diff options
| -rw-r--r-- | fs/cifs/smb2glob.h | 1 | ||||
| -rw-r--r-- | fs/cifs/smb2inode.c | 34 | ||||
| -rw-r--r-- | fs/cifs/smb2ops.c | 1 | ||||
| -rw-r--r-- | fs/cifs/smb2pdu.c | 31 | ||||
| -rw-r--r-- | fs/cifs/smb2pdu.h | 9 | ||||
| -rw-r--r-- | fs/cifs/smb2proto.h | 6 |
6 files changed, 76 insertions, 6 deletions
diff --git a/fs/cifs/smb2glob.h b/fs/cifs/smb2glob.h index 8635574ea8b6..21555d8744fd 100644 --- a/fs/cifs/smb2glob.h +++ b/fs/cifs/smb2glob.h @@ -40,6 +40,7 @@ #define SMB2_OP_MKDIR 5 #define SMB2_OP_RENAME 6 #define SMB2_OP_DELETE 7 +#define SMB2_OP_HARDLINK 8 /* Used when constructing chained read requests. */ #define CHAINED_REQUEST 1 diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c index a6952bafe331..1921c9c87ccd 100644 --- a/fs/cifs/smb2inode.c +++ b/fs/cifs/smb2inode.c @@ -78,6 +78,10 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon, tmprc = SMB2_rename(xid, tcon, persistent_fid, volatile_fid, (__le16 *)data); break; + case SMB2_OP_HARDLINK: + tmprc = SMB2_set_hardlink(xid, tcon, persistent_fid, + volatile_fid, (__le16 *)data); + break; default: cERROR(1, "Invalid command"); break; @@ -175,10 +179,10 @@ smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, SMB2_OP_DELETE); } -int -smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon, - const char *from_name, const char *to_name, - struct cifs_sb_info *cifs_sb) +static int +smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, + const char *from_name, const char *to_name, + struct cifs_sb_info *cifs_sb, __u32 access, int command) { __le16 *smb2_to_name = NULL; int rc; @@ -189,9 +193,27 @@ smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon, goto smb2_rename_path; } - rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, DELETE, - FILE_OPEN, 0, 0, smb2_to_name, SMB2_OP_RENAME); + rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, access, + FILE_OPEN, 0, 0, smb2_to_name, command); smb2_rename_path: kfree(smb2_to_name); return rc; } + +int +smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon, + const char *from_name, const char *to_name, + struct cifs_sb_info *cifs_sb) +{ + return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, + DELETE, SMB2_OP_RENAME); +} + +int +smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon, + const char *from_name, const char *to_name, + struct cifs_sb_info *cifs_sb) +{ + return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, + FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK); +} diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 5aaccb0f3aae..75693e983e76 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -452,6 +452,7 @@ struct smb_version_operations smb21_operations = { .rmdir = smb2_rmdir, .unlink = smb2_unlink, .rename = smb2_rename_path, + .create_hardlink = smb2_create_hardlink, .open = smb2_open_file, .set_fid = smb2_set_fid, .close = smb2_close_file, diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 1dc11ce7934e..a684c4ab42d6 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -1709,3 +1709,34 @@ SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon, kfree(data); return rc; } + +int +SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_fid, u64 volatile_fid, __le16 *target_file) +{ + struct smb2_file_link_info info; + void **data; + unsigned int size[2]; + int rc; + int len = (2 * UniStrnlen((wchar_t *)target_file, PATH_MAX)); + + data = kmalloc(sizeof(void *) * 2, GFP_KERNEL); + if (!data) + return -ENOMEM; + + info.ReplaceIfExists = 0; /* 1 = replace existing link with new */ + /* 0 = fail if link already exists */ + info.RootDirectory = 0; /* MBZ for network ops (why does spec say?) */ + info.FileNameLength = cpu_to_le32(len); + + data[0] = &info; + size[0] = sizeof(struct smb2_file_link_info); + + data[1] = target_file; + size[1] = len + 2 /* null */; + + rc = send_set_info(xid, tcon, persistent_fid, volatile_fid, + FILE_LINK_INFORMATION, 2, data, size); + kfree(data); + return rc; +} diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index b03ca37d0d58..0f3c4828cd00 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -653,6 +653,15 @@ struct smb2_file_rename_info { /* encoding of request for level 10 */ char FileName[0]; /* New name to be assigned */ } __packed; /* level 10 Set */ +struct smb2_file_link_info { /* encoding of request for level 11 */ + __u8 ReplaceIfExists; /* 1 = replace existing link with new */ + /* 0 = fail if link already exists */ + __u8 Reserved[7]; + __u64 RootDirectory; /* MBZ for network operations (why says spec?) */ + __le32 FileNameLength; + char FileName[0]; /* Name to be assigned to new link */ +} __packed; /* level 11 Set */ + /* * This level 18, although with struct with same name is different from cifs * level 0x107. Level 0x107 has an extra u64 between AccessFlags and diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index b43036e8ad2a..99f6945c8643 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -68,6 +68,9 @@ extern int smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, extern int smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon, const char *from_name, const char *to_name, struct cifs_sb_info *cifs_sb); +extern int smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon, + const char *from_name, const char *to_name, + struct cifs_sb_info *cifs_sb); extern int smb2_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *full_path, int disposition, @@ -112,5 +115,8 @@ extern int SMB2_echo(struct TCP_Server_Info *server); extern int SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid, __le16 *target_file); +extern int SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_fid, u64 volatile_fid, + __le16 *target_file); #endif /* _SMB2PROTO_H */ |