| #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; |
| } |