smb3 file name too long fix

-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQGcBAABAgAGBQJZ+SpeAAoJEIosvXAHck9R3wwL/RoTCiE9T6LNRovIhOAJU8Z9
 gd0j5ysO0ZdeKul66zDQLHJ2KdNQ2cxhXJH6y8+YdpgZ9hKxsl/6FNAncvwsjnWG
 76KM+QxsG1yxIRNynO130SYD8huS2dLFF4HmIYYj9JxaIDLtHf/7hEPvjjmmvbX2
 70+7O2moo8ljR3ER5qLZ6wqL17gXdIDk5D3k52BTJ0OPMANqztNL23dWu7Cpvflg
 O7QPEXX97NZmYYSnQ4AJFTY08A2Ya8FPEDnRYTuJlBeM02KrKRxrMyFNwXESQuVs
 lERNcxyRIkRJL5rINdep8X7Xzp9LR5XlJuUMB1s4IORC/LagNFO4weJyfcvV3cez
 lbdqYjug07ag321zyTex5ho4q4mr8sPzmYfBm4pv717DLLS5VPA/nFHb00ajWqF6
 HLZMOP+bLhgPiH8OMs22+y1nI+DcKu1BVA0gV/ZSrn69xJsAr32ut893B7/VSiMO
 CIwhFJTTVQvFSdSaNn6AIk95m8T80NwuYv/UGHq2AA==
 =WOnZ
 -----END PGP SIGNATURE-----

Merge tag 'smb3-file-name-too-long-fix' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fix from Steve French:
 "smb3 file name too long fix"

* tag 'smb3-file-name-too-long-fix' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: check MaxPathNameComponentLength != 0 before using it
This commit is contained in:
Linus Torvalds 2017-11-01 07:59:39 -07:00
commit 89db69d670

View File

@ -204,7 +204,8 @@ check_name(struct dentry *direntry, struct cifs_tcon *tcon)
struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
int i;
if (unlikely(direntry->d_name.len >
if (unlikely(tcon->fsAttrInfo.MaxPathNameComponentLength &&
direntry->d_name.len >
le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength)))
return -ENAMETOOLONG;
@ -520,7 +521,7 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
rc = check_name(direntry, tcon);
if (rc)
goto out_free_xid;
goto out;
server = tcon->ses->server;