| /* Reentrant versions of open system call. */ |
| |
| #include <reent.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <_syslist.h> |
| |
| /* Some targets provides their own versions of this functions. Those |
| targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */ |
| |
| #ifdef _REENT_ONLY |
| #ifndef REENTRANT_SYSCALLS_PROVIDED |
| #define REENTRANT_SYSCALLS_PROVIDED |
| #endif |
| #endif |
| |
| #ifndef REENTRANT_SYSCALLS_PROVIDED |
| |
| /* We use the errno variable used by the system dependent layer. */ |
| #undef errno |
| extern int errno; |
| |
| /* |
| FUNCTION |
| <<_open_r>>---Reentrant version of open |
| |
| INDEX |
| _open_r |
| |
| ANSI_SYNOPSIS |
| #include <reent.h> |
| int _open_r(struct _reent *<[ptr]>, |
| const char *<[file]>, int <[flags]>, int <[mode]>); |
| |
| TRAD_SYNOPSIS |
| #include <reent.h> |
| int _open_r(<[ptr]>, <[file]>, <[flags]>, <[mode]>) |
| struct _reent *<[ptr]>; |
| char *<[file]>; |
| int <[flags]>; |
| int <[mode]>; |
| |
| DESCRIPTION |
| This is a reentrant version of <<open>>. It |
| takes a pointer to the global data block, which holds |
| <<errno>>. |
| */ |
| |
| int |
| _DEFUN (_open_r, (ptr, file, flags, mode), |
| struct _reent *ptr _AND |
| _CONST char *file _AND |
| int flags _AND |
| int mode) |
| { |
| int ret; |
| |
| errno = 0; |
| if ((ret = _open (file, flags, mode)) == -1 && errno != 0) |
| ptr->_errno = errno; |
| return ret; |
| } |
| |
| |
| #endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */ |
