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| author | jlemon <jlemon@FreeBSD.org> | 1997-09-12 15:58:47 +0000 |
|---|---|---|
| committer | jlemon <jlemon@FreeBSD.org> | 1997-09-12 15:58:47 +0000 |
| commit | 0eba88d0be7e6e2f8d45f440de4767003f6274dc (patch) | |
| tree | f79451f2016f2cfc33e970df366a9815632f7bdc /sys/vm | |
| parent | df823fc604c41c13cbcb6ba3582f2c254527e1d7 (diff) | |
| download | FreeBSD-src-0eba88d0be7e6e2f8d45f440de4767003f6274dc.zip FreeBSD-src-0eba88d0be7e6e2f8d45f440de4767003f6274dc.tar.gz | |
Do not consider VM_PROT_OVERRIDE_WRITE to be part of the protection
entry when handling a fault. This is set by procfs whenever it wants
to write to a page, as a means of overriding `r-x COW' entries, but
causes failures in the `rwx' case.
Submitted by: bde
Diffstat (limited to 'sys/vm')
| -rw-r--r-- | sys/vm/vm_map.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index d2e9f4b..1b7e1ac 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_map.c,v 1.88 1997/08/25 22:15:22 bde Exp $ + * $Id: vm_map.c,v 1.89 1997/09/01 03:17:18 bde Exp $ */ /* @@ -2287,7 +2287,8 @@ RetryLookup:; if ((fault_type & VM_PROT_OVERRIDE_WRITE) == 0 || (entry->eflags & MAP_ENTRY_COW) == 0 || (entry->wired_count != 0)) { - if ((fault_type & (prot)) != fault_type) + if ((fault_type & (prot)) != + (fault_type & ~VM_PROT_OVERRIDE_WRITE)) RETURN(KERN_PROTECTION_FAILURE); } |
