Signed-off-by: Steven Barth <steven@midlink.org> SVN-Revision: 43730master
parent
c6c0c275bc
commit
5628648f87
@ -1,60 +0,0 @@ |
||||
From 3c30c8b6fd2ea715eb4bdaa5a6d4e1623f28834c Mon Sep 17 00:00:00 2001
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From: Pablo Neira Ayuso <pablo@netfilter.org>
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Date: Sun, 14 Dec 2014 21:04:49 +0100
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Subject: [PATCH 1/3] build: restore --disable-debug
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Fix fallout from the automake conversion. Display after configuration
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if it is enabled or not.
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Reported-by: Steven Barth <cyrus@openwrt.org>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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---
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configure.ac | 10 ++++++----
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src/Makefile.am | 5 ++++-
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2 files changed, 10 insertions(+), 5 deletions(-)
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diff --git a/configure.ac b/configure.ac
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index 1525ac4..b55b2b1 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -24,9 +24,10 @@ AC_DEFINE([_STDC_FORMAT_MACROS], [], [printf-style format macros])
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AC_ARG_ENABLE([debug],
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AS_HELP_STRING([--enable-debug], [Enable debugging]),
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- [CONFIG_DEBUG="$(echo $enableval | cut -b1)"],
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- [CONFIG_DEBUG="y"])
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-AC_SUBST([CONFIG_DEBUG])
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+ [with_debug=no],
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+ [with_debug=yes])
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+AC_SUBST(with_debug)
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+AM_CONDITIONAL([BUILD_DEBUG], [test "x$with_debug" != xno])
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# Checks for programs.
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AC_PROG_CC
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@@ -128,4 +129,5 @@ AC_OUTPUT
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echo "
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nft configuration:
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- cli support: ${with_cli}"
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+ cli support: ${with_cli}
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+ enable debugging: ${with_debug}"
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diff --git a/src/Makefile.am b/src/Makefile.am
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index d53c347..378424d 100644
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--- a/src/Makefile.am
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+++ b/src/Makefile.am
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@@ -3,8 +3,11 @@ sbin_PROGRAMS = nft
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CLEANFILES = scanner.c parser_bison.c
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AM_CPPFLAGS = -I$(top_srcdir)/include
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-AM_CPPFLAGS += -DDEFAULT_INCLUDE_PATH="\"${sysconfdir}\"" -DDEBUG \
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+AM_CPPFLAGS += -DDEFAULT_INCLUDE_PATH="\"${sysconfdir}\"" \
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${LIBMNL_CFLAGS} ${LIBNFTNL_CFLAGS}
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+if BUILD_DEBUG
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+AM_CPPFLAGS += -g -DDEBUG
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+endif
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AM_CFLAGS = -Wall \
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-Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations \
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--
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2.1.3
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@ -1,357 +0,0 @@ |
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From d559314e3e3debe1ff8c2c1372701df6154a53ef Mon Sep 17 00:00:00 2001
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From: Steven Barth <steven@midlink.org>
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Date: Mon, 15 Dec 2014 10:13:39 +0100
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Subject: [PATCH 2/3] build: make nftables usable with mini-gmp
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libgmp usually compiles to >400KB which can put a burden on embedded
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device firmware especially if libgmp isn't used for other purposes.
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mini-gmp in contrast adds only ~30KB to the nft-binary itself.
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However mini-gmp does not support gmp_sscanf and gmp_printf.
