mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
cifs: update smb2_queryfs() to use compounding
Change smb2_queryfs() to use a Create/QueryInfo/Close compound request. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Paulo Alcantara <palcantara@suse.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
This commit is contained in:
Ronnie Sahlberg
Steve French
parent
b24df3e30c
commit
730928c8f4
4 changed files with 131 additions and 26 deletions
|
|
@ -1524,15 +1524,66 @@ smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
|
|||
CIFS_CACHE_READ(cinode) ? 1 : 0);
|
||||
}
|
||||
|
||||
static void
|
||||
smb2_set_related(struct smb_rqst *rqst)
|
||||
{
|
||||
struct smb2_sync_hdr *shdr;
|
||||
|
||||
shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
|
||||
shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
|
||||
}
|
||||
|
||||
char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
|
||||
|
||||
static void
|
||||
smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst)
|
||||
{
|
||||
struct smb2_sync_hdr *shdr;
|
||||
unsigned long len = smb_rqst_len(server, rqst);
|
||||
|
||||
/* SMB headers in a compound are 8 byte aligned. */
|
||||
if (len & 7) {
|
||||
rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
|
||||
rqst->rq_iov[rqst->rq_nvec].iov_len = 8 - (len & 7);
|
||||
rqst->rq_nvec++;
|
||||
len = smb_rqst_len(server, rqst);
|
||||
}
|
||||
|
||||
shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
|
||||
shdr->NextCommand = cpu_to_le32(len);
|
||||
}
|
||||
|
||||
static int
|
||||
smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
struct kstatfs *buf)
|
||||
{
|
||||
int rc;
|
||||
struct smb2_query_info_rsp *rsp;
|
||||
struct smb2_fs_full_size_info *info = NULL;
|
||||
struct smb_rqst rqst[3];
|
||||
int resp_buftype[3];
|
||||
struct kvec rsp_iov[3];
|
||||
struct kvec open_iov[5]; /* 4 + potential padding. */
|
||||
struct kvec qi_iov[1];
|
||||
struct kvec close_iov[1];
|
||||
struct cifs_ses *ses = tcon->ses;
|
||||
struct TCP_Server_Info *server = ses->server;
|
||||
__le16 srch_path = 0; /* Null - open root of share */
|
||||
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
||||
struct cifs_open_parms oparms;
|
||||
struct cifs_fid fid;
|
||||
int flags = 0;
|
||||
int rc;
|
||||
|
||||
if (smb3_encryption_required(tcon))
|
||||
flags |= CIFS_TRANSFORM_REQ;
|
||||
|
||||
memset(rqst, 0, sizeof(rqst));
|
||||
memset(resp_buftype, 0, sizeof(resp_buftype));
|
||||
memset(rsp_iov, 0, sizeof(rsp_iov));
|
||||
|
||||
memset(&open_iov, 0, sizeof(open_iov));
|
||||
rqst[0].rq_iov = open_iov;
|
||||
rqst[0].rq_nvec = 4;
|
||||
|
||||
oparms.tcon = tcon;
|
||||
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
||||
|
|
@ -1541,13 +1592,56 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
oparms.fid = &fid;
|
||||
oparms.reconnect = false;
|
||||
|
||||
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
|
||||
rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &srch_path);
|
||||
if (rc)
|
||||
return rc;
|
||||
goto qfs_exit;
|
||||
smb2_set_next_command(server, &rqst[0]);
|
||||
|
||||
memset(&qi_iov, 0, sizeof(qi_iov));
|
||||
rqst[1].rq_iov = qi_iov;
|
||||
rqst[1].rq_nvec = 1;
|
||||
|
||||
rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
|
||||
FS_FULL_SIZE_INFORMATION,
|
||||
SMB2_O_INFO_FILESYSTEM, 0,
|
||||
sizeof(struct smb2_fs_full_size_info));
|
||||
