* include/unistd.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_UNISTD_H
#define __INCLUDE_UNISTD_H
* Included Files
****************************************************************************/
#include <sys/types.h>
#include <limits.h>
#include <nuttx/compiler.h>
#include <nuttx/tls.h>
* Pre-processor Definitions
****************************************************************************/
#define F_OK 0
#define X_OK 1
#define W_OK 2
#define R_OK 4
#define POSIX_VERSION
#undef _POSIX_SAVED_IDS
#undef _POSIX_JOB_CONTROL
#define _POSIX_MESSAGE_PASSING 200112L
#define _POSIX_PRIORITY_SCHEDULING 1
#ifndef CONFIG_DISABLE_POSIX_TIMERS
# define _POSIX_TIMERS 200112L
#endif
#if !defined(CONFIG_DISABLE_MQUEUE) && !defined(CONFIG_DISABLE_PTHREAD)
# define _POSIX_TIMEOUTS 1
#endif
#define _POSIX_MEMLOCK 200112L
#define _POSIX_MEMLOCK_RANGE 200112L
#define _POSIX_FSYNC 200112L
#define _POSIX_SYNCHRONIZED_IO 200112L
#ifdef CONFIG_LIBC_PASSWD_LINESIZE
# define _POSIX_GETPW_R_SIZE_MAX CONFIG_LIBC_PASSWD_LINESIZE
#endif
#define _POSIX_VERSION 201712L
#define _POSIX_PRIORITIZED_IO _POSIX_VERSION
#define _POSIX_CPUTIME _POSIX_VERSION
#define _POSIX_THREAD_CPUTIME _POSIX_VERSION
#define _POSIX_REALTIME_SIGNALS _POSIX_VERSION
#define _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_VERSION
#define _POSIX_SEMAPHORES _POSIX_VERSION
#define _POSIX_SHARED_MEMORY_OBJECTS _POSIX_VERSION
#define _POSIX_THREAD_PROCESS_SHARED _POSIX_VERSION
#define _POSIX_MAPPED_FILES _POSIX_VERSION
#define _POSIX_THREADS _POSIX_VERSION
#define _POSIX_THREAD_ATTR_STACKADDR 200112L
#define _POSIX_THREAD_ATTR_STACKSIZE 200112L
#define _POSIX_THREAD_PRIO_INHERIT 200112L
#define _POSIX_THREAD_PRIO_PROTECT 200112L
#define _POSIX_THREAD_SAFE_FUNCTIONS 200112L
#ifdef CONFIG_FS_AIO
# define _POSIX_ASYNCHRONOUS_IO _POSIX_VERSION
#else
# undef _POSIX_ASYNCHRONOUS_IO
#endif
#ifdef CONFIG_SCHED_SPORADIC
# define _POSIX_SPORADIC_SERVER 1
# define _POSIX_THREAD_SPORADIC_SERVER 1
#else
# define _POSIX_SPORADIC_SERVER -1
# define _POSIX_THREAD_SPORADIC_SERVER -1
#endif
#define _POSIX_CHOWN_RESTRICTED 1
#define _POSIX_NO_TRUNC 1
#undef _POSIX_VDISABLE
#define _POSIX_SYNC_IO 1
#define _POSIX_ASYNC_IO 1
#define _POSIX_PRIO_IO -1
#define _XOPEN_UNIX 1
#define _XOPEN_VERSION 700L
* errno to ENOSYS for most of these.
*/
#define _PC_2_SYMLINKS 0x0001
#define _PC_ALLOC_SIZE_MIN 0x0002
#define _PC_ASYNC_IO 0x0003
#define _PC_CHOWN_RESTRICTED 0x0004
#define _PC_FILESIZEBITS 0x0005
#define _PC_LINK_MAX 0x0006
#define _PC_MAX_CANON 0x0007
#define _PC_MAX_INPUT 0x0008
#define _PC_NAME_MAX 0x0009
#define _PC_NO_TRUNC 0x000a
#define _PC_PATH_MAX 0x000b
#define _PC_PIPE_BUF 0x000c
#define _PC_PRIO_IO 0x000d
#define _PC_REC_INCR_XFER_SIZE 0x000e
#define _PC_REC_MIN_XFER_SIZE 0x000f
#define _PC_REC_XFER_ALIGN 0x0010
#define _PC_SYMLINK_MAX 0x0011
#define _PC_SYNC_IO 0x0012
#define _PC_VDISABLE 0x0013
#define _PC_REC_MAX_XFER_SIZE 0x0014
* errno to ENOSYS for most of these.
