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grub2/0169-libtasn1-changes-for-grub-compatibility.patch
Adam Williamson 5e72956199 Revert "Use my sort patch instead", fix BLS ostree detection 
This reverts commit 93004a8494,
because it broke Rawhide. It also tries to fixes BLS ostree
detection to work in chroots (e.g. during installation) by also
checking for /ostree/repo.
2022-03-22 18:32:24 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Daniel Axtens <dja@axtens.net>
Date: Fri, 1 May 2020 20:44:29 +1000
Subject: [PATCH] libtasn1: changes for grub compatibility
Do a few things to make libtasn1 compile as part of grub:
- replace strcat. grub removed strcat so replace it with the appropriate
calls to memcpy and strlen.
- replace c_isdigit with grub_isdigit (and don't import c-ctype from
gnulib) grub_isdigit provides the same functionality as c_isdigit: it
determines if the input is an ASCII digit without regard for locale.
- replace GL_ATTRIBUTE_PURE with __attribute__((pure)) which been
supported since gcc-2.96. This avoids messing around with gnulib.
- adjust libtasn1.h: drop the ASN1_API logic, it's not needed for our
modules. Unconditionally support const and pure attributes and adjust
header paths.
- adjust header paths to "grub/libtasn1.h".
- replace a 64 bit division with a call to grub_divmod64, preventing
creation of __udivdi3 calls on 32 bit platforms.
Signed-off-by: Daniel Axtens <dja@axtens.net>
---
grub-core/lib/libtasn1/lib/decoding.c | 11 ++++++-----
grub-core/lib/libtasn1/lib/element.c | 3 ++-
grub-core/lib/libtasn1/lib/gstr.c | 4 ++--
grub-core/lib/libtasn1/lib/parser_aux.c | 7 ++++---
grub-core/lib/libtasn1/lib/int.h | 4 ++--
include/grub/libtasn1.h | 26 ++++++--------------------
6 files changed, 22 insertions(+), 33 deletions(-)
diff --git a/grub-core/lib/libtasn1/lib/decoding.c b/grub-core/lib/libtasn1/lib/decoding.c
index 42f9a92b5d4..7856858b272 100644
--- a/grub-core/lib/libtasn1/lib/decoding.c
+++ b/grub-core/lib/libtasn1/lib/decoding.c
@@ -32,7 +32,8 @@
#include <element.h>
#include <limits.h>
#include <intprops.h>
-#include <c-ctype.h>
+
+#define c_isdigit grub_isdigit
#ifdef DEBUG
# define warn() fprintf(stderr, "%s: %d\n", __func__, __LINE__)
@@ -2008,8 +2009,8 @@ asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
(p2->type & CONST_ASSIGN))
{
strcpy (name, definitions->name);
- strcat (name, ".");
- strcat (name, p2->name);
+ memcpy (name + strlen(name), ".", sizeof(" . "));
+ memcpy (name + strlen(name), p2->name, strlen(p2->name) + 1);
len = sizeof (value);
result = asn1_read_value (definitions, name, value, &len);
@@ -2026,8 +2027,8 @@ asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
if (p2)
{
strcpy (name, definitions->name);
- strcat (name, ".");
- strcat (name, p2->name);
+ memcpy (name + strlen(name), ".", sizeof(" . "));
+ memcpy (name + strlen(name), p2->name, strlen(p2->name) + 1);
result = asn1_create_element (definitions, name, &aux);
if (result == ASN1_SUCCESS)
diff --git a/grub-core/lib/libtasn1/lib/element.c b/grub-core/lib/libtasn1/lib/element.c
index 539008d8e94..ed761ff56bd 100644
--- a/grub-core/lib/libtasn1/lib/element.c
+++ b/grub-core/lib/libtasn1/lib/element.c
@@ -30,9 +30,10 @@
#include "parser_aux.h"
#include <gstr.h>
#include "structure.h"
-#include "c-ctype.h"
#include "element.h"
+#define c_isdigit grub_isdigit
+
void
_asn1_hierarchical_name (asn1_node_const node, char *name, int name_size)
{
diff --git a/grub-core/lib/libtasn1/lib/gstr.c b/grub-core/lib/libtasn1/lib/gstr.c
