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| -rw-r--r-- | Doc/lib/libos.tex | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex index 2fbecfa..3662a46 100644 --- a/Doc/lib/libos.tex +++ b/Doc/lib/libos.tex @@ -692,6 +692,11 @@ Availability: Macintosh, \UNIX, Windows. open a file before actually doing so using \function{open()} creates a security hole, because the user might exploit the short time interval between checking and opening the file to manipulate it.} + +\note{I/O operations may fail even when \function{access()} +indicates that they would succeed, particularly for operations +on network filesystems which may have permissions semantics +beyond the usual \POSIX{} permission-bit model.} \end{funcdesc} \begin{datadesc}{F_OK} |