// nt-lite posix_spawn declarations.

#pragma once

#include <stdint.h>
#include <sys/types.h>
#include <signal.h>
#include <ntlite_posix_api.h>

#define POSIX_SPAWN_SETPGROUP  0x00000001u
#define POSIX_SPAWN_SETSIGMASK 0x00000002u
#define POSIX_SPAWN_SETSIGDEF  0x00000004u
#define POSIX_SPAWN_FILE_ACTION_CAPACITY 64u

#define NTL_POSIX_SPAWN_FILE_ACTION_NONE  0u
#define NTL_POSIX_SPAWN_FILE_ACTION_CLOSE 1u
#define NTL_POSIX_SPAWN_FILE_ACTION_DUP2  2u
#define NTL_POSIX_SPAWN_FILE_ACTION_OPEN  3u

typedef struct posix_spawn_file_action_entry {
    uint32_t Type;
    int FileDescriptor;
    int NewFileDescriptor;
    int OpenFlags;
    mode_t Mode;
    char* Path;
} posix_spawn_file_action_entry;

typedef struct posix_spawn_file_actions_t {
    uint32_t Initialized;
    uint32_t Count;
    posix_spawn_file_action_entry Entries[POSIX_SPAWN_FILE_ACTION_CAPACITY];
} posix_spawn_file_actions_t;

typedef struct posix_spawnattr_t {
    uint32_t Initialized;
    uint32_t Flags;
    pid_t ProcessGroup;
    sigset_t SignalMask;
    sigset_t SignalDefault;
} posix_spawnattr_t;

NTL_POSIX_API int posix_spawn_file_actions_init(posix_spawn_file_actions_t* actions);
NTL_POSIX_API int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t* actions);
NTL_POSIX_API int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t* actions, int fd);
NTL_POSIX_API int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t* actions,
                                                   int fd, int newFd);
NTL_POSIX_API int posix_spawn_file_actions_addopen(posix_spawn_file_actions_t* actions, int fd,
                                                   const char* path, int openFlags, mode_t mode);

NTL_POSIX_API int posix_spawnattr_init(posix_spawnattr_t* attributes);
NTL_POSIX_API int posix_spawnattr_destroy(posix_spawnattr_t* attributes);
NTL_POSIX_API int posix_spawnattr_getflags(const posix_spawnattr_t* attributes, short* flags);
NTL_POSIX_API int posix_spawnattr_setflags(posix_spawnattr_t* attributes, short flags);
NTL_POSIX_API int posix_spawnattr_getpgroup(const posix_spawnattr_t* attributes, pid_t* pgroup);
NTL_POSIX_API int posix_spawnattr_setpgroup(posix_spawnattr_t* attributes, pid_t pgroup);
NTL_POSIX_API int posix_spawnattr_getsigmask(const posix_spawnattr_t* attributes, sigset_t* mask);
NTL_POSIX_API int posix_spawnattr_setsigmask(posix_spawnattr_t* attributes, const sigset_t* mask);
NTL_POSIX_API int posix_spawnattr_getsigdefault(const posix_spawnattr_t* attributes, sigset_t* set);
NTL_POSIX_API int posix_spawnattr_setsigdefault(posix_spawnattr_t* attributes, const sigset_t* set);

NTL_POSIX_API int posix_spawn(pid_t* pid, const char* path,
                              const posix_spawn_file_actions_t* fileActions,
                              const posix_spawnattr_t* attributes,
                              char* const argv[], char* const envp[]);