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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [newlib/] [libc/] [reent/] [isattyr.c] - Rev 847
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/* Reentrant versions of isatty system call. */ #include <reent.h> #include <unistd.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 #ifdef REENTRANT_SYSCALLS_PROVIDED int _dummy_isatty_syscalls = 1; #else /* We use the errno variable used by the system dependent layer. */ #undef errno extern int errno; /* FUNCTION <<_isatty_r>>---Reentrant version of isatty INDEX _isatty_r ANSI_SYNOPSIS #include <reent.h> int _isatty_r(struct _reent *<[ptr]>, int <[fd]>); TRAD_SYNOPSIS #include <reent.h> int _isatty_r(<[ptr]>, <[fd]>) struct _reent *<[ptr]>; int <[fd]>; DESCRIPTION This is a reentrant version of <<isatty>>. It takes a pointer to the global data block, which holds <<errno>>. */ int _isatty_r (ptr, fd) struct _reent *ptr; int fd; { int ret; errno = 0; if ((ret = _isatty (fd)) == -1 && errno != 0) ptr->_errno = errno; return ret; } #endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
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