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shadow-image: write tag table entry executable info to image

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This commit is contained in:
max 🍓
2025-07-04 15:33:36 +01:00
parent 9d374598c8
commit 06362e204a
1 changed files with 47 additions and 6 deletions
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53
src/shadow-image.c
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@@ -31,6 +31,43 @@ static void encode_header(
out->h_app_magic = b_i64_htob(in->img_id);
}
static void encode_tag_executable_info(
const struct ec3_tag_executable_info *in,
struct ec3_executable *out)
{
out->exe_format = b_i16_htob(in->exe_format);
switch (in->exe_format) {
case EC3_EXEC_ELF:
out->exe_elf.elf_data_offset
= b_i32_htob(in->exe_elf.elf_data_offset);
out->exe_elf.elf_data_filesz
= b_i32_htob(in->exe_elf.elf_data_filesz);
out->exe_elf.elf_data_memsz
= b_i32_htob(in->exe_elf.elf_data_memsz);
out->exe_elf.elf_data_align
= b_i32_htob(in->exe_elf.elf_data_align);
out->exe_elf.elf_text_offset
= b_i32_htob(in->exe_elf.elf_text_offset);
out->exe_elf.elf_text_filesz
= b_i32_htob(in->exe_elf.elf_text_filesz);
out->exe_elf.elf_text_memsz
= b_i32_htob(in->exe_elf.elf_text_memsz);
out->exe_elf.elf_text_align
= b_i32_htob(in->exe_elf.elf_text_align);
out->exe_elf.elf_data_vaddr
= b_i64_htob(in->exe_elf.elf_data_vaddr);
out->exe_elf.elf_text_vaddr
= b_i64_htob(in->exe_elf.elf_text_vaddr);
out->exe_elf.elf_entry = b_i64_htob(in->exe_elf.elf_entry);
break;
default:
break;
}
}
static void encode_tag(
const struct ec3_tag_info *in,
struct ec3_tag_table_entry *out)
@@ -42,6 +79,10 @@ static void encode_tag(
out->tag_checksum = b_i32_htob(in->tag_checksum);
out->tag_ident = b_i64_htob(in->tag_ident);
out->tag_length = b_i64_htob(in->tag_total_length);
if (in->tag_type == EC3_TAG_EXEC) {
encode_tag_executable_info(&in->tag_exe, &out->tag_exe);
}
}
static void encode_extent(
@@ -454,8 +495,8 @@ static enum ec3_status put_empty_cluster(
return EC3_SUCCESS;
}
/* retrieve a cached cluster from a tag io context, encode it, and write it
* to the shadow image */
/* retrieve a cached cluster from a tag io context, encode it, and write
* it to the shadow image */
static enum ec3_status copy_cached_cluster(
struct shadow_image *image,
struct ec3_tag_ioctx *tag,
@@ -521,10 +562,10 @@ static enum ec3_status copy_cached_cluster(
return EC3_SUCCESS;
}
/* read a range of clusters from the source image, delimited by an extent.
* write the clusters to the shadow image. the tag's cache is also checked for
* each cluster in the extent. of a cached version of the cluster's contents
* exists, that is used instead */
/* read a range of clusters from the source image, delimited by an
* extent. write the clusters to the shadow image. the tag's cache is
* also checked for each cluster in the extent. of a cached version of
* the cluster's contents exists, that is used instead */
static enum ec3_status copy_cluster_range(
struct ec3_image_ioctx *src,
struct shadow_image *dest,