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-rw-r--r--fs/9p/vfs_inode.c7
-rw-r--r--fs/9p/vfs_inode_dotl.c7
-rw-r--r--fs/aio.c24
-rw-r--r--fs/anon_inodes.c30
-rw-r--r--fs/bad_inode.c2
-rw-r--r--fs/binfmt_misc.c2
-rw-r--r--fs/ceph/file.c7
-rw-r--r--fs/ceph/super.h3
-rw-r--r--fs/cifs/cifsfs.h3
-rw-r--r--fs/cifs/dir.c7
-rw-r--r--fs/file_table.c85
-rw-r--r--fs/fuse/dir.c10
-rw-r--r--fs/gfs2/inode.c32
-rw-r--r--fs/hugetlbfs/inode.c54
-rw-r--r--fs/internal.h5
-rw-r--r--fs/namei.c225
-rw-r--r--fs/nfs/dir.c14
-rw-r--r--fs/nfs/nfs4_fs.h2
-rw-r--r--fs/nfs/nfs4proc.c2
-rw-r--r--fs/nfsd/vfs.c2
-rw-r--r--fs/open.c88
-rw-r--r--fs/pipe.c43
22 files changed, 252 insertions, 402 deletions
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 42e102e2e74a..85ff859d3af5 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -859,8 +859,7 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
static int
v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry,
- struct file *file, unsigned flags, umode_t mode,
- int *opened)
+ struct file *file, unsigned flags, umode_t mode)
{
int err;
u32 perm;
@@ -917,7 +916,7 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry,
v9inode->writeback_fid = (void *) inode_fid;
}
mutex_unlock(&v9inode->v_mutex);
- err = finish_open(file, dentry, generic_file_open, opened);
+ err = finish_open(file, dentry, generic_file_open);
if (err)
goto error;
@@ -925,7 +924,7 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry,
if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
v9fs_cache_inode_set_cookie(d_inode(dentry), file);
- *opened |= FILE_CREATED;
+ file->f_mode |= FMODE_CREATED;
out:
dput(res);
return err;
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index 7f6ae21a27b3..4823e1c46999 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -241,8 +241,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
static int
v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
- struct file *file, unsigned flags, umode_t omode,
- int *opened)
+ struct file *file, unsigned flags, umode_t omode)
{
int err = 0;
kgid_t gid;
@@ -352,13 +351,13 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
}
mutex_unlock(&v9inode->v_mutex);
/* Since we are opening a file, assign the open fid to the file */
- err = finish_open(file, dentry, generic_file_open, opened);
+ err = finish_open(file, dentry, generic_file_open);
if (err)
goto err_clunk_old_fid;
file->private_data = ofid;
if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
v9fs_cache_inode_set_cookie(inode, file);
- *opened |= FILE_CREATED;
+ file->f_mode |= FMODE_CREATED;
out:
v9fs_put_acl(dacl, pacl);
dput(res);
diff --git a/fs/aio.c b/fs/aio.c
index 27454594e37a..16f1f25bfd89 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -202,9 +202,7 @@ static const struct address_space_operations aio_ctx_aops;
static struct file *aio_private_file(struct kioctx *ctx, loff_t nr_pages)
{
- struct qstr this = QSTR_INIT("[aio]", 5);
struct file *file;
- struct path path;
struct inode *inode = alloc_anon_inode(aio_mnt->mnt_sb);
if (IS_ERR(inode))
return ERR_CAST(inode);
@@ -213,31 +211,17 @@ static struct file *aio_private_file(struct kioctx *ctx, loff_t nr_pages)
inode->i_mapping->private_data = ctx;
inode->i_size = PAGE_SIZE * nr_pages;
- path.dentry = d_alloc_pseudo(aio_mnt->mnt_sb, &this);
- if (!path.dentry) {
+ file = alloc_file_pseudo(inode, aio_mnt, "[aio]",
+ O_RDWR, &aio_ring_fops);
+ if (IS_ERR(file))
iput(inode);
- return ERR_PTR(-ENOMEM);
- }
- path.mnt = mntget(aio_mnt);
-
- d_instantiate(path.dentry, inode);
- file = alloc_file(&path, FMODE_READ | FMODE_WRITE, &aio_ring_fops);
- if (IS_ERR(file)) {
- path_put(&path);
- return file;
- }
-
- file->f_flags = O_RDWR;
return file;
}
static struct dentry *aio_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
{
- static const struct dentry_operations ops = {
- .d_dname = simple_dname,
- };
- struct dentry *root = mount_pseudo(fs_type, "aio:", NULL, &ops,
+ struct dentry *root = mount_pseudo(fs_type, "aio:", NULL, NULL,
AIO_RING_MAGIC);
if (!IS_ERR(root))
diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 3168ee4e77f4..91262c34b797 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -71,8 +71,6 @@ struct file *anon_inode_getfile(const char *name,
const struct file_operations *fops,
void *priv, int flags)
{
- struct qstr this;
- struct path path;
struct file *file;
if (IS_ERR(anon_inode_inode))
@@ -82,39 +80,23 @@ struct file *anon_inode_getfile(const char *name,
return ERR_PTR(-ENOENT);
/*
- * Link the inode to a directory entry by creating a unique name
- * using the inode sequence number.
- */
- file = ERR_PTR(-ENOMEM);
- this.name = name;
- this.len = strlen(name);
- this.hash = 0;
- path.dentry = d_alloc_pseudo(anon_inode_mnt->mnt_sb, &this);
- if (!path.dentry)
- goto err_module;
-
- path.mnt = mntget(anon_inode_mnt);
- /*
* We know the anon_inode inode count is always greater than zero,
* so ihold() is safe.
