/*
* fs/cifs/inode.c
*
- * Copyright (C) International Business Machines Corp., 2002,2007
+ * Copyright (C) International Business Machines Corp., 2002,2008
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
inode = *pinode;
cifsInfo = CIFS_I(inode);
cifsInfo->cifsAttrs = attr;
+ cifsInfo->delete_pending = pfindData->DeletePending ? true : false;
cFYI(1, ("Old time %ld", cifsInfo->time));
cifsInfo->time = jiffies;
cFYI(1, ("New time %ld", cifsInfo->time));
if ((inode->i_mode & S_IWUGO) == 0 &&
(attr & ATTR_READONLY) == 0)
inode->i_mode |= (S_IWUGO & default_mode);
- inode->i_mode &= ~S_IFMT;
+
+ inode->i_mode &= ~S_IFMT;
}
/* clear write bits if ATTR_READONLY is set */
if (attr & ATTR_READONLY)
.lookup = cifs_lookup,
};
+char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
+{
+ int pplen = cifs_sb->prepathlen;
+ int dfsplen;
+ char *full_path = NULL;
+
+ /* if no prefix path, simply set path to the root of share to "" */
+ if (pplen == 0) {
+ full_path = kmalloc(1, GFP_KERNEL);
+ if (full_path)
+ full_path[0] = 0;
+ return full_path;
+ }
+
+ if (cifs_sb->tcon && (cifs_sb->tcon->Flags & SMB_SHARE_IS_IN_DFS))
+ dfsplen = strnlen(cifs_sb->tcon->treeName, MAX_TREE_SIZE + 1);
+ else
+ dfsplen = 0;
+
+ full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
+ if (full_path == NULL)
+ return full_path;
+
+ if (dfsplen) {
+ strncpy(full_path, cifs_sb->tcon->treeName, dfsplen);
+ /* switch slash direction in prepath depending on whether
+ * windows or posix style path names
+ */
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
+ int i;
+ for (i = 0; i < dfsplen; i++) {
+ if (full_path[i] == '\\')
+ full_path[i] = '/';
+ }
+ }
+ }
+ strncpy(full_path + dfsplen, cifs_sb->prepath, pplen);
+ full_path[dfsplen + pplen] = 0; /* add trailing null */
+ return full_path;
+}
+
/* gets root inode */
struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
{
struct cifs_sb_info *cifs_sb;
struct inode *inode;
long rc;
+ char *full_path;
inode = iget_locked(sb, ino);
if (!inode)
return inode;
cifs_sb = CIFS_SB(inode->i_sb);
- xid = GetXid();
+ full_path = cifs_build_path_to_root(cifs_sb);
+ if (full_path == NULL)
+ return ERR_PTR(-ENOMEM);
+ xid = GetXid();
if (cifs_sb->tcon->unix_ext)
- rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
+ rc = cifs_get_inode_info_unix(&inode, full_path, inode->i_sb,
+ xid);
else
- rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid,
- NULL);
+ rc = cifs_get_inode_info(&inode, full_path, NULL, inode->i_sb,
+ xid, NULL);
if (rc && cifs_sb->tcon->ipc) {
cFYI(1, ("ipc connection - fake read inode"));
inode->i_mode |= S_IFDIR;
inode->i_fop = &simple_dir_operations;
inode->i_uid = cifs_sb->mnt_uid;
inode->i_gid = cifs_sb->mnt_gid;
+ } else if (rc) {
+ kfree(full_path);
_FreeXid(xid);
iget_failed(inode);
return ERR_PTR(rc);
unlock_new_inode(inode);
+ kfree(full_path);
/* can not call macro FreeXid here since in a void func
* TODO: This is no longer true
*/
return inode;
}
-int cifs_unlink(struct inode *inode, struct dentry *direntry)
+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 == 0) {
+ cifsInode->cifsAttrs = dosattr;
+ goto out;
+ } else 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 (!rc)
+ cifsInode->cifsAttrs = dosattr;
+
+ if (open_file == NULL)
+ CIFSSMBClose(xid, pTcon, netfid);
+ else
+ atomic_dec(&open_file->wrtPending);
+out:
+ return rc;
+}
+
+/*
+ * open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
+ * and rename it to a random name that hopefully won't conflict with
+ * anything else.
