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CIFS: Add SMB2 support for set_file_size 

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky 2012-09-18 16:20:32 -07:00 committed by Steve French
parent d143341815
commit c839ff244b
6 changed files with 60 additions and 3 deletions
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1
fs/cifs/smb2glob.h
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@ -41,6 +41,7 @@
#define SMB2_OP_RENAME 6
#define SMB2_OP_DELETE 7
#define SMB2_OP_HARDLINK 8
#define SMB2_OP_SET_EOF 9
/* Used when constructing chained read requests. */
#define CHAINED_REQUEST 1

15
fs/cifs/smb2inode.c
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@ -82,6 +82,10 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
tmprc = SMB2_set_hardlink(xid, tcon, persistent_fid,
volatile_fid, (__le16 *)data);
break;
case SMB2_OP_SET_EOF:
tmprc = SMB2_set_eof(xid, tcon, persistent_fid, volatile_fid,
current->tgid, (__le64 *)data);
break;
default:
cERROR(1, "Invalid command");
break;
@ -217,3 +221,14 @@ smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK);
}
int
smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
const char *full_path, __u64 size,
struct cifs_sb_info *cifs_sb, bool set_alloc)
{
__le64 eof = cpu_to_le64(size);
return smb2_open_op_close(xid, tcon, cifs_sb, full_path,
FILE_WRITE_DATA, FILE_OPEN, 0, 0, &eof,
SMB2_OP_SET_EOF);
}

11
fs/cifs/smb2ops.c
View File

@ -415,6 +415,15 @@ smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
return SMB2_write(xid, parms, written, iov, nr_segs);
}
static int
smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
{
__le64 eof = cpu_to_le64(size);
return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid, cfile->pid, &eof);
}
struct smb_version_operations smb21_operations = {
.setup_request = smb2_setup_request,
.setup_async_request = smb2_setup_async_request,
@ -446,6 +455,8 @@ struct smb_version_operations smb21_operations = {
.query_path_info = smb2_query_path_info,
.get_srv_inum = smb2_get_srv_inum,
.query_file_info = smb2_query_file_info,
.set_path_size = smb2_set_path_size,
.set_file_size = smb2_set_file_size,
.build_path_to_root = smb2_build_path_to_root,
.mkdir = smb2_mkdir,
.mkdir_setinfo = smb2_mkdir_setinfo,

26
fs/cifs/smb2pdu.c
View File

@ -1605,7 +1605,7 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
static int
send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, int info_class,
u64 persistent_fid, u64 volatile_fid, u32 pid, int info_class,
unsigned int num, void **data, unsigned int *size)
{
struct smb2_set_info_req *req;
@ -1635,6 +1635,8 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
return rc;
}
req->hdr.ProcessId = cpu_to_le32(pid);
req->InfoType = SMB2_O_INFO_FILE;
req->FileInfoClass = info_class;
req->PersistentFileId = persistent_fid;
@ -1705,7 +1707,8 @@ SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
size[1] = len + 2 /* null */;
rc = send_set_info(xid, tcon, persistent_fid, volatile_fid,
FILE_RENAME_INFORMATION, 2, data, size);
current->tgid, FILE_RENAME_INFORMATION, 2, data,
size);
kfree(data);
return rc;
}
@ -1736,7 +1739,24 @@ SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
size[1] = len + 2 /* null */;
rc = send_set_info(xid, tcon, persistent_fid, volatile_fid,
FILE_LINK_INFORMATION, 2, data, size);
current->tgid, FILE_LINK_INFORMATION, 2, data, size);
kfree(data);
return rc;
}
int
SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
u64 volatile_fid, u32 pid, __le64 *eof)
{
struct smb2_file_eof_info info;
void *data;
unsigned int size;
info.EndOfFile = *eof;
data = &info;
size = sizeof(struct smb2_file_eof_info);
return send_set_info(xid, tcon, persistent_fid, volatile_fid, pid,
FILE_END_OF_FILE_INFORMATION, 1, &data, &size);
}

4
fs/cifs/smb2pdu.h
View File

@ -690,4 +690,8 @@ struct smb2_file_all_info { /* data block encoding of response to level 18 */
char FileName[1];
} __packed; /* level 18 Query */
struct smb2_file_eof_info { /* encoding of request for level 10 */
__le64 EndOfFile; /* new end of file value */
} __packed; /* level 20 Set */
#endif /* _SMB2PDU_H */

6
fs/cifs/smb2proto.h
View File

@ -56,6 +56,9 @@ extern int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const char *full_path, FILE_ALL_INFO *data,
bool *adjust_tz);
extern int smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
const char *full_path, __u64 size,
struct cifs_sb_info *cifs_sb, bool set_alloc);
extern int smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon,
const char *name, struct cifs_sb_info *cifs_sb);
extern void smb2_mkdir_setinfo(struct inode *inode, const char *full_path,
@ -118,5 +121,8 @@ extern int SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
extern int SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid,
__le16 *target_file);
extern int SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, u32 pid,
__le64 *eof);
#endif /* _SMB2PROTO_H */