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//===-- Spawn file actions -------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC_SPAWN_FILE_ACTIONS_H
#define LLVM_LIBC_SRC_SPAWN_FILE_ACTIONS_H
#include <spawn.h> // For mode_t
#include <stdint.h>
namespace LIBC_NAMESPACE {
struct BaseSpawnFileAction {
enum ActionType {
OPEN = 111,
CLOSE = 222,
DUP2 = 333,
};
ActionType type;
BaseSpawnFileAction *next;
static void add_action(posix_spawn_file_actions_t *actions,
BaseSpawnFileAction *act) {
if (actions->__back != nullptr) {
auto *back = reinterpret_cast<BaseSpawnFileAction *>(actions->__back);
back->next = act;
actions->__back = act;
} else {
// First action is being added.
actions->__front = actions->__back = act;
}
}
protected:
explicit BaseSpawnFileAction(ActionType t) : type(t), next(nullptr) {}
};
struct SpawnFileOpenAction : public BaseSpawnFileAction {
const char *path;
int fd;
int oflag;
mode_t mode;
SpawnFileOpenAction(const char *p, int fdesc, int flags, mode_t m)
: BaseSpawnFileAction(BaseSpawnFileAction::OPEN), path(p), fd(fdesc),
oflag(flags), mode(m) {}
};
struct SpawnFileCloseAction : public BaseSpawnFileAction {
int fd;
SpawnFileCloseAction(int fdesc)
: BaseSpawnFileAction(BaseSpawnFileAction::CLOSE), fd(fdesc) {}
};
struct SpawnFileDup2Action : public BaseSpawnFileAction {
int fd;
int newfd;
SpawnFileDup2Action(int fdesc, int new_fdesc)
: BaseSpawnFileAction(BaseSpawnFileAction::DUP2), fd(fdesc),
newfd(new_fdesc) {}
};
} // namespace LIBC_NAMESPACE
#endif // LLVM_LIBC_SRC_SPAWN_FILE_ACTIONS_H
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