+ */
+static int
+cifs_rename_pending_delete(char *full_path, struct dentry *dentry, int xid)
+{
+ int oplock = 0;
+ int rc;
+ __u16 netfid;
+ struct inode *inode = dentry->d_inode;
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *tcon = cifs_sb->tcon;
+ __u32 dosattr, origattr;
+ FILE_BASIC_INFO *info_buf = NULL;
+
+ rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
+ DELETE|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)
+ goto out;
+
+ origattr = cifsInode->cifsAttrs;
+ if (origattr == 0)
+ origattr |= ATTR_NORMAL;
+
+ dosattr = origattr & ~ATTR_READONLY;
+ if (dosattr == 0)
+ dosattr |= ATTR_NORMAL;
+ dosattr |= ATTR_HIDDEN;
+
+ /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
+ if (dosattr != origattr) {
+ info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
+ if (info_buf == NULL) {
+ rc = -ENOMEM;
+ goto out_close;
+ }
+ info_buf->Attributes = cpu_to_le32(dosattr);
+ rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
+ current->tgid);
+ /* although we would like to mark the file hidden
+ if that fails we will still try to rename it */
+ if (rc != 0)
+ cifsInode->cifsAttrs = dosattr;
+ else
+ dosattr = origattr; /* since not able to change them */
+ }
+
+ /* rename the file */
+ rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc != 0) {
+ rc = -ETXTBSY;
+ goto undo_setattr;
+ }
+
+ /* try to set DELETE_ON_CLOSE */
+ if (!cifsInode->delete_pending) {
+ rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid,
+ current->tgid);
+ /*
+ * some samba versions return -ENOENT when we try to set the
+ * file disposition here. Likely a samba bug, but work around
+ * it for now. This means that some cifsXXX files may hang
+ * around after they shouldn't.
+ *
+ * BB: remove this hack after more servers have the fix
+ */
+ if (rc == -ENOENT)
+ rc = 0;
+ else if (rc != 0) {
+ rc = -ETXTBSY;
+ goto undo_rename;
+ }
+ cifsInode->delete_pending = true;
+ }
+
+out_close:
+ CIFSSMBClose(xid, tcon, netfid);
+out:
+ kfree(info_buf);
+ return rc;
+
+ /*
+ * reset everything back to the original state. Don't bother
+ * dealing with errors here since we can't do anything about
+ * them anyway.
+ */
+undo_rename:
+ CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+undo_setattr:
+ if (dosattr != origattr) {
+ info_buf->Attributes = cpu_to_le32(origattr);
+ if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
+ current->tgid))
+ cifsInode->cifsAttrs = origattr;
+ }
+
+ goto out_close;
+}
+
+int cifs_unlink(struct inode *dir, struct dentry *dentry)
{
int rc = 0;
int xid;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
char *full_path = NULL;
- struct cifsInodeInfo *cifsInode;
- FILE_BASIC_INFO *pinfo_buf;
+ struct inode *inode = dentry->d_inode;
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+ struct super_block *sb = dir->i_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ struct cifsTconInfo *tcon = cifs_sb->tcon;
+ struct iattr *attrs = NULL;
+ __u32 dosattr = 0, origattr = 0;
- cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
+ cFYI(1, ("cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry));
xid = GetXid();
- if (inode)
- cifs_sb = CIFS_SB(inode->i_sb);
- else
- cifs_sb = CIFS_SB(direntry->d_sb);
- pTcon = cifs_sb->tcon;
-
- /* Unlink can be called from rename so we can not grab the sem here
- since we deadlock otherwise */
-/* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
- full_path = build_path_from_dentry(direntry);
-/* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
+ /* Unlink can be called from rename so we can not take the
+ * sb->s_vfs_rename_mutex here */
+ full_path = build_path_from_dentry(dentry);
if (full_path == NULL) {
FreeXid(xid);
return -ENOMEM;
}
- if ((pTcon->ses->capabilities & CAP_UNIX) &&
+ if ((tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
