UBUNTU: SAUCE: (noup) Update spl to 0.6.5.9-1, zfs to 0.6.5.9-2

[mirror_ubuntu-bionic-kernel.git] / spl / include / linux / file_compat.h

diff --git a/spl/include/linux/file_compat.h b/spl/include/linux/file_compat.h
new file mode 100644 (file)
index 0000000..9165145
--- /dev/null
+++ b/spl/include/linux/file_compat.h
@@ -0,0 +1,100 @@
+/*****************************************************************************\
+ *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
+ *  Copyright (C) 2007 The Regents of the University of California.
+ *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
+ *  UCRL-CODE-235197
+ *
+ *  This file is part of the SPL, Solaris Porting Layer.
+ *  For details, see <http://zfsonlinux.org/>.
+ *
+ *  The SPL is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by the
+ *  Free Software Foundation; either version 2 of the License, or (at your
+ *  option) any later version.
+ *
+ *  The SPL 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 the SPL.  If not, see <http://www.gnu.org/licenses/>.
+\*****************************************************************************/
+
+#ifndef _SPL_FILE_COMPAT_H
+#define _SPL_FILE_COMPAT_H
+
+#include <linux/fs.h>
+#ifdef HAVE_FDTABLE_HEADER
+#include <linux/fdtable.h>
+#endif
+
+static inline struct file *
+spl_filp_open(const char *name, int flags, int mode, int *err)
+{
+        struct file *filp = NULL;
+        int rc;
+
+        filp = filp_open(name, flags, mode);
+        if (IS_ERR(filp)) {
+                rc = PTR_ERR(filp);
+                if (err)
+                        *err = rc;
+                filp = NULL;
+        }
+        return filp;
+}
+
+#define spl_filp_close(f)              filp_close(f, NULL)
+#define spl_filp_poff(f)               (&(f)->f_pos)
+#define spl_filp_write(fp, b, s, p)    (fp)->f_op->write((fp), (b), (s), p)
+
+static inline int
+spl_filp_fallocate(struct file *fp, int mode, loff_t offset, loff_t len)
+{
+       int error = -EOPNOTSUPP;
+
+#ifdef HAVE_FILE_FALLOCATE
+       if (fp->f_op->fallocate)
+               error = fp->f_op->fallocate(fp, mode, offset, len);
+#else
+#ifdef HAVE_INODE_FALLOCATE
+       if (fp->f_dentry && fp->f_dentry->d_inode &&
+           fp->f_dentry->d_inode->i_op->fallocate)
+               error = fp->f_dentry->d_inode->i_op->fallocate(
+                   fp->f_dentry->d_inode, mode, offset, len);
+#endif /* HAVE_INODE_FALLOCATE */
+#endif /*HAVE_FILE_FALLOCATE */
+
+       return (error);
+}
+
+#ifdef HAVE_2ARGS_VFS_FSYNC
+#define        spl_filp_fsync(fp, sync)        vfs_fsync(fp, sync)
+#else
+#define        spl_filp_fsync(fp, sync)        vfs_fsync(fp, (fp)->f_dentry, sync)
+#endif /* HAVE_2ARGS_VFS_FSYNC */
+
+#ifdef HAVE_INODE_LOCK_SHARED
+#define        spl_inode_lock(ip)              inode_lock(ip)
+#define        spl_inode_unlock(ip)            inode_unlock(ip)
+#define        spl_inode_lock_shared(ip)       inode_lock_shared(ip)
+#define        spl_inode_unlock_shared(ip)     inode_unlock_shared(ip)
+#define        spl_inode_trylock(ip)           inode_trylock(ip)
+#define        spl_inode_trylock_shared(ip)    inode_trylock_shared(ip)
+#define        spl_inode_is_locked(ip)         inode_is_locked(ip)
+#define        spl_inode_lock_nested(ip, s)    inode_lock_nested(ip, s)
+#else
+#define        spl_inode_lock(ip)              mutex_lock(&(ip)->i_mutex)
+#define        spl_inode_unlock(ip)            mutex_unlock(&(ip)->i_mutex)
+#define        spl_inode_lock_shared(ip)       mutex_lock(&(ip)->i_mutex)
+#define        spl_inode_unlock_shared(ip)     mutex_unlock(&(ip)->i_mutex)
+#define        spl_inode_trylock(ip)           mutex_trylock(&(ip)->i_mutex)
+#define        spl_inode_trylock_shared(ip)    mutex_trylock(&(ip)->i_mutex)
+#define        spl_inode_is_locked(ip)         mutex_is_locked(&(ip)->i_mutex)
+#define        spl_inode_lock_nested(ip, s)    mutex_lock_nested(&(ip)->i_mutex, s)
+#endif
+
+#endif /* SPL_FILE_COMPAT_H */
+