88 lines
3.5 KiB
C
88 lines
3.5 KiB
C
/* This header file provides the reentrancy. */
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/* The reentrant system calls here serve two purposes:
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1) Provide reentrant versions of the system calls the ANSI C library
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requires.
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2) Provide these system calls in a namespace clean way.
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It is intended that *all* system calls that the ANSI C library needs
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be declared here. It documents them all in one place. All library access
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to the system is via some form of these functions.
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There are three ways a target may provide the needed syscalls.
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1) Define the reentrant versions of the syscalls directly.
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(eg: _open_r, _close_r, etc.). Please keep the namespace clean.
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When you do this, set "syscall_dir" to "syscalls" in configure.in,
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and add -DREENTRANT_SYSCALLS_PROVIDED to target_cflags in configure.in.
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2) Define namespace clean versions of the system calls by prefixing
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them with '_' (eg: _open, _close, etc.). Technically, there won't be
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true reentrancy at the syscall level, but the library will be namespace
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clean.
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When you do this, set "syscall_dir" to "syscalls" in configure.in.
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3) Define or otherwise provide the regular versions of the syscalls
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(eg: open, close, etc.). The library won't be reentrant nor namespace
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clean, but at least it will work.
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When you do this, add -DMISSING_SYSCALL_NAMES to target_cflags in
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configure.in.
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Stubs of the reentrant versions of the syscalls exist in the libc/reent
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source directory and are used if REENTRANT_SYSCALLS_PROVIDED isn't defined.
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They use the native system calls: _open, _close, etc. if they're available
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(MISSING_SYSCALL_NAMES is *not* defined), otherwise open, close, etc.
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(MISSING_SYSCALL_NAMES *is* defined). */
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/* WARNING: All identifiers here must begin with an underscore. This file is
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included by stdio.h and others and we therefore must only use identifiers
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in the namespace allotted to us. */
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#ifndef _REENT_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define _REENT_H_
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#include <sys/reent.h>
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#include <sys/_types.h>
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#include <machine/types.h>
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#define __need_size_t
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#include <stddef.h>
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/* FIXME: not namespace clean */
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struct stat;
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struct tms;
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struct timeval;
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struct timezone;
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/* Reentrant versions of system calls. */
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extern int _close_r _PARAMS ((struct _reent *, int));
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extern int _execve_r _PARAMS ((struct _reent *, char *, char **, char **));
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extern int _fcntl_r _PARAMS ((struct _reent *, int, int, int));
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extern int _fork_r _PARAMS ((struct _reent *));
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extern int _fstat_r _PARAMS ((struct _reent *, int, struct stat *));
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extern int _getpid_r _PARAMS ((struct _reent *));
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extern int _kill_r _PARAMS ((struct _reent *, int, int));
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extern int _link_r _PARAMS ((struct _reent *, const char *, const char *));
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extern _off_t _lseek_r _PARAMS ((struct _reent *, int, _off_t, int));
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extern int _open_r _PARAMS ((struct _reent *, const char *, int, int));
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extern _ssize_t _read_r _PARAMS ((struct _reent *, int, void *, size_t));
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extern void *_sbrk_r _PARAMS ((struct _reent *, size_t));
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extern int _stat_r _PARAMS ((struct _reent *, const char *, struct stat *));
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extern _CLOCK_T_ _times_r _PARAMS ((struct _reent *, struct tms *));
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extern int _unlink_r _PARAMS ((struct _reent *, const char *));
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extern int _wait_r _PARAMS ((struct _reent *, int *));
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extern _ssize_t _write_r _PARAMS ((struct _reent *, int, const void *, size_t));
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/* This one is not guaranteed to be available on all targets. */
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extern int _gettimeofday_r _PARAMS ((struct _reent *, struct timeval *tp, struct timezone *tzp));
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#ifdef __cplusplus
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}
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#endif
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#endif /* _REENT_H_ */
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