diff options
| author |   Ronnie Sahlberg <lsahlber@redhat.com> | 2019-04-11 12:20:17 +1000 |
|---|---|---|
| committer |   Steve French <stfrench@microsoft.com> | 2019-05-07 23:24:55 -0500 |
| commit | efac779b1c69670ed1e5ab84123ccc2c14e082f0 (patch) | |
| tree | 01dd40bc81dd1dcc88e01d8a42764cb77cb1dfea /fs/cifs | |
| parent | cifs: remove superfluous inode_lock in cifs_{strict_}fsync (diff) | |
| download | linux-dev-efac779b1c69670ed1e5ab84123ccc2c14e082f0.tar.xz linux-dev-efac779b1c69670ed1e5ab84123ccc2c14e082f0.zip | |
cifs: Add support for FSCTL passthrough that write data to the server
Add support to pass a blob to the server in FSCTL passthrough.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/smb2ops.c | 17 | ||||
| -rw-r--r-- | fs/cifs/smbfsctl.h | 27 |
2 files changed, 42 insertions, 2 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index ab4737e3c31f..ed8c2ba9590b 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -1382,6 +1382,18 @@ smb2_ioctl_query_info(const unsigned int xid, oparms.fid = &fid; oparms.reconnect = false; + /* + * FSCTL codes encode the special access they need in the fsctl code. + */ + if (qi.flags & PASSTHRU_FSCTL) { + switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) { + case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS: + oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE; + ; + break; + } + } + rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path); if (rc) goto iqinf_exit; @@ -1399,8 +1411,9 @@ smb2_ioctl_query_info(const unsigned int xid, rc = SMB2_ioctl_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID, - qi.info_type, true, NULL, - 0, CIFSMaxBufSize); + qi.info_type, true, buffer, + qi.output_buffer_length, + CIFSMaxBufSize); } } else if (qi.flags == PASSTHRU_QUERY_INFO) { memset(&qi_iov, 0, sizeof(qi_iov)); diff --git a/fs/cifs/smbfsctl.h b/fs/cifs/smbfsctl.h index f996daeea271..9b3459b9a5ce 100644 --- a/fs/cifs/smbfsctl.h +++ b/fs/cifs/smbfsctl.h @@ -35,6 +35,33 @@ * below). Additional detail on less common ones can be found in MS-FSCC * section 2.3. */ + +/* + * FSCTL values are 32 bits and are constructed as + * <device 16bits> <access 2bits> <function 12bits> <method 2bits> + */ +/* Device */ +#define FSCTL_DEVICE_DFS (0x0006 << 16) +#define FSCTL_DEVICE_FILE_SYSTEM (0x0009 << 16) +#define FSCTL_DEVICE_NAMED_PIPE (0x0011 << 16) +#define FSCTL_DEVICE_NETWORK_FILE_SYSTEM (0x0014 << 16) +#define FSCTL_DEVICE_MASK 0xffff0000 +/* Access */ +#define FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS (0x00 << 14) +#define FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS (0x01 << 14) +#define FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS (0x02 << 14) +#define FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS (0x03 << 14) +#define FSCTL_DEVICE_ACCESS_MASK 0x0000c000 +/* Function */ +#define FSCTL_DEVICE_FUNCTION_MASK 0x00003ffc +/* Method */ +#define FSCTL_DEVICE_METHOD_BUFFERED 0x00 +#define FSCTL_DEVICE_METHOD_IN_DIRECT 0x01 +#define FSCTL_DEVICE_METHOD_OUT_DIRECT 0x02 +#define FSCTL_DEVICE_METHOD_NEITHER 0x03 +#define FSCTL_DEVICE_METHOD_MASK 0x00000003 + + #define FSCTL_DFS_GET_REFERRALS 0x00060194 #define FSCTL_DFS_GET_REFERRALS_EX 0x000601B0 #define FSCTL_REQUEST_OPLOCK_LEVEL_1 0x00090000 |