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-rw-r--r--sgm_dd.c101
1 files changed, 60 insertions, 41 deletions
diff --git a/sgm_dd.c b/sgm_dd.c
index 1ea20653..d2c3bbd0 100644
--- a/sgm_dd.c
+++ b/sgm_dd.c
@@ -1,5 +1,7 @@
#define _XOPEN_SOURCE 500
+#ifndef _GNU_SOURCE
#define _GNU_SOURCE
+#endif
#include <unistd.h>
#include <fcntl.h>
@@ -21,12 +23,11 @@
#include "sg_lib.h"
#include "sg_cmds_basic.h"
#include "sg_io_linux.h"
-#include "llseek.h"
/* A utility program for copying files. Specialised for "files" that
* represent devices that understand the SCSI command set.
*
-* Copyright (C) 1999 - 2006 D. Gilbert and P. Allworth
+* 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)
@@ -54,7 +55,7 @@
This version is designed for the linux kernel 2.4 and 2.6 series.
*/
-static char * version_str = "1.28 20061003";
+static char * version_str = "1.31 20070123";
#define DEF_BLOCK_SIZE 512
#define DEF_BLOCKS_PER_TRANSFER 128
@@ -246,33 +247,46 @@ static char * dd_filetype_str(int ft, char * buff)
void usage()
{
fprintf(stderr, "Usage: "
- "sgm_dd [bs=<n>] [count=<n>] [ibs=<n>] [if=<ifile>]"
- " [iflag=<flags>]\n"
- " [obs=<n>] [of=<ofile>] [oflag=<flags>] "
- "[seek=<n>] [skip=<n>]\n"
+ "sgm_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");
fprintf(stderr,
- " [bpt=<num>] [cdbsz=6|10|12|16] [dio=0|1] "
+ " [bpt=BPT] [cdbsz=6|10|12|16] [dio=0|1] "
"[fua=0|1|2|3]\n"
- " [sync=0|1] [time=<n>] [verbose=<n>]\n\n"
- " where:\n"
- " bpt is blocks_per_transfer (default is 128)\n"
- " bs must be device block size (default 512)\n"
- " cdbsz size of SCSI READ or WRITE command (default is 10)\n"
- " dio 0->indirect IO on write, 1->direct IO on write\n"
- " (only when read side is sg device (using mmap))\n"
- " fua force unit access: 0->don't(def), 1->of, 2->if, "
- "3->of+if\n");
+ " [sync=0|1] [time=0|1] [verbose=VERB]\n\n"
+ " where:\n"
+ " bpt is blocks_per_transfer (default is 128)\n"
+ " bs must be device block size (default 512)\n"
+ " cdbsz size of SCSI READ or WRITE cdb (default is 10)\n"
+ " count number of blocks to copy (def: device size)\n"
+ " dio 0->indirect IO on write, 1->direct IO on write\n"
+ " (only when read side is sg device (using mmap))\n"
+ " fua force unit access: 0->don't(def), 1->OFILE, "
+ "2->IFILE,\n"
+ " 3->OFILE+IFILE\n"
+ " if file or device to read from (def: stdin)\n");
fprintf(stderr,
- " iflag comma separated list from: [direct,dpo,dsync,excl,"
- "fua]\n"
- " oflag comma separated list from: [append,direct,dpo,"
+ " iflag comma separated list from: [direct,dpo,dsync,"
+ "excl,fua]\n"
+ " of file or device to write to (def: stdout), "
+ "OFILE of '.'\n"
+ " treated as /dev/null\n"
+ " oflag comma separated list from: [append,direct,dpo,"
"dsync,excl,fua]\n"
- " sync 0->no sync(def), 1->SYNCHRONIZE CACHE after xfer\n"
- " time 0->no timing(def), 1->time plus calculate "
+ " 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"
- " --version print version information then exit\n");
+ " verbose 0->quiet(def), 1->some noise, 2->more noise, "
+ "etc\n"
+ " --help print usage message then exit\n"
+ " --version print version information then exit\n\n"
+ "Copy from IFILE to OFILE, similar to dd command\n"
