-int cgit_open_filter(struct cgit_filter *filter, struct cgit_repo * repo)
-{
-
- filter->old_stdout = chk_positive(dup(STDOUT_FILENO),
- "Unable to duplicate STDOUT");
- chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess");
- filter->pid = chk_non_negative(fork(), "Unable to create subprocess");
- if (filter->pid == 0) {
- close(filter->pipe_fh[1]);
- chk_non_negative(dup2(filter->pipe_fh[0], STDIN_FILENO),
- "Unable to use pipe as STDIN");
- if (repo)
- prepare_env(repo);
- execvp(filter->cmd, filter->argv);
- die("Unable to exec subprocess %s: %s (%d)", filter->cmd,
- strerror(errno), errno);
- }
- close(filter->pipe_fh[0]);
- chk_non_negative(dup2(filter->pipe_fh[1], STDOUT_FILENO),
- "Unable to use pipe as STDOUT");
- close(filter->pipe_fh[1]);
- return 0;
-}
-
-int cgit_close_filter(struct cgit_filter *filter)
-{
- chk_non_negative(dup2(filter->old_stdout, STDOUT_FILENO),
- "Unable to restore STDOUT");
- close(filter->old_stdout);
- if (filter->pid < 0)
- return 0;
- waitpid(filter->pid, &filter->exitstatus, 0);
- if (WIFEXITED(filter->exitstatus) && !WEXITSTATUS(filter->exitstatus))
- return 0;
- die("Subprocess %s exited abnormally", filter->cmd);
-}
-