diff options
Diffstat (limited to 'elf/dl-load.c')
| -rw-r--r-- | elf/dl-load.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index 7640ec3289..2f3e878e7a 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -673,6 +673,11 @@ _dl_map_object_from_fd (const char *name, int fd, char *realname, /* This is the expected ELF header. */ #define ELF32_CLASS ELFCLASS32 #define ELF64_CLASS ELFCLASS64 +#ifndef VALID_ELF_HEADER +# define VALID_ELF_HEADER(hdr,exp,size) (memcmp (hdr, exp, size) == 0) +# define VALID_ELF_OSABI(osabi) (osabi == ELFOSABI_SYSV) +# define VALID_ELF_ABIVERSION(ver) (ver == 0) +#endif static const unsigned char expected[EI_PAD] = { [EI_MAG0] = ELFMAG0, @@ -739,7 +744,8 @@ _dl_map_object_from_fd (const char *name, int fd, char *realname, header = (void *) readbuf; /* Check the header for basic validity. */ - if (__builtin_expect (memcmp (header->e_ident, expected, EI_PAD), 0) != 0) + if (__builtin_expect (VALID_ELF_HEADER (header->e_ident, expected, EI_PAD), + 0) != 0) { /* Something is wrong. */ if (*(Elf32_Word *) &header->e_ident != @@ -764,10 +770,10 @@ _dl_map_object_from_fd (const char *name, int fd, char *realname, LOSE (0, "ELF file version ident not " STRING(EV_CURRENT)); /* XXX We should be able so set system specific versions which are allowed here. */ - if (header->e_ident[EI_OSABI] != ELFOSABI_SYSV) - LOSE (0, "ELF file OS ABI not " STRING(ELFOSABI_SYSV)); - if (header->e_ident[EI_ABIVERSION] != 0) - LOSE (0, "ELF file ABI version not 0"); + if (!VALID_ELF_OSABI (header->e_ident[EI_OSABI])) + LOSE (0, "ELF file OS ABI invalid."); + if (!VALID_ELF_ABIVERSION (header->e_ident[EI_ABIVERSION])) + LOSE (0, "ELF file ABI version invalid."); LOSE (0, "internal error"); } |