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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2014-11-09 22:38:22 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2014-11-09 22:38:22 +0100 |
| commit | 84172a2e26fd81c1c39b6301b003cc89b97ee75c (patch) | |
| tree | 77a4d8ab1640859e5e47aa1e4793373537857005 /libstore | |
| parent | 94b2c453829b3aebdaccf7d3d252136b283002b3 (diff) | |
| download | hurd-84172a2e26fd81c1c39b6301b003cc89b97ee75c.tar.gz hurd-84172a2e26fd81c1c39b6301b003cc89b97ee75c.tar.bz2 hurd-84172a2e26fd81c1c39b6301b003cc89b97ee75c.zip | |
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.
* libstore/memobj.c (memobj_read): Make sure to set *buf to 0 before
calling vm_map.
Diffstat (limited to 'libstore')
| -rw-r--r-- | libstore/memobj.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libstore/memobj.c b/libstore/memobj.c index 0d5c816e..cc6c7cac 100644 --- a/libstore/memobj.c +++ b/libstore/memobj.c @@ -133,6 +133,7 @@ memobj_read (struct store *store, if (((size_t) addr & (vm_page_size - 1)) == 0) { *len = amount; + *buf = 0; return vm_map (mach_task_self (), (vm_address_t *) buf, amount, 0, 1, store->port, addr << store->log2_block_size, 0, VM_PROT_READ, VM_PROT_ALL, VM_INHERIT_NONE); |