}
/*
- * ashmem_shrink - our cache shrinker, called from mm/vmscan.c :: shrink_slab
+ * ashmem_shrink - our cache shrinker, called from mm/vmscan.c
*
* 'nr_to_scan' is the number of objects to scan for freeing.
*
loff_t start = range->pgstart * PAGE_SIZE;
loff_t end = (range->pgend + 1) * PAGE_SIZE;
- do_fallocate(range->asma->file,
+ vfs_fallocate(range->asma->file,
FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
start, end - start);
range->purged = ASHMEM_WAS_PURGED;
.nr_to_scan = LONG_MAX,
};
ret = ashmem_shrink_count(&ashmem_shrinker, &sc);
- nodes_setall(sc.nodes_to_scan);
ashmem_shrink_scan(&ashmem_shrinker, &sc);
}
break;
return -EINVAL;
}
- return do_fallocate(filp, FALLOC_FL_KEEP_SIZE, sr.l_start, sr.l_len);
+ return vfs_fallocate(filp, FALLOC_FL_KEEP_SIZE, sr.l_start, sr.l_len);
}
static int file_ioctl(struct file *filp, unsigned int cmd,
return -EPERM;
/* If filesystem doesn't support freeze feature, return. */
- if (sb->s_op->freeze_fs == NULL)
+ if (sb->s_op->freeze_fs == NULL && sb->s_op->freeze_super == NULL)
return -EOPNOTSUPP;
/* Freeze */
+ if (sb->s_op->freeze_super)
+ return sb->s_op->freeze_super(sb);
return freeze_super(sb);
}
return -EPERM;
/* Thaw */
+ if (sb->s_op->thaw_super)
+ return sb->s_op->thaw_super(sb);
return thaw_super(sb);
}
#include <linux/ratelimit.h>
#include <linux/sunrpc/svcauth_gss.h>
#include <linux/sunrpc/addr.h>
-#include <linux/hash.h>
+#include <linux/jhash.h>
#include "xdr4.h"
#include "xdr4cb.h"
#include "vfs.h"
return x;
}
- static void nfsd4_free_file(struct nfs4_file *f)
+ static void nfsd4_free_file_rcu(struct rcu_head *rcu)
{
- kmem_cache_free(file_slab, f);
+ struct nfs4_file *fp = container_of(rcu, struct nfs4_file, fi_rcu);
+
+ kmem_cache_free(file_slab, fp);
}
static inline void
might_lock(&state_lock);
if (atomic_dec_and_lock(&fi->fi_ref, &state_lock)) {
- hlist_del(&fi->fi_hash);
+ hlist_del_rcu(&fi->fi_hash);
spin_unlock(&state_lock);
- nfsd4_free_file(fi);
+ WARN_ON_ONCE(!list_empty(&fi->fi_delegations));
+ call_rcu(&fi->fi_rcu, nfsd4_free_file_rcu);
}
}
}
spin_unlock(&blocked_delegations_lock);
}
- hash = arch_fast_hash(&fh->fh_base, fh->fh_size, 0);
+ hash = jhash(&fh->fh_base, fh->fh_size, 0);
if (test_bit(hash&255, bd->set[0]) &&
test_bit((hash>>8)&255, bd->set[0]) &&
test_bit((hash>>16)&255, bd->set[0]))
u32 hash;
struct bloom_pair *bd = &blocked_delegations;
- hash = arch_fast_hash(&fh->fh_base, fh->fh_size, 0);
+ hash = jhash(&fh->fh_base, fh->fh_size, 0);
spin_lock(&blocked_delegations_lock);
__set_bit(hash&255, bd->set[bd->new]);
list_add(&new->se_perclnt, &clp->cl_sessions);
spin_unlock(&clp->cl_lock);
- if (cses->flags & SESSION4_BACK_CHAN) {
+ {
struct sockaddr *sa = svc_addr(rqstp);
/*
* This is a little silly; with sessions there's no real
return 0;
}
- static long long
+ static int
compare_blob(const struct xdr_netobj *o1, const struct xdr_netobj *o2)
{
- long long res;
-
- res = o1->len - o2->len;
- if (res)
- return res;
- return (long long)memcmp(o1->data, o2->data, o1->len);
+ if (o1->len < o2->len)
+ return -1;
+ if (o1->len > o2->len)
+ return 1;
+ return memcmp(o1->data, o2->data, o1->len);
}
static int same_name(const char *n1, const char *n2)
static struct nfs4_client *
find_clp_in_name_tree(struct xdr_netobj *name, struct rb_root *root)
{
- long long cmp;
+ int cmp;
struct rb_node *node = root->rb_node;
struct nfs4_client *clp;
}
/* OPEN Share state helper functions */
