#include "includes.h"
-/* set these to define the limits of the server. NOTE These are on a
- per-client basis. Thus any one machine can't connect to more than
- MAX_CONNECTIONS services, but any number of machines may connect at
- one time. */
-#define MAX_CONNECTIONS 128
+/* The connections bitmap is expanded in increments of BITMAP_BLOCK_SZ. The
+ * maximum size of the bitmap is the largest positive integer, but you will hit
+ * the "max connections" limit, looong before that.
+ */
+#define BITMAP_BLOCK_SZ 128
static connection_struct *Connections;
****************************************************************************/
void conn_init(void)
{
- bmap = bitmap_allocate(MAX_CONNECTIONS);
+ bmap = bitmap_allocate(BITMAP_BLOCK_SZ);
}
/****************************************************************************
{
connection_struct *conn;
for (conn=Connections;conn;conn=conn->next) {
- if (conn->service == snum) {
+ if (conn->params->service == snum) {
return(True);
}
}
/****************************************************************************
find a conn given a cnum
****************************************************************************/
-connection_struct *conn_find(int cnum)
+connection_struct *conn_find(unsigned cnum)
{
int count=0;
connection_struct *conn;
****************************************************************************/
connection_struct *conn_new(void)
{
+ TALLOC_CTX *mem_ctx;
connection_struct *conn;
int i;
+ int find_offset = 1;
- i = bitmap_find(bmap, 1);
+find_again:
+ i = bitmap_find(bmap, find_offset);
if (i == -1) {
- DEBUG(1,("ERROR! Out of connection structures\n"));
+ /* Expand the connections bitmap. */
+ int oldsz = bmap->n;
+ int newsz = bmap->n + BITMAP_BLOCK_SZ;
+ struct bitmap * nbmap;
+
+ if (newsz <= oldsz) {
+ /* Integer wrap. */
+ DEBUG(0,("ERROR! Out of connection structures\n"));
+ return NULL;
+ }
+
+ DEBUG(4,("resizing connections bitmap from %d to %d\n",
+ oldsz, newsz));
+
+ nbmap = bitmap_allocate(newsz);
+ if (!nbmap) {
+ DEBUG(0,("ERROR! malloc fail.\n"));
+ return NULL;
+ }
+
+ bitmap_copy(nbmap, bmap);
+ bitmap_free(bmap);
+
+ bmap = nbmap;
+ find_offset = oldsz; /* Start next search in the new portion. */
+
+ goto find_again;
+ }
+
+ /* The bitmap position is used below as the connection number
+ * conn->cnum). This ends up as the TID field in the SMB header,
+ * which is limited to 16 bits (we skip 0xffff which is the
+ * NULL TID).
+ */
+ if (i > 65534) {
+ DEBUG(0, ("Maximum connection limit reached\n"));
return NULL;
}
- conn = (connection_struct *)malloc(sizeof(*conn));
- if (!conn) return NULL;
+ if ((mem_ctx=talloc_init("connection_struct"))==NULL) {
+ DEBUG(0,("talloc_init(connection_struct) failed!\n"));
+ return NULL;
+ }
- ZERO_STRUCTP(conn);
+ if (!(conn=TALLOC_ZERO_P(mem_ctx, connection_struct)) ||
+ !(conn->params = TALLOC_P(mem_ctx, struct share_params))) {
+ DEBUG(0,("talloc_zero() failed!\n"));
+ TALLOC_FREE(mem_ctx);
+ return NULL;
+ }
+ conn->mem_ctx = mem_ctx;
conn->cnum = i;
bitmap_set(bmap, i);
}
/****************************************************************************
-close all conn structures
+ Close all conn structures.
****************************************************************************/
+
void conn_close_all(void)
{
connection_struct *conn, *next;
for (conn=Connections;conn;conn=next) {
next=conn->next;
+ set_current_service(conn, 0, True);
close_cnum(conn, conn->vuid);
}
}
for (conn=Connections;conn;conn=next) {
next=conn->next;
+
+ /* Update if connection wasn't idle. */
+ if (conn->lastused != conn->lastused_count) {
+ conn->lastused = t;
+ conn->lastused_count = t;
+ }
+
/* close dirptrs on connections that are idle */
- if ((t-conn->lastused) > DPTR_IDLE_TIMEOUT)
+ if ((t-conn->lastused) > DPTR_IDLE_TIMEOUT) {
dptr_idlecnum(conn);
+ }
- if (conn->num_files_open > 0 ||
- (t-conn->lastused)<deadtime)
+ if (conn->num_files_open > 0 || (t-conn->lastused)<deadtime) {
allidle = False;
+ }
}
/*
}
/****************************************************************************
-clear a vuid out of the validity cache, and as the 'owner' of a connection.
+ Clear a vuid out of the validity cache, and as the 'owner' of a connection.
****************************************************************************/
+
void conn_clear_vuid_cache(uint16 vuid)
{
connection_struct *conn;
- int i;
+ unsigned int i;
for (conn=Connections;conn;conn=conn->next) {
if (conn->vuid == vuid) {
}
for (i=0;i<conn->vuid_cache.entries && i< VUID_CACHE_SIZE;i++) {
- if (conn->vuid_cache.list[i] == vuid) {
- conn->vuid_cache.list[i] = UID_FIELD_INVALID;
+ if (conn->vuid_cache.array[i].vuid == vuid) {
+ struct vuid_cache_entry *ent = &conn->vuid_cache.array[i];
+ ent->vuid = UID_FIELD_INVALID;
+ ent->read_only = False;
+ ent->admin_user = False;
}
}
}
}
/****************************************************************************
- Free a conn structure.
+ Free a conn structure - internal part.
****************************************************************************/
-void conn_free(connection_struct *conn)
+void conn_free_internal(connection_struct *conn)
{
- smb_vfs_handle_struct *handle, *thandle;
- void (*done_fptr)(connection_struct *the_conn);
+ vfs_handle_struct *handle = NULL, *thandle = NULL;
+ TALLOC_CTX *mem_ctx = NULL;
+ struct trans_state *state = NULL;
/* Free vfs_connection_struct */
- handle = conn->vfs_private;
+ handle = conn->vfs_handles;
while(handle) {
- /* Close dlopen() handle */
- done_fptr = (void (*)(connection_struct *))sys_dlsym(handle->handle, "vfs_done");
-
- if (done_fptr == NULL) {
- DEBUG(3, ("No vfs_done() symbol found in module with handle %p, ignoring\n", handle->handle));
- } else {
- done_fptr(conn);
- }
- sys_dlclose(handle->handle);
- DLIST_REMOVE(conn->vfs_private, handle);
+ DLIST_REMOVE(conn->vfs_handles, handle);
thandle = handle->next;
- SAFE_FREE(handle);
+ if (handle->free_data)
+ handle->free_data(&handle->data);
handle = thandle;
}
- DLIST_REMOVE(Connections, conn);
-
- if (conn->ngroups && conn->groups) {
- SAFE_FREE(conn->groups);
- conn->ngroups = 0;
+ /* Free any pending transactions stored on this conn. */
+ for (state = conn->pending_trans; state; state = state->next) {
+ /* state->setup is a talloc child of state. */
+ SAFE_FREE(state->param);
+ SAFE_FREE(state->data);
}
free_namearray(conn->veto_list);
free_namearray(conn->hide_list);
free_namearray(conn->veto_oplock_list);
+ free_namearray(conn->aio_write_behind_list);
string_free(&conn->user);
string_free(&conn->dirpath);
string_free(&conn->connectpath);
string_free(&conn->origpath);
- bitmap_clear(bmap, conn->cnum);
- num_open--;
-
+ mem_ctx = conn->mem_ctx;
ZERO_STRUCTP(conn);
- SAFE_FREE(conn);
+ talloc_destroy(mem_ctx);
}
+/****************************************************************************
+ Free a conn structure.
+****************************************************************************/
+
+void conn_free(connection_struct *conn)
+{
+ DLIST_REMOVE(Connections, conn);
+
+ bitmap_clear(bmap, conn->cnum);
+ num_open--;
+ conn_free_internal(conn);
+}
+
/****************************************************************************
receive a smbcontrol message to forcibly unmount a share
the message contains just a share name and all instances of that
share are unmounted
the special sharename '*' forces unmount of all shares
****************************************************************************/
-void msg_force_tdis(int msg_type, pid_t pid, void *buf, size_t len)
+void msg_force_tdis(int msg_type, struct process_id pid, void *buf, size_t len,
+ void *private_data)
{
connection_struct *conn, *next;
fstring sharename;
- fstrcpy(sharename, buf);
+ fstrcpy(sharename, (const char *)buf);
if (strcmp(sharename, "*") == 0) {
DEBUG(1,("Forcing close of all shares\n"));
for (conn=Connections;conn;conn=next) {
next=conn->next;
- if (strequal(lp_servicename(conn->service), sharename)) {
+ if (strequal(lp_servicename(SNUM(conn)), sharename)) {
DEBUG(1,("Forcing close of share %s cnum=%d\n",
sharename, conn->cnum));
close_cnum(conn, (uint16)-1);
git.samba.org / samba.git / blobdiff