+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * Copyright (C) 2001, 2002, 2003, 2004 Cluster File Systems, Inc.
+ *
+ * Author: <braam@clusterfs.com>
+ *
+ * This file is part of Lustre, http://www.lustre.org.
+ *
+ * Lustre is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * Lustre 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Lustre; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * lustre VFS/process permission interface
+ */
+
#ifndef __LVFS_H__
#define __LVFS_H__
-#include <linux/kp30.h>
+#include <libcfs/kp30.h>
-#define LL_FID_NAMELEN (16 + 1 + 8 + 1)
+#define LL_ID_NAMELEN (16 + 1 + 8 + 1)
#if defined __KERNEL__
+#include <linux/dcache.h>
+#include <linux/namei.h>
+#include <linux/lustre_compat25.h>
#include <linux/lvfs_linux.h>
-#endif
+#endif
#ifdef LIBLUSTRE
#include <lvfs_user_fs.h>
#endif
+struct mds_grp_hash_entry;
+
/* simple.c */
struct lvfs_ucred {
- __u32 luc_fsuid;
- __u32 luc_fsgid;
- __u32 luc_cap;
- __u32 luc_suppgid1;
- __u32 luc_suppgid2;
+ struct lustre_sec_desc *luc_lsd;
+ struct group_info *luc_ginfo;
+ __u32 luc_uid;
+ __u32 luc_gid;
+ __u32 luc_fsuid;
+ __u32 luc_fsgid;
+ __u32 luc_cap;
+ __u32 luc_umask;
};
struct lvfs_callback_ops {
- struct dentry *(*l_fid2dentry)(__u64 id_ino, __u32 gen, __u64 gr, void *data);
+ struct dentry *(*l_id2dentry)(__u64 ino, __u32 gen,
+ __u64 gr, void *data);
};
#define OBD_RUN_CTXT_MAGIC 0xC0FFEEAA
#define OBD_CTXT_DEBUG /* development-only debugging */
struct lvfs_run_ctxt {
- struct vfsmount *pwdmnt;
- struct dentry *pwd;
- mm_segment_t fs;
- struct lvfs_ucred luc;
- int ngroups;
+ struct vfsmount *pwdmnt;
+ struct dentry *pwd;
+ mm_segment_t fs;
+ struct lvfs_ucred luc;
struct lvfs_callback_ops cb_ops;
+ int ngroups;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
+ struct group_info *group_info;
+#else
+ struct group_info group_info;
+#endif
#ifdef OBD_CTXT_DEBUG
- int pid;
- __u32 magic;
+ int pid;
+ __u32 magic;
#endif
};
+struct lvfs_obd_ctxt {
+ struct vfsmount *loc_mnt;
+ atomic_t loc_refcount;
+ char *loc_name;
+ struct list_head loc_list;
+};
+
#ifdef OBD_CTXT_DEBUG
#define OBD_SET_CTXT_MAGIC(ctxt) (ctxt)->magic = OBD_RUN_CTXT_MAGIC
#else
#endif
/* lvfs_common.c */
-struct dentry *lvfs_fid2dentry(struct lvfs_run_ctxt *, __u64, __u32, __u64 ,void *data);
+struct dentry *lvfs_id2dentry(struct lvfs_run_ctxt *, __u64,
+ __u32, __u64 ,void *data);
void push_ctxt(struct lvfs_run_ctxt *save, struct lvfs_run_ctxt *new_ctx,
struct lvfs_ucred *cred);
int lustre_fwrite(struct file *file, const void *buf, int len, loff_t *off);
int lustre_fsync(struct file *file);
long l_readdir(struct file * file, struct list_head *dentry_list);
-
+int lvfs_mount_fs(char *name, char *fstype, char *options, int flags,
+ struct lvfs_obd_ctxt **lvfs_ctxt);
+void lvfs_umount_fs(struct lvfs_obd_ctxt *lvfs_ctxt);
static inline void l_dput(struct dentry *de)
{
if (!de || IS_ERR(de))
void unlock_dir(struct inode *dir, void *lock);
#endif
-/* We need to hold the inode semaphore over the dcache lookup itself, or we
- * run the risk of entering the filesystem lookup path concurrently on SMP
- * systems, and instantiating two inodes for the same entry. We still
- * protect against concurrent addition/removal races with the DLM locking.
+/*
+ * typeof here is to suppress gcc warnings (gcc4, maybe others too) about wrong
+ * type in assignment. As kernel type may be chnaged we doing it this way.
+ * --umka
*/
-static inline struct dentry *ll_lookup_one_len(const char *fid_name,
- struct dentry *dparent,
- int fid_namelen)
+#define qstr_assign(qstr, n, l) \
+do { \
+ typeof(l) _len = (l); \
+ typeof(n) _name = (n); \
+ (qstr)->name = (typeof((qstr)->name))_name; \
+ (qstr)->len = (typeof((qstr)->len))_len; \
+} while (0)
+
+/* We need to hold the inode semaphore over the dcache lookup itself, or we run
+ * the risk of entering the filesystem lookup path concurrently on SMP systems,
+ * and instantiating two inodes for the same entry. We still protect against
+ * concurrent addition/removal races with the DLM locking. */
+static inline struct dentry *
+ll_lookup_one_len(const char *name, struct dentry *dparent, int namelen)
{
struct dentry *dchild;
+
#ifdef S_PDIROPS
- struct qstr qstr;
- void *lock;
- qstr.name = fid_name;
- qstr.len = fid_namelen;
- lock = lock_dir(dparent->d_inode, &qstr);
+ struct qstr qstr;
+ void *lock;
+
+ qstr_assign(&qstr, name, namelen);
+ lock = lock_dir(dparent->d_inode, &qstr);
#else
down(&dparent->d_inode->i_sem);
#endif
- dchild = lookup_one_len(fid_name, dparent, fid_namelen);
+ dchild = lookup_one_len(name, dparent, namelen);
#ifdef S_PDIROPS
- unlock_dir(dparent->d_inode, lock);
+ unlock_dir(dparent->d_inode, lock);
#else
up(&dparent->d_inode->i_sem);
#endif
+
+ if (IS_ERR(dchild) || dchild->d_inode == NULL)
+ return dchild;
+
+ if (is_bad_inode(dchild->d_inode)) {
+ CERROR("bad inode returned %lu/%u\n",
+ dchild->d_inode->i_ino, dchild->d_inode->i_generation);
+ dput(dchild);
+ dchild = ERR_PTR(-ENOENT);
+ }
+
return dchild;
}
}
#endif
-static inline int ll_fid2str(char *str, __u64 id, __u32 generation)
+static inline int ll_id2str(char *str, __u64 id, __u32 generation)
{
- return sprintf(str, "%llx:%08x", (unsigned long long)id, generation);
+ return sprintf(str, "%llx:%08x", (unsigned long long)id,
+ generation);
}
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff