From acfd1a1929e9086f7a6bc3d2c05453a64be45f9a Mon Sep 17 00:00:00 2001 From: sfan5 Date: Thu, 3 Aug 2017 22:50:10 +0200 Subject: android: posix_spawn(p) replacement Signed-off-by: wm4 --- osdep/android/posix-spawn.c | 72 +++++++++++++++++++++++++++++++++++++++++++++ osdep/android/posix-spawn.h | 43 +++++++++++++++++++++++++++ 2 files changed, 115 insertions(+) create mode 100644 osdep/android/posix-spawn.c create mode 100644 osdep/android/posix-spawn.h (limited to 'osdep/android') diff --git a/osdep/android/posix-spawn.c b/osdep/android/posix-spawn.c new file mode 100644 index 0000000000..a9bb27a8d1 --- /dev/null +++ b/osdep/android/posix-spawn.c @@ -0,0 +1,72 @@ +/* + * posix-spawn replacement for Android + * + * 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 . + */ + +#include +#include +#include "osdep/android/posix-spawn.h" + +int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *fa, int fd, int newfd) +{ + if (fa->used >= MAX_FILE_ACTIONS) + return -1; + fa->action[fa->used].filedes = fd; + fa->action[fa->used].newfiledes = newfd; + fa->used++; + return 0; +} + +int posix_spawn_file_actions_init(posix_spawn_file_actions_t *fa) +{ + fa->used = 0; + return 0; +} + +int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *fa) +{ + return 0; +} + +int posix_spawnp(pid_t *pid, const char *file, + const posix_spawn_file_actions_t *fa, + const posix_spawnattr_t *attrp, + char *const argv[], char *const envp[]) +{ + pid_t p; + + if (attrp != NULL) + return EINVAL; + + p = fork(); + if (p == -1) + return errno; + + if (p == 0) { + for (int i = 0; i < fa->used; i++) { + int err = dup2(fa->action[i].filedes, fa->action[i].newfiledes); + if (err == -1) + goto fail; + } + execvpe(file, argv, envp); +fail: + _exit(127); + } + + *pid = p; + return 0; +} diff --git a/osdep/android/posix-spawn.h b/osdep/android/posix-spawn.h new file mode 100644 index 0000000000..d995b993ec --- /dev/null +++ b/osdep/android/posix-spawn.h @@ -0,0 +1,43 @@ +/* + * posix-spawn replacement for Android + * + * 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 . + */ + +#pragma once + +#include + +#define MAX_FILE_ACTIONS 4 + +typedef struct { + char dummy; +} posix_spawnattr_t; /* unsupported */ + +typedef struct { + int used; + struct { + int filedes, newfiledes; + } action[MAX_FILE_ACTIONS]; +} posix_spawn_file_actions_t; + +int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t*, int, int); +int posix_spawn_file_actions_init(posix_spawn_file_actions_t*); +int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t*); + +int posix_spawnp(pid_t*, const char*, + const posix_spawn_file_actions_t*, const posix_spawnattr_t *, + char *const [], char *const []); -- cgit v1.2.3