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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <pthread.h>
#include "config.h"
#include "common/common.h"
#include "common/msg.h"
#include "common/msg_control.h"
#include "subprocess.h"
void mp_devnull(void *ctx, char *data, size_t size)
{
}
#if HAVE_POSIX_SPAWN
int mp_subprocess(char **args, struct mp_cancel *cancel, void *ctx,
subprocess_read_cb on_stdout, subprocess_read_cb on_stderr,
char **error)
{
struct mp_subprocess_opts opts = {
.exe = args[0],
.args = args,
.cancel = cancel,
};
opts.fds[opts.num_fds++] = (struct mp_subprocess_fd){
.fd = 0, // stdin
.src_fd = 0,
};
opts.fds[opts.num_fds++] = (struct mp_subprocess_fd){
.fd = 1, // stdout
.on_read = on_stdout,
.on_read_ctx = ctx,
.src_fd = on_stdout ? -1 : 1,
};
opts.fds[opts.num_fds++] = (struct mp_subprocess_fd){
.fd = 2, // stderr
.on_read = on_stderr,
.on_read_ctx = ctx,
.src_fd = on_stderr ? -1 : 2,
};
struct mp_subprocess_result res;
mp_subprocess2(&opts, &res);
if (res.error < 0) {
*error = (char *)mp_subprocess_err_str(res.error);
return res.error;
}
return res.exit_status;
}
#endif
struct subprocess_args {
struct mp_log *log;
char **args;
};
static void *run_subprocess(void *ptr)
{
struct subprocess_args *p = ptr;
pthread_detach(pthread_self());
mp_msg_flush_status_line(p->log);
char *err = NULL;
if (mp_subprocess(p->args, NULL, NULL, NULL, NULL, &err) < 0)
mp_err(p->log, "Running subprocess failed: %s\n", err);
talloc_free(p);
return NULL;
}
void mp_subprocess_detached(struct mp_log *log, char **args)
{
struct subprocess_args *p = talloc_zero(NULL, struct subprocess_args);
p->log = mp_log_new(p, log, NULL);
int num_args = 0;
for (int n = 0; args[n]; n++)
MP_TARRAY_APPEND(p, p->args, num_args, talloc_strdup(p, args[n]));
MP_TARRAY_APPEND(p, p->args, num_args, NULL);
pthread_t thread;
if (pthread_create(&thread, NULL, run_subprocess, p))
talloc_free(p);
}
const char *mp_subprocess_err_str(int num)
{
// Note: these are visible to the public client API
switch (num) {
case MP_SUBPROCESS_OK: return "success";
case MP_SUBPROCESS_EKILLED_BY_US: return "killed";
case MP_SUBPROCESS_EINIT: return "init";
case MP_SUBPROCESS_EUNSUPPORTED: return "unsupported";
case MP_SUBPROCESS_EGENERIC: // fall through
default: return "unknown";
}
}
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