Add a "fork" of musl as //fusl.

fusl/include/unistd.h

+#ifndef _UNISTD_H
+#define _UNISTD_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <features.h>
+
+#define STDIN_FILENO  0
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+
+#define SEEK_SET 0
+#define SEEK_CUR 1
+#define SEEK_END 2
+
+#ifdef __cplusplus
+#define NULL 0L
+#else
+#define NULL ((void*)0)
+#endif
+
+#define __NEED_size_t
+#define __NEED_ssize_t
+#define __NEED_uid_t
+#define __NEED_gid_t
+#define __NEED_off_t
+#define __NEED_pid_t
+#define __NEED_intptr_t
+#define __NEED_useconds_t
+
+#include <bits/alltypes.h>
+
+int pipe(int [2]);
+int pipe2(int [2], int);
+int close(int);
+int posix_close(int, int);
+int dup(int);
+int dup2(int, int);
+int dup3(int, int, int);
+off_t lseek(int, off_t, int);
+int fsync(int);
+int fdatasync(int);
+
+ssize_t read(int, void *, size_t);
+ssize_t write(int, const void *, size_t);
+ssize_t pread(int, void *, size_t, off_t);
+ssize_t pwrite(int, const void *, size_t, off_t);
+
+int chown(const char *, uid_t, gid_t);
+int fchown(int, uid_t, gid_t);
+int lchown(const char *, uid_t, gid_t);
+int fchownat(int, const char *, uid_t, gid_t, int);
+
+int link(const char *, const char *);
+int linkat(int, const char *, int, const char *, int);
+int symlink(const char *, const char *);
+int symlinkat(const char *, int, const char *);
+ssize_t readlink(const char *__restrict, char *__restrict, size_t);
+ssize_t readlinkat(int, const char *__restrict, char *__restrict, size_t);
+int unlink(const char *);
+int unlinkat(int, const char *, int);
+int rmdir(const char *);
+int truncate(const char *, off_t);
+int ftruncate(int, off_t);
+
+#define F_OK 0
+#define R_OK 4
+#define W_OK 2
+#define X_OK 1
+
+int access(const char *, int);
+int faccessat(int, const char *, int, int);
+
+int chdir(const char *);
+int fchdir(int);
+char *getcwd(char *, size_t);
+
+unsigned alarm(unsigned);
+unsigned sleep(unsigned);
+int pause(void);
+
+pid_t fork(void);
+int execve(const char *, char *const [], char *const []);
+int execv(const char *, char *const []);
+int execle(const char *, const char *, ...);
+int execl(const char *, const char *, ...);
+int execvp(const char *, char *const []);
+int execlp(const char *, const char *, ...);
+int fexecve(int, char *const [], char *const []);
+_Noreturn void _exit(int);
+
+pid_t getpid(void);
+pid_t getppid(void);
+pid_t getpgrp(void);
+pid_t getpgid(pid_t);
+int setpgid(pid_t, pid_t);
+pid_t setsid(void);
+pid_t getsid(pid_t);
+char *ttyname(int);
+int ttyname_r(int, char *, size_t);
+int isatty(int);
+pid_t tcgetpgrp(int);
+int tcsetpgrp(int, pid_t);
+
+uid_t getuid(void);
+uid_t geteuid(void);
+gid_t getgid(void);
+gid_t getegid(void);
+int getgroups(int, gid_t []);
+int setuid(uid_t);
+int setreuid(uid_t, uid_t);
+int seteuid(uid_t);
+int setgid(gid_t);
+int setregid(gid_t, gid_t);
+int setegid(gid_t);
+
+char *getlogin(void);
+int getlogin_r(char *, size_t);
+int gethostname(char *, size_t);
+char *ctermid(char *);
+
+int getopt(int, char * const [], const char *);
+extern char *optarg;
+extern int optind, opterr, optopt;
+
+long pathconf(const char *, int);
+long fpathconf(int, int);
+long sysconf(int);
+size_t confstr(int, char *, size_t);
+
+#define F_ULOCK 0
+#define F_LOCK  1
+#define F_TLOCK 2
+#define F_TEST  3
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+int lockf(int, int, off_t);
+long gethostid(void);
+int nice(int);
+void sync(void);
+pid_t setpgrp(void);
+char *crypt(const char *, const char *);
+void encrypt(char *, int);
+void swab(const void *__restrict, void *__restrict, ssize_t);
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
+ || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
+int usleep(unsigned);
+unsigned ualarm(unsigned, unsigned);
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define L_SET 0
+#define L_INCR 1
+#define L_XTND 2
+int brk(void *);
+void *sbrk(intptr_t);
+pid_t vfork(void);
+int vhangup(void);
+int chroot(const char *);
+int getpagesize(void);
+int getdtablesize(void);
+int sethostname(const char *, size_t);
+int getdomainname(char *, size_t);
+int setdomainname(const char *, size_t);
+int setgroups(size_t, const gid_t *);