*/
ihold(anon_inode_inode);
-
- d_instantiate(path.dentry, anon_inode_inode);
-
- file = alloc_file(&path, OPEN_FMODE(flags), fops);
+ file = alloc_file_pseudo(anon_inode_inode, anon_inode_mnt, name,
+ flags & (O_ACCMODE | O_NONBLOCK), fops);
if (IS_ERR(file))
- goto err_dput;
+ goto err;
+
file->f_mapping = anon_inode_inode->i_mapping;
- file->f_flags = flags & (O_ACCMODE | O_NONBLOCK);
file->private_data = priv;
return file;
-err_dput:
- path_put(&path);
-err_module:
+err:
+ iput(anon_inode_inode);
module_put(fops->owner);
return file;
}
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index 125e8bbd22a2..8035d2a44561 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -134,7 +134,7 @@ static int bad_inode_update_time(struct inode *inode, struct timespec64 *time,
static int bad_inode_atomic_open(struct inode *inode, struct dentry *dentry,
struct file *file, unsigned int open_flag,
- umode_t create_mode, int *opened)
+ umode_t create_mode)
{
return -EIO;
}
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index 4b5fff31ef27..aa4a7a23ff99 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -205,7 +205,7 @@ static int load_misc_binary(struct linux_binprm *bprm)
goto error;
if (fmt->flags & MISC_FMT_OPEN_FILE) {
- interp_file = filp_clone_open(fmt->interp_file);
+ interp_file = file_clone_open(fmt->interp_file);
if (!IS_ERR(interp_file))
deny_write_access(interp_file);
} else {
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index ad0bed99b1d5..e2679e8a2535 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -429,8 +429,7 @@ out:
* file or symlink, return 1 so the VFS can retry.
*/
int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
- struct file *file, unsigned flags, umode_t mode,
- int *opened)
+ struct file *file, unsigned flags, umode_t mode)
{
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
@@ -507,9 +506,9 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
dout("atomic_open finish_open on dn %p\n", dn);
if (req->r_op == CEPH_MDS_OP_CREATE && req->r_reply_info.has_create_ino) {
ceph_init_inode_acls(d_inode(dentry), &acls);
- *opened |= FILE_CREATED;
+ file->f_mode |= FMODE_CREATED;
}
- err = finish_open(file, dentry, ceph_open, opened);
+ err = finish_open(file, dentry, ceph_open);
}
out_req:
if (!req->r_err && req->r_target_inode)
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index a7077a0c989f..971328b99ede 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -1025,8 +1025,7 @@ extern const struct file_operations ceph_file_fops;
extern int ceph_renew_caps(struct inode *inode);
extern int ceph_open(struct inode *inode, struct file *file);
extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
- struct file *file, unsigned flags, umode_t mode,
- int *opened);
+ struct file *file, unsigned flags, umode_t mode);
extern int ceph_release(struct inode *inode, struct file *filp);
extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page,
char *data, size_t len);
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 5f0231803431..f3a78efc3109 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -65,8 +65,7 @@ extern struct inode *cifs_root_iget(struct super_block *);
extern int cifs_create(struct inode *, struct dentry *, umode_t,
bool excl);
extern int cifs_atomic_open(struct inode *, struct dentry *,
- struct file *, unsigned, umode_t,
- int *);
+ struct file *, unsigned, umode_t);
extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
unsigned int);
extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index ddae52bd1993..3713d22b95a7 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -465,8 +465,7 @@ out_err:
int
cifs_atomic_open(struct inode *inode, struct dentry *direntry,
- struct file *file, unsigned oflags, umode_t mode,
- int *opened)
+ struct file *file, unsigned oflags, umode_t mode)
{
int rc;
unsigned int xid;
@@ -539,9 +538,9 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
}
if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
- *opened |= FILE_CREATED;
+ file->f_mode |= FMODE_CREATED;
- rc = finish_open(file, direntry, generic_file_open, opened);
+ rc = finish_open(file, direntry, generic_file_open);
if (rc) {
if (server->ops->close)
server->ops->close(xid, tcon, &fid);
diff --git a/fs/file_table.c b/fs/file_table.c
index 7ec0b3e5f05d..d6eccd04d703 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -51,6 +51,7 @@ static void file_free_rcu(struct rcu_head *head)
static inline void file_free(struct file *f)
{
+ security_file_free(f);
percpu_counter_dec(&nr_files);
call_rcu(&f->f_u.fu_rcuhead, file_free_rcu);
}
@@ -100,9 +101,8 @@ int proc_nr_files(struct ctl_table *table, int write,
* done, you will imbalance int the mount's writer count
* and a warning at __fput() time.
*/
-struct file *get_empty_filp(void)
+struct file *alloc_empty_file(int flags, const struct cred *cred)
{
- const struct cred *cred = current_cred();
static long old_max;
struct file *f;
int error;
@@ -123,11 +123,10 @@ struct file *get_empty_filp(void)
if (unlikely(!f))
return ERR_PTR(-ENOMEM);
- percpu_counter_inc(&nr_files);
f->f_cred = get_cred(cred);
error = security_file_alloc(f);
if (unlikely(error)) {
- file_free(f);
+ file_free_rcu(&f->f_u.fu_rcuhead);
return ERR_PTR(error);
}
@@ -136,7 +135,10 @@ struct file *get_empty_filp(void)
spin_lock_init(&f->f_lock);
mutex_init(&f->f_pos_lock);
eventpoll_init_file(f);
+ f->f_flags = flags;
+ f->f_mode = OPEN_FMODE(flags);
/* f->f_version: 0 */
+ percpu_counter_inc(&nr_files);
return f;
over:
@@ -152,15 +154,15 @@ over:
* alloc_file - allocate and initialize a 'struct file'
*
* @path: the (dentry, vfsmount) pair for the new file
- * @mode: the mode with which the new file will be opened
+ * @flags: O_... flags with which the new file will be opened
