Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
Pull CIFS fixes from Steve French: "A set of cifs fixes most important of which is Pavel's fix for some problems with handling Windows reparse points and also the security fix for setfacl over a cifs mount to Samba removing part of the ACL. Both of these fixes are for stable as well. Also added most of copychunk (copy offload) support to cifs although I expect a final patch in that series (to fix handling of larger files) in a few days (had to hold off on that in order to incorporate some additional code review feedback). Also added support for O_DIRECT on forcedirectio mounts (needed in order to run some of the server benchmarks over cifs and smb2/smb3 mounts)" * 'for-linus' of git://git.samba.org/sfrench/cifs-2.6: [CIFS] Warn if SMB3 encryption required by server setfacl removes part of ACL when setting POSIX ACLs to Samba [CIFS] Set copychunk defaults CIFS: SMB2/SMB3 Copy offload support (refcopy) phase 1 cifs: Use data structures to compute NTLMv2 response offsets [CIFS] O_DIRECT opens should work on directio mounts cifs: don't spam the logs on unexpected lookup errors cifs: change ERRnomem error mapping from ENOMEM to EREMOTEIO CIFS: Fix symbolic links usage
This commit is contained in:
commit
1213959d4a
@ -548,7 +548,13 @@ static int
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CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
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{
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int rc;
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unsigned int offset = CIFS_SESS_KEY_SIZE + 8;
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struct ntlmv2_resp *ntlmv2 = (struct ntlmv2_resp *)
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(ses->auth_key.response + CIFS_SESS_KEY_SIZE);
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unsigned int hash_len;
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/* The MD5 hash starts at challenge_key.key */
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hash_len = ses->auth_key.len - (CIFS_SESS_KEY_SIZE +
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offsetof(struct ntlmv2_resp, challenge.key[0]));
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if (!ses->server->secmech.sdeschmacmd5) {
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cifs_dbg(VFS, "%s: can't generate ntlmv2 hash\n", __func__);
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@ -556,7 +562,7 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
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}
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rc = crypto_shash_setkey(ses->server->secmech.hmacmd5,
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ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
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ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
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if (rc) {
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cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n",
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__func__);
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@ -570,20 +576,21 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
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}
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if (ses->server->negflavor == CIFS_NEGFLAVOR_EXTENDED)
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memcpy(ses->auth_key.response + offset,
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ses->ntlmssp->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
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memcpy(ntlmv2->challenge.key,
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ses->ntlmssp->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
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else
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memcpy(ses->auth_key.response + offset,
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ses->server->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
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memcpy(ntlmv2->challenge.key,
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ses->server->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
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rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
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ses->auth_key.response + offset, ses->auth_key.len - offset);
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ntlmv2->challenge.key, hash_len);
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if (rc) {
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cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
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return rc;
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}
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/* Note that the MD5 digest over writes anon.challenge_key.key */
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rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
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ses->auth_key.response + CIFS_SESS_KEY_SIZE);
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ntlmv2->ntlmv2_hash);
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if (rc)
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cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
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@ -627,7 +634,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
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int rc;
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int baselen;
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unsigned int tilen;
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struct ntlmv2_resp *buf;
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struct ntlmv2_resp *ntlmv2;
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char ntlmv2_hash[16];
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unsigned char *tiblob = NULL; /* target info blob */
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@ -660,13 +667,14 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
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}
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ses->auth_key.len += baselen;
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buf = (struct ntlmv2_resp *)
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ntlmv2 = (struct ntlmv2_resp *)
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(ses->auth_key.response + CIFS_SESS_KEY_SIZE);
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buf->blob_signature = cpu_to_le32(0x00000101);
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buf->reserved = 0;
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buf->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
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get_random_bytes(&buf->client_chal, sizeof(buf->client_chal));
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buf->reserved2 = 0;
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ntlmv2->blob_signature = cpu_to_le32(0x00000101);
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ntlmv2->reserved = 0;
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/* Must be within 5 minutes of the server */
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ntlmv2->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
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get_random_bytes(&ntlmv2->client_chal, sizeof(ntlmv2->client_chal));
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ntlmv2->reserved2 = 0;
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memcpy(ses->auth_key.response + baselen, tiblob, tilen);
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@ -706,7 +714,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
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}
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rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
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ses->auth_key.response + CIFS_SESS_KEY_SIZE,
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ntlmv2->ntlmv2_hash,
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CIFS_HMAC_MD5_HASH_SIZE);
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if (rc) {
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cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
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@ -261,7 +261,7 @@ struct smb_version_operations {
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/* query path data from the server */
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int (*query_path_info)(const unsigned int, struct cifs_tcon *,
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struct cifs_sb_info *, const char *,
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FILE_ALL_INFO *, bool *);
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FILE_ALL_INFO *, bool *, bool *);
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/* query file data from the server */
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int (*query_file_info)(const unsigned int, struct cifs_tcon *,
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struct cifs_fid *, FILE_ALL_INFO *);
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@ -381,6 +381,9 @@ struct smb_version_operations {
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char * (*create_lease_buf)(u8 *, u8);
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/* parse lease context buffer and return oplock/epoch info */
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__u8 (*parse_lease_buf)(void *, unsigned int *);
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int (*clone_range)(const unsigned int, struct cifsFileInfo *src_file,
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struct cifsFileInfo *target_file, u64 src_off, u64 len,
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u64 dest_off);
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};
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struct smb_version_values {
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@ -855,6 +858,9 @@ struct cifs_tcon {
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__le64 vol_create_time;
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__u32 ss_flags; /* sector size flags */
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__u32 perf_sector_size; /* best sector size for perf */
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__u32 max_chunks;
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__u32 max_bytes_chunk;
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__u32 max_bytes_copy;
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#endif /* CONFIG_CIFS_SMB2 */
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#ifdef CONFIG_CIFS_FSCACHE
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u64 resource_id; /* server resource id */
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@ -697,7 +697,13 @@ struct ntlmssp2_name {
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} __attribute__((packed));
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struct ntlmv2_resp {
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char ntlmv2_hash[CIFS_ENCPWD_SIZE];
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union {
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char ntlmv2_hash[CIFS_ENCPWD_SIZE];
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struct {
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__u8 reserved[8];
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__u8 key[CIFS_SERVER_CHALLENGE_SIZE];
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} __attribute__((packed)) challenge;
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} __attribute__((packed));
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__le32 blob_signature;
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__u32 reserved;
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__le64 time;
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|
@ -3369,11 +3369,13 @@ static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL,
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return 0;
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}
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cifs_acl->version = cpu_to_le16(1);
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if (acl_type == ACL_TYPE_ACCESS)
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if (acl_type == ACL_TYPE_ACCESS) {
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cifs_acl->access_entry_count = cpu_to_le16(count);
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else if (acl_type == ACL_TYPE_DEFAULT)
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cifs_acl->default_entry_count = __constant_cpu_to_le16(0xFFFF);
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} else if (acl_type == ACL_TYPE_DEFAULT) {
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cifs_acl->default_entry_count = cpu_to_le16(count);
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else {
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cifs_acl->access_entry_count = __constant_cpu_to_le16(0xFFFF);
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} else {
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cifs_dbg(FYI, "unknown ACL type %d\n", acl_type);
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return 0;
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}
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|
@ -756,7 +756,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
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/* if it was once a directory (but how can we tell?) we could do
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shrink_dcache_parent(direntry); */
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} else if (rc != -EACCES) {
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cifs_dbg(VFS, "Unexpected lookup error %d\n", rc);
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cifs_dbg(FYI, "Unexpected lookup error %d\n", rc);
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/* We special case check for Access Denied - since that
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is a common return code */
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}
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@ -3663,6 +3663,27 @@ void cifs_oplock_break(struct work_struct *work)
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}
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}
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/*
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* The presence of cifs_direct_io() in the address space ops vector
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* allowes open() O_DIRECT flags which would have failed otherwise.
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*
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* In the non-cached mode (mount with cache=none), we shunt off direct read and write requests
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* so this method should never be called.
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*
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* Direct IO is not yet supported in the cached mode.
