CVS log for src/tests/kernel/h_cloexec.c

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Pull up following revision(s) (requested by 1922):

	tests/kernel/Makefile: revision 1.83
	sys/sys/filedesc.h: revision 1.71
	distrib/sets/lists/tests/mi: revision 1.1346
	tests/kernel/h_cloexec.c: revision 1.1
	tests/kernel/t_cloexec.c: revision 1.1
	sys/compat/netbsd32/netbsd32_ioctl.c: revision 1.122
	distrib/sets/lists/debug/mi: revision 1.454

tests/kernel/t_cloexec: New tests for close-on-exec.

Verified that the following tests fail on a netbsd-10 kernel:
- clonedev_posixspawn
- dup3_posixspawn
- fcntldupfd_posixspawn

PR kern/58822: close-on-exec is broken for dup3 and opening cloning
devices
sys/filedesc.h: Add a note about writing to ff_exclose.
No functional change intended -- just a reminder to avoid repeating a
class of bugs we've had.

PR kern/58822: close-on-exec is broken for dup3 and opening cloning
devices

netbsd32_ioctl: Use fd_set_exclose instead of open-coding it.
No functional change intended -- this just reduces unnecessary
copies of open-coded logic which, when copied incompletely, led to:

PR kern/58822: close-on-exec is broken for dup3 and opening cloning
devices

Pull up following revision(s) (requested by riastradh in ticket #1007):

	tests/kernel/Makefile: revision 1.83
	sys/sys/filedesc.h: revision 1.71
	distrib/sets/lists/tests/mi: revision 1.1346
	tests/kernel/h_cloexec.c: revision 1.1
	tests/kernel/t_cloexec.c: revision 1.1
	sys/compat/netbsd32/netbsd32_ioctl.c: revision 1.122
	distrib/sets/lists/debug/mi: revision 1.454

tests/kernel/t_cloexec: New tests for close-on-exec.
Verified that the following tests fail on a netbsd-10 kernel:
- clonedev_posixspawn
- dup3_posixspawn
- fcntldupfd_posixspawn
PR kern/58822: close-on-exec is broken for dup3 and opening cloning
devices


sys/filedesc.h: Add a note about writing to ff_exclose.
No functional change intended -- just a reminder to avoid repeating a
class of bugs we've had.
PR kern/58822: close-on-exec is broken for dup3 and opening cloning
devices


netbsd32_ioctl: Use fd_set_exclose instead of open-coding it.
No functional change intended -- this just reduces unnecessary
copies of open-coded logic which, when copied incompletely, led to:
PR kern/58822: close-on-exec is broken for dup3 and opening cloning
devices

file h_cloexec.c was added on branch netbsd-9 on 2024-11-18 17:38:03 +0000

file h_cloexec.c was added on branch netbsd-10 on 2024-11-17 16:16:10 +0000

tests/kernel/t_cloexec: New tests for close-on-exec.

Verified that the following tests fail on a netbsd-10 kernel:

- clonedev_posixspawn
- dup3_posixspawn
- fcntldupfd_posixspawn

PR kern/58822: close-on-exec is broken for dup3 and opening cloning
devices