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Diffstat (limited to 'fs/cifs/smb2ops.c')
-rw-r--r--fs/cifs/smb2ops.c160
1 files changed, 147 insertions, 13 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index a44b4dbe4aae..0231108d9387 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -282,6 +282,7 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
+ false /* use_ipc */,
NULL /* no data input */, 0 /* no data input */,
(char **)&out_buf, &ret_data_len);
if (rc != 0)
@@ -571,6 +572,7 @@ SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
+ false /* use_ipc */,
NULL, 0 /* no input */,
(char **)&res_key, &ret_data_len);
@@ -635,7 +637,8 @@ smb2_clone_range(const unsigned int xid,
/* Request server copy to target from src identified by key */
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
- true /* is_fsctl */, (char *)pcchunk,
+ true /* is_fsctl */, false /* use_ipc */,
+ (char *)pcchunk,
sizeof(struct copychunk_ioctl), (char **)&retbuf,
&ret_data_len);
if (rc == 0) {
@@ -787,7 +790,8 @@ static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
- true /* is_fctl */, &setsparse, 1, NULL, NULL);
+ true /* is_fctl */, false /* use_ipc */,
+ &setsparse, 1, NULL, NULL);
if (rc) {
tcon->broken_sparse_sup = true;
cifs_dbg(FYI, "set sparse rc = %d\n", rc);
@@ -857,7 +861,8 @@ smb2_duplicate_extents(const unsigned int xid,
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
trgtfile->fid.volatile_fid,
FSCTL_DUPLICATE_EXTENTS_TO_FILE,
- true /* is_fsctl */, (char *)&dup_ext_buf,
+ true /* is_fsctl */, false /* use_ipc */,
+ (char *)&dup_ext_buf,
sizeof(struct duplicate_extents_to_file),
NULL,
&ret_data_len);
@@ -891,7 +896,8 @@ smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
FSCTL_SET_INTEGRITY_INFORMATION,
- true /* is_fsctl */, (char *)&integr_info,
+ true /* is_fsctl */, false /* use_ipc */,
+ (char *)&integr_info,
sizeof(struct fsctl_set_integrity_information_req),
NULL,
&ret_data_len);
@@ -910,7 +916,8 @@ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
FSCTL_SRV_ENUMERATE_SNAPSHOTS,
- true /* is_fsctl */, NULL, 0 /* no input data */,
+ true /* is_fsctl */, false /* use_ipc */,
+ NULL, 0 /* no input data */,
(char **)&retbuf,
&ret_data_len);
cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
@@ -1097,6 +1104,103 @@ smb2_new_lease_key(struct cifs_fid *fid)
generate_random_uuid(fid->lease_key);
}
+static int
+smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
+ const char *search_name,
+ struct dfs_info3_param **target_nodes,
+ unsigned int *num_of_nodes,
+ const struct nls_table *nls_codepage, int remap)
+{
+ int rc;
+ __le16 *utf16_path = NULL;
+ int utf16_path_len = 0;
+ struct cifs_tcon *tcon;
+ struct fsctl_get_dfs_referral_req *dfs_req = NULL;
+ struct get_dfs_referral_rsp *dfs_rsp = NULL;
+ u32 dfs_req_size = 0, dfs_rsp_size = 0;
+
+ cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
+
+ /*
+ * Use any tcon from the current session. Here, the first one.
+ */
+ spin_lock(&cifs_tcp_ses_lock);
+ tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon,
+ tcon_list);
+ if (tcon)
+ tcon->tc_count++;
+ spin_unlock(&cifs_tcp_ses_lock);
+
+ if (!tcon) {
+ cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
+ ses);
+ rc = -ENOTCONN;
+ goto out;
+ }
+
+ utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
+ &utf16_path_len,
+ nls_codepage, remap);
+ if (!utf16_path) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
+ dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
+ if (!dfs_req) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ /* Highest DFS referral version understood */
+ dfs_req->MaxReferralLevel = DFS_VERSION;
+
+ /* Path to resolve in an UTF-16 null-terminated string */
+ memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
+
+ do {
+ /* try first with IPC */
+ rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
+ FSCTL_DFS_GET_REFERRALS,
+ true /* is_fsctl */, true /* use_ipc */,
+ (char *)dfs_req, dfs_req_size,
+ (char **)&dfs_rsp, &dfs_rsp_size);
+ if (rc == -ENOTCONN) {
+ /* try with normal tcon */
+ rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
+ FSCTL_DFS_GET_REFERRALS,
+ true /* is_fsctl */, false /*use_ipc*/,
+ (char *)dfs_req, dfs_req_size,
+ (char **)&dfs_rsp, &dfs_rsp_size);
+ }
+ } while (rc == -EAGAIN);
+
+ if (rc) {
+ cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
+ goto out;
+ }
+
+ rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
+ num_of_nodes, target_nodes,
+ nls_codepage, remap, search_name,
+ true /* is_unicode */);
+ if (rc) {
+ cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
+ goto out;
+ }
+
+ out:
+ if (tcon) {
+ spin_lock(&cifs_tcp_ses_lock);
+ tcon->tc_count--;
+ spin_unlock(&cifs_tcp_ses_lock);
+ }
+ kfree(utf16_path);
+ kfree(dfs_req);
+ kfree(dfs_rsp);
+ return rc;
+}
#define SMB2_SYMLINK_STRUCT_SIZE \
(sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
@@ -1220,7 +1324,8 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
- true /* is_fctl */, (char *)&fsctl_buf,
+ true /* is_fctl */, false /* use_ipc */,
+ (char *)&fsctl_buf,
sizeof(struct file_zero_data_information), NULL, NULL);
free_xid(xid);
return rc;
@@ -1254,7 +1359,8 @@ static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
- true /* is_fctl */, (char *)&fsctl_buf,
+ true /* is_fctl */, false /* use_ipc */,
+ (char *)&fsctl_buf,
sizeof(struct file_zero_data_information), NULL, NULL);
free_xid(xid);
return rc;
@@ -1609,6 +1715,26 @@ static void cifs_crypt_complete(struct crypto_async_request *req, int err)
complete(&res->completion);
}
+static int
+smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
+{
+ struct cifs_ses *ses;
+ u8 *ses_enc_key;
+
+ spin_lock(&cifs_tcp_ses_lock);
+ list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
+ if (ses->Suid != ses_id)
+ continue;
+ ses_enc_key = enc ? ses->smb3encryptionkey :
+ ses->smb3decryptionkey;
+ memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
+ spin_unlock(&cifs_tcp_ses_lock);
+ return 0;
+ }
+ spin_unlock(&cifs_tcp_ses_lock);
+
+ return 1;
+}
/*
* Encrypt or decrypt @rqst message. @rqst has the following format:
* iov[0] - transform header (associate data),
@@ -1622,10 +1748,10 @@ crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
struct smb2_transform_hdr *tr_hdr =
(struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
- struct cifs_ses *ses;
int rc = 0;
struct scatterlist *sg;
u8 sign[SMB2_SIGNATURE_SIZE] = {};
+ u8 key[SMB3_SIGN_KEY_SIZE];
struct aead_request *req;
char *iv;
unsigned int iv_len;
@@ -1635,9 +1761,10 @@ crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
init_completion(&result.completion);
- ses = smb2_find_smb_ses(server, tr_hdr->SessionId);
- if (!ses) {
- cifs_dbg(VFS, "%s: Could not find session\n", __func__);
+ rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
+ if (rc) {
+ cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
+ enc ? "en" : "de");
return 0;
}
@@ -1649,8 +1776,7 @@ crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
tfm = enc ? server->secmech.ccmaesencrypt :
server->secmech.ccmaesdecrypt;
- rc = crypto_aead_setkey(tfm, enc ? ses->smb3encryptionkey :
- ses->smb3decryptionkey, SMB3_SIGN_KEY_SIZE);
+ rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
if (rc) {
cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
return rc;
@@ -2254,6 +2380,8 @@ struct smb_version_operations smb20_operations = {
.clone_range = smb2_clone_range,
.wp_retry_size = smb2_wp_retry_size,
.dir_needs_close = smb2_dir_needs_close,
+ .get_dfs_refer = smb2_get_dfs_refer,
+ .select_sectype = smb2_select_sectype,
};
struct smb_version_operations smb21_operations = {
@@ -2335,6 +2463,8 @@ struct smb_version_operations smb21_operations = {
.wp_retry_size = smb2_wp_retry_size,
.dir_needs_close = smb2_dir_needs_close,
.enum_snapshots = smb3_enum_snapshots,
+ .get_dfs_refer = smb2_get_dfs_refer,
+ .select_sectype = smb2_select_sectype,
};
struct smb_version_operations smb30_operations = {
@@ -2426,6 +2556,8 @@ struct smb_version_operations smb30_operations = {
.free_transform_rq = smb3_free_transform_rq,
.is_transform_hdr = smb3_is_transform_hdr,
.receive_transform = smb3_receive_transform,
+ .get_dfs_refer = smb2_get_dfs_refer,
+ .select_sectype = smb2_select_sectype,
};
#ifdef CONFIG_CIFS_SMB311
@@ -2518,6 +2650,8 @@ struct smb_version_operations smb311_operations = {
.free_transform_rq = smb3_free_transform_rq,
.is_transform_hdr = smb3_is_transform_hdr,
.receive_transform = smb3_receive_transform,
+ .get_dfs_refer = smb2_get_dfs_refer,
+ .select_sectype = smb2_select_sectype,
};
#endif /* CIFS_SMB311 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-13 08:56:49 +0000