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-rw-r--r--fs/smb/client/cached_dir.c10
-rw-r--r--fs/smb/client/cifsencrypt.c2
-rw-r--r--fs/smb/client/cifsglob.h2
-rw-r--r--fs/smb/client/fs_context.c2
-rw-r--r--fs/smb/client/readdir.c15
-rw-r--r--fs/smb/client/sess.c2
-rw-r--r--fs/smb/client/smb2ops.c2
-rw-r--r--fs/smb/client/smb2pdu.c99
-rw-r--r--fs/smb/client/smb2proto.h12
-rw-r--r--fs/smb/client/transport.c15
10 files changed, 100 insertions, 61 deletions
diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c
index 5a132c1e6..fd082151c 100644
--- a/fs/smb/client/cached_dir.c
+++ b/fs/smb/client/cached_dir.c
@@ -149,7 +149,7 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
return -EOPNOTSUPP;
ses = tcon->ses;
- server = ses->server;
+ server = cifs_pick_channel(ses);
cfids = tcon->cfids;
if (!server->ops->new_lease_key)
@@ -268,10 +268,12 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
if (o_rsp->OplockLevel != SMB2_OPLOCK_LEVEL_LEASE)
goto oshr_free;
- smb2_parse_contexts(server, o_rsp,
+ rc = smb2_parse_contexts(server, rsp_iov,
&oparms.fid->epoch,
- oparms.fid->lease_key, &oplock,
- NULL, NULL);
+ oparms.fid->lease_key,
+ &oplock, NULL, NULL);
+ if (rc)
+ goto oshr_free;
if (!(oplock & SMB2_LEASE_READ_CACHING_HE))
goto oshr_free;
qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
diff --git a/fs/smb/client/cifsencrypt.c b/fs/smb/client/cifsencrypt.c
index d0ac2648c..d3d4cf632 100644
--- a/fs/smb/client/cifsencrypt.c
+++ b/fs/smb/client/cifsencrypt.c
@@ -444,7 +444,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
len = cifs_strtoUTF16(user, ses->user_name, len, nls_cp);
UniStrupr(user);
} else {
- memset(user, '\0', 2);
+ *(u16 *)user = 0;
}
rc = crypto_shash_update(ses->server->secmech.hmacmd5,
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index 7f1aea4c1..58bb54994 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -86,7 +86,7 @@
#define SMB_INTERFACE_POLL_INTERVAL 600
/* maximum number of PDUs in one compound */
-#define MAX_COMPOUND 5
+#define MAX_COMPOUND 7
/*
* Default number of credits to keep available for SMB3.
diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c
index f4818599c..4d5302b58 100644
--- a/fs/smb/client/fs_context.c
+++ b/fs/smb/client/fs_context.c
@@ -209,7 +209,7 @@ cifs_parse_security_flavors(struct fs_context *fc, char *value, struct smb3_fs_c
switch (match_token(value, cifs_secflavor_tokens, args)) {
case Opt_sec_krb5p:
- cifs_errorf(fc, "sec=krb5p is not supported!\n");
+ cifs_errorf(fc, "sec=krb5p is not supported. Use sec=krb5,seal instead\n");
return 1;
case Opt_sec_krb5i:
ctx->sign = true;
diff --git a/fs/smb/client/readdir.c b/fs/smb/client/readdir.c
index 2d75ba5aa..5990bdbae 100644
--- a/fs/smb/client/readdir.c
+++ b/fs/smb/client/readdir.c
@@ -304,14 +304,16 @@ cifs_dir_info_to_fattr(struct cifs_fattr *fattr, FILE_DIRECTORY_INFO *info,
}
static void cifs_fulldir_info_to_fattr(struct cifs_fattr *fattr,
- SEARCH_ID_FULL_DIR_INFO *info,
+ const void *info,
struct cifs_sb_info *cifs_sb)
{
+ const FILE_FULL_DIRECTORY_INFO *di = info;
+
__dir_info_to_fattr(fattr, info);
- /* See MS-FSCC 2.4.19 FileIdFullDirectoryInformation */
+ /* See MS-FSCC 2.4.14, 2.4.19 */
if (fattr->cf_cifsattrs & ATTR_REPARSE)
- fattr->cf_cifstag = le32_to_cpu(info->EaSize);
+ fattr->cf_cifstag = le32_to_cpu(di->EaSize);
cifs_fill_common_info(fattr, cifs_sb);
}
@@ -425,7 +427,7 @@ ffirst_retry:
} else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
cifsFile->srch_inf.info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
} else /* not srvinos - BB fixme add check for backlevel? */ {
- cifsFile->srch_inf.info_level = SMB_FIND_FILE_DIRECTORY_INFO;
+ cifsFile->srch_inf.info_level = SMB_FIND_FILE_FULL_DIRECTORY_INFO;
}
search_flags = CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME;
@@ -1019,10 +1021,9 @@ static int cifs_filldir(char *find_entry, struct file *file,
(FIND_FILE_STANDARD_INFO *)find_entry,
cifs_sb);
break;
+ case SMB_FIND_FILE_FULL_DIRECTORY_INFO:
case SMB_FIND_FILE_ID_FULL_DIR_INFO:
- cifs_fulldir_info_to_fattr(&fattr,
- (SEARCH_ID_FULL_DIR_INFO *)find_entry,
- cifs_sb);
+ cifs_fulldir_info_to_fattr(&fattr, find_entry, cifs_sb);
break;
default:
cifs_dir_info_to_fattr(&fattr,
diff --git a/fs/smb/client/sess.c b/fs/smb/client/sess.c
index 634035bcb..b8e14bcd2 100644
--- a/fs/smb/client/sess.c
+++ b/fs/smb/client/sess.c
@@ -248,6 +248,8 @@ int cifs_try_adding_channels(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses)
&iface->sockaddr,
rc);
kref_put(&iface->refcount, release_iface);
+ /* failure to add chan should increase weight */
+ iface->weight_fulfilled++;
continue;
}
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index 5a157000b..34d126200 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -613,7 +613,7 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
goto out;
}
- while (bytes_left >= sizeof(*p)) {
+ while (bytes_left >= (ssize_t)sizeof(*p)) {
memset(&tmp_iface, 0, sizeof(tmp_iface));
tmp_iface.speed = le64_to_cpu(p->LinkSpeed);
tmp_iface.rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE) ? 1 : 0;
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index e65f998ea..4c1231496 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -2145,17 +2145,18 @@ parse_posix_ctxt(struct create_context *cc, struct smb2_file_all_info *info,
posix->nlink, posix->mode, posix->reparse_tag);
}
-void
-smb2_parse_contexts(struct TCP_Server_Info *server,
- struct smb2_create_rsp *rsp,
- unsigned int *epoch, char *lease_key, __u8 *oplock,
- struct smb2_file_all_info *buf,
- struct create_posix_rsp *posix)
+int smb2_parse_contexts(struct TCP_Server_Info *server,
+ struct kvec *rsp_iov,
+ unsigned int *epoch,
+ char *lease_key, __u8 *oplock,
+ struct smb2_file_all_info *buf,
+ struct create_posix_rsp *posix)
{
- char *data_offset;
+ struct smb2_create_rsp *rsp = rsp_iov->iov_base;
struct create_context *cc;
- unsigned int next;
- unsigned int remaining;
+ size_t rem, off, len;
+ size_t doff, dlen;
+ size_t noff, nlen;
char *name;
static const char smb3_create_tag_posix[] = {
0x93, 0xAD, 0x25, 0x50, 0x9C,
@@ -2164,45 +2165,63 @@ smb2_parse_contexts(struct TCP_Server_Info *server,
};
*oplock = 0;
- data_offset = (char *)rsp + le32_to_cpu(rsp->CreateContextsOffset);
- remaining = le32_to_cpu(rsp->CreateContextsLength);
- cc = (struct create_context *)data_offset;
+
+ off = le32_to_cpu(rsp->CreateContextsOffset);
+ rem = le32_to_cpu(rsp->CreateContextsLength);
+ if (check_add_overflow(off, rem, &len) || len > rsp_iov->iov_len)
+ return -EINVAL;
+ cc = (struct create_context *)((u8 *)rsp + off);
/* Initialize inode number to 0 in case no valid data in qfid context */
if (buf)
buf->IndexNumber = 0;
- while (remaining >= sizeof(struct create_context)) {
- name = le16_to_cpu(cc->NameOffset) + (char *)cc;
- if (le16_to_cpu(cc->NameLength) == 4 &&
- strncmp(name, SMB2_CREATE_REQUEST_LEASE, 4) == 0)
- *oplock = server->ops->parse_lease_buf(cc, epoch,
- lease_key);
- else if (buf && (le16_to_cpu(cc->NameLength) == 4) &&
- strncmp(name, SMB2_CREATE_QUERY_ON_DISK_ID, 4) == 0)
- parse_query_id_ctxt(cc, buf);
- else if ((le16_to_cpu(cc->NameLength) == 16)) {
- if (posix &&
- memcmp(name, smb3_create_tag_posix, 16) == 0)
+ while (rem >= sizeof(*cc)) {
+ doff = le16_to_cpu(cc->DataOffset);
+ dlen = le32_to_cpu(cc->DataLength);
+ if (check_add_overflow(doff, dlen, &len) || len > rem)
+ return -EINVAL;
+
+ noff = le16_to_cpu(cc->NameOffset);
+ nlen = le16_to_cpu(cc->NameLength);
+ if (noff + nlen > doff)
+ return -EINVAL;
+
+ name = (char *)cc + noff;
+ switch (nlen) {
+ case 4:
+ if (!strncmp(name, SMB2_CREATE_REQUEST_LEASE, 4)) {
+ *oplock = server->ops->parse_lease_buf(cc, epoch,
+ lease_key);
+ } else if (buf &&
+ !strncmp(name, SMB2_CREATE_QUERY_ON_DISK_ID, 4)) {
+ parse_query_id_ctxt(cc, buf);
+ }
+ break;
+ case 16:
+ if (posix && !memcmp(name, smb3_create_tag_posix, 16))
parse_posix_ctxt(cc, buf, posix);
+ break;
+ default:
+ cifs_dbg(FYI, "%s: unhandled context (nlen=%zu dlen=%zu)\n",
+ __func__, nlen, dlen);
+ if (IS_ENABLED(CONFIG_CIFS_DEBUG2))
+ cifs_dump_mem("context data: ", cc, dlen);
+ break;
}
- /* else {
- cifs_dbg(FYI, "Context not matched with len %d\n",
- le16_to_cpu(cc->NameLength));
- cifs_dump_mem("Cctxt name: ", name, 4);
- } */
-
- next = le32_to_cpu(cc->Next);
- if (!next)
+
+ off = le32_to_cpu(cc->Next);
+ if (!off)
break;
- remaining -= next;
- cc = (struct create_context *)((char *)cc + next);
+ if (check_sub_overflow(rem, off, &rem))
+ return -EINVAL;
+ cc = (struct create_context *)((u8 *)cc + off);
}
if (rsp->OplockLevel != SMB2_OPLOCK_LEVEL_LEASE)
*oplock = rsp->OplockLevel;
- return;
+ return 0;
}
static int
@@ -3082,8 +3101,8 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
}
- smb2_parse_contexts(server, rsp, &oparms->fid->epoch,
- oparms->fid->lease_key, oplock, buf, posix);
+ rc = smb2_parse_contexts(server, &rsp_iov, &oparms->fid->epoch,
+ oparms->fid->lease_key, oplock, buf, posix);
creat_exit:
SMB2_open_free(&rqst);
free_rsp_buf(resp_buftype, rsp);
@@ -4991,6 +5010,9 @@ int SMB2_query_directory_init(const unsigned int xid,
case SMB_FIND_FILE_POSIX_INFO:
req->FileInformationClass = SMB_FIND_FILE_POSIX_INFO;
break;
+ case SMB_FIND_FILE_FULL_DIRECTORY_INFO:
+ req->FileInformationClass = FILE_FULL_DIRECTORY_INFORMATION;
+ break;
default:
cifs_tcon_dbg(VFS, "info level %u isn't supported\n",
info_level);
@@ -5060,6 +5082,9 @@ smb2_parse_query_directory(struct cifs_tcon *tcon,
/* note that posix payload are variable size */
info_buf_size = sizeof(struct smb2_posix_info);
break;
+ case SMB_FIND_FILE_FULL_DIRECTORY_INFO:
+ info_buf_size = sizeof(FILE_FULL_DIRECTORY_INFO);
+ break;
default:
cifs_tcon_dbg(VFS, "info level %u isn't supported\n",
srch_inf->info_level);
diff --git a/fs/smb/client/smb2proto.h b/fs/smb/client/smb2proto.h
index be21b5d26..b325fde01 100644
--- a/fs/smb/client/smb2proto.h
+++ b/fs/smb/client/smb2proto.h
@@ -249,11 +249,13 @@ extern int smb3_validate_negotiate(const unsigned int, struct cifs_tcon *);
extern enum securityEnum smb2_select_sectype(struct TCP_Server_Info *,
enum securityEnum);
-extern void smb2_parse_contexts(struct TCP_Server_Info *server,
- struct smb2_create_rsp *rsp,
- unsigned int *epoch, char *lease_key,
- __u8 *oplock, struct smb2_file_all_info *buf,
- struct create_posix_rsp *posix);
+int smb2_parse_contexts(struct TCP_Server_Info *server,
+ struct kvec *rsp_iov,
+ unsigned int *epoch,
+ char *lease_key, __u8 *oplock,
+ struct smb2_file_all_info *buf,
+ struct create_posix_rsp *posix);
+
extern int smb3_encryption_required(const struct cifs_tcon *tcon);
extern int smb2_validate_iov(unsigned int offset, unsigned int buffer_length,
struct kvec *iov, unsigned int min_buf_size);
diff --git a/fs/smb/client/transport.c b/fs/smb/client/transport.c
index 8a1dd8407..df44acaec 100644
--- a/fs/smb/client/transport.c
+++ b/fs/smb/client/transport.c
@@ -427,10 +427,17 @@ unmask:
server->conn_id, server->hostname);
}
smbd_done:
- if (rc < 0 && rc != -EINTR)
+ /*
+ * there's hardly any use for the layers above to know the
+ * actual error code here. All they should do at this point is
+ * to retry the connection and hope it goes away.
+ */
+ if (rc < 0 && rc != -EINTR && rc != -EAGAIN) {
cifs_server_dbg(VFS, "Error %d sending data on socket to server\n",
rc);
- else if (rc > 0)
+ rc = -ECONNABORTED;
+ cifs_signal_cifsd_for_reconnect(server, false);
+ } else if (rc > 0)
rc = 0;
out:
cifs_in_send_dec(server);
@@ -449,8 +456,8 @@ smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
if (!(flags & CIFS_TRANSFORM_REQ))
return __smb_send_rqst(server, num_rqst, rqst);
- if (num_rqst > MAX_COMPOUND - 1)
- return -ENOMEM;
+ if (WARN_ON_ONCE(num_rqst > MAX_COMPOUND - 1))
+ return -EIO;
if (!server->ops->init_transform_rq) {
cifs_server_dbg(VFS, "Encryption requested but transform callback is missing\n");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 05:32:05 +0000