forked from luck/tmp_suning_uos_patched
6975259ae3
Inspired by NFS sysctl process Link: http://lkml.kernel.org/r/9afcc2cd09490849b309786bbf47fef75de7f91c.1558117389.git.jaharkes@cs.cmu.edu Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Colin Ian King <colin.king@canonical.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: David Howells <dhowells@redhat.com> Cc: Mikko Rapeli <mikko.rapeli@iki.fi> Cc: Sam Protsenko <semen.protsenko@linaro.org> Cc: Yann Droneaud <ydroneaud@opteya.com> Cc: Zhouyang Jia <jiazhouyang09@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Coda File System, Linux Kernel module
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*
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* Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University
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* Linux modifications (C) 1996, Peter J. Braam
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* Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University
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*
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* Carnegie Mellon University encourages users of this software to
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* contribute improvements to the Coda project.
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*/
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#ifndef _LINUX_CODA_FS
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#define _LINUX_CODA_FS
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#ifdef pr_fmt
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#undef pr_fmt
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#endif
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/param.h>
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#include <linux/mm.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <linux/wait.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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#include "coda_fs_i.h"
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/* operations */
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extern const struct inode_operations coda_dir_inode_operations;
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extern const struct inode_operations coda_file_inode_operations;
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extern const struct inode_operations coda_ioctl_inode_operations;
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extern const struct dentry_operations coda_dentry_operations;
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extern const struct address_space_operations coda_file_aops;
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extern const struct address_space_operations coda_symlink_aops;
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extern const struct file_operations coda_dir_operations;
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extern const struct file_operations coda_file_operations;
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extern const struct file_operations coda_ioctl_operations;
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/* operations shared over more than one file */
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int coda_open(struct inode *i, struct file *f);
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int coda_release(struct inode *i, struct file *f);
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int coda_permission(struct inode *inode, int mask);
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int coda_revalidate_inode(struct inode *);
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int coda_getattr(const struct path *, struct kstat *, u32, unsigned int);
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int coda_setattr(struct dentry *, struct iattr *);
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/* this file: heloers */
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char *coda_f2s(struct CodaFid *f);
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int coda_iscontrol(const char *name, size_t length);
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void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
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void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
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unsigned short coda_flags_to_cflags(unsigned short);
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/* inode to cnode access functions */
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static inline struct coda_inode_info *ITOC(struct inode *inode)
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{
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return container_of(inode, struct coda_inode_info, vfs_inode);
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}
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static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
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{
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return &(ITOC(inode)->c_fid);
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}
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static __inline__ char *coda_i2s(struct inode *inode)
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{
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return coda_f2s(&(ITOC(inode)->c_fid));
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}
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/* this will not zap the inode away */
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static __inline__ void coda_flag_inode(struct inode *inode, int flag)
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{
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struct coda_inode_info *cii = ITOC(inode);
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spin_lock(&cii->c_lock);
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cii->c_flags |= flag;
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spin_unlock(&cii->c_lock);
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}
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#endif
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