- le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
- rc = CIFSPOSIXDelFile(xid, pTcon, full_path,
+ le64_to_cpu(tcon->fsUnixInfo.Capability))) {
+ rc = CIFSPOSIXDelFile(xid, tcon, full_path,
SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
cFYI(1, ("posix del rc %d", rc));
goto psx_del_no_retry;
}
- rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
+retry_std_delete:
+ rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+
psx_del_no_retry:
if (!rc) {
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
+ if (inode)
+ drop_nlink(inode);
} else if (rc == -ENOENT) {
- d_drop(direntry);
+ d_drop(dentry);
} else if (rc == -ETXTBSY) {
- int oplock = 0;
- __u16 netfid;
-
- rc = CIFSSMBOpen(xid, pTcon, 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, pTcon, netfid, NULL,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, pTcon, netfid);
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
+ rc = cifs_rename_pending_delete(full_path, dentry, xid);
+ if (rc == 0)
+ drop_nlink(inode);
+ } else if (rc == -EACCES && dosattr == 0) {
+ attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
+ if (attrs == NULL) {
+ rc = -ENOMEM;
+ goto out_reval;
}
- } 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 (!(pTcon->ses->flags & CIFS_SES_NT4))
- rc = CIFSSMBSetPathInfo(xid, pTcon, 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, pTcon,
- 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, pTcon, 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, pTcon,
- pinfo_buf,
- netfid,
- current->tgid);
- CIFSSMBClose(xid, pTcon, netfid);
- }
- }
- kfree(pinfo_buf);
- }
- if (rc == 0) {
- rc = CIFSSMBDelFile(xid, pTcon, full_path,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (!rc) {
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
- } else if (rc == -ETXTBSY) {
- int oplock = 0;
- __u16 netfid;
-
- rc = CIFSSMBOpen(xid, pTcon, 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, pTcon,
- netfid, NULL,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, pTcon, netfid);
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
- }
- /* BB if rc = -ETXTBUSY goto the rename logic BB */
- }
- }
- }
- if (direntry->d_inode) {
- cifsInode = CIFS_I(direntry->d_inode);
- cifsInode->time = 0; /* will force revalidate to get info
- when needed */
- direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
+ /* try to reset dos attributes */
+ origattr = cifsInode->cifsAttrs;
+ if (origattr == 0)
+ origattr |= ATTR_NORMAL;
+ dosattr = origattr & ~ATTR_READONLY;
+ if (dosattr == 0)
+ dosattr |= ATTR_NORMAL;
+ dosattr |= ATTR_HIDDEN;
+
+ rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
+ if (rc != 0)
+ goto out_reval;
+
+ goto retry_std_delete;
}
+
+ /* undo the setattr if we errored out and it's needed */
+ if (rc != 0 && dosattr != 0)
+ cifs_set_file_info(inode, attrs, xid, full_path, origattr);
+
+out_reval:
if (inode) {
- inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
cifsInode = CIFS_I(inode);
- cifsInode->time = 0; /* force revalidate of dir as well */
+ cifsInode->time = 0; /* will force revalidate to get info
+ when needed */
+ inode->i_ctime = current_fs_time(sb);
}
+ dir->i_ctime = dir->i_mtime = current_fs_time(sb);
+ cifsInode = CIFS_I(dir);
+ CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
kfree(full_path);
+ kfree(attrs);
FreeXid(xid);
return rc;
}
int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
{
- int rc = 0;
+ int rc = 0, tmprc;
int xid;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
kfree(pInfo);
goto mkdir_get_info;
}
+
/* Is an i_ino of zero legal? */
/* Are there sanity checks we can use to ensure that
the server is really filling in that field? */
.device = 0,
};
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