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This patch:
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* Adds a configure flag --without-libgmp to select mini-gmp
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* Replaces the single gmp_sscanf occurence with mpz_set_str
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* Replaces calls to gmp_printf outside of pr_debug with
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a minimalistic mpz_printf usable to format one mpz_t
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* Replaces gmp_vasprintf in erec_vcreate with vasprintf
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and rewrites the single user of the gmp format-flags
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* Changes the parser token VERSION to IPHDRVERSION to avoid
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clashes with the VERSION-define in config.h
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Signed-off-by: Steven Barth <cyrus@openwrt.org>
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---
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configure.ac | 17 ++++++++++++++---
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include/expression.h | 2 +-
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include/gmputil.h | 10 ++++++++++
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include/utils.h | 3 +--
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src/Makefile.am | 4 ++++
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src/ct.c | 2 +-
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src/datatype.c | 8 +++-----
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src/erec.c | 6 +++++-
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src/evaluate.c | 8 ++++++--
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src/gmputil.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++-
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src/parser_bison.y | 6 +++---
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src/scanner.l | 2 +-
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12 files changed, 102 insertions(+), 20 deletions(-)
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diff --git a/configure.ac b/configure.ac
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index b55b2b1..1e3729d 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -73,8 +73,18 @@ AM_CONDITIONAL([BUILD_PDF], [test "$DBLATEX" == "found"])
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PKG_CHECK_MODULES([LIBMNL], [libmnl >= 1.0.3])
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PKG_CHECK_MODULES([LIBNFTNL], [libnftnl >= 1.0.2])
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-AC_CHECK_LIB([gmp], [__gmpz_init], ,
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- AC_MSG_ERROR([No suitable version of libgmp found]))
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+AC_ARG_WITH([libgmp], [AS_HELP_STRING([--without-libgmp],
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+ [Disable libgmp support (use builtin mini-gmp)])], [],
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+ [with_libgmp=yes])
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+AS_IF([test "x$with_libgmp" != xno], [
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+AC_CHECK_LIB([gmp],[__gmpz_init], , AC_MSG_ERROR([No suitable version of libgmp found]))
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+])
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+AM_CONDITIONAL([BUILD_MINIGMP], [test "x$with_libgmp" == xno])
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+
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+
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+AS_IF([test "x$with_libgmp" != xyes -a "x$CONFIG_DEBUG" = xy], [
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+AC_MSG_ERROR([--without-libgmp MUST be used with --disable-debug])
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+])
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AC_ARG_WITH([cli], [AS_HELP_STRING([--without-cli],
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[disable interactive CLI (libreadline support)])],
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@@ -130,4 +140,5 @@ AC_OUTPUT
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echo "
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nft configuration:
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cli support: ${with_cli}
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- enable debugging: ${with_debug}"
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+ enable debugging: ${with_debug}
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+ use shared libgmp: ${with_libgmp}"
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diff --git a/include/expression.h b/include/expression.h
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index 4b96879..7477c3e 100644
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--- a/include/expression.h
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+++ b/include/expression.h
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@@ -2,7 +2,7 @@
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#define NFTABLES_EXPRESSION_H
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#include <stdbool.h>
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-#include <gmp.h>
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+#include <gmputil.h>
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#include <linux/netfilter/nf_tables.h>
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#include <nftables.h>
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diff --git a/include/gmputil.h b/include/gmputil.h
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index 63eb0ba..b9ced6d 100644
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--- a/include/gmputil.h
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+++ b/include/gmputil.h
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@@ -1,9 +1,17 @@
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#ifndef NFTABLES_GMPUTIL_H
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#define NFTABLES_GMPUTIL_H
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+#include <config.h>
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+
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+#ifdef HAVE_LIBGMP
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#include <gmp.h>
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+#else
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+#include <mini-gmp.h>
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+#endif
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+
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#include <asm/byteorder.h>
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+
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enum mpz_word_order {
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MPZ_MSWF = 1,
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MPZ_LSWF = -1,
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@@ -48,4 +56,6 @@ extern void mpz_import_data(mpz_t rop, const void *data,
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unsigned int len);
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extern void mpz_switch_byteorder(mpz_t rop, unsigned int len);
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+extern int mpz_printf(const char *format, const mpz_t value);
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+
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#endif /* NFTABLES_GMPUTIL_H */
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diff --git a/include/utils.h b/include/utils.h
