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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2014-11-09 22:31:21 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2014-11-09 22:31:21 +0100
commit94b2c453829b3aebdaccf7d3d252136b283002b3 (patch)
tree741fc5b14a62a18f66e349b8234088f59e5c171f /libdiskfs
parent9480792609c779516ac465ac5a038101032be77d (diff)
Deal with odd kernel behavior
Some versions of gnumach actually take address as a mapping hint, and would fail if the hint is bogus. Make sure to pass 0 for those versions. * console/pager.c (user_pager_create): Make sure to set *user to 0 before calling vm_map. * libdiskfs/disk-pager.c (diskfs_start_disk_pager): Make sure to set *image to 0 before calling vm_map. * libpager/pager-memcpy.c (pager_memcpy): Set window to 0 before calling vm_map. * tmpfs/node.c (diskfs_get_filemap): Make sure to set np->dn->u.reg.memref to 0 before calling vm_map.
Diffstat (limited to 'libdiskfs')
-rw-r--r--libdiskfs/disk-pager.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libdiskfs/disk-pager.c b/libdiskfs/disk-pager.c
index 4083ef27..008aa2dc 100644
--- a/libdiskfs/disk-pager.c
+++ b/libdiskfs/disk-pager.c
@@ -60,6 +60,7 @@ diskfs_start_disk_pager (struct user_pager_info *upi,
MACH_MSG_TYPE_MAKE_SEND);
/* Now map the disk image. */
+ *image = 0;
err = vm_map (mach_task_self (), (vm_address_t *)image, size,
0, 1, disk_pager_port, 0, 0,
VM_PROT_READ | (diskfs_readonly ? 0 : VM_PROT_WRITE),