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Diffstat (limited to 'gnulib/doc/posix-functions/futimens.texi')
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-rw-r--r-- | gnulib/doc/posix-functions/futimens.texi | 48 |
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diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/doc/posix-functions/futimens.texi b/gnulib/doc/posix-functions/futimens.texi new file mode 100644 index 0000000..722a114 --- /dev/null +++ b/gnulib/doc/posix-functions/futimens.texi @@ -0,0 +1,48 @@ +@node futimens +@section @code{futimens} +@findex futimens + +POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/futimens.html} + +Gnulib module: futimens + +Portability problems fixed by Gnulib: +@itemize +@item +This function is missing on some platforms: +glibc 2.3.6, MacOS 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, Solaris 10, Cygwin 1.5.x, mingw, MSVC 9, +Interix 3.5, BeOS. +However, the replacement function may end up truncating timestamps to +less resolution than supported by the file system. +@item +This function returns a bogus value instead of failing with +@code{ENOSYS} on some platforms: +Linux kernel 2.6.21. +@item +When using @code{UTIME_OMIT} or @code{UTIME_NOW}, some systems require +the @code{tv_sec} argument to be 0, and don't necessarily handle all +file permissions in the manner required by POSIX: +Linux kernel 2.6.25. +@item +When using @code{UTIME_OMIT} for the modification time, but specifying +an access time, some systems fail to update the change time: +Linux kernel 2.6.32. +@item +Passing @code{AT_FDCWD} as the fd argument does not properly fail with +@code{EBADF} on some systems: +glibc 2.11, Solaris 11. +@end itemize + +Portability problems not fixed by Gnulib: +@itemize +@item +Some platforms lack the ability to change the timestamps of a file +descriptor, so the replacement can fail with @code{ENOSYS}; the gnulib +module @samp{utimens} provides a more reliable interface @code{fdutimens}. +@item +The mere act of using @code{stat} modifies the access time of +directories on some platforms, so @code{utimensat} can only +effectively change directory modification time: +Cygwin 1.5.x. +@end itemize |