- args.uid = (__u64)current->fsuid;
+ args.uid = (__u64)current_fsuid();
if (inode->i_mode & S_ISGID)
args.gid = (__u64)inode->i_gid;
else
- args.gid = (__u64)current->fsgid;
+ args.gid = (__u64)current_fsgid();
} else {
args.uid = NO_CHANGE_64;
args.gid = NO_CHANGE_64;
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
(mode & S_IWUGO) == 0) {
FILE_BASIC_INFO pInfo;
+ struct cifsInodeInfo *cifsInode;
+ u32 dosattrs;
+
memset(&pInfo, 0, sizeof(pInfo));
- pInfo.Attributes = cpu_to_le32(ATTR_READONLY);
- CIFSSMBSetPathInfo(xid, pTcon, full_path,
- &pInfo, cifs_sb->local_nls,
+ cifsInode = CIFS_I(newinode);
+ dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
+ pInfo.Attributes = cpu_to_le32(dosattrs);
+ tmprc = CIFSSMBSetPathInfo(xid, pTcon,
+ full_path, &pInfo,
+ cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (tmprc == 0)
+ cifsInode->cifsAttrs = dosattrs;
}
if (direntry->d_inode) {
if (cifs_sb->mnt_cifs_flags &
if (cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_SET_UID) {
direntry->d_inode->i_uid =
- current->fsuid;
+ current_fsuid();
if (inode->i_mode & S_ISGID)
direntry->d_inode->i_gid =
inode->i_gid;
else
direntry->d_inode->i_gid =
- current->fsgid;
+ current_fsgid();
}
}
}
cifsInode = CIFS_I(direntry->d_inode);
cifsInode->time = 0; /* force revalidate to go get info when
needed */
+
+ cifsInode = CIFS_I(inode);
+ cifsInode->time = 0; /* force revalidate to get parent dir info
+ since cached search results now invalid */
+
direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
current_fs_time(inode->i_sb);
return rc;
}
-int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
- struct inode *target_inode, struct dentry *target_direntry)
+static int
+cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath,
+ struct dentry *to_dentry, const char *toPath)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ __u16 srcfid;
+ int oplock, rc;
+
+ /* try path-based rename first */
+ rc = CIFSSMBRename(xid, pTcon, fromPath, toPath, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ /*
+ * don't bother with rename by filehandle unless file is busy and
+ * source Note that cross directory moves do not work with
+ * rename by filehandle to various Windows servers.
+ */
+ if (rc == 0 || rc != -ETXTBSY)
+ return rc;
+
+ /* open the file to be renamed -- we need DELETE perms */
+ rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE,
+ CREATE_NOT_DIR, &srcfid, &oplock, NULL,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if (rc == 0) {
+ rc = CIFSSMBRenameOpenFile(xid, pTcon, srcfid,
+ (const char *) to_dentry->d_name.name,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ CIFSSMBClose(xid, pTcon, srcfid);
+ }
+
+ return rc;
+}
+
+int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
+ struct inode *target_dir, struct dentry *target_dentry)
{
- char *fromName;
- char *toName;
+ char *fromName = NULL;
+ char *toName = NULL;
struct cifs_sb_info *cifs_sb_source;
struct cifs_sb_info *cifs_sb_target;
- struct cifsTconInfo *pTcon;
- int xid;
- int rc = 0;
+ struct cifsTconInfo *tcon;
+ FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
+ FILE_UNIX_BASIC_INFO *info_buf_target;
+ int xid, rc, tmprc;
+
+ cifs_sb_target = CIFS_SB(target_dir->i_sb);
+ cifs_sb_source = CIFS_SB(source_dir->i_sb);
+ tcon = cifs_sb_source->tcon;
xid = GetXid();
- cifs_sb_target = CIFS_SB(target_inode->i_sb);
- cifs_sb_source = CIFS_SB(source_inode->i_sb);
- pTcon = cifs_sb_source->tcon;
+ /*
+ * BB: this might be allowed if same server, but different share.
+ * Consider adding support for this
+ */
+ if (tcon != cifs_sb_target->tcon) {
+ rc = -EXDEV;
+ goto cifs_rename_exit;
+ }
- if (pTcon != cifs_sb_target->tcon) {
- FreeXid(xid);
- return -EXDEV; /* BB actually could be allowed if same server,
- but different share.
