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Prior to Linux 3.1 the kern_path_parent symbol was exported for use by kernel modules. As of Linux 3.1 it is now longer easily available. To handle this case the spl will now dynamically look up address of the missing symbol at module load time. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #52
84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
/*****************************************************************************\
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://github.com/behlendorf/spl/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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#ifndef _SPL_FILE_COMPAT_H
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#define _SPL_FILE_COMPAT_H
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#include <linux/fs.h>
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#ifdef HAVE_FDTABLE_HEADER
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#include <linux/fdtable.h>
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#endif
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static inline struct file *
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spl_filp_open(const char *name, int flags, int mode, int *err)
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{
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struct file *filp = NULL;
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int rc;
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filp = filp_open(name, flags, mode);
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if (IS_ERR(filp)) {
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rc = PTR_ERR(filp);
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if (err)
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*err = rc;
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filp = NULL;
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}
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return filp;
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}
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#define spl_filp_close(f) filp_close(f, NULL)
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#define spl_filp_poff(f) (&(f)->f_pos)
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#define spl_filp_write(fp, b, s, p) (fp)->f_op->write((fp), (b), (s), p)
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#ifdef HAVE_3ARGS_FILE_FSYNC
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#define spl_filp_fsync(fp, sync) (fp)->f_op->fsync((fp), \
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(fp)->f_dentry, sync)
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#else
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#define spl_filp_fsync(fp, sync) (fp)->f_op->fsync((fp), sync)
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#endif
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#ifdef HAVE_INODE_I_MUTEX
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#define spl_inode_lock(ip) (mutex_lock(&(ip)->i_mutex))
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#define spl_inode_lock_nested(ip, type) (mutex_lock_nested((&(ip)->i_mutex), \
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(type)))
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#define spl_inode_unlock(ip) (mutex_unlock(&(ip)->i_mutex))
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#else
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#define spl_inode_lock(ip) (down(&(ip)->i_sem))
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#define spl_inode_unlock(ip) (up(&(ip)->i_sem))
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#endif /* HAVE_INODE_I_MUTEX */
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#ifdef HAVE_KERN_PATH_PARENT_HEADER
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# ifndef HAVE_KERN_PATH_PARENT_SYMBOL
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typedef int (*kern_path_parent_t)(const char *, struct nameidata *);
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extern kern_path_parent_t kern_path_parent_fn;
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# define spl_kern_path_parent(path, nd) kern_path_parent_fn(path, nd)
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# else
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# define spl_kern_path_parent(path, nd) kern_path_parent(path, nd)
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# endif /* HAVE_KERN_PATH_PARENT_SYMBOL */
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#else
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# define spl_kern_path_parent(path, nd) path_lookup(path, LOOKUP_PARENT, nd)
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#endif /* HAVE_KERN_PATH_PARENT_HEADER */
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#endif /* SPL_FILE_COMPAT_H */
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