fprintf(stderr, "Unit attention, too many (r)\n"); |
| return res; |
| } |
| break; |
| case SG_LIB_CAT_MEDIUM_HARD_WITH_INFO: |
| if (retries_tmp > 0) { |
| fprintf(stderr, ">>> retrying a sgio read, lba=0x%llx\n", |
| (unsigned long long)lba); |
| --retries_tmp; |
| ++num_retries; |
| if (unrecovered_errs > 0) |
| --unrecovered_errs; |
| repeat = 1; |
| } |
| ret = SG_LIB_CAT_MEDIUM_HARD; |
| break; /* unrecovered read error at lba=io_addr */ |
| case SG_LIB_SYNTAX_ERROR: |
| ifp->coe = 0; |
| ret = res; |
| goto err_out; |
| case -1: |
| ret = res; |
| goto err_out; |
| case SG_LIB_CAT_MEDIUM_HARD: |
| default: |
| if (retries_tmp > 0) { |
| fprintf(stderr, ">>> retrying a sgio read, lba=0x%llx\n", |
| (unsigned long long)lba); |
| --retries_tmp; |
| ++num_retries; |
| if (unrecovered_errs > 0) |
| --unrecovered_errs; |
| repeat = 1; |
| break; |
| } |
| ret = res; |
| goto err_out; |
| } |
| if (repeat) |
| continue; |
| if ((io_addr < (unsigned long long)lba) || |
| (io_addr >= (unsigned long long)(lba + blks))) { |
| fprintf(stderr, " Unrecovered error lba 0x%llx not in " |
| "correct range:\n\t[0x%llx,0x%llx]\n", io_addr, |
| (unsigned long long)lba, |
| (unsigned long long)(lba + blks - 1)); |
| goto err_out; |
| } |
| blks = (int)(io_addr - (unsigned long long)lba); |
| if (blks > 0) { |
| if (verbose) |
| fprintf(stderr, " partial read of %d blocks prior to " |
| "medium error\n", blks); |
| res = sg_read_low(sg_fd, bp, blks, lba, bs, ifp, diop, &io_addr); |
| switch (res) { |
| case 0: |
| break; |
| case -1: |
| ifp->coe = 0; |
| ret = res; |
| goto err_out; |
| case -2: |
| fprintf(stderr, "ENOMEM again, unexpected (r)\n"); |
| return -1; |
| case SG_LIB_CAT_NOT_READY: |
| fprintf(stderr, "device (r) not ready\n"); |
| return res; |
| case SG_LIB_CAT_UNIT_ATTENTION: |
| fprintf(stderr, "Unit attention, unexpected (r)\n"); |
| return res; |
| case SG_LIB_CAT_ABORTED_COMMAND: |
| fprintf(stderr, "Aborted command, unexpected (r)\n"); |
| return res; |
| case SG_LIB_CAT_MEDIUM_HARD_WITH_INFO: |
| case SG_LIB_CAT_MEDIUM_HARD: |
| ret = SG_LIB_CAT_MEDIUM_HARD; |
| goto err_out; |
| case SG_LIB_SYNTAX_ERROR: |
| default: |
| fprintf(stderr, ">> unexpected result=%d from " |
| "sg_read_low() 2\n", res); |
| ret = res; |
| goto err_out; |
| } |
| } |
| xferred += blks; |
| if (0 == ifp->coe) { |
| /* give up at block before problem unless 'coe' */ |
| if (blks_readp) |
| *blks_readp = xferred; |
| return ret; |
| } |
| if (bs < 32) { |
| fprintf(stderr, ">> bs=%d too small for read_long\n", bs); |
| return -1; /* nah, block size can't be that small */ |
| } |
| bp += (blks * bs); |
| lba += blks; |
| if ((0 != ifp->pdt) || (ifp->coe < 2)) { |
| fprintf(stderr, ">> unrecovered read error at blk=%lld, " |
| "pdt=%d, use zeros\n", lba, ifp->pdt); |
| memset(bp, 0, bs); |
| } else if (io_addr < UINT_MAX) { |
| unsigned char * buffp; |
| int offset, nl, r, ok, corrct; |
| |
| buffp = (unsigned char*)malloc(bs * 2); |
| if (NULL == buffp) { |
| fprintf(stderr, ">> heap problems\n"); |
| return -1; |
| } |
| corrct = (ifp->coe > 2) ? 1 : 0; |
| res = sg_ll_read_long10(sg_fd, /* pblock */0, corrct, lba, buffp, |
| bs + 8, &offset, 1, verbose); |
| ok = 0; |
| switch (res) { |
| case 0: |
| ok = 1; |
| ++read_longs; |
| break; |
| case SG_LIB_CAT_ILLEGAL_REQ_WITH_INFO: |
| nl = bs + 8 - offset; |
| if ((nl < 32) || (nl > (bs * 2))) { |
| fprintf(stderr, ">> read_long(10) len=%d unexpected\n", |
| nl); |
| break; |
| } |
| if (verbose) |
| fprintf(stderr, "read_long(10): adjusted len=%d\n", nl); |
| r = sg_ll_read_long10(sg_fd, 0, corrct, lba, buffp, nl, |
| &offset, 1, verbose); |
| if (0 == r) { |
| ok = 1; |
| ++read_longs; |
| break; |
| } else |
| fprintf(stderr, ">> unexpected result=%d on second " |
| "read_long(10)\n", r); |
| break; |
| case SG_LIB_CAT_INVALID_OP: |
| fprintf(stderr, ">> read_long(10); not supported\n"); |
| break; |
| case SG_LIB_CAT_ILLEGAL_REQ: |
| fprintf(stderr, ">> read_long(10): bad cdb field\n"); |
| break; |
| case SG_LIB_CAT_NOT_READY: |
| fprintf(stderr, ">> read_long(10): device not ready\n"); |
| break; |
| case SG_LIB_CAT_UNIT_ATTENTION: |
