diff options
| -rw-r--r-- | fs/cifs/inode.c | 306 |
1 files changed, 139 insertions, 167 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 511c5261679..8dbc7c90309 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -665,6 +665,101 @@ struct inode *cifs_iget(struct super_block *sb, unsigned long ino) return inode; } +static int +cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid, + char *full_path, __u32 dosattr) +{ + int rc; + int oplock = 0; + __u16 netfid; + __u32 netpid; + bool set_time = false; + struct cifsFileInfo *open_file; + struct cifsInodeInfo *cifsInode = CIFS_I(inode); + struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); + struct cifsTconInfo *pTcon = cifs_sb->tcon; + FILE_BASIC_INFO info_buf; + + if (attrs->ia_valid & ATTR_ATIME) { + set_time = true; + info_buf.LastAccessTime = + cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); + } else + info_buf.LastAccessTime = 0; + + if (attrs->ia_valid & ATTR_MTIME) { + set_time = true; + info_buf.LastWriteTime = + cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); + } else + info_buf.LastWriteTime = 0; + + /* + * Samba throws this field away, but windows may actually use it. + * Do not set ctime unless other time stamps are changed explicitly + * (i.e. by utimes()) since we would then have a mix of client and + * server times. + */ + if (set_time && (attrs->ia_valid & ATTR_CTIME)) { + cFYI(1, ("CIFS - CTIME changed")); + info_buf.ChangeTime = + cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); + } else + info_buf.ChangeTime = 0; + + info_buf.CreationTime = 0; /* don't change */ + info_buf.Attributes = cpu_to_le32(dosattr); + + /* + * If the file is already open for write, just use that fileid + */ + open_file = find_writable_file(cifsInode); + if (open_file) { + netfid = open_file->netfid; + netpid = open_file->pid; + goto set_via_filehandle; + } + + /* + * NT4 apparently returns success on this call, but it doesn't + * really work. + */ + if (!(pTcon->ses->flags & CIFS_SES_NT4)) { + rc = CIFSSMBSetPathInfo(xid, pTcon, full_path, + &info_buf, cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); + if (rc != -EOPNOTSUPP && rc != -EINVAL) + goto out; + } + + cFYI(1, ("calling SetFileInfo since SetPathInfo for " + "times not supported by this server")); + rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, + SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, + CREATE_NOT_DIR, &netfid, &oplock, + NULL, cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); + + if (rc != 0) { + if (rc == -EIO) + rc = -EINVAL; + goto out; + } + + netpid = current->tgid; + +set_via_filehandle: + rc = CIFSSMBSetFileInfo(xid, pTcon, &info_buf, netfid, netpid); + if (open_file == NULL) + CIFSSMBClose(xid, pTcon, netfid); + else + atomic_dec(&open_file->wrtPending); +out: + return rc; +} + int cifs_unlink(struct inode *dir, struct dentry *dentry) { int rc = 0; @@ -675,7 +770,8 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry) struct super_block *sb = dir->i_sb; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); struct cifsTconInfo *tcon = cifs_sb->tcon; - FILE_BASIC_INFO *pinfo_buf; + struct iattr *attrs; + __u32 dosattr; cFYI(1, ("cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry)); @@ -728,84 +824,55 @@ psx_del_no_retry: } } else if (rc == -EACCES) { /* try only if r/o attribute set in local lookup data? */ - pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL); - if (pinfo_buf) { - /* ATTRS set to normal clears r/o bit */ - pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL); - if (!(tcon->ses->flags & CIFS_SES_NT4)) - rc = CIFSSMBSetPathInfo(xid, tcon, full_path, - pinfo_buf, - cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - else - rc = -EOPNOTSUPP; - - if (rc == -EOPNOTSUPP) { - int oplock = 0; - __u16 netfid; - /* rc = CIFSSMBSetAttrLegacy(xid, tcon, - full_path, - (__u16)ATTR_NORMAL, - cifs_sb->local_nls); - For some strange reason it seems that NT4 eats the - old setattr call without actually setting the - attributes so on to the third attempted workaround - */ - - /* BB could scan to see if we already have it open - and pass in pid of opener to function */ - rc = CIFSSMBOpen(xid, tcon, full_path, - FILE_OPEN, SYNCHRONIZE | - FILE_WRITE_ATTRIBUTES, 0, - &netfid, &oplock, NULL, - cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - if (rc == 0) { - rc = CIFSSMBSetFileInfo(xid, tcon, - pinfo_buf, - netfid, - current->tgid); - CIFSSMBClose(xid, tcon, netfid); - } - } - kfree(pinfo_buf); + attrs = kzalloc(sizeof(*attrs), GFP_KERNEL); + if (attrs == NULL) { + rc = -ENOMEM; + goto out_reval; } + + /* try to reset dos attributes */ + cifsInode = CIFS_I(inode); + dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY; + if (dosattr == 0) + dosattr |= ATTR_NORMAL; + dosattr |= ATTR_HIDDEN; + + rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); + kfree(attrs); + if (rc != 0) + goto out_reval; + rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc == 0) { - rc = CIFSSMBDelFile(xid, tcon, full_path, - cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - if (!rc) { + if (inode) + drop_nlink(inode); + } else if (rc == -ETXTBSY) { + int oplock = 0; + __u16 netfid; + + rc = CIFSSMBOpen(xid, tcon, full_path, + FILE_OPEN, DELETE, + CREATE_NOT_DIR | + CREATE_DELETE_ON_CLOSE, + &netfid, &oplock, NULL, + cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); + if (rc == 0) { + CIFSSMBRenameOpenFile(xid, tcon, + netfid, NULL, + cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); + CIFSSMBClose(xid, tcon, netfid); if (inode) drop_nlink(inode); - } else if (rc == -ETXTBSY) { - int oplock = 0; - __u16 netfid; - - rc = CIFSSMBOpen(xid, tcon, full_path, - FILE_OPEN, DELETE, - CREATE_NOT_DIR | - CREATE_DELETE_ON_CLOSE, - &netfid, &oplock, NULL, - cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - if (rc == 0) { - CIFSSMBRenameOpenFile(xid, tcon, - netfid, NULL, - cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - CIFSSMBClose(xid, tcon, netfid); - if (inode) - drop_nlink(inode); - } - /* BB if rc = -ETXTBUSY goto the rename logic BB */ } + /* BB if rc = -ETXTBUSY goto the rename logic BB */ } } +out_reval: if (inode) { cifsInode = CIFS_I(inode); cifsInode->time = 0; /* will force revalidate to get info @@ -1499,101 +1566,6 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs, } static int -cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid, - char *full_path, __u32 dosattr) -{ - int rc; - int oplock = 0; - __u16 netfid; - __u32 netpid; - bool set_time = false; - struct cifsFileInfo *open_file; - struct cifsInodeInfo *cifsInode = CIFS_I(inode); - struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); - struct cifsTconInfo *pTcon = cifs_sb->tcon; - FILE_BASIC_INFO info_buf; - - if (attrs->ia_valid & ATTR_ATIME) { - set_time = true; - info_buf.LastAccessTime = - cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); - } else - info_buf.LastAccessTime = 0; - - if (attrs->ia_valid & ATTR_MTIME) { - set_time = true; - info_buf.LastWriteTime = - cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); - } else - info_buf.LastWriteTime = 0; - - /* - * Samba throws this field away, but windows may actually use it. - * Do not set ctime unless other time stamps are changed explicitly - * (i.e. by utimes()) since we would then have a mix of client and - * server times. - */ - if (set_time && (attrs->ia_valid & ATTR_CTIME)) { - cFYI(1, ("CIFS - CTIME changed")); - info_buf.ChangeTime = - cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); - } else - info_buf.ChangeTime = 0; - - info_buf.CreationTime = 0; /* don't change */ - info_buf.Attributes = cpu_to_le32(dosattr); - - /* - * If the file is already open for write, just use that fileid - */ - open_file = find_writable_file(cifsInode); - if (open_file) { - netfid = open_file->netfid; - netpid = open_file->pid; - goto set_via_filehandle; - } - - /* - * NT4 apparently returns success on this call, but it doesn't - * really work. - */ - if (!(pTcon->ses->flags & CIFS_SES_NT4)) { - rc = CIFSSMBSetPathInfo(xid, pTcon, full_path, - &info_buf, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - if (rc != -EOPNOTSUPP && rc != -EINVAL) - goto out; - } - - cFYI(1, ("calling SetFileInfo since SetPathInfo for " - "times not supported by this server")); - rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, - SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, - CREATE_NOT_DIR, &netfid, &oplock, - NULL, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - - if (rc != 0) { - if (rc == -EIO) - rc = -EINVAL; - goto out; - } - - netpid = current->tgid; - -set_via_filehandle: - rc = CIFSSMBSetFileInfo(xid, pTcon, &info_buf, netfid, netpid); - if (open_file == NULL) - CIFSSMBClose(xid, pTcon, netfid); - else - atomic_dec(&open_file->wrtPending); -out: - return rc; -} - -static int cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs) { int rc; |