- Might eventually add support for this */
+ /*
+ * we already have the rename sem so we do not need to
+ * grab it again here to protect the path integrity
+ */
+ fromName = build_path_from_dentry(source_dentry);
+ if (fromName == NULL) {
+ rc = -ENOMEM;
+ goto cifs_rename_exit;
}
- /* we already have the rename sem so we do not need to grab it again
- here to protect the path integrity */
- fromName = build_path_from_dentry(source_direntry);
- toName = build_path_from_dentry(target_direntry);
- if ((fromName == NULL) || (toName == NULL)) {
+ toName = build_path_from_dentry(target_dentry);
+ if (toName == NULL) {
rc = -ENOMEM;
goto cifs_rename_exit;
}
- rc = CIFSSMBRename(xid, pTcon, fromName, toName,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc == -EEXIST) {
- /* check if they are the same file because rename of hardlinked
- files is a noop */
- FILE_UNIX_BASIC_INFO *info_buf_source;
- FILE_UNIX_BASIC_INFO *info_buf_target;
+ rc = cifs_do_rename(xid, source_dentry, fromName,
+ target_dentry, toName);
+ if (rc == -EEXIST && tcon->unix_ext) {
+ /*
+ * Are src and dst hardlinks of same inode? We can
+ * only tell with unix extensions enabled
+ */
info_buf_source =
- kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
- if (info_buf_source != NULL) {
- info_buf_target = info_buf_source + 1;
- if (pTcon->unix_ext)
- rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
+ kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
+ GFP_KERNEL);
+ if (info_buf_source == NULL) {
+ rc = -ENOMEM;
+ goto cifs_rename_exit;
+ }
+
+ info_buf_target = info_buf_source + 1;
+ tmprc = CIFSSMBUnixQPathInfo(xid, tcon, fromName,
info_buf_source,
cifs_sb_source->local_nls,
cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- /* else rc is still EEXIST so will fall through to
- unlink the target and retry rename */
- if (rc == 0) {
- rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
- info_buf_target,
- cifs_sb_target->local_nls,
- /* remap based on source sb */
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- }
- if ((rc == 0) &&
- (info_buf_source->UniqueId ==
- info_buf_target->UniqueId)) {
- /* do not rename since the files are hardlinked which
- is a noop */
- } else {
- /* we either can not tell the files are hardlinked
- (as with Windows servers) or files are not
- hardlinked so delete the target manually before
- renaming to follow POSIX rather than Windows
- semantics */
- cifs_unlink(target_inode, target_direntry);
- rc = CIFSSMBRename(xid, pTcon, fromName,
- toName,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags
- & CIFS_MOUNT_MAP_SPECIAL_CHR);
- }
- kfree(info_buf_source);
- } /* if we can not get memory just leave rc as EEXIST */
- }
-
- if (rc)
- cFYI(1, ("rename rc %d", rc));
-
- if ((rc == -EIO) || (rc == -EEXIST)) {
- int oplock = 0;
- __u16 netfid;
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (tmprc != 0)
+ goto unlink_target;
- /* BB FIXME Is Generic Read correct for rename? */
- /* if renaming directory - we should not say CREATE_NOT_DIR,
- need to test renaming open directory, also GENERIC_READ
- might not right be right access to request */
- rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, NULL,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
+ tmprc = CIFSSMBUnixQPathInfo(xid, tcon,
+ toName, info_buf_target,
+ cifs_sb_target->local_nls,
+ /* remap based on source sb */
+ cifs_sb_source->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc == 0) {
- rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, pTcon, netfid);
+
+ if (tmprc == 0 && (info_buf_source->UniqueId ==
+ info_buf_target->UniqueId)) {
+ /* same file, POSIX says that this is a noop */
+ rc = 0;
+ goto cifs_rename_exit;
}
+ } /* else ... BB we could add the same check for Windows by
+ checking the UniqueId via FILE_INTERNAL_INFO */
+
+unlink_target:
+ if ((rc == -EACCES) || (rc == -EEXIST)) {
+ tmprc = cifs_unlink(target_dir, target_dentry);
+ if (tmprc)
+ goto cifs_rename_exit;
+
+ rc = cifs_do_rename(xid, source_dentry, fromName,
+ target_dentry, toName);
}
cifs_rename_exit:
+ kfree(info_buf_source);
kfree(fromName);
kfree(toName);
FreeXid(xid);
i_size_write(inode, offset);
spin_unlock(&inode->i_lock);
out_truncate:
- if (inode->i_op && inode->i_op->truncate)
+ if (inode->i_op->truncate)
inode->i_op->truncate(inode);
return 0;
out_sig:
return rc;
}
-int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
+static int
+cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
{
+ int rc;
int xid;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
+ char *full_path = NULL;
+ struct inode *inode = direntry->d_inode;
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct cifs_unix_set_info_args *args = NULL;
+
+ cFYI(1, ("setattr_unix on file %s attrs->ia_valid=0x%x",
+ direntry->d_name.name, attrs->ia_valid));
+
+ xid = GetXid();
+
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
+ /* check if we have permission to change attrs */
+ rc = inode_change_ok(inode, attrs);
+ if (rc < 0)
+ goto out;
+ else
+ rc = 0;
+ }
+
+ full_path = build_path_from_dentry(direntry);
+ if (full_path == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
+ /*
+ Flush data before changing file size or changing the last
+ write time of the file on the server. If the
+ flush returns error, store it to report later and continue.