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index 15b2e39..3c436ba 100644
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--- a/include/utils.h
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+++ b/include/utils.h
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@@ -9,14 +9,13 @@
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#include <unistd.h>
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#include <assert.h>
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#include <list.h>
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-#include <gmp.h>
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#define BITS_PER_BYTE 8
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#ifdef DEBUG
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#define pr_debug(fmt, arg...) gmp_printf(fmt, ##arg)
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#else
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-#define pr_debug(fmt, arg...) ({ if (false) gmp_printf(fmt, ##arg); 0; })
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+#define pr_debug(fmt, arg...) ({ if (false) {}; 0; })
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#endif
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#define __fmtstring(x, y) __attribute__((format(printf, x, y)))
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diff --git a/src/Makefile.am b/src/Makefile.am
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index 378424d..099052a 100644
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--- a/src/Makefile.am
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+++ b/src/Makefile.am
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@@ -51,4 +51,8 @@ if BUILD_CLI
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nft_SOURCES += cli.c
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endif
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+if BUILD_MINIGMP
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+nft_SOURCES += mini-gmp.c
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+endif
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+
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nft_LDADD = ${LIBMNL_LIBS} ${LIBNFTNL_LIBS}
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diff --git a/src/ct.c b/src/ct.c
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index 2eb85ea..759e65d 100644
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--- a/src/ct.c
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+++ b/src/ct.c
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@@ -110,7 +110,7 @@ static void ct_label_type_print(const struct expr *expr)
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return;
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}
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/* can happen when connlabel.conf is altered after rules were added */
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- gmp_printf("0x%Zx", expr->value);
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+ mpz_printf("0x%Zx", expr->value);
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}
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static struct error_record *ct_label_type_parse(const struct expr *sym,
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diff --git a/src/datatype.c b/src/datatype.c
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index 4519d87..40ce898 100644
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--- a/src/datatype.c
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+++ b/src/datatype.c
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@@ -186,7 +186,7 @@ void symbol_table_print(const struct symbol_table *tbl,
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static void invalid_type_print(const struct expr *expr)
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{
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- gmp_printf("0x%Zx [invalid type]", expr->value);
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+ mpz_printf("0x%Zx [invalid type]", expr->value);
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}
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const struct datatype invalid_type = {
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@@ -268,18 +268,16 @@ static void integer_type_print(const struct expr *expr)
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if (expr->dtype->basefmt != NULL)
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fmt = expr->dtype->basefmt;
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- gmp_printf(fmt, expr->value);
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+ mpz_printf(fmt, expr->value);
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}
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static struct error_record *integer_type_parse(const struct expr *sym,
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struct expr **res)
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{
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mpz_t v;
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- int len;
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mpz_init(v);
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- if (gmp_sscanf(sym->identifier, "%Zu%n", v, &len) != 1 ||
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- (int)strlen(sym->identifier) != len) {
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+ if (mpz_set_str(v, sym->identifier, 0)) {
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mpz_clear(v);
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return error(&sym->location, "Could not parse %s",
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sym->dtype->desc);
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diff --git a/src/erec.c b/src/erec.c
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index 82543e6..810e9bf 100644
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--- a/src/erec.c
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+++ b/src/erec.c
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@@ -44,6 +44,7 @@ static void erec_destroy(struct error_record *erec)
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xfree(erec);
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}
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+__attribute__((format(printf, 3, 0)))
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struct error_record *erec_vcreate(enum error_record_types type,
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const struct location *loc,
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const char *fmt, va_list ap)
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@@ -55,10 +56,13 @@ struct error_record *erec_vcreate(enum error_record_types type,
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erec->num_locations = 0;
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erec_add_location(erec, loc);
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|
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- gmp_vasprintf(&erec->msg, fmt, ap);
|
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+ if (vasprintf(&erec->msg, fmt, ap) < 0)
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+ erec->msg = NULL;
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+
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return erec;
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}
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+__attribute__((format(printf, 3, 4)))
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struct error_record *erec_create(enum error_record_types type,
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const struct location *loc,
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const char *fmt, ...)
