nvme_util.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (C) 2013 Intel Corporation
    5  * Copyright (C) 1997 Justin T. Gibbs
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 #include <sys/param.h>
   34 #include <dev/nvme/nvme.h>
   35 
   36 void
   37 nvme_strvis(uint8_t *dst, const uint8_t *src, int dstlen, int srclen)
   38 {
   39         uint8_t *cur_pos;
   40 
   41         /* Trim leading/trailing spaces, nulls. */
   42         while (srclen > 0 && src[0] == ' ')
   43                 src++, srclen--;
   44         while (srclen > 0
   45             && (src[srclen - 1] == ' ' || src[srclen - 1] == '\0'))
   46                 srclen--;
   47 
   48         while (srclen > 0 && dstlen > 1) {
   49                 cur_pos = dst;
   50 
   51                 /* Show '?' for non-printable characters. */
   52                 if (*src < 0x20 || *src >= 0x7F)
   53                         *cur_pos++ = '?';
   54                 else
   55                         *cur_pos++ = *src;
   56                 src++;
   57                 srclen--;
   58                 dstlen -= cur_pos - dst;
   59                 dst = cur_pos;
   60         }
   61         *dst = '\0';
   62 }

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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