From b3152e2c7aa9ad0c50085738d048fbf16d01d32d Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 24 Jun 2015 03:17:02 -0500 Subject: Add ioctl to set integrity set integrity increases reliability of files stored on SMB3 servers. Add ioctl to allow setting this on files on SMB3 and later mounts. Signed-off-by: Steve French --- fs/cifs/smb2ops.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'fs/cifs/smb2ops.c') diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index b1e9c0f1b24c..df91bcf56d67 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -861,6 +861,28 @@ smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, cfile->fid.volatile_fid); } +static int +smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon, + struct cifsFileInfo *cfile) +{ + struct fsctl_set_integrity_information_req integr_info; + char *retbuf = NULL; + unsigned int ret_data_len; + + integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED); + integr_info.Flags = 0; + integr_info.Reserved = 0; + + return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, + cfile->fid.volatile_fid, + FSCTL_SET_INTEGRITY_INFORMATION, + true /* is_fsctl */, (char *)&integr_info, + sizeof(struct fsctl_set_integrity_information_req), + (char **)&retbuf, + &ret_data_len); + +} + static int smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, const char *path, struct cifs_sb_info *cifs_sb, @@ -1671,6 +1693,7 @@ struct smb_version_operations smb30_operations = { .new_lease_key = smb2_new_lease_key, .generate_signingkey = generate_smb3signingkey, .calc_signature = smb3_calc_signature, + .set_integrity = smb3_set_integrity, .is_read_op = smb21_is_read_op, .set_oplock_level = smb3_set_oplock_level, .create_lease_buf = smb3_create_lease_buf, @@ -1756,6 +1779,7 @@ struct smb_version_operations smb311_operations = { .new_lease_key = smb2_new_lease_key, .generate_signingkey = generate_smb3signingkey, .calc_signature = smb3_calc_signature, + .set_integrity = smb3_set_integrity, .is_read_op = smb21_is_read_op, .set_oplock_level = smb3_set_oplock_level, .create_lease_buf = smb3_create_lease_buf, -- cgit v1.2.3