Commit 99ac48f5 authored by Arjan van de Ven's avatar Arjan van de Ven Committed by Linus Torvalds

[PATCH] mark f_ops const in the inode

Mark the f_ops members of inodes as const, as well as fix the
ripple-through this causes by places that copy this f_ops and then "do
stuff" with it.
Signed-off-by: default avatarArjan van de Ven <arjan@infradead.org>
Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent ec1b9466
......@@ -103,7 +103,7 @@ spufs_setattr(struct dentry *dentry, struct iattr *attr)
static int
spufs_new_file(struct super_block *sb, struct dentry *dentry,
struct file_operations *fops, int mode,
const struct file_operations *fops, int mode,
struct spu_context *ctx)
{
static struct inode_operations spufs_file_iops = {
......
......@@ -52,7 +52,7 @@ static int ppc_htab_open(struct inode *inode, struct file *file)
return single_open(file, ppc_htab_show, NULL);
}
struct file_operations ppc_htab_operations = {
const struct file_operations ppc_htab_operations = {
.open = ppc_htab_open,
.read = seq_read,
.llseek = seq_lseek,
......
......@@ -175,7 +175,7 @@ int drm_stub_open(struct inode *inode, struct file *filp)
drm_device_t *dev = NULL;
int minor = iminor(inode);
int err = -ENODEV;
struct file_operations *old_fops;
const struct file_operations *old_fops;
DRM_DEBUG("\n");
......
......@@ -126,7 +126,7 @@ static int i810_map_buffer(drm_buf_t * buf, struct file *filp)
drm_device_t *dev = priv->head->dev;
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
drm_i810_private_t *dev_priv = dev->dev_private;
struct file_operations *old_fops;
const struct file_operations *old_fops;
int retcode = 0;
if (buf_priv->currently_mapped == I810_BUF_MAPPED)
......
......@@ -128,7 +128,7 @@ static int i830_map_buffer(drm_buf_t * buf, struct file *filp)
drm_device_t *dev = priv->head->dev;
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
drm_i830_private_t *dev_priv = dev->dev_private;
struct file_operations *old_fops;
const struct file_operations *old_fops;
unsigned long virtual;
int retcode = 0;
......
......@@ -899,7 +899,7 @@ static const struct {
unsigned int minor;
char *name;
umode_t mode;
struct file_operations *fops;
const struct file_operations *fops;
} devlist[] = { /* list of minor devices */
{1, "mem", S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops},
{2, "kmem", S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops},
......
......@@ -129,7 +129,7 @@ static int misc_open(struct inode * inode, struct file * file)
int minor = iminor(inode);
struct miscdevice *c;
int err = -ENODEV;
struct file_operations *old_fops, *new_fops = NULL;
const struct file_operations *old_fops, *new_fops = NULL;
down(&misc_sem);
......
......@@ -923,7 +923,7 @@ void input_unregister_handler(struct input_handler *handler)
static int input_open_file(struct inode *inode, struct file *file)
{
struct input_handler *handler = input_table[iminor(inode) >> 5];
struct file_operations *old_fops, *new_fops = NULL;
const struct file_operations *old_fops, *new_fops = NULL;
int err;
/* No load-on-demand here? */
......
......@@ -233,7 +233,7 @@ static struct file_operations proc_applstats_ops = {
};
static void
create_seq_entry(char *name, mode_t mode, struct file_operations *f)
create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
{
struct proc_dir_entry *entry;
entry = create_proc_entry(name, mode, NULL);
......
......@@ -86,7 +86,7 @@ static int dvb_device_open(struct inode *inode, struct file *file)
if (dvbdev && dvbdev->fops) {
int err = 0;
struct file_operations *old_fops;
const struct file_operations *old_fops;
file->private_data = dvbdev;
old_fops = file->f_op;
......
......@@ -97,7 +97,7 @@ static int video_open(struct inode *inode, struct file *file)
unsigned int minor = iminor(inode);
int err = 0;
struct video_device *vfl;
struct file_operations *old_fops;
const struct file_operations *old_fops;
if(minor>=VIDEO_NUM_DEVICES)
return -ENODEV;
......