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diff --git a/src/evaluate.c b/src/evaluate.c
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index 0732660..3cb5cca 100644
|
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--- a/src/evaluate.c
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+++ b/src/evaluate.c
|
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@@ -232,9 +232,13 @@ static int expr_evaluate_value(struct eval_ctx *ctx, struct expr **expr)
|
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case TYPE_INTEGER:
|
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mpz_init_bitmask(mask, ctx->ectx.len);
|
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if (mpz_cmp((*expr)->value, mask) > 0) {
|
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+ char *valstr = mpz_get_str(NULL, 10, (*expr)->value);
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+ char *rangestr = mpz_get_str(NULL, 10, mask);
|
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expr_error(ctx->msgs, *expr,
|
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- "Value %Zu exceeds valid range 0-%Zu",
|
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- (*expr)->value, mask);
|
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+ "Value %s exceeds valid range 0-%s",
|
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+ valstr, rangestr);
|
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+ free(valstr);
|
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+ free(rangestr);
|
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mpz_clear(mask);
|
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return -1;
|
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}
|
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diff --git a/src/gmputil.c b/src/gmputil.c
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index cb46445..acbf369 100644
|
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--- a/src/gmputil.c
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+++ b/src/gmputil.c
|
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@@ -14,7 +14,6 @@
|
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#include <stdio.h>
|
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#include <unistd.h>
|
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#include <string.h>
|
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-#include <gmp.h>
|
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|
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#include <nftables.h>
|
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#include <datatype.h>
|
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@@ -148,6 +147,59 @@ void mpz_switch_byteorder(mpz_t rop, unsigned int len)
|
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mpz_import_data(rop, data, BYTEORDER_HOST_ENDIAN, len);
|
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}
|
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|
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+int mpz_printf(const char *f, const mpz_t value)
|
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+{
|
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+ /* minimalistic gmp_printf replacement to format a single mpz_t
|
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+ * using only mini-gmp functions */
|
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+ int n = 0;
|
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+ while (*f) {
|
||||
+ if (*f != '%') {
|
||||
+ if (fputc(*f, stdout) != *f)
|
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+ return -1;
|
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+
|
||||
+ ++n;
|
||||
+ } else {
|
||||
+ unsigned long prec = 0;
|
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+ int base;
|
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+ size_t len;
|
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+ char *str;
|
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+ bool ok;
|
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+
|
||||
+ if (*++f == '.')
|
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+ prec = strtoul(++f, (char**)&f, 10);
|
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+
|
||||
+ if (*f++ != 'Z')
|
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+ return -1;
|
||||
+
|
||||
+ if (*f == 'u')
|
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+ base = 10;
|
||||
+ else if (*f == 'x')
|
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+ base = 16;
|
||||
+ else
|
||||
+ return -1;
|
||||
+
|
||||
+ len = mpz_sizeinbase(value, base);
|
||||
+ while (prec-- > len) {
|
||||
+ if (fputc('0', stdout) != '0')
|
||||
+ return -1;
|
||||
