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path: root/fs/smb/client/smb2ops.c
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Diffstat (limited to 'fs/smb/client/smb2ops.c')
-rw-r--r--fs/smb/client/smb2ops.c185
1 files changed, 100 insertions, 85 deletions
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index 24a2aa04a108..1468c16ea9b8 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -464,12 +464,20 @@ smb2_negotiate(const unsigned int xid,
server->CurrentMid = 0;
spin_unlock(&server->mid_lock);
rc = SMB2_negotiate(xid, ses, server);
- /* BB we probably don't need to retry with modern servers */
- if (rc == -EAGAIN)
- rc = -EHOSTDOWN;
return rc;
}
+static inline unsigned int
+prevent_zero_iosize(unsigned int size, const char *type)
+{
+ if (size == 0) {
+ cifs_dbg(VFS, "SMB: Zero %ssize calculated, using minimum value %u\n",
+ type, CIFS_MIN_DEFAULT_IOSIZE);
+ return CIFS_MIN_DEFAULT_IOSIZE;
+ }
+ return size;
+}
+
static unsigned int
smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
{
@@ -477,12 +485,12 @@ smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
unsigned int wsize;
/* start with specified wsize, or default */
- wsize = ctx->wsize ? ctx->wsize : CIFS_DEFAULT_IOSIZE;
+ wsize = ctx->got_wsize ? ctx->vol_wsize : CIFS_DEFAULT_IOSIZE;
wsize = min_t(unsigned int, wsize, server->max_write);
if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
- return wsize;
+ return prevent_zero_iosize(wsize, "w");
}
static unsigned int
@@ -492,10 +500,13 @@ smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
unsigned int wsize;
/* start with specified wsize, or default */
- wsize = ctx->wsize ? ctx->wsize : SMB3_DEFAULT_IOSIZE;
+ wsize = ctx->got_wsize ? ctx->vol_wsize : SMB3_DEFAULT_IOSIZE;
wsize = min_t(unsigned int, wsize, server->max_write);
#ifdef CONFIG_CIFS_SMB_DIRECT
if (server->rdma) {
+ struct smbdirect_socket_parameters *sp =
+ &server->smbd_conn->socket.parameters;
+
if (server->sign)
/*
* Account for SMB2 data transfer packet header and
@@ -503,18 +514,18 @@ smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
*/
wsize = min_t(unsigned int,
wsize,
- server->smbd_conn->max_fragmented_send_size -
+ sp->max_fragmented_send_size -
SMB2_READWRITE_PDU_HEADER_SIZE -
sizeof(struct smb2_transform_hdr));
else
wsize = min_t(unsigned int,
- wsize, server->smbd_conn->max_readwrite_size);
+ wsize, sp->max_read_write_size);
}
#endif
if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
- return wsize;
+ return prevent_zero_iosize(wsize, "w");
}
static unsigned int
@@ -524,13 +535,13 @@ smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
unsigned int rsize;
/* start with specified rsize, or default */
- rsize = ctx->rsize ? ctx->rsize : CIFS_DEFAULT_IOSIZE;
+ rsize = ctx->got_rsize ? ctx->vol_rsize : CIFS_DEFAULT_IOSIZE;
rsize = min_t(unsigned int, rsize, server->max_read);
if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
- return rsize;
+ return prevent_zero_iosize(rsize, "r");
}
static unsigned int
@@ -540,10 +551,13 @@ smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
unsigned int rsize;
/* start with specified rsize, or default */
- rsize = ctx->rsize ? ctx->rsize : SMB3_DEFAULT_IOSIZE;
+ rsize = ctx->got_rsize ? ctx->vol_rsize : SMB3_DEFAULT_IOSIZE;
rsize = min_t(unsigned int, rsize, server->max_read);
#ifdef CONFIG_CIFS_SMB_DIRECT
if (server->rdma) {
+ struct smbdirect_socket_parameters *sp =
+ &server->smbd_conn->socket.parameters;
+
if (server->sign)
/*
* Account for SMB2 data transfer packet header and
@@ -551,19 +565,19 @@ smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
*/
rsize = min_t(unsigned int,
rsize,
- server->smbd_conn->max_fragmented_recv_size -
+ sp->max_fragmented_recv_size -
SMB2_READWRITE_PDU_HEADER_SIZE -
sizeof(struct smb2_transform_hdr));
else
rsize = min_t(unsigned int,
- rsize, server->smbd_conn->max_readwrite_size);
+ rsize, sp->max_read_write_size);
}
#endif
if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
- return rsize;
+ return prevent_zero_iosize(rsize, "r");
}
/*
@@ -658,7 +672,8 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
while (bytes_left >= (ssize_t)sizeof(*p)) {
memset(&tmp_iface, 0, sizeof(tmp_iface));
- tmp_iface.speed = le64_to_cpu(p->LinkSpeed);
+ /* default to 1Gbps when link speed is unset */
+ tmp_iface.speed = le64_to_cpu(p->LinkSpeed) ?: 1000000000;
tmp_iface.rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE) ? 1 : 0;
tmp_iface.rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE) ? 1 : 0;
@@ -968,7 +983,7 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
if (islink)
rc = -EREMOTE;
}
- if (rc == -EREMOTE && IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) && cifs_sb &&
+ if (rc == -EREMOTE && IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) &&
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS))
rc = -EOPNOTSUPP;
goto out;
@@ -1000,6 +1015,7 @@ static int smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
if (!data->symlink_target)
return -ENOMEM;
}
+ data->contains_posix_file_info = false;
return SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, &data->fi);
}
@@ -2606,7 +2622,7 @@ smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
struct cifs_ses *ses = tcon->ses;
struct TCP_Server_Info *server = ses->server;
unsigned long len = smb_rqst_len(server, rqst);
- int i, num_padding;
+ int num_padding;
shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base);
if (shdr == NULL) {
@@ -2615,44 +2631,13 @@ smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
}
/* SMB headers in a compound are 8 byte aligned. */
-
- /* No padding needed */
- if (!(len & 7))
- goto finished;
-
- num_padding = 8 - (len & 7);
- if (!smb3_encryption_required(tcon)) {
- /*
- * If we do not have encryption then we can just add an extra
- * iov for the padding.
- */
+ if (!IS_ALIGNED(len, 8)) {
+ num_padding = 8 - (len & 7);
rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
rqst->rq_nvec++;
len += num_padding;
- } else {
- /*
- * We can not add a small padding iov for the encryption case
- * because the encryption framework can not handle the padding
- * iovs.
- * We have to flatten this into a single buffer and add
- * the padding to it.
- */
- for (i = 1; i < rqst->rq_nvec; i++) {
- memcpy(rqst->rq_iov[0].iov_base +
- rqst->rq_iov[0].iov_len,
- rqst->rq_iov[i].iov_base,
- rqst->rq_iov[i].iov_len);
- rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
- }
- memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
- 0, num_padding);
- rqst->rq_iov[0].iov_len += num_padding;
- len += num_padding;
- rqst->rq_nvec = 1;
}
-
- finished:
shdr->NextCommand = cpu_to_le32(len);
}
@@ -2963,7 +2948,7 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
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;
- int retry_count = 0;
+ int retry_once = 0;
cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
@@ -3012,21 +2997,25 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
/* Path to resolve in an UTF-16 null-terminated string */
memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
- do {
+ for (;;) {
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
FSCTL_DFS_GET_REFERRALS,
(char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
(char **)&dfs_rsp, &dfs_rsp_size);
- if (!is_retryable_error(rc))
+ if (fatal_signal_pending(current)) {
+ rc = -EINTR;
+ break;
+ }
+ if (!is_retryable_error(rc) || retry_once++)
break;
usleep_range(512, 2048);
- } while (++retry_count < 5);
+ }
if (!rc && !dfs_rsp)
rc = -EIO;
if (rc) {
if (!is_retryable_error(rc) && rc != -ENOENT && rc != -EOPNOTSUPP)
- cifs_tcon_dbg(VFS, "%s: ioctl error: rc=%d\n", __func__, rc);
+ cifs_tcon_dbg(FYI, "%s: ioctl error: rc=%d\n", __func__, rc);
goto out;
}
@@ -3034,9 +3023,9 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
num_of_nodes, target_nodes,
nls_codepage, remap, search_name,
true /* is_unicode */);
- if (rc) {
- cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
- goto out;
+ if (rc && rc != -ENOENT) {
+ cifs_tcon_dbg(VFS, "%s: failed to parse DFS referral %s: %d\n",
+ __func__, search_name, rc);
}
out:
@@ -3551,8 +3540,6 @@ static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
if (rc == 0) {
netfs_resize_file(&cifsi->netfs, new_eof, true);
cifs_setsize(inode, new_eof);
- cifs_truncate_page(inode->i_mapping, inode->i_size);
- truncate_setsize(inode, new_eof);
}
goto out;
}
@@ -3930,22 +3917,22 @@ static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
static void
smb2_downgrade_oplock(struct TCP_Server_Info *server,
struct cifsInodeInfo *cinode, __u32 oplock,
- unsigned int epoch, bool *purge_cache)
+ __u16 epoch, bool *purge_cache)
{
server->ops->set_oplock_level(cinode, oplock, 0, NULL);
}
static void
smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
- unsigned int epoch, bool *purge_cache);
+ __u16 epoch, bool *purge_cache);
static void
smb3_downgrade_oplock(struct TCP_Server_Info *server,
struct cifsInodeInfo *cinode, __u32 oplock,
- unsigned int epoch, bool *purge_cache)
+ __u16 epoch, bool *purge_cache)
{
unsigned int old_state = cinode->oplock;
- unsigned int old_epoch = cinode->epoch;
+ __u16 old_epoch = cinode->epoch;
unsigned int new_state;
if (epoch > old_epoch) {
@@ -3965,7 +3952,7 @@ smb3_downgrade_oplock(struct TCP_Server_Info *server,
static void
smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
- unsigned int epoch, bool *purge_cache)
+ __u16 epoch, bool *purge_cache)
{
oplock &= 0xFF;
cinode->lease_granted = false;
@@ -3989,7 +3976,7 @@ smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
static void
smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
- unsigned int epoch, bool *purge_cache)
+ __u16 epoch, bool *purge_cache)
{
char message[5] = {0};
unsigned int new_oplock = 0;
@@ -4026,7 +4013,7 @@ smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
static void
smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
- unsigned int epoch, bool *purge_cache)
+ __u16 epoch, bool *purge_cache)
{
unsigned int old_oplock = cinode->oplock;
@@ -4080,7 +4067,7 @@ map_oplock_to_lease(u8 oplock)
if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
return SMB2_LEASE_WRITE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE;
else if (oplock == SMB2_OPLOCK_LEVEL_II)
- return SMB2_LEASE_READ_CACHING_LE;
+ return SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE;
else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
return SMB2_LEASE_HANDLE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE |
SMB2_LEASE_WRITE_CACHING_LE;
@@ -4088,7 +4075,7 @@ map_oplock_to_lease(u8 oplock)
}
static char *
-smb2_create_lease_buf(u8 *lease_key, u8 oplock)
+smb2_create_lease_buf(u8 *lease_key, u8 oplock, u8 *parent_lease_key, __le32 flags)
{
struct create_lease *buf;
@@ -4114,7 +4101,7 @@ smb2_create_lease_buf(u8 *lease_key, u8 oplock)
}
static char *
-smb3_create_lease_buf(u8 *lease_key, u8 oplock)
+smb3_create_lease_buf(u8 *lease_key, u8 oplock, u8 *parent_lease_key, __le32 flags)
{
struct create_lease_v2 *buf;
@@ -4124,6 +4111,9 @@ smb3_create_lease_buf(u8 *lease_key, u8 oplock)
memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
+ buf->lcontext.LeaseFlags = flags;
+ if (flags & SMB2_LEASE_FLAG_PARENT_LEASE_KEY_SET_LE)
+ memcpy(&buf->lcontext.ParentLeaseKey, parent_lease_key, SMB2_LEASE_KEY_SIZE);
buf->ccontext.DataOffset = cpu_to_le16(offsetof
(struct create_lease_v2, lcontext));
@@ -4140,7 +4130,7 @@ smb3_create_lease_buf(u8 *lease_key, u8 oplock)
}
static __u8
-smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
+smb2_parse_lease_buf(void *buf, __u16 *epoch, char *lease_key)
{
struct create_lease *lc = (struct create_lease *)buf;
@@ -4151,7 +4141,7 @@ smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
}
static __u8
-smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
+smb3_parse_lease_buf(void *buf, __u16 *epoch, char *lease_key)
{
struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
@@ -4415,7 +4405,7 @@ static struct folio_queue *cifs_alloc_folioq_buffer(ssize_t size)
p = kmalloc(sizeof(*p), GFP_NOFS);
if (!p)
goto nomem;
- folioq_init(p);
+ folioq_init(p, 0);
if (tail) {
tail->next = p;
p->prev = tail;
@@ -4574,9 +4564,9 @@ decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
return rc;
}
} else {
- if (unlikely(!server->secmech.dec))
- return -EIO;
-
+ rc = smb3_crypto_aead_allocate(server);
+ if (unlikely(rc))
+ return rc;
tfm = server->secmech.dec;
}
@@ -4990,6 +4980,10 @@ one_more:
next_buffer = (char *)cifs_buf_get();
else
next_buffer = (char *)cifs_small_buf_get();
+ if (!next_buffer) {
+ cifs_server_dbg(VFS, "No memory for (large) SMB response\n");
+ return -1;
+ }
memcpy(next_buffer, buf + next_cmd, pdu_length - next_cmd);
}
@@ -5103,6 +5097,7 @@ int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
{
struct TCP_Server_Info *server = tcon->ses->server;
struct cifs_open_parms oparms;
+ struct cifs_open_info_data idata;
struct cifs_io_parms io_parms = {};
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifs_fid fid;
@@ -5171,11 +5166,21 @@ int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
FILE_CREATE, CREATE_NOT_DIR |
CREATE_OPTION_SPECIAL, ACL_NO_MODE);
oparms.fid = &fid;
-
- rc = server->ops->open(xid, &oparms, &oplock, NULL);
+ idata.contains_posix_file_info = false;
+ rc = server->ops->open(xid, &oparms, &oplock, &idata);
if (rc)
goto out;
+ /*
+ * Check if the server honored ATTR_SYSTEM flag by CREATE_OPTION_SPECIAL
+ * option. If not then server does not support ATTR_SYSTEM and newly
+ * created file is not SFU compatible, which means that the call failed.
