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lib/util: add server_id_set_disconnected() and server_id_is_disconnected()

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Utility functions for handling the special placeholder server-id value
for disconnected clients (to be used for durable handles).

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
This commit is contained in:
Michael Adam 2012-08-06 16:35:46 +02:00 committed by Stefan Metzmacher
parent 3cdf441da1
commit 471a853e34
2 changed files with 48 additions and 1 deletions
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12
lib/util/samba_util.h
View File

@ -904,4 +904,16 @@ char *server_id_str(TALLOC_CTX *mem_ctx, const struct server_id *id);
struct server_id server_id_from_string(uint32_t local_vnn,
const char *pid_string);
/**
* Set the serverid to the special value that represents a disconnected
* client for (e.g.) durable handles.
*/
void server_id_set_disconnected(struct server_id *id);
/**
* check whether a serverid is the special placeholder for
* a disconnected client
*/
bool server_id_is_disconnected(const struct server_id *id);
#endif /* _SAMBA_UTIL_H_ */

37
lib/util/server_id.c
View File

@ -43,7 +43,9 @@ bool server_id_equal(const struct server_id *p1, const struct server_id *p2)
char *server_id_str(TALLOC_CTX *mem_ctx, const struct server_id *id)
{
if (id->vnn == NONCLUSTER_VNN && id->task_id == 0) {
if (server_id_is_disconnected(id)) {
return talloc_strdup(mem_ctx, "disconnected");
} else if (id->vnn == NONCLUSTER_VNN && id->task_id == 0) {
return talloc_asprintf(mem_ctx,
"%llu",
(unsigned long long)id->pid);
@ -95,9 +97,42 @@ struct server_id server_id_from_string(uint32_t local_vnn,
} else if (sscanf(pid_string, "%llu", &pid) == 1) {
result.vnn = local_vnn;
result.pid = pid;
} else if (strcmp(pid_string, "disconnected") ==0) {
server_id_set_disconnected(&result);
} else {
result.vnn = NONCLUSTER_VNN;
result.pid = UINT64_MAX;
}
return result;
}
/**
* Set the serverid to the special value that represents a disconnected
* client for (e.g.) durable handles.
*/
void server_id_set_disconnected(struct server_id *id)
{
SMB_ASSERT(id != NULL);
id->pid = UINT64_MAX;
id->task_id = UINT32_MAX;
id->vnn = NONCLUSTER_VNN;
id->unique_id = SERVERID_UNIQUE_ID_NOT_TO_VERIFY;
return;
}
/**
* check whether a serverid is the special placeholder for
* a disconnected client
*/
bool server_id_is_disconnected(const struct server_id *id)
{
struct server_id dis;
SMB_ASSERT(id != NULL);
server_id_set_disconnected(&dis);
return server_id_equal(id, &dis);
}