*/
#define _SC_2_C_BIND 0x0001
#define _SC_2_C_DEV 0x0002
#define _SC_2_CHAR_TERM 0x0003
#define _SC_2_FORT_DEV 0x0004
#define _SC_2_FORT_RUN 0x0005
#define _SC_2_LOCALEDEF 0x0006
#define _SC_2_PBS 0x0007
#define _SC_2_PBS_ACCOUNTING 0x0008
#define _SC_2_PBS_CHECKPOINT 0x0009
#define _SC_2_PBS_LOCATE 0x000a
#define _SC_2_PBS_MESSAGE 0x000b
#define _SC_2_PBS_TRACK 0x000c
#define _SC_2_SW_DEV 0x000d
#define _SC_2_UPE 0x000e
#define _SC_2_VERSION 0x000f
#define _SC_ADVISORY_INFO 0x0010
#define _SC_AIO_LISTIO_MAX 0x0011
#define _SC_AIO_MAX 0x0012
#define _SC_AIO_PRIO_DELTA_MAX 0x0013
#define _SC_ARG_MAX 0x0014
#define _SC_ASYNCHRONOUS_IO 0x0015
#define _SC_ATEXIT_MAX 0x0016
#define _SC_BARRIERS 0x0017
#define _SC_BC_BASE_MAX 0x0018
#define _SC_BC_DIM_MAX 0x0019
#define _SC_BC_SCALE_MAX 0x001a
#define _SC_BC_STRING_MAX 0x001b
#define _SC_CHILD_MAX 0x001c
#define _SC_CLK_TCK 0x001d
#define _SC_CLOCK_SELECTION 0x001e
#define _SC_COLL_WEIGHTS_MAX 0x001f
#define _SC_CPUTIME 0x0020
#define _SC_DELAYTIMER_MAX 0x0021
#define _SC_EXPR_NEST_MAX 0x0022
#define _SC_FSYNC 0x0023
#define _SC_GETGR_R_SIZE_MAX 0x0024
#define _SC_GETPW_R_SIZE_MAX 0x0025
#define _SC_HOST_NAME_MAX 0x0026
#define _SC_IOV_MAX 0x0027
#define _SC_IPV6 0x0028
#define _SC_JOB_CONTROL 0x0029
#define _SC_LINE_MAX 0x002a
#define _SC_LOGIN_NAME_MAX 0x002b
#define _SC_MAPPED_FILES 0x002c
#define _SC_MEMLOCK 0x002d
#define _SC_MEMLOCK_RANGE 0x002e
#define _SC_MEMORY_PROTECTION 0x002f
#define _SC_MESSAGE_PASSING 0x0030
#define _SC_MONOTONIC_CLOCK 0x0031
#define _SC_MQ_OPEN_MAX 0x0032
#define _SC_MQ_PRIO_MAX 0x0033
#define _SC_NGROUPS_MAX 0x0034
#define _SC_OPEN_MAX 0x0035
#define _SC_PAGE_SIZE 0x0036
#define _SC_PAGESIZE _SC_PAGE_SIZE
#define _SC_PRIORITIZED_IO 0x0037
#define _SC_PRIORITY_SCHEDULING 0x0038
#define _SC_RAW_SOCKETS 0x0039
#define _SC_RE_DUP_MAX 0x003a
#define _SC_READER_WRITER_LOCKS 0x003b
#define _SC_REALTIME_SIGNALS 0x003c
#define _SC_REGEXP 0x003d
#define _SC_RTSIG_MAX 0x003e
#define _SC_SAVED_IDS 0x003f
#define _SC_SEM_NSEMS_MAX 0x0040
#define _SC_SEM_VALUE_MAX 0x0041
#define _SC_SEMAPHORES 0x0042
#define _SC_SHARED_MEMORY_OBJECTS 0x0043
#define _SC_SHELL 0x0044
#define _SC_SIGQUEUE_MAX 0x0045
#define _SC_SPAWN 0x0046
#define _SC_SPIN_LOCKS 0x0047
#define _SC_SPORADIC_SERVER 0x0048
#define _SC_SS_REPL_MAX 0x0049
#define _SC_STREAM_MAX 0x004a
#define _SC_SYMLOOP_MAX 0x004b
#define _SC_SYNCHRONIZED_IO 0x004c
#define _SC_THREAD_ATTR_STACKADDR 0x004d
#define _SC_THREAD_ATTR_STACKSIZE 0x004e
#define _SC_THREAD_CPUTIME 0x004f
#define _SC_THREAD_DESTRUCTOR_ITERATIONS 0x0050
#define _SC_THREAD_KEYS_MAX 0x0051
#define _SC_THREAD_PRIO_INHERIT 0x0052
#define _SC_THREAD_PRIO_PROTECT 0x0053
#define _SC_THREAD_PRIORITY_SCHEDULING 0x0054
