#ifndef _UNISTD_H
#define _UNISTD_H

#include <mlibc-config.h>
#include <bits/types.h>
#include <bits/size_t.h>
#include <bits/ssize_t.h>
#include <bits/off_t.h>
#include <bits/types.h>
#include <abi-bits/access.h>
#include <abi-bits/uid_t.h>
#include <abi-bits/gid_t.h>
#include <abi-bits/pid_t.h>
#include <abi-bits/seek-whence.h>

#if __MLIBC_SYSDEP_HAS_BITS_SYSCALL_H && __MLIBC_LINUX_OPTION
#include <bits/syscall.h>
#endif /* __MLIBC_SYSDEP_HAS_BITS_SYSCALL_H && __MLIBC_LINUX_OPTION */

#ifdef __cplusplus
extern "C" {
#endif

#define _POSIX_VERSION 200809L
#define _POSIX2_VERSION _POSIX_VERSION
#define _XOPEN_VERSION 700

#define _POSIX_FSYNC _POSIX_VERSION
#define _POSIX_IPV6 _POSIX_VERSION
#define _POSIX_JOB_CONTROL 1
#define _POSIX_SAVED_IDS 1
#define _POSIX_SHELL 1
#define _POSIX_SPAWN _POSIX_VERSION
#define _POSIX_THREADS _POSIX_VERSION
#define _POSIX_THREAD_SAFE_FUNCTIONS _POSIX_VERSION
#define _POSIX_MONOTONIC_CLOCK 0

/* MISSING: additional _POSIX and _XOPEN feature macros */
/* MISSING: _POSIX_TIMESTAMP_RESOLUTION and _POSIX2_SYMLINKS */

#define _CS_PATH 0
#define _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS 1
#define _CS_GNU_LIBC_VERSION 2
#define _CS_GNU_LIBPTHREAD_VERSION 3
#define _CS_POSIX_V5_WIDTH_RESTRICTED_ENVS 4
#define _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS 5

#define _CS_POSIX_V6_ILP32_OFF32_CFLAGS 1116
#define _CS_POSIX_V6_ILP32_OFF32_LDFLAGS 1117
#define _CS_POSIX_V6_ILP32_OFF32_LIBS 1118
#define _CS_POSIX_V6_ILP32_OFF32_LINTFLAGS 1119
#define _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS 1120
#define _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS 1121
#define _CS_POSIX_V6_ILP32_OFFBIG_LIBS 1122
#define _CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS 1123
#define _CS_POSIX_V6_LP64_OFF64_CFLAGS 1124
#define _CS_POSIX_V6_LP64_OFF64_LDFLAGS 1125
#define _CS_POSIX_V6_LP64_OFF64_LIBS 1126
#define _CS_POSIX_V6_LP64_OFF64_LINTFLAGS 1127
#define _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS 1128
#define _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS 1129
#define _CS_POSIX_V6_LPBIG_OFFBIG_LIBS 1130
#define _CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS 1131
#define _CS_POSIX_V7_ILP32_OFF32_CFLAGS 1132
#define _CS_POSIX_V7_ILP32_OFF32_LDFLAGS 1133
#define _CS_POSIX_V7_ILP32_OFF32_LIBS 1134
#define _CS_POSIX_V7_ILP32_OFF32_LINTFLAGS 1135
#define _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS 1136
#define _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS 1137
#define _CS_POSIX_V7_ILP32_OFFBIG_LIBS 1138
#define _CS_POSIX_V7_ILP32_OFFBIG_LINTFLAGS 1139
#define _CS_POSIX_V7_LP64_OFF64_CFLAGS 1140
#define _CS_POSIX_V7_LP64_OFF64_LDFLAGS 1141
#define _CS_POSIX_V7_LP64_OFF64_LIBS 1142
#define _CS_POSIX_V7_LP64_OFF64_LINTFLAGS 1143
#define _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS 1144
#define _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS 1145
#define _CS_POSIX_V7_LPBIG_OFFBIG_LIBS 1146
#define _CS_POSIX_V7_LPBIG_OFFBIG_LINTFLAGS 1147
#define _CS_V6_ENV 1148
#define _CS_V7_ENV 1149

/* MISSING: SEEK macros from stdio.h */

#define F_LOCK 1
#define F_TEST 2
#define F_TLOCK 3
#define F_ULOCK 4

/* MISSING: _PC macros */
/* For now, use the Linux ABI for _PC constants. */
#define _PC_LINK_MAX		0
#define _PC_MAX_CANON		1
#define _PC_MAX_INPUT		2
#define _PC_NAME_MAX		3
#define _PC_PATH_MAX		4
#define _PC_PIPE_BUF		5
#define _PC_CHOWN_RESTRICTED	6
#define _PC_NO_TRUNC		7
#define _PC_VDISABLE		8

#define _PC_FILESIZEBITS 9
#define _PC_SYMLINK_MAX 10

/* MISSING: remaining _SC_macros */
#define _SC_ARG_MAX 0
#define _SC_CHILD_MAX 1
#define _SC_CLK_TCK 2
#define _SC_NGROUPS_MAX 3
#define _SC_OPEN_MAX 4
#define _SC_STREAM_MAX 5
#define _SC_TZNAME_MAX 6
#define _SC_JOB_CONTROL 7

#define _SC_SAVED_IDS 8
#define _SC_REALTIME_SIGNALS 9
#define _SC_PRIORITY_SCHEDULING 10
#define _SC_TIMERS 11
#define _SC_ASYNCHRONOUS_IO 12
#define _SC_PRIORITIZED_IO 13
#define _SC_SYNCHRONIZED_IO 14
#define _SC_FSYNC 15
#define _SC_MAPPED_FILES 16
#define _SC_MEMLOCK 17
#define _SC_MEMLOCK_RANGE 18
#define _SC_MEMORY_PROTECTION 19
#define _SC_MESSAGE_PASSING 20
#define _SC_SEMAPHORES 21
#define _SC_SHARED_MEMORY_OBJECTS 22
#define _SC_AIO_LISTIO_MAX 23
#define _SC_AIO_MAX 24
#define _SC_AIO_PRIO_DELTA_MAX 25
#define _SC_DELAYTIMER_MAX 26
#define _SC_MQ_OPEN_MAX 27
#define _SC_MQ_PRIO_MAX 28
#define _SC_VERSION 29
#define _SC_PAGE_SIZE 30
#define _SC_PAGESIZE _SC_PAGE_SIZE
#define _SC_RTSIG_MAX 31
#define _SC_SEM_NSEMS_MAX 32
#define _SC_SEM_VALUE_MAX 33
#define _SC_SIGQUEUE_MAX 34
#define _SC_TIMER_MAX 35
#define _SC_BC_BASE_MAX 36
#define _SC_BC_DIM_MAX 37
#define _SC_BC_SCALE_MAX 38
#define _SC_BC_STRING_MAX 39
#define _SC_COLL_WEIGHTS_MAX 40
#define _SC_EXPR_NEST_MAX 42
#define _SC_LINE_MAX 43
#define _SC_RE_DUP_MAX 44
#define _SC_2_VERSION 46
#define _SC_2_C_BIND 47
#define _SC_2_C_DEV 48
#define _SC_2_FORT_DEV 49
#define _SC_2_FORT_RUN 50
#define _SC_2_SW_DEV 51
#define _SC_2_LOCALEDEF 52
#define _SC_IOV_MAX 60
#define _SC_UIO_MAXIOV _SC_IOV_MAX
#define _SC_THREADS 67
#define _SC_THREAD_SAFE_FUNCTIONS 68
#define _SC_GETGR_R_SIZE_MAX 69
#define _SC_GETPW_R_SIZE_MAX 70
#define _SC_LOGIN_NAME_MAX 71
#define _SC_TTY_NAME_MAX 72
#define _SC_THREAD_DESTRUCTOR_ITERATIONS 73
#define _SC_THREAD_KEYS_MAX 74
#define _SC_THREAD_STACK_MIN 75
#define _SC_THREAD_THREADS_MAX 76
#define _SC_THREAD_ATTR_STACKADDR 77
#define _SC_THREAD_ATTR_STACKSIZE 78
#define _SC_THREAD_PRIORITY_SCHEDULING 79
#define _SC_THREAD_PRIO_INHERIT 80
#define _SC_THREAD_PRIO_PROTECT 81
#define _SC_THREAD_PROCESS_SHARED 82
#define _SC_NPROCESSORS_CONF 83
#define _SC_NPROCESSORS_ONLN 84
#define _SC_PHYS_PAGES 85
#define _SC_AVPHYS_PAGES 86
#define _SC_ATEXIT_MAX 87
#define _SC_PASS_MAX 88
#define _SC_XOPEN_VERSION 89
#define _SC_XOPEN_XCU_VERSION 90
#define _SC_XOPEN_UNIX 91
#define _SC_XOPEN_CRYPT 92
#define _SC_XOPEN_ENH_I18N 93
#define _SC_XOPEN_SHM 94
#define _SC_2_CHAR_TERM 95
#define _SC_2_UPE 97
#define _SC_XOPEN_XPG2 98
#define _SC_XOPEN_XPG3 99
#define _SC_XOPEN_XPG4 100
#define _SC_NZERO 109
#define _SC_XBS5_ILP32_OFF32 125
#define _SC_XBS5_ILP32_OFFBIG 126
#define _SC_XBS5_LP64_OFF64 127
#define _SC_XBS5_LPBIG_OFFBIG 128
#define _SC_XOPEN_LEGACY 129
#define _SC_XOPEN_REALTIME 130
#define _SC_XOPEN_REALTIME_THREADS 131
#define _SC_ADVISORY_INFO 132
#define _SC_BARRIERS 133
#define _SC_CLOCK_SELECTION 137
#define _SC_CPUTIME 138
#define _SC_THREAD_CPUTIME 139
#define _SC_MONOTONIC_CLOCK 149
#define _SC_READER_WRITER_LOCKS 153
#define _SC_SPIN_LOCKS 154
#define _SC_REGEXP 155
#define _SC_SHELL 157
#define _SC_SPAWN 159
#define _SC_SPORADIC_SERVER 160
#define _SC_THREAD_SPORADIC_SERVER 161
#define _SC_TIMEOUTS 164
#define _SC_TYPED_MEMORY_OBJECTS 165
#define _SC_2_PBS 168
#define _SC_2_PBS_ACCOUNTING 169
#define _SC_2_PBS_LOCATE 170
#define _SC_2_PBS_MESSAGE 171
#define _SC_2_PBS_TRACK 172
#define _SC_SYMLOOP_MAX 173
#define _SC_STREAMS 174
#define _SC_2_PBS_CHECKPOINT 175
#define _SC_V6_ILP32_OFF32 176
#define _SC_V6_ILP32_OFFBIG 177
#define _SC_V6_LP64_OFF64 178
#define _SC_V6_LPBIG_OFFBIG 179
#define _SC_HOST_NAME_MAX 180
#define _SC_TRACE 181
#define _SC_TRACE_EVENT_FILTER 182
#define _SC_TRACE_INHERIT 183
#define _SC_TRACE_LOG 184