+ BB: This should be smarter. Why bother flushing pages that
+ will be truncated anyway? Also, should we error out here if
+ the flush returns error?
+ */
+ rc = filemap_write_and_wait(inode->i_mapping);
+ if (rc != 0) {
+ cifsInode->write_behind_rc = rc;
+ rc = 0;
+ }
+ }
+
+ if (attrs->ia_valid & ATTR_SIZE) {
+ rc = cifs_set_file_size(inode, attrs, xid, full_path);
+ if (rc != 0)
+ goto out;
+ }
+
+ /* skip mode change if it's just for clearing setuid/setgid */
+ if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
+ attrs->ia_valid &= ~ATTR_MODE;
+
+ args = kmalloc(sizeof(*args), GFP_KERNEL);
+ if (args == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ /* set up the struct */
+ if (attrs->ia_valid & ATTR_MODE)
+ args->mode = attrs->ia_mode;
+ else
+ args->mode = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_UID)
+ args->uid = attrs->ia_uid;
+ else
+ args->uid = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_GID)
+ args->gid = attrs->ia_gid;
+ else
+ args->gid = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_ATIME)
+ args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
+ else
+ args->atime = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_MTIME)
+ args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime);
+ else
+ args->mtime = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_CTIME)
+ args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime);
+ else
+ args->ctime = NO_CHANGE_64;
+
+ args->device = 0;
+ rc = CIFSSMBUnixSetInfo(xid, pTcon, full_path, args,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if (!rc)
+ rc = inode_setattr(inode, attrs);
+out:
+ kfree(args);
+ kfree(full_path);
+ FreeXid(xid);
+ return rc;
+}
+
+static int
+cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
+{
+ int xid;
+ struct inode *inode = direntry->d_inode;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
char *full_path = NULL;
int rc = -EACCES;
- FILE_BASIC_INFO time_buf;
- bool set_time = false;
- bool set_dosattr = false;
+ __u32 dosattr = 0;
__u64 mode = NO_CHANGE_64;
- __u64 uid = NO_CHANGE_64;
- __u64 gid = NO_CHANGE_64;
- struct cifsInodeInfo *cifsInode;
- struct inode *inode = direntry->d_inode;
xid = GetXid();
cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
direntry->d_name.name, attrs->ia_valid));
- cifs_sb = CIFS_SB(inode->i_sb);
- pTcon = cifs_sb->tcon;
-
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
/* check if we have permission to change attrs */
rc = inode_change_ok(inode, attrs);
FreeXid(xid);
return -ENOMEM;
}
- cifsInode = CIFS_I(inode);
if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
/*
* CIFSACL support + proper Windows to Unix idmapping, we may be
* able to support this in the future.
