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authorJeff Layton <jlayton@redhat.com>2010-04-24 15:57:43 +0400
committerSteve French <sfrench@us.ibm.com>2010-04-26 22:55:28 +0400
commit36988c76f007738cad5fe1c873a5fb0cda7eb2f6 (patch)
tree429a4dec9098546956e658b45df6f1b0a5d348a4 /fs
parenta5fc4ce01867842f6a9cc317035df3081302bffc (diff)
downloadlinux-36988c76f007738cad5fe1c873a5fb0cda7eb2f6.tar.xz
cifs: move SMB session creation code into separate function
...it's mostly part of cifs_mount. Break it out into a separate function. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/connect.c158
1 files changed, 93 insertions, 65 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index eb85dd8d510e..74c222ed83dd 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1616,6 +1616,7 @@ cifs_put_smb_ses(struct cifsSesInfo *ses)
int xid;
struct TCP_Server_Info *server = ses->server;
+ cFYI(1, "%s: ses_count=%d\n", __func__, ses->ses_count);
write_lock(&cifs_tcp_ses_lock);
if (--ses->ses_count > 0) {
write_unlock(&cifs_tcp_ses_lock);
@@ -1634,6 +1635,92 @@ cifs_put_smb_ses(struct cifsSesInfo *ses)
cifs_put_tcp_session(server);
}
+static struct cifsSesInfo *
+cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
+{
+ int rc = -ENOMEM, xid;
+ struct cifsSesInfo *ses;
+
+ xid = GetXid();
+
+ ses = cifs_find_smb_ses(server, volume_info->username);
+ if (ses) {
+ cFYI(1, "Existing smb sess found (status=%d)", ses->status);
+
+ /* existing SMB ses has a server reference already */
+ cifs_put_tcp_session(server);
+
+ mutex_lock(&ses->session_mutex);
+ if (ses->need_reconnect) {
+ cFYI(1, "Session needs reconnect");
+ rc = cifs_setup_session(xid, ses,
+ volume_info->local_nls);
+ if (rc) {
+ mutex_unlock(&ses->session_mutex);
+ /* problem -- put our reference */
+ cifs_put_smb_ses(ses);
+ FreeXid(xid);
+ return ERR_PTR(rc);
+ }
+ }
+ mutex_unlock(&ses->session_mutex);
+ FreeXid(xid);
+ return ses;
+ }
+
+ cFYI(1, "Existing smb sess not found");
+ ses = sesInfoAlloc();
+ if (ses == NULL)
+ goto get_ses_fail;
+
+ /* new SMB session uses our server ref */
+ ses->server = server;
+ if (server->addr.sockAddr6.sin6_family == AF_INET6)
+ sprintf(ses->serverName, "%pI6",
+ &server->addr.sockAddr6.sin6_addr);
+ else
+ sprintf(ses->serverName, "%pI4",
+ &server->addr.sockAddr.sin_addr.s_addr);
+
+ if (volume_info->username)
+ strncpy(ses->userName, volume_info->username,
+ MAX_USERNAME_SIZE);
+
+ /* volume_info->password freed at unmount */
+ if (volume_info->password) {
+ ses->password = kstrdup(volume_info->password, GFP_KERNEL);
+ if (!ses->password)
+ goto get_ses_fail;
+ }
+ if (volume_info->domainname) {
+ int len = strlen(volume_info->domainname);
+ ses->domainName = kmalloc(len + 1, GFP_KERNEL);
+ if (ses->domainName)
+ strcpy(ses->domainName, volume_info->domainname);
+ }
+ ses->linux_uid = volume_info->linux_uid;
+ ses->overrideSecFlg = volume_info->secFlg;
+
+ mutex_lock(&ses->session_mutex);
+ rc = cifs_setup_session(xid, ses, volume_info->local_nls);
+ mutex_unlock(&ses->session_mutex);
+ if (rc)
+ goto get_ses_fail;
+
+ /* success, put it on the list */
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&ses->smb_ses_list, &server->smb_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ FreeXid(xid);
+ return ses;
+
+get_ses_fail:
+ sesInfoFree(ses);
+ FreeXid(xid);
+ return ERR_PTR(rc);
+}
+
static struct cifsTconInfo *
cifs_find_tcon(struct cifsSesInfo *ses, const char *unc)
{
@@ -2376,71 +2463,12 @@ try_mount_again:
goto out;
}
- pSesInfo = cifs_find_smb_ses(srvTcp, volume_info->username);
- if (pSesInfo) {
- cFYI(1, "Existing smb sess found (status=%d)",
- pSesInfo->status);
- /*
- * The existing SMB session already has a reference to srvTcp,
- * so we can put back the extra one we got before
- */
- cifs_put_tcp_session(srvTcp);
-
- mutex_lock(&pSesInfo->session_mutex);
- if (pSesInfo->need_reconnect) {
- cFYI(1, "Session needs reconnect");
- rc = cifs_setup_session(xid, pSesInfo,
- cifs_sb->local_nls);
- }
- mutex_unlock(&pSesInfo->session_mutex);
- } else if (!rc) {
- cFYI(1, "Existing smb sess not found");
- pSesInfo = sesInfoAlloc();
- if (pSesInfo == NULL) {
- rc = -ENOMEM;
- goto mount_fail_check;
- }
-
- /* new SMB session uses our srvTcp ref */
- pSesInfo->server = srvTcp;
- if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6)
- sprintf(pSesInfo->serverName, "%pI6",
- &srvTcp->addr.sockAddr6.sin6_addr);
- else
- sprintf(pSesInfo->serverName, "%pI4",
- &srvTcp->addr.sockAddr.sin_addr.s_addr);
-
- write_lock(&cifs_tcp_ses_lock);
- list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list);
- write_unlock(&cifs_tcp_ses_lock);
-
- /* volume_info->password freed at unmount */
- if (volume_info->password) {
- pSesInfo->password = kstrdup(volume_info->password,
- GFP_KERNEL);
- if (!pSesInfo->password) {
- rc = -ENOMEM;
- goto mount_fail_check;
- }
- }
- if (volume_info->username)
- strncpy(pSesInfo->userName, volume_info->username,
- MAX_USERNAME_SIZE);
- if (volume_info->domainname) {
- int len = strlen(volume_info->domainname);
- pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL);
- if (pSesInfo->domainName)
- strcpy(pSesInfo->domainName,
- volume_info->domainname);
- }
- pSesInfo->linux_uid = volume_info->linux_uid;
- pSesInfo->overrideSecFlg = volume_info->secFlg;
- mutex_lock(&pSesInfo->session_mutex);
-
- /* BB FIXME need to pass vol->secFlgs BB */
- rc = cifs_setup_session(xid, pSesInfo,
- cifs_sb->local_nls);
- mutex_unlock(&pSesInfo->session_mutex);
+ /* get a reference to a SMB session */
+ pSesInfo = cifs_get_smb_ses(srvTcp, volume_info);
+ if (IS_ERR(pSesInfo)) {
+ rc = PTR_ERR(pSesInfo);
+ pSesInfo = NULL;
+ goto mount_fail_check;
}
/* search for existing tcon to this server share */