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smb3: fix access denied on change notify request to some servers 

read permission, not just read attributes permission, is required
on the directory.

See MS-SMB2 (protocol specification) section 3.3.5.19.

Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org> # v5.6+
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
This commit is contained in:
Steve French 2020-07-07 18:08:46 -05:00
parent dcb7fd82c7
commit 4ef9b4f1a7
1 changed files with 1 additions and 1 deletions
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2
fs/cifs/smb2ops.c
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@ -2148,7 +2148,7 @@ smb3_notify(const unsigned int xid, struct file *pfile,
tcon = cifs_sb_master_tcon(cifs_sb);
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
oparms.disposition = FILE_OPEN;
oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;