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264 lines
7.2 KiB
Plaintext
264 lines
7.2 KiB
Plaintext
= winfsp/launch.h
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:author: (C) 2015-2018 Bill Zissimopoulos
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:toc: preamble
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:toc-title:
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WinFsp Launch API.
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In order to use the WinFsp Launch API a program must include <winfsp/launch.h>
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and link with the winfsp$$_$$x64.dll (or winfsp$$_$$x86.dll) library.
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== Launch Control
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=== Functions
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*FspLaunchCallLauncherPipe* - Call launcher pipe.
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[source,c]
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----
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FSP_API NTSTATUS FspLaunchCallLauncherPipe(
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WCHAR Command,
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ULONG Argc,
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PWSTR *Argv,
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ULONG *Argl,
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PWSTR Buffer,
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PULONG PSize,
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PULONG PLauncherError);
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----
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*Parameters*
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- _Command_ - Launcher command to send. For example, the 'L' launcher command instructs
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the launcher to list all running service instances.
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- _Argc_ - Command argument count. May be 0.
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- _Argv_ - Command argument array. May be NULL.
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- _Argl_ - Command argument length array. May be NULL. If this is NULL all command arguments
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are assumed to be NULL-terminated strings. It is also possible for specific arguments
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to be NULL-terminated; in this case pass -1 in the corresponding Argl position.
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- _Buffer_ - Buffer that receives the command response. May be NULL.
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- _PSize_ - Pointer to a ULONG. On input it contains the size of the Buffer. On output it
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contains the number of bytes transferred. May be NULL.
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- _PLauncherError_ - Receives the launcher error if any. This is always a Win32 error code. May not be NULL.
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*Return Value*
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STATUS$$_$$SUCCESS if the command is sent successfully to the launcher, even if the launcher
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returns an error. Other status codes indicate a communication error. Launcher errors are
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reported through PLauncherError.
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*Discussion*
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This function is used to send a command to the launcher and receive a response.
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*FspLaunchGetInfo* - Get information about a service instance.
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[source,c]
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----
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FSP_API NTSTATUS FspLaunchGetInfo(
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PWSTR ClassName,
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PWSTR InstanceName,
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PWSTR Buffer,
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PULONG PSize,
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PULONG PLauncherError);
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----
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*Parameters*
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- _ClassName_ - Class name of the service instance to stop.
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- _InstanceName_ - Instance name of the service instance to stop.
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- _Buffer_ - Buffer that receives the command response. May be NULL.
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- _PSize_ - Pointer to a ULONG. On input it contains the size of the Buffer. On output it
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contains the number of bytes transferred. May be NULL.
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- _PLauncherError_ - Receives the launcher error if any. This is always a Win32 error code. May not be NULL.
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*Return Value*
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STATUS$$_$$SUCCESS if the command is sent successfully to the launcher, even if the launcher
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returns an error. Other status codes indicate a communication error. Launcher errors are
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reported through PLauncherError.
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*Discussion*
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The information is a list of NULL-terminated strings: the class name of the service instance,
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the instance name of the service instance and the full command line used to start the service
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instance.
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*FspLaunchGetNameList* - List service instances.
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[source,c]
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----
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FSP_API NTSTATUS FspLaunchGetNameList(
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PWSTR Buffer,
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PULONG PSize,
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PULONG PLauncherError);
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----
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*Parameters*
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- _Buffer_ - Buffer that receives the command response. May be NULL.
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- _PSize_ - Pointer to a ULONG. On input it contains the size of the Buffer. On output it
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contains the number of bytes transferred. May be NULL.
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- _PLauncherError_ - Receives the launcher error if any. This is always a Win32 error code. May not be NULL.
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*Return Value*
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STATUS$$_$$SUCCESS if the command is sent successfully to the launcher, even if the launcher
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returns an error. Other status codes indicate a communication error. Launcher errors are
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reported through PLauncherError.
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*Discussion*
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The information is a list of pairs of NULL-terminated strings. Each pair contains the class
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name and instance name of a service instance. All currently running service instances are
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listed.
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*FspLaunchStart* - Start a service instance.
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[source,c]
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----
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FSP_API NTSTATUS FspLaunchStart(
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PWSTR ClassName,
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PWSTR InstanceName,
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ULONG Argc,
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PWSTR *Argv,
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BOOLEAN HasSecret,
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PULONG PLauncherError);
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----
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*Parameters*
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- _ClassName_ - Class name of the service instance to start.
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- _InstanceName_ - Instance name of the service instance to start.
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- _Argc_ - Service instance argument count. May be 0.
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- _Argv_ - Service instance argument array. May be NULL.
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- _HasSecret_ - Whether the last argument in Argv is assumed to be a secret (e.g. password) or not.
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Secrets are passed to service instances through standard input rather than the command
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line.
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- _PLauncherError_ - Receives the launcher error if any. This is always a Win32 error code. May not be NULL.
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*Return Value*
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STATUS$$_$$SUCCESS if the command is sent successfully to the launcher, even if the launcher
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returns an error. Other status codes indicate a communication error. Launcher errors are
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reported through PLauncherError.
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*FspLaunchStop* - Stop a service instance.
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[source,c]
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----
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FSP_API NTSTATUS FspLaunchStop(
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PWSTR ClassName,
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PWSTR InstanceName,
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PULONG PLauncherError);
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----
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*Parameters*
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- _ClassName_ - Class name of the service instance to stop.
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- _InstanceName_ - Instance name of the service instance to stop.
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- _PLauncherError_ - Receives the launcher error if any. This is always a Win32 error code. May not be NULL.
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*Return Value*
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STATUS$$_$$SUCCESS if the command is sent successfully to the launcher, even if the launcher
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returns an error. Other status codes indicate a communication error. Launcher errors are
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reported through PLauncherError.
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== Service Registry
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=== Functions
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*FspLaunchRegFreeRecord* - Free a service registry record.
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[source,c]
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----
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FSP_API VOID FspLaunchRegFreeRecord(
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FSP_LAUNCH_REG_RECORD *Record);
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----
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*Parameters*
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- _Record_ - The service record to free.
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*See Also*
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- FspLaunchRegGetRecord
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*FspLaunchRegGetRecord* - Get a service registry record.
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[source,c]
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----
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FSP_API NTSTATUS FspLaunchRegGetRecord(
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PWSTR ClassName,
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PWSTR Agent,
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FSP_LAUNCH_REG_RECORD **PRecord);
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----
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*Parameters*
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- _ClassName_ - The service class name.
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- _Agent_ - The name of the agent that is retrieving the service record. This API matches
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the supplied Agent against the Agent in the service record and it only returns
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the record if they match. Pass NULL to match any Agent.
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- _PRecord_ - Pointer to a record pointer. Memory for the service record will be allocated
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and a pointer to it will be stored at this address. This memory must be later
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freed using FspLaunchRegFreeRecord.
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*Return Value*
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STATUS$$_$$SUCCESS or error code.
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*See Also*
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- FspLaunchRegFreeRecord
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*FspLaunchRegSetRecord* - Add/change/delete a service registry record.
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[source,c]
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----
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FSP_API NTSTATUS FspLaunchRegSetRecord(
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PWSTR ClassName,
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const FSP_LAUNCH_REG_RECORD *Record);
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----
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*Parameters*
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- _ClassName_ - The service class name.
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- _Record_ - The record to set in the registry. If NULL, the registry record is deleted.
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*Return Value*
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STATUS$$_$$SUCCESS or error code.
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=== Typedefs
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*FSP$$_$$LAUNCH$$_$$REG$$_$$RECORD* - Service registry record.
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[source,c]
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----
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typedef struct _FSP_LAUNCH_REG_RECORD {
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PWSTR Agent;
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PWSTR Executable;
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PWSTR CommandLine;
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PWSTR WorkDirectory;
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PWSTR RunAs;
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PWSTR Security;
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PVOID Reserved0[6];
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ULONG JobControl;
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ULONG Credentials;
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ULONG Reserved1[6];
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UINT8 Buffer[];
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} FSP_LAUNCH_REG_RECORD;
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----
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