* @fop: the 'struct file_operations' for the new file
*/
-struct file *alloc_file(const struct path *path, fmode_t mode,
+static struct file *alloc_file(const struct path *path, int flags,
const struct file_operations *fop)
{
struct file *file;
- file = get_empty_filp();
+ file = alloc_empty_file(flags, current_cred());
if (IS_ERR(file))
return file;
@@ -168,19 +170,56 @@ struct file *alloc_file(const struct path *path, fmode_t mode,
file->f_inode = path->dentry->d_inode;
file->f_mapping = path->dentry->d_inode->i_mapping;
file->f_wb_err = filemap_sample_wb_err(file->f_mapping);
- if ((mode & FMODE_READ) &&
+ if ((file->f_mode & FMODE_READ) &&
likely(fop->read || fop->read_iter))
- mode |= FMODE_CAN_READ;
- if ((mode & FMODE_WRITE) &&
+ file->f_mode |= FMODE_CAN_READ;
+ if ((file->f_mode & FMODE_WRITE) &&
likely(fop->write || fop->write_iter))
- mode |= FMODE_CAN_WRITE;
- file->f_mode = mode;
+ file->f_mode |= FMODE_CAN_WRITE;
+ file->f_mode |= FMODE_OPENED;
file->f_op = fop;
- if ((mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
+ if ((file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
i_readcount_inc(path->dentry->d_inode);
return file;
}
-EXPORT_SYMBOL(alloc_file);
+
+struct file *alloc_file_pseudo(struct inode *inode, struct vfsmount *mnt,
+ const char *name, int flags,
+ const struct file_operations *fops)
+{
+ static const struct dentry_operations anon_ops = {
+ .d_dname = simple_dname
+ };
+ struct qstr this = QSTR_INIT(name, strlen(name));
+ struct path path;
+ struct file *file;
+
+ path.dentry = d_alloc_pseudo(mnt->mnt_sb, &this);
+ if (!path.dentry)
+ return ERR_PTR(-ENOMEM);
+ if (!mnt->mnt_sb->s_d_op)
+ d_set_d_op(path.dentry, &anon_ops);
+ path.mnt = mntget(mnt);
+ d_instantiate(path.dentry, inode);
+ file = alloc_file(&path, flags, fops);
+ if (IS_ERR(file)) {
+ ihold(inode);
+ path_put(&path);
+ }
+ return file;
+}
+EXPORT_SYMBOL(alloc_file_pseudo);
+
+struct file *alloc_file_clone(struct file *base, int flags,
+ const struct file_operations *fops)
+{
+ struct file *f = alloc_file(&base->f_path, flags, fops);
+ if (!IS_ERR(f)) {
+ path_get(&f->f_path);
+ f->f_mapping = base->f_mapping;
+ }
+ return f;
+}
/* the real guts of fput() - releasing the last reference to file
*/
@@ -190,6 +229,9 @@ static void __fput(struct file *file)
struct vfsmount *mnt = file->f_path.mnt;
struct inode *inode = file->f_inode;
+ if (unlikely(!(file->f_mode & FMODE_OPENED)))
+ goto out;
+
might_sleep();
fsnotify_close(file);
@@ -207,7 +249,6 @@ static void __fput(struct file *file)
}
if (file->f_op->release)
file->f_op->release(inode, file);
- security_file_free(file);
if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL &&
!(file->f_mode & FMODE_PATH))) {
cdev_put(inode->i_cdev);
@@ -220,12 +261,10 @@ static void __fput(struct file *file)
put_write_access(inode);
__mnt_drop_write(mnt);
}
- file->f_path.dentry = NULL;
- file->f_path.mnt = NULL;
- file->f_inode = NULL;
- file_free(file);
dput(dentry);
mntput(mnt);
+out:
+ file_free(file);
}
static LLIST_HEAD(delayed_fput_list);
@@ -300,14 +339,6 @@ void __fput_sync(struct file *file)
EXPORT_SYMBOL(fput);
-void put_filp(struct file *file)
-{
- if (atomic_long_dec_and_test(&file->f_count)) {
- security_file_free(file);
- file_free(file);
- }
-}
-
void __init files_init(void)
{
filp_cachep = kmem_cache_create("filp", sizeof(struct file), 0,
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 56231b31f806..c979329311c8 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -399,7 +399,7 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
*/
static int fuse_create_open(struct inode *dir, struct dentry *entry,
struct file *file, unsigned flags,
- umode_t mode, int *opened)
+ umode_t mode)
{
int err;
struct inode *inode;
@@ -469,7 +469,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry,
d_instantiate(entry, inode);
fuse_change_entry_timeout(entry, &outentry);
fuse_invalidate_attr(dir);
- err = finish_open(file, entry, generic_file_open, opened);
+ err = finish_open(file, entry, generic_file_open);
if (err) {
fuse_sync_release(ff, flags);
} else {
@@ -489,7 +489,7 @@ out_err:
static int fuse_mknod(struct inode *, struct dentry *, umode_t, dev_t);
static int fuse_atomic_open(struct inode *dir, struct dentry *entry,
struct file *file, unsigned flags,
- umode_t mode, int *opened)
+ umode_t mode)
{
int err;
struct fuse_conn *fc = get_fuse_conn(dir);
@@ -508,12 +508,12 @@ static int fuse_atomic_open(struct inode *dir, struct dentry *entry,
goto no_open;
/* Only creates */
- *opened |= FILE_CREATED;
+ file->f_mode |= FMODE_CREATED;
if (fc->no_create)
goto mknod;
- err = fuse_create_open(dir, entry, file, flags, mode, opened);
+ err = fuse_create_open(dir, entry, file, flags, mode);
if (err == -ENOSYS) {
fc->no_create = 1;
goto mknod;
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index feda55f67050..648f0ca1ad57 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -580,7 +580,7 @@ static int gfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
struct file *file,
umode_t mode, dev_t dev, const char *symname,
- unsigned int size, int excl, int *opened)
+ unsigned int size, int excl)
{
const struct qstr *name = &dentry->d_name;
struct posix_acl *default_acl, *acl;
@@ -626,7 +626,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
error = 0;
if (file) {
if (S_ISREG(inode->i_mode))
- error = finish_open(file, dentry, gfs2_open_common, opened);
+ error = finish_open(file, dentry, gfs2_open_common);
else
error = finish_no_open(file, NULL);
}
@@ -767,8 +767,8 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
mark_inode_dirty(inode);
d_instantiate(dentry, inode);
if (file) {
- *opened |= FILE_CREATED;
