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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-20 14:24:26 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-19 18:07:41 -0500 |
| commit | c40702c49faef05ae324f121d8b3e215244ee152 (patch) | |
| tree | b0b2a51b07e944497da5cb48fb461963a3762cad /arch/x86/um | |
| parent | 9026843952adac5b123c7b8dc961e5c15828d9e1 (diff) | |
| download | linux-c40702c49faef05ae324f121d8b3e215244ee152.tar.gz linux-c40702c49faef05ae324f121d8b3e215244ee152.tar.bz2 linux-c40702c49faef05ae324f121d8b3e215244ee152.zip | |
new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those
note that they are relying on access_ok() already checked by caller.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/um')
| -rw-r--r-- | arch/x86/um/signal.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c index bdaa08cfbcf4..71cef48ea5cd 100644 --- a/arch/x86/um/signal.c +++ b/arch/x86/um/signal.c @@ -342,9 +342,7 @@ static int copy_ucontext_to_user(struct ucontext __user *uc, { int err = 0; - err |= put_user(current->sas_ss_sp, &uc->uc_stack.ss_sp); - err |= put_user(sas_ss_flags(sp), &uc->uc_stack.ss_flags); - err |= put_user(current->sas_ss_size, &uc->uc_stack.ss_size); + err |= __save_altstack(&uc->uc_stack, sp); err |= copy_sc_to_user(&uc->uc_mcontext, fp, ¤t->thread.regs, 0); err |= copy_to_user(&uc->uc_sigmask, set, sizeof(*set)); return err; @@ -529,10 +527,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); err |= __put_user(0, &frame->uc.uc_link); - err |= __put_user(me->sas_ss_sp, &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(PT_REGS_SP(regs)), - &frame->uc.uc_stack.ss_flags); - err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size); + err |= __save_altstack(&frame->uc.uc_stack, PT_REGS_SP(regs)); err |= copy_sc_to_user(&frame->uc.uc_mcontext, &frame->fpstate, regs, set->sig[0]); err |= __put_user(&frame->fpstate, &frame->uc.uc_mcontext.fpstate); |