- static void nfsd4_init_file(struct nfs4_file *fp, struct knfsd_fh *fh)
+ static void nfsd4_init_file(struct knfsd_fh *fh, unsigned int hashval,
+ struct nfs4_file *fp)
{
- unsigned int hashval = file_hashval(fh);
-
lockdep_assert_held(&state_lock);
atomic_set(&fp->fi_ref, 1);
fp->fi_share_deny = 0;
memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
memset(fp->fi_access, 0, sizeof(fp->fi_access));
- hlist_add_head(&fp->fi_hash, &file_hashtbl[hashval]);
+ hlist_add_head_rcu(&fp->fi_hash, &file_hashtbl[hashval]);
}
void
/* search file_hashtbl[] for file */
static struct nfs4_file *
- find_file_locked(struct knfsd_fh *fh)
+ find_file_locked(struct knfsd_fh *fh, unsigned int hashval)
{
- unsigned int hashval = file_hashval(fh);
struct nfs4_file *fp;
- lockdep_assert_held(&state_lock);
-
- hlist_for_each_entry(fp, &file_hashtbl[hashval], fi_hash) {
+ hlist_for_each_entry_rcu(fp, &file_hashtbl[hashval], fi_hash) {
if (nfsd_fh_match(&fp->fi_fhandle, fh)) {
- get_nfs4_file(fp);
- return fp;
+ if (atomic_inc_not_zero(&fp->fi_ref))
+ return fp;
}
}
return NULL;
find_file(struct knfsd_fh *fh)
{
struct nfs4_file *fp;
+ unsigned int hashval = file_hashval(fh);
- spin_lock(&state_lock);
- fp = find_file_locked(fh);
- spin_unlock(&state_lock);
+ rcu_read_lock();
+ fp = find_file_locked(fh, hashval);
+ rcu_read_unlock();
return fp;
}
find_or_add_file(struct nfs4_file *new, struct knfsd_fh *fh)
{
struct nfs4_file *fp;
+ unsigned int hashval = file_hashval(fh);
+
+ rcu_read_lock();
+ fp = find_file_locked(fh, hashval);
+ rcu_read_unlock();
+ if (fp)
+ return fp;
spin_lock(&state_lock);
- fp = find_file_locked(fh);
- if (fp == NULL) {
- nfsd4_init_file(new, fh);
+ fp = find_file_locked(fh, hashval);
+ if (likely(fp == NULL)) {
+ nfsd4_init_file(fh, hashval, new);
fp = new;
}
spin_unlock(&state_lock);
nfs4_put_stateowner(so);
}
if (open->op_file)
- nfsd4_free_file(open->op_file);
+ kmem_cache_free(file_slab, open->op_file);
if (open->op_stp)
nfs4_put_stid(&open->op_stp->st_stid);
}
DECODE_TAIL;
}
+ static __be32
+ nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp,
+ struct nfsd4_fallocate *fallocate)
+ {
+ DECODE_HEAD;
+
+ status = nfsd4_decode_stateid(argp, &fallocate->falloc_stateid);
+ if (status)
+ return status;
+
+ READ_BUF(16);
+ p = xdr_decode_hyper(p, &fallocate->falloc_offset);
+ xdr_decode_hyper(p, &fallocate->falloc_length);
+
+ DECODE_TAIL;
+ }
+
static __be32
nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek)
{
[OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete,
/* new operations for NFSv4.2 */
- [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate,
[OP_COPY] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate,
[OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp,
argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE;
if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack)
- argp->rqstp->rq_splice_ok = false;
+ clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags);
DECODE_TAIL;
}
}
else
end++;
+ if (found_esc)
+ end = next;
+
str = end;
}
- pathlen = htonl(xdr->buf->len - pathlen_offset);
+ pathlen = htonl(count);
write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4);
return 0;
}
goto out_free;
}
p = xdr_encode_opaque(p, dentry->d_name.name, len);
- dprintk("/%s", dentry->d_name.name);
+ dprintk("/%pd", dentry);
spin_unlock(&dentry->d_lock);
dput(dentry);
ncomponents--;
p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */
if (!p) {