#define _SC_THREAD_PROCESS_SHARED 0x0055
#define _SC_THREAD_SAFE_FUNCTIONS 0x0056
#define _SC_THREAD_SPORADIC_SERVER 0x0057
#define _SC_THREAD_STACK_MIN 0x0058
#define _SC_THREAD_THREADS_MAX 0x0059
#define _SC_THREADS 0x005a
#define _SC_TIMEOUTS 0x005b
#define _SC_TIMER_MAX 0x005c
#define _SC_TIMERS 0x005d
#define _SC_TRACE 0x005e
#define _SC_TRACE_EVENT_FILTER 0x005f
#define _SC_TRACE_EVENT_NAME_MAX 0x0060
#define _SC_TRACE_INHERIT 0x0061
#define _SC_TRACE_LOG 0x0062
#define _SC_TRACE_NAME_MAX 0x0063
#define _SC_TRACE_SYS_MAX 0x0064
#define _SC_TRACE_USER_EVENT_MAX 0x0065
#define _SC_TTY_NAME_MAX 0x0066
#define _SC_TYPED_MEMORY_OBJECTS 0x0067
#define _SC_TZNAME_MAX 0x0068
#define _SC_V6_ILP32_OFF32 0x0069
#define _SC_V6_ILP32_OFFBIG 0x006a
#define _SC_V6_LP64_OFF64 0x006b
#define _SC_V6_LPBIG_OFFBIG 0x006c
#define _SC_VERSION 0x006d
#define _SC_XBS5_ILP32_OFF32 0x006e
#define _SC_XBS5_ILP32_OFFBIG 0x006f
#define _SC_XBS5_LP64_OFF64 0x0070
#define _SC_XBS5_LPBIG_OFFBIG 0x0071
#define _SC_XOPEN_CRYPT 0x0072
#define _SC_XOPEN_ENH_I18N 0x0073
#define _SC_XOPEN_LEGACY 0x0074
#define _SC_XOPEN_REALTIME 0x0075
#define _SC_XOPEN_REALTIME_THREADS 0x0076
#define _SC_XOPEN_SHM 0x0077
#define _SC_XOPEN_STREAMS 0x0078
#define _SC_XOPEN_UNIX 0x0079
#define _SC_XOPEN_VERSION 0x007a
#define _SC_PHYS_PAGES 0x007b
#define _SC_AVPHYS_PAGES 0x007c
#define _SC_NPROCESSORS_CONF 0x007d
#define _SC_NPROCESSORS_ONLN 0x007e
#define _CS_PATH 1
#define _CS_POSIX_V6_ILP32_OFF32_CFLAGS 2
#define _CS_POSIX_V6_ILP32_OFF32_LDFLAGS 3
#define _CS_POSIX_V6_ILP32_OFF32_LIBS 4
#define _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS 5
#define _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS 6
#define _CS_POSIX_V6_ILP32_OFFBIG_LIBS 7
#define _CS_POSIX_V6_LP64_OFF64_CFLAGS 8
#define _CS_POSIX_V6_LP64_OFF64_LDFLAGS 9
#define _CS_POSIX_V6_LP64_OFF64_LIBS 10
#define _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS 11
#define _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS 12
#define _CS_POSIX_V6_LPBIG_OFFBIG_LIBS 13
#define _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS 14
#define STDERR_FILENO 2
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define getdtablesize(f) ((int)sysconf(_SC_OPEN_MAX))
#define getpagesize(f) ((int)sysconf(_SC_PAGESIZE))
#define optarg (*(getoptargp()))
#define opterr (*(getopterrp()))
#define optind (*(getoptindp()))
#define optopt (*(getoptoptp()))
#if defined(CONFIG_FS_LARGEFILE)
# define lseek64 lseek
# define pread64 pread
# define pwrite64 pwrite
# define truncate64 truncate
# define ftruncate64 ftruncate
# define lockf64 lockf
#endif
* CONFIG_LIBC_ENVPATH is defined, then only execvp/execlp/execvpe behavior
* is supported; otherwise, only execv/execl/execve behavior is supported.
*/
#ifdef CONFIG_LIBC_EXECFUNCS
# define execvp execv
# define execlp execl
# define execvpe execve
#endif
* F_ULOCK - Unlock
* F_LOCK - Blocking Exclusive Lock
* F_TLOCK - Attempted Exclusive Locking
* F_TEST - Test Locked Status
*/
#define F_ULOCK 0
#define F_LOCK 1
#define F_TLOCK 2
#define F_TEST 3
#if defined(CONFIG_BUILD_FLAT) || defined(__KERNEL__)
# define _SCHED_GETTID() nxsched_gettid()
#else
# define _SCHED_GETTID() gettid()
#endif
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
* Public Function Prototypes
****************************************************************************/
pid_t fork(void);
pid_t vfork(void);
pid_t getpid(void);
pid_t getpgid(pid_t);
pid_t getpgrp(void);
pid_t getppid(void);
void _exit(int) noreturn_function;
unsigned int sleep(unsigned int);
int usleep(useconds_t);
int pause(void);
int nice(int);
int daemon(int, int);
int close(int);
int dup(int);
int dup2(int, int);
int dup3(int, int, int);
int fsync(int);
int fdatasync(int);
off_t lseek(int, off_t, int);
ssize_t read(int, FAR void *, size_t);
ssize_t write(int, FAR const void *, size_t);
ssize_t pread(int, FAR void *, size_t, off_t);
ssize_t pwrite(int, FAR const void *, size_t, off_t);
int ftruncate(int, off_t);
int fchown(int, uid_t, gid_t);
int lockf(int, int, off_t);
int isatty(int);
FAR char *ttyname(int);
int ttyname_r(int, FAR char *, size_t);
#if defined(CONFIG_ARCH_ADDRENV) && defined(CONFIG_MM_PGALLOC) && \
defined(CONFIG_ARCH_USE_MMU)
FAR void *sbrk(intptr_t incr);
#endif
int pipe(int pipefd[2]);
int pipe2(int pipefd[2], int flags);
unsigned int alarm(unsigned int);
int chdir(FAR const char *);
int fchdir(int);
FAR char *getcwd(FAR char *, size_t);
FAR char *get_current_dir_name(void);
int access(FAR const char *, int);
int faccessat(int, FAR const char *, int, int);
int rmdir(FAR const char *);
int unlink(FAR const char *);
int unlinkat(int, FAR const char *, int);
int truncate(FAR const char *, off_t);
int link(FAR const char *, FAR const char *);
int linkat(int, FAR const char *, int, FAR const char *, int);
int symlink(FAR const char *, FAR const char *);
int symlinkat(FAR const char *, int, FAR const char *);
ssize_t readlink(FAR const char *, FAR char *, size_t);
ssize_t readlinkat(int, FAR const char *, FAR char *, size_t);
int chown(FAR const char *, uid_t, gid_t);
int lchown(FAR const char *, uid_t, gid_t);
int fchownat(int, FAR const char *, uid_t, gid_t, int);
#ifdef CONFIG_LIBC_EXECFUNCS
int execl(FAR const char *, FAR const char *, ...);
int execle(FAR const char *, FAR const char *, ...);
int execv(FAR const char *, FAR char * const[]);
int execve(FAR const char *, FAR char *const[],
FAR char *const[]);
#endif
void swab(FAR const void *, FAR void *, ssize_t);
int getopt(int, FAR char * const[], FAR const char *);
FAR char **getoptargp(void);
FAR int *getopterrp(void);
FAR int *getoptindp(void);
FAR int *getoptoptp(void);
int gethostname(FAR char *, size_t);
int sethostname(FAR const char *, size_t);
long sysconf(int);