if (rc)
|
||||
goto qfs_exit;
|
||||
smb2_set_next_command(server, &rqst[1]);
|
||||
smb2_set_related(&rqst[1]);
|
||||
|
||||
memset(&close_iov, 0, sizeof(close_iov));
|
||||
rqst[2].rq_iov = close_iov;
|
||||
rqst[2].rq_nvec = 1;
|
||||
|
||||
rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
|
||||
if (rc)
|
||||
goto qfs_exit;
|
||||
smb2_set_related(&rqst[2]);
|
||||
|
||||
rc = compound_send_recv(xid, ses, flags, 3, rqst,
|
||||
resp_buftype, rsp_iov);
|
||||
if (rc)
|
||||
goto qfs_exit;
|
||||
|
||||
rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
|
||||
buf->f_type = SMB2_MAGIC_NUMBER;
|
||||
rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
|
||||
buf);
|
||||
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
||||
info = (struct smb2_fs_full_size_info *)(
|
||||
le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
|
||||
rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
||||
le32_to_cpu(rsp->OutputBufferLength),
|
||||
&rsp_iov[1],
|
||||
sizeof(struct smb2_fs_full_size_info));
|
||||
if (!rc)
|
||||
smb2_copy_fs_info_to_kstatfs(info, buf);
|
||||
|
||||
qfs_exit:
|
||||
SMB2_open_free(&rqst[0]);
|
||||
SMB2_query_info_free(&rqst[1]);
|
||||
SMB2_close_free(&rqst[2]);
|
||||
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
|
||||
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
||||
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -80,7 +80,7 @@ static const int smb2_req_struct_sizes[NUMBER_OF_SMB2_COMMANDS] = {
|
|||
/* SMB2_OPLOCK_BREAK */ 24 /* BB this is 36 for LEASE_BREAK variant */
|
||||
};
|
||||
|
||||
static int smb3_encryption_required(const struct cifs_tcon *tcon)
|
||||
int smb3_encryption_required(const struct cifs_tcon *tcon)
|
||||
{
|
||||
if (!tcon)
|
||||
return 0;
|
||||
|
|
@ -2182,7 +2182,8 @@ SMB2_open_free(struct smb_rqst *rqst)
|
|||
|
||||
cifs_small_buf_release(rqst->rq_iov[0].iov_base);
|
||||
for (i = 1; i < rqst->rq_nvec; i++)
|
||||
kfree(rqst->rq_iov[i].iov_base);
|
||||
if (rqst->rq_iov[i].iov_base != smb2_padding)
|
||||
kfree(rqst->rq_iov[i].iov_base);
|
||||
}
|
||||
|
||||
int
|
||||
|
|
@ -2528,9 +2529,9 @@ SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
return SMB2_close_flags(xid, tcon, persistent_fid, volatile_fid, 0);
|
||||
}
|
||||
|
||||
static int
|
||||
validate_iov(unsigned int offset, unsigned int buffer_length,
|
||||
struct kvec *iov, unsigned int min_buf_size)
|
||||
int
|
||||
smb2_validate_iov(unsigned int offset, unsigned int buffer_length,
|
||||
struct kvec *iov, unsigned int min_buf_size)
|
||||
{
|
||||
unsigned int smb_len = iov->iov_len;
|
||||
char *end_of_smb = smb_len + (char *)iov->iov_base;
|
||||
|
|
@ -2574,7 +2575,7 @@ validate_and_copy_iov(unsigned int offset, unsigned int buffer_length,
|
|||
if (!data)
|
||||
return -EINVAL;
|
||||
|
||||
rc = validate_iov(offset, buffer_length, iov, minbufsize);
|
||||
rc = smb2_validate_iov(offset, buffer_length, iov, minbufsize);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
|
|
@ -3646,9 +3647,9 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
goto qdir_exit;
|
||||
}
|
||||
|
||||
rc = validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
||||
le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
|
||||
info_buf_size);
|
||||
rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
||||
le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
|
||||
info_buf_size);
|
||||
if (rc)
|
||||
goto qdir_exit;
|
||||
|
||||
|
|
@ -3950,9 +3951,9 @@ SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
return rc;
|
||||
}
|
||||
|
||||
static void
|
||||
copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf,
|
||||
struct kstatfs *kst)
|
||||
void
|
||||
smb2_copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf,
|
||||
struct kstatfs *kst)
|
||||
{
|
||||
kst->f_bsize = le32_to_cpu(pfs_inf->BytesPerSector) *
|
||||
le32_to_cpu(pfs_inf->SectorsPerAllocationUnit);
|
||||
|
|
@ -4054,9 +4055,9 @@ SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
|
||||
info = (FILE_SYSTEM_POSIX_INFO *)(
|
||||
le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
|
||||
rc = validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
||||
le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
|
||||
sizeof(FILE_SYSTEM_POSIX_INFO));
|
||||
rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
||||
le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
|
||||
sizeof(FILE_SYSTEM_POSIX_INFO));
|
||||
if (!rc)
|
||||
copy_posix_fs_info_to_kstatfs(info, fsdata);
|
||||
|
||||
|
|
@ -4102,11 +4103,11 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
|
||||
info = (struct smb2_fs_full_size_info *)(
|
||||
le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
|
||||
rc = validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
||||
le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
|
||||
sizeof(struct smb2_fs_full_size_info));
|
||||
rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
||||
le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
|
||||
sizeof(struct smb2_fs_full_size_info));
|
||||
if (!rc)
|
||||
copy_fs_info_to_kstatfs(info, fsdata);
|
||||
smb2_copy_fs_info_to_kstatfs(info, fsdata);
|
||||
|
||||
qfsinf_exit:
|
||||
free_rsp_buf(resp_buftype, rsp_iov.iov_base);
|
||||
|
|
@ -4166,7 +4167,7 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
|
||||
rsp_len = le32_to_cpu(rsp->OutputBufferLength);
|
||||
offset = le16_to_cpu(rsp->OutputBufferOffset);
|
||||
rc = validate_iov(offset, rsp_len, &rsp_iov, min_len);
|
||||
rc = smb2_validate_iov(offset, rsp_len, &rsp_iov, min_len);
|
||||
if (rc)
|
||||
goto qfsattr_exit;
|
||||
|
||||
|
|
|
|||
|
|
@ -153,6 +153,8 @@ struct smb2_transform_hdr {
|
|||
*
|
||||
*/
|
||||
|
||||
#define COMPOUND_FID 0xFFFFFFFFFFFFFFFFULL
|
||||
|
||||
#define SMB2_ERROR_STRUCTURE_SIZE2 cpu_to_le16(9)
|
||||
|
||||
struct smb2_err_rsp {
|
||||
|
|
@ -1373,4 +1375,6 @@ struct smb2_file_eof_info { /* encoding of request for level 10 */
|
|||
__le64 EndOfFile; /* new end of file value */
|
||||
} __packed; /* level 20 Set */
|
||||
|
||||
extern char smb2_padding[7];
|
||||
|
||||
#endif /* _SMB2PDU_H */
|
||||
|
|
|
|||
|
|
@ -229,6 +229,12 @@ extern int smb3_validate_negotiate(const unsigned int, struct cifs_tcon *);
|
|||
|
||||
extern enum securityEnum smb2_select_sectype(struct TCP_Server_Info *,
|
||||
enum securityEnum);
|
||||
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);
|
||||
extern void smb2_copy_fs_info_to_kstatfs(
|
||||
struct smb2_fs_full_size_info *pfs_inf,
|
||||
struct kstatfs *kst);
|
||||
extern int smb311_crypto_shash_allocate(struct TCP_Server_Info *server);
|
||||
extern int smb311_update_preauth_hash(struct cifs_ses *ses,
|
||||
struct kvec *iov, int nvec);
|
||||
|
|
|
|||
Loading…
Reference in a new issue