ia64/xen-unstable

view tools/vnet/vnet-module/varp_util.c @ 6946:e703abaf6e3d

Add behaviour to the remove methods to remove the transaction's path itself. This allows us to write Remove(path) to remove the specified path rather than having to slice the path ourselves.
author emellor@ewan
date Sun Sep 18 14:42:13 2005 +0100 (2005-09-18)
parents 3233e7ecfa9f
children 06d84bf87159
line source
1 /*
2 * Copyright (C) 2005 Mike Wray <mike.wray@hp.com>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free software Foundation, Inc.,
16 * 59 Temple Place, suite 330, Boston, MA 02111-1307 USA
17 *
18 */
20 static int hex16(char *s, uint16_t *val)
21 {
22 int err = -EINVAL;
23 uint16_t v = 0;
25 for( ; *s; s++){
26 v <<= 4;
27 if('0' <= *s && *s <= '9'){
28 v |= *s - '0';
29 } else if('A' <= *s && *s <= 'F'){
30 v |= *s - 'A' + 10;
31 } else if('a' <= *s && *s <= 'f'){
32 v |= *s - 'a' + 10;
33 } else {
34 goto exit;
35 }
36 }
37 err = 0;
38 exit:
39 *val = (err ? 0 : v);
40 return err;
41 }
43 int VnetId_aton(const char *s, VnetId *vnet){
44 int err = -EINVAL;
45 const char *p, *q;
46 uint16_t v;
47 char buf[5];
48 int buf_n = sizeof(buf) - 1;
49 int i, n;
50 const int elts_n = 8;
52 q = s;
53 p = strchr(q, ':');
54 i = (p ? 0 : elts_n - 1);
55 do {
56 if(!p){
57 if(i < elts_n - 1) goto exit;
58 p = s + strlen(s);
59 }
60 n = p - q;
61 if(n > buf_n) goto exit;
62 memcpy(buf, q, n);
63 buf[n] = '\0';
64 err = hex16(buf, &v);
65 if(err) goto exit;
66 vnet->u.vnet16[i] = htons(v);
67 q = p+1;
68 p = strchr(q, ':');
69 i++;
70 } while(i < elts_n);
71 err = 0;
72 exit:
73 if(err){
74 *vnet = (VnetId){};
75 }
76 return err;
77 }