diff options
| author | Dale Rahn <drahn@cvs.openbsd.org> | 2006-05-03 16:10:53 +0000 |
|---|---|---|
| committer | Dale Rahn <drahn@cvs.openbsd.org> | 2006-05-03 16:10:53 +0000 |
| commit | ec4b8bbf8212a67706e8bf0d84a933147a5bf89c (patch) | |
| tree | f06a750d1a5fbec05783cff2a3ba488c9e288a69 /libexec/ld.so/sparc | |
| parent | b1f9a206d3729c6275222429f2ec0529817fc0b3 (diff) | |
prebind - how to prelink a binary without throwing security out the window
Prelink fixes the address of libraries making 'return to libc' attacks trival,
prebind uses a different method to achieve most of the same gains, however
without adding any security conerns.
Still under development, now in-tree.
Diffstat (limited to 'libexec/ld.so/sparc')
| -rw-r--r-- | libexec/ld.so/sparc/ldasm.S | 14 | ||||
| -rw-r--r-- | libexec/ld.so/sparc/syscall.h | 3 |
2 files changed, 15 insertions, 2 deletions
diff --git a/libexec/ld.so/sparc/ldasm.S b/libexec/ld.so/sparc/ldasm.S index 41304417ab3..1b210378132 100644 --- a/libexec/ld.so/sparc/ldasm.S +++ b/libexec/ld.so/sparc/ldasm.S @@ -1,4 +1,4 @@ -/* $OpenBSD: ldasm.S,v 1.14 2004/05/25 15:56:18 deraadt Exp $ */ +/* $OpenBSD: ldasm.S,v 1.15 2006/05/03 16:10:52 drahn Exp $ */ /* * Copyright (c) 2001 Jason L. Wright (jason@thought.net) @@ -319,6 +319,18 @@ _dl_sigprocmask: retl clr %o0 + + .section ".text" + .align 4 + .global _dl_gettimeofday + .type _dl_gettimeofday,@function +_dl_gettimeofday: + mov SYS_gettimeofday | SYSCALL_G2RFLAG, %g1 ! calling sys_gettimeofday + add %o7, 8, %g2 ! just return on success + t ST_SYSCALL ! off to wonderland + retl + sub %g0, %o0, %o0 ! error: result = -errno + /* * V8 sparc .{,u}{mul,div,rem} replacements. * We try to mimic them 100%. Full 64 bit sources or outputs, and diff --git a/libexec/ld.so/sparc/syscall.h b/libexec/ld.so/sparc/syscall.h index 92ebc12d3d3..bb07f56cab0 100644 --- a/libexec/ld.so/sparc/syscall.h +++ b/libexec/ld.so/sparc/syscall.h @@ -1,4 +1,4 @@ -/* $OpenBSD: syscall.h,v 1.7 2004/05/25 15:56:18 deraadt Exp $ */ +/* $OpenBSD: syscall.h,v 1.8 2006/05/03 16:10:52 drahn Exp $ */ /* * Copyright (c) 2001 Niklas Hallqvist @@ -53,6 +53,7 @@ int _dl_fcntl(int, int, ...); int _dl_getdirentries(int, char*, int, long *); int _dl_sigprocmask(int, const sigset_t *, sigset_t *); int _dl_sysctl(int *, u_int, void *, size_t *, void *, size_t); +int _dl_gettimeofday(struct timeval *tp, struct timezone *tzp); static inline off_t _dl_lseek(int fildes, off_t offset, int whence) |