nvme_util.c

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    1 /*-
    2  * Copyright (C) 2013 Intel Corporation
    3  * Copyright (C) 1997 Justin T. Gibbs
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/9.2/sys/dev/nvme/nvme_util.c 253631 2013-07-24 22:48:29Z jimharris $");
   30 
   31 #include <sys/param.h>
   32 #include <dev/nvme/nvme.h>
   33 
   34 void
   35 nvme_strvis(uint8_t *dst, const uint8_t *src, int dstlen, int srclen)
   36 {
   37         uint8_t *cur_pos;
   38 
   39         /* Trim leading/trailing spaces, nulls. */
   40         while (srclen > 0 && src[0] == ' ')
   41                 src++, srclen--;
   42         while (srclen > 0
   43             && (src[srclen - 1] == ' ' || src[srclen - 1] == '\0'))
   44                 srclen--;
   45 
   46         while (srclen > 0 && dstlen > 1) {
   47                 cur_pos = dst;
   48 
   49                 /* Show '?' for non-printable characters. */
   50                 if (*src < 0x20 || *src >= 0x7F)
   51                         *cur_pos++ = '?';
   52                 else
   53                         *cur_pos++ = *src;
   54                 src++;
   55                 srclen--;
   56                 dstlen -= cur_pos - dst;
   57                 dst = cur_pos;
   58         }
   59         *dst = '\0';
   60 }
   61

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FreeBSD/Linux Kernel Cross Reference sys/dev/nvme/nvme_util.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/nvme/nvme_util.c