UNIX Extensions: Difference between revisions
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== Posix Open == |
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The server specifies it can serve these by returning CIFS_UNIX_POSIX_PATH_OPERATIONS_CAP |
The server specifies it can serve these by returning CIFS_UNIX_POSIX_PATH_OPERATIONS_CAP |
Revision as of 20:17, 27 February 2007
See http://samba.org/samba/CIFS_POSIX_extensions.html
All Unix extensions are TRANSACT2 commands in the range from 0x200 to 0x2FF (inclusive).
Negotiating Capabilities
Capability | Value |
---|---|
CIFS_UNIX_FCNLT_LOCKS_CAP | 0x01 |
CIFS_UNIX_POSIX_ACLS_CAP | 0x02 |
CIFS_UNIX_XATTR_CAP | 0x04 |
CIFS_UNIX_EXATTR_CAP | 0x08 |
CIFS_UNIX_POSIX_PATH_OPERATIONS_CAP | 0x20 |
Posix Open
The server specifies it can serve these by returning CIFS_UNIX_POSIX_PATH_OPERATIONS_CAP in the reply to a trans2 qfsinfo (TRANSACT2_QFSINFO 0x03) info level SMB_QUERY_CIFS_UNIX_INFO (0x200) call. All values are little endian.
For open, call TRANSACT2_SETPATHINFO (0x06) call info level :
SMB_POSIX_PATH_OPEN 0x209
The request data block should be 14 bytes consisting of the following :
Size | Offset | Value |
---|---|---|
4 bytes | 0 | Flags field (same as smb_ntcreate_flags in SMBNTCreateX to request oplocks) |
4 bytes | 4 | POSIX open flags (see below) |
4 bytes | 8 | POSIX mode_t (see below) |
2 bytes | 12 | Reply info level requested (see below) |
Encodings are as follows :
POSIX open flags | Value |
---|---|
SMB_O_RDONLY | 0x1 |
SMB_O_WRONLY | 0x2 |
SMB_O_RDWR | 0x4 |
SMB_O_CREAT | 0x10 |
SMB_O_EXCL | 0x20 |
SMB_O_TRUNC | 0x40 |
SMB_O_APPEND | 0x80 |
SMB_O_SYNC | 0x100 |
SMB_O_DIRECTORY | 0x200 |
SMB_O_NOFOLLOW | 0x400 |
SMB_O_DIRECT | 0x800 |