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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [newlib/] [libc/] [reent/] [fcntlr.c] - Rev 816
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/* Reentrant versions of fcntl system call. This implementation just calls the fcntl system call. */ #include <reent.h> #include <fcntl.h> #include <sys/stat.h> #include <_syslist.h> /* Some targets provides their own versions of these 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 <<_fcntl_r>>---Reentrant version of fcntl INDEX _fcntl_r ANSI_SYNOPSIS #include <reent.h> int _fcntl_r(struct _reent *<[ptr]>, int <[fd]>, int <[cmd]>, <[arg]>); TRAD_SYNOPSIS #include <reent.h> int _fcntl_r(<[ptr]>, <[fd]>, <[cmd]>, <[arg]>) struct _reent *<[ptr]>; int <[fd]>; int <[cmd]>; int <[arg]>; DESCRIPTION This is a reentrant version of <<fcntl>>. It takes a pointer to the global data block, which holds <<errno>>. */ int _DEFUN (_fcntl_r, (ptr, fd, cmd, arg), struct _reent *ptr _AND int fd _AND int cmd _AND int arg) { int ret; errno = 0; if ((ret = _fcntl (fd, cmd, arg)) == -1 && errno != 0) ptr->_errno = errno; return ret; } #endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */