K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2019-09-25T19:20:41.305174Z
K 7
svn:log
V 371
rfork(2): add RFSPAWN flag

When RFSPAWN is passed, rfork exhibits vfork(2) semantics but also resets
signal handlers in the child during creation to avoid a point of corruption
of parent state from the child.

This flag will be used by posix_spawn(3) to handle potential signal issues.

Reviewed by:	jilles, kib
Differential Revision:	https://reviews.freebsd.org/D19058

END