and convert statfs to use it.
Signed-off-by: Ronnie Sahlberg <lsahlber@xxxxxxxxxx>
---
fs/cifs/smb2ops.c | 78 ++++++++++++++++++++++++++++++++++++++-----------------
1 file changed, 54 insertions(+), 24 deletions(-)
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 54bedd751e66..5d0d9d618cfa 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1830,25 +1830,28 @@ smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst)
shdr->NextCommand = cpu_to_le32(len);
}
+/*
+ * Passes the query info response back to the caller on success.
+ * Caller need to free this with free_rsp_buf().
+ */
static int
-smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
- struct kstatfs *buf)
+smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
+ __le16 *utf16_path, u32 desired_access,
+ u32 class, u32 type, u32 output_len,
+ struct kvec *rsp, int *buftype)
{
- struct smb2_query_info_rsp *rsp;
- struct smb2_fs_full_size_info *info = NULL;
+ struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = ses->server;
+ int flags = 0;
struct smb_rqst rqst[3];
int resp_buftype[3];
struct kvec rsp_iov[3];
struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
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))
@@ -1863,15 +1866,15 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
oparms.tcon = tcon;
- oparms.desired_access = FILE_READ_ATTRIBUTES;
+ oparms.desired_access = desired_access;
oparms.disposition = FILE_OPEN;
oparms.create_options = 0;
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &srch_path);
+ rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
if (rc)
- goto qfs_exit;
+ goto qic_exit;
smb2_set_next_command(server, &rqst[0]);
memset(&qi_iov, 0, sizeof(qi_iov));
@@ -1879,12 +1882,11 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
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), 0,
+ class, type, 0,
+ output_len, 0,
NULL);
if (rc)
- goto qfs_exit;
+ goto qic_exit;
smb2_set_next_command(server, &rqst[1]);
smb2_set_related(&rqst[1]);
@@ -1894,32 +1896,60 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
if (rc)
- goto qfs_exit;
+ goto qic_exit;
smb2_set_related(&rqst[2]);
rc = compound_send_recv(xid, ses, flags, 3, rqst,
resp_buftype, rsp_iov);
if (rc)
+ goto qic_exit;
+
+ *rsp = rsp_iov[1];
+ *buftype = resp_buftype[1];
+
+ qic_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[2], rsp_iov[2].iov_base);
+ return rc;
+}
+
+static int
+smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
+ struct kstatfs *buf)
+{
+ struct smb2_query_info_rsp *rsp;
+ struct smb2_fs_full_size_info *info = NULL;
+ __le16 utf16_path = 0; /* Null - open root of share */
+ struct kvec rsp_iov = {NULL, 0};
+ int buftype = CIFS_NO_BUFFER;
+ int rc;
+
+
+ rc = smb2_query_info_compound(xid, tcon, &utf16_path,
+ FILE_READ_ATTRIBUTES,
+ FS_FULL_SIZE_INFORMATION,
+ SMB2_O_INFO_FILESYSTEM,
+ sizeof(struct smb2_fs_full_size_info),
+ &rsp_iov, &buftype);
+ if (rc)
goto qfs_exit;
- rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
+ rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
buf->f_type = SMB2_MAGIC_NUMBER;
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],
+ &rsp_iov,
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);
+ free_rsp_buf(buftype, rsp_iov.iov_base);
return rc;
}
--
2.13.6