......@@ -56,7 +56,7 @@
typedef struct _i2o_proc_entry_t {
char *name; /* entry name */
mode_t mode; /* mode */
struct file_operations *fops; /* open function */
const struct file_operations *fops; /* open function */
} i2o_proc_entry;
/* global I2O /proc/i2o entry */
......
......@@ -130,7 +130,7 @@ static struct file_operations ulong_ro_fops = {
static struct dentry * __oprofilefs_create_file(struct super_block * sb,
struct dentry * root, char const * name, struct file_operations * fops,
struct dentry * root, char const * name, const struct file_operations * fops,
int perm)
{
struct dentry * dentry;
......@@ -203,7 +203,7 @@ int oprofilefs_create_ro_atomic(struct super_block * sb, struct dentry * root,
int oprofilefs_create_file(struct super_block * sb, struct dentry * root,
char const * name, struct file_operations * fops)
char const * name, const struct file_operations * fops)
{
if (!__oprofilefs_create_file(sb, root, name, fops, 0644))
return -EFAULT;
......@@ -212,7 +212,7 @@ int oprofilefs_create_file(struct super_block * sb, struct dentry * root,
int oprofilefs_create_file_perm(struct super_block * sb, struct dentry * root,
char const * name, struct file_operations * fops, int perm)
char const * name, const struct file_operations * fops, int perm)
{
if (!__oprofilefs_create_file(sb, root, name, fops, perm))
return -EFAULT;
......
......@@ -49,7 +49,7 @@ static int phone_open(struct inode *inode, struct file *file)
unsigned int minor = iminor(inode);
int err = 0;
struct phone_device *p;
struct file_operations *old_fops, *new_fops = NULL;
const struct file_operations *old_fops, *new_fops = NULL;
if (minor >= PHONE_NUM_DEVICES)
return -ENODEV;
......
......@@ -24,15 +24,15 @@
#include "usb.h"
#define MAX_USB_MINORS 256
static struct file_operations *usb_minors[MAX_USB_MINORS];
static const struct file_operations *usb_minors[MAX_USB_MINORS];
static DEFINE_SPINLOCK(minor_lock);
static int usb_open(struct inode * inode, struct file * file)
{
int minor = iminor(inode);
struct file_operations *c;
const struct file_operations *c;
int err = -ENODEV;
struct file_operations *old_fops, *new_fops = NULL;
const struct file_operations *old_fops, *new_fops = NULL;
spin_lock (&minor_lock);
c = usb_minors[minor];
......
......@@ -1581,7 +1581,7 @@ restart:
static struct inode *
gadgetfs_create_file (struct super_block *sb, char const *name,
void *data, struct file_operations *fops,
void *data, const struct file_operations *fops,
struct dentry **dentry_p);
static int activate_ep_files (struct dev_data *dev)
......@@ -1955,7 +1955,7 @@ module_param (default_perm, uint, 0644);
static struct inode *
gadgetfs_make_inode (struct super_block *sb,
void *data, struct file_operations *fops,
void *data, const struct file_operations *fops,
int mode)
{
struct inode *inode = new_inode (sb);
......@@ -1979,7 +1979,7 @@ gadgetfs_make_inode (struct super_block *sb,
*/
static struct inode *
gadgetfs_create_file (struct super_block *sb, char const *name,
void *data, struct file_operations *fops,
void *data, const struct file_operations *fops,
struct dentry **dentry_p)
{
struct dentry *dentry;
......
......@@ -250,7 +250,7 @@ int alloc_chrdev_region(dev_t *dev, unsigned baseminor, unsigned count,
}
int register_chrdev(unsigned int major, const char *name,
struct file_operations *fops)
const struct file_operations *fops)
{
struct char_device_struct *cd;
struct cdev *cdev;
......@@ -473,7 +473,7 @@ struct cdev *cdev_alloc(void)
return p;
}
void cdev_init(struct cdev *cdev, struct file_operations *fops)
void cdev_init(struct cdev *cdev, const struct file_operations *fops)
{
memset(cdev, 0, sizeof *cdev);
INIT_LIST_HEAD(&cdev->list);
......
