Notably, the DisplayName field was set to the same thing in both
sys.TestExample and mrg.TestMyService, which may explain the collision
reported in golang/go#59298.
Moreover, the adjective ”my” conveys no information whatsoever — we
shouldn't use it in tests or examples.
Also skip the tests that install services if GO_BUILDER_NAME is not
set, to reduce the likelihood of 'go test all' in a user's working
directory being mistaken for a malicious or compromised program.
Fixesgolang/go#59298.
Change-Id: Ib00bf7400bfaa34e1a1d49125c43b97019b53c82
Reviewed-on: https://go-review.googlesource.com/c/sys/+/481015
Reviewed-by: Carlos Amedee <carlos@golang.org>
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This method allows a user to list all Windows services which are
dependent upon a given service.
This commit makes use of the EnumDependentServices Windows API call.
Without this, a user would have to iterate through each service on the
system, and check if the given service is listed in each service's
dependencies list.
The implementation of ListDependentServices is mostly the same as
Mgr.ListServices, as the API calls behave in the same way.
Fixesgolang/go#56766
Change-Id: I9ec18c97afd02f48deef691ccdd5c26d6501add1
Reviewed-on: https://go-review.googlesource.com/c/sys/+/451363
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The os/signal package drops signal notifications if the channel is not
ready to receive immediately. To avoid dropping signals (for example,
while processing the other branch of a 'select'), the channel must be
buffered.
This fixes a mistake flagged by 'go vet ./...'.
Change-Id: I2a20dbe2aa27ae8ec009fff5e7be47e4409fdddd
Reviewed-on: https://go-review.googlesource.com/c/sys/+/465595
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This brings the algorithm more exactly in line with what .NET does for
the identically named function. Specifically, instead of using
OpenProcess, which requires rights that restricted services might not
have, we use NtQuerySystemInformation(SYSTEM_PROCESS_INFORMATION) to
find the parent process image name and session ID.
Fixesgolang/go#44921.
Change-Id: Ie2ad7521cf4c530037d086e61dbc2413e4e7777c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/372554
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The old service management code was written in assembly and communicated
over Windows events, which resulted in non-obvious control flow.
NewCallback makes it possible to rewrite all of this in vanilla Go. This
also enables the service test on the Go builders, as modifying system
services shouldn't be an issue there.
Change-Id: I8003b57d11d4469f762058c648a4b7733530eeb8
Reviewed-on: https://go-review.googlesource.com/c/sys/+/330010
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Alex copied this from a temporary thing I had written for the runtime
package. In runtime, you can't really access other packages like
syscall, so everything has to be very manual. But in x/sys, we can do
things properly. So this reimplements the function in a more straight
forward way.
Change-Id: I1634904bb1e10f33252954ce02d4b17ae56592e5
Reviewed-on: https://go-review.googlesource.com/c/sys/+/298830
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One thing the newer notification API does not do is automatically
provide the service exit code in its notifier response. It requires
querying manually. Unfortunately, we weren't propagating this
information up from the lower level struct, so this commit copys that
information over.
Change-Id: I70c683007ce34ffab6196329acefc8443f921ebe
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Currently, doing s.UpdateConfig(s.Config()) will destroy the service,
because s.Config() fails to populate the SidType member, but
UpdateConfig will set the SidType, so that expression effectively zeros
out the SidType. Fix this by having Config() fetch the SidType in the
same way that it fetches the other additional fields there, such as
DelayedStartUp.
Change-Id: Idb917ef1e942020499b411b7777b995c29f0e7d2
Reviewed-on: https://go-review.googlesource.com/c/sys/+/270897
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TestMyService uses the same service name as service in
golang.org/x/sys/windows/svc.TestExample.
https://build.golang.org sometimes schedules TestMyService and
TestExample to run at the same time. If that happens, tests fail,
because they were not designed to run in parallel.
This CL renames service in TestMyService, so it does not clash with
TestExample.
Fixesgolang/go#42211
Change-Id: I928c2ebbae77de3540f5ce16948fb96eeeed836d
Reviewed-on: https://go-review.googlesource.com/c/sys/+/267604
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TestExample normally stops and deletes test service at the end of the
test. But, if TestExample does not complete for some reason, test
service might remain running and installed.
There is some code that deletes "left over" test service before starting
the test. But that code fails, if service is running. Deletion only
works, if service is not running. This CL adds code to stop the "left
over" service so it can be deleted.
