diff options
Diffstat (limited to 'fs/cifs/smb2inode.c')
| -rw-r--r-- | fs/cifs/smb2inode.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c new file mode 100644 index 00000000000..2aa5cb08c52 --- /dev/null +++ b/fs/cifs/smb2inode.c @@ -0,0 +1,163 @@ +/* + * fs/cifs/smb2inode.c + * + * Copyright (C) International Business Machines Corp., 2002, 2011 + * Etersoft, 2012 + * Author(s): Pavel Shilovsky (pshilovsky@samba.org), + * Steve French (sfrench@us.ibm.com) + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published + * by the Free Software Foundation; either version 2.1 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <linux/fs.h> +#include <linux/stat.h> +#include <linux/slab.h> +#include <linux/pagemap.h> +#include <asm/div64.h> +#include "cifsfs.h" +#include "cifspdu.h" +#include "cifsglob.h" +#include "cifsproto.h" +#include "cifs_debug.h" +#include "cifs_fs_sb.h" +#include "cifs_unicode.h" +#include "fscache.h" +#include "smb2glob.h" +#include "smb2pdu.h" +#include "smb2proto.h" + +static int +smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const char *full_path, + __u32 desired_access, __u32 create_disposition, + __u32 file_attributes, __u32 create_options, + void *data, int command) +{ + int rc, tmprc = 0; + u64 persistent_fid, volatile_fid; + __le16 *utf16_path; + + utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); + if (!utf16_path) + return -ENOMEM; + + rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid, + desired_access, create_disposition, file_attributes, + create_options); + if (rc) { + kfree(utf16_path); + return rc; + } + + switch (command) { + case SMB2_OP_DELETE: + break; + case SMB2_OP_QUERY_INFO: + tmprc = SMB2_query_info(xid, tcon, persistent_fid, + volatile_fid, + (struct smb2_file_all_info *)data); + break; + case SMB2_OP_MKDIR: + /* + * Directories are created through parameters in the + * SMB2_open() call. + */ + break; + default: + cERROR(1, "Invalid command"); + break; + } + + rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid); + if (tmprc) + rc = tmprc; + kfree(utf16_path); + return rc; +} + +static void +move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src) +{ + memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src); + dst->CurrentByteOffset = src->CurrentByteOffset; + dst->Mode = src->Mode; + dst->AlignmentRequirement = src->AlignmentRequirement; + dst->IndexNumber1 = 0; /* we don't use it */ +} + +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) +{ + int rc; + struct smb2_file_all_info *smb2_data; + + *adjust_tz = false; + + smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2, + GFP_KERNEL); + if (smb2_data == NULL) + return -ENOMEM; + + rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path, + FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, + smb2_data, SMB2_OP_QUERY_INFO); + if (rc) + goto out; + + move_smb2_info_to_cifs(data, smb2_data); +out: + kfree(smb2_data); + return rc; +} + +int +smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, + struct cifs_sb_info *cifs_sb) +{ + return smb2_open_op_close(xid, tcon, cifs_sb, name, + FILE_WRITE_ATTRIBUTES, FILE_CREATE, 0, + CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR); +} + +void +smb2_mkdir_setinfo(struct inode *inode, const char *name, + struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, + const unsigned int xid) +{ + FILE_BASIC_INFO data; + struct cifsInodeInfo *cifs_i; + u32 dosattrs; + int tmprc; + + memset(&data, 0, sizeof(data)); + cifs_i = CIFS_I(inode); + dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; + data.Attributes = cpu_to_le32(dosattrs); + tmprc = smb2_open_op_close(xid, tcon, cifs_sb, name, + FILE_WRITE_ATTRIBUTES, FILE_CREATE, 0, + CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO); + if (tmprc == 0) + cifs_i->cifsAttrs = dosattrs; +} + +int +smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, + struct cifs_sb_info *cifs_sb) +{ + return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, + 0, CREATE_NOT_FILE | CREATE_DELETE_ON_CLOSE, + NULL, SMB2_OP_DELETE); +} |