*/
- if (!pTcon->unix_ext &&
- !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) {
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID))
attrs->ia_valid &= ~(ATTR_UID | ATTR_GID);
- } else {
- if (attrs->ia_valid & ATTR_UID) {
- cFYI(1, ("UID changed to %d", attrs->ia_uid));
- uid = attrs->ia_uid;
- }
- if (attrs->ia_valid & ATTR_GID) {
- cFYI(1, ("GID changed to %d", attrs->ia_gid));
- gid = attrs->ia_gid;
- }
- }
-
- time_buf.Attributes = 0;
/* skip mode change if it's just for clearing setuid/setgid */
if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
mode = attrs->ia_mode;
}
- if ((pTcon->unix_ext)
- && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID))) {
- struct cifs_unix_set_info_args args = {
- .mode = mode,
- .uid = uid,
- .gid = gid,
- .ctime = NO_CHANGE_64,
- .atime = NO_CHANGE_64,
- .mtime = NO_CHANGE_64,
- .device = 0,
- };
- rc = CIFSSMBUnixSetInfo(xid, pTcon, full_path, &args,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- } else if (attrs->ia_valid & ATTR_MODE) {
+ if (attrs->ia_valid & ATTR_MODE) {
rc = 0;
#ifdef CONFIG_CIFS_EXPERIMENTAL
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
#endif
if (((mode & S_IWUGO) == 0) &&
(cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
- set_dosattr = true;
- time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs |
- ATTR_READONLY);
+
+ dosattr = cifsInode->cifsAttrs | ATTR_READONLY;
+
/* fix up mode if we're not using dynperm */
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
attrs->ia_mode = inode->i_mode & ~S_IWUGO;
} else if ((mode & S_IWUGO) &&
(cifsInode->cifsAttrs & ATTR_READONLY)) {
- /* If file is readonly on server, we would
- not be able to write to it - so if any write
- bit is enabled for user or group or other we
- need to at least try to remove r/o dos attr */
- set_dosattr = true;
- time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs &
- (~ATTR_READONLY));
- /* Windows ignores set to zero */
- if (time_buf.Attributes == 0)
- time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL);
+
+ dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY;
+ /* Attributes of 0 are ignored */
+ if (dosattr == 0)
+ dosattr |= ATTR_NORMAL;
/* reset local inode permissions to normal */
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
}
}
- if (attrs->ia_valid & ATTR_ATIME) {
- set_time = true;
- time_buf.LastAccessTime =
- cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
- } else
- time_buf.LastAccessTime = 0;
-
- if (attrs->ia_valid & ATTR_MTIME) {
- set_time = true;
- time_buf.LastWriteTime =
- cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
- } else
- time_buf.LastWriteTime = 0;
- /* Do not set ctime explicitly unless other time
- stamps are changed explicitly (i.e. by utime()
- since we would then have a mix of client and
- server times */
-
- if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
- set_time = true;
- /* Although Samba throws this field away
- it may be useful to Windows - but we do
- not want to set ctime unless some other
- timestamp is changing */
- cFYI(1, ("CIFS - CTIME changed"));
- time_buf.ChangeTime =
- cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
- } else
- time_buf.ChangeTime = 0;
-
- if (set_time || set_dosattr) {
- time_buf.CreationTime = 0; /* do not change */
- /* In the future we should experiment - try setting timestamps
- via Handle (SetFileInfo) instead of by path */
- if (!(pTcon->ses->flags & CIFS_SES_NT4))
- rc = CIFSSMBSetPathInfo(xid, pTcon, full_path,
- &time_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;
-
- cFYI(1, ("calling SetFileInfo since SetPathInfo for "
- "times not supported by this server"));
- /* BB we could scan to see if we already have it open
- and pass in pid of opener to function */
- 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) {
- rc = CIFSSMBSetFileInfo(xid, pTcon, &time_buf,
- netfid, current->tgid);
- CIFSSMBClose(xid, pTcon, netfid);
- } else {
- /* BB For even older servers we could convert time_buf
- into old DOS style which uses two second
- granularity */
+ if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) ||
+ ((attrs->ia_valid & ATTR_MODE) && dosattr)) {
+ rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
+ /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */
- /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
- &time_buf, cifs_sb->local_nls); */
- }
- }
/* Even if error on time set, no sense failing the call if
the server would set the time to a reasonable value anyway,
and this check ensures that we are not being called from
sys_utimes in which case we ought to fail the call back to
the user when the server rejects the call */
if ((rc) && (attrs->ia_valid &
- (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
+ (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
rc = 0;
}
return rc;
}
+int
+cifs_setattr(struct dentry *direntry, struct iattr *attrs)
+{
+ struct inode *inode = direntry->d_inode;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
+
+ if (pTcon->unix_ext)
+ return cifs_setattr_unix(direntry, attrs);
+
+ return cifs_setattr_nounix(direntry, attrs);
+
+ /* BB: add cifs_setattr_legacy for really old servers */
+}
+
#if 0
void cifs_delete_inode(struct inode *inode)
{
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff