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annotate doc/posix-functions/readlink.texi @ 10876:c83dc7e8df57

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Refer to new POSIX:2008 standard.
author Bruno Haible <bruno@clisp.org>
date Sun, 14 Dec 2008 14:38:13 +0100
parents 070329237839
children 36183b482b71
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070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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1 @node readlink
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2 @section @code{readlink}
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3 @findex readlink
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4
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c83dc7e8df57 Refer to new POSIX:2008 standard.
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5 POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/readlink.html}
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6
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7 Gnulib module: readlink
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8
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9 Portability problems fixed by Gnulib:
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10 @itemize
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11 @item
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12 This function is missing on some platforms:
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13 mingw.
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14 @end itemize
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15
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16 Portability problems not fixed by Gnulib:
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17 @itemize
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18 @item
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19 When @code{readlink} is called on a directory: In the case of NFS mounted
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20 directories, Cygwin sets @code{errno} to @code{ENOENT} or @code{EIO} instead of
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21 @code{EINVAL}. To avoid this problem, check for a directory before calling
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22 @code{readlink}.
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23 @item
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24 When @code{readlink} is called on a file that is not a symbolic link:
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25 Irix may set @code{errno} to @code{ENXIO} instead of @code{EINVAL}. Cygwin
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26 may set errno to @code{EACCES} instead of @code{EINVAL}.
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27 @end itemize