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iplink.c
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iplink.c
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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <libgen.h>
#include <strcase.h>
#include <nlinline.h>
char *progname;
void usage(void) {
fprintf(stderr,
"Usage: %s add [ name ] NAME\n"
" [ index IDX ]\n"
" [ vnl DATA ]\n"
" type TYPE\n\n"
" %s del { DEVICE | dev DEVICE }\n"
" [index IDX ]\n"
" [type TYPE]\n\n"
"TYPE := any type supported by the stack\n",
progname,progname);
exit(1);
}
#define IPLINK_NONE 0
#define IPLINK_ADD 1
#define IPLINK_DEL 2
int main(int argc, char *argv[]) {
int iplink_op = IPLINK_NONE;
int rv;
char *name = NULL;
char *type = NULL;
char *sindex = NULL;
char *vnl = NULL;
int i;
unsigned int index = 0;
progname = basename(argv[0]);
if (argc < 3)
usage();
switch(strcase(argv[1])) {
case STRCASE(a,d,d): iplink_op = IPLINK_ADD;
break;
case STRCASE(d,e,l,e,t,e):
case STRCASE(d,e,l): iplink_op = IPLINK_DEL;
break;
default:
usage();
}
for (i = 2; i < argc; i++) {
switch(strcase(argv[i])) {
case STRCASE(n,a,m,e):
case STRCASE(d,e,v):
if (++i >= argc) usage();
name = argv[i];
break;
case STRCASE(t,y,p,e):
if (++i >= argc) usage();
type = argv[i];
break;
case STRCASE(i,n,d,e,x):
if (++i >= argc) usage();
sindex = argv[i];
break;
case STRCASE(v,n,l):
case STRCASE(d,a,t,a):
if (++i >= argc) usage();
vnl = argv[i];
break;
default:
if (name == NULL)
name = argv[i];
else
usage();
}
}
if (sindex) index = strtoul(sindex, NULL, 0);
switch(iplink_op) {
case IPLINK_ADD:
if (name == NULL) usage();
if (type == NULL) usage();
rv = nlinline_iplink_add(name, index, type,
nl_iplink_strdata(IFLA_VDE_VNL, vnl));
break;
case IPLINK_DEL:
if (name == NULL && index == 0) usage();
rv = nlinline_iplink_del(name, index);
break;
default:
usage();
}
if (rv == -1) {
perror(progname);
return 1;
} else
return 0;
}