long fpathconf(int, int);
long pathconf(FAR const char *, int);
size_t confstr(int, FAR char *, size_t);
int setuid(uid_t);
uid_t getuid(void);
int setgid(gid_t);
gid_t getgid(void);
int seteuid(uid_t);
uid_t geteuid(void);
int setegid(gid_t);
gid_t getegid(void);
int setreuid(uid_t, uid_t);
int setregid(gid_t, gid_t);
int getentropy(FAR void *, size_t);
void sync(void);
int syncfs(int);
int profil(FAR unsigned short *, size_t, size_t, unsigned int);
FAR char *getpass(FAR const char *);
#ifdef CONFIG_CRYPTO
FAR char *crypt(FAR const char *, FAR const char *);
FAR char *crypt_r(FAR const char *, FAR const char *, FAR char *);
#endif
* Inline Functions
****************************************************************************/
* Name: gettid
*
* Description:
* Get the thread ID of the currently executing thread.
*
* Input parameters:
* None
*
* Returned Value:
* On success, returns the thread ID of the calling process.
*
****************************************************************************/
static inline_function pid_t gettid(void)
{
#ifdef TLS_FROM_TCB
DEBUGASSERT(this_task()->pid ==
((FAR struct tls_info_s *)tls_get_info())->tl_tid);
return this_task()->pid;
#else
FAR struct tls_info_s *tls = tls_get_info();
return tls ? tls->tl_tid : IDLE_PROCESS_ID;
#endif
}
#if CONFIG_FORTIFY_SOURCE > 0
fortify_function(getcwd) FAR char *getcwd(FAR char *buf,
size_t size)
{
fortify_assert(size <= fortify_size(buf, 0));
return __real_getcwd(buf, size);
}
fortify_function(gethostname) int gethostname(FAR char *name,
size_t namelen)
{
fortify_assert(namelen <= fortify_size(name, 0));
return __real_gethostname(name, namelen);
}
fortify_function(pread) ssize_t pread(int fd, FAR void *buf,
size_t nbytes, off_t offset)
{
fortify_assert(nbytes <= fortify_size(buf, 0));
return __real_pread(fd, buf, nbytes, offset);
}
fortify_function(read) ssize_t read(int fd, FAR void *buf,
size_t nbytes)
{
fortify_assert(nbytes <= fortify_size(buf, 0));
return __real_read(fd, buf, nbytes);
}
fortify_function(readlink) ssize_t readlink(FAR const char *path,
FAR char *buf,
size_t bufsize)
{
fortify_assert(bufsize <= fortify_size(buf, 0));
return __real_readlink(path, buf, bufsize);
}
fortify_function(readlinkat) ssize_t readlinkat(int dirfd,
FAR const char *path,
FAR char *buf,
size_t bufsize)
{
fortify_assert(bufsize <= fortify_size(buf, 0));
return __real_readlinkat(dirfd, path, buf, bufsize);
}
fortify_function(ttyname_r) int ttyname_r(int fd, FAR char *buf,
size_t buflen)
{
fortify_assert(buflen <= fortify_size(buf, 0));
return __real_ttyname_r(fd, buf, buflen);
}
fortify_function(pwrite) ssize_t pwrite(int fd, FAR const void *buf,
size_t nbytes, off_t offset)
{
fortify_assert(nbytes <= fortify_size(buf, 0));
return __real_pwrite(fd, buf, nbytes, offset);
}
fortify_function(write) ssize_t write(int fd, FAR const void *buf,
size_t nbytes)
{
fortify_assert(nbytes <= fortify_size(buf, 0));
return __real_write(fd, buf, nbytes);
}
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif