cfe_env.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2009 Neelkanth Natu
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/param.h>
   30 #include <sys/kenv.h>
   31 
   32 #include <dev/cfe/cfe_api.h>
   33 
   34 __FBSDID("$FreeBSD$");
   35 
   36 #ifndef CFE_ENV_SIZE
   37 #define CFE_ENV_SIZE    PAGE_SIZE       /* default is one page */
   38 #endif
   39 
   40 extern void cfe_env_init(void);
   41 
   42 static char cfe_env_buf[CFE_ENV_SIZE];
   43 
   44 void
   45 cfe_env_init(void)
   46 {
   47         int idx;
   48         char name[KENV_MNAMELEN], val[KENV_MVALLEN];
   49 
   50         init_static_kenv(cfe_env_buf, CFE_ENV_SIZE);
   51 
   52         idx = 0;
   53         while (1) {
   54                 if (cfe_enumenv(idx, name, sizeof(name), val, sizeof(val)) != 0)
   55                         break;
   56 
   57                 if (kern_setenv(name, val) != 0) {
   58                         printf("No space to store CFE env: \"%s=%s\"\n",
   59                                 name, val);
   60                 }
   61                 ++idx;
   62         }
   63 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/cfe/cfe_env.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/cfe/cfe_env.c