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194 lines
6.3 KiB
194 lines
6.3 KiB
/**************************************************************************** |
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* include/unistd.h |
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* |
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* Copyright (C) 2007-2009, 2013 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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#ifndef __INCLUDE_UNISTD_H |
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#define __INCLUDE_UNISTD_H |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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#include <sys/types.h> |
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#include <nuttx/compiler.h> |
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/**************************************************************************** |
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* Pre-processor Definitions |
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****************************************************************************/ |
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/* The number of functions that may be registerd to be called |
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* at program exit. |
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*/ |
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#define ATEXIT_MAX 1 |
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/* Values for seeking */ |
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#define SEEK_SET 0 /* From the start of the file */ |
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#define SEEK_CUR 1 /* From the current file offset */ |
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#define SEEK_END 2 /* From the end of the file */ |
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/* Bit values for the second argument to access */ |
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#define F_OK 0 /* Test existence */ |
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#define R_OK 1 /* Test read permission */ |
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#define W_OK 2 /* Test write permission */ |
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#define X_OK 4 /* Test execute permission */ |
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/* POSIX feature set macros */ |
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#define POSIX_VERSION |
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#undef _POSIX_SAVED_IDS |
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#undef _POSIX_JOB_CONTROL |
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#define _POSIX_REALTIME_SIGNALS 1 |
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#define _POSIX_MESSAGE_PASSING 1 |
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#undef _POSIX_MAPPED_FILES |
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#undef _POSIX_SHARED_MEMORY_OBJECTS |
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#define _POSIX_PRIORITY_SCHEDULING 1 |
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#define _POSIX_TIMERS |
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#undef _POSIX_MEMLOCK |
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#undef _POSIX_MEMLOCK_RANGE |
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#undef _POSIX_FSYNC |
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#define _POSIX_SYNCHRONIZED_IO |
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#undef _POSIX_ASYNCHRONOUS_IO |
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#undef _POSIX_PRIORITIZED_IO |
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/* Execution time constants (not supported) */ |
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#undef _POSIX_CHOWN_RESTRICTED |
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#undef _POSIX_NO_TRUNC |
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#undef _POSIX_VDISABLE |
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#define _POSIX_SYNC_IO |
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#undef _POSIX_ASYNC_IO |
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#undef _POSIX_PRIO_IO |
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#define fdatasync(f) fsync(f) |
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/**************************************************************************** |
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* Global Variables |
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****************************************************************************/ |
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#undef EXTERN |
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#if defined(__cplusplus) |
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#define EXTERN extern "C" |
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extern "C" { |
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#else |
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#define EXTERN extern |
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#endif |
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/* Used by getopt (obviously NOT thread safe!). These variables cannot be |
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* accessed directly by an external NXFLAT module. In that case, accessor |
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* functions must be used. |
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*/ |
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#ifndef __NXFLAT__ |
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EXTERN FAR char *optarg; /* Optional argument following option */ |
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EXTERN int optind; /* Index into argv */ |
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EXTERN int optopt; /* unrecognized option character */ |
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#else |
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# define optarg (*(getoptargp())) |
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# define optind (*(getopindgp())) |
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# define optopt (*(getoptoptp())) |
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#endif |
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/**************************************************************************** |
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* Global Function Prototypes |
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****************************************************************************/ |
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/* Task Control Interfaces */ |
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EXTERN pid_t vfork(void); |
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EXTERN pid_t getpid(void); |
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EXTERN void _exit(int status) noreturn_function; |
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EXTERN unsigned int sleep(unsigned int seconds); |
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EXTERN int usleep(useconds_t usec); |
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EXTERN int pause(void); |
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/* File descriptor operations */ |
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EXTERN int close(int fd); |
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EXTERN int dup(int fd); |
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EXTERN int dup2(int fd1, int fd2); |
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EXTERN int fsync(int fd); |
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EXTERN off_t lseek(int fd, off_t offset, int whence); |
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EXTERN ssize_t read(int fd, FAR void *buf, size_t nbytes); |
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EXTERN ssize_t write(int fd, FAR const void *buf, size_t nbytes); |
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/* Special devices */ |
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EXTERN int pipe(int filedes[2]); |
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/* Working directory operations */ |
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EXTERN int chdir(FAR const char *path); |
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EXTERN FAR char *getcwd(FAR char *buf, size_t size); |
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/* File path operations */ |
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EXTERN int unlink(FAR const char *pathname); |
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EXTERN int rmdir(FAR const char *pathname); |
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/* Execution of programs from files */ |
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#ifdef CONFIG_LIBC_EXECFUNCS |
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EXTERN int execl(FAR const char *path, ...); |
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EXTERN int execv(FAR const char *path, FAR char *const argv[]); |
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/* Non-standard functions to manage symbol tables */ |
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struct symtab_s; /* See include/nuttx/binfmt/symtab.h */ |
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EXTERN void exec_getsymtab(FAR const struct symtab_s **symtab, FAR int *nsymbols); |
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EXTERN void exec_setsymtab(FAR const struct symtab_s *symtab, int nsymbols); |
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#endif |
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/* Other */ |
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EXTERN int getopt(int argc, FAR char *const argv[], FAR const char *optstring); |
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/* Accessor functions intended for use only by external NXFLAT |
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* modules. The global variables optarg, optind, and optopt cannot |
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* be referenced directly from external modules. |
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*/ |
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EXTERN FAR char **getoptargp(void); /* Optional argument following option */ |
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EXTERN int *getopindgp(void); /* Index into argv */ |
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EXTERN int *getoptoptp(void); /* unrecognized option character */ |
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#undef EXTERN |
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#if defined(__cplusplus) |
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} |
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#endif |
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#endif /* __INCLUDE_UNISTD_H */
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