......@@ -191,7 +191,7 @@ static int debugfs_create_by_name(const char *name, mode_t mode,
*/
struct dentry *debugfs_create_file(const char *name, mode_t mode,
struct dentry *parent, void *data,
struct file_operations *fops)
const struct file_operations *fops)
{
struct dentry *dentry = NULL;
int error;
......
......@@ -104,7 +104,7 @@ static struct inode *alloc_inode(struct super_block *sb)
{
static struct address_space_operations empty_aops;
static struct inode_operations empty_iops;
static struct file_operations empty_fops;
static const struct file_operations empty_fops;
struct inode *inode;
if (sb->s_op->alloc_inode)
......
......@@ -706,7 +706,7 @@ nfsd_close(struct file *filp)
* after it.
*/
static inline int nfsd_dosync(struct file *filp, struct dentry *dp,
struct file_operations *fop)
const struct file_operations *fop)
{
struct inode *inode = dp->d_inode;
int (*fsync) (struct file *, struct dentry *, int);
......
......@@ -560,7 +560,7 @@ static void proc_kill_inodes(struct proc_dir_entry *de)
struct file * filp = list_entry(p, struct file, f_u.fu_list);
struct dentry * dentry = filp->f_dentry;
struct inode * inode;
struct file_operations *fops;
const struct file_operations *fops;
if (dentry->d_op != &proc_dentry_operations)
continue;
......
......@@ -30,7 +30,7 @@ do { \
#endif
extern void create_seq_entry(char *name, mode_t mode, struct file_operations *f);
extern void create_seq_entry(char *name, mode_t mode, const struct file_operations *f);
extern int proc_exe_link(struct inode *, struct dentry **, struct vfsmount **);
extern int proc_tid_stat(struct task_struct *, char *);
extern int proc_tgid_stat(struct task_struct *, char *);
......
......@@ -731,7 +731,7 @@ static struct file_operations proc_sysrq_trigger_operations = {
struct proc_dir_entry *proc_root_kcore;
void create_seq_entry(char *name, mode_t mode, struct file_operations *f)
void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
{
struct proc_dir_entry *entry;
entry = create_proc_entry(name, mode, NULL);
......
......@@ -220,7 +220,7 @@ int do_select(int n, fd_set_bits *fds, s64 *timeout)
for (i = 0; i < n; ++rinp, ++routp, ++rexp) {
unsigned long in, out, ex, all_bits, bit = 1, mask, j;
unsigned long res_in = 0, res_out = 0, res_ex = 0;
struct file_operations *f_op = NULL;
const struct file_operations *f_op = NULL;
struct file *file = NULL;
in = *inp++; out = *outp++; ex = *exp++;
......
......@@ -5,13 +5,13 @@
struct cdev {
struct kobject kobj;
struct module *owner;
struct file_operations *ops;
const struct file_operations *ops;
struct list_head list;
dev_t dev;
unsigned int count;
};
void cdev_init(struct cdev *, struct file_operations *);
void cdev_init(struct cdev *, const struct file_operations *);
struct cdev *cdev_alloc(void);
......
......@@ -29,7 +29,7 @@ struct debugfs_blob_wrapper {
#if defined(CONFIG_DEBUG_FS)
struct dentry *debugfs_create_file(const char *name, mode_t mode,
struct dentry *parent, void *data,
struct file_operations *fops);
const struct file_operations *fops);
struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
......
