The data returned by readdir() may be overwritten by subsequent calls to readdir() for the same directory stream, so it is not thread-safe. Signed-off-by: Peng Haitao <penght@xxxxxxxxxxxxxx> --- man3/readdir.3 | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/man3/readdir.3 b/man3/readdir.3 index c788ba9..b70dc85 100644 --- a/man3/readdir.3 +++ b/man3/readdir.3 @@ -31,7 +31,7 @@ .\" Rework discussion of nonstandard structure fields. .\" 2008-09-11, mtk, Document readdir_r(). .\" -.TH READDIR 3 2012-07-07 "" "Linux Programmer's Manual" +.TH READDIR 3 2013-03-12 "" "Linux Programmer's Manual" .SH NAME readdir, readdir_r \- read a directory .SH SYNOPSIS @@ -142,6 +142,15 @@ returns 0, and returns NULL in .TP .B EBADF Invalid directory stream descriptor \fIdirp\fP. +.SH ATTRIBUTES +.SS Multithreading (see pthreads(7)) +The +.BR readdir () +function is not thread-safe. +.LP +The +.BR readdir_r () +function is thread-safe. .SH CONFORMING TO SVr4, 4.3BSD, POSIX.1-2001. .SH NOTES -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
