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dll: MountBroadcastDriveChange registry setting: BSF_POSTMESSAGE

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This commit is contained in:
Bill Zissimopoulos 2022-05-25 20:52:54 +01:00
parent 41d69d7186
commit 6764269a49
1 changed files with 4 additions and 2 deletions
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6
src/dll/mount.c
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@ -400,7 +400,9 @@ static VOID FspMountBroadcastDriveChange(PWSTR MountPoint, WPARAM WParam)
* still fail to respond to a broadcasted message indefinitely. This can result in the BSM
* API never returning ("hanging").
*
* To resolve this we simply call BroadcastSystemMessage without NOTIMEOUTIFNOTHUNG.
* To resolve this we simply call BroadcastSystemMessage with BSF_POSTMESSAGE. (It would work
* with BSF_NOHANG | BSF_FORCEIFHUNG and without NOTIMEOUTIFNOTHUNG, but BSF_POSTMESSAGE is
* faster).
*/
BOOLEAN IsLocalSystem;
@ -415,7 +417,7 @@ static VOID FspMountBroadcastDriveChange(PWSTR MountPoint, WPARAM WParam)
DriveChange.dbcv_flags = DBTF_NET;
DriveChange.dbcv_unitmask = 1 << (MountPoint[0] - 'a');
Flags = BSF_NOHANG | BSF_FORCEIFHUNG;
Flags = BSF_POSTMESSAGE;
Recipients = BSM_APPLICATIONS | (IsLocalSystem ? BSM_ALLDESKTOPS : 0);
BroadcastSystemMessageW(
Flags,