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Paul Eggert
f42d5af5ba
* doc/posix-functions/faccessat.texi: Modernize platform list. Document AT_SYMLINK_NOFOLLOW limitation.
38 lines
1.1 KiB
Plaintext
38 lines
1.1 KiB
Plaintext
@node faccessat
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@section @code{faccessat}
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@findex faccessat
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/faccessat.html}
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Gnulib module: faccessat
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Portability problems 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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glibc 2.3.6, macOS 10.12, FreeBSD 7.4, NetBSD 6.1.5, OpenBSD 4.9, Minix 3.1.8,
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AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x, mingw, MSVC 14,
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Interix 3.5, BeOS.
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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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The replacement does not always take ACLs into account.
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@item
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The replacement is not safe to be used in libraries.
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@item
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The replacement is not multithread-safe.
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@item
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The replacement does not support the @code{AT_SYMLINK_NOFOLLOW} flag,
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which is supported by GNU @code{faccessat}.
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@end itemize
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Other problems of this function:
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@itemize
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@item
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There is an inherent race between calling this function and performing
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some action based on the results; you should think twice before trusting
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this function, especially in a set-uid or set-gid program.
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@end itemize
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