- error = finish_open(file, dentry, gfs2_open_common, opened);
+ file->f_mode |= FMODE_CREATED;
+ error = finish_open(file, dentry, gfs2_open_common);
}
gfs2_glock_dq_uninit(ghs);
gfs2_glock_dq_uninit(ghs + 1);
@@ -822,7 +822,7 @@ fail:
static int gfs2_create(struct inode *dir, struct dentry *dentry,
umode_t mode, bool excl)
{
- return gfs2_create_inode(dir, dentry, NULL, S_IFREG | mode, 0, NULL, 0, excl, NULL);
+ return gfs2_create_inode(dir, dentry, NULL, S_IFREG | mode, 0, NULL, 0, excl);
}
/**
@@ -830,14 +830,13 @@ static int gfs2_create(struct inode *dir, struct dentry *dentry,
* @dir: The directory inode
* @dentry: The dentry of the new inode
* @file: File to be opened
- * @opened: atomic_open flags
*
*
* Returns: errno
*/
static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry,
- struct file *file, int *opened)
+ struct file *file)
{
struct inode *inode;
struct dentry *d;
@@ -866,7 +865,7 @@ static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry,
return d;
}
if (file && S_ISREG(inode->i_mode))
- error = finish_open(file, dentry, gfs2_open_common, opened);
+ error = finish_open(file, dentry, gfs2_open_common);
gfs2_glock_dq_uninit(&gh);
if (error) {
@@ -879,7 +878,7 @@ static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry,
static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
unsigned flags)
{
- return __gfs2_lookup(dir, dentry, NULL, NULL);
+ return __gfs2_lookup(dir, dentry, NULL);
}
/**
@@ -1189,7 +1188,7 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
if (size >= gfs2_max_stuffed_size(GFS2_I(dir)))
return -ENAMETOOLONG;
- return gfs2_create_inode(dir, dentry, NULL, S_IFLNK | S_IRWXUGO, 0, symname, size, 0, NULL);
+ return gfs2_create_inode(dir, dentry, NULL, S_IFLNK | S_IRWXUGO, 0, symname, size, 0);
}
/**
@@ -1204,7 +1203,7 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
unsigned dsize = gfs2_max_stuffed_size(GFS2_I(dir));
- return gfs2_create_inode(dir, dentry, NULL, S_IFDIR | mode, 0, NULL, dsize, 0, NULL);
+ return gfs2_create_inode(dir, dentry, NULL, S_IFDIR | mode, 0, NULL, dsize, 0);
}
/**
@@ -1219,7 +1218,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
static int gfs2_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
dev_t dev)
{
- return gfs2_create_inode(dir, dentry, NULL, mode, dev, NULL, 0, 0, NULL);
+ return gfs2_create_inode(dir, dentry, NULL, mode, dev, NULL, 0, 0);
}
/**
@@ -1229,14 +1228,13 @@ static int gfs2_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
* @file: The proposed new struct file
* @flags: open flags
* @mode: File mode
- * @opened: Flag to say whether the file has been opened or not
*
* Returns: error code or 0 for success
*/
static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned flags,
- umode_t mode, int *opened)
+ umode_t mode)
{
struct dentry *d;
bool excl = !!(flags & O_EXCL);
@@ -1244,13 +1242,13 @@ static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry,
if (!d_in_lookup(dentry))
goto skip_lookup;
- d = __gfs2_lookup(dir, dentry, file, opened);
+ d = __gfs2_lookup(dir, dentry, file);
if (IS_ERR(d))
return PTR_ERR(d);
if (d != NULL)
dentry = d;
if (d_really_is_positive(dentry)) {
- if (!(*opened & FILE_OPENED))
+ if (!(file->f_mode & FMODE_OPENED))
return finish_no_open(file, d);
dput(d);
return 0;
@@ -1262,7 +1260,7 @@ skip_lookup:
if (!(flags & O_CREAT))
return -ENOENT;
- return gfs2_create_inode(dir, dentry, file, S_IFREG | mode, 0, NULL, 0, excl, opened);
+ return gfs2_create_inode(dir, dentry, file, S_IFREG | mode, 0, NULL, 0, excl);
}
/*
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 40d4c66c7751..346a146c7617 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -1310,10 +1310,6 @@ static int get_hstate_idx(int page_size_log)
return h - hstates;
}
-static const struct dentry_operations anon_ops = {
- .d_dname = simple_dname
-};
-
/*
* Note that size should be aligned to proper hugepage size in caller side,
* otherwise hugetlb_reserve_pages reserves one less hugepages than intended.
@@ -1322,19 +1318,18 @@ struct file *hugetlb_file_setup(const char *name, size_t size,
vm_flags_t acctflag, struct user_struct **user,
int creat_flags, int page_size_log)
{
- struct file *file = ERR_PTR(-ENOMEM);
struct inode *inode;
- struct path path;
- struct super_block *sb;
- struct qstr quick_string;
+ struct vfsmount *mnt;
int hstate_idx;
+ struct file *file;
hstate_idx = get_hstate_idx(page_size_log);
if (hstate_idx < 0)
return ERR_PTR(-ENODEV);
*user = NULL;
- if (!hugetlbfs_vfsmount[hstate_idx])
+ mnt = hugetlbfs_vfsmount[hstate_idx];
+ if (!mnt)
return ERR_PTR(-ENOENT);
if (creat_flags == HUGETLB_SHMFS_INODE && !can_do_hugetlb_shm()) {
@@ -1350,45 +1345,28 @@ struct file *hugetlb_file_setup(const char *name, size_t size,
}
}
- sb = hugetlbfs_vfsmount[hstate_idx]->mnt_sb;
- quick_string.name = name;
- quick_string.len = strlen(quick_string.name);
- quick_string.hash = 0;
- path.dentry = d_alloc_pseudo(sb, &quick_string);
- if (!path.dentry)
- goto out_shm_unlock;
-
- d_set_d_op(path.dentry, &anon_ops);
- path.mnt = mntget(hugetlbfs_vfsmount[hstate_idx]);
file = ERR_PTR(-ENOSPC);
- inode = hugetlbfs_get_inode(sb, NULL, S_IFREG | S_IRWXUGO, 0);
+ inode = hugetlbfs_get_inode(mnt->mnt_sb, NULL, S_IFREG | S_IRWXUGO, 0);
if (!inode)
- goto out_dentry;
+ goto out;
if (creat_flags == HUGETLB_SHMFS_INODE)
inode->i_flags |= S_PRIVATE;
- file = ERR_PTR(-ENOMEM);
- if (hugetlb_reserve_pages(inode, 0,
- size >> huge_page_shift(hstate_inode(inode)), NULL,
- acctflag))
- goto out_inode;
-
- d_instantiate(path.dentry, inode);
inode->i_size = size;
clear_nlink(inode);
- file = alloc_file(&path, FMODE_WRITE | FMODE_READ,
- &hugetlbfs_file_operations);
- if (IS_ERR(file))
- goto out_dentry; /* inode is already attached */
-
- return file;
