diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/aarch64/dl-bti.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sysdeps/aarch64/dl-bti.c b/sysdeps/aarch64/dl-bti.c index 965ddcc..196e462 100644 --- a/sysdeps/aarch64/dl-bti.c +++ b/sysdeps/aarch64/dl-bti.c @@ -24,13 +24,20 @@ static int enable_bti (struct link_map *map, const char *program) { const ElfW(Phdr) *phdr; - unsigned prot = PROT_READ | PROT_EXEC | PROT_BTI; + unsigned prot; for (phdr = map->l_phdr; phdr < &map->l_phdr[map->l_phnum]; ++phdr) if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_X)) { void *start = (void *) (phdr->p_vaddr + map->l_addr); size_t len = phdr->p_memsz; + + prot = PROT_EXEC | PROT_BTI; + if (phdr->p_flags & PF_R) + prot |= PROT_READ; + if (phdr->p_flags & PF_W) + prot |= PROT_WRITE; + if (__mprotect (start, len, prot) < 0) { if (program) |