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-rw-r--r--source3/include/dlinklist.h52
-rw-r--r--source3/include/includes.h2
-rw-r--r--source3/lib/util_hnd.c17
-rw-r--r--source3/rpc_server/srv_lsa_hnd.c17
-rw-r--r--source3/rpc_server/srv_pipe_hnd.c17
-rw-r--r--source3/smbd/conn.c27
-rw-r--r--source3/smbd/files.c47
7 files changed, 84 insertions, 95 deletions
diff --git a/source3/include/dlinklist.h b/source3/include/dlinklist.h
new file mode 100644
index 0000000000..8810eca5b9
--- /dev/null
+++ b/source3/include/dlinklist.h
@@ -0,0 +1,52 @@
+/*
+ Unix SMB/Netbios implementation.
+ Version 1.9.
+ some simple double linked list macros
+ Copyright (C) Andrew Tridgell 1998
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/* To use these macros you must have a structure containing a next and
+ prev pointer */
+
+
+/* hook into the front of the list */
+#define DLIST_ADD(list, p) \
+ if (!(list)) { \
+ (list) = (p); \
+ (p)->next = (p)->prev = NULL; \
+ } else { \
+ (list)->prev = (p); \
+ (p)->next = (list); \
+ (p)->prev = NULL; \
+ (list) = (p); \
+ }
+
+
+/* remove an element from a list */
+#define DLIST_REMOVE(list, p) \
+ if ((p) == (list)) { \
+ (list) = (p)->next; \
+ if (list) (list)->prev = NULL; \
+ } else { \
+ (p)->prev->next = (p)->next; \
+ if ((p)->next) (p)->next->prev = (p)->prev; \
+ }
+
+/* promote an element to the top of the list */
+#define DLIST_PROMOTE(list, p) \
+ DLIST_REMOVE(list, p) \
+ DLIST_ADD(list, p)
diff --git a/source3/include/includes.h b/source3/include/includes.h
index 4ced157359..3fd5f7be08 100644
--- a/source3/include/includes.h
+++ b/source3/include/includes.h
@@ -314,6 +314,8 @@ extern int errno;
/* Lists, trees, caching, datbase... */
#include "ubi_sLinkList.h"
#include "ubi_dLinkList.h"
+#include "dlinklist.h"
+
#ifndef UBI_BINTREE_H
#include "ubi_Cache.h"
#endif /* UBI_BINTREE_H */
diff --git a/source3/lib/util_hnd.c b/source3/lib/util_hnd.c
index 2fc2c73ea3..d65116e646 100644
--- a/source3/lib/util_hnd.c
+++ b/source3/lib/util_hnd.c
@@ -124,14 +124,7 @@ BOOL open_lsa_policy_hnd(POLICY_HND *hnd)
bitmap_set(bmap, i);
- /* hook into the front of the list */
- if (!Policy) {
- Policy = p;
- } else {
- Policy->prev = p;
- p->next = Policy;
- Policy = p;
- }
+ DLIST_ADD(Policy, p);
DEBUG(4,("Opened policy hnd[%x] ", i));
dump_data(4, (char *)hnd->data, sizeof(hnd->data));
@@ -303,13 +296,7 @@ BOOL close_lsa_policy_hnd(POLICY_HND *hnd)
DEBUG(3,("Closed policy name pnum=%x\n", p->pnum));
- if (p == Policy) {
- Policy = p->next;
- if (Policy) Policy->prev = NULL;
- } else {
- p->prev->next = p->next;
- if (p->next) p->next->prev = p->prev;
- }
+ DLIST_REMOVE(Policy, p);
bitmap_clear(bmap, p->pnum);
diff --git a/source3/rpc_server/srv_lsa_hnd.c b/source3/rpc_server/srv_lsa_hnd.c
index 2fc2c73ea3..d65116e646 100644
--- a/source3/rpc_server/srv_lsa_hnd.c
+++ b/source3/rpc_server/srv_lsa_hnd.c
