11 Commits

7 changed files with 41 additions and 29 deletions

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@@ -1,4 +1,4 @@
cmake_minimum_required(VERSION 3.5)
cmake_minimum_required(VERSION 3.5...3.18)
project(patchelfcrc LANGUAGES C)
@@ -28,12 +28,23 @@ pkg_check_modules(ELF REQUIRED libelf)
find_package(Doxygen)
find_package(LibXml2 REQUIRED)
add_subdirectory(man)
aux_source_directory("src" CFILES)
set(GEN_HEADER_PATH "${CMAKE_CURRENT_BINARY_DIR}/include/generated")
if (DEFINED NO_VERSION_INFO)
add_custom_target(
version-header
COMMAND
mkdir -p ${GEN_HEADER_PATH} && bash "${CMAKE_CURRENT_SOURCE_DIR}/gen_version_header.sh" "${GEN_HEADER_PATH}/version.h" "dummy"
WORKING_DIRECTORY
${CMAKE_CURRENT_SOURCE_DIR}
COMMENT "Generating version header dummy"
)
set (NO_VERSION_INFO true)
message("${BoldMagenta}No Version Information will be built${ColorReset}")
else(DEFINED NO_VERSION_INFO)
add_custom_target(
version-header
COMMAND
@@ -42,6 +53,8 @@ add_custom_target(
${CMAKE_CURRENT_SOURCE_DIR}
COMMENT "Generating version header"
)
add_subdirectory(man)
endif(DEFINED NO_VERSION_INFO)
add_custom_target(schema-header DEPENDS "${GEN_HEADER_PATH}/schema-blob.h")
add_custom_command(
@@ -66,9 +79,10 @@ target_link_directories(${PROJECT_NAME} PRIVATE ${ELF_LIBRARY_DIRS} ${LIBXML2_LI
target_include_directories(${PROJECT_NAME} PRIVATE ${ELF_INCLUDE_DIRS})
target_include_directories(${PROJECT_NAME} PRIVATE "${CMAKE_CURRENT_BINARY_DIR}/include")
target_include_directories(${PROJECT_NAME} PRIVATE "include")
add_dependencies(${PROJECT_NAME} version-header schema-header)
add_dependencies(${PROJECT_NAME} schema-header)
add_dependencies(${PROJECT_NAME} version-header)
if (DOXYGEN_FOUND)
if (DOXYGEN_FOUND AND (NOT (DEFINED NO_VERSION_INFO)))
set(DOXYFILE_SRC "${CMAKE_CURRENT_SOURCE_DIR}/doxygen/Doxyfile.in")
set(DOXYFILE_DEST "${CMAKE_CURRENT_BINARY_DIR}/Doxyfile")
configure_file(${DOXYFILE_SRC} ${DOXYFILE_DEST} @ONLY)
@@ -87,7 +101,7 @@ if (DOXYGEN_FOUND)
WORKING_DIRECTORY
${CMAKE_CURRENT_SOURCE_DIR}
)
else (DOXYGEN_FOUND)
else (DOXYGEN_FOUND AND (NOT (DEFINED NO_VERSION_INFO)))
message("${BoldMagenta}Doxygen needs to be installed to generate the doxygen documentation${ColorReset}")
message("${BoldMagenta}doxygen target will not be available${ColorReset}")
endif (DOXYGEN_FOUND)
endif (DOXYGEN_FOUND AND (NOT (DEFINED NO_VERSION_INFO)))

View File

@@ -4,7 +4,12 @@ if [[ -z $1 ]]; then
exit -1;
fi
ver=`git describe --tags --always --dirty`
if [[ "$2" == "dummy" ]]; then
ver="v0.0.0-undefined"
else
ver=`git describe --tags --always --dirty`
fi
echo "#ifndef _VERSION_GENERATED_H_" > $1
echo "#define _VERSION_GENERATED_H_" >> $1
echo "#define GIT_VERSION_STRING \"$ver\"" >> $1