+
|
||||
+ ++n;
|
||||
+ }
|
||||
+
|
||||
+ str = mpz_get_str(NULL, base, value);
|
||||
+ ok = str && fwrite(str, 1, len, stdout) == len;
|
||||
+ free(str);
|
||||
+
|
||||
+ if (!ok)
|
||||
+ return -1;
|
||||
+
|
||||
+ n += len;
|
||||
+ }
|
||||
+ ++f;
|
||||
+ }
|
||||
+ return n;
|
||||
+}
|
||||
+
|
||||
static void *gmp_xrealloc(void *ptr, size_t old_size, size_t new_size)
|
||||
{
|
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return xrealloc(ptr, new_size);
|
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diff --git a/src/parser_bison.y b/src/parser_bison.y
|
||||
index 99dbd08..eb5cf90 100644
|
||||
--- a/src/parser_bison.y
|
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+++ b/src/parser_bison.y
|
||||
@@ -237,7 +237,7 @@ static void location_update(struct location *loc, struct location *rhs, int n)
|
||||
%token OPERATION "operation"
|
||||
|
||||
%token IP "ip"
|
||||
-%token VERSION "version"
|
||||
+%token IPHDRVERSION "version"
|
||||
%token HDRLENGTH "hdrlength"
|
||||
%token TOS "tos"
|
||||
%token LENGTH "length"
|
||||
@@ -1947,7 +1947,7 @@ ip_hdr_expr : IP ip_hdr_field
|
||||
}
|
||||
;
|
||||
|
||||
-ip_hdr_field : VERSION { $$ = IPHDR_VERSION; }
|
||||
+ip_hdr_field : IPHDRVERSION { $$ = IPHDR_VERSION; }
|
||||
| HDRLENGTH { $$ = IPHDR_HDRLENGTH; }
|
||||
| TOS { $$ = IPHDR_TOS; }
|
||||
| LENGTH { $$ = IPHDR_LENGTH; }
|
||||
@@ -1994,7 +1994,7 @@ ip6_hdr_expr : IP6 ip6_hdr_field
|
||||
}
|
||||
;
|
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|
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-ip6_hdr_field : VERSION { $$ = IP6HDR_VERSION; }
|
||||
+ip6_hdr_field : IPHDRVERSION { $$ = IP6HDR_VERSION; }
|
||||
| PRIORITY { $$ = IP6HDR_PRIORITY; }
|
||||
| FLOWLABEL { $$ = IP6HDR_FLOWLABEL; }
|
||||
| LENGTH { $$ = IP6HDR_LENGTH; }
|
||||
diff --git a/src/scanner.l b/src/scanner.l
|
||||
index ed87da6..92b6a10 100644
|
||||
--- a/src/scanner.l
|
||||
+++ b/src/scanner.l
|
||||
@@ -349,7 +349,7 @@ addrstring ({macaddr}|{ip4addr}|{ip6addr})
|
||||
"operation" { return OPERATION; }
|
||||
|
||||
"ip" { return IP; }
|
||||
-"version" { return VERSION; }
|
||||
+"version" { return IPHDRVERSION; }
|
||||
"hdrlength" { return HDRLENGTH; }
|
||||
"tos" { return TOS; }
|
||||
"length" { return LENGTH; }
|
||||
--
|
||||
2.1.3
|
||||
|
@ -0,0 +1,55 @@ |
||||
From 20417d50a2f2c6d9ed1b22ca1195214d0c2c402d Mon Sep 17 00:00:00 2001
|
||||
From: Steven Barth <cyrus@openwrt.org>
|
||||
Date: Mon, 15 Dec 2014 13:58:55 +0100
|
||||
Subject: [PATCH 1/5] parser: rename VERSION token to IPHDRVERSION
|
||||
|
||||
A token name of VERSION results in a macro being defined
|
||||
with the same name. This prevents inclusion of config.h
|
||||
in commonly used headers.
|
||||
|
||||
Signed-off-by: Steven Barth <cyrus@openwrt.org>
|
||||
---
|
||||
src/parser_bison.y | 6 +++---
|
||||
src/scanner.l | 2 +-
|
||||
2 files changed, 4 insertions(+), 4 deletions(-)
|
||||
|
||||
--- a/src/parser_bison.y
|
||||
+++ b/src/parser_bison.y
|
||||
@@ -237,7 +237,7 @@ static void location_update(struct locat
|
||||
%token OPERATION "operation"
|
||||
|
||||
%token IP "ip"
|
||||
-%token VERSION "version"
|
||||
+%token IPHDRVERSION "version"
|
||||
%token HDRLENGTH "hdrlength"
|
||||
%token TOS "tos"
|
||||
%token LENGTH "length"
|
||||
@@ -1947,7 +1947,7 @@ ip_hdr_expr : IP ip_hdr_field
|
||||
}
|
||||
;
|
||||
|
||||
-ip_hdr_field : VERSION { $$ = IPHDR_VERSION; }
|
||||
+ip_hdr_field : IPHDRVERSION { $$ = IPHDR_VERSION; }
|
||||
| HDRLENGTH { $$ = IPHDR_HDRLENGTH; }
|
||||
| TOS { $$ = IPHDR_TOS; }
|
||||
| LENGTH { $$ = IPHDR_LENGTH; }
|
||||
@@ -1994,7 +1994,7 @@ ip6_hdr_expr : IP6 ip6_hdr_field
|
||||
}
|
||||
;
|
||||
|
||||
-ip6_hdr_field : VERSION { $$ = IP6HDR_VERSION; }
|
||||
+ip6_hdr_field : IPHDRVERSION { $$ = IP6HDR_VERSION; }
|
||||
| PRIORITY { $$ = IP6HDR_PRIORITY; }
|
||||
| FLOWLABEL { $$ = IP6HDR_FLOWLABEL; }
|
||||
| LENGTH { $$ = IP6HDR_LENGTH; }
|
||||
--- a/src/scanner.l
|
||||
+++ b/src/scanner.l
|
||||
@@ -349,7 +349,7 @@ addrstring ({macaddr}|{ip4addr}|{ip6addr
|
||||
"operation" { return OPERATION; }
|
||||
|
||||
"ip" { return IP; }
|
||||
-"version" { return VERSION; }
|
||||
+"version" { return IPHDRVERSION; }
|
||||
"hdrlength" { return HDRLENGTH; }
|
||||
"tos" { return TOS; }
|
||||
"length" { return LENGTH; }
|
@ -0,0 +1,28 @@ |
||||
From 23e8958a5e539f682be4cbdf5196aa2014c7e295 Mon Sep 17 00:00:00 2001
|
||||
From: Steven Barth <cyrus@openwrt.org>
|
||||
Date: Mon, 15 Dec 2014 14:09:27 +0100
|
||||
Subject: [PATCH 2/5] datatype: use mpz_set_str instead of gmp_sscanf
|
||||
|
||||
This simplifies the integer parsing logic and restricts it to
|
||||
functions being part of the mini-gmp subset.