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*/
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static ssize_t
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cifs_direct_io(int rw, struct kiocb *iocb, const struct iovec *iov,
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loff_t pos, unsigned long nr_segs)
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{
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/*
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* FIXME
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* Eventually need to support direct IO for non forcedirectio mounts
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*/
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return -EINVAL;
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}
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const struct address_space_operations cifs_addr_ops = {
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.readpage = cifs_readpage,
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.readpages = cifs_readpages,
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@ -3672,6 +3693,7 @@ const struct address_space_operations cifs_addr_ops = {
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.write_end = cifs_write_end,
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.set_page_dirty = __set_page_dirty_nobuffers,
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.releasepage = cifs_release_page,
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.direct_IO = cifs_direct_io,
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.invalidatepage = cifs_invalidate_page,
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.launder_page = cifs_launder_page,
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};
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|
@ -542,7 +542,8 @@ static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
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/* Fill a cifs_fattr struct with info from FILE_ALL_INFO */
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static void
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cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
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struct cifs_sb_info *cifs_sb, bool adjust_tz)
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struct cifs_sb_info *cifs_sb, bool adjust_tz,
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bool symlink)
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{
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struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
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|
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@ -569,7 +570,11 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
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fattr->cf_createtime = le64_to_cpu(info->CreationTime);
|
||||
|
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fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
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if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
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|
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if (symlink) {
|
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fattr->cf_mode = S_IFLNK;
|
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fattr->cf_dtype = DT_LNK;
|
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} else if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
|
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fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
|
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fattr->cf_dtype = DT_DIR;
|
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/*
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@ -578,10 +583,6 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
|
||||
*/
|
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if (!tcon->unix_ext)
|
||||
fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
|
||||
} else if (fattr->cf_cifsattrs & ATTR_REPARSE) {
|
||||
fattr->cf_mode = S_IFLNK;
|
||||
fattr->cf_dtype = DT_LNK;
|
||||
fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
|
||||
} else {
|
||||
fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
|
||||
fattr->cf_dtype = DT_REG;
|
||||
@ -626,7 +627,8 @@ cifs_get_file_info(struct file *filp)
|
||||
rc = server->ops->query_file_info(xid, tcon, &cfile->fid, &find_data);
|
||||
switch (rc) {
|
||||
case 0:
|
||||
cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false);
|
||||
cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false,
|
||||
false);
|
||||
break;
|
||||
case -EREMOTE:
|
||||
cifs_create_dfs_fattr(&fattr, inode->i_sb);
|
||||
@ -673,6 +675,7 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
|
||||
bool adjust_tz = false;
|
||||
struct cifs_fattr fattr;
|
||||
struct cifs_search_info *srchinf = NULL;
|
||||
bool symlink = false;
|
||||
|
||||
tlink = cifs_sb_tlink(cifs_sb);
|
||||
if (IS_ERR(tlink))
|
||||
@ -702,12 +705,12 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
|
||||
}
|
||||
data = (FILE_ALL_INFO *)buf;
|
||||
rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path,
|
||||
data, &adjust_tz);
|
||||
data, &adjust_tz, &symlink);
|
||||
}
|
||||
|
||||
if (!rc) {
|
||||
cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *)data, cifs_sb,
|
||||
adjust_tz);
|
||||
cifs_all_info_to_fattr(&fattr, data, cifs_sb, adjust_tz,
|
||||
symlink);
|
||||
} else if (rc == -EREMOTE) {
|
||||
cifs_create_dfs_fattr(&fattr, sb);
|
||||
rc = 0;
|
||||
|
111
fs/cifs/ioctl.c
111
fs/cifs/ioctl.c
@ -22,12 +22,120 @@
|
||||
*/
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/file.h>
|
||||
#include <linux/mount.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/pagemap.h>
|
||||
#include <linux/btrfs.h>
|
||||
#include "cifspdu.h"
|
||||
#include "cifsglob.h"
|
||||
#include "cifsproto.h"
|
||||
#include "cifs_debug.h"
|
||||
#include "cifsfs.h"
|
||||
|
||||
static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
|
||||
unsigned long srcfd, u64 off, u64 len, u64 destoff)
|
||||
{
|
||||
int rc;
|
||||
struct cifsFileInfo *smb_file_target = dst_file->private_data;
|
||||
struct inode *target_inode = file_inode(dst_file);
|
||||
struct cifs_tcon *target_tcon;
|
||||
struct fd src_file;
|
||||
struct cifsFileInfo *smb_file_src;
|
||||
struct inode *src_inode;
|
||||
struct cifs_tcon *src_tcon;
|
||||
|
||||
cifs_dbg(FYI, "ioctl clone range\n");
|
||||
/* the destination must be opened for writing */
|
||||
if (!(dst_file->f_mode & FMODE_WRITE)) {
|
||||
cifs_dbg(FYI, "file target not open for write\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* check if target volume is readonly and take reference */
|
||||
rc = mnt_want_write_file(dst_file);
|
||||
if (rc) {
|
||||
cifs_dbg(FYI, "mnt_want_write failed with rc %d\n", rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
src_file = fdget(srcfd);
|
||||
if (!src_file.file) {
|
||||
rc = -EBADF;
|
||||
goto out_drop_write;
|
||||
}
|
||||
|
||||
if ((!src_file.file->private_data) || (!dst_file->private_data)) {
|
||||
rc = -EBADF;
|
||||
cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
|
||||
goto out_fput;
|
||||
}
|
||||
|
||||
rc = -EXDEV;
|
||||
smb_file_target = dst_file->private_data;
|
||||
smb_file_src = src_file.file->private_data;
|
||||
src_tcon = tlink_tcon(smb_file_src->tlink);
|
||||
target_tcon = tlink_tcon(smb_file_target->tlink);
|
||||
|
||||
/* check if source and target are on same tree connection */
|
||||
if (src_tcon != target_tcon) {
|
||||
cifs_dbg(VFS, "file copy src and target on different volume\n");
|
||||
goto out_fput;
|
||||
}
|
||||
|
||||
src_inode = src_file.file->f_dentry->d_inode;
|
||||
|
||||
/*
|
||||
* Note: cifs case is easier than btrfs since server responsible for
|
||||
* checks for proper open modes and file type and if it wants
|
||||
* server could even support copy of range where source = target
|
||||
*/
|
||||
|
||||
/* so we do not deadlock racing two ioctls on same files */
|
||||
if (target_inode < src_inode) {
|
||||
mutex_lock_nested(&target_inode->i_mutex, I_MUTEX_PARENT);
|
||||
mutex_lock_nested(&src_inode->i_mutex, I_MUTEX_CHILD);
|
||||
} else {
|
||||
mutex_lock_nested(&src_inode->i_mutex, I_MUTEX_PARENT);
|
||||
mutex_lock_nested(&target_inode->i_mutex, I_MUTEX_CHILD);
|
||||
}
|
||||
|
||||
/* determine range to clone */
|
||||
rc = -EINVAL;
|
||||
if (off + len > src_inode->i_size || off + len < off)
|
||||
goto out_unlock;
|
||||
if (len == 0)
|
||||
len = src_inode->i_size - off;
|
||||
|
||||
cifs_dbg(FYI, "about to flush pages\n");
|
||||
/* should we flush first and last page first */
|
||||
truncate_inode_pages_range(&target_inode->i_data, destoff,
|
||||
PAGE_CACHE_ALIGN(destoff + len)-1);
|
||||
|
||||
if (target_tcon->ses->server->ops->clone_range)
|
||||
rc = target_tcon->ses->server->ops->clone_range(xid,
|
||||
smb_file_src, smb_file_target, off, len, destoff);
|
||||
|
||||
/* force revalidate of size and timestamps of target file now
|
||||
that target is updated on the server */
|
||||
CIFS_I(target_inode)->time = 0;
|
||||
out_unlock:
|
||||
/* although unlocking in the reverse order from locking is not
|
||||
strictly necessary here it is a little cleaner to be consistent */
|
||||
if (target_inode < src_inode) {
|
||||
mutex_unlock(&src_inode->i_mutex);
|
||||
mutex_unlock(&target_inode->i_mutex);
|
||||
} else {
|
||||
mutex_unlock(&target_inode->i_mutex);
|
||||
mutex_unlock(&src_inode->i_mutex);
|
||||
}
|
||||
out_fput:
|
||||
fdput(src_file);
|
||||
out_drop_write:
|
||||
mnt_drop_write_file(dst_file);
|
||||
return rc;
|
||||
}
|
||||
|
||||
long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
|
||||
{
|
||||
struct inode *inode = file_inode(filep);
|
||||
@ -105,6 +213,9 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
|
||||
cifs_dbg(FYI, "set compress flag rc %d\n", rc);
|
||||
}
|
||||
break;
|
||||
case BTRFS_IOC_CLONE:
|
||||
rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0);
|
||||
break;
|
||||
default:
|
||||
cifs_dbg(FYI, "unsupported ioctl\n");
|
||||
break;
|
||||
|
@ -51,7 +51,7 @@ static const struct smb_to_posix_error mapping_table_ERRDOS[] = {
|
||||
{ERRnoaccess, -EACCES},
|
||||
{ERRbadfid, -EBADF},
|
||||
{ERRbadmcb, -EIO},
|
||||
{ERRnomem, -ENOMEM},
|
||||
{ERRnomem, -EREMOTEIO},
|
||||
{ERRbadmem, -EFAULT},
|
||||
{ERRbadenv, -EFAULT},
|
||||
{ERRbadformat, -EINVAL},
|
||||
|
@ -134,22 +134,6 @@ cifs_prime_dcache(struct dentry *parent, struct qstr *name,
|
||||
dput(dentry);
|
||||
}
|
||||
|
||||
/*
|
||||
* Is it possible that this directory might turn out to be a DFS referral
|
||||
* once we go to try and use it?