+ "specialized for SCSI devices for which mmap-ed IO attemped\n");
}
/* Return of 0 -> success, see sg_ll_read_capacity*() otherwise */
@@ -707,6 +721,7 @@ int main(int argc, char * argv[])
int scsi_cdbsz_in = DEF_SCSI_CDBSZ;
int scsi_cdbsz_out = DEF_SCSI_CDBSZ;
int cdbsz_given = 0;
+ int do_coe = 0; /* dummy, just accept + ignore */
int do_sync = 0;
int do_dio = 0;
int num_dio_not_done = 0;
@@ -750,7 +765,9 @@ int main(int argc, char * argv[])
scsi_cdbsz_in = sg_get_num(buf);
scsi_cdbsz_out = scsi_cdbsz_in;
cdbsz_given = 1;
- } else if (0 == strcmp(key,"count")) {
+ } else if (0 == strcmp(key,"coe"))
+ do_coe = sg_get_num(buf); /* dummy, just accept + ignore */
+ else if (0 == strcmp(key,"count")) {
dd_count = sg_get_llnum(buf);
if (-1LL == dd_count) {
fprintf(stderr, ME "bad argument to 'count'\n");
@@ -914,8 +931,8 @@ int main(int argc, char * argv[])
return SG_LIB_FILE_ERROR;
}
}
- wrkMmap = mmap(NULL, in_res_sz, PROT_READ | PROT_WRITE,
- MAP_SHARED, infd, 0);
+ wrkMmap = (unsigned char *)mmap(NULL, in_res_sz,
+ PROT_READ | PROT_WRITE, MAP_SHARED, infd, 0);
if (MAP_FAILED == wrkMmap) {
snprintf(ebuff, EBUFF_SZ,
ME "error using mmap() on file: %s", inf);
@@ -938,18 +955,19 @@ int main(int argc, char * argv[])
return SG_LIB_FILE_ERROR;
}
else if (skip > 0) {
- llse_loff_t offset = skip;
+ off64_t offset = skip;
offset *= blk_sz; /* could exceed 32 bits here! */
- if (llse_llseek(infd, offset, SEEK_SET) < 0) {
+ 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: llseek SEEK_SET, "
- "byte offset=0x%llx\n", offset);
+ fprintf(stderr, " >> skip: lseek64 SEEK_SET, "
+ "byte offset=0x%llx\n",
+ (unsigned long long)offset);
}
}
}
@@ -997,8 +1015,8 @@ int main(int argc, char * argv[])
}
}
if (NULL == wrkMmap) {
- wrkMmap = mmap(NULL, out_res_sz, PROT_READ | PROT_WRITE,
- MAP_SHARED, outfd, 0);
+ wrkMmap = (unsigned char *)mmap(NULL, out_res_sz,
+ PROT_READ | PROT_WRITE, MAP_SHARED, outfd, 0);
if (MAP_FAILED == wrkMmap) {
snprintf(ebuff, EBUFF_SZ,
ME "error using mmap() on file: %s", outf);
@@ -1036,24 +1054,25 @@ int main(int argc, char * argv[])
}
}
if (seek > 0) {
- llse_loff_t offset = seek;
+ off64_t offset = seek;
offset *= blk_sz; /* could exceed 32 bits here! */
- if (llse_llseek(outfd, offset, SEEK_SET) < 0) {
+ 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: llseek SEEK_SET, "
- "byte offset=0x%llx\n", offset);
+ 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, "Won't default both IFILE to stdin _and_ OFILE "
+ "to as stdout\n");
fprintf(stderr, "For more information use '--help'\n");
return SG_LIB_SYNTAX_ERROR;
}
@@ -1187,7 +1206,7 @@ int main(int argc, char * argv[])
wrkPos = wrkMmap;
else {
if ((FT_RAW == in_type) || (FT_RAW == out_type)) {
- wrkBuff = malloc(blk_sz * bpt + psz);
+ wrkBuff = (unsigned char *)malloc(blk_sz * bpt + psz);
if (0 == wrkBuff) {
fprintf(stderr, "Not enough user memory for raw\n");
return SG_LIB_FILE_ERROR;
@@ -1196,7 +1215,7 @@ int main(int argc, char * argv[])
(~(psz - 1)));
}
else {
- wrkBuff = malloc(blk_sz * bpt);
+ wrkBuff = (unsigned char *)malloc(blk_sz * bpt);
if (0 == wrkBuff) {
fprintf(stderr, "Not enough user memory\n");
return SG_LIB_FILE_ERROR;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-21 22:02:42 +0000