/* Port-specific _SC_* define values */

#if defined (__ironclad__)
#define _SC_TOTAL_PAGES 1000
#define _SC_HOST_OPEN_MAX 1001
#endif /* defined (__ironclad__) */

#define STDERR_FILENO 2
#define STDIN_FILENO 0
#define STDOUT_FILENO 1

#define _POSIX_VDISABLE '\0'

#define L_ctermid 20

/*
 * Solving this likely requires us to 'factor out' the typedef into a new
 * header file, or use a mechanism like musl's __NEED_intptr_t.
 */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpedantic"
typedef __mlibc_intptr intptr_t;
#pragma GCC diagnostic pop

#ifndef __MLIBC_ABI_ONLY

int access(const char *__path, int __mode);
unsigned int alarm(unsigned int __seconds);
int chdir(const char *__path);
int chown(const char *__path, uid_t __uid, gid_t __gid);
int close(int __fd);
size_t confstr(int __name, char *__buf, size_t __size);
char *ctermid(char *__s);
int dup(int __fd);
int dup2(int __src_fd, int __dest_fd);
__attribute__((__noreturn__)) void _exit(int __status);
void endusershell(void);
int execl(const char *__path, const char *__arg, ...);
int execle(const char *__path, const char *__arg, ...);
int execlp(const char *__file, const char *__arg, ...);
int execv(const char *__path, char *const __argv[]);
int execve(const char *__path, char *const __argv[], char *const __envp[]);
int execvp(const char *__file, char *const __argv[]);
int execvpe(const char *__path, char *const __argv[], char *const __envp[]);
int faccessat(int __fd, const char *__path, int __mode, int __flags);
int fchdir(int __fd);
int fchown(int __fd, uid_t __uid, gid_t __gid);
int fchownat(int __fd, const char *__path, uid_t __uid, gid_t __gid, int __flags);
int fdatasync(int __fd);
int fexecve(int __fd, char *const __argv[], char *const __envp[]);
pid_t fork(void);
pid_t vfork(void);
long fpathconf(int __fd, int __name);
int fsync(int __fd);
int ftruncate(int __fd, off_t __size);
int ftruncate64(int __fd, off64_t __size);
char *getcwd(char *__buffer, size_t __size);
gid_t getegid(void);
uid_t geteuid(void);
gid_t getgid(void);
int getgroups(int __size, gid_t __list[]);
long gethostid(void);
int gethostname(char *__buffer, size_t __max_length);
int sethostname(const char *__buffer, size_t __max_length);
char *getlogin(void);
int getlogin_r(char *__buffer, size_t __size);
int getopt(int __argc, char *const __argv[], const char *__optstring);
char *getpass(const char *__prompt);
pid_t getpgid(pid_t __pid);
pid_t getpgrp(void);
pid_t getpid(void);
pid_t getppid(void);
pid_t getsid(pid_t __pid);
uid_t getuid(void);
char *getusershell(void);
int isatty(int __fd);
int lchown(const char *__path, uid_t __uid, gid_t __gid);
int link(const char *__oldpath, const char *__newpath);
int linkat(int __olddirfd, const char *__oldpath, int __newdirfd, const char *__newpath, int __flags);
int lockf(int __fd, int __op, off_t __size);
off_t lseek(int __fd, off_t __offset, int __whence);
