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uplex-varnish
libvmod-blobcode
Commits
ea7344da
Commit
ea7344da
authored
Jan 31, 2016
by
Geoff Simmons
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add the configure option to enable the stack protector (on by default)
parent
c787c253
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25 additions
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-11
configure.ac
configure.ac
+13
-0
vmod_blobcode.vcc
src/vmod_blobcode.vcc
+12
-11
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configure.ac
View file @
ea7344da
...
@@ -69,6 +69,19 @@ AC_PATH_PROG([VARNISHTEST], [varnishtest], [],
...
@@ -69,6 +69,19 @@ AC_PATH_PROG([VARNISHTEST], [varnishtest], [],
AC_PATH_PROG([VARNISHD], [varnishd], [],
AC_PATH_PROG([VARNISHD], [varnishd], [],
[$LIBVARNISHAPI_SBINDIR:$LIBVARNISHAPI_BINDIR:$PATH])
[$LIBVARNISHAPI_SBINDIR:$LIBVARNISHAPI_BINDIR:$PATH])
# --enable-stack-protector
AC_ARG_ENABLE(stack-protector,
AS_HELP_STRING([--enable-stack-protector],[enable stack protector (default is YES)]),
[],
[enable_stack_protector=yes])
if test "x$enable_stack_protector" != "xno"; then
AX_CHECK_COMPILE_FLAG([-fstack-protector],
AX_CHECK_LINK_FLAG([-fstack-protector],
[CFLAGS="${CFLAGS} -fstack-protector"], [], []),
[], [])
fi
AC_CONFIG_FILES([
AC_CONFIG_FILES([
Makefile
Makefile
src/Makefile
src/Makefile
...
...
src/vmod_blobcode.vcc
View file @
ea7344da
...
@@ -297,17 +297,18 @@ The VMOD allocates memory in various ways for new blobs and
...
@@ -297,17 +297,18 @@ The VMOD allocates memory in various ways for new blobs and
strings. The ``blob`` object and its methods allocate memory from the
strings. The ``blob`` object and its methods allocate memory from the
heap, and hence they are only limited by available virtual memory.
heap, and hence they are only limited by available virtual memory.
The ``encode()`` and ``decode()`` functions allocate Varnish
The ``encode()``, ``decode()`` and ``transcode()`` functions allocate
workspace. If these functions are failing, as indicated by "out of
Varnish workspace. If these functions are failing, as indicated by
space" messages in the Varnish log (with the ``VCL_Error`` tag), then
"out of space" messages in the Varnish log (with the ``VCL_Error``
you will need to increase the varnishd parameters ``workspace_client``
tag), then you will need to increase the varnishd parameters
and/or ``workspace_backend``.
``workspace_client`` and/or ``workspace_backend``.
The ``transcode()`` function also allocates workspace for the string
The ``transcode()`` function also allocates space on the stack for a
that it returns, and it allocates space on the stack for a temporary
temporary BLOB. If this function causes stack overflow, you may need
BLOB. If this function causes stack overflow, you may need to increase
to increase the stack size for the varnishd process, for example with
the stack size for the varnishd process, for example with ``ulimit
``ulimit -s``. By default, the VMOD is built with the stack protector
-s``.
enabled (compile option ``-fstack-protector``), but it can be disabled
with the ``./configure`` option ``--disable-stack-protector``.
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