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The scha_resourcetype_open(), scha_resourcetype_get(), and scha_resourcetype_close() functions are
used together to access information on a resource type that is used by the
Resource Group Manager (RGM) cluster facility.
scha_resourcetype_open() initializes access of the
resource type and returns a handle to be used by scha_resourcetype_get().
The rtname argument of scha_resourcetype_open() names the resource type to be accessed.
The handle argument is the address of a
variable to hold the value returned from the function call.
scha_resourcetype_get() accesses resource type information
as indicated by the tag argument. The tag argument should be a string value defined by a macro in
the <scha_tags.h> header file. Arguments
following the tag depend on the value of tag.
An additional argument following the tag may be needed to indicate a
cluster node from which the information is to be retrieved, or other information
specific to the tag. The last argument in the argument list is to be of a
type suitable type to hold the information indicated by tag. This is the "out" argument for the resource type information.
No value is returned for the out parameter if the function fails. Memory that
is allocated to hold information returned by scha_resourcetype_get() remains intact until scha_resourcetype_close()
is called on the handle used for scha_resourcetype_get().
scha_resourcetype_close() takes a handle argument returned from a previous call to scha_resourcetype_open(). It invalidates the handle and frees memory
allocated to return values to scha_resourcetype_get() calls
that were made with the handle. Note that, memory, if needed to return a value,
is allocated for each "get" call. Space allocated to return a value in one
call will not be overwritten and reused by subsequent calls.
Macros defined in <scha_tags.h>
that may be used as tag arguments to scha_resourcetype_get() follow. The type of the output argument and
any additional arguments are indicated. Structure and enum types are described
in scha_calls(3HA).
Optag Arguments
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Macros naming resource type properties are listed below. The value
of the named property of the resource's type is output.
-
SCHA_API_VERSION
- The output argument is of type int*.
-
SCHA_BOOT
- The
output argument is of type char **.
-
SCHA_FAILOVER
- The output argument is of type boolean_t *
-
SCHA_FINI
- The
output argument is of type char **.
-
SCHA_INIT
- The
output argument is of type char **.
-
SCHA_INIT_NODES
- The output argument is of type scha_initnodes_flag_t *.
-
SCHA_INSTALLED_NODES
- The output argument is of type scha_str_array_t **
-
SCHA_IS_LOGICAL_HOSTNAME
- The output argument is of type boolean_t *
-
SCHA_IS_SHARED_ADDRESS
- The output argument is of type boolean_t *.
-
SCHA_MONITOR_CHECK
- The output argument is of type char **.
-
SCHA_MONITOR_START
- The output argument is of type char **.
-
SCHA_MONITOR_STOP
- The output argument is of type char **.
-
SCHA_PKGLIST
- The output argument is of type scha_str_array_t **.
-
SCHA_POSTNET_STOP
- The output argument is of type char **.
-
SCHA_PRENET_START
- The output argument is of type char **.
-
SCHA_RESOURCE_LIST
- The output argument is of type scha_str_array_t**
-
SCHA_RT_BASEDIR
- The output argument is of type char **.
-
SCHA_RT_DESCRIPTION
- The output argument is of type char **.
-
SCHA_RT_SYSTEM
- The output argument is of type boolean_t *
-
SCHA_RT_VERSION
- The output argument is of type char **.
-
SCHA_SINGLE_INSTANCE
- The output argument is of type boolean_t *
-
SCHA_START
- The
output argument is of type char **.
-
SCHA_STOP
- The
output argument is of type char **.
-
SCHA_UPDATE
- The output argument is of type char **.
-
SCHA_VALIDATE
- The output argument is of type char **.
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