|
||||
*/
|
||||
static bool
|
||||
cifs_dfs_is_possible(struct cifs_sb_info *cifs_sb)
|
||||
{
|
||||
#ifdef CONFIG_CIFS_DFS_UPCALL
|
||||
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
|
||||
|
||||
if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
|
||||
return true;
|
||||
#endif
|
||||
return false;
|
||||
}
|
||||
|
||||
static void
|
||||
cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
|
||||
{
|
||||
@ -159,27 +143,19 @@ cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
|
||||
if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
|
||||
fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
|
||||
fattr->cf_dtype = DT_DIR;
|
||||
/*
|
||||
* Windows CIFS servers generally make DFS referrals look
|
||||
* like directories in FIND_* responses with the reparse
|
||||
* attribute flag also set (since DFS junctions are
|
||||
* reparse points). We must revalidate at least these
|
||||
* directory inodes before trying to use them (if
|
||||
* they are DFS we will get PATH_NOT_COVERED back
|
||||
* when queried directly and can then try to connect
|
||||
* to the DFS target)
|
||||
*/
|
||||
if (cifs_dfs_is_possible(cifs_sb) &&
|
||||
(fattr->cf_cifsattrs & ATTR_REPARSE))
|
||||
fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
|
||||
} else if (fattr->cf_cifsattrs & ATTR_REPARSE) {
|
||||
fattr->cf_mode = S_IFLNK;
|
||||
fattr->cf_dtype = DT_LNK;
|
||||
} else {
|
||||
fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
|
||||
fattr->cf_dtype = DT_REG;
|
||||
}
|
||||
|
||||
/*
|
||||
* We need to revalidate it further to make a decision about whether it
|
||||
* is a symbolic link, DFS referral or a reparse point with a direct
|
||||
* access like junctions, deduplicated files, NFS symlinks.
