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| author | Ulrich Drepper <drepper@redhat.com> | 2000-10-28 09:16:32 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2000-10-28 09:16:32 +0000 |
| commit | 9987236eb11d4976b5ce23a4c76f6ab2453c9508 (patch) | |
| tree | 81efb8a1649ed020da1bf68d5dd08f4f5aa0a626 /elf/dl-load.c | |
| parent | 9ffec5b234e7fe5d16f65d8655b036e64fe00bad (diff) | |
| download | glibc-9987236eb11d4976b5ce23a4c76f6ab2453c9508.zip glibc-9987236eb11d4976b5ce23a4c76f6ab2453c9508.tar.gz glibc-9987236eb11d4976b5ce23a4c76f6ab2453c9508.tar.bz2 | |
Update.
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.
Diffstat (limited to 'elf/dl-load.c')
| -rw-r--r-- | elf/dl-load.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index ff24463..e1a5791 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; |