mirror of
https://git.proxmox.com/git/mirror_iproute2
synced 2025-08-13 23:46:19 +00:00
fbef655568
Replace the iproute2 snapshot with a version string which is autogenerated as part of the build process using git describe. This will also allow seeing if the version of the command is built from the same sources is as upstream. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
150 lines
3.0 KiB
C
150 lines
3.0 KiB
C
/*
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* genl.c "genl" utility frontend.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Jamal Hadi Salim
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <dlfcn.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <string.h>
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#include <errno.h>
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h> /* until we put our own header */
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#include "version.h"
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#include "utils.h"
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#include "genl_utils.h"
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int show_stats;
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int show_details;
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int show_raw;
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static void *BODY;
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static struct genl_util *genl_list;
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static int print_nofopt(struct nlmsghdr *n, void *arg)
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{
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fprintf((FILE *) arg, "unknown genl type ..\n");
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return 0;
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}
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static int parse_nofopt(struct genl_util *f, int argc, char **argv)
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{
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if (argc) {
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fprintf(stderr,
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"Unknown genl \"%s\", hence option \"%s\" is unparsable\n",
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f->name, *argv);
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return -1;
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}
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return 0;
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}
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static struct genl_util *get_genl_kind(const char *str)
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{
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void *dlh;
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char buf[256];
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struct genl_util *f;
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for (f = genl_list; f; f = f->next)
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if (strcmp(f->name, str) == 0)
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return f;
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snprintf(buf, sizeof(buf), "%s.so", str);
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dlh = dlopen(buf, RTLD_LAZY);
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if (dlh == NULL) {
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dlh = BODY;
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if (dlh == NULL) {
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dlh = BODY = dlopen(NULL, RTLD_LAZY);
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if (dlh == NULL)
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goto noexist;
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}
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}
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snprintf(buf, sizeof(buf), "%s_genl_util", str);
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f = dlsym(dlh, buf);
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if (f == NULL)
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goto noexist;
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reg:
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f->next = genl_list;
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genl_list = f;
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return f;
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noexist:
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f = calloc(1, sizeof(*f));
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if (f) {
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strncpy(f->name, str, 15);
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f->parse_genlopt = parse_nofopt;
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f->print_genlopt = print_nofopt;
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goto reg;
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}
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return f;
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}
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static void usage(void) __attribute__((noreturn));
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static void usage(void)
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{
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fprintf(stderr,
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"Usage: genl [ OPTIONS ] OBJECT [help] }\n"
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"where OBJECT := { ctrl etc }\n"
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" OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -V[ersion] | -h[elp] }\n");
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exit(-1);
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}
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int main(int argc, char **argv)
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{
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while (argc > 1) {
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if (argv[1][0] != '-')
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break;
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if (matches(argv[1], "-stats") == 0 ||
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matches(argv[1], "-statistics") == 0) {
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++show_stats;
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} else if (matches(argv[1], "-details") == 0) {
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++show_details;
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} else if (matches(argv[1], "-raw") == 0) {
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++show_raw;
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} else if (matches(argv[1], "-Version") == 0) {
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printf("genl utility, iproute2-%s\n", version);
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exit(0);
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} else if (matches(argv[1], "-help") == 0) {
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usage();
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} else {
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fprintf(stderr,
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"Option \"%s\" is unknown, try \"genl -help\".\n",
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argv[1]);
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exit(-1);
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}
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argc--; argv++;
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}
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if (argc > 1) {
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struct genl_util *a;
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int ret;
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a = get_genl_kind(argv[1]);
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if (!a) {
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fprintf(stderr, "bad genl %s\n", argv[1]);
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exit(-1);
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}
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ret = a->parse_genlopt(a, argc-1, argv+1);
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return ret;
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}
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usage();
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}
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