You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
148 lines
3.0 KiB
148 lines
3.0 KiB
/*
|
|
* genl.c "genl" utility frontend.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*
|
|
* Authors: Jamal Hadi Salim
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <syslog.h>
|
|
#include <fcntl.h>
|
|
#include <dlfcn.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <linux/netlink.h>
|
|
#include <linux/rtnetlink.h> /* until we put our own header */
|
|
#include "SNAPSHOT.h"
|
|
#include "utils.h"
|
|
#include "genl_utils.h"
|
|
|
|
int show_stats = 0;
|
|
int show_details = 0;
|
|
int show_raw = 0;
|
|
|
|
static void *BODY;
|
|
static struct genl_util * genl_list;
|
|
|
|
|
|
static int print_nofopt(const struct sockaddr_nl *who, struct nlmsghdr *n,
|
|
void *arg)
|
|
{
|
|
fprintf((FILE *) arg, "unknown genl type ..\n");
|
|
return 0;
|
|
}
|
|
|
|
static int parse_nofopt(struct genl_util *f, int argc, char **argv)
|
|
{
|
|
if (argc) {
|
|
fprintf(stderr, "Unknown genl \"%s\", hence option \"%s\" "
|
|
"is unparsable\n", f->name, *argv);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct genl_util *get_genl_kind(const char *str)
|
|
{
|
|
void *dlh;
|
|
char buf[256];
|
|
struct genl_util *f;
|
|
|
|
for (f = genl_list; f; f = f->next)
|
|
if (strcmp(f->name, str) == 0)
|
|
return f;
|
|
|
|
snprintf(buf, sizeof(buf), "%s.so", str);
|
|
dlh = dlopen(buf, RTLD_LAZY);
|
|
if (dlh == NULL) {
|
|
dlh = BODY;
|
|
if (dlh == NULL) {
|
|
dlh = BODY = dlopen(NULL, RTLD_LAZY);
|
|
if (dlh == NULL)
|
|
goto noexist;
|
|
}
|
|
}
|
|
|
|
snprintf(buf, sizeof(buf), "%s_genl_util", str);
|
|
|
|
f = dlsym(dlh, buf);
|
|
if (f == NULL)
|
|
goto noexist;
|
|
reg:
|
|
f->next = genl_list;
|
|
genl_list = f;
|
|
return f;
|
|
|
|
noexist:
|
|
f = calloc(1, sizeof(*f));
|
|
if (f) {
|
|
strncpy(f->name, str, 15);
|
|
f->parse_genlopt = parse_nofopt;
|
|
f->print_genlopt = print_nofopt;
|
|
goto reg;
|
|
}
|
|
return f;
|
|
}
|
|
|
|
static void usage(void) __attribute__((noreturn));
|
|
|
|
static void usage(void)
|
|
{
|
|
fprintf(stderr, "Usage: genl [ OPTIONS ] OBJECT | help }\n"
|
|
"where OBJECT := { ctrl etc }\n"
|
|
" OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] }\n");
|
|
exit(-1);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
while (argc > 1) {
|
|
if (argv[1][0] != '-')
|
|
break;
|
|
if (matches(argv[1], "-stats") == 0 ||
|
|
matches(argv[1], "-statistics") == 0) {
|
|
++show_stats;
|
|
} else if (matches(argv[1], "-details") == 0) {
|
|
++show_details;
|
|
} else if (matches(argv[1], "-raw") == 0) {
|
|
++show_raw;
|
|
} else if (matches(argv[1], "-Version") == 0) {
|
|
printf("genl utility, iproute2-ss%s\n", SNAPSHOT);
|
|
exit(0);
|
|
} else if (matches(argv[1], "-help") == 0) {
|
|
usage();
|
|
} else {
|
|
fprintf(stderr, "Option \"%s\" is unknown, try "
|
|
"\"genl -help\".\n", argv[1]);
|
|
exit(-1);
|
|
}
|
|
argc--; argv++;
|
|
}
|
|
|
|
if (argc > 1) {
|
|
int ret;
|
|
struct genl_util *a = NULL;
|
|
a = get_genl_kind(argv[1]);
|
|
if (!a) {
|
|
fprintf(stderr,"bad genl %s\n", argv[1]);
|
|
exit(-1);
|
|
}
|
|
|
|
ret = a->parse_genlopt(a, argc-1, argv+1);
|
|
return ret;
|
|
}
|
|
|
|
usage();
|
|
}
|