cifs: add refcounted and timestamped container for holding tcons

[mv-sheeva.git] / fs / cifs / cifsacl.c

diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 32f244909a0de39ba0ad36b2509504655f0fbe97..2647ea410c4cf1cb15c41e1628aa213cc00ff220 100644 (file)
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -557,11 +557,16 @@ static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb,
 {
        struct cifs_ntsd *pntsd = NULL;
        int xid, rc;
+       struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+
+       if (IS_ERR(tlink))
+               return NULL;
 
        xid = GetXid();
-       rc = CIFSSMBGetCIFSACL(xid, cifs_sb_tcon(cifs_sb), fid, &pntsd, pacllen);
+       rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), fid, &pntsd, pacllen);
        FreeXid(xid);
 
+       cifs_put_tlink(tlink);
 
        cFYI(1, "GetCIFSACL rc = %d ACL len %d", rc, *pacllen);
        return pntsd;
@@ -574,10 +579,16 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
        int oplock = 0;
        int xid, rc;
        __u16 fid;
+       struct cifsTconInfo *tcon;
+       struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+
+       if (IS_ERR(tlink))
+               return NULL;
 
+       tcon = tlink_tcon(tlink);
        xid = GetXid();
 
-       rc = CIFSSMBOpen(xid, cifs_sb_tcon(cifs_sb), path, FILE_OPEN, READ_CONTROL, 0,
+       rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, READ_CONTROL, 0,
                         &fid, &oplock, NULL, cifs_sb->local_nls,
                         cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
        if (rc) {
@@ -585,11 +596,12 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
                goto out;
        }
 
-       rc = CIFSSMBGetCIFSACL(xid, cifs_sb_tcon(cifs_sb), fid, &pntsd, pacllen);
+       rc = CIFSSMBGetCIFSACL(xid, tcon, fid, &pntsd, pacllen);
        cFYI(1, "GetCIFSACL rc = %d ACL len %d", rc, *pacllen);
 
-       CIFSSMBClose(xid, cifs_sb_tcon(cifs_sb), fid);
+       CIFSSMBClose(xid, tcon, fid);
  out:
+       cifs_put_tlink(tlink);
        FreeXid(xid);
        return pntsd;
 }
@@ -616,10 +628,15 @@ static int set_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, __u16 fid,
                struct cifs_ntsd *pnntsd, u32 acllen)
 {
        int xid, rc;
+       struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+
+       if (IS_ERR(tlink))
+               return PTR_ERR(tlink);
 
        xid = GetXid();
-       rc = CIFSSMBSetCIFSACL(xid, cifs_sb_tcon(cifs_sb), fid, pnntsd, acllen);
+       rc = CIFSSMBSetCIFSACL(xid, tlink_tcon(tlink), fid, pnntsd, acllen);
        FreeXid(xid);
+       cifs_put_tlink(tlink);
 
        cFYI(DBG2, "SetCIFSACL rc = %d", rc);
        return rc;
@@ -631,10 +648,16 @@ static int set_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, const char *path,
        int oplock = 0;
        int xid, rc;
        __u16 fid;
+       struct cifsTconInfo *tcon;
+       struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
 
+       if (IS_ERR(tlink))
+               return PTR_ERR(tlink);
+
+       tcon = tlink_tcon(tlink);
        xid = GetXid();
 
-       rc = CIFSSMBOpen(xid, cifs_sb_tcon(cifs_sb), path, FILE_OPEN, WRITE_DAC, 0,
+       rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, WRITE_DAC, 0,
                         &fid, &oplock, NULL, cifs_sb->local_nls,
                         cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
        if (rc) {
@@ -642,12 +665,13 @@ static int set_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, const char *path,
                goto out;
        }
 
-       rc = CIFSSMBSetCIFSACL(xid, cifs_sb_tcon(cifs_sb), fid, pnntsd, acllen);
+       rc = CIFSSMBSetCIFSACL(xid, tcon, fid, pnntsd, acllen);
        cFYI(DBG2, "SetCIFSACL rc = %d", rc);
 
-       CIFSSMBClose(xid, cifs_sb_tcon(cifs_sb), fid);
- out:
+       CIFSSMBClose(xid, tcon, fid);
+out:
        FreeXid(xid);
+       cifs_put_tlink(tlink);
        return rc;
 }