diff options
Diffstat (limited to 'examples/sgq_dd.c')
| -rw-r--r-- | examples/sgq_dd.c | 59 |
1 files changed, 31 insertions, 28 deletions
diff --git a/examples/sgq_dd.c b/examples/sgq_dd.c index debbe377..00a98aad 100644 --- a/examples/sgq_dd.c +++ b/examples/sgq_dd.c @@ -1,3 +1,32 @@ +/* + * A utility program for the Linux OS SCSI generic ("sg") device driver. + * Copyright (C) 1999-2018 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. + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This program is a specialization of the Unix "dd" command in which + * one or both of the given files is a scsi generic device or a raw + * device. A block size ('bs') is assumed to be 512 if not given. This + * program complains if 'ibs' or 'obs' are given with some other value + * than 'bs'. If 'if' is not given or 'if=-' then stdin is assumed. If + * 'of' is not given or 'of=-' then stdout assumed. Multipliers: + * 'c','C' *1 'b','B' *512 'k' *1024 'K' *1000 + * 'm' *(1024^2) 'M' *(1000^2) 'g' *(1024^3) 'G' *(1000^3) + * + * 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 (16KB + * in this case) are transferred to or from the sg device in a single SCSI + * command. + * + * This version should compile with Linux sg drivers with version numbers + * >= 30000 . This version uses queuing within the Linux sg driver. + */ + #define _XOPEN_SOURCE 500 #include <unistd.h> @@ -23,34 +52,8 @@ typedef uint8_t u_char; /* horrible, for scsi.h */ #include "sg_io_linux.h" #include "sg_unaligned.h" -/* A utility program for the Linux OS SCSI generic ("sg") device driver. -* Copyright (C) 1999-2018 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 specialization of the Unix "dd" command in which - one or both of the given files is a scsi generic device or a raw - device. A block size ('bs') is assumed to be 512 if not given. This - program complains if 'ibs' or 'obs' are given with some other value - than 'bs'. If 'if' is not given or 'if=-' then stdin is assumed. If - 'of' is not given or 'of=-' then stdout assumed. Multipliers: - 'c','C' *1 'b','B' *512 'k' *1024 'K' *1000 - 'm' *(1024^2) 'M' *(1000^2) 'g' *(1024^3) 'G' *(1000^3) - - 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 (16KB - in this case) are transferred to or from the sg device in a single SCSI - command. - - This version should compile with Linux sg drivers with version numbers - >= 30000 . This version uses queuing within the Linux sg driver. - -*/ - -static char * version_str = "0.61 20180627"; + +static char * version_str = "0.62 20181207"; /* resurrected from "0.55 20020509" */ #define DEF_BLOCK_SIZE 512 |