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LibELF: Use StringBuilders instead of Strings for the interpreter path

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This is required for the Kernel's usage of LibELF, since Strings do not
expose allocation failure.
This commit is contained in:
Idan Horowitz 2022-01-13 18:50:17 +02:00 • committed by Andreas Kling
parent fb3e46e930
commit 3e959618c3
8 changed files with 36 additions and 18 deletions
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6
Userland/Libraries/LibELF/Validation.cpp
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@ -192,7 +192,7 @@ bool validate_elf_header(const ElfW(Ehdr) & elf_header, size_t file_size, bool v
return true;
}
bool validate_program_headers(const ElfW(Ehdr) & elf_header, size_t file_size, const u8* buffer, size_t buffer_size, String* interpreter_path, bool verbose)
ErrorOr<bool> validate_program_headers(const ElfW(Ehdr) & elf_header, size_t file_size, const u8* buffer, size_t buffer_size, StringBuilder* interpreter_path_builder, bool verbose)
{
Checked<size_t> total_size_of_program_headers = elf_header.e_phnum;
total_size_of_program_headers *= elf_header.e_phentsize;
@ -268,8 +268,8 @@ bool validate_program_headers(const ElfW(Ehdr) & elf_header, size_t file_size, c
dbgln("Found PT_INTERP header ({}), but p_filesz is invalid ({})", header_index, program_header.p_filesz);
return false;
}
if (interpreter_path)
*interpreter_path = String((const char*)&buffer[program_header.p_offset], program_header.p_filesz - 1);
if (interpreter_path_builder)
TRY(interpreter_path_builder->try_append({ &buffer[program_header.p_offset], program_header.p_filesz - 1 }));
break;
case PT_LOAD:
case PT_DYNAMIC: