static int nfs_sillyrename(struct inode *dir, const char *name, int len)
{
struct inode *inode;
char silly[16];
int slen, ret;
dir->i_count++;
if (nfs_lookup(dir, name, len, &inode) < 0)
return -EIO; /* arbitrary */
if (inode->i_count == 1 || NFS_RENAMED_DIR(inode)) {
iput(inode);
return -EIO;
}
slen = sprintf(silly, ".nfs%ld", inode->i_ino);
if (len == slen && !strncmp(name, silly, len)) {
iput(inode);
return -EIO; /* DWIM */
}
ret = nfs_proc_rename(NFS_SERVER(dir), NFS_FH(dir), name,
NFS_FH(dir), silly, 0);
if (ret >= 0) {
nfs_lookup_cache_remove(dir, NULL, name);
nfs_lookup_cache_remove(dir, NULL, silly);
NFS_RENAMED_DIR(inode) = dir;
dir->i_count++;
}
iput(inode);
return ret;
}
static int nfs_rename(struct inode *old_dir, const char *old_name, int old_len,
struct inode *new_dir, const char *new_name, int new_len,
int must_be_dir)
{
int error;
if (!old_dir || !S_ISDIR(old_dir->i_mode)) {
printk("nfs_rename: old inode is NULL or not a directory\n");
iput(old_dir);
iput(new_dir);
return -ENOENT;
}
if (!new_dir || !S_ISDIR(new_dir->i_mode)) {
printk("nfs_rename: new inode is NULL or not a directory\n");
iput(old_dir);
iput(new_dir);
return -ENOENT;
}
if (old_len > NFS_MAXNAMLEN || new_len > NFS_MAXNAMLEN) {
iput(old_dir);
iput(new_dir);
return -ENAMETOOLONG;
}
error = nfs_proc_rename(NFS_SERVER(old_dir),
NFS_FH(old_dir), old_name,
NFS_FH(new_dir), new_name,
must_be_dir);
nfs_lookup_cache_remove(old_dir, NULL, old_name);
nfs_lookup_cache_remove(new_dir, NULL, new_name);
iput(old_dir);
iput(new_dir);
return error;
}
static int nfs_link(struct inode *oldinode, struct inode *dir,
const char *name, int len)
{
int error;
if (!oldinode) {
printk("nfs_link: old inode is NULL\n");
iput(oldinode);
iput(dir);
return -ENOENT;
}
if (!dir || !S_ISDIR(dir->i_mode)) {
printk("nfs_link: dir is NULL or not a directory\n");
iput(oldinode);
iput(dir);
return -ENOENT;
}
if (len > NFS_MAXNAMLEN) {
iput(oldinode);
iput(dir);
return -ENAMETOOLONG;
}
error = nfs_proc_link(NFS_SERVER(oldinode), NFS_FH(oldinode),
NFS_FH(dir), name);
nfs_lookup_cache_remove(dir, oldinode, NULL);
NFS_CACHEINV(oldinode);
iput(oldinode);
iput(dir);
return error;
}
static int nfs_mkdir(struct inode *dir, const char *name, int len, int mode)
{
struct nfs_sattr sattr;
struct nfs_fattr fattr;
struct nfs_fh fhandle;
int error;
if (!dir || !S_ISDIR(dir->i_mode)) {
printk("nfs_mkdir: inode is NULL or not a directory\n");
iput(dir);
return -ENOENT;
}
if (len > NFS_MAXNAMLEN) {
iput(dir);
return -ENAMETOOLONG;
}
sattr.mode = mode;
sattr.uid = sattr.gid = sattr.size = (unsigned) -1;
sattr.atime.seconds = sattr.mtime.seconds = (unsigned) -1;
error = nfs_proc_mkdir(NFS_SERVER(dir), NFS_FH(dir),
name, &sattr, &fhandle, &fattr);
if (!error) {
if (fattr.fileid == dir->i_ino)
printk("Sony NewsOS 4.1R buggy nfs server?\n");
else
nfs_lookup_cache_add(dir, name, &fhandle, &fattr);
}
iput(dir);
/* The parent dir link count may have changed */
nfs_lookup_cache_remove( NULL, dir, NULL);
return error;
}
void nfs_sillyrename_cleanup(struct inode *inode)
{
struct inode *dir = NFS_RENAMED_DIR(inode);
char silly[14];
int error, slen;
slen = sprintf(silly, ".nfs%ld", inode->i_ino);
error = nfs_proc_remove(NFS_SERVER(dir), NFS_FH(dir), silly);
nfs_lookup_cache_remove(dir, NULL, silly);
if (error < 0)
printk("NFS silly_rename cleanup failed (err = %d)\n",
-error);
NFS_RENAMED_DIR(inode) = NULL;
iput(dir);
}
static int nfs_rmdir(struct inode *dir, const char *name, int len)
{
int error;
if (!dir || !S_ISDIR(dir->i_mode)) {
printk("nfs_rmdir: inode is NULL or not a directory\n");
iput(dir);
return -ENOENT;
}
if (len > NFS_MAXNAMLEN) {
iput(dir);
return -ENAMETOOLONG;
}
error = nfs_proc_rmdir(NFS_SERVER(dir), NFS_FH(dir), name);
nfs_lookup_cache_remove(dir, NULL, name);
iput(dir);
return error;
}
static int nfs_mknod(struct inode *dir, const char *name, int len,
int mode, int rdev)
{
struct nfs_sattr sattr;
struct nfs_fattr fattr;
struct nfs_fh fhandle;
int error;
if (!dir || !S_ISDIR(dir->i_mode)) {
printk("nfs_mknod: inode is NULL or not a directory\n");
iput(dir);
return -ENOENT;
}
if (len > NFS_MAXNAMLEN) {
iput(dir);
return -ENAMETOOLONG;
}
if (S_ISFIFO(mode))
sattr.mode = (mode & ~S_IFMT) | S_IFCHR;
else
sattr.mode = mode;
sattr.uid = sattr.gid = (unsigned) -1;
if (S_ISCHR(mode) || S_ISBLK(mode))
sattr.size = rdev; /* get out your barf bag */
else
sattr.size = (unsigned) -1;
sattr.atime.seconds = sattr.mtime.seconds = (unsigned) -1;
error = nfs_proc_create(NFS_SERVER(dir), NFS_FH(dir),
name, &sattr, &fhandle, &fattr);
if (error == -EINVAL && (S_ISFIFO(mode))) {
sattr.mode = mode;
error = nfs_proc_create(NFS_SERVER(dir), NFS_FH(dir),
name, &sattr, &fhandle, &fattr);
}
if (!error)
{
nfs_lookup_cache_add(dir, name, &fhandle, &fattr);
/* The parent dir inode count may have changed ! */
nfs_lookup_cache_remove( NULL, dir, NULL);
}
iput(dir);
return error;
}
