block_child_signal  199 src/callproc.c   block_child_signal (&oldset);
block_child_signal  674 src/callproc.c   block_child_signal (&oldset);
block_child_signal 2251 src/process.c    block_child_signal (&oldset);
block_child_signal 6989 src/process.c    block_child_signal (&oldset);
block_child_signal 8402 src/process.c    block_child_signal (&oldset);
block_child_signal   28 src/syssignal.h extern void block_child_signal (sigset_t *);