diff options
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index c2182b53dace..0655570c67eb 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2182,7 +2182,6 @@ extern struct sigqueue *sigqueue_alloc(void); extern void sigqueue_free(struct sigqueue *); extern int send_sigqueue(struct sigqueue *, struct task_struct *, int group); extern int do_sigaction(int, struct k_sigaction *, struct k_sigaction *); -extern int do_sigaltstack(const stack_t __user *, stack_t __user *, unsigned long); static inline void restore_saved_sigmask(void) { @@ -2228,6 +2227,17 @@ static inline int sas_ss_flags(unsigned long sp) : on_sig_stack(sp) ? SS_ONSTACK : 0); } +static inline unsigned long sigsp(unsigned long sp, struct ksignal *ksig) +{ + if (unlikely((ksig->ka.sa.sa_flags & SA_ONSTACK)) && ! sas_ss_flags(sp)) +#ifdef CONFIG_STACK_GROWSUP + return current->sas_ss_sp; +#else + return current->sas_ss_sp + current->sas_ss_size; +#endif + return sp; +} + /* * Routines for handling mm_structs */ |