Update golang/go#42211
Change-Id: I826dd587063265c5b96076668c3704c0a7eaa3d8
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CL 244958 includes isWindowsService function that determines if a
process is running as a service. The code of the function is based on
public .Net implementation.
IsAnInteractiveSession function implements similar functionality, but
is based on an old Stackoverflow post., which is not as authoritative
as code written by Microsoft for their official product.
This change copies CL 244958 isWindowsService function into svc package
and makes it public. The intention is that future users will prefer
IsWindowsService to IsAnInteractiveSession.
Also this change adds "Deprecated" comment to IsAnInteractiveSession to
point future users to IsWindowsService.
Call to IsAnInteractiveSession is also replaced with IsWindowsService
in golang.org/x/sys/windows/svc/example package.
Change-Id: I4a33b7f590ee8161d1134d8e83668e9da4e6b434
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I noticed that we call syscall in servicemain without aligning stack.
That is against Windows rules, so align the stack as required.
I tried running this code with specifically non-aligned stack (I aligned
stack, and then subtracted 1 from SP) on my Windows 10 to test this
change. But it makes no difference on my Windows 10 PC - I built and run
golang.org/x/sys/windows/svc/example, and it runs successfully
regardless of stack alignment. But alignment might make difference on
other computers.
Maybe fixesgolang/go#40160
Change-Id: I351f7f730fba4aa6dc409a79de4ad737b4a0a7d4
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This CL fixes unsafe casts to slices that are missing length or capacity.
Running tests with -d=checkptr enabled may panic on casting unsafe.Pointer to a static array of large predefined length, that is most likely much bigger than the size of the actual array in memory. Checkptr check is not satisfied if slicing operator misses length and capacity arguments `(*[(1 << 30) - 1]uint16)(unsafe.Pointer(p))[:]`, or when there is no slicing at all `(*[(1 << 30) - 1]uint16)(unsafe.Pointer(p))`.
To find all potential cases I used `grep -nr ")(unsafe.Pointer(" ./windows`, then filtered out safe casts when object size is always static and known at compile time.
To reproduce the issue run tests with checkptr enabled `go test -a -gcflags=all=-d=checkptr ./windows/...`.
Updates golang/go#34972Fixesgolang/go#38355
Change-Id: I9dd2084b4f9fb7618cdb140fb2f38b56b6d6cc04
GitHub-Last-Rev: 73288ad18a
GitHub-Pull-Request: golang/sys#65
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From MSDN on CreateServiceW:
The returned handle is only valid for the process that called
CreateService. It can be closed by calling the CloseServiceHandle
function.
This isn't an actual kernel object to be closed with CloseHandle.
Change-Id: Iee225a666576d57a6c4864abef20206d54cbbce2
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The SCM can be locked by NT. While traditionally any process could lock
the SCM using "LockServiceDatabase", Microsoft removed this
functionality because it created so many bugs, and that function now
does nothing. However, the system itself, via the "NT Service Control
Manager", is still allowed to lock the SCM.
For example, at boot time on Windows 8.1, the SCM is locked after a
service is started until that service reports itself in a running state.
This poses a bit of a problem: it's useful to install device drivers
from inside services as part of their initialization, and mark the
service as having started only after the device has installed. But
device installation might potentially load new drivers, and drivers
themselves exist as a special type of service. This means that if a
driver is installed before marking the service as started, the entire
SCM will deadlock, and the OS will be partially unresponsive for a
minute or two.
Fortunately Microsoft supplies an API for exactly this purpose. The
solution is to mark the service as started before installing device
drivers, only under the circumstance that the SCM is locked. So, this
commit adds the proper API for determining this. It can be used like
this:
if m, err := mgr.Connect(); err == nil {
if lockStatus, err := m.LockStatus(); err == nil && lockStatus.IsLocked {
log.Printf("SCM locked for %v by %s, marking service as started", lockStatus.Age, lockStatus.Owner)
changes <- svc.Status{State: svc.Running}
}
m.Disconnect()
}
deviceDriver.Install()
This creates messages like the following, indicating that this API
works:
SCM locked for 1s by .\NT Service Control Manager, marking service as started
Change-Id: Ic2f5b387e23efc3a287b2ab96ff84b357b712e36
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Many service attributes are settable using the ordinary CreateService
function, but ones added later in Windows need to be set using the
ChangeServiceConfig2 function. One of these is the Description field,
which is nicely plumbed behind the scenes, so that users of the API can
set it, and the mgr package will just figure out what to do with it.