| fprintf(stderr, ">> read_long(10): unit attention\n"); |
| break; |
| case SG_LIB_CAT_ABORTED_COMMAND: |
| fprintf(stderr, ">> read_long(10): aborted command\n"); |
| break; |
| default: |
| fprintf(stderr, ">> read_long(10): problem (%d)\n", res); |
| break; |
| } |
| if (ok) |
| memcpy(bp, buffp, bs); |
| else |
| memset(bp, 0, bs); |
| free(buffp); |
| } else { |
| fprintf(stderr, ">> read_long(10) cannot handle blk=%lld, " |
| "use zeros\n", lba); |
| memset(bp, 0, bs); |
| } |
| ++xferred; |
| bp += bs; |
| ++lba; |
| if ((coe_limit > 0) && (++coe_count > coe_limit)) { |
| if (blks_readp) |
| *blks_readp = xferred + blks; |
| fprintf(stderr, ">> coe_limit on consecutive reads exceeded\n"); |
| return SG_LIB_CAT_MEDIUM_HARD; |
| } |
| } |
| if (blks_readp) |
| *blks_readp = xferred; |
| return 0; |
| |
| err_out: |
| if (ifp->coe) { |
| memset(bp, 0, bs * blks); |
| fprintf(stderr, ">> unable to read at blk=%lld for " |
| "%d bytes, use zeros\n", lba, bs * blks); |
| /* fudge success */ |
| if (blks_readp) |
| *blks_readp = xferred + blks; |
| return ret; |
| } else |
| return ret ? ret : -1; |
| } |
| |
| /* 0 -> successful, SG_LIB_SYNTAX_ERROR -> unable to build cdb, |
| SG_LIB_CAT_NOT_READY, SG_LIB_CAT_UNIT_ATTENTION, SG_LIB_CAT_MEDIUM_HARD, |
| SG_LIB_CAT_ABORTED_COMMAND, -2 -> recoverable (ENOMEM), |
| -1 -> unrecoverable error + others */ |
| static int sg_write(int sg_fd, unsigned char * buff, int blocks, |
| long long to_block, int bs, const struct flags_t * ofp, |
| int * diop) |
| { |
| unsigned char wrCmd[MAX_SCSI_CDBSZ]; |
| unsigned char senseBuff[SENSE_BUFF_LEN]; |
| struct sg_io_hdr io_hdr; |
| int res, k, info_valid; |
| unsigned long long io_addr = 0; |
| |
| if (sg_build_scsi_cdb(wrCmd, ofp->cdbsz, blocks, to_block, 1, ofp->fua, |
| ofp->dpo)) { |
| fprintf(stderr, ME "bad wr cdb build, to_block=%lld, blocks=%d\n", |
| to_block, blocks); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| |
| memset(&io_hdr, 0, sizeof(struct sg_io_hdr)); |
| io_hdr.interface_id = 'S'; |
| io_hdr.cmd_len = ofp->cdbsz; |
| io_hdr.cmdp = wrCmd; |
| io_hdr.dxfer_direction = SG_DXFER_TO_DEV; |
| io_hdr.dxfer_len = bs * blocks; |
| io_hdr.dxferp = buff; |
| io_hdr.mx_sb_len = SENSE_BUFF_LEN; |
| io_hdr.sbp = senseBuff; |
| io_hdr.timeout = DEF_TIMEOUT; |
| io_hdr.pack_id = (int)to_block; |
| if (diop && *diop) |
| io_hdr.flags |= SG_FLAG_DIRECT_IO; |
| |
| if (verbose > 2) { |
| fprintf(stderr, " write cdb: "); |
| for (k = 0; k < ofp->cdbsz; ++k) |
| fprintf(stderr, "%02x ", wrCmd[k]); |
| fprintf(stderr, "\n"); |
| } |
| while (((res = ioctl(sg_fd, SG_IO, &io_hdr)) < 0) && (EINTR == errno)) |
| ; |
| if (res < 0) { |
| if (ENOMEM == errno) |
| return -2; |
| perror("writing (SG_IO) on sg device, error"); |
| return -1; |
| } |
| |
| if (verbose > 2) |
| fprintf(stderr, " duration=%u ms\n", io_hdr.duration); |
| res = sg_err_category3(&io_hdr); |
| switch (res) { |
| case SG_LIB_CAT_CLEAN: |
| break; |
| case SG_LIB_CAT_RECOVERED: |
| ++recovered_errs; |
| info_valid = sg_get_sense_info_fld(io_hdr.sbp, io_hdr.sb_len_wr, |
| &io_addr); |
| if (info_valid) { |
| fprintf(stderr, " lba of last recovered error in this " |
| "WRITE=0x%llx\n", io_addr); |
| if (verbose > 1) |
| sg_chk_n_print3("writing", &io_hdr, 1); |
| } else { |
| fprintf(stderr, "Recovered error: [no info] writing to " |
| "block=0x%llx, num=%d\n", to_block, blocks); |
| sg_chk_n_print3("writing", &io_hdr, verbose > 1); |
| } |
| break; |
| case SG_LIB_CAT_ABORTED_COMMAND: |
| case SG_LIB_CAT_UNIT_ATTENTION: |
| sg_chk_n_print3("writing", &io_hdr, verbose > 1); |
| return res; |
| case SG_LIB_CAT_NOT_READY: |
| ++unrecovered_errs; |
| fprintf(stderr, "device not ready (w)\n"); |
| return res; |
| case SG_LIB_CAT_MEDIUM_HARD: |
| default: |
| sg_chk_n_print3("writing", &io_hdr, verbose > 1); |
| ++unrecovered_errs; |
| if (ofp->coe) { |
| fprintf(stderr, ">> ignored errors for out blk=%lld for " |
| "%d bytes\n", to_block, bs * blocks); |
| return 0; /* fudge success */ |
| } else |
| return res; |
| } |
| if (diop && *diop && |
| ((io_hdr.info & SG_INFO_DIRECT_IO_MASK) != SG_INFO_DIRECT_IO)) |
