diff options
Diffstat (limited to 'libelf/elf32_getphdr.c')
| -rw-r--r-- | libelf/elf32_getphdr.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/libelf/elf32_getphdr.c b/libelf/elf32_getphdr.c index 1b82a480..99b4ac09 100644 --- a/libelf/elf32_getphdr.c +++ b/libelf/elf32_getphdr.c @@ -1,5 +1,5 @@ /* Get ELF program header table. - Copyright (C) 1998-2010, 2014 Red Hat, Inc. + Copyright (C) 1998-2010, 2014, 2015 Red Hat, Inc. This file is part of elfutils. Written by Ulrich Drepper <drepper@redhat.com>, 1998. @@ -46,8 +46,7 @@ #endif ElfW2(LIBELFBITS,Phdr) * -__elfw2(LIBELFBITS,getphdr_wrlock) (elf) - Elf *elf; +__elfw2(LIBELFBITS,getphdr_wrlock) (Elf *elf) { ElfW2(LIBELFBITS,Phdr) *result; @@ -141,13 +140,20 @@ __elfw2(LIBELFBITS,getphdr_wrlock) (elf) } else { - if (ALLOW_UNALIGNED - || ((uintptr_t) file_phdr - & (__alignof__ (ElfW2(LIBELFBITS,Phdr)) - 1)) == 0) + bool copy = ! (ALLOW_UNALIGNED + || ((uintptr_t) file_phdr + & (__alignof__ (ElfW2(LIBELFBITS,Phdr)) + - 1)) == 0); + if (! copy) notcvt = file_phdr; else { - notcvt = (ElfW2(LIBELFBITS,Phdr) *) alloca (size); + notcvt = (ElfW2(LIBELFBITS,Phdr) *) malloc (size); + if (unlikely (notcvt == NULL)) + { + __libelf_seterrno (ELF_E_NOMEM); + goto out; + } memcpy (notcvt, file_phdr, size); } @@ -162,6 +168,9 @@ __elfw2(LIBELFBITS,getphdr_wrlock) (elf) CONVERT_TO (phdr[cnt].p_flags, notcvt[cnt].p_flags); CONVERT_TO (phdr[cnt].p_align, notcvt[cnt].p_align); } + + if (copy) + free (notcvt); } } } @@ -227,8 +236,7 @@ __elfw2(LIBELFBITS,getphdr_wrlock) (elf) } ElfW2(LIBELFBITS,Phdr) * -elfw2(LIBELFBITS,getphdr) (elf) - Elf *elf; +elfw2(LIBELFBITS,getphdr) (Elf *elf) { ElfW2(LIBELFBITS,Phdr) *result; |