NAME
fs_symlinks — maximum number of symbolic links used to resolve a path name
VALUES
Allowed values
The minimum value allowed is 20. The maximum value allowed is 1024, or 1K.
Specify a positive integer value.
DESCRIPTION
The
fs_symlinks
tunable represents the maximum number of symbolic links followed by the kernel when resolving a path name.
Applications that create symbolic links and/or parse path names
should also now use this limit represented by
fs_symlinks
to be consistent with the kernel.
Who Is Expected to Change This Tunable?
Anyone expecting to run applications using path names that may expand to a large number of symbolic links.
Restrictions on Changing
None. The
fs_symlinks
tunable is dynamic (tuning will take effect immediately on the running system).
When Should the Value of This Tunable Be Raised?
This tunable value should be raised when applications are expected to
create and/or parse path names that may expand to a large number of symbolic links.
What are the Side Effects of Raising the Value?
None.
When Should the Value of This Tunable Be Lowered?
This value rarely needs to be lowered, unless there is a reason
to limit the number of symbolic links in an expanded path name.
What are the Side Effects of Lowering the Value?
The kernel will not be able to resolve path names with more symbolic links than the limit represented by
fs_symlinks.
What Other Tunable Values Should Be Changed at the Same Time?
None.
WARNINGS
All HP-UX kernel tunable parameters are release specific.
This parameter may be removed or have its meaning changed in
future releases of HP-UX.
NOTE:
The define
MAXSYMLINKS,
traditionally defined in
<sys/param.h>,
is now obsolete and should not be used.
This limit (number of symbolics links that may be expanded in a path name) is now available
to applications via this new tunable parameter,
fs_symlinks.
The interfaces provided by the tunable infrastructure
should be used to obtain the value of
fs_symlinks.
At the application level, use the
gettune(2)
or
kctune(1M)
interface.
Applications using the
MAXSYMLINKS
define may not be consistent with the
kernel. The
MAXSYMLINKS
define will be removed in post-HP-UX 11i Version 2 releases.
Installation of optional kernel software, from HP or other vendors,
may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or
recommended values. For information about the effects of
installation on tunable values, consult the documentation
for the kernel software being installed.
For information about optional kernel software that was
factory installed on your system, see
HP-UX Release Notes
at
http://docs.hp.com.
AUTHOR
fs_symlinks
was developed by HP.
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