| *diop = 0; /* flag that dio not done (completely) */ |
| return 0; |
| } |
| |
| static void calc_duration_throughput(int contin) |
| { |
| struct timeval end_tm, res_tm; |
| double a, b; |
| long long blks; |
| |
| if (start_tm_valid && (start_tm.tv_sec || start_tm.tv_usec)) { |
| blks = (in_full > out_full) ? in_full : out_full; |
| gettimeofday(&end_tm, NULL); |
| res_tm.tv_sec = end_tm.tv_sec - start_tm.tv_sec; |
| res_tm.tv_usec = end_tm.tv_usec - start_tm.tv_usec; |
| if (res_tm.tv_usec < 0) { |
| --res_tm.tv_sec; |
| res_tm.tv_usec += 1000000; |
| } |
| a = res_tm.tv_sec; |
| a += (0.000001 * res_tm.tv_usec); |
| b = (double)blk_sz * blks; |
| fprintf(stderr, "time to transfer data%s: %d.%06d secs", |
| (contin ? " so far" : ""), (int)res_tm.tv_sec, |
| (int)res_tm.tv_usec); |
| if ((a > 0.00001) && (b > 511)) |
| fprintf(stderr, " at %.2f MB/sec\n", b / (a * 1000000.0)); |
| else |
| fprintf(stderr, "\n"); |
| } |
| } |
| |
| static int process_flags(const char * arg, struct flags_t * fp) |
| { |
| char buff[256]; |
| char * cp; |
| char * np; |
| |
| strncpy(buff, arg, sizeof(buff)); |
| buff[sizeof(buff) - 1] = '\0'; |
| if ('\0' == buff[0]) { |
| fprintf(stderr, "no flag found\n"); |
| return 1; |
| } |
| cp = buff; |
| do { |
| np = strchr(cp, ','); |
| if (np) |
| *np++ = '\0'; |
| if (0 == strcmp(cp, "append")) |
| fp->append = 1; |
| else if (0 == strcmp(cp, "coe")) |
| ++fp->coe; |
| else if (0 == strcmp(cp, "direct")) |
| fp->direct = 1; |
| else if (0 == strcmp(cp, "dpo")) |
| fp->dpo = 1; |
| else if (0 == strcmp(cp, "dsync")) |
| fp->dsync = 1; |
| else if (0 == strcmp(cp, "excl")) |
| fp->excl = 1; |
| else if (0 == strcmp(cp, "fua")) |
| fp->fua = 1; |
| else if (0 == strcmp(cp, "sgio")) |
| fp->sgio = 1; |
| else { |
| fprintf(stderr, "unrecognised flag: %s\n", cp); |
| return 1; |
| } |
| cp = np; |
| } while (cp); |
| return 0; |
| } |
| |
| |
| int main(int argc, char * argv[]) |
| { |
| long long skip = 0; |
| long long seek = 0; |
| int ibs = 0; |
| int obs = 0; |
| int bpt = DEF_BLOCKS_PER_TRANSFER; |
| int bpt_given = 0; |
| char str[STR_SZ]; |
| char * key; |
| char * buf; |
| char inf[INOUTF_SZ]; |
| int in_type = FT_OTHER; |
| char outf[INOUTF_SZ]; |
| int out_type = FT_OTHER; |
| int dio = 0; |
| int dio_incomplete = 0; |
| int cdbsz_given = 0; |
| int do_sync = 0; |
| int verb = 0; |
| int res, k, t, buf_sz, dio_tmp, flags, fl, first; |
| int infd, outfd, blocks, retries_tmp, blks_read; |
| unsigned char * wrkBuff; |
| unsigned char * wrkPos; |
| long long in_num_sect = -1; |
| long long out_num_sect = -1; |
| int in_sect_sz, out_sect_sz; |
| char ebuff[EBUFF_SZ]; |
| int blocks_per; |
| struct sg_simple_inquiry_resp sir; |
| int ret = 0; |
| |
| inf[0] = '\0'; |
| outf[0] = '\0'; |
| iflag.cdbsz = DEF_SCSI_CDBSZ; |
| oflag.cdbsz = DEF_SCSI_CDBSZ; |
| if (argc < 2) { |
| fprintf(stderr, |
| "Won't default both IFILE to stdin _and_ OFILE to stdout\n"); |
| fprintf(stderr, "For more information use '--help'\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| |
| for (k = 1; k < argc; k++) { |
| if (argv[k]) { |
| strncpy(str, argv[k], STR_SZ); |
| str[STR_SZ - 1] = '\0'; |
| } else |
| continue; |
| for (key = str, buf = key; *buf && *buf != '=';) |
| buf++; |
| if (*buf) |
| *buf++ = '\0'; |
| if (0 == strncmp(key, "app", 3)) { |
| iflag.append = sg_get_num(buf); |
| oflag.append = iflag.append; |
| } else if (0 == strcmp(key, "blk_sgio")) { |
| iflag.sgio = sg_get_num(buf); |
| oflag.sgio = iflag.sgio; |
| } else if (0 == strcmp(key, "bpt")) { |
| bpt = sg_get_num(buf); |
| if (-1 == bpt) { |
| fprintf(stderr, ME "bad argument to 'bpt='\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| bpt_given = 1; |
| } else if (0 == strcmp(key, "bs")) { |
| blk_sz = sg_get_num(buf); |
| if (-1 == blk_sz) { |
| fprintf(stderr, ME "bad argument to 'bs='\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| } else if (0 == strcmp(key, "cdbsz")) { |
| iflag.cdbsz = sg_get_num(buf); |
| oflag.cdbsz = iflag.cdbsz; |
| cdbsz_given = 1; |
| } else if (0 == strcmp(key, "coe")) { |
| iflag.coe = sg_get_num(buf); |
| oflag.coe = iflag.coe; |
| } else if (0 == strcmp(key, "coe_limit")) { |
