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Work-around for a bug in BeOS concerning the cache - it's not a complete cure, though.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5481 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2003-11-25 18:32:41 +00:00
parent a8fc713847
commit b4f586280a
1 changed files with 8 additions and 0 deletions
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src/tests/kits/storage/virtualdrive/virtualdrive.cpp
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@@ -245,6 +245,14 @@ init_device_info(int32 index, virtual_drive_info *initInfo)
// Disable caching for underlying file! (else this driver will deadlock) // Disable caching for underlying file! (else this driver will deadlock)
// We probably cannot resize the file once the cache has been disabled! // We probably cannot resize the file once the cache has been disabled!
// This applies to BeOS only:
// Work around a bug in BFS: the file is not synced before the cache is
// turned off, and thus causing possible inconsistencies.
// Unfortunately, this only solves one half of the issue; there is
// no way to remove the blocks in the cache, so changes made to the
// image have the chance to get lost.
fsync(fd);
// This is a special reserved ioctl() opcode not defined anywhere in // This is a special reserved ioctl() opcode not defined anywhere in
// the Be headers. // the Be headers.
if (ioctl(fd, 10000) != 0) { if (ioctl(fd, 10000) != 0) {