- WARN_ON_ONCE(resp->rqstp->rq_splice_ok);
+ WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags));
return nfserr_resource;
}
- if (resp->xdr.buf->page_len && resp->rqstp->rq_splice_ok) {
+ if (resp->xdr.buf->page_len && test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) {
WARN_ON_ONCE(1);
return nfserr_resource;
}
goto err_truncate;
}
- if (file->f_op->splice_read && resp->rqstp->rq_splice_ok)
+ if (file->f_op->splice_read && test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags))
err = nfsd4_encode_splice_read(resp, read, file, maxcount);
else
err = nfsd4_encode_readv(resp, read, file, maxcount);
* payload - write methods
*/
+static inline struct net *netns(struct file *file)
+{
+ return file_inode(file)->i_sb->s_fs_info;
+}
/**
* write_unlock_ip - Release all locks used by a client
struct sockaddr *sap = (struct sockaddr *)&address;
size_t salen = sizeof(address);
char *fo_path;
- struct net *net = file->f_dentry->d_sb->s_fs_info;
+ struct net *net = netns(file);
/* sanity check */
if (size == 0)
int len;
struct auth_domain *dom;
struct knfsd_fh fh;
- struct net *net = file->f_dentry->d_sb->s_fs_info;
if (size == 0)
return -EINVAL;
if (!dom)
return -ENOMEM;
- len = exp_rootfh(net, dom, path, &fh, maxsize);
+ len = exp_rootfh(netns(file), dom, path, &fh, maxsize);
auth_domain_put(dom);
if (len)
return len;
{
char *mesg = buf;
int rv;
- struct net *net = file->f_dentry->d_sb->s_fs_info;
+ struct net *net = netns(file);
if (size > 0) {
int newthreads;
int len;
int npools;
int *nthreads;
- struct net *net = file->f_dentry->d_sb->s_fs_info;
+ struct net *net = netns(file);
mutex_lock(&nfsd_mutex);
npools = nfsd_nrpools(net);
unsigned minor;
ssize_t tlen = 0;
char *sep;
- struct net *net = file->f_dentry->d_sb->s_fs_info;
- struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
if (size>0) {
if (nn->nfsd_serv)
num);
sep = " ";
- if (len > remaining)
+ if (len >= remaining)
break;
remaining -= len;
buf += len;
'+' : '-',
minor);
- if (len > remaining)
+ if (len >= remaining)
break;
remaining -= len;
buf += len;
}
len = snprintf(buf, remaining, "\n");
- if (len > remaining)
+ if (len >= remaining)
return -EINVAL;
return tlen + len;
}
static ssize_t write_ports(struct file *file, char *buf, size_t size)
{
ssize_t rv;
- struct net *net = file->f_dentry->d_sb->s_fs_info;
mutex_lock(&nfsd_mutex);
- rv = __write_ports(file, buf, size, net);
+ rv = __write_ports(file, buf, size, netns(file));
mutex_unlock(&nfsd_mutex);
return rv;
}
static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
- struct net *net = file->f_dentry->d_sb->s_fs_info;
- struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
if (size > 0) {
int bsize;
static ssize_t write_maxconn(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
- struct net *net = file->f_dentry->d_sb->s_fs_info;
- struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
unsigned int maxconn = nn->max_connections;
if (size > 0) {
*/
static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
{
- struct net *net = file->f_dentry->d_sb->s_fs_info;
- struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
return nfsd4_write_time(file, buf, size, &nn->nfsd4_lease, nn);
}
*/
static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
{
- struct net *net = file->f_dentry->d_sb->s_fs_info;
- struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
return nfsd4_write_time(file, buf, size, &nn->nfsd4_grace, nn);
}
