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author | cvs2svn <admin@example.com> | 2025-04-14 17:32:06 +0000 |
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committer | cvs2svn <admin@example.com> | 2025-04-14 17:32:06 +0000 |
commit | eb8dd9dca1228af0cd132f515509051ecfabf6f6 (patch) | |
tree | edb6da6af7e865d488dc1a29309f1e1ec226e603 /src/lib/libc/net/if_nameindex.c | |
parent | 247f0352e0ed72a4f476db9dc91f4d982bc83eb2 (diff) | |
download | openbsd-tb_20250414.tar.gz openbsd-tb_20250414.tar.bz2 openbsd-tb_20250414.zip |
This commit was manufactured by cvs2git to create tag 'tb_20250414'.tb_20250414
Diffstat (limited to 'src/lib/libc/net/if_nameindex.c')
-rw-r--r-- | src/lib/libc/net/if_nameindex.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/src/lib/libc/net/if_nameindex.c b/src/lib/libc/net/if_nameindex.c deleted file mode 100644 index 6e5bc0809a..0000000000 --- a/src/lib/libc/net/if_nameindex.c +++ /dev/null | |||
@@ -1,145 +0,0 @@ | |||
1 | /* $OpenBSD: if_nameindex.c,v 1.13 2016/12/16 17:44:59 krw Exp $ */ | ||
2 | /* $KAME: if_nameindex.c,v 1.7 2000/11/24 08:17:20 itojun Exp $ */ | ||
3 | |||
4 | /*- | ||
5 | * Copyright (c) 2015 Claudio Jeker <claudio@openbsd.org> | ||
6 | * Copyright (c) 1997, 2000 | ||
7 | * Berkeley Software Design, Inc. All rights reserved. | ||
8 | * | ||
9 | * Redistribution and use in source and binary forms, with or without | ||
10 | * modification, are permitted provided that the following conditions | ||
11 | * are met: | ||
12 | * 1. Redistributions of source code must retain the above copyright | ||
13 | * notice, this list of conditions and the following disclaimer. | ||
14 | * | ||
15 | * THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND | ||
16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
18 | * ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE | ||
19 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
20 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
21 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
22 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
25 | * SUCH DAMAGE. | ||
26 | * | ||
27 | * BSDI Id: if_nameindex.c,v 2.3 2000/04/17 22:38:05 dab Exp | ||
28 | */ | ||
29 | |||
30 | #include <sys/types.h> | ||
31 | #include <sys/socket.h> | ||
32 | #include <sys/sysctl.h> | ||
33 | #include <net/if.h> | ||
34 | #include <stdlib.h> | ||
35 | #include <string.h> | ||
36 | #include <errno.h> | ||
37 | |||
38 | /* | ||
39 | * From RFC 2553: | ||
40 | * | ||
41 | * 4.3 Return All Interface Names and Indexes | ||
42 | * | ||
43 | * The if_nameindex structure holds the information about a single | ||
44 | * interface and is defined as a result of including the <net/if.h> | ||
45 | * header. | ||
46 | * | ||
47 | * struct if_nameindex { | ||
48 | * unsigned int if_index; | ||
49 | * char *if_name; | ||
50 | * }; | ||
51 | * | ||
52 | * The final function returns an array of if_nameindex structures, one | ||
53 | * structure per interface. | ||
54 | * | ||
55 | * struct if_nameindex *if_nameindex(void); | ||
56 | * | ||
57 | * The end of the array of structures is indicated by a structure with | ||
58 | * an if_index of 0 and an if_name of NULL. The function returns a NULL | ||
59 | * pointer upon an error, and would set errno to the appropriate value. | ||
60 | * | ||
61 | * The memory used for this array of structures along with the interface | ||
62 | * names pointed to by the if_name members is obtained dynamically. | ||
63 | * This memory is freed by the next function. | ||
64 | * | ||
65 | * 4.4. Free Memory | ||
66 | * | ||
67 | * The following function frees the dynamic memory that was allocated by | ||
68 | * if_nameindex(). | ||
69 | * | ||
70 | * #include <net/if.h> | ||
71 | * | ||
72 | * void if_freenameindex(struct if_nameindex *ptr); | ||
73 | * | ||
74 | * The argument to this function must be a pointer that was returned by | ||
75 | * if_nameindex(). | ||
76 | */ | ||
77 | |||
78 | struct if_nameindex * | ||
79 | if_nameindex(void) | ||
80 | { | ||
81 | struct if_nameindex_msg *ifnm = NULL; | ||
82 | struct if_nameindex *ifni = NULL, *ifni2; | ||
83 | char *cp; | ||
84 | size_t needed; | ||
85 | unsigned int ni, i; | ||
86 | int mib[6]; | ||
87 | |||
88 | mib[0] = CTL_NET; | ||
89 | mib[1] = PF_ROUTE; | ||
90 | mib[2] = 0; /* protocol */ | ||
91 | mib[3] = 0; /* not used */ | ||
92 | mib[4] = NET_RT_IFNAMES; | ||
93 | mib[5] = 0; /* no flags */ | ||
94 | while (1) { | ||
95 | struct if_nameindex_msg *buf = NULL; | ||
96 | |||
97 | if (sysctl(mib, 6, NULL, &needed, NULL, 0) == -1) | ||
98 | goto out; | ||
99 | if (needed == 0) | ||
100 | break; | ||
101 | if ((buf = realloc(ifnm, needed)) == NULL) | ||
102 | goto out; | ||
103 | ifnm = buf; | ||
104 | if (sysctl(mib, 6, ifnm, &needed, NULL, 0) == -1) { | ||
105 | if (errno == ENOMEM) | ||
106 | continue; | ||
107 | goto out; | ||
108 | } | ||
109 | break; | ||
110 | } | ||
111 | |||
112 | /* | ||
113 | * Allocate a chunk of memory, use the first part for the array of | ||
114 | * structures, and the last part for the strings. | ||
115 | */ | ||
116 | ni = needed / sizeof(*ifnm); | ||
117 | ifni = calloc(ni + 1, sizeof(struct if_nameindex) + IF_NAMESIZE); | ||
118 | if (ifni == NULL) | ||
119 | goto out; | ||
120 | cp = (char *)(ifni + (ni + 1)); | ||
121 | |||
122 | ifni2 = ifni; | ||
123 | for (i = 0; i < ni; i++) { | ||
124 | ifni2->if_index = ifnm[i].if_index; | ||
125 | /* don't care about truncation */ | ||
126 | strlcpy(cp, ifnm[i].if_name, IF_NAMESIZE); | ||
127 | ifni2->if_name = cp; | ||
128 | ifni2++; | ||
129 | cp += IF_NAMESIZE; | ||
130 | } | ||
131 | /* Finally, terminate the array. */ | ||
132 | ifni2->if_index = 0; | ||
133 | ifni2->if_name = NULL; | ||
134 | out: | ||
135 | free(ifnm); | ||
136 | return ifni; | ||
137 | } | ||
138 | |||
139 | void | ||
140 | if_freenameindex(struct if_nameindex *ptr) | ||
141 | { | ||
142 | free(ptr); | ||
143 | } | ||
144 | DEF_WEAK(if_nameindex); | ||
145 | DEF_WEAK(if_freenameindex); | ||