diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | elf/dl-load.c | 10 |
2 files changed, 13 insertions, 3 deletions
@@ -1,3 +1,9 @@ +2000-10-28 Ulrich Drepper <drepper@redhat.com> + + * elf/dl-load.c (open_verify): Only try to load ET_DYN and ET_EXEC + objects. Reject all other types. + (_dl_map_object_from_fd): Optimize a bit. + 2000-10-27 Ulrich Drepper <drepper@redhat.com> * stdio-common/Makefile (tests): Add tst-fseek. diff --git a/elf/dl-load.c b/elf/dl-load.c index ff24463cad..e1a579186f 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -902,7 +902,7 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, /* Length of the sections to be loaded. */ maplength = loadcmds[nloadcmds - 1].allocend - c->mapstart; - if (type == ET_DYN || type == ET_REL) + if (__builtin_expect (type, ET_DYN) == ET_DYN) { /* This is a position-independent shared object. We can let the kernel map it anywhere it likes, but we must have space for all @@ -1279,10 +1279,10 @@ open_verify (const char *name, struct filebuf *fbp) /* XXX We should be able so set system specific versions which are allowed here. */ if (!VALID_ELF_OSABI (ehdr->e_ident[EI_OSABI])) - lose (0, fd, name, NULL, NULL, N_("ELF file OS ABI invalid.")); + lose (0, fd, name, NULL, NULL, N_("ELF file OS ABI invalid")); if (!VALID_ELF_ABIVERSION (ehdr->e_ident[EI_ABIVERSION])) lose (0, fd, name, NULL, NULL, - N_("ELF file ABI version invalid.")); + N_("ELF file ABI version invalid")); lose (0, fd, name, NULL, NULL, N_("internal error")); } @@ -1300,6 +1300,10 @@ open_verify (const char *name, struct filebuf *fbp) != sizeof (ElfW(Phdr))) lose (0, fd, name, NULL, NULL, N_("ELF file's phentsize not the expected size")); + else if (__builtin_expect (ehdr->e_type, ET_DYN) != ET_DYN + && __builtin_expect (ehdr->e_type, ET_EXEC) != ET_EXEC) + lose (0, fd, name, NULL, NULL, + N_("only ET_DYN and ET_EXEC can be loaded")); } return fd; |