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
{
ssize_t rv;
- struct net *net = file->f_dentry->d_sb->s_fs_info;
- struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
mutex_lock(&nfsd_mutex);
rv = __write_recoverydir(file, buf, size, nn);
*/
static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size)
{
- struct net *net = file->f_dentry->d_sb->s_fs_info;
- struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
if (size > 0) {
switch(buf[0]) {
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/splice.h>
+ #include <linux/falloc.h>
#include <linux/fcntl.h>
#include <linux/namei.h>
#include <linux/delay.h>
}
#endif
+ __be32 nfsd4_vfs_fallocate(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ struct file *file, loff_t offset, loff_t len,
+ int flags)
+ {
+ __be32 err;
+ int error;
+
+ if (!S_ISREG(file_inode(file)->i_mode))
+ return nfserr_inval;
+
+ err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry, NFSD_MAY_WRITE);
+ if (err)
+ return err;
+
+ error = vfs_fallocate(file, flags, offset, len);
+ if (!error)
+ error = commit_metadata(fhp);
+
+ return nfserrno(error);
+ }
#endif /* defined(CONFIG_NFSD_V4) */
#ifdef CONFIG_NFSD_V3
nfsd_vfs_read(struct svc_rqst *rqstp, struct file *file,
loff_t offset, struct kvec *vec, int vlen, unsigned long *count)
{
- if (file->f_op->splice_read && rqstp->rq_splice_ok)
+ if (file->f_op->splice_read && test_bit(RQ_SPLICE_OK, &rqstp->rq_flags))
return nfsd_splice_read(rqstp, file, offset, count);
else
return nfsd_readv(file, offset, vec, vlen, count);
unsigned long *cnt, int *stablep)
{
struct svc_export *exp;
- struct dentry *dentry;
struct inode *inode;
mm_segment_t oldfs;
__be32 err = 0;
int stable = *stablep;
int use_wgather;
loff_t pos = offset;
+ loff_t end = LLONG_MAX;
unsigned int pflags = current->flags;
- if (rqstp->rq_local)
+ if (test_bit(RQ_LOCAL, &rqstp->rq_flags))
/*
* We want less throttling in balance_dirty_pages()
* and shrink_inactive_list() so that nfs to
*/
current->flags |= PF_LESS_THROTTLE;
- dentry = file->f_path.dentry;
- inode = dentry->d_inode;
+ inode = file_inode(file);
exp = fhp->fh_export;
use_wgather = (rqstp->rq_vers == 2) && EX_WGATHER(exp);
fsnotify_modify(file);
if (stable) {
- if (use_wgather)
+ if (use_wgather) {
host_err = wait_for_concurrent_writes(file);
- else
- host_err = vfs_fsync_range(file, offset, offset+*cnt, 0);
+ } else {
+ if (*cnt)
+ end = offset + *cnt - 1;
+ host_err = vfs_fsync_range(file, offset, end, 0);
+ }
}
out_nfserr:
err = 0;
else
err = nfserrno(host_err);
- if (rqstp->rq_local)
+ if (test_bit(RQ_LOCAL, &rqstp->rq_flags))
tsk_restore_flags(current, pflags, PF_LESS_THROTTLE);
return err;
}
int full;
};
-static int nfsd_buffered_filldir(void *__buf, const char *name, int namlen,
- loff_t offset, u64 ino, unsigned int d_type)
+static int nfsd_buffered_filldir(struct dir_context *ctx, const char *name,
+ int namlen, loff_t offset, u64 ino,
+ unsigned int d_type)
{
- struct readdir_data *buf = __buf;
+ struct readdir_data *buf =
+ container_of(ctx, struct readdir_data, ctx);
struct buffered_dirent *de = (void *)(buf->dirent + buf->used);
unsigned int reclen;
return 0;
}
-static __be32 nfsd_buffered_readdir(struct file *file, filldir_t func,
+static __be32 nfsd_buffered_readdir(struct file *file, nfsd_filldir_t func,
struct readdir_cd *cdp, loff_t *offsetp)
{
struct buffered_dirent *de;
*/
__be32
nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
- struct readdir_cd *cdp, filldir_t func)
