diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/nptl-signals.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/nptl-signals.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/nptl-signals.h b/sysdeps/unix/sysv/linux/nptl-signals.h index 01f34c27ec..271015903e 100644 --- a/sysdeps/unix/sysv/linux/nptl-signals.h +++ b/sysdeps/unix/sysv/linux/nptl-signals.h @@ -39,5 +39,46 @@ __nptl_is_internal_signal (int sig) return (sig == SIGCANCEL) || (sig == SIGTIMER) || (sig == SIGSETXID); } +/* Remove internal glibc signal from the mask. */ +static inline void +__nptl_clear_internal_signals (sigset_t *set) +{ + __sigdelset (set, SIGCANCEL); + __sigdelset (set, SIGTIMER); + __sigdelset (set, SIGSETXID); +} + +#define SIGALL_SET \ + ((__sigset_t) { .__val = {[0 ... _SIGSET_NWORDS-1 ] = -1 } }) + +/* Block all signals, including internal glibc ones. */ +static inline int +__libc_signal_block_all (sigset_t *set) +{ + INTERNAL_SYSCALL_DECL (err); + return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_BLOCK, &SIGALL_SET, + set, _NSIG / 8); +} + +/* Block all application signals (excluding internal glibc ones). */ +static inline int +__libc_signal_block_app (sigset_t *set) +{ + sigset_t allset = SIGALL_SET; + __nptl_clear_internal_signals (&allset); + INTERNAL_SYSCALL_DECL (err); + return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_BLOCK, &allset, set, + _NSIG / 8); +} + +/* Restore current process signal mask. */ +static inline int +__libc_signal_restore_set (const sigset_t *set) +{ + INTERNAL_SYSCALL_DECL (err); + return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, set, NULL, + _NSIG / 8); +} + /* Used to communicate with signal handler. */ extern struct xid_command *__xidcmd attribute_hidden; |