If pipe_stdin exists, create a second pipe to write to the child
process's STDIN. This allows Petitboot to pipe information to a process,
for example piping a LUKS password to cryptsetup.
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
int stdout_buf_len;
struct waiter *stdout_waiter;
int stdout_pipe[2];
int stdout_buf_len;
struct waiter *stdout_waiter;
int stdout_pipe[2];
+static void process_setup_stdin_parent(struct process_info *procinfo)
+{
+ FILE *in;
+
+ if (!procinfo->process.pipe_stdin)
+ return;
+
+ close(procinfo->stdin_pipe[0]);
+ in = fdopen(procinfo->stdin_pipe[1], "w");
+ if (!in) {
+ pb_log_fn("Failed to open stdin\n");
+ return;
+ }
+ fputs(procinfo->process.pipe_stdin, in);
+ fflush(in);
+}
+
+static void process_setup_stdin_child(struct process_info *procinfo)
+{
+ if (procinfo->process.pipe_stdin) {
+ close(procinfo->stdin_pipe[1]);
+ dup2(procinfo->stdin_pipe[0], STDIN_FILENO);
+ }
+}
static void process_setup_stdout_parent(struct process_info *procinfo)
{
if (!procinfo->process.keep_stdout || procinfo->process.raw_stdout)
return;
close(procinfo->stdout_pipe[1]);
static void process_setup_stdout_parent(struct process_info *procinfo)
{
if (!procinfo->process.keep_stdout || procinfo->process.raw_stdout)
return;
close(procinfo->stdout_pipe[1]);
}
static void process_setup_stdout_child(struct process_info *procinfo)
}
static void process_setup_stdout_child(struct process_info *procinfo)
rc = process_setup_stdout_pipe(procinfo);
if (rc)
return rc;
rc = process_setup_stdout_pipe(procinfo);
if (rc)
return rc;
+ if (procinfo->process.pipe_stdin) {
+ rc = pipe(procinfo->stdin_pipe);
+ if (rc)
+ return rc;
+ }
pid = fork();
if (pid < 0) {
pid = fork();
if (pid < 0) {
if (pid == 0) {
process_setup_stdout_child(procinfo);
if (pid == 0) {
process_setup_stdout_child(procinfo);
+ process_setup_stdin_child(procinfo);
if (procset->dry_run)
exit(EXIT_SUCCESS);
execvp(process->path, (char * const *)process->argv);
if (procset->dry_run)
exit(EXIT_SUCCESS);
execvp(process->path, (char * const *)process->argv);
}
process_setup_stdout_parent(procinfo);
}
process_setup_stdout_parent(procinfo);
+ process_setup_stdin_parent(procinfo);
process->pid = pid;
return 0;
process->pid = pid;
return 0;
void *data;
waiter_cb stdout_cb;
void *stdout_data;
void *data;
waiter_cb stdout_cb;
void *stdout_data;
/* runtime data */
pid_t pid;
/* runtime data */
pid_t pid;