Another one that works exactly the same way is SidType. Support for its
constants was added in 30999d6 ("windows: add missing service
constants"), but it wasn't actually built into the mgr package's
configuration struct, creating inconstancies in interface.
This commit rectifies that by adding proper support to mgr's config
struct.
Change-Id: I4f148f2d2477a03a65e8a571a8401392f6fe9f28
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The two functions have the same levels of compatibility, but this latter
one gives us access to the process ID, which is important for things
like WFP whitelisting. The change required is fairly trivial too.
Change-Id: Ifb6b3ee3e897202b9cffa1388c53c25cbcfede61
Reviewed-on: https://go-review.googlesource.com/c/sys/+/173666
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While the types_windows file previously had a small handful of types,
this forced application code to have an awkward mixture of artisanal
error constants and factory-ready ones. This commit adds the missing
ones and separates them into a new file, since they are quite numerous.
These also preserve the order of winerr.h, which should make it somewhat
easier to import new ones in the future.
Fixesgolang/go#31360
Change-Id: If2abc507a8884ec1641f0b17fe0c612a950d3644
Reviewed-on: https://go-review.googlesource.com/c/sys/+/170918
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These DLLs, well advapi32.dll in particular, are vulnerable to classic
DLL directory injection attacks. The rest of x/sys/windows moved over to
the safe system loader, but apparently the svc package was forgotten.
This tidies up that oversight.
Change-Id: I330fa752cf2d49ccc5cf1bd60fb4bd612bd2b6b0
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ctlHandler is passed to RegisterServiceCtrlHandlerEx as a callback
function. But all ctlHandler parameters have to be uintptr aligned
regardless of their type.
Adjust ctlHandler parameters, so they are aligned accordingly.
Also uncomment part of TestExample that verifies passing of
ChangeRequest.Context.
Fixesgolang/go#25660
Change-Id: Ie96fa5c78b911ad9df6775f5c49e7f6d56464f6b
Reviewed-on: https://go-review.googlesource.com/c/158698
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
New Context field will be used in the following CL to test
ctlHandler parameter alignments.
Also adjust TestExample to pass hard coded Context value of 123456
to test service, and verify that correct value is logged. Final
part of the test is commented out, and will be adjusted in the next
CL.
Updates golang/go#25660
Change-Id: Iad2896ae497ee1edc0d62655eaf08671ec2651c5
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Added configuration options for a windows service recovery settings.
New configurations include modifying the reboot message, or command
to be run when a service fails, and getting the current reboot message
or command.
Fixesgolang/go#23239
Change-Id: I3e501d66e97745b7536fd654aee2bba488083e6d
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Added configuration options for a windows service recovery settings.
Current configurations include modifying actions taken when a service
fails, setting the reset period, and getting the current recovery
settings.
Updates golang/go#23239
Change-Id: I4e91b2068122731e6eba3332afb0fe300b298c97
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Follow CL 20022 and consistently use single space after a period in
documentation.
Generated with:
$ perl -i -npe 's,^(\s*// .+[a-z]\.) +([A-Z]),$1 $2,' $(git grep -l -E '^\s*//(.+\.) +([A-Z])')
Change-Id: Ia29ad823668f060e81293e848a79fc4b4857d94b
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Add the remaining AcceptX commands (AcceptParamChange,
AcceptNetBindChange, AcceptHardwareProfileChange, AcceptPowerEvent, and
AcceptSessionChange) to the windows/svc package. Also add support for
these to updateStatus such that a service can actually accept these
commands.
Change-Id: I11191e7798489b3222a3e76ba55129f10fd202ab
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The args passed to Mgr.CreateService end up as the command-line
arguments (available via os.Args), not as the args passed to
Svc.Handler.Execute.
Fixesgolang/go#20440
Change-Id: I55a1ec3432b377082c018fe960114c96350e8978
Reviewed-on: https://go-review.googlesource.com/43714
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This allows services written with this library to register for more
advanced notifications like SERVICE_CONTROL_DEVICEEVENT for example.
Also the code now exposes the service status handle through a new
api call, because the handle is needed to register for such
notifications and can not be obtained by any other means.
Change-Id: I80796e1dd9d94ec9d6c236d0413b17288c67fe1f
Reviewed-on: https://go-review.googlesource.com/42812
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It seems some Windows versions requires you to be
an Administrator to manage services. Just google for
"openscmanager access denied windows 2008" or similar.
Fixesgolang/go#11156.
Change-Id: I4b09d244a61179ece7a1319234e5c3199423cbe9
Reviewed-on: https://go-review.googlesource.com/10933
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