+ if (hugetlb_reserve_pages(inode, 0,
+ size >> huge_page_shift(hstate_inode(inode)), NULL,
+ acctflag))
+ file = ERR_PTR(-ENOMEM);
+ else
+ file = alloc_file_pseudo(inode, mnt, name, O_RDWR,
+ &hugetlbfs_file_operations);
+ if (!IS_ERR(file))
+ return file;
-out_inode:
iput(inode);
-out_dentry:
- path_put(&path);
-out_shm_unlock:
+out:
if (*user) {
user_shm_unlock(size, *user);
*user = NULL;
diff --git a/fs/internal.h b/fs/internal.h
index 5645b4ebf494..52a346903748 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -93,7 +93,7 @@ extern void chroot_fs_refs(const struct path *, const struct path *);
/*
* file_table.c
*/
-extern struct file *get_empty_filp(void);
+extern struct file *alloc_empty_file(int, const struct cred *);
/*
* super.c
@@ -125,8 +125,7 @@ int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
int flag);
-extern int open_check_o_direct(struct file *f);
-extern int vfs_open(const struct path *, struct file *, const struct cred *);
+extern int vfs_open(const struct path *, struct file *);
/*
* inode.c
diff --git a/fs/namei.c b/fs/namei.c
index 734cef54fdf8..278e494bcbd2 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2028,6 +2028,8 @@ static int link_path_walk(const char *name, struct nameidata *nd)
{
int err;
+ if (IS_ERR(name))
+ return PTR_ERR(name);
while (*name=='/')
name++;
if (!*name)
@@ -2125,12 +2127,15 @@ OK:
}
}
+/* must be paired with terminate_walk() */
static const char *path_init(struct nameidata *nd, unsigned flags)
{
const char *s = nd->name->name;
if (!*s)
flags &= ~LOOKUP_RCU;
+ if (flags & LOOKUP_RCU)
+ rcu_read_lock();
nd->last_type = LAST_ROOT; /* if there are only slashes... */
nd->flags = flags | LOOKUP_JUMPED | LOOKUP_PARENT;
@@ -2143,7 +2148,6 @@ static const char *path_init(struct nameidata *nd, unsigned flags)
nd->path = nd->root;
nd->inode = inode;
if (flags & LOOKUP_RCU) {
- rcu_read_lock();
nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq);
nd->root_seq = nd->seq;
nd->m_seq = read_seqbegin(&mount_lock);
@@ -2159,21 +2163,15 @@ static const char *path_init(struct nameidata *nd, unsigned flags)
nd->m_seq = read_seqbegin(&mount_lock);
if (*s == '/') {
- if (flags & LOOKUP_RCU)
- rcu_read_lock();
set_root(nd);
if (likely(!nd_jump_root(nd)))
return s;
- nd->root.mnt = NULL;
- rcu_read_unlock();
return ERR_PTR(-ECHILD);
} else if (nd->dfd == AT_FDCWD) {
if (flags & LOOKUP_RCU) {
struct fs_struct *fs = current->fs;
unsigned seq;
- rcu_read_lock();
-
do {
seq = read_seqcount_begin(&fs->seq);
nd->path = fs->pwd;
@@ -2195,16 +2193,13 @@ static const char *path_init(struct nameidata *nd, unsigned flags)
dentry = f.file->f_path.dentry;
- if (*s) {
- if (!d_can_lookup(dentry)) {
- fdput(f);
- return ERR_PTR(-ENOTDIR);
- }
+ if (*s && unlikely(!d_can_lookup(dentry))) {
+ fdput(f);
+ return ERR_PTR(-ENOTDIR);
}
nd->path = f.file->f_path;
if (flags & LOOKUP_RCU) {
- rcu_read_lock();
nd->inode = nd->path.dentry->d_inode;
nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq);
} else {
@@ -2272,24 +2267,15 @@ static int path_lookupat(struct nameidata *nd, unsigned flags, struct path *path
const char *s = path_init(nd, flags);
int err;
- if (IS_ERR(s))
- return PTR_ERR(s);
-
- if (unlikely(flags & LOOKUP_DOWN)) {
+ if (unlikely(flags & LOOKUP_DOWN) && !IS_ERR(s)) {
err = handle_lookup_down(nd);
- if (unlikely(err < 0)) {
- terminate_walk(nd);
- return err;
- }
+ if (unlikely(err < 0))
+ s = ERR_PTR(err);
}
while (!(err = link_path_walk(s, nd))
&& ((err = lookup_last(nd)) > 0)) {
s = trailing_symlink(nd);
- if (IS_ERR(s)) {
- err = PTR_ERR(s);
- break;
- }
}
if (!err)
err = complete_walk(nd);
@@ -2336,10 +2322,7 @@ static int path_parentat(struct nameidata *nd, unsigned flags,
struct path *parent)
{
const char *s = path_init(nd, flags);
- int err;
- if (IS_ERR(s))
- return PTR_ERR(s);
- err = link_path_walk(s, nd);
+ int err = link_path_walk(s, nd);
if (!err)
err = complete_walk(nd);
if (!err) {
@@ -2666,15 +2649,10 @@ path_mountpoint(struct nameidata *nd, unsigned flags, struct path *path)
{
const char *s = path_init(nd, flags);
int err;
- if (IS_ERR(s))
- return PTR_ERR(s);
+
while (!(err = link_path_walk(s, nd)) &&
(err = mountpoint_last(nd)) > 0) {
s = trailing_symlink(nd);
- if (IS_ERR(s)) {
- err = PTR_ERR(s);
- break;
- }
}
if (!err) {
*path = nd->path;
@@ -3027,17 +3005,16 @@ static int may_o_create(const struct path *dir, struct dentry *dentry, umode_t m
* Returns 0 if successful. The file will have been created and attached to
* @file by the filesystem calling finish_open().
*
- * Returns 1 if the file was looked up only or didn't need creating. The
- * caller will need to perform the open themselves. @path will have been
- * updated to point to the new dentry. This may be negative.
+ * If the file was looked up only or didn't need creating, FMODE_OPENED won't
+ * be set. The caller will need to perform the open themselves. @path will
+ * have been updated to point to the new dentry. This may be negative.
*
* Returns an error code otherwise.
*/
static int atomic_open(struct nameidata *nd, struct dentry *dentry,
struct path *path, struct file *file,
const struct open_flags *op,
- int open_flag, umode_t mode,
- int *opened)
+ int open_flag, umode_t mode)
{
struct dentry *const DENTRY_NOT_SET = (void *) -1UL;
struct inode *dir = nd->path.dentry->d_inode;
@@ -3052,39 +3029,38 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
file->f_path.dentry = DENTRY_NOT_SET;
file->f_path.mnt = nd->path.mnt;
error = dir->i_op->atomic_open(dir, dentry, file,
- open_to_namei_flags(open_flag),
- mode, opened);
+ open_to_namei_flags(open_flag), mode);
d_lookup_done(dentry);
if (!error) {
- /*
- * We didn't have the inode before the open, so check open
- * permission here.
