Mercurial > gnulib
view doc/posix-functions/openat.texi @ 40139:3bacbf659cc9
ttyname_r: Work around bug on Android 4.3.
* m4/ttyname_r.m4 (gl_FUNC_TTYNAME_R): Test whether ttyname_r is a stub.
* lib/ttyname_r.c (ttyname_r): Implement for Android.
* doc/posix-functions/ttyname_r.texi: Mention the Android bug.
* doc/posix-functions/ttyname.texi: Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 26 Jan 2019 11:56:31 +0100 |
parents | af227a875ce7 |
children |
line wrap: on
line source
@node openat @section @code{openat} @findex openat POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/openat.html} Gnulib module: openat Portability problems fixed by Gnulib: @itemize @item This function is missing on some platforms: glibc 2.3.6, Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Cygwin 1.5.x, mingw, MSVC 14, Interix 3.5, BeOS. But the replacement function is not safe to be used in libraries and is not multithread-safe. @item Some platforms do not support @code{O_CLOEXEC}: AIX 7.1, Solaris 10. @item On platforms where @code{off_t} is a 32-bit type, @code{open} may not work correctly with files larger than 2 GB. (Cf. @code{AC_SYS_LARGEFILE}.) @item This function does not fail when the file name argument ends in a slash and (without the slash) names a nonexistent file or a file that is not a directory, on some platforms: Solaris 9. @end itemize Portability problems not fixed by Gnulib: @itemize @item The Gnulib replacement for @code{O_CLOEXEC} is not atomic, and so is not safe in the presence of multiple threads or signal handlers. @item @code{openat (fd, "symlink", O_NOFOLLOW ...)} fails with @code{errno} set to @code{EMLINK} instead of the POSIX-required @code{ELOOP} on some platforms: FreeBSD 10.1. @item @code{openat (fd, "symlink", O_NOFOLLOW ...)} fails with @code{errno} set to @code{EFTYPE} instead of the POSIX-required @code{ELOOP} on some platforms: NetBSD 6.1. @end itemize