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| author | Andreas Schwab <schwab@suse.de> | 2019-10-10 10:45:31 +0200 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2019-10-10 13:01:38 +0200 |
| commit | 8a3ca0fdd33629854a73ffd9251aa9d77e4766e4 (patch) | |
| tree | 7183b5f3b6f64e406d98e52ca29b27a9095fc09e /elf/dl-load.c | |
| parent | e027ddeff60932b6a17f7f7c8b5c0a044b85722d (diff) | |
| download | glibc-8a3ca0fdd33629854a73ffd9251aa9d77e4766e4.tar.gz | |
Simplify note processing
This removes dead code during note processing.
Diffstat (limited to 'elf/dl-load.c')
| -rw-r--r-- | elf/dl-load.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index 24e2819345..1ed7a7bbd6 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -1682,21 +1682,10 @@ open_verify (const char *name, int fd, /* Check .note.ABI-tag if present. */ for (ph = phdr; ph < &phdr[ehdr->e_phnum]; ++ph) - if (ph->p_type == PT_NOTE && ph->p_filesz >= 32 && ph->p_align >= 4) + if (ph->p_type == PT_NOTE && ph->p_filesz >= 32 + && (ph->p_align == 4 || ph->p_align == 8)) { ElfW(Addr) size = ph->p_filesz; - /* NB: Some PT_NOTE segment may have alignment value of 0 - or 1. gABI specifies that PT_NOTE segments should be - aligned to 4 bytes in 32-bit objects and to 8 bytes in - 64-bit objects. As a Linux extension, we also support - 4 byte alignment in 64-bit objects. If p_align is less - than 4, we treate alignment as 4 bytes since some note - segments have 0 or 1 byte alignment. */ - ElfW(Addr) align = ph->p_align; - if (align < 4) - align = 4; - else if (align != 4 && align != 8) - continue; if (ph->p_offset + size <= (size_t) fbp->len) abi_note = (void *) (fbp->buf + ph->p_offset); @@ -1727,7 +1716,7 @@ open_verify (const char *name, int fd, { ElfW(Addr) note_size = ELF_NOTE_NEXT_OFFSET (abi_note[0], abi_note[1], - align); + ph->p_align); if (size - 32 < note_size) { |