- */
- int acc_mode = op->acc_mode;
- if (*opened & FILE_CREATED) {
- WARN_ON(!(open_flag & O_CREAT));
- fsnotify_create(dir, dentry);
- acc_mode = 0;
- }
- error = may_open(&file->f_path, acc_mode, open_flag);
- if (WARN_ON(error > 0))
- error = -EINVAL;
- } else if (error > 0) {
- if (WARN_ON(file->f_path.dentry == DENTRY_NOT_SET)) {
+ if (file->f_mode & FMODE_OPENED) {
+ /*
+ * We didn't have the inode before the open, so check open
+ * permission here.
+ */
+ int acc_mode = op->acc_mode;
+ if (file->f_mode & FMODE_CREATED) {
+ WARN_ON(!(open_flag & O_CREAT));
+ fsnotify_create(dir, dentry);
+ acc_mode = 0;
+ }
+ error = may_open(&file->f_path, acc_mode, open_flag);
+ if (WARN_ON(error > 0))
+ error = -EINVAL;
+ } else if (WARN_ON(file->f_path.dentry == DENTRY_NOT_SET)) {
error = -EIO;
} else {
if (file->f_path.dentry) {
dput(dentry);
dentry = file->f_path.dentry;
}
- if (*opened & FILE_CREATED)
+ if (file->f_mode & FMODE_CREATED)
fsnotify_create(dir, dentry);
if (unlikely(d_is_negative(dentry))) {
error = -ENOENT;
} else {
path->dentry = dentry;
path->mnt = nd->path.mnt;
- return 1;
+ return 0;
}
}
}
@@ -3095,25 +3071,22 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
/*
* Look up and maybe create and open the last component.
*
- * Must be called with i_mutex held on parent.
- *
- * Returns 0 if the file was successfully atomically created (if necessary) and
- * opened. In this case the file will be returned attached to @file.
+ * Must be called with parent locked (exclusive in O_CREAT case).
*
- * Returns 1 if the file was not completely opened at this time, though lookups
- * and creations will have been performed and the dentry returned in @path will
- * be positive upon return if O_CREAT was specified. If O_CREAT wasn't
- * specified then a negative dentry may be returned.
+ * Returns 0 on success, that is, if
+ * the file was successfully atomically created (if necessary) and opened, or
+ * the file was not completely opened at this time, though lookups and
+ * creations were performed.
+ * These case are distinguished by presence of FMODE_OPENED on file->f_mode.
+ * In the latter case dentry returned in @path might be negative if O_CREAT
+ * hadn't been specified.
*
- * An error code is returned otherwise.
- *
- * FILE_CREATE will be set in @*opened if the dentry was created and will be
- * cleared otherwise prior to returning.
+ * An error code is returned on failure.
*/
static int lookup_open(struct nameidata *nd, struct path *path,
struct file *file,
const struct open_flags *op,
- bool got_write, int *opened)
+ bool got_write)
{
struct dentry *dir = nd->path.dentry;
struct inode *dir_inode = dir->d_inode;
@@ -3126,7 +3099,7 @@ static int lookup_open(struct nameidata *nd, struct path *path,
if (unlikely(IS_DEADDIR(dir_inode)))
return -ENOENT;
- *opened &= ~FILE_CREATED;
+ file->f_mode &= ~FMODE_CREATED;
dentry = d_lookup(dir, &nd->last);
for (;;) {
if (!dentry) {
@@ -3188,7 +3161,7 @@ static int lookup_open(struct nameidata *nd, struct path *path,
if (dir_inode->i_op->atomic_open) {
error = atomic_open(nd, dentry, path, file, op, open_flag,
- mode, opened);
+ mode);
if (unlikely(error == -ENOENT) && create_error)
error = create_error;
return error;
@@ -3211,7 +3184,7 @@ no_open:
/* Negative dentry, just create the file */
if (!dentry->d_inode && (open_flag & O_CREAT)) {
- *opened |= FILE_CREATED;
+ file->f_mode |= FMODE_CREATED;
audit_inode_child(dir_inode, dentry, AUDIT_TYPE_CHILD_CREATE);
if (!dir_inode->i_op->create) {
error = -EACCES;
@@ -3230,7 +3203,7 @@ no_open:
out_no_open:
path->dentry = dentry;
path->mnt = nd->path.mnt;
- return 1;
+ return 0;
out_dput:
dput(dentry);
@@ -3241,8 +3214,7 @@ out_dput:
* Handle the last step of open()
*/
static int do_last(struct nameidata *nd,
- struct file *file, const struct open_flags *op,
- int *opened)
+ struct file *file, const struct open_flags *op)
{
struct dentry *dir = nd->path.dentry;
int open_flag = op->open_flag;
@@ -3308,17 +3280,17 @@ static int do_last(struct nameidata *nd,
inode_lock(dir->d_inode);
else
inode_lock_shared(dir->d_inode);
- error = lookup_open(nd, &path, file, op, got_write, opened);
+ error = lookup_open(nd, &path, file, op, got_write);
if (open_flag & O_CREAT)
inode_unlock(dir->d_inode);
else
inode_unlock_shared(dir->d_inode);
- if (error <= 0) {
- if (error)
- goto out;
+ if (error)
+ goto out;
- if ((*opened & FILE_CREATED) ||
+ if (file->f_mode & FMODE_OPENED) {
+ if ((file->f_mode & FMODE_CREATED) ||
!S_ISREG(file_inode(file)->i_mode))
will_truncate = false;
@@ -3326,7 +3298,7 @@ static int do_last(struct nameidata *nd,
goto opened;
}
- if (*opened & FILE_CREATED) {
+ if (file->f_mode & FMODE_CREATED) {
/* Don't check for write permission, don't truncate */
open_flag &= ~O_TRUNC;
will_truncate = false;
@@ -3395,20 +3367,15 @@ finish_open_created:
error = may_open(&nd->path, acc_mode, open_flag);
if (error)
goto out;
- BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */
- error = vfs_open(&nd->path, file, current_cred());
+ BUG_ON(file->f_mode & FMODE_OPENED); /* once it's opened, it's opened */
+ error = vfs_open(&nd->path, file);
if (error)
goto out;
- *opened |= FILE_OPENED;
opened:
- error = open_check_o_direct(file);
- if (!error)
- error = ima_file_check(file, op->acc_mode, *opened);
+ error = ima_file_check(file, op->acc_mode);
