Kirk McKusick 3592b7155c Clean up the snapshot code so that it no longer depends on the use of ... the SF_IMMUTABLE flag to prevent writing. Instead put in explicit checking for the SF_SNAPSHOT flag in the appropriate places. With this change, it is now possible to rename and link to snapshot files. It is also possible to set or clear any of the owner, group, or other read bits on the file, though none of the write or execute bits can be set. There is also an explicit test to prevent the setting or clearing of the SF_SNAPSHOT flag via chflags() or fchflags(). Note also that the modify time cannot be changed as it needs to accurately reflect the time that the snapshot was taken. Submitted by: Robert Watson <rwatson@FreeBSD.org>		2000-07-26 23:07:01 +00:00
..
default_pager.c	Revert spelling mistake I made in the previous commit	2000-03-27 20:41:17 +00:00
device_pager.c	Revert spelling mistake I made in the previous commit	2000-03-27 20:41:17 +00:00
phys_pager.c	This is a cleanup patch to Peter's new OBJT_PHYS VM object type	2000-05-29 22:40:54 +00:00
pmap.h	Brucify the pmap_enter_temporary() changes.	2000-05-29 19:21:01 +00:00
swap_pager.c	Implement an optimization of the VM<->pmap API. Pass vm_page_t's directly	2000-05-21 12:50:18 +00:00
swap_pager.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 05:07:58 +00:00
vm_extern.h	Remove unused 3rd argument from vsunlock() which abused B_WRITE.	2000-03-13 10:47:24 +00:00
vm_fault.c	This is a cleanup patch to Peter's new OBJT_PHYS VM object type	2000-05-29 22:40:54 +00:00
vm_glue.c	Remove unneeded <sys/buf.h> includes.	2000-04-18 15:15:39 +00:00
vm_init.c	Revert spelling mistake I made in the previous commit	2000-03-27 20:41:17 +00:00
vm_kern.c	Implement an optimization of the VM<->pmap API. Pass vm_page_t's directly	2000-05-21 12:50:18 +00:00
vm_kern.h	Fix null-pointer dereference crash when the system is intentionally	2000-02-16 21:11:33 +00:00
vm_map.c	Fixed bug in madvise() / MADV_WILLNEED. When the request is offset	2000-05-14 18:46:40 +00:00
vm_map.h	Add MAP_NOCORE to mmap(2), and MADV_NOCORE and MADV_CORE to madvise(2).	2000-02-28 04:10:35 +00:00
vm_meter.c	Support for unsigned integer and long sysctl variables. Update the	2000-07-05 07:46:41 +00:00
vm_mmap.c	Clean up the snapshot code so that it no longer depends on the use of	2000-07-26 23:07:01 +00:00
vm_object.c	This is a cleanup patch to Peter's new OBJT_PHYS VM object type	2000-05-29 22:40:54 +00:00
vm_object.h	This is a cleanup patch to Peter's new OBJT_PHYS VM object type	2000-05-29 22:40:54 +00:00
vm_page.c	Simplify and rationalise the management of the vnode free list	2000-07-04 04:32:40 +00:00
vm_page.h	#elsif -> #elif	2000-07-11 09:41:29 +00:00
vm_pageout.c	Add snapshots to the fast filesystem. Most of the changes support	2000-07-11 22:07:57 +00:00
vm_pageout.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 05:07:58 +00:00
vm_pager.c	Checkpoint of a new physical memory backed object type, that does not	2000-05-21 13:41:29 +00:00
vm_pager.h	Back out the previous change to the queue(3) interface.	2000-05-26 02:09:24 +00:00
vm_param.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 05:07:58 +00:00
vm_swap.c	Separate the struct bio related stuff out of <sys/buf.h> into	2000-05-05 09:59:14 +00:00
vm_unix.c	Revert spelling mistake I made in the previous commit	2000-03-27 20:41:17 +00:00
vm_zone.c	Previous commit changing SYSCTL_HANDLER_ARGS violated KNF.	2000-07-04 11:25:35 +00:00
vm_zone.h	$Id$ -> $FreeBSD$	1999-08-28 01:08:13 +00:00
vm.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 05:07:58 +00:00
vnode_pager.c	Add snapshots to the fast filesystem. Most of the changes support	2000-07-11 22:07:57 +00:00
vnode_pager.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 05:07:58 +00:00