| coe_limit = sg_get_num(buf); |
| if (-1 == coe_limit) { |
| fprintf(stderr, ME "bad argument to 'coe_limit='\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| } else if (0 == strcmp(key, "count")) { |
| dd_count = sg_get_llnum(buf); |
| if (-1LL == dd_count) { |
| fprintf(stderr, ME "bad argument to 'count='\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| } else if (0 == strcmp(key, "dio")) |
| dio = sg_get_num(buf); |
| else if (0 == strcmp(key, "fua")) { |
| t = sg_get_num(buf); |
| oflag.fua = (t & 1) ? 1 : 0; |
| iflag.fua = (t & 2) ? 1 : 0; |
| } else if (0 == strcmp(key, "ibs")) |
| ibs = sg_get_num(buf); |
| else if (strcmp(key, "if") == 0) { |
| if ('\0' != inf[0]) { |
| fprintf(stderr, "Second IFILE argument??\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } else |
| strncpy(inf, buf, INOUTF_SZ); |
| } else if (0 == strcmp(key, "iflag")) { |
| if (process_flags(buf, &iflag)) { |
| fprintf(stderr, ME "bad argument to 'iflag='\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| } else if (0 == strcmp(key, "obs")) |
| obs = sg_get_num(buf); |
| else if (0 == strcmp(key, "odir")) { |
| iflag.direct = sg_get_num(buf); |
| oflag.direct = iflag.direct; |
| } else if (strcmp(key, "of") == 0) { |
| if ('\0' != outf[0]) { |
| fprintf(stderr, "Second OFILE argument??\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } else |
| strncpy(outf, buf, INOUTF_SZ); |
| } else if (0 == strcmp(key, "oflag")) { |
| if (process_flags(buf, &oflag)) { |
| fprintf(stderr, ME "bad argument to 'oflag='\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| } else if (0 == strcmp(key, "retries")) { |
| iflag.retries = sg_get_num(buf); |
| oflag.retries = iflag.retries; |
| if (-1 == iflag.retries) { |
| fprintf(stderr, ME "bad argument to 'retries='\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| } else if (0 == strcmp(key, "seek")) { |
| seek = sg_get_llnum(buf); |
| if (-1LL == seek) { |
| fprintf(stderr, ME "bad argument to 'seek='\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| } else if (0 == strcmp(key, "skip")) { |
| skip = sg_get_llnum(buf); |
| if (-1LL == skip) { |
| fprintf(stderr, ME "bad argument to 'skip='\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| } else if (0 == strcmp(key, "sync")) |
| do_sync = sg_get_num(buf); |
| else if (0 == strcmp(key, "time")) |
| do_time = sg_get_num(buf); |
| else if (0 == strncmp(key, "verb", 4)) { |
| verbose = sg_get_num(buf); |
| verb = (verbose ? verbose - 1: 0); |
| } else if ((0 == strncmp(key, "--help", 7)) || |
| (0 == strcmp(key, "-?"))) { |
| usage(); |
| return 0; |
| } else if (0 == strncmp(key, "--vers", 6)) { |
| fprintf(stderr, ME "%s\n", version_str); |
| return 0; |
| } else { |
| fprintf(stderr, "Unrecognized option '%s'\n", key); |
| fprintf(stderr, "For more information use '--help'\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| } |
| if (blk_sz <= 0) { |
| blk_sz = DEF_BLOCK_SIZE; |
| fprintf(stderr, "Assume default 'bs' (block size) of %d bytes\n", |
| blk_sz); |
| } |
| if ((ibs && (ibs != blk_sz)) || (obs && (obs != blk_sz))) { |
| fprintf(stderr, "If 'ibs' or 'obs' given must be same as 'bs'\n"); |
| fprintf(stderr, "For more information use '--help'\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| if ((skip < 0) || (seek < 0)) { |
| fprintf(stderr, "skip and seek cannot be negative\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| if ((oflag.append > 0) && (seek > 0)) { |
| fprintf(stderr, "Can't use both append and seek switches\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| if (bpt < 1) { |
| fprintf(stderr, "bpt must be greater than 0\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| /* defaulting transfer size to 128*2048 for CD/DVDs is too large |
| for the block layer in lk 2.6 and results in an EIO on the |
| SG_IO ioctl. So reduce it in that case. */ |
| if ((blk_sz >= 2048) && (0 == bpt_given)) |
| bpt = DEF_BLOCKS_PER_2048TRANSFER; |
| #ifdef SG_DEBUG |
| fprintf(stderr, ME "if=%s skip=%lld of=%s seek=%lld count=%lld\n", |
| inf, skip, outf, seek, dd_count); |
| #endif |
| install_handler(SIGINT, interrupt_handler); |
