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Annotation of qemu/net/util.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * QEMU System Emulator
        !             3:  *
        !             4:  * Copyright (c) 2003-2008 Fabrice Bellard
        !             5:  *
        !             6:  * Permission is hereby granted, free of charge, to any person obtaining a copy
        !             7:  * of this software and associated documentation files (the "Software"), to deal
        !             8:  * in the Software without restriction, including without limitation the rights
        !             9:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
        !            10:  * copies of the Software, and to permit persons to whom the Software is
        !            11:  * furnished to do so, subject to the following conditions:
        !            12:  *
        !            13:  * The above copyright notice and this permission notice shall be included in
        !            14:  * all copies or substantial portions of the Software.
        !            15:  *
        !            16:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
        !            17:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
        !            19:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
        !            20:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
        !            21:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
        !            22:  * THE SOFTWARE.
        !            23:  */
        !            24: 
        !            25: #include "net/util.h"
        !            26: #include <errno.h>
        !            27: #include <stdlib.h>
        !            28: 
        !            29: int net_parse_macaddr(uint8_t *macaddr, const char *p)
        !            30: {
        !            31:     int i;
        !            32:     char *last_char;
        !            33:     long int offset;
        !            34: 
        !            35:     errno = 0;
        !            36:     offset = strtol(p, &last_char, 0);
        !            37:     if (errno == 0 && *last_char == '\0' &&
        !            38:         offset >= 0 && offset <= 0xFFFFFF) {
        !            39:         macaddr[3] = (offset & 0xFF0000) >> 16;
        !            40:         macaddr[4] = (offset & 0xFF00) >> 8;
        !            41:         macaddr[5] = offset & 0xFF;
        !            42:         return 0;
        !            43:     }
        !            44: 
        !            45:     for (i = 0; i < 6; i++) {
        !            46:         macaddr[i] = strtol(p, (char **)&p, 16);
        !            47:         if (i == 5) {
        !            48:             if (*p != '\0') {
        !            49:                 return -1;
        !            50:             }
        !            51:         } else {
        !            52:             if (*p != ':' && *p != '-') {
        !            53:                 return -1;
        !            54:             }
        !            55:             p++;
        !            56:         }
        !            57:     }
        !            58: 
        !            59:     return 0;
        !            60: }

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