diff options
Diffstat (limited to 'package/network/utils/nftables/patches/201-make-nftables-usable-with-mini-gmp.patch')
| -rw-r--r-- | package/network/utils/nftables/patches/201-make-nftables-usable-with-mini-gmp.patch | 357 |
1 files changed, 0 insertions, 357 deletions
diff --git a/package/network/utils/nftables/patches/201-make-nftables-usable-with-mini-gmp.patch b/package/network/utils/nftables/patches/201-make-nftables-usable-with-mini-gmp.patch deleted file mode 100644 index 4533e3111d..0000000000 --- a/package/network/utils/nftables/patches/201-make-nftables-usable-with-mini-gmp.patch +++ /dev/null @@ -1,357 +0,0 @@ -From d559314e3e3debe1ff8c2c1372701df6154a53ef Mon Sep 17 00:00:00 2001 -From: Steven Barth <steven@midlink.org> -Date: Mon, 15 Dec 2014 10:13:39 +0100 -Subject: [PATCH 2/3] build: make nftables usable with mini-gmp - -libgmp usually compiles to >400KB which can put a burden on embedded -device firmware especially if libgmp isn't used for other purposes. -mini-gmp in contrast adds only ~30KB to the nft-binary itself. - -However mini-gmp does not support gmp_sscanf and gmp_printf. - -This patch: -* Adds a configure flag --without-libgmp to select mini-gmp -* Replaces the single gmp_sscanf occurence with mpz_set_str -* Replaces calls to gmp_printf outside of pr_debug with - a minimalistic mpz_printf usable to format one mpz_t -* Replaces gmp_vasprintf in erec_vcreate with vasprintf - and rewrites the single user of the gmp format-flags -* Changes the parser token VERSION to IPHDRVERSION to avoid - clashes with the VERSION-define in config.h - -Signed-off-by: Steven Barth <cyrus@openwrt.org> ---- - configure.ac | 17 ++++++++++++++--- - include/expression.h | 2 +- - include/gmputil.h | 10 ++++++++++ - include/utils.h | 3 +-- - src/Makefile.am | 4 ++++ - src/ct.c | 2 +- - src/datatype.c | 8 +++----- - src/erec.c | 6 +++++- - src/evaluate.c | 8 ++++++-- - src/gmputil.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++- - src/parser_bison.y | 6 +++--- - src/scanner.l | 2 +- - 12 files changed, 102 insertions(+), 20 deletions(-) - -diff --git a/configure.ac b/configure.ac -index b55b2b1..1e3729d 100644 ---- a/configure.ac -+++ b/configure.ac -@@ -73,8 +73,18 @@ AM_CONDITIONAL([BUILD_PDF], [test "$DBLATEX" == "found"]) - PKG_CHECK_MODULES([LIBMNL], [libmnl >= 1.0.3]) - PKG_CHECK_MODULES([LIBNFTNL], [libnftnl >= 1.0.2]) - --AC_CHECK_LIB([gmp], [__gmpz_init], , -- AC_MSG_ERROR([No suitable version of libgmp found])) -+AC_ARG_WITH([libgmp], [AS_HELP_STRING([--without-libgmp], -+ [Disable libgmp support (use builtin mini-gmp)])], [], -+ [with_libgmp=yes]) -+AS_IF([test "x$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}" -diff --git a/include/expression.h b/include/expression.h -index 4b96879..7477c3e 100644 ---- 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> -diff --git a/include/gmputil.h b/include/gmputil.h -index 63eb0ba..b9ced6d 100644 ---- a/include/gmputil.h -+++ b/include/gmputil.h -@@ -1,9 +1,17 @@ - #ifndef NFTABLES_GMPUTIL_H - #define NFTABLES_GMPUTIL_H - -+#include <config.h> -+ -+#ifdef HAVE_LIBGMP - #include <gmp.h> -+#else -+#include <mini-gmp.h> -+#endif -+ - #include <asm/byteorder.h> - -+ - enum mpz_word_order { - MPZ_MSWF = 1, - MPZ_LSWF = -1, -@@ -48,4 +56,6 @@ extern void mpz_import_data(mpz_t rop, const void *data, - unsigned int len); - extern void mpz_switch_byteorder(mpz_t rop, unsigned int len); - -+extern int mpz_printf(const char *format, const mpz_t value); -+ - #endif /* NFTABLES_GMPUTIL_H */ -diff --git a/include/utils.h b/include/utils.h -index 15b2e39..3c436ba 100644 ---- a/include/utils.h -+++ b/include/utils.h -@@ -9,14 +9,13 @@ - #include <unistd.h> - #include <assert.h> - #include <list.h> --#include <gmp.