From 7d2543a3cb3089241982ce4f8984fd723d5312a1 Mon Sep 17 00:00:00 2001 From: Daniel Stone Date: Wed, 29 Dec 2010 12:03:01 +0000 Subject: XKB: Add debug key actions for grabs & window tree Add four new private XKB actions for debugging: * PrGrbs: print active grabs to the log file * Ungrab: ungrab all currently active grabs * ClsGrb: kill clients with active grabs * PrWins: dump the current window tree to the log file To use these, you need to modify your XKB maps, e.g. the following to have Ctrl+Alt+(F9-F12) mapped to the above: - compat/xfree86: interpret XF86LogGrabInfo { action = Private(type=0x86, data="PrGrbs"); }; interpret XF86Ungrab { action = Private(type=0x86, data="Ungrab"); } interpret XF86ClearGrab { action = Private(type=0x86, data="ClsGrb"); } interpret XF86LogWindowTree { action = Private(type=0x86, data="PrWins"); } - symbols/pc: key { type="CTRL+ALT", [ Return, XF86LogGrabInfo ] }; key { type="CTRL+ALT", [ Return, XF86Ungrab ] }; key { type="CTRL+ALT", [ Return, XF86ClearGrab ] }; key { type="CTRL+ALT", [ Return, XF86LogWindowTree ] }; At the moment, this only works if the grabbing client continues to call AllowEvents, as the server does no event processing at all when a device is frozen. Signed-off-by: Daniel Stone Reviewed-by: Peter Hutterer Signed-off-by: Peter Hutterer --- dix/grabs.c | 112 ++++++++++++++++++++++++++++++++++++++++ hw/xfree86/dixmods/xkbPrivate.c | 15 ++++++ include/dixgrabs.h | 3 ++ 3 files changed, 130 insertions(+) diff --git a/dix/grabs.c b/dix/grabs.c index 69c58dff9..85ca9eee0 100644 --- a/dix/grabs.c +++ b/dix/grabs.c @@ -68,6 +68,118 @@ SOFTWARE. #define BITCLEAR(buf, i) MASKWORD(buf, i) &= ~BITMASK(i) #define GETBIT(buf, i) (MASKWORD(buf, i) & BITMASK(i)) +void +PrintDeviceGrabInfo(DeviceIntPtr dev) +{ + ClientPtr client; + LocalClientCredRec *lcc; + int i, j; + GrabInfoPtr devGrab = &dev->deviceGrab; + GrabPtr grab = devGrab->grab; + + ErrorF("Active grab 0x%lx (%s) on device '%s' (%d):", + (unsigned long) grab->resource, + (grab->grabtype == GRABTYPE_XI2) ? "xi2" : + ((grab->grabtype == GRABTYPE_CORE) ? "core" : "xi1"), + dev->name, dev->id); + + client = clients[CLIENT_ID(grab->resource)]; + if (client && GetLocalClientCreds(client, &lcc) != -1) + { + ErrorF(" client pid %ld uid %ld gid %ld\n", + (lcc->fieldsSet & LCC_PID_SET) ? (long) lcc->pid : 0, + (lcc->fieldsSet & LCC_UID_SET) ? (long) lcc->euid : 0, + (lcc->fieldsSet & LCC_GID_SET) ? (long) lcc->egid : 0); + FreeLocalClientCreds(lcc); + } + else + { + ErrorF(" (no client information available)\n"); + } + + /* XXX is this even correct? */ + if (devGrab->sync.other) + ErrorF(" grab ID 0x%lx from paired device\n", + (unsigned long) devGrab->sync.other->resource); + + ErrorF(" at %ld (from %s grab)%s (device %s, state %d)\n", + (unsigned long) devGrab->grabTime.milliseconds, + devGrab->fromPassiveGrab ? "passive" : "active", + devGrab->implicitGrab ? " (implicit)" : "", + devGrab->sync.frozen ? "frozen" : "thawed", + devGrab->sync.state); + + if (grab->grabtype == GRABTYPE_CORE) + { + ErrorF(" core event mask 0x%lx\n", + (unsigned