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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
int main(int argc, char *argv[])
{
char *arguments, *pos;
int i, writefd, len = 0;
if ((writefd = open(EBTD_PIPE, O_WRONLY, 0)) == -1) {
perror("open");
return -1;
}
if (argc > EBTD_ARGC_MAX) {
printf("ebtablesd accepts at most %d arguments, %d arguments "
"were specified. If you need this many arguments, "
"recompile this tool with a higher value for "
"EBTD_ARGC_MAX.\n", EBTD_ARGC_MAX - 1, argc - 1);
return -1;
} else if (argc == 1) {
printf("At least one argument is needed.\n");
return -1;
}
for (i = 0; i < argc; i++)
len += strlen(argv[i]);
/* Don't forget '\0' */
len += argc;
if (len > EBTD_CMDLINE_MAXLN) {
printf("ebtablesd has a maximum command line argument length "
"of %d, an argument length of %d was received. If a "
"smaller length is unfeasible, recompile this tool "
"with a higher value for EBTD_CMDLINE_MAXLN.\n",
EBTD_CMDLINE_MAXLN, len);
return -1;
}
if (!(arguments = (char *)malloc(len))) {
printf("ebtablesu: out of memory.\n");
return -1;
}
pos = arguments;
for (i = 0; i < argc; i++) {
strcpy(pos, argv[i]);
pos += strlen(argv[i]) + 1;
}
*(pos-1) = '\n';
if (write(writefd, arguments, len) == -1) {
perror("write");
return -1;
}
return 0;
}
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