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author | Thomas Graf <tgraf@suug.ch> | 2007-09-14 23:28:01 (GMT) |
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committer | Thomas Graf <tgraf@suug.ch> | 2007-09-14 23:28:01 (GMT) |
commit | 44d362409d5469aed47d19e7908d19bd194493a4 (patch) | |
tree | 5d1e739a4566f3af796273e5c3f78ca53d234df6 /src/nl-link-ifindex2name.c | |
download | libnl-44d362409d5469aed47d19e7908d19bd194493a4.zip libnl-44d362409d5469aed47d19e7908d19bd194493a4.tar.gz libnl-44d362409d5469aed47d19e7908d19bd194493a4.tar.bz2 |
Initial import
Diffstat (limited to 'src/nl-link-ifindex2name.c')
-rw-r--r-- | src/nl-link-ifindex2name.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/nl-link-ifindex2name.c b/src/nl-link-ifindex2name.c new file mode 100644 index 0000000..e1043fb --- /dev/null +++ b/src/nl-link-ifindex2name.c @@ -0,0 +1,55 @@ +/* + * src/nl-link-ifindex2name.c Transform a interface index to its name + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch> + */ + +#include "utils.h" + +int main(int argc, char **argv) +{ + struct nl_handle *nlh; + struct nl_cache *link_cache; + int err = -1, ifindex; + char dst[32] = {0}; + const char *name; + + if (nltool_init(argc, argv) < 0) + return -1; + + if (argc < 2 || !strcmp(argv[1], "-h")) { + fprintf(stderr, "Usage: nl-link-ifindex2name <ifindex>\n"); + return -1; + } + + nlh = nltool_alloc_handle(); + if (!nlh) + return -1; + + if (nltool_connect(nlh, NETLINK_ROUTE) < 0) + goto errout; + + link_cache = nltool_alloc_link_cache(nlh); + if (!link_cache) + goto errout; + + ifindex = strtoul(argv[1], NULL, 0); + + if (!(name = rtnl_link_i2name(link_cache, ifindex, dst, sizeof(dst)))) + fprintf(stderr, "Interface index %d does not exist\n", ifindex); + else + printf("%s\n", name); + + nl_cache_free(link_cache); + err = 0; +errout: + nl_close(nlh); + nl_handle_destroy(nlh); + + return err; +} |