if (!error && will_truncate)
error = handle_truncate(file);
out:
- if (unlikely(error) && (*opened & FILE_OPENED))
- fput(file);
if (unlikely(error > 0)) {
WARN_ON(1);
error = -EINVAL;
@@ -3458,7 +3425,7 @@ EXPORT_SYMBOL(vfs_tmpfile);
static int do_tmpfile(struct nameidata *nd, unsigned flags,
const struct open_flags *op,
- struct file *file, int *opened)
+ struct file *file)
{
struct dentry *child;
struct path path;
@@ -3480,12 +3447,7 @@ static int do_tmpfile(struct nameidata *nd, unsigned flags,
if (error)
goto out2;
file->f_path.mnt = path.mnt;
- error = finish_open(file, child, NULL, opened);
- if (error)
- goto out2;
- error = open_check_o_direct(file);
- if (error)
- fput(file);
+ error = finish_open(file, child, NULL);
out2:
mnt_drop_write(path.mnt);
out:
@@ -3499,7 +3461,7 @@ static int do_o_path(struct nameidata *nd, unsigned flags, struct file *file)
int error = path_lookupat(nd, flags, &path);
if (!error) {
audit_inode(nd->name, path.dentry, 0);
- error = vfs_open(&path, file, current_cred());
+ error = vfs_open(&path, file);
path_put(&path);
}
return error;
@@ -3508,59 +3470,40 @@ static int do_o_path(struct nameidata *nd, unsigned flags, struct file *file)
static struct file *path_openat(struct nameidata *nd,
const struct open_flags *op, unsigned flags)
{
- const char *s;
struct file *file;
- int opened = 0;
int error;
- file = get_empty_filp();
+ file = alloc_empty_file(op->open_flag, current_cred());
if (IS_ERR(file))
return file;
- file->f_flags = op->open_flag;
-
if (unlikely(file->f_flags & __O_TMPFILE)) {
- error = do_tmpfile(nd, flags, op, file, &opened);
- goto out2;
- }
-
- if (unlikely(file->f_flags & O_PATH)) {
+ error = do_tmpfile(nd, flags, op, file);
+ } else if (unlikely(file->f_flags & O_PATH)) {
error = do_o_path(nd, flags, file);
- if (!error)
- opened |= FILE_OPENED;
- goto out2;
- }
-
- s = path_init(nd, flags);
- if (IS_ERR(s)) {
- put_filp(file);
- return ERR_CAST(s);
- }
- while (!(error = link_path_walk(s, nd)) &&
- (error = do_last(nd, file, op, &opened)) > 0) {
- nd->flags &= ~(LOOKUP_OPEN|LOOKUP_CREATE|LOOKUP_EXCL);
- s = trailing_symlink(nd);
- if (IS_ERR(s)) {
- error = PTR_ERR(s);
- break;
+ } else {
+ const char *s = path_init(nd, flags);
+ while (!(error = link_path_walk(s, nd)) &&
+ (error = do_last(nd, file, op)) > 0) {
+ nd->flags &= ~(LOOKUP_OPEN|LOOKUP_CREATE|LOOKUP_EXCL);
+ s = trailing_symlink(nd);
}
+ terminate_walk(nd);
}
- terminate_walk(nd);
-out2:
- if (!(opened & FILE_OPENED)) {
- BUG_ON(!error);
- put_filp(file);
+ if (likely(!error)) {
+ if (likely(file->f_mode & FMODE_OPENED))
+ return file;
+ WARN_ON(1);
+ error = -EINVAL;
}
- if (unlikely(error)) {
- if (error == -EOPENSTALE) {
- if (flags & LOOKUP_RCU)
- error = -ECHILD;
- else
- error = -ESTALE;
- }
- file = ERR_PTR(error);
+ fput(file);
+ if (error == -EOPENSTALE) {
+ if (flags & LOOKUP_RCU)
+ error = -ECHILD;
+ else
+ error = -ESTALE;
}
- return file;
+ return ERR_PTR(error);
}
struct file *do_filp_open(int dfd, struct filename *pathname,
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 7a9c14426855..f447b1a24350 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1434,12 +1434,11 @@ static int do_open(struct inode *inode, struct file *filp)
static int nfs_finish_open(struct nfs_open_context *ctx,
struct dentry *dentry,
- struct file *file, unsigned open_flags,
- int *opened)
+ struct file *file, unsigned open_flags)
{
int err;
- err = finish_open(file, dentry, do_open, opened);
+ err = finish_open(file, dentry, do_open);
if (err)
goto out;
if (S_ISREG(file->f_path.dentry->d_inode->i_mode))
@@ -1452,7 +1451,7 @@ out:
int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned open_flags,
- umode_t mode, int *opened)
+ umode_t mode)
{
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
struct nfs_open_context *ctx;
@@ -1461,6 +1460,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
struct inode *inode;
unsigned int lookup_flags = 0;
bool switched = false;
+ int created = 0;
int err;
/* Expect a negative dentry */
@@ -1521,7 +1521,9 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
goto out;
trace_nfs_atomic_open_enter(dir, ctx, open_flags);
- inode = NFS_PROTO(dir)->open_context(dir, ctx, open_flags, &attr, opened);
+ inode = NFS_PROTO(dir)->open_context(dir, ctx, open_flags, &attr, &created);
+ if (created)
+ file->f_mode |= FMODE_CREATED;
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
trace_nfs_atomic_open_exit(dir, ctx, open_flags, err);
@@ -1546,7 +1548,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
goto out;
}
- err = nfs_finish_open(ctx, ctx->dentry, file, open_flags, opened);
+ err = nfs_finish_open(ctx, ctx->dentry, file, open_flags);
trace_nfs_atomic_open_exit(dir, ctx, open_flags, err);
put_nfs_open_context(ctx);
out:
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 137e18abb7e7..51beb6e38c90 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -258,7 +258,7 @@ extern const struct dentry_operations nfs4_dentry_operations;
/* dir.c */
int nfs_atomic_open(struct inode *, struct dentry *, struct file *,
- unsigned, umode_t, int *);
+ unsigned, umode_t);
/* super.c */
extern struct file_system_type nfs4_fs_type;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index f6c4ccd693f4..b790976d3913 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2951,7 +2951,7 @@ static int _nfs4_do_open(struct inode *dir,
