From c839ff244ba2d54d0933596e29a4b03e3c846a9a Mon Sep 17 00:00:00 2001 From: Pavel Shilovsky Date: Tue, 18 Sep 2012 16:20:32 -0700 Subject: [PATCH] CIFS: Add SMB2 support for set_file_size Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French --- fs/cifs/smb2glob.h | 1 + fs/cifs/smb2inode.c | 15 +++++++++++++++ fs/cifs/smb2ops.c | 11 +++++++++++ fs/cifs/smb2pdu.c | 26 +++++++++++++++++++++++--- fs/cifs/smb2pdu.h | 4 ++++ fs/cifs/smb2proto.h | 6 ++++++ 6 files changed, 60 insertions(+), 3 deletions(-) diff --git a/fs/cifs/smb2glob.h b/fs/cifs/smb2glob.h index 21555d8744fd..05d429b1c37e 100644 --- a/fs/cifs/smb2glob.h +++ b/fs/cifs/smb2glob.h @@ -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 diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c index 1921c9c87ccd..290583092293 100644 --- a/fs/cifs/smb2inode.c +++ b/fs/cifs/smb2inode.c @@ -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); +} diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 75693e983e76..e0daf3a4dcc2 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -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, diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index a684c4ab42d6..74a8381400b1 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -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); +} diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index 0f3c4828cd00..d775941f552a 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -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 */ diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index 99f6945c8643..3d4866279530 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -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 */ -- 2.34.1