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