long) grab->eventMask); + } + else if (grab->grabtype == GRABTYPE_XI) + { + ErrorF(" xi1 event mask 0x%lx\n", + devGrab->implicitGrab ? (unsigned long) grab->deviceMask : + (unsigned long) grab->eventMask); + } + else if (grab->grabtype == GRABTYPE_XI2) + { + for (i = 0; i < EMASKSIZE; i++) + { + int print; + print = 0; + for (j = 0; j < XI2MASKSIZE; j++) + { + if (grab->xi2mask[i][j]) + { + print = 1; + break; + } + } + if (!print) + continue; + ErrorF(" xi2 event mask for device %d: 0x", dev->id); + for (j = 0; j < XI2MASKSIZE; j++) + ErrorF("%x", grab->xi2mask[i][j]); + ErrorF("\n"); + } + } + + if (devGrab->fromPassiveGrab) + { + ErrorF(" passive grab type %d, detail 0x%x, " + "activating key %d\n", grab->type, grab->detail.exact, + devGrab->activatingKey); + } + + ErrorF(" owner-events %s, kb %d ptr %d, confine %lx, cursor 0x%lx\n", + grab->ownerEvents ? "true" : "false", + grab->keyboardMode, grab->pointerMode, + grab->confineTo ? (unsigned long) grab->confineTo->drawable.id : 0, + grab->cursor ? (unsigned long) grab->cursor->id : 0); +} + +void +UngrabAllDevices(Bool kill_client) +{ + DeviceIntPtr dev; + ClientPtr client; + + ErrorF("Ungrabbing all devices%s; grabs listed below:\n", + kill_client ? " and killing their owners" : ""); + + for (dev = inputInfo.devices; dev; dev = dev->next) + { + if (!dev->deviceGrab.grab) + continue; + PrintDeviceGrabInfo(dev); + client = clients[CLIENT_ID(dev->deviceGrab.grab->resource)]; + if (!client || client->clientGone) + dev->deviceGrab.DeactivateGrab(dev); + CloseDownClient(client); + } + + ErrorF("End list of ungrabbed devices\n"); +} + GrabPtr CreateGrab( int client, diff --git a/hw/xfree86/dixmods/xkbPrivate.c b/hw/xfree86/dixmods/xkbPrivate.c index 9742eaf31..06d1c2b3d 100644 --- a/hw/xfree86/dixmods/xkbPrivate.c +++ b/hw/xfree86/dixmods/xkbPrivate.c @@ -13,6 +13,7 @@ #define XKBSRV_NEED_FILE_FUNCS #include +#include "dixgrabs.h" #include "os.h" #include "xf86.h" @@ -29,6 +30,20 @@ XkbDDXPrivate(DeviceIntPtr dev,KeyCode key,XkbAction *act) xf86ProcessActionEvent(ACTION_PREV_MODE, NULL); else if (strcasecmp(msgbuf, "+vmode")==0) xf86ProcessActionEvent(ACTION_NEXT_MODE, NULL); + else if (strcasecmp(msgbuf, "prgrbs")==0) { + DeviceIntPtr tmp; + xf86Msg(X_INFO, "Printing all currently active device grabs:\n"); + for (tmp = inputInfo.devices; tmp; tmp = tmp->next) + if (tmp->deviceGrab.grab) + PrintDeviceGrabInfo(tmp); + xf86Msg(X_INFO, "End list of active device grabs\n"); + } + else if (strcasecmp(msgbuf, "ungrab")==0) + UngrabAllDevices(FALSE); + else if (strcasecmp(msgbuf, "clsgrb")==0) + UngrabAllDevices(TRUE); + else if (strcasecmp(msgbuf, "prwins")==0) + PrintWindowTree(); } return 0; diff --git a/include/dixgrabs.h b/include/dixgrabs.h index 3b2a46d72..229c8bb53 100644 --- a/include/dixgrabs.h +++ b/include/dixgrabs.h @@ -28,6 +28,9 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. struct _GrabParameters; +extern void PrintDeviceGrabInfo(DeviceIntPtr dev); +extern void UngrabAllDevices(Bool kill_client); + extern GrabPtr CreateGrab( int /* client */, DeviceIntPtr /* device */, -- cgit v1.2.3