|
||||
|
||||
Signed-off-by: Steven Barth <cyrus@openwrt.org>
|
||||
---
|
||||
src/datatype.c | 4 +---
|
||||
1 file changed, 1 insertion(+), 3 deletions(-)
|
||||
|
||||
--- a/src/datatype.c
|
||||
+++ b/src/datatype.c
|
||||
@@ -275,11 +275,9 @@ static struct error_record *integer_type
|
||||
struct expr **res)
|
||||
{
|
||||
mpz_t v;
|
||||
- int len;
|
||||
|
||||
mpz_init(v);
|
||||
- if (gmp_sscanf(sym->identifier, "%Zu%n", v, &len) != 1 ||
|
||||
- (int)strlen(sym->identifier) != len) {
|
||||
+ if (mpz_set_str(v, sym->identifier, 0)) {
|
||||
mpz_clear(v);
|
||||
return error(&sym->location, "Could not parse %s",
|
||||
sym->dtype->desc);
|
@ -0,0 +1,58 @@ |
||||
From ee23bda1e4a85243fa02dc712f0f323e366dbf8c Mon Sep 17 00:00:00 2001
|
||||
From: Steven Barth <cyrus@openwrt.org>
|
||||
Date: Mon, 15 Dec 2014 14:14:46 +0100
|
||||
Subject: [PATCH 3/5] erec: use stdio vasprintf instead of gmp_vasprintf
|
||||
|
||||
Use stdio's vasprintf instead of gmp_vasprintf which is not part
|
||||
of the mini-gmp function subset. Furthermore convert the only
|
||||
gmp-specific user and allow the compiler to verify format-strings.
|
||||
|
||||
Signed-off-by: Steven Barth <cyrus@openwrt.org>
|
||||
---
|
||||
src/erec.c | 6 +++++-
|
||||
src/evaluate.c | 8 ++++++--
|
||||
2 files changed, 11 insertions(+), 3 deletions(-)
|
||||
|
||||
--- a/src/erec.c
|
||||
+++ b/src/erec.c
|
||||
@@ -44,6 +44,7 @@ static void erec_destroy(struct error_re
|
||||
xfree(erec);
|
||||
}
|
||||
|
||||
+__attribute__((format(printf, 3, 0)))
|
||||
struct error_record *erec_vcreate(enum error_record_types type,
|
||||
const struct location *loc,
|
||||
const char *fmt, va_list ap)
|
||||
@@ -55,10 +56,13 @@ struct error_record *erec_vcreate(enum e
|
||||
erec->num_locations = 0;
|
||||
erec_add_location(erec, loc);
|
||||
|
||||
- gmp_vasprintf(&erec->msg, fmt, ap);
|
||||
+ if (vasprintf(&erec->msg, fmt, ap) < 0)
|
||||
+ erec->msg = NULL;
|
||||
+
|
||||
return erec;
|
||||
}
|
||||
|
||||
+__attribute__((format(printf, 3, 4)))
|
||||
struct error_record *erec_create(enum error_record_types type,
|
||||
const struct location *loc,
|
||||
const char *fmt, ...)
|
||||
--- a/src/evaluate.c
|
||||
+++ b/src/evaluate.c
|
||||
@@ -232,9 +232,13 @@ static int expr_evaluate_value(struct ev
|
||||
case TYPE_INTEGER:
|
||||
mpz_init_bitmask(mask, ctx->ectx.len);
|
||||
if (mpz_cmp((*expr)->value, mask) > 0) {
|
||||
+ char *valstr = mpz_get_str(NULL, 10, (*expr)->value);
|
||||
+ char *rangestr = mpz_get_str(NULL, 10, mask);
|
||||
expr_error(ctx->msgs, *expr,
|
||||
- "Value %Zu exceeds valid range 0-%Zu",
|
||||
- (*expr)->value, mask);
|
||||
+ "Value %s exceeds valid range 0-%s",
|
||||
+ valstr, rangestr);
|
||||
+ free(valstr);
|
||||
+ free(rangestr);
|
||||
mpz_clear(mask);
|
||||
return -1;
|
||||
}
|
@ -0,0 +1,186 @@ |
||||
From d73f1b630848fb7d90f51938e3c75a42ad947c26 Mon Sep 17 00:00:00 2001
|
||||
From: Steven Barth <cyrus@openwrt.org>
|
||||
Date: Mon, 15 Dec 2014 14:26:34 +0100
|
||||
Subject: [PATCH 5/5] build: add --without-libgmp switch to disable use of
|
||||
shared libgmp
|
||||
|
||||
This disables linking the >400 KB big libgmp and replace it with
|
||||
the builtin mini-gmp which only increases size by ~30KB.