View File

@@ -61,7 +61,7 @@
: Export the calculated files to an XML file *XMLFILE*.
**--import**=*XMLFILE*
: Import the CRCs from an XML file *XMLFILE* and do not caclulate anything in the given *ELF*
: Import the CRCs from an XML file *XMLFILE* and do not calculate anything in the given *ELF*
**--help**, **-h**, **-?**
: Print help.
@@ -134,8 +134,8 @@
**patchelfcrc** -l -g word --start-magic=0x12345678 --end-magic=0x8754321 -p crc-32-mpeg -f bare -O .outputsection -S .text executable.elf
: Calculate the CRC over *.text* section and place the result in the *.outputsection* section.
The output sections start and end are checked for the given magic numbers in order to assure correct memory layout.
*CRC-32-MPEG* is used as CRC algorothm.
The output sections start and end are checked for the given magic numbers in order to ensure correct memory layout.
*CRC-32-MPEG* is used as CRC algorithm.
The memory is interpreted as *little endian* and the CRC calculation granularity is a 32 bit *word*.
# BUGS

View File

@@ -561,25 +561,24 @@ int elf_patch_compute_crc_over_section(elfpatch_handle_t *ep, const char *sectio
/* Find section */
sec = find_section_in_list(ep->sections, section);
if (!sec) {
print_err("Cannot find section %s\n", section);
print_err("Cannot find section '%s'\n", section);
return -1;
}
data = elf_getdata(sec->scn, NULL);
if (!data) {
print_err("Error reading section data from %s: %s\n", section, elf_errmsg(-1));
print_err("Error reading section data from '%s': %s\n", section, elf_errmsg(-1));
return -1;
}
print_debug("Section data length: %lu\n", data->d_size);
if (!data->d_size) {
print_err("Section %s contains no data.\n", section);
print_err("Section '%s' contains no data.\n", section);
return -2;
}
/* NOBIT sections have a length but no data in the file. Abort in this case */
if (!data->d_buf) {
print_err("Section %s does not contain loadable data.\n", section);
print_err("Section '%s' does not contain loadable data.\n", section);
return -2;
}
@@ -593,7 +592,7 @@ int elf_patch_compute_crc_over_section(elfpatch_handle_t *ep, const char *sectio
/* Check granularity vs size of section */
padding_count = (gran_in_bytes - data->d_size % gran_in_bytes) % gran_in_bytes;
if (padding_count) {
print_err("Section '%s' is not a multiple size of the given granularity. %u zero padding bytes will be added.\n",
print_warn("Section '%s' is not a multiple size of the given granularity. %u zero padding bytes will be added.\n",
section, padding_count);
}
@@ -633,7 +632,7 @@ static size_t calculate_needed_space_for_crcs(enum crc_format format,
break;
default:
needed_space = 0;
print_err("Unsupported CRC output format\n");
print_err("Unsupported CRC output format.\n");
}
/* Add existing magic numbers to required space */
if (check_start_magic) {

View File

@@ -239,12 +239,11 @@ static void prepare_default_opts(struct command_line_options *opts)
opts->output_section = NULL;
opts->export_xml = NULL;
opts->import_xml = NULL;
opts->force_nocolor = false;
}
static void print_verbose_start_info(const struct command_line_options *cmd_opts)
{
int i;
SlList *list_iter;
const struct named_crc *predef_crc;
print_debug("Start CRC patching\n");
@@ -278,11 +277,6 @@ static void print_verbose_start_info(const struct command_line_options *cmd_opts
if (cmd_opts->import_xml)
print_debug("Import CRCs from '%s'\n", cmd_opts->import_xml);
if (cmd_opts->section_list) {
for (list_iter = cmd_opts->section_list, i = 1; list_iter; list_iter = sl_list_next(list_iter), i++)
print_debug("Input section [%d]: \"%s\"\n", i, (const char *)list_iter->data);
}
}
static void free_cmd_args(struct command_line_options *opts)
@@ -459,7 +453,7 @@ int main(int argc, char **argv)
print_warn("--use-vma option only has an effect when exporting as struct output.\n");
if (!cmd_opts.output_section && cmd_opts.export_xml == NULL)
print_warn("No output section / XML export specified. Will continue but not create any output\n");
print_warn("No output section or XML export specified. Will continue but not create any output.\n");
/* Prepare libelf for use with the latest ELF version */
elf_version(EV_CURRENT);
@@ -501,7 +495,7 @@ int main(int argc, char **argv)
if (cmd_opts.export_xml) {
if (xml_write_crcs_to_file(cmd_opts.export_xml, crc_data)) {
print_err("Error during XML generation\n");
print_err("Error during XML generation.\n");
ret = -3;
}
}