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Annotation of qemu/net/util.c, revision 1.1.1.1

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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