Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

[net-next-2.6.git] / fs / cifs / ioctl.c

diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 2fa22f20cfc500060991205e115995d2aa0253f3..0c98672d01225ccadb67bb09705e7c21922332c7 100644 (file)
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -38,10 +38,10 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
        struct cifs_sb_info *cifs_sb;
 #ifdef CONFIG_CIFS_POSIX
        struct cifsFileInfo *pSMBFile = filep->private_data;
-       struct cifsTconInfo *tcon = tlink_tcon(pSMBFile->tlink);
+       struct cifsTconInfo *tcon;
        __u64   ExtAttrBits = 0;
        __u64   ExtAttrMask = 0;
-       __u64   caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
+       __u64   caps;
 #endif /* CONFIG_CIFS_POSIX */
 
        xid = GetXid();
@@ -62,6 +62,10 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
                        break;
 #ifdef CONFIG_CIFS_POSIX
                case FS_IOC_GETFLAGS:
+                       if (pSMBFile == NULL)
+                               break;
+                       tcon = tlink_tcon(pSMBFile->tlink);
+                       caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
                        if (CIFS_UNIX_EXTATTR_CAP & caps) {
                                rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
                                        &ExtAttrBits, &ExtAttrMask);
@@ -73,6 +77,10 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
                        break;
 
                case FS_IOC_SETFLAGS:
+                       if (pSMBFile == NULL)
+                               break;
+                       tcon = tlink_tcon(pSMBFile->tlink);
+                       caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
                        if (CIFS_UNIX_EXTATTR_CAP & caps) {
                                if (get_user(ExtAttrBits, (int __user *)arg)) {
                                        rc = -EFAULT;