| install_handler(SIGQUIT, interrupt_handler); |
| install_handler(SIGPIPE, interrupt_handler); |
| install_handler(SIGUSR1, siginfo_handler); |
| |
| infd = STDIN_FILENO; |
| outfd = STDOUT_FILENO; |
| iflag.pdt = -1; |
| oflag.pdt = -1; |
| if (inf[0] && ('-' != inf[0])) { |
| in_type = dd_filetype(inf); |
| if (verbose) |
| fprintf(stderr, " >> Input file type: %s\n", |
| dd_filetype_str(in_type, ebuff)); |
| if (FT_ERROR & in_type) { |
| fprintf(stderr, ME "unable access %s\n", inf); |
| return SG_LIB_FILE_ERROR; |
| } else if ((FT_BLOCK & in_type) && iflag.sgio) |
| in_type |= FT_SG; |
| |
| if (FT_ST & in_type) { |
| fprintf(stderr, ME "unable to use scsi tape device %s\n", inf); |
| return SG_LIB_FILE_ERROR; |
| } else if (FT_SG & in_type) { |
| flags = O_NONBLOCK; |
| if (iflag.direct) |
| flags |= O_DIRECT; |
| if (iflag.excl) |
| flags |= O_EXCL; |
| if (iflag.dsync) |
| flags |= O_SYNC; |
| fl = O_RDONLY; |
| if ((infd = open(inf, fl | flags)) < 0) { |
| fl = O_RDWR; |
| if ((infd = open(inf, fl | flags)) < 0) { |
| snprintf(ebuff, EBUFF_SZ, |
| ME "could not open %s for sg reading", inf); |
| perror(ebuff); |
| return SG_LIB_FILE_ERROR; |
| } |
| } |
| if (verbose) |
| fprintf(stderr, " open input(sg_io), flags=0x%x\n", |
| fl | flags); |
| if (sg_simple_inquiry(infd, &sir, 0, verb)) { |
| fprintf(stderr, "INQUIRY failed on %s\n", inf); |
| return SG_LIB_CAT_OTHER; |
| } |
| iflag.pdt = sir.peripheral_type; |
| if (verbose) |
| fprintf(stderr, " %s: %.8s %.16s %.4s [pdt=%d]\n", |
| inf, sir.vendor, sir.product, sir.revision, iflag.pdt); |
| if (! (FT_BLOCK & in_type)) { |
| t = blk_sz * bpt; |
| res = ioctl(infd, SG_SET_RESERVED_SIZE, &t); |
| if (res < 0) |
| perror(ME "SG_SET_RESERVED_SIZE error"); |
| res = ioctl(infd, SG_GET_VERSION_NUM, &t); |
| if ((res < 0) || (t < 30000)) { |
| if (FT_BLOCK & in_type) |
| fprintf(stderr, ME "SG_IO unsupported on this block" |
| " device\n"); |
| else |
| fprintf(stderr, ME "sg driver prior to 3.x.y\n"); |
| return SG_LIB_FILE_ERROR; |
| } |
| } |
| } else { |
| flags = O_RDONLY; |
| if (iflag.direct) |
| flags |= O_DIRECT; |
| if (iflag.excl) |
| flags |= O_EXCL; |
| if (iflag.dsync) |
| flags |= O_SYNC; |
| infd = open(inf, flags); |
| if (infd < 0) { |
| snprintf(ebuff, EBUFF_SZ, |
| ME "could not open %s for reading", inf); |
| perror(ebuff); |
| return SG_LIB_FILE_ERROR; |
| } else { |
| if (verbose) |
| fprintf(stderr, " open input, flags=0x%x\n", |
| flags); |
| if (skip > 0) { |
| off64_t offset = skip; |
| |
| offset *= blk_sz; /* could exceed 32 bits here! */ |
| if (lseek64(infd, offset, SEEK_SET) < 0) { |
| snprintf(ebuff, EBUFF_SZ, ME "couldn't skip to " |
| "required position on %s", inf); |
| perror(ebuff); |
| return SG_LIB_FILE_ERROR; |
| } |
| if (verbose) |
| fprintf(stderr, " >> skip: lseek64 SEEK_SET, " |
| "byte offset=0x%llx\n", |
| (unsigned long long)offset); |
| } |
| } |
| } |
| } |
| |
| if (outf[0] && ('-' != outf[0])) { |
| out_type = dd_filetype(outf); |
| if (verbose) |
| fprintf(stderr, " >> Output file type: %s\n", |
| dd_filetype_str(out_type, ebuff)); |
| |
| if ((FT_BLOCK & out_type) && oflag.sgio) |
| out_type |= FT_SG; |
| |
| if (FT_ST & out_type) { |
| fprintf(stderr, ME "unable to use scsi tape device %s\n", outf); |
| return SG_LIB_FILE_ERROR; |
| } else if (FT_SG & out_type) { |
| flags = O_RDWR | O_NONBLOCK; |
| if (oflag.direct) |
| flags |= O_DIRECT; |
| if (oflag.excl) |
| flags |= O_EXCL; |
| if (oflag.dsync) |
| flags |= O_SYNC; |
| if ((outfd = open(outf, flags)) < 0) { |
| snprintf(ebuff, EBUFF_SZ, |
| ME "could not open %s for sg writing", outf); |
| perror(ebuff); |
| return SG_LIB_FILE_ERROR; |
| } |
| if (verbose) |
| fprintf(stderr, " open output(sg_io), flags=0x%x\n", |
| flags); |
| if (sg_simple_inquiry(outfd, &sir, 0, verb)) { |
| fprintf(stderr, "INQUIRY failed on %s\n", outf); |
| return SG_LIB_CAT_OTHER; |
| } |
| oflag.pdt = sir.peripheral_type; |
| if (verbose) |
| fprintf(stderr, " %s: %.8s %.16s %.4s [pdt=%d]\n", |
| outf, sir.vendor, sir.product, sir.revision, oflag.pdt); |
| if (! (FT_BLOCK & out_type)) { |
| t = blk_sz * bpt; |