|
||||
*/
|
||||
if (fattr->cf_cifsattrs & ATTR_REPARSE)
|
||||
fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
|
||||
|
||||
/* non-unix readdir doesn't provide nlink */
|
||||
fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
|
||||
|
||||
|
@ -534,10 +534,12 @@ cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
static int
|
||||
cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
struct cifs_sb_info *cifs_sb, const char *full_path,
|
||||
FILE_ALL_INFO *data, bool *adjustTZ)
|
||||
FILE_ALL_INFO *data, bool *adjustTZ, bool *symlink)
|
||||
{
|
||||
int rc;
|
||||
|
||||
*symlink = false;
|
||||
|
||||
/* could do find first instead but this returns more info */
|
||||
rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
|
||||
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
|
||||
@ -554,6 +556,23 @@ cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
CIFS_MOUNT_MAP_SPECIAL_CHR);
|
||||
*adjustTZ = true;
|
||||
}
|
||||
|
||||
if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
|
||||
int tmprc;
|
||||
int oplock = 0;
|
||||
__u16 netfid;
|
||||
|
||||
/* Need to check if this is a symbolic link or not */
|
||||
tmprc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
|
||||
FILE_READ_ATTRIBUTES, 0, &netfid, &oplock,
|
||||
NULL, cifs_sb->local_nls,
|
||||
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
|
||||
if (tmprc == -EOPNOTSUPP)
|
||||
*symlink = true;
|
||||
else
|
||||
CIFSSMBClose(xid, tcon, netfid);
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
@ -123,12 +123,13 @@ move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
|
||||
int
|
||||
smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
struct cifs_sb_info *cifs_sb, const char *full_path,
|
||||
FILE_ALL_INFO *data, bool *adjust_tz)
|
||||
FILE_ALL_INFO *data, bool *adjust_tz, bool *symlink)
|
||||
{
|
||||
int rc;
|
||||
struct smb2_file_all_info *smb2_data;
|
||||
|
||||
*adjust_tz = false;
|
||||
*symlink = false;
|
||||
|
||||
smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
|
||||
GFP_KERNEL);
|
||||
@ -136,9 +137,16 @@ smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
return -ENOMEM;
|
||||
|
||||
rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path,
|
||||
FILE_READ_ATTRIBUTES, FILE_OPEN,
|
||||
OPEN_REPARSE_POINT, smb2_data,
|
||||
SMB2_OP_QUERY_INFO);
|
||||
FILE_READ_ATTRIBUTES, FILE_OPEN, 0,
|
||||
smb2_data, SMB2_OP_QUERY_INFO);
|
||||
if (rc == -EOPNOTSUPP) {
|
||||
*symlink = true;
|
||||
/* Failed on a symbolic link - query a reparse point info */
|
||||
rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path,
|
||||
FILE_READ_ATTRIBUTES, FILE_OPEN,
|
||||
OPEN_REPARSE_POINT, smb2_data,
|
||||
SMB2_OP_QUERY_INFO);
|
||||
}
|
||||
if (rc)
|
||||
goto out;
|
||||
|
||||
|
@ -306,7 +306,7 @@ static const struct status_to_posix_error smb2_error_map_table[] = {
|
||||
{STATUS_NONEXISTENT_SECTOR, -EIO, "STATUS_NONEXISTENT_SECTOR"},
|
||||
{STATUS_MORE_PROCESSING_REQUIRED, -EIO,
|
||||
"STATUS_MORE_PROCESSING_REQUIRED"},
|
||||
{STATUS_NO_MEMORY, -ENOMEM, "STATUS_NO_MEMORY"},
|
||||
{STATUS_NO_MEMORY, -EREMOTEIO, "STATUS_NO_MEMORY"},
|
||||
{STATUS_CONFLICTING_ADDRESSES, -EADDRINUSE,
|
||||
"STATUS_CONFLICTING_ADDRESSES"},
|
||||
{STATUS_NOT_MAPPED_VIEW, -EIO, "STATUS_NOT_MAPPED_VIEW"},
|
||||
|
@ -493,6 +493,85 @@ smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
|
||||
}
|
||||
|
||||
static int
|
||||
SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
u64 persistent_fid, u64 volatile_fid,
|
||||
struct copychunk_ioctl *pcchunk)
|
||||
{
|
||||
int rc;
|
||||
unsigned int ret_data_len;
|
||||
struct resume_key_req *res_key;
|
||||
|
||||
rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
|
||||
FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
|
||||
NULL, 0 /* no input */,
|
||||
(char **)&res_key, &ret_data_len);
|
||||
|
||||
if (rc) {
|
||||
cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
|
||||
goto req_res_key_exit;
|
||||
}
|
||||
if (ret_data_len < sizeof(struct resume_key_req)) {
|
||||
cifs_dbg(VFS, "Invalid refcopy resume key length\n");
|
||||
rc = -EINVAL;
|
||||
goto req_res_key_exit;
|
||||
}
|
||||
memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
|
||||
|
||||
req_res_key_exit:
|
||||
kfree(res_key);
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int
|
||||
smb2_clone_range(const unsigned int xid,
|
||||
struct cifsFileInfo *srcfile,
|
||||
struct cifsFileInfo *trgtfile, u64 src_off,
|
||||
u64 len, u64 dest_off)
|
||||
{
|
||||
int rc;
|
||||
unsigned int ret_data_len;
|
||||
struct copychunk_ioctl *pcchunk;
|
||||
char *retbuf = NULL;
|
||||
|
||||
pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
|
||||
|
||||
if (pcchunk == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
|
||||
/* Request a key from the server to identify the source of the copy */
|
||||
rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
|
||||
srcfile->fid.persistent_fid,
|
||||
srcfile->fid.volatile_fid, pcchunk);
|
||||
|
||||
/* Note: request_res_key sets res_key null only if rc !=0 */
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
/* For now array only one chunk long, will make more flexible later */
|
||||
pcchunk->ChunkCount = __constant_cpu_to_le32(1);
|
||||
pcchunk->Reserved = 0;
|
||||
pcchunk->SourceOffset = cpu_to_le64(src_off);
|
||||
pcchunk->TargetOffset = cpu_to_le64(dest_off);
|
||||
pcchunk->Length = cpu_to_le32(len);
|
||||
pcchunk->Reserved2 = 0;
|
||||
|
||||
/* Request that server copy to target from src file identified by key */
|
||||
rc = SMB2_ioctl(xid, tlink_tcon(trgtfile->tlink),
|
||||
trgtfile->fid.persistent_fid,
|
||||
trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
|
||||
true /* is_fsctl */, (char *)pcchunk,
|
||||
sizeof(struct copychunk_ioctl), &retbuf, &ret_data_len);
|
||||
|
||||
/* BB need to special case rc = EINVAL to alter chunk size */
|
||||
|
||||
cifs_dbg(FYI, "rc %d data length out %d\n", rc, ret_data_len);
|
||||
|
||||
kfree(pcchunk);
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int
|
||||
smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
struct cifs_fid *fid)
|
||||
@ -1017,6 +1096,7 @@ struct smb_version_operations smb20_operations = {
|
||||
.set_oplock_level = smb2_set_oplock_level,
|
||||
.create_lease_buf = smb2_create_lease_buf,
|
||||
.parse_lease_buf = smb2_parse_lease_buf,
|
||||
.clone_range = smb2_clone_range,
|
||||
};
|
||||
|
||||
struct smb_version_operations smb21_operations = {
|
||||
@ -1090,6 +1170,7 @@ struct smb_version_operations smb21_operations = {
|
||||
.set_oplock_level = smb21_set_oplock_level,
|
||||
.create_lease_buf = smb2_create_lease_buf,
|
||||
.parse_lease_buf = smb2_parse_lease_buf,
|
||||
.clone_range = smb2_clone_range,
|
||||
};
|
||||
|
||||
struct smb_version_operations smb30_operations = {
|
||||
@ -1165,6 +1246,7 @@ struct smb_version_operations smb30_operations = {
|
||||
.set_oplock_level = smb3_set_oplock_level,
|
||||
.create_lease_buf = smb3_create_lease_buf,
|
||||
.parse_lease_buf = smb3_parse_lease_buf,
|
||||
.clone_range = smb2_clone_range,
|
||||
};
|
||||
|
||||
struct smb_version_values smb20_values = {
|
||||
|
@ -630,6 +630,8 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
|
||||
goto ssetup_exit;
|
||||
|
||||
ses->session_flags = le16_to_cpu(rsp->SessionFlags);
|
||||
if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
|
||||
cifs_dbg(VFS, "SMB3 encryption not supported yet\n");
|
||||
ssetup_exit:
|
||||
free_rsp_buf(resp_buftype, rsp);
|
||||
|
||||
@ -717,6 +719,14 @@ static inline void cifs_stats_fail_inc(struct cifs_tcon *tcon, uint16_t code)
|
||||
|
||||
#define MAX_SHARENAME_LENGTH (255 /* server */ + 80 /* share */ + 1 /* NULL */)
|
||||
|
||||
/* These are similar values to what Windows uses */
|
||||
static inline void init_copy_chunk_defaults(struct cifs_tcon *tcon)
|
||||
{
|
||||
tcon->max_chunks = 256;
|
||||
tcon->max_bytes_chunk = 1048576;
|
||||
tcon->max_bytes_copy = 16777216;
|
||||
}
|
||||
|
||||
int
|
||||
SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
|
||||
struct cifs_tcon *tcon, const struct nls_table *cp)
|
||||
@ -818,7 +828,7 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
|
||||
if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) &&
|
||||
((tcon->share_flags & SHI1005_FLAGS_DFS) == 0))
|
||||
cifs_dbg(VFS, "DFS capability contradicts DFS flag\n");
|
||||
|
||||
init_copy_chunk_defaults(tcon);
|
||||
tcon_exit:
|
||||
free_rsp_buf(resp_buftype, rsp);
|
||||
kfree(unc_path);
|
||||
|
@ -122,6 +122,23 @@ struct smb2_pdu {
|
||||
__le16 StructureSize2; /* size of wct area (varies, request specific) */
|
||||
} __packed;
|
||||
|
||||
struct smb2_transform_hdr {
|
||||
__be32 smb2_buf_length; /* big endian on wire */
|
||||
/* length is only two or three bytes - with
|
||||
one or two byte type preceding it that MBZ */
|
||||
__u8 ProtocolId[4]; /* 0xFD 'S' 'M' 'B' */
|
||||
__u8 Signature[16];
|
||||
__u8 Nonce[11];
|
||||
__u8 Reserved[5];
|
||||
__le32 OriginalMessageSize;
|
||||
__u16 Reserved1;
|
||||
__le16 EncryptionAlgorithm;
|
||||
__u64 SessionId;
|
||||
} __packed;
|
||||
|
||||
/* Encryption Algorithms */
|
||||
#define SMB2_ENCRYPTION_AES128_CCM __constant_cpu_to_le16(0x0001)
|
||||
|
||||
/*
|
||||
* SMB2 flag definitions
|
||||
*/
|
||||
@ -237,6 +254,7 @@ struct smb2_sess_setup_req {
|
||||
/* Currently defined SessionFlags */
|
||||
#define SMB2_SESSION_FLAG_IS_GUEST 0x0001
|
||||
#define SMB2_SESSION_FLAG_IS_NULL 0x0002
|
||||
#define SMB2_SESSION_FLAG_ENCRYPT_DATA 0x0004
|
||||
struct smb2_sess_setup_rsp {
|
||||
struct smb2_hdr hdr;
|
||||
__le16 StructureSize; /* Must be 9 */
|
||||
@ -534,9 +552,16 @@ struct create_durable {
|
||||
} Data;
|
||||
} __packed;
|
||||
|
||||
#define COPY_CHUNK_RES_KEY_SIZE 24
|
||||
struct resume_key_req {
|
||||
char ResumeKey[COPY_CHUNK_RES_KEY_SIZE];
|
||||
__le32 ContextLength; /* MBZ */
|
||||
char Context[0]; /* ignored, Windows sets to 4 bytes of zero */
|
||||
} __packed;
|
||||
|
||||
/* this goes in the ioctl buffer when doing a copychunk request */
|
||||
struct copychunk_ioctl {
|
||||
char SourceKey[24];
|
||||
char SourceKey[COPY_CHUNK_RES_KEY_SIZE];
|
||||
__le32 ChunkCount; /* we are only sending 1 */
|
||||
__le32 Reserved;
|
||||
/* array will only be one chunk long for us */
|
||||
@ -546,6 +571,12 @@ struct copychunk_ioctl {
|
||||
__u32 Reserved2;
|
||||
} __packed;
|
||||
|
||||
struct copychunk_ioctl_rsp {
|
||||
__le32 ChunksWritten;
|
||||
__le32 ChunkBytesWritten;
|
||||
__le32 TotalBytesWritten;
|
||||
} __packed;
|
||||
|
||||
/* Response and Request are the same format */
|
||||
struct validate_negotiate_info {
|
||||
__le32 Capabilities;
|
||||
|
@ -61,7 +61,7 @@ extern void move_smb2_info_to_cifs(FILE_ALL_INFO *dst,
|
||||
extern int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
struct cifs_sb_info *cifs_sb,
|
||||
const char *full_path, FILE_ALL_INFO *data,
|
||||
bool *adjust_tz);
|
||||
bool *adjust_tz, bool *symlink);
|
||||
extern int smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
const char *full_path, __u64 size,
|
||||
struct cifs_sb_info *cifs_sb, bool set_alloc);
|
||||
|
Loading…
Reference in New Issue
Block a user