@@ -124,14 +124,7 @@ BOOL open_lsa_policy_hnd(POLICY_HND *hnd)
bitmap_set(bmap, i);
- /* hook into the front of the list */
- if (!Policy) {
- Policy = p;
- } else {
- Policy->prev = p;
- p->next = Policy;
- Policy = p;
- }
+ DLIST_ADD(Policy, p);
DEBUG(4,("Opened policy hnd[%x] ", i));
dump_data(4, (char *)hnd->data, sizeof(hnd->data));
@@ -303,13 +296,7 @@ BOOL close_lsa_policy_hnd(POLICY_HND *hnd)
DEBUG(3,("Closed policy name pnum=%x\n", p->pnum));
- if (p == Policy) {
- Policy = p->next;
- if (Policy) Policy->prev = NULL;
- } else {
- p->prev->next = p->next;
- if (p->next) p->next->prev = p->prev;
- }
+ DLIST_REMOVE(Policy, p);
bitmap_clear(bmap, p->pnum);
diff --git a/source3/rpc_server/srv_pipe_hnd.c b/source3/rpc_server/srv_pipe_hnd.c
index 368bf013a0..b030ee0e90 100644
--- a/source3/rpc_server/srv_pipe_hnd.c
+++ b/source3/rpc_server/srv_pipe_hnd.c
@@ -91,14 +91,7 @@ pipes_struct *open_rpc_pipe_p(char *pipe_name,
p = (pipes_struct *)malloc(sizeof(*p));
if (!p) return NULL;
- /* hook into the front of the list */
- if (!Pipes) {
- Pipes = p;
- } else {
- Pipes->prev = p;
- p->next = Pipes;
- Pipes = p;
- }
+ DLIST_ADD(Pipes, p);
bitmap_set(bmap, i);
i += PIPE_HANDLE_OFFSET;
@@ -292,13 +285,7 @@ BOOL close_rpc_pipe_hnd(pipes_struct *p, connection_struct *conn)
DEBUG(4,("closed pipe name %s pnum=%x (pipes_open=%d)\n",
p->name, p->pnum, pipes_open));
- if (p == Pipes) {
- Pipes = p->next;
- if (Pipes) Pipes->prev = NULL;
- } else {
- p->prev->next = p->next;
- if (p->next) p->next->prev = p->prev;
- }
+ DLIST_REMOVE(Pipes, p);
memset(p, 0, sizeof(*p));
diff --git a/source3/smbd/conn.c b/source3/smbd/conn.c
index b110e8d082..2afbfb7d7e 100644
--- a/source3/smbd/conn.c
+++ b/source3/smbd/conn.c
@@ -72,10 +72,16 @@ find a conn given a cnum
****************************************************************************/
connection_struct *conn_find(int cnum)
{
+ int count=0;
connection_struct *conn;
- for (conn=Connections;conn;conn=conn->next) {
- if (conn->cnum == cnum) return conn;
+ for (conn=Connections;conn;conn=conn->next,count++) {
+ if (conn->cnum == cnum) {
+ if (count > 10) {
+ DLIST_PROMOTE(Connections, conn);
+ }
+ return conn;
+ }
}
return NULL;
@@ -114,14 +120,7 @@ connection_struct *conn_new(void)
string_init(&conn->connectpath,"");
string_init(&conn->origpath,"");
- /* hook into the front of the list */
- if (!Connections) {
- Connections = conn;
- } else {
- Connections->prev = conn;
- conn->next = Connections;
- Connections = conn;
- }
+ DLIST_ADD(Connections, conn);
return conn;
}
@@ -165,13 +164,7 @@ free a conn structure
****************************************************************************/
void conn_free(connection_struct *conn)
{
- if (conn == Connections) {
- Connections = conn->next;
- if (Connections) Connections->prev = NULL;
- } else {
- conn->prev->next = conn->next;
- if (conn->next) conn->next->prev = conn->prev;
- }
+ DLIST_REMOVE(Connections, conn);
if (conn->ngroups && conn->groups) {
free(conn->groups);
diff --git a/source3/smbd/files.c b/source3/smbd/files.c
index 7bd5501de5..fa1b8f3bac 100644
--- a/source3/smbd/files.c
+++ b/source3/smbd/files.c
@@ -100,14 +100,7 @@ files_struct *file_new(void )
fsp->fnum = i + FILE_HANDLE_OFFSET;
string_init(&fsp->fsp_name,"");
- /* hook into the front of the list */
- if (!Files) {
- Files = fsp;
- } else {
- Files->prev = fsp;
- fsp->next = Files;
- Files = fsp;
- }
+ DLIST_ADD(Files, fsp);
DEBUG(5,("allocated file structure %d (%d used)\n",
i, files_used));
@@ -180,14 +173,7 @@ file_fd_struct *fd_get_new(void)
bitmap_set(fd_bmap, i);
fd_ptr_used++;
- /* hook into the front of the list */
- if (!FileFd) {
- FileFd = fd_ptr;
- } else {
- FileFd->prev = fd_ptr;
- fd_ptr->next = FileFd;
- FileFd = fd_ptr;
- }
+ DLIST_ADD(FileFd, fd_ptr);
DEBUG(5,("allocated fd_ptr structure %d (%d used)\n",
i, fd_ptr_used));
@@ -269,14 +255,18 @@ find a fsp given a device, inode and timevalue
****************************************************************************/
files_struct *file_find_dit(int dev, int inode, struct timeval *tval)
{
+ int count=0;
files_struct *fsp;
- for (fsp=Files;fsp;fsp=fsp->next) {
+ for (fsp=Files;fsp;fsp=fsp->next,count++) {
if (fsp->open &&
fsp->fd_ptr->dev == dev &&
fsp->fd_ptr->inode == inode &&
fsp->open_time.tv_sec == tval->tv_sec &&
fsp->open_time.tv_usec == tval->tv_usec) {
+ if (count > 10) {
+ DLIST_PROMOTE(Files, fsp);
+ }
return fsp;
}
}
@@ -320,13 +310,7 @@ free up a fd_ptr
****************************************************************************/
static void fd_ptr_free(file_fd_struct *fd_ptr)
{
- if (fd_ptr == FileFd) {
- FileFd = fd_ptr->next;
- if (FileFd) FileFd->prev = NULL;
- } else {
- fd_ptr->prev->next = fd_ptr->next;
- if (fd_ptr->next) fd_ptr->next->prev = fd_ptr->prev;
- }
+ DLIST_REMOVE(FileFd, fd_ptr);
bitmap_clear(fd_bmap, fd_ptr->fdnum);
fd_ptr_used--;
@@ -346,13 +330,7 @@ free up a fsp
****************************************************************************/
void file_free(files_struct *fsp)
{
- if (fsp == Files) {
- Files = fsp->next;
- if (Files) Files->prev = NULL;
- } else {
- fsp->prev->next = fsp->next;
- if (fsp->next) fsp->next->prev = fsp->prev;
- }
+ DLIST_REMOVE(Files, fsp);
string_free(&fsp->fsp_name);
@@ -381,16 +359,19 @@ get a fsp from a packet given the offset of a 16 bit fnum
****************************************************************************/
files_struct *file_fsp(char *buf, int where)
{
- int fnum;
+ int fnum, count=0;
files_struct *fsp;
if (chain_fsp) return chain_fsp;
fnum = SVAL(buf, where);
- for (fsp=Files;fsp;fsp=fsp->next) {
+ for (fsp=Files;fsp;fsp=fsp->next, count++) {
if (fsp->fnum == fnum) {
chain_fsp = fsp;
+ if (count > 10) {
+ DLIST_PROMOTE(Files, fsp);
+ }
return fsp;
}
}
generated by cgit (git 2.34.1) at 2024-07-14 02:18:33 +0000