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))) -diff --git a/src/Makefile.am b/src/Makefile.am -index 378424d..099052a 100644 ---- 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} -diff --git a/src/ct.c b/src/ct.c -index 2eb85ea..759e65d 100644 ---- a/src/ct.c -+++ b/src/ct.c -@@ -110,7 +110,7 @@ static void ct_label_type_print(const struct expr *expr) - return; - } - /* can happen when connlabel.conf is altered after rules were added */ -- gmp_printf("0x%Zx", expr->value); -+ mpz_printf("0x%Zx", expr->value); - } - - static struct error_record *ct_label_type_parse(const struct expr *sym, -diff --git a/src/datatype.c b/src/datatype.c -index 4519d87..40ce898 100644 ---- a/src/datatype.c -+++ b/src/datatype.c -@@ -186,7 +186,7 @@ void symbol_table_print(const struct symbol_table *tbl, - - static void invalid_type_print(const struct expr *expr) - { -- gmp_printf("0x%Zx [invalid type]", expr->value); -+ mpz_printf("0x%Zx [invalid type]", expr->value); - } - - const struct datatype invalid_type = { -@@ -268,18 +268,16 @@ static void integer_type_print(const struct expr *expr) - - if (expr->dtype->basefmt != NULL) - fmt = expr->dtype->basefmt; -- gmp_printf(fmt, expr->value); -+ mpz_printf(fmt, expr->value); - } - - static struct error_record *integer_type_parse(const struct expr *sym, - 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); -diff --git a/src/erec.c b/src/erec.c -index 82543e6..810e9bf 100644 ---- a/src/erec.c -+++ b/src/erec.c -@@ -44,6 +44,7 @@ static void erec_destroy(struct error_record *erec) - 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 error_record_types type, - 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, ...) -diff --git a/src/evaluate.c b/src/evaluate.c -index 0732660..3cb5cca 100644 ---- a/src/evaluate.c -+++ b/src/evaluate.c -@@ -232,9 +232,13 @@ static int expr_evaluate_value(struct eval_ctx *ctx, struct expr **expr) - 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; - } -diff --git a/src/gmputil.c b/src/gmputil.c -index cb46445..acbf369 100644 ---- a/src/gmputil.c -+++ b/src/gmputil.c -@@ -14,7 +14,6 @@ - #include <stdio.h> - #include <unistd.h> - #include <string.h> --#include <gmp.h> - - #include <nftables.h> - #include <datatype.h> -@@ -148,6 +147,59 @@ void mpz_switch_byteorder(mpz_t rop, unsigned int len) - mpz_import_data(rop, data, BYTEORDER_HOST_ENDIAN, len); - } - -+int mpz_printf(const char *f, const mpz_t value) -+{ -+ /* minimalistic gmp_printf replacement to format a single mpz_t -+ * using only mini-gmp functions */ -+ 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; -+} -+ - static void *gmp_xrealloc(void *ptr, size_t old_size, size_t new_size) - { - return xrealloc(ptr, new_size); -diff --git a/src/parser_bison.y b/src/parser_bison.y -index 99dbd08..eb5cf90 100644 ---- a/src/parser_bison.y -+++ 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 { $$ = IPHDR_LENGTH; } -@@ -1994,7 +1994,7 @@ ip6_hdr_expr : IP6 ip6_hdr_field - } - ; - --ip6_hdr_field : VERSION { $$ = 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 - |