+ */
+ if (!(le32_to_cpu(idata.fi.Attributes) & ATTR_SYSTEM)) {
+ rc = -EOPNOTSUPP;
+ goto out_close;
+ }
+
if (type_len + data_len > 0) {
io_parms.pid = current->tgid;
io_parms.tcon = tcon;
@@ -5190,8 +5195,18 @@ int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
iov, ARRAY_SIZE(iov)-1);
}
+out_close:
server->ops->close(xid, tcon, &fid);
+ /*
+ * If CREATE was successful but either setting ATTR_SYSTEM failed or
+ * writing type/data information failed then remove the intermediate
+ * object created by CREATE. Otherwise intermediate empty object stay
+ * on the server.
+ */
+ if (rc)
+ server->ops->unlink(xid, tcon, full_path, cifs_sb, NULL);
+
out:
kfree(symname_utf16);
return rc;
@@ -5229,7 +5244,7 @@ static int smb2_make_node(unsigned int xid, struct inode *inode,
const char *full_path, umode_t mode, dev_t dev)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- int rc;
+ int rc = -EOPNOTSUPP;
/*
* Check if mounted with mount parm 'sfu' mount parm.
@@ -5240,7 +5255,7 @@ static int smb2_make_node(unsigned int xid, struct inode *inode,
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
rc = cifs_sfu_make_node(xid, inode, dentry, tcon,
full_path, mode, dev);
- } else {
+ } else if (le32_to_cpu(tcon->fsAttrInfo.Attributes) & FILE_SUPPORTS_REPARSE_POINTS) {
rc = smb2_mknod_reparse(xid, inode, dentry, tcon,
full_path, mode, dev);
}
@@ -5297,7 +5312,7 @@ struct smb_version_operations smb20_operations = {
.unlink = smb2_unlink,
.rename = smb2_rename_path,
.create_hardlink = smb2_create_hardlink,
- .parse_reparse_point = smb2_parse_reparse_point,
+ .get_reparse_point_buffer = smb2_get_reparse_point_buffer,
.query_mf_symlink = smb3_query_mf_symlink,
.create_mf_symlink = smb3_create_mf_symlink,
.create_reparse_symlink = smb2_create_reparse_symlink,
@@ -5400,7 +5415,7 @@ struct smb_version_operations smb21_operations = {
.unlink = smb2_unlink,
.rename = smb2_rename_path,
.create_hardlink = smb2_create_hardlink,
- .parse_reparse_point = smb2_parse_reparse_point,
+ .get_reparse_point_buffer = smb2_get_reparse_point_buffer,
.query_mf_symlink = smb3_query_mf_symlink,
.create_mf_symlink = smb3_create_mf_symlink,
.create_reparse_symlink = smb2_create_reparse_symlink,
@@ -5507,7 +5522,7 @@ struct smb_version_operations smb30_operations = {
.unlink = smb2_unlink,
.rename = smb2_rename_path,
.create_hardlink = smb2_create_hardlink,
- .parse_reparse_point = smb2_parse_reparse_point,
+ .get_reparse_point_buffer = smb2_get_reparse_point_buffer,
.query_mf_symlink = smb3_query_mf_symlink,
.create_mf_symlink = smb3_create_mf_symlink,
.create_reparse_symlink = smb2_create_reparse_symlink,
@@ -5623,7 +5638,7 @@ struct smb_version_operations smb311_operations = {
.unlink = smb2_unlink,
.rename = smb2_rename_path,
.create_hardlink = smb2_create_hardlink,
- .parse_reparse_point = smb2_parse_reparse_point,
+ .get_reparse_point_buffer = smb2_get_reparse_point_buffer,
.query_mf_symlink = smb3_query_mf_symlink,
.create_mf_symlink = smb3_create_mf_symlink,
.create_reparse_symlink = smb2_create_reparse_symlink,
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-26 04:03:27 +0300