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51 lines
1.6 KiB
Plaintext
51 lines
1.6 KiB
Plaintext
@node dirent.h
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@section @file{dirent.h}
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/basedefs/dirent.h.html}
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Gnulib module: dirent
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Portability problems fixed by Gnulib:
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@itemize
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@item
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The type @code{ino_t} is missing on some platforms:
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glibc 2.23 and others.
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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 header file is missing on some platforms:
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MSVC 14.
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@item
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Although many systems define a @code{struct dirent} member named
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@code{d_type} and directory entry type macros like @code{DT_DIR} and
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@code{DT_LNK}, some do not:
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Minix 3.1.8, AIX 7.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 11 2011-11, mingw, Interix 3.5, BeOS.
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@item
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On systems with @code{d_type}, not every filesystem supports
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@code{d_type}, and those lacking support will set it to @code{DT_UNKNOWN}.
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@item
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Some systems define a @code{struct dirent} member named @code{d_namlen}
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containing the string length of @code{d_name}, but others do not:
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glibc 2.23 on Linux, Minix 3.1.8, Solaris 11 2011-11, Cygwin, BeOS.
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All of these, except Cygwin, have a member @code{d_reclen} instead,
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that has a different semantics.
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@item
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Some systems define a @code{struct dirent} member named @code{d_off}
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containing a magic cookie suitable as an argument to @code{seekdir},
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but others do not:
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glibc 2.23 on Hurd, Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, AIX 5.1, HP-UX 11, OSF/1 5.1, Cygwin, mingw, Interix 3.5, BeOS.
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@item
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Some systems define a @code{struct dirent} member named
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@code{d_reclen} containing the number of bytes in the directory entry
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record, but others do not. This member has limited utility, as it is
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an implementation detail.
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@end itemize
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