mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 05:11:48 +00:00
4dc48193d7
These days we have kvzalloc() so we can delete CODA_ALLOC(). I made a couple related changes in coda_psdev_write(). First, I added some error handling to avoid a NULL dereference if the allocation failed. Second, I used kvmalloc() instead of kvzalloc() because we copy over the memory on the next line so there is no need to zero it first. Link: http://lkml.kernel.org/r/e56010c822e7a7cbaa8a238cf82ad31c67eaa800.1558117389.git.jaharkes@cs.cmu.edu Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Colin Ian King <colin.king@canonical.com> Cc: David Howells <dhowells@redhat.com> Cc: Fabian Frederick <fabf@skynet.be> 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>
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Coda File System, Linux Kernel module
|
|
*
|
|
* Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University
|
|
* Linux modifications (C) 1996, Peter J. Braam
|
|
* Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University
|
|
*
|
|
* Carnegie Mellon University encourages users of this software to
|
|
* contribute improvements to the Coda project.
|
|
*/
|
|
|
|
#ifndef _LINUX_CODA_FS
|
|
#define _LINUX_CODA_FS
|
|
|
|
#ifdef pr_fmt
|
|
#undef pr_fmt
|
|
#endif
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/param.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/types.h>
|
|
#include <linux/fs.h>
|
|
#include "coda_fs_i.h"
|
|
|
|
/* operations */
|
|
extern const struct inode_operations coda_dir_inode_operations;
|
|
extern const struct inode_operations coda_file_inode_operations;
|
|
extern const struct inode_operations coda_ioctl_inode_operations;
|
|
|
|
extern const struct dentry_operations coda_dentry_operations;
|
|
|
|
extern const struct address_space_operations coda_file_aops;
|
|
extern const struct address_space_operations coda_symlink_aops;
|
|
|
|
extern const struct file_operations coda_dir_operations;
|
|
extern const struct file_operations coda_file_operations;
|
|
extern const struct file_operations coda_ioctl_operations;
|
|
|
|
/* operations shared over more than one file */
|
|
int coda_open(struct inode *i, struct file *f);
|
|
int coda_release(struct inode *i, struct file *f);
|
|
int coda_permission(struct inode *inode, int mask);
|
|
int coda_revalidate_inode(struct inode *);
|
|
int coda_getattr(const struct path *, struct kstat *, u32, unsigned int);
|
|
int coda_setattr(struct dentry *, struct iattr *);
|
|
|
|
/* this file: heloers */
|
|
char *coda_f2s(struct CodaFid *f);
|
|
int coda_iscontrol(const char *name, size_t length);
|
|
|
|
void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
|
|
void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
|
|
unsigned short coda_flags_to_cflags(unsigned short);
|
|
|
|
/* sysctl.h */
|
|
void coda_sysctl_init(void);
|
|
void coda_sysctl_clean(void);
|
|
|
|
#define CODA_FREE(ptr, size) kvfree((ptr))
|
|
|
|
/* inode to cnode access functions */
|
|
|
|
static inline struct coda_inode_info *ITOC(struct inode *inode)
|
|
{
|
|
return container_of(inode, struct coda_inode_info, vfs_inode);
|
|
}
|
|
|
|
static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
|
|
{
|
|
return &(ITOC(inode)->c_fid);
|
|
}
|
|
|
|
static __inline__ char *coda_i2s(struct inode *inode)
|
|
{
|
|
return coda_f2s(&(ITOC(inode)->c_fid));
|
|
}
|
|
|
|
/* this will not zap the inode away */
|
|
static __inline__ void coda_flag_inode(struct inode *inode, int flag)
|
|
{
|
|
struct coda_inode_info *cii = ITOC(inode);
|
|
|
|
spin_lock(&cii->c_lock);
|
|
cii->c_flags |= flag;
|
|
spin_unlock(&cii->c_lock);
|
|
}
|
|
|
|
#endif
|