......@@ -496,7 +496,7 @@ struct inode {
struct mutex i_mutex;
struct rw_semaphore i_alloc_sem;
struct inode_operations *i_op;
struct file_operations *i_fop; /* former ->i_op->default_file_ops */
const struct file_operations *i_fop; /* former ->i_op->default_file_ops */
struct super_block *i_sb;
struct file_lock *i_flock;
struct address_space *i_mapping;
......@@ -636,7 +636,7 @@ struct file {
} f_u;
struct dentry *f_dentry;
struct vfsmount *f_vfsmnt;
struct file_operations *f_op;
const struct file_operations *f_op;
atomic_t f_count;
unsigned int f_flags;
mode_t f_mode;
......@@ -1414,7 +1414,7 @@ extern void bd_release_from_disk(struct block_device *, struct gendisk *);
extern int alloc_chrdev_region(dev_t *, unsigned, unsigned, const char *);
extern int register_chrdev_region(dev_t, unsigned, const char *);
extern int register_chrdev(unsigned int, const char *,
struct file_operations *);
const struct file_operations *);
extern int unregister_chrdev(unsigned int, const char *);
extern void unregister_chrdev_region(dev_t, unsigned);
extern int chrdev_open(struct inode *, struct file *);
......
......@@ -957,7 +957,7 @@ struct input_handler {
struct input_handle* (*connect)(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id);
void (*disconnect)(struct input_handle *handle);
struct file_operations *fops;
const struct file_operations *fops;
int minor;
char *name;
......
......@@ -36,7 +36,7 @@ struct class_device;
struct miscdevice {
int minor;
const char *name;
struct file_operations *fops;
const struct file_operations *fops;
struct list_head list;
struct device *dev;
struct class_device *class;
......
......@@ -84,10 +84,10 @@ void oprofile_add_trace(unsigned long eip);
* the specified file operations.
*/
int oprofilefs_create_file(struct super_block * sb, struct dentry * root,
char const * name, struct file_operations * fops);
char const * name, const struct file_operations * fops);
int oprofilefs_create_file_perm(struct super_block * sb, struct dentry * root,
char const * name, struct file_operations * fops, int perm);
char const * name, const struct file_operations * fops, int perm);
/** Create a file for read/write access to an unsigned long. */
int oprofilefs_create_ulong(struct super_block * sb, struct dentry * root,
......
......@@ -58,7 +58,7 @@ struct proc_dir_entry {
gid_t gid;
loff_t size;
struct inode_operations * proc_iops;
struct file_operations * proc_fops;
const struct file_operations * proc_fops;
get_info_t *get_info;
struct module *owner;
struct proc_dir_entry *next, *parent, *subdir;
......@@ -189,7 +189,7 @@ static inline struct proc_dir_entry *proc_net_create(const char *name,
}
static inline struct proc_dir_entry *proc_net_fops_create(const char *name,
mode_t mode, struct file_operations *fops)
mode_t mode, const struct file_operations *fops)
{
struct proc_dir_entry *res = create_proc_entry(name, mode, proc_net);
if (res)
......
......@@ -30,12 +30,12 @@
*/
struct device;
extern int register_sound_special(struct file_operations *fops, int unit);
extern int register_sound_special_device(struct file_operations *fops, int unit, struct device *dev);
extern int register_sound_mixer(struct file_operations *fops, int dev);
extern int register_sound_midi(struct file_operations *fops, int dev);
extern int register_sound_dsp(struct file_operations *fops, int dev);
extern int register_sound_synth(struct file_operations *fops, int dev);
extern int register_sound_special(const struct file_operations *fops, int unit);
extern int register_sound_special_device(const struct file_operations *fops, int unit, struct device *dev);
extern int register_sound_mixer(const struct file_operations *fops, int dev);
extern int register_sound_midi(const struct file_operations *fops, int dev);
extern int register_sound_dsp(const struct file_operations *fops, int dev);
extern int register_sound_synth(const struct file_operations *fops, int dev);
extern void unregister_sound_special(int unit);
extern void unregister_sound_mixer(int unit);
......
......@@ -50,7 +50,7 @@ struct proc_dir_entry * rpc_proc_register(struct rpc_stat *);
void rpc_proc_unregister(const char *);
void rpc_proc_zero(struct rpc_program *);
struct proc_dir_entry * svc_proc_register(struct svc_stat *,
struct file_operations *);
const struct file_operations *);
void svc_proc_unregister(const char *);
void svc_seq_show(struct seq_file *,
......@@ -65,7 +65,7 @@ static inline void rpc_proc_unregister(const char *p) {}
static inline void rpc_proc_zero(struct rpc_program *p) {}
static inline struct proc_dir_entry *svc_proc_register(struct svc_stat *s,
struct file_operations *f) { return NULL; }
const struct file_operations *f) { return NULL; }
static inline void svc_proc_unregister(const char *p) {}
static inline void svc_seq_show(struct seq_file *seq,
......