|
||||
|
||||
Signed-off-by: Steven Barth <cyrus@openwrt.org>
|
||||
---
|
||||
configure.ac | 17 +++++++++++++---
|
||||
include/expression.h | 2 +-
|
||||
include/gmputil.h | 10 +++++++++
|
||||
include/utils.h | 4 ++--
|
||||
src/Makefile.am | 4 ++++
|
||||
src/gmputil.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++--
|
||||
6 files changed, 86 insertions(+), 8 deletions(-)
|
||||
|
||||
--- a/configure.ac
|
||||
+++ b/configure.ac
|
||||
@@ -73,8 +73,18 @@ AM_CONDITIONAL([BUILD_PDF], [test "$DBLA
|
||||
PKG_CHECK_MODULES([LIBMNL], [libmnl >= 1.0.3])
|
||||
PKG_CHECK_MODULES([LIBNFTNL], [libnftnl >= 1.0.2])
|
||||
|
||||
-AC_CHECK_LIB([gmp], [__gmpz_init], ,
|
||||
- AC_MSG_ERROR([No suitable version of libgmp found]))
|
||||
+AC_ARG_WITH([libgmp], [AS_HELP_STRING([--without-libgmp],
|
||||
+ [Disable libgmp support (use builtin mini-gmp)])], [],
|
||||
+ [with_libgmp=yes])
|
||||
+AS_IF([test "x$with_libgmp" != xno], [
|
||||
+AC_CHECK_LIB([gmp],[__gmpz_init], , AC_MSG_ERROR([No suitable version of libgmp found]))
|
||||
+])
|
||||
+AM_CONDITIONAL([BUILD_MINIGMP], [test "x$with_libgmp" == xno])
|
||||
+
|
||||
+
|
||||
+AS_IF([test "x$with_libgmp" != xyes -a "x$CONFIG_DEBUG" = xy], [
|
||||
+AC_MSG_ERROR([--without-libgmp MUST be used with --disable-debug])
|
||||
+])
|
||||
|
||||
AC_ARG_WITH([cli], [AS_HELP_STRING([--without-cli],
|
||||
[disable interactive CLI (libreadline support)])],
|
||||
@@ -130,4 +140,5 @@ AC_OUTPUT
|
||||
echo "
|
||||
nft configuration:
|
||||
cli support: ${with_cli}
|
||||
- enable debugging: ${with_debug}"
|
||||
+ enable debugging: ${with_debug}
|
||||
+ use shared libgmp: ${with_libgmp}"
|
||||
--- a/include/expression.h
|
||||
+++ b/include/expression.h
|
||||
@@ -2,7 +2,7 @@
|
||||
#define NFTABLES_EXPRESSION_H
|
||||
|
||||
#include <stdbool.h>
|
||||
-#include <gmp.h>
|
||||
+#include <gmputil.h>
|
||||
#include <linux/netfilter/nf_tables.h>
|
||||
|
||||
#include <nftables.h>
|
||||
--- a/include/gmputil.h
|
||||
+++ b/include/gmputil.h
|
||||
@@ -1,7 +1,17 @@
|
||||
#ifndef NFTABLES_GMPUTIL_H
|
||||
#define NFTABLES_GMPUTIL_H
|
||||
|
||||
+#include <config.h>
|
||||
+
|
||||
+#ifdef HAVE_LIBGMP
|
||||
#include <gmp.h>
|
||||
+#else
|
||||
+#include <mini-gmp.h>
|
||||
+/* mini-gmp doesn't come with gmp_printf, so we use our own minimal variant */
|
||||
+extern int mpz_printf(const char *format, const mpz_t value);
|
||||
+#define gmp_printf mpz_printf
|
||||
+#endif
|
||||
+
|
||||
#include <asm/byteorder.h>
|
||||
|
||||
enum mpz_word_order {
|
||||
--- a/include/utils.h
|
||||
+++ b/include/utils.h
|
||||
@@ -9,14 +9,14 @@
|
||||
#include <unistd.h>
|
||||
#include <assert.h>
|
||||
#include <list.h>
|
||||
-#include <gmp.h>
|
||||
+#include <gmputil.h>
|
||||
|
||||
#define BITS_PER_BYTE 8
|
||||
|
||||
#ifdef DEBUG
|
||||
#define pr_debug(fmt, arg...) gmp_printf(fmt, ##arg)
|
||||
#else
|
||||
-#define pr_debug(fmt, arg...) ({ if (false) gmp_printf(fmt, ##arg); 0; })
|
||||
+#define pr_debug(fmt, arg...) ({ if (false) {}; 0; })
|
||||
#endif
|
||||
|
||||
#define __fmtstring(x, y) __attribute__((format(printf, x, y)))
|
||||
--- a/src/Makefile.am
|
||||
+++ b/src/Makefile.am
|
||||
@@ -51,4 +51,8 @@ if BUILD_CLI
|
||||
nft_SOURCES += cli.c
|
||||
endif
|
||||
|
||||
+if BUILD_MINIGMP
|
||||
+nft_SOURCES += mini-gmp.c
|
||||
+endif
|
||||
+
|
||||
nft_LDADD = ${LIBMNL_LIBS} ${LIBNFTNL_LIBS}
|
||||
--- a/src/gmputil.c
|
||||
+++ b/src/gmputil.c
|
||||
@@ -14,11 +14,9 @@
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
-#include <gmp.h>
|
||||
|
||||
#include <nftables.h>
|
||||
#include <datatype.h>
|
||||
-#include <gmputil.h>
|
||||
#include <utils.h>
|
||||
|
||||
void mpz_bitmask(mpz_t rop, unsigned int width)
|
||||
@@ -148,6 +146,61 @@ void mpz_switch_byteorder(mpz_t rop, uns
|
||||
mpz_import_data(rop, data, BYTEORDER_HOST_ENDIAN, len);
|
||||
}
|
||||
|
||||
+#ifndef HAVE_LIBGMP
|
||||
+/* mini-gmp doesn't have a gmp_printf so we use our own minimal
|
||||
+ * variant here which is able to format a single mpz_t */
|
||||
+int mpz_printf(const char *f, const mpz_t value)
|
||||
+{
|
||||
+ int n = 0;
|
||||
+ while (*f) {
|
||||
+ if (*f != '%') {
|
||||
+ if (fputc(*f, stdout) != *f)
|
||||
+ return -1;
|
||||
+
|
||||
+ ++n;
|
||||
+ } else {
|
||||
+ unsigned long prec = 0;
|
||||
+ int base;
|
||||
+ size_t len;
|
||||
+ char *str;
|
||||
+ bool ok;
|
||||
+
|
||||
+ if (*++f == '.')
|
||||
+ prec = strtoul(++f, (char**)&f, 10);
|
||||
+
|
||||
+ if (*f++ != 'Z')
|
||||
+ return -1;
|
||||
+
|
||||
+ if (*f == 'u')
|
||||
+ base = 10;
|
||||
+ else if (*f == 'x')
|
||||
+ base = 16;
|
||||
+ else
|
||||
+ return -1;
|
||||
+
|
||||
+ len = mpz_sizeinbase(value, base);
|
||||
+ while (prec-- > len) {
|
||||
+ if (fputc('0', stdout) != '0')
|
||||
+ return -1;
|
||||
+
|
||||
+ ++n;
|
||||
+ }
|
||||
+
|
||||
+ str = mpz_get_str(NULL, base, value);
|
||||
+ ok = str && fwrite(str, 1, len, stdout) == len;
|
||||
+ free(str);
|
||||
+
|
||||
+ if (!ok)
|
||||
+ return -1;
|
||||
+
|
||||
+ n += len;
|
||||
+ }
|
||||
+ ++f;
|
||||
+ }
|
||||
+ return n;
|
||||
+}
|
||||
+#endif
|
||||
+
|
||||
static void *gmp_xrealloc(void *ptr, size_t old_size, size_t new_size)
|
||||
{
|
||||
return xrealloc(ptr, new_size);
|
Loading…
Reference in new issue