index e91a3a151c0..e33875c2c7c 100644
--- a/grub-core/lib/libtasn1/lib/gstr.c
+++ b/grub-core/lib/libtasn1/lib/gstr.c
@@ -36,13 +36,13 @@ _asn1_str_cat (char *dest, size_t dest_tot_size, const char *src)
if (dest_tot_size - dest_size > str_size)
{
- strcat (dest, src);
+ memcpy (dest + dest_size, src, str_size + 1);
}
else
{
if (dest_tot_size - dest_size > 0)
{
- strncat (dest, src, (dest_tot_size - dest_size) - 1);
+ memcpy (dest + dest_size, src, (dest_tot_size - dest_size) - 1);
dest[dest_tot_size - 1] = 0;
}
}
diff --git a/grub-core/lib/libtasn1/lib/parser_aux.c b/grub-core/lib/libtasn1/lib/parser_aux.c
index d5dbbf8765d..89c9be69dc2 100644
--- a/grub-core/lib/libtasn1/lib/parser_aux.c
+++ b/grub-core/lib/libtasn1/lib/parser_aux.c
@@ -26,7 +26,8 @@
#include "gstr.h"
#include "structure.h"
#include "element.h"
-#include "c-ctype.h"
+
+#define c_isdigit grub_isdigit
char _asn1_identifierMissing[ASN1_MAX_NAME_SIZE + 1]; /* identifier name not found */
@@ -40,7 +41,7 @@ char _asn1_identifierMissing[ASN1_MAX_NAME_SIZE + 1]; /* identifier name not fou
#ifdef __clang__
__attribute__((no_sanitize("integer")))
#endif
-_GL_ATTRIBUTE_PURE
+__attribute__((__pure__))
static unsigned int
_asn1_hash_name (const char *x)
{
@@ -634,7 +635,7 @@ _asn1_ltostr (int64_t v, char str[LTOSTR_MAX_SIZE])
count = 0;
do
{
- d = val / 10;
+ d = grub_divmod64(val, 10, NULL);
r = val - d * 10;
temp[start + count] = '0' + (char) r;
count++;
diff --git a/grub-core/lib/libtasn1/lib/int.h b/grub-core/lib/libtasn1/lib/int.h
index ea1625786c1..4a568efee9c 100644
--- a/grub-core/lib/libtasn1/lib/int.h
+++ b/grub-core/lib/libtasn1/lib/int.h
@@ -35,7 +35,7 @@
#include <sys/types.h>
#endif
-#include <libtasn1.h>
+#include "grub/libtasn1.h"
#define ASN1_SMALL_VALUE_SIZE 16
@@ -115,7 +115,7 @@ extern const tag_and_class_st _asn1_tags[];
#define _asn1_strtoul(n,e,b) strtoul((const char *) n, e, b)
#define _asn1_strcmp(a,b) strcmp((const char *)a, (const char *)b)
#define _asn1_strcpy(a,b) strcpy((char *)a, (const char *)b)
-#define _asn1_strcat(a,b) strcat((char *)a, (const char *)b)
+#define _asn1_strcat(a,b) memcpy((char *)a + strlen((const char *)a), (const char *)b, strlen((const char *)b) + 1)
#if SIZEOF_UNSIGNED_LONG_INT == 8
# define _asn1_strtou64(n,e,b) strtoul((const char *) n, e, b)
diff --git a/include/grub/libtasn1.h b/include/grub/libtasn1.h
index 785eda2ae3f..28dbf16c4e0 100644
--- a/include/grub/libtasn1.h
+++ b/include/grub/libtasn1.h
@@ -38,29 +38,15 @@
#ifndef LIBTASN1_H
#define LIBTASN1_H
-#ifndef ASN1_API
-#if defined ASN1_BUILDING && defined HAVE_VISIBILITY && HAVE_VISIBILITY
-#define ASN1_API __attribute__((__visibility__("default")))
-#elif defined ASN1_BUILDING && defined _MSC_VER && ! defined ASN1_STATIC
-#define ASN1_API __declspec(dllexport)
-#elif defined _MSC_VER && ! defined ASN1_STATIC
-#define ASN1_API __declspec(dllimport)
-#else
+/* grub: ASN1_API is not used */
#define ASN1_API
-#endif
-#endif
-#ifdef __GNUC__
-# define __LIBTASN1_CONST__ __attribute__((const))
-# define __LIBTASN1_PURE__ __attribute__((pure))
-#else
-# define __LIBTASN1_CONST__
-# define __LIBTASN1_PURE__
-#endif
+/* grub: all our supported compilers support these attributes */
+#define __LIBTASN1_CONST__ __attribute__((const))
+#define __LIBTASN1_PURE__ __attribute__((pure))
-#include <sys/types.h>
-#include <time.h>
-#include <stdio.h> /* for FILE* */
+#include <grub/types.h>
+#include <grub/time.h>
#ifdef __cplusplus
extern "C"
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