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linux-user: Pass ka_restorer to do_sigaction

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The value of ka_restorer needs to be saved in sigact_table.
At the moment, the attempt to save it in do_syscall is
improperly clobbering user memory.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210422230227.314751-4-richard.henderson@linaro.org>
[lv: remove tab]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2021-04-22 16:02:23 -07:00 • committed by Laurent Vivier
parent f20a9ca6d0
commit 02fb28e8ef
3 changed files with 11 additions and 15 deletions
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5
linux-user/signal.c
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@ -842,7 +842,7 @@ abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr,
/* do_sigaction() return target values and host errnos */
int do_sigaction(int sig, const struct target_sigaction *act,
struct target_sigaction *oact)
struct target_sigaction *oact, abi_ulong ka_restorer)
{
struct target_sigaction *k;
struct sigaction act1;
@ -875,6 +875,9 @@ int do_sigaction(int sig, const struct target_sigaction *act,
__get_user(k->sa_flags, &act->sa_flags);
#ifdef TARGET_ARCH_HAS_SA_RESTORER
__get_user(k->sa_restorer, &act->sa_restorer);
#endif
#ifdef TARGET_ARCH_HAS_KA_RESTORER
k->ka_restorer = ka_restorer;
#endif
/* To be swapped in target_to_host_sigset. */
k->sa_mask = act->sa_mask;