......@@ -615,7 +615,7 @@ extern struct bus_type usb_bus_type;
*/
struct usb_class_driver {
char *name;
struct file_operations *fops;
const struct file_operations *fops;
int minor_base;
};
......
......@@ -75,7 +75,7 @@ struct video_device
int minor;
/* device ops + callbacks */
struct file_operations *fops;
const struct file_operations *fops;
void (*release)(struct video_device *vfd);
......
......@@ -186,7 +186,7 @@ struct snd_minor {
int type; /* SNDRV_DEVICE_TYPE_XXX */
int card; /* card number */
int device; /* device number */
struct file_operations *f_ops; /* file operations */
const struct file_operations *f_ops; /* file operations */
void *private_data; /* private data for f_ops->open */
char name[0]; /* device name (keep at the end of
structure) */
......@@ -200,14 +200,14 @@ extern int snd_ecards_limit;
void snd_request_card(int card);
int snd_register_device(int type, struct snd_card *card, int dev,
struct file_operations *f_ops, void *private_data,
const struct file_operations *f_ops, void *private_data,
const char *name);
int snd_unregister_device(int type, struct snd_card *card, int dev);
void *snd_lookup_minor_data(unsigned int minor, int type);
#ifdef CONFIG_SND_OSSEMUL
int snd_register_oss_device(int type, struct snd_card *card, int dev,
struct file_operations *f_ops, void *private_data,
const struct file_operations *f_ops, void *private_data,
const char *name);
int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
void *snd_lookup_oss_minor_data(unsigned int minor, int type);
......
......@@ -395,7 +395,7 @@ enum {
*/
struct rpc_filelist {
char *name;
struct file_operations *i_fop;
const struct file_operations *i_fop;
int mode;
};
......
......@@ -225,7 +225,7 @@ EXPORT_SYMBOL(rpc_print_iostats);
* Register/unregister RPC proc files
*/
static inline struct proc_dir_entry *
do_register(const char *name, void *data, struct file_operations *fops)
do_register(const char *name, void *data, const struct file_operations *fops)
{
struct proc_dir_entry *ent;
......@@ -253,7 +253,7 @@ rpc_proc_unregister(const char *name)
}
struct proc_dir_entry *
svc_proc_register(struct svc_stat *statp, struct file_operations *fops)
svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)
{
return do_register(statp->program->pg_name, statp, fops);
}
......
......@@ -223,7 +223,8 @@ int snd_card_disconnect(struct snd_card *card)
struct snd_monitor_file *mfile;
struct file *file;
struct snd_shutdown_f_ops *s_f_ops;
struct file_operations *f_ops, *old_f_ops;
struct file_operations *f_ops;
const struct file_operations *old_f_ops;
int err;
spin_lock(&card->files_lock);
......
......@@ -137,7 +137,7 @@ static int snd_open(struct inode *inode, struct file *file)
{
unsigned int minor = iminor(inode);
struct snd_minor *mptr = NULL;
struct file_operations *old_fops;
const struct file_operations *old_fops;
int err = 0;
if (minor >= ARRAY_SIZE(snd_minors))
......@@ -240,7 +240,7 @@ static int snd_kernel_minor(int type, struct snd_card *card, int dev)
* Retrurns zero if successful, or a negative error code on failure.
*/
int snd_register_device(int type, struct snd_card *card, int dev,
struct file_operations *f_ops, void *private_data,
const struct file_operations *f_ops, void *private_data,
const char *name)
{
int minor;
......