+char *getpass(const char *);
+int daemon(int, int);
+void setusershell(void);
+void endusershell(void);
+char *getusershell(void);
+int acct(const char *);
+long syscall(long, ...);
+int execvpe(const char *, char *const [], char *const []);
+int issetugid(void);
+#endif
+
+#ifdef _GNU_SOURCE
+extern char **environ;
+int setresuid(uid_t, uid_t, uid_t);
+int setresgid(gid_t, gid_t, gid_t);
+int getresuid(uid_t *, uid_t *, uid_t *);
+int getresgid(gid_t *, gid_t *, gid_t *);
+char *get_current_dir_name(void);
+int syncfs(int);
+int euidaccess(const char *, int);
+int eaccess(const char *, int);
+#endif
+
+#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
+#define lseek64 lseek
+#define pread64 pread
+#define pwrite64 pwrite
+#define truncate64 truncate
+#define ftruncate64 ftruncate
+#define lockf64 lockf
+#define off64_t off_t
+#endif
+
+#define POSIX_CLOSE_RESTART     0
+
+#define _XOPEN_VERSION          700
+#define _XOPEN_UNIX             1
+#define _XOPEN_ENH_I18N         1
+
+#define _POSIX_VERSION          200809L
+#define _POSIX2_VERSION         _POSIX_VERSION
+
+#define _POSIX_ADVISORY_INFO    _POSIX_VERSION
+#define _POSIX_CHOWN_RESTRICTED 1
+#define _POSIX_IPV6             _POSIX_VERSION
+#define _POSIX_JOB_CONTROL      1
+#define _POSIX_MAPPED_FILES     _POSIX_VERSION
+#define _POSIX_MEMLOCK          _POSIX_VERSION
+#define _POSIX_MEMLOCK_RANGE    _POSIX_VERSION
+#define _POSIX_MEMORY_PROTECTION _POSIX_VERSION
+#define _POSIX_MESSAGE_PASSING  _POSIX_VERSION
+#define _POSIX_FSYNC            _POSIX_VERSION
+#define _POSIX_NO_TRUNC         1
+#define _POSIX_RAW_SOCKETS      _POSIX_VERSION
+#define _POSIX_REALTIME_SIGNALS _POSIX_VERSION
+#define _POSIX_REGEXP           1
+#define _POSIX_SAVED_IDS        1
+#define _POSIX_SHELL            1
+#define _POSIX_SPAWN            _POSIX_VERSION
+#define _POSIX_VDISABLE         0
+
+#define _POSIX_THREADS          _POSIX_VERSION
+#define _POSIX_THREAD_PROCESS_SHARED _POSIX_VERSION
+#define _POSIX_THREAD_SAFE_FUNCTIONS _POSIX_VERSION
+#define _POSIX_THREAD_ATTR_STACKADDR _POSIX_VERSION
+#define _POSIX_THREAD_ATTR_STACKSIZE _POSIX_VERSION
+#define _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_VERSION
+#define _POSIX_THREAD_CPUTIME   _POSIX_VERSION
+#define _POSIX_TIMERS           _POSIX_VERSION
+#define _POSIX_TIMEOUTS         _POSIX_VERSION
+#define _POSIX_MONOTONIC_CLOCK  _POSIX_VERSION
+#define _POSIX_CPUTIME          _POSIX_VERSION
+#define _POSIX_CLOCK_SELECTION  _POSIX_VERSION
+#define _POSIX_BARRIERS         _POSIX_VERSION
+#define _POSIX_SPIN_LOCKS       _POSIX_VERSION
+#define _POSIX_READER_WRITER_LOCKS _POSIX_VERSION
+#define _POSIX_ASYNCHRONOUS_IO  _POSIX_VERSION
+#define _POSIX_SEMAPHORES       _POSIX_VERSION
+#define _POSIX_SHARED_MEMORY_OBJECTS _POSIX_VERSION
+
+#define _POSIX2_C_BIND          _POSIX_VERSION
+
+#include <bits/posix.h>
+
+
+
+#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_SYNC_IO     9
+#define _PC_ASYNC_IO    10
+#define _PC_PRIO_IO     11
+#define _PC_SOCK_MAXBUF 12
+#define _PC_FILESIZEBITS        13
+#define _PC_REC_INCR_XFER_SIZE  14
+#define _PC_REC_MAX_XFER_SIZE   15
+#define _PC_REC_MIN_XFER_SIZE   16
+#define _PC_REC_XFER_ALIGN      17
+#define _PC_ALLOC_SIZE_MIN      18
+#define _PC_SYMLINK_MAX 19
+#define _PC_2_SYMLINKS  20
+
+#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    30 /* !! */
+#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_UIO_MAXIOV  60 /* !! */
+#define _SC_IOV_MAX     60
+#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
+
+#define _SC_IPV6        235
+#define _SC_RAW_SOCKETS 236
+#define _SC_V7_ILP32_OFF32      237
+#define _SC_V7_ILP32_OFFBIG     238
+#define _SC_V7_LP64_OFF64       239
+#define _SC_V7_LPBIG_OFFBIG     240
+#define _SC_SS_REPL_MAX 241
+#define _SC_TRACE_EVENT_NAME_MAX        242
+#define _SC_TRACE_NAME_MAX      243
+#define _SC_TRACE_SYS_MAX       244
+#define _SC_TRACE_USER_EVENT_MAX        245
+#define _SC_XOPEN_STREAMS       246
+#define _SC_THREAD_ROBUST_PRIO_INHERIT  247
+#define _SC_THREAD_ROBUST_PRIO_PROTECT  248
+
+#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
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif