diff options
Diffstat (limited to 'newlib/libc/stdio/fileno.c')
| -rw-r--r-- | newlib/libc/stdio/fileno.c | 24 |
1 files changed, 1 insertions, 23 deletions
diff --git a/newlib/libc/stdio/fileno.c b/newlib/libc/stdio/fileno.c index 7b505827d..be8f3d66a 100644 --- a/newlib/libc/stdio/fileno.c +++ b/newlib/libc/stdio/fileno.c @@ -17,43 +17,23 @@ /* FUNCTION -<<fileno>>, <<fileno_unlocked>>---return file descriptor associated with stream +<<fileno>>---return file descriptor associated with stream INDEX fileno -INDEX - fileno_unlocked ANSI_SYNOPSIS #include <stdio.h> int fileno(FILE *<[fp]>); - #define _BSD_SOURCE - #include <stdio.h> - int fileno_unlocked(FILE *<[fp]>); - TRAD_SYNOPSIS #include <stdio.h> int fileno(<[fp]>) FILE *<[fp]>; - #define _BSD_SOURCE - #include <stdio.h> - int fileno_unlocked(<[fp]>) - FILE *<[fp]>; - DESCRIPTION You can use <<fileno>> to return the file descriptor identified by <[fp]>. -<<fileno_unlocked>> is a non-thread-safe version of <<fileno>>. -<<fileno_unlocked>> may only safely be used within a scope -protected by flockfile() (or ftrylockfile()) and funlockfile(). This -function may safely be used in a multi-threaded program if and only -if they are called while the invoking thread owns the (FILE *) -object, as is the case after a successful call to the flockfile() or -ftrylockfile() functions. If threads are disabled, then -<<fileno_unlocked>> is equivalent to <<fileno>>. - RETURNS <<fileno>> returns a non-negative integer when successful. If <[fp]> is not an open stream, <<fileno>> returns -1. @@ -62,8 +42,6 @@ PORTABILITY <<fileno>> is not part of ANSI C. POSIX requires <<fileno>>. -<<fileno_unlocked>> is a BSD extension also provided by GNU libc. - Supporting OS subroutines required: none. */ |