cifs: add function to get a tcon from cifs_sb
When we convert cifs to do multiple sessions per mount, we'll need more
than one tcon per superblock. At that point "cifs_sb->tcon" will make
no sense. Add a new accessor function that gets a tcon given a cifs_sb.
For now, it just returns cifs_sb->tcon. Later it'll do more.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 0fa1455..dce2d59 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -52,7 +52,7 @@
/* check if server can support readpages */
- if (cifs_sb->tcon->ses->server->maxBuf <
+ if (cifs_sb_tcon(cifs_sb)->ses->server->maxBuf <
PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
else
@@ -315,7 +315,8 @@
struct cifsTconInfo *tcon;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
- tcon = cifs_sb->tcon;
+ tcon = cifs_sb_tcon(cifs_sb);
+
cFYI(1, "Getting info on %s", full_path);
/* could have done a find first instead but this returns more info */
@@ -360,7 +361,7 @@
int rc;
int oplock = 0;
__u16 netfid;
- struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct cifsTconInfo *pTcon = cifs_sb_tcon(cifs_sb);
char buf[24];
unsigned int bytes_read;
char *pbuf;
@@ -449,7 +450,7 @@
char ea_value[4];
__u32 mode;
- rc = CIFSSMBQAllEAs(xid, cifs_sb->tcon, path, "SETFILEBITS",
+ rc = CIFSSMBQAllEAs(xid, cifs_sb_tcon(cifs_sb), path, "SETFILEBITS",
ea_value, 4 /* size of buf */, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -489,8 +490,8 @@
fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
if (adjust_tz) {
- fattr->cf_ctime.tv_sec += cifs_sb->tcon->ses->server->timeAdj;
- fattr->cf_mtime.tv_sec += cifs_sb->tcon->ses->server->timeAdj;
+ fattr->cf_ctime.tv_sec += cifs_sb_tcon(cifs_sb)->ses->server->timeAdj;
+ fattr->cf_mtime.tv_sec += cifs_sb_tcon(cifs_sb)->ses->server->timeAdj;
}
fattr->cf_eof = le64_to_cpu(info->EndOfFile);
@@ -566,7 +567,7 @@
bool adjustTZ = false;
struct cifs_fattr fattr;
- pTcon = cifs_sb->tcon;
+ pTcon = cifs_sb_tcon(cifs_sb);
cFYI(1, "Getting info on %s", full_path);
if ((pfindData == NULL) && (*pinode != NULL)) {
@@ -706,8 +707,8 @@
return full_path;
}
- if (cifs_sb->tcon && (cifs_sb->tcon->Flags & SMB_SHARE_IS_IN_DFS))
- dfsplen = strnlen(cifs_sb->tcon->treeName, MAX_TREE_SIZE + 1);
+ if (cifs_sb_tcon(cifs_sb) && (cifs_sb_tcon(cifs_sb)->Flags & SMB_SHARE_IS_IN_DFS))
+ dfsplen = strnlen(cifs_sb_tcon(cifs_sb)->treeName, MAX_TREE_SIZE + 1);
else
dfsplen = 0;
@@ -716,7 +717,7 @@
return full_path;
if (dfsplen) {
- strncpy(full_path, cifs_sb->tcon->treeName, dfsplen);
+ strncpy(full_path, cifs_sb_tcon(cifs_sb)->treeName, dfsplen);
/* switch slash direction in prepath depending on whether
* windows or posix style path names
*/
@@ -841,7 +842,7 @@
return ERR_PTR(-ENOMEM);
xid = GetXid();
- if (cifs_sb->tcon->unix_ext)
+ if (cifs_sb_tcon(cifs_sb)->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
else
rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
@@ -852,10 +853,10 @@
#ifdef CONFIG_CIFS_FSCACHE
/* populate tcon->resource_id */
- cifs_sb->tcon->resource_id = CIFS_I(inode)->uniqueid;
+ cifs_sb_tcon(cifs_sb)->resource_id = CIFS_I(inode)->uniqueid;
#endif
- if (rc && cifs_sb->tcon->ipc) {
+ if (rc && cifs_sb_tcon(cifs_sb)->ipc) {
cFYI(1, "ipc connection - fake read inode");
inode->i_mode |= S_IFDIR;
inode->i_nlink = 2;
@@ -938,7 +939,7 @@
goto set_via_filehandle;
}
- pTcon = cifs_sb->tcon;
+ pTcon = cifs_sb_tcon(cifs_sb);
/*
* NT4 apparently returns success on this call, but it doesn't
@@ -1000,7 +1001,7 @@
struct inode *inode = dentry->d_inode;
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *tcon = cifs_sb->tcon;
+ struct cifsTconInfo *tcon = cifs_sb_tcon(cifs_sb);
__u32 dosattr, origattr;
FILE_BASIC_INFO *info_buf = NULL;
@@ -1111,7 +1112,7 @@
struct cifsInodeInfo *cifs_inode;
struct super_block *sb = dir->i_sb;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
- struct cifsTconInfo *tcon = cifs_sb->tcon;
+ struct cifsTconInfo *tcon = cifs_sb_tcon(cifs_sb);
struct iattr *attrs = NULL;
__u32 dosattr = 0, origattr = 0;
@@ -1213,7 +1214,7 @@
xid = GetXid();
cifs_sb = CIFS_SB(inode->i_sb);
- pTcon = cifs_sb->tcon;
+ pTcon = cifs_sb_tcon(cifs_sb);
full_path = build_path_from_dentry(direntry);
if (full_path == NULL) {
@@ -1394,7 +1395,7 @@
xid = GetXid();
cifs_sb = CIFS_SB(inode->i_sb);
- pTcon = cifs_sb->tcon;
+ pTcon = cifs_sb_tcon(cifs_sb);
full_path = build_path_from_dentry(direntry);
if (full_path == NULL) {
@@ -1435,7 +1436,7 @@
struct dentry *to_dentry, const char *toPath)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
- struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct cifsTconInfo *pTcon = cifs_sb_tcon(cifs_sb);
__u16 srcfid;
int oplock, rc;
@@ -1486,7 +1487,7 @@
int xid, rc, tmprc;
cifs_sb = CIFS_SB(source_dir->i_sb);
- tcon = cifs_sb->tcon;
+ tcon = cifs_sb_tcon(cifs_sb);
xid = GetXid();
@@ -1660,7 +1661,7 @@
"jiffies %ld", full_path, inode, inode->i_count.counter,
dentry, dentry->d_time, jiffies);
- if (CIFS_SB(sb)->tcon->unix_ext)
+ if (cifs_sb_tcon(CIFS_SB(sb))->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
else
rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
@@ -1755,7 +1756,7 @@
if (rc != 0) {
if (pTcon == NULL)
- pTcon = cifs_sb->tcon;
+ pTcon = cifs_sb_tcon(cifs_sb);
/* Set file size by pathname rather than by handle
either because no valid, writeable file handle for
@@ -1901,7 +1902,7 @@
rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
cifsFileInfo_put(open_file);
} else {
- pTcon = cifs_sb->tcon;
+ pTcon = cifs_sb_tcon(cifs_sb);
rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
@@ -2086,7 +2087,7 @@
{
struct inode *inode = direntry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct cifsTconInfo *pTcon = cifs_sb_tcon(cifs_sb);
if (pTcon->unix_ext)
return cifs_setattr_unix(direntry, attrs);