2 * Copyright (c) 2001-2018 The strace developers.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifdef HAVE_IF_INDEXTONAME
34 # define INI_PFX "if_nametoindex(\""
35 # define INI_SFX "\")"
36 # define IFNAME_QUOTED_SZ (sizeof(IFNAMSIZ) * 4 + 3)
39 get_ifname(const unsigned int ifindex)
41 static char name_quoted_buf[IFNAME_QUOTED_SZ];
42 char name_buf[IFNAMSIZ];
44 if (!if_indextoname(ifindex, name_buf))
47 if (string_quote(name_buf, name_quoted_buf, sizeof(name_buf),
48 QUOTE_0_TERMINATED | QUOTE_OMIT_LEADING_TRAILING_QUOTES,
52 return name_quoted_buf;
56 sprint_ifname(const unsigned int ifindex)
58 static char res[IFNAME_QUOTED_SZ + sizeof(INI_PFX INI_SFX)];
60 const char *name_quoted = get_ifname(ifindex);
65 xsprintf(res, INI_PFX "%s" INI_SFX, name_quoted);
70 #else /* !HAVE_IF_INDEXTONAME */
72 const char *get_ifname(const unsigned int ifindex) { return NULL; }
74 #endif /* HAVE_IF_INDEXTONAME */
77 print_ifindex(const unsigned int ifindex)
79 #ifdef HAVE_IF_INDEXTONAME
80 print_xlat_ex(ifindex, sprint_ifname(ifindex), XLAT_STYLE_FMT_U);
82 tprintf("%u", ifindex);