diff options
Diffstat (limited to 'xen/include/xen/libelf.h')
| -rw-r--r-- | xen/include/xen/libelf.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/xen/include/xen/libelf.h b/xen/include/xen/libelf.h index 9e709c22b7..4cc1836e77 100644 --- a/xen/include/xen/libelf.h +++ b/xen/include/xen/libelf.h @@ -51,6 +51,9 @@ typedef void elf_log_callback(struct elf_binary*, void *caller_data, #endif +#define ELF_MAX_STRING_LENGTH 4096 +#define ELF_MAX_TOTAL_NOTE_COUNT 65536 + /* ------------------------------------------------------------------------ */ /* Macros for accessing the input image and output area. */ @@ -353,6 +356,16 @@ ELF_HANDLE_DECL(elf_sym) elf_sym_by_index(struct elf_binary *elf, unsigned index const char *elf_note_name(struct elf_binary *elf, ELF_HANDLE_DECL(elf_note) note); /* may return NULL */ ELF_PTRVAL_CONST_VOID elf_note_desc(struct elf_binary *elf, ELF_HANDLE_DECL(elf_note) note); uint64_t elf_note_numeric(struct elf_binary *elf, ELF_HANDLE_DECL(elf_note) note); + +/* + * If you use elf_note_next in a loop, you must put a nontrivial upper + * bound on the returned value as part of your loop condition. In + * some cases elf_note_next will substitute ELF_PTRVAL_MAX as return + * value to indicate that the iteration isn't going well (for example, + * the putative "next" value would be earlier in memory). In this + * case the caller's loop must terminate. Checking against the + * end of the notes segment with a strict inequality is sufficient. + */ ELF_HANDLE_DECL(elf_note) elf_note_next(struct elf_binary *elf, ELF_HANDLE_DECL(elf_note) note); /* (Only) checks that the image has the right magic number. */ |