......@@ -95,7 +95,7 @@ static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev)
}
int snd_register_oss_device(int type, struct snd_card *card, int dev,
struct file_operations *f_ops, void *private_data,
const struct file_operations *f_ops, void *private_data,
const char *name)
{
int minor = snd_oss_kernel_minor(type, card, dev);
......
......@@ -53,7 +53,7 @@
struct sound_unit
{
int unit_minor;
struct file_operations *unit_fops;
const struct file_operations *unit_fops;
struct sound_unit *next;
char name[32];
};
......@@ -73,7 +73,7 @@ EXPORT_SYMBOL(sound_class);
* join into it. Called with the lock asserted
*/
static int __sound_insert_unit(struct sound_unit * s, struct sound_unit **list, struct file_operations *fops, int index, int low, int top)
static int __sound_insert_unit(struct sound_unit * s, struct sound_unit **list, const struct file_operations *fops, int index, int low, int top)
{
int n=low;
......@@ -153,7 +153,7 @@ static DEFINE_SPINLOCK(sound_loader_lock);
* list. Acquires locks as needed
*/
static int sound_insert_unit(struct sound_unit **list, struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode, struct device *dev)
static int sound_insert_unit(struct sound_unit **list, const struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode, struct device *dev)
{
struct sound_unit *s = kmalloc(sizeof(*s), GFP_KERNEL);
int r;
......@@ -237,7 +237,7 @@ static struct sound_unit *chains[SOUND_STEP];
* a negative error code is returned.
*/
int register_sound_special_device(struct file_operations *fops, int unit,
int register_sound_special_device(const struct file_operations *fops, int unit,
struct device *dev)
{
const int chain = unit % SOUND_STEP;
......@@ -301,7 +301,7 @@ int register_sound_special_device(struct file_operations *fops, int unit,
EXPORT_SYMBOL(register_sound_special_device);
int register_sound_special(struct file_operations *fops, int unit)
int register_sound_special(const struct file_operations *fops, int unit)
{
return register_sound_special_device(fops, unit, NULL);
}
......@@ -318,7 +318,7 @@ EXPORT_SYMBOL(register_sound_special);
* number is returned, on failure a negative error code is returned.
*/
int register_sound_mixer(struct file_operations *fops, int dev)
int register_sound_mixer(const struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[0], fops, dev, 0, 128,
"mixer", S_IRUSR | S_IWUSR, NULL);
......@@ -336,7 +336,7 @@ EXPORT_SYMBOL(register_sound_mixer);
* number is returned, on failure a negative error code is returned.
*/
int register_sound_midi(struct file_operations *fops, int dev)
int register_sound_midi(const struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[2], fops, dev, 2, 130,
"midi", S_IRUSR | S_IWUSR, NULL);
......@@ -362,7 +362,7 @@ EXPORT_SYMBOL(register_sound_midi);
* and will always allocate them as a matching pair - eg dsp3/audio3
*/
int register_sound_dsp(struct file_operations *fops, int dev)
int register_sound_dsp(const struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[3], fops, dev, 3, 131,
"dsp", S_IWUSR | S_IRUSR, NULL);
......@@ -381,7 +381,7 @@ EXPORT_SYMBOL(register_sound_dsp);
*/
int register_sound_synth(struct file_operations *fops, int dev)
int register_sound_synth(const struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[9], fops, dev, 9, 137,
"synth", S_IRUSR | S_IWUSR, NULL);
......@@ -501,7 +501,7 @@ int soundcore_open(struct inode *inode, struct file *file)
int chain;
int unit = iminor(inode);
struct sound_unit *s;
struct file_operations *new_fops = NULL;
const struct file_operations *new_fops = NULL;
chain=unit&0x0F;
if(chain==4 || chain==5) /* dsp/audio/dsp16 */
......@@ -540,7 +540,7 @@ int soundcore_open(struct inode *inode, struct file *file)
* switching ->f_op in the first place.
*/
int err = 0;
struct file_operations *old_fops = file->f_op;
const struct file_operations *old_fops = file->f_op;
file->f_op = new_fops;
spin_unlock(&sound_loader_lock);
if(file->f_op->open)
......
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