| res = ioctl(outfd, SG_SET_RESERVED_SIZE, &t); |
| if (res < 0) |
| perror(ME "SG_SET_RESERVED_SIZE error"); |
| res = ioctl(outfd, SG_GET_VERSION_NUM, &t); |
| if ((res < 0) || (t < 30000)) { |
| fprintf(stderr, ME "sg driver prior to 3.x.y\n"); |
| return SG_LIB_FILE_ERROR; |
| } |
| } |
| } else if (FT_DEV_NULL & out_type) |
| outfd = -1; /* don't bother opening */ |
| else { |
| if (! (FT_RAW & out_type)) { |
| flags = O_WRONLY | O_CREAT; |
| if (oflag.direct) |
| flags |= O_DIRECT; |
| if (oflag.excl) |
| flags |= O_EXCL; |
| if (oflag.dsync) |
| flags |= O_SYNC; |
| if (oflag.append) |
| flags |= O_APPEND; |
| if ((outfd = open(outf, flags, 0666)) < 0) { |
| snprintf(ebuff, EBUFF_SZ, |
| ME "could not open %s for writing", outf); |
| perror(ebuff); |
| return SG_LIB_FILE_ERROR; |
| } |
| } else { |
| flags = O_WRONLY; |
| if (oflag.direct) |
| flags |= O_DIRECT; |
| if (oflag.excl) |
| flags |= O_EXCL; |
| if (oflag.dsync) |
| flags |= O_SYNC; |
| if ((outfd = open(outf, flags)) < 0) { |
| snprintf(ebuff, EBUFF_SZ, |
| ME "could not open %s for raw writing", outf); |
| perror(ebuff); |
| return SG_LIB_FILE_ERROR; |
| } |
| } |
| if (verbose) |
| fprintf(stderr, " open output, flags=0x%x\n", flags); |
| if (seek > 0) { |
| off64_t offset = seek; |
| |
| offset *= blk_sz; /* could exceed 32 bits here! */ |
| if (lseek64(outfd, offset, SEEK_SET) < 0) { |
| snprintf(ebuff, EBUFF_SZ, |
| ME "couldn't seek to required position on %s", outf); |
| perror(ebuff); |
| return SG_LIB_FILE_ERROR; |
| } |
| if (verbose) |
| fprintf(stderr, " >> seek: lseek64 SEEK_SET, " |
| "byte offset=0x%llx\n", |
| (unsigned long long)offset); |
| } |
| } |
| } |
| if ((STDIN_FILENO == infd) && (STDOUT_FILENO == outfd)) { |
| fprintf(stderr, |
| "Can't have both 'if' as stdin _and_ 'of' as stdout\n"); |
| fprintf(stderr, "For more information use '--help'\n"); |
| return SG_LIB_SYNTAX_ERROR; |
| } |
| |
| if ((dd_count < 0) || ((verbose > 0) && (0 == dd_count))) { |
| in_num_sect = -1; |
| if (FT_SG & in_type) { |
| res = scsi_read_capacity(infd, &in_num_sect, &in_sect_sz); |
| if (SG_LIB_CAT_UNIT_ATTENTION == res) { |
| fprintf(stderr, "Unit attention (readcap in), continuing\n"); |
| res = scsi_read_capacity(infd, &in_num_sect, &in_sect_sz); |
| } else if (SG_LIB_CAT_ABORTED_COMMAND == res) { |
| fprintf(stderr, "Aborted command (readcap in), continuing\n"); |
| res = scsi_read_capacity(infd, &in_num_sect, &in_sect_sz); |
| } |
| if (0 != res) { |
| if (res == SG_LIB_CAT_INVALID_OP) |
| fprintf(stderr, "read capacity not supported on %s\n", |
| inf); |
| else if (res == SG_LIB_CAT_NOT_READY) |
| fprintf(stderr, "read capacity failed on %s - not " |
| "ready\n", inf); |
| else |
| fprintf(stderr, "Unable to read capacity on %s\n", inf); |
| in_num_sect = -1; |
| } |
| if (in_sect_sz != blk_sz) |
| fprintf(stderr, ">> warning: block size on %s confusion: " |
| "bs=%d, device claims=%d\n", inf, blk_sz, in_sect_sz); |
| } else if (FT_BLOCK & in_type) { |
| if (0 != read_blkdev_capacity(infd, &in_num_sect, &in_sect_sz)) { |
| fprintf(stderr, "Unable to read block capacity on %s\n", inf); |
| in_num_sect = -1; |
| } |
| if (blk_sz != in_sect_sz) { |
| fprintf(stderr, "block size on %s confusion: bs=%d, " |
| "device claims=%d\n", inf, blk_sz, in_sect_sz); |
| in_num_sect = -1; |
| } |
| } |
| if (in_num_sect > skip) |
| in_num_sect -= skip; |
| |
| out_num_sect = -1; |
| if (FT_SG & out_type) { |
| res = scsi_read_capacity(outfd, &out_num_sect, &out_sect_sz); |
| if (SG_LIB_CAT_UNIT_ATTENTION == res) { |
| fprintf(stderr, |
| "Unit attention (readcap out), continuing\n"); |
| res = scsi_read_capacity(outfd, &out_num_sect, &out_sect_sz); |
| } else if (SG_LIB_CAT_ABORTED_COMMAND == res) { |
| fprintf(stderr, |
| "Aborted command (readcap out), continuing\n"); |
| res = scsi_read_capacity(outfd, &out_num_sect, &out_sect_sz); |
| } |
| if (0 != res) { |
| if (res == SG_LIB_CAT_INVALID_OP) |
| fprintf(stderr, "read capacity not supported on %s\n", |
| outf); |
| else |
| fprintf(stderr, "Unable to read capacity on %s\n", outf); |
| out_num_sect = -1; |
| } |
| if (blk_sz != out_sect_sz) |
| fprintf(stderr, ">> warning: block size on %s confusion: " |
| "bs=%d, device claims=%d\n", outf, blk_sz, |
| out_sect_sz); |
| } else if (FT_BLOCK & out_type) { |
| if (0 != read_blkdev_capacity(outfd, &out_num_sect, |
| &out_sect_sz)) { |
| fprintf(stderr, "Unable to read block capacity on %s\n", |
| outf); |
| out_num_sect = -1; |
| } |
| if (blk_sz != out_sect_sz) { |
| fprintf(stderr, "block size on %s confusion: bs=%d, " |
| "device claims=%d\n", outf, blk_sz, out_sect_sz); |
| out_num_sect = -1; |
| } |
| } |
| if (out_num_sect > seek) |
| out_num_sect -= seek; |
| #ifdef SG_DEBUG |
| fprintf(stderr, |
| "Start of loop, count=%lld, in_num_sect=%lld, out_num_sect=%lld\n", |
| dd_count, in_num_sect, out_num_sect); |
| #endif |
| if (dd_count < 0) { |
| if (in_num_sect > 0) { |
| if (out_num_sect > 0) |
| dd_count = (in_num_sect > out_num_sect) ? out_num_sect : |
| in_num_sect; |
| else |
| dd_count = in_num_sect; |
| } else |
| dd_count = out_num_sect; |
| } |
| } |
| |
| if (dd_count < 0) { |
| fprintf(stderr, "Couldn't calculate count, please give one\n"); |
| return SG_LIB_CAT_OTHER; |
| } |
| if (! cdbsz_given) { |
| if ((FT_SG & in_type) && (MAX_SCSI_CDBSZ != iflag.cdbsz) && |
| (((dd_count + skip) > UINT_MAX) || (bpt > USHRT_MAX))) { |
| fprintf(stderr, "Note: SCSI command size increased to 16 bytes " |
| "(for 'if')\n"); |
| iflag.cdbsz = MAX_SCSI_CDBSZ; |
| } |
| if ((FT_SG & out_type) && (MAX_SCSI_CDBSZ != oflag.cdbsz) && |
| (((dd_count + seek) > UINT_MAX) || (bpt > USHRT_MAX))) { |
| fprintf(stderr, "Note: SCSI command size increased to 16 bytes " |
| "(for 'of')\n"); |
| oflag.cdbsz = MAX_SCSI_CDBSZ; |
| } |
| } |
| |
| if (dio || iflag.direct || oflag.direct || (FT_RAW & in_type) || |
| (FT_RAW & out_type)) { |
| size_t psz = getpagesize(); |
| wrkBuff = (unsigned char*)malloc(blk_sz * bpt + psz); |
| if (0 == wrkBuff) { |
| fprintf(stderr, "Not enough user memory for raw\n"); |
| return SG_LIB_CAT_OTHER; |
| } |
| wrkPos = (unsigned char *)(((unsigned long)wrkBuff + psz - 1) & |
| (~(psz - 1))); |
| } else { |
| wrkBuff = (unsigned char*)malloc(blk_sz * bpt); |
| if (0 == wrkBuff) { |
| fprintf(stderr, "Not enough user memory\n"); |
| return SG_LIB_CAT_OTHER; |
| } |
| wrkPos = wrkBuff; |
| } |
| |
| blocks_per = bpt; |
| #ifdef SG_DEBUG |
| fprintf(stderr, "Start of loop, count=%lld, blocks_per=%d\n", |
| dd_count, blocks_per); |
| #endif |
| if (do_time) { |
| start_tm.tv_sec = 0; |
| start_tm.tv_usec = 0; |
| gettimeofday(&start_tm, NULL); |
| start_tm_valid = 1; |
| } |
| req_count = dd_count; |
| |
| /* <<< main loop that does the copy >>> */ |
| while (dd_count > 0) { |
| blocks = (dd_count > blocks_per) ? blocks_per : dd_count; |
| if (FT_SG & in_type) { |
| dio_tmp = dio; |
| res = sg_read(infd, wrkPos, blocks, skip, blk_sz, &iflag, |
| &dio_tmp, &blks_read); |
| if (-2 == res) { /* ENOMEM, find what's available+try that */ |
| if (ioctl(infd, SG_GET_RESERVED_SIZE, &buf_sz) < 0) { |
| perror("RESERVED_SIZE ioctls failed"); |
| ret = res; |
| break; |
| } |
| if (buf_sz < MIN_RESERVED_SIZE) |
| buf_sz = MIN_RESERVED_SIZE; |
| blocks_per = (buf_sz + blk_sz - 1) / blk_sz; |
| if (blocks_per < blocks) { |
| blocks = blocks_per; |
| fprintf(stderr, "Reducing read to %d blocks per " |
| "loop\n", blocks_per); |
| res = sg_read(infd, wrkPos, blocks, skip, blk_sz, |
| &iflag, &dio_tmp, &blks_read); |
| } |
| } |
| if (res) { |
| fprintf(stderr, "sg_read failed,%s at or after lba=%lld " |
| "[0x%llx]\n", |
| ((-2 == res) ? " try reducing bpt," : ""), skip, skip); |
| ret = res; |
| break; |
| } else { |
| if (blks_read < blocks) { |
| dd_count = 0; /* force exit after write */ |
| blocks = blks_read; |
| } |
| in_full += blocks; |
| if (dio && (0 == dio_tmp)) |
| dio_incomplete++; |
| } |
| } else { |
| while (((res = read(infd, wrkPos, blocks * blk_sz)) < 0) && |
| (EINTR == errno)) |
| ; |
| if (verbose > 2) |
| fprintf(stderr, "read(unix): count=%d, res=%d\n", |
| blocks * blk_sz, res); |
| if (res < 0) { |
| snprintf(ebuff, EBUFF_SZ, ME "reading, skip=%lld ", skip); |
| perror(ebuff); |
| ret = -1; |
| break; |
| } else if (res < blocks * blk_sz) { |
| dd_count = 0; |
| blocks = res / blk_sz; |
| if ((res % blk_sz) > 0) { |
| blocks++; |
| in_partial++; |
| } |
| } |
| in_full += blocks; |
| } |
| |
| if (0 == blocks) |
| break; /* nothing read so leave loop */ |
| |
| if (FT_SG & out_type) { |
| dio_tmp = dio; |
| retries_tmp = oflag.retries; |
| first = 1; |
| while (1) { |
| ret = sg_write(outfd, wrkPos, blocks, seek, blk_sz, |
| &oflag, &dio_tmp); |
| if (0 == ret) |
| break; |
| if ((SG_LIB_CAT_NOT_READY == ret) || |
| (SG_LIB_SYNTAX_ERROR == ret)) |
| break; |
| else if ((-2 == ret) && first) { |
| /* ENOMEM: find what's available and try that */ |
| if (ioctl(outfd, SG_GET_RESERVED_SIZE, &buf_sz) < 0) { |
| perror("RESERVED_SIZE ioctls failed"); |
| break; |
| } |
| if (buf_sz < MIN_RESERVED_SIZE) |
| buf_sz = MIN_RESERVED_SIZE; |
| blocks_per = (buf_sz + blk_sz - 1) / blk_sz; |
| if (blocks_per < blocks) { |
| blocks = blocks_per; |
| fprintf(stderr, "Reducing write to %d blocks per " |
| "loop\n", blocks); |
| } else |
| break; |
| } else if ((SG_LIB_CAT_UNIT_ATTENTION == ret) && first) { |
| if (--max_uas > 0) |
| fprintf(stderr, "Unit attention, continuing (w)\n"); |
| else { |
| fprintf(stderr, "Unit attention, too many (w)\n"); |
| break; |
| } |
| } else if ((SG_LIB_CAT_ABORTED_COMMAND == ret) && first) { |
| if (--max_aborted > 0) |
| fprintf(stderr, "Aborted command, continuing (w)\n"); |
| else { |
| fprintf(stderr, "Aborted command, too many (w)\n"); |
| break; |
| } |
| } else if (ret < 0) |
| break; |
| else if (retries_tmp > 0) { |
| fprintf(stderr, ">>> retrying a sgio write, " |
| "lba=0x%llx\n", (unsigned long long)seek); |
| --retries_tmp; |
| ++num_retries; |
| if (unrecovered_errs > 0) |
| --unrecovered_errs; |
| } else |
| break; |
| first = 0; |
| } |
| if (0 != ret) { |
| fprintf(stderr, "sg_write failed,%s seek=%lld\n", |
| ((-2 == ret) ? " try reducing bpt," : ""), seek); |
| break; |
| } else { |
| out_full += blocks; |
| if (dio && (0 == dio_tmp)) |
| dio_incomplete++; |
| } |
| } else if (FT_DEV_NULL & out_type) |
| out_full += blocks; /* act as if written out without error */ |
| else { |
| while (((res = write(outfd, wrkPos, blocks * blk_sz)) < 0) |
| && (EINTR == errno)) |
| ; |
| if (verbose > 2) |
| fprintf(stderr, "write(unix): count=%d, res=%d\n", |
| blocks * blk_sz, res); |
| if (res < 0) { |
| snprintf(ebuff, EBUFF_SZ, ME "writing, seek=%lld ", seek); |
| perror(ebuff); |
| ret = -1; |
| break; |
| } else if (res < blocks * blk_sz) { |
| fprintf(stderr, "output file probably full, seek=%lld ", seek); |
| blocks = res / blk_sz; |
| out_full += blocks; |
| if ((res % blk_sz) > 0) |
| out_partial++; |
| ret = -1; |
| break; |
| } else |
| out_full += blocks; |
| } |
| if (dd_count > 0) |
| dd_count -= blocks; |
| skip += blocks; |
| seek += blocks; |
| } /* end of main loop that does the copy ... */ |
| |
| if (do_time) |
| calc_duration_throughput(0); |
| |
| if (do_sync) { |
| if (FT_SG & out_type) { |
| fprintf(stderr, ">> Synchronizing cache on %s\n", outf); |
| res = sg_ll_sync_cache_10(outfd, 0, 0, 0, 0, 0, 0, 0); |
| if (SG_LIB_CAT_UNIT_ATTENTION == res) { |
| fprintf(stderr, "Unit attention (out, sync cache), " |
| "continuing\n"); |
| res = sg_ll_sync_cache_10(outfd, 0, 0, 0, 0, 0, 0, 0); |
| } |
| if (0 != res) |
| fprintf(stderr, "Unable to synchronize cache\n"); |
| } |
| } |
| free(wrkBuff); |
| if (STDIN_FILENO != infd) |
| close(infd); |
| if (! ((STDOUT_FILENO == outfd) || (FT_DEV_NULL & out_type))) |
| close(outfd); |
| if (0 != dd_count) { |
| fprintf(stderr, "Some error occurred,"); |
| if (0 == ret) |
| ret = SG_LIB_CAT_OTHER; |
| } |
| print_stats(""); |
| if (dio_incomplete) { |
| int fd; |
| char c; |
| |
| fprintf(stderr, ">> Direct IO requested but incomplete %d times\n", |
| dio_incomplete); |
| if ((fd = open(proc_allow_dio, O_RDONLY)) >= 0) { |
| if (1 == read(fd, &c, 1)) { |
| if ('0' == c) |
| fprintf(stderr, ">>> %s set to '0' but should be set " |
| "to '1' for direct IO\n", proc_allow_dio); |
| } |
| close(fd); |
| } |
| } |
| if (sum_of_resids) |
| fprintf(stderr, ">> Non-zero sum of residual counts=%d\n", |
| sum_of_resids); |
| return (ret >= 0) ? ret : SG_LIB_CAT_OTHER; |
| } |