+ struct readdir_cd *cdp, nfsd_filldir_t func)
{
__be32 err;
struct file *file;
/*
* Callback function for readdir
*/
-typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int);
+typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
/* nfsd/vfs.c */
int nfsd_racache_init(int);
#ifdef CONFIG_NFSD_V4
__be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *,
struct xdr_netobj *);
+ __be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *,
+ struct file *, loff_t, loff_t, int);
#endif /* CONFIG_NFSD_V4 */
__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
char *name, int len, struct iattr *attrs,
__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
char *name, int len);
__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
- loff_t *, struct readdir_cd *, filldir_t);
+ loff_t *, struct readdir_cd *, nfsd_filldir_t);
__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
struct kstatfs *, int access);
#endif /* BITS_PER_LONG == 32 */
- int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
+ int vfs_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
{
struct inode *inode = file_inode(file);
long ret;
sb_start_write(inode->i_sb);
ret = file->f_op->fallocate(file, mode, offset, len);
+
+ /*
+ * Create inotify and fanotify events.
+ *
+ * To keep the logic simple always create events if fallocate succeeds.
+ * This implies that events are even created if the file size remains
+ * unchanged, e.g. when using flag FALLOC_FL_KEEP_SIZE.
+ */
+ if (ret == 0)
+ fsnotify_modify(file);
+
sb_end_write(inode->i_sb);
return ret;
}
+ EXPORT_SYMBOL_GPL(vfs_fallocate);
SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
{
int error = -EBADF;
if (f.file) {
- error = do_fallocate(f.file, mode, offset, len);
+ error = vfs_fallocate(f.file, mode, offset, len);
fdput(f);
}
return error;
int err = -EBADF;
if (f.file) {
- audit_inode(NULL, f.file->f_path.dentry, 0);
+ audit_file(f.file);
err = chmod_common(&f.file->f_path, mode);
fdput(f);
}
error = mnt_want_write_file(f.file);
if (error)
goto out_fput;
- audit_inode(NULL, f.file->f_path.dentry, 0);
+ audit_file(f.file);
error = chown_common(&f.file->f_path, user, group);
mnt_drop_write_file(f.file);
out_fput:
#include <linux/pid.h>
#include <linux/bug.h>
#include <linux/mutex.h>
+#include <linux/rwsem.h>
#include <linux/capability.h>
#include <linux/semaphore.h>
#include <linux/fiemap.h>
atomic_t i_mmap_writable;/* count VM_SHARED mappings */
struct rb_root i_mmap; /* tree of private and shared mappings */
struct list_head i_mmap_nonlinear;/*list VM_NONLINEAR mappings */
- struct mutex i_mmap_mutex; /* protect tree, count, list */
+ struct rw_semaphore i_mmap_rwsem; /* protect tree, count, list */
/* Protected by tree_lock together with the radix tree */
unsigned long nrpages; /* number of total pages */
unsigned long nrshadows; /* number of shadow entries */
int mapping_tagged(struct address_space *mapping, int tag);
+static inline void i_mmap_lock_write(struct address_space *mapping)
+{
+ down_write(&mapping->i_mmap_rwsem);
+}
+
+static inline void i_mmap_unlock_write(struct address_space *mapping)
+{
+ up_write(&mapping->i_mmap_rwsem);
+}
+
+static inline void i_mmap_lock_read(struct address_space *mapping)
+{
+ down_read(&mapping->i_mmap_rwsem);
+}
+
+static inline void i_mmap_unlock_read(struct address_space *mapping)
+{
+ up_read(&mapping->i_mmap_rwsem);
+}
+
/*
* Might pages of this file be mapped into userspace?
*/
const struct file_operations *i_fop; /* former ->i_op->default_file_ops */
struct file_lock *i_flock;
struct address_space i_data;
-#ifdef CONFIG_QUOTA
- struct dquot *i_dquot[MAXQUOTAS];
-#endif
struct list_head i_devices;
union {
struct pipe_inode_info *i_pipe;
struct rcu_head fu_rcuhead;
} f_u;
struct path f_path;
-#define f_dentry f_path.dentry
struct inode *f_inode; /* cached value */
const struct file_operations *f_op;
struct backing_dev_info *s_bdi;
struct mtd_info *s_mtd;
struct hlist_node s_instances;
+ unsigned int s_quota_types; /* Bitmask of supported quota types */
struct quota_info s_dquot; /* Diskquota specific options */
struct sb_writers s_writers;
* This allows the kernel to read directories into kernel space or
* to have different dirent layouts depending on the binary type.
*/
-typedef int (*filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
+struct dir_context;
+typedef int (*filldir_t)(struct dir_context *, const char *, int, loff_t, u64,
+ unsigned);
+
struct dir_context {
const filldir_t actor;
loff_t pos;
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
+ void (*mremap)(struct file *, struct vm_area_struct *);
int (*open) (struct inode *, struct file *);
int (*flush) (struct file *, fl_owner_t id);
int (*release) (struct inode *, struct file *);
int (*setlease)(struct file *, long, struct file_lock **, void **);
long (*fallocate)(struct file *file, int mode, loff_t offset,
loff_t len);
- int (*show_fdinfo)(struct seq_file *m, struct file *f);
+ void (*show_fdinfo)(struct seq_file *m, struct file *f);
};
struct inode_operations {
struct iovec *fast_pointer,
struct iovec **ret_pointer);
+extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *);
extern ssize_t vfs_readv(struct file *, const struct iovec __user *,
void (*evict_inode) (struct inode *);
void (*put_super) (struct super_block *);
int (*sync_fs)(struct super_block *sb, int wait);
+ int (*freeze_super) (struct super_block *);
int (*freeze_fs) (struct super_block *);
+ int (*thaw_super) (struct super_block *);
int (*unfreeze_fs) (struct super_block *);
int (*statfs) (struct dentry *, struct kstatfs *);
int (*remount_fs) (struct super_block *, int *, char *);
#ifdef CONFIG_QUOTA
ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t);
ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t);
+ struct dquot **(*get_dquots)(struct inode *);
#endif
int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t);
long (*nr_cached_objects)(struct super_block *, int);
extern long vfs_truncate(struct path *, loff_t);
extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,
struct file *filp);
- extern int do_fallocate(struct file *file, int mode, loff_t offset,
+ extern int vfs_fallocate(struct file *file, int mode, loff_t offset,
loff_t len);
extern long do_sys_open(int dfd, const char __user *filename, int flags,
umode_t mode);
extern struct file * dentry_open(const struct path *, int, const struct cred *);
extern int filp_close(struct file *, fl_owner_t id);
+extern struct filename *getname_flags(const char __user *, int, int *);
extern struct filename *getname(const char __user *);
extern struct filename *getname_kernel(const char *);
inode->i_flags |= S_NOSEC;
}
+static inline bool is_root_inode(struct inode *inode)
+{
+ return inode == inode->i_sb->s_root->d_inode;
+}
+
static inline bool dir_emit(struct dir_context *ctx,
const char *name, int namelen,
u64 ino, unsigned type)
projects / cascardo / linux.git / commitdiff