Author: jilles
Date: Sun Mar 18 21:46:27 2012
New Revision: 233132
URL: http://svn.freebsd.org/changeset/base/233132
Log:
fts(3): Mention that FTS_NOCHDIR imposes {PATH_MAX} limits on the returned
pathnames.
With the current API (no *at functions), FTS_NOCHDIR requires that the
fts_accpath start with the original path passed to fts_open(); therefore,
the depth that can be reached is limited by the {PATH_MAX} constraint on
this pathname.
MFC after: 1 week
Modified:
head/lib/libc/gen/fts.3
Modified: head/lib/libc/gen/fts.3
==============================================================================
--- head/lib/libc/gen/fts.3 Sun Mar 18 21:19:21 2012 (r233131)
+++ head/lib/libc/gen/fts.3 Sun Mar 18 21:46:27 2012 (r233132)
@@ -419,14 +419,17 @@ be provided to the
.Fn fts_open
function.
.It Dv FTS_NOCHDIR
-As a performance optimization, the
+To allow descending to arbitrary depths
+(independent of
+.Brq Dv PATH_MAX )
+and improve performance, the
.Nm
functions change directories as they walk the file hierarchy.
This has the side-effect that an application cannot rely on being
in any particular directory during the traversal.
The
.Dv FTS_NOCHDIR
-option turns off this optimization, and the
+option turns off this feature, and the
.Nm
functions will not change the current directory.
Note that applications should not themselves change their current directory
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