old_mask 483 src/subshell/common.c sigset_t sigchld_mask, old_mask; old_mask 487 src/subshell/common.c sigprocmask (SIG_BLOCK, &sigchld_mask, &old_mask); old_mask 493 src/subshell/common.c sigdelset (&old_mask, SIGCHLD); old_mask 497 src/subshell/common.c sigsuspend (&old_mask); old_mask 508 src/subshell/common.c sigprocmask (SIG_SETMASK, &old_mask, NULL);