off64_t lseek64(int __fd, off64_t __offset, int __whence);
int nice(int __increment);
long pathconf(const char *__path, int __name);
int pause(void);
int pipe(int __pipefd[2]);
ssize_t pread(int __fd, void *__buf, size_t __size, off_t __offset);
ssize_t pread64(int __fd, void *__buf, size_t __size, off_t __offset);
ssize_t pwrite(int __fd, const void *__buf, size_t __size, off_t __offset);
ssize_t pwrite64(int __fd, const void *__buf, size_t __size, off_t __offset);
ssize_t read(int fd, void *buffer, size_t size);
ssize_t readlink(const char *__restrict __path, char *__restrict __buf, size_t __size);
ssize_t readlinkat(int __dirfd, const char *__restrict __path, char *__restrict __buf, size_t __size);
int rmdir(const char *__path);
int setegid(gid_t __egid);
int seteuid(uid_t __euid);
int setgid(gid_t __gid);
int setpgid(pid_t __pid, pid_t __pgid);
pid_t setpgrp(void);
int setregid(gid_t __rgid, gid_t __egid);
int setreuid(uid_t __ruid, uid_t __euid);
pid_t setsid(void);
int setuid(uid_t __uid);
void setusershell(void);
unsigned int sleep(unsigned int __seconds);
void swab(const void *__restrict __from, void *__restrict __to, ssize_t __size);
int symlink(const char *__target, const char *__linkpath);
int symlinkat(const char *__target, int __newdirfd, const char *__linkpath);
void sync(void);
long sysconf(int __name);
pid_t tcgetpgrp(int __fd);
int tcsetpgrp(int __fd, pid_t __pgrp);
int truncate(const char *__path, off_t __size);
int truncate64(const char *__path, off64_t __size);
char *ttyname(int __fd);
int ttyname_r(int __fd, char *__buf, size_t __size);
int unlink(const char *__path);
int unlinkat(int __dirfd, const char *__path, int __flags);
ssize_t write(int __fd, const void *__buffer, size_t __size);

extern char **environ;
extern char *optarg;
extern int optind;
extern int opterr;
extern int optopt;

#endif /* !__MLIBC_ABI_ONLY */

/* Non-POSIX functions supported by Linux. */
#if UINTPTR_MAX == UINT64_MAX
typedef __mlibc_uint64 useconds_t;
#else
typedef __mlibc_uint32 useconds_t;
#endif

#ifndef __MLIBC_ABI_ONLY

int getpagesize(void);
char *get_current_dir_name(void);
int usleep(useconds_t __usec);
int chroot(const char *__path);
int daemon(int __nochdir, int __noclose);

/* This is a Linux extension */
pid_t gettid(void);
int getentropy(void *__buffer, size_t __size);

int pipe2(int *__pipefd, int __flags);

int setresuid(uid_t __ruid, uid_t __euid, uid_t __suid);
int setresgid(gid_t __rgid, gid_t __egid, gid_t __sgid);

/* Glibc extensions. */
int getdomainname(char *__name, size_t __len);
int setdomainname(const char *__name, size_t __len);

int getresuid(uid_t *__ruid, uid_t *__euid, uid_t *__suid);
int getresgid(gid_t *__rgid, gid_t *__egid, gid_t *__sgid);

#endif /* !__MLIBC_ABI_ONLY */

#ifdef __cplusplus
}
#endif

#if __MLIBC_LINUX_OPTION
#	include <bits/linux/linux_unistd.h>
#endif

#if __MLIBC_BSD_OPTION
#	include <bits/bsd/bsd_unistd.h>
#endif

#endif /* _UNISTD_H */