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b1fac37760
* lib/fsusage.c: Fall back to (struct statfs).f_frsize which is available since Linux 2.6. * m4/fsusage.m4 (STAT_STATFS2_FRSIZE): Always define when the member is available so it can be used as a fallback. * doc/posix-functions/statvfs.texi: Mention the hang issue on Linux < 2.6.36.
32 lines
919 B
Plaintext
32 lines
919 B
Plaintext
@node statvfs
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@section @code{statvfs}
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@findex statvfs
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/statvfs.html}
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Gnulib module: ---
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Portability problems fixed by Gnulib:
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@itemize
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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This function is missing on some platforms:
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MacOS X 10.3, OpenBSD 3.8, mingw, MSVC 9.
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@item
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This function can hang if it stats all preceding
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entries in /proc/mounts, and any of those file systems
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are hard-mounted and not available. This affects
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Linux < 2.6.36.
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@item
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On platforms where @code{f_blocks} in @samp{struct statvfs} is a 32-bit
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value, this function may not work correctly on files systems larger than
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4 TiB. The fix is to use the @code{AC_SYS_LARGEFILE} macro. This affects
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glibc/Hurd, HP-UX 11, Solaris.
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@end itemize
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Gnulib provides a module @code{fsusage} that provides similar information
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as @code{statvfs}.
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