}
}
if (opened && opendata->file_created)
- *opened |= FILE_CREATED;
+ *opened = 1;
if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) {
*ctx_th = opendata->f_attr.mdsthreshold;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index b0555d7d8200..55a099e47ba2 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -763,7 +763,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
goto out_nfserr;
}
- host_err = ima_file_check(file, may_flags, 0);
+ host_err = ima_file_check(file, may_flags);
if (host_err) {
fput(file);
goto out_nfserr;
diff --git a/fs/open.c b/fs/open.c
index d0e955b558ad..d98e19239bb7 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -724,27 +724,13 @@ SYSCALL_DEFINE3(fchown, unsigned int, fd, uid_t, user, gid_t, group)
return ksys_fchown(fd, user, group);
}
-int open_check_o_direct(struct file *f)
-{
- /* NB: we're sure to have correct a_ops only after f_op->open */
- if (f->f_flags & O_DIRECT) {
- if (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO)
- return -EINVAL;
- }
- return 0;
-}
-
static int do_dentry_open(struct file *f,
struct inode *inode,
- int (*open)(struct inode *, struct file *),
- const struct cred *cred)
+ int (*open)(struct inode *, struct file *))
{
static const struct file_operations empty_fops = {};
int error;
- f->f_mode = OPEN_FMODE(f->f_flags) | FMODE_LSEEK |
- FMODE_PREAD | FMODE_PWRITE;
-
path_get(&f->f_path);
f->f_inode = inode;
f->f_mapping = inode->i_mapping;
@@ -753,7 +739,7 @@ static int do_dentry_open(struct file *f,
f->f_wb_err = filemap_sample_wb_err(f->f_mapping);
if (unlikely(f->f_flags & O_PATH)) {
- f->f_mode = FMODE_PATH;
+ f->f_mode = FMODE_PATH | FMODE_OPENED;
f->f_op = &empty_fops;
return 0;
}
@@ -780,7 +766,7 @@ static int do_dentry_open(struct file *f,
goto cleanup_all;
}
- error = security_file_open(f, cred);
+ error = security_file_open(f);
if (error)
goto cleanup_all;
@@ -788,6 +774,8 @@ static int do_dentry_open(struct file *f,
if (error)
goto cleanup_all;
+ /* normally all 3 are set; ->open() can clear them if needed */
+ f->f_mode |= FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE;
if (!open)
open = f->f_op->open;
if (open) {
@@ -795,6 +783,7 @@ static int do_dentry_open(struct file *f,
if (error)
goto cleanup_all;
}
+ f->f_mode |= FMODE_OPENED;
if ((f->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
i_readcount_inc(inode);
if ((f->f_mode & FMODE_READ) &&
@@ -809,9 +798,16 @@ static int do_dentry_open(struct file *f,
file_ra_state_init(&f->f_ra, f->f_mapping->host->i_mapping);
+ /* NB: we're sure to have correct a_ops only after f_op->open */
+ if (f->f_flags & O_DIRECT) {
+ if (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO)
+ return -EINVAL;
+ }
return 0;
cleanup_all:
+ if (WARN_ON_ONCE(error > 0))
+ error = -EINVAL;
fops_put(f->f_op);
if (f->f_mode & FMODE_WRITER) {
put_write_access(inode);
@@ -847,19 +843,12 @@ cleanup_file:
* Returns zero on success or -errno if the open failed.
*/
int finish_open(struct file *file, struct dentry *dentry,
- int (*open)(struct inode *, struct file *),
- int *opened)
+ int (*open)(struct inode *, struct file *))
{
- int error;
- BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */
+ BUG_ON(file->f_mode & FMODE_OPENED); /* once it's opened, it's opened */
file->f_path.dentry = dentry;
- error = do_dentry_open(file, d_backing_inode(dentry), open,
- current_cred());
- if (!error)
- *opened |= FILE_OPENED;
-
- return error;
+ return do_dentry_open(file, d_backing_inode(dentry), open);
}
EXPORT_SYMBOL(finish_open);
@@ -874,13 +863,13 @@ EXPORT_SYMBOL(finish_open);
* NB: unlike finish_open() this function does consume the dentry reference and
* the caller need not dput() it.
*
- * Returns "1" which must be the return value of ->atomic_open() after having
+ * Returns "0" which must be the return value of ->atomic_open() after having
* called this function.
*/
int finish_no_open(struct file *file, struct dentry *dentry)
{
file->f_path.dentry = dentry;
- return 1;
+ return 0;
}
EXPORT_SYMBOL(finish_no_open);
@@ -896,8 +885,7 @@ EXPORT_SYMBOL(file_path);
* @file: newly allocated file with f_flag initialized
* @cred: credentials to use
*/
-int vfs_open(const struct path *path, struct file *file,
- const struct cred *cred)
+int vfs_open(const struct path *path, struct file *file)
{
struct dentry *dentry = d_real(path->dentry, NULL, file->f_flags, 0);
@@ -905,7 +893,7 @@ int vfs_open(const struct path *path, struct file *file,
return PTR_ERR(dentry);
file->f_path = *path;
- return do_dentry_open(file, d_backing_inode(dentry), NULL, cred);
+ return do_dentry_open(file, d_backing_inode(dentry), NULL);
}
struct file *dentry_open(const struct path *path, int flags,
@@ -919,19 +907,11 @@ struct file *dentry_open(const struct path *path, int flags,
/* We must always pass in a valid mount pointer. */
BUG_ON(!path->mnt);
- f = get_empty_filp();
+ f = alloc_empty_file(flags, cred);
if (!IS_ERR(f)) {
- f->f_flags = flags;
- error = vfs_open(path, f, cred);
- if (!error) {
- /* from now on we need fput() to dispose of f */
- error = open_check_o_direct(f);
- if (error) {
- fput(f);
- f = ERR_PTR(error);
- }
- } else {
- put_filp(f);
+ error = vfs_open(path, f);
+ if (error) {
+ fput(f);
f = ERR_PTR(error);
}
}
@@ -1063,26 +1043,6 @@ struct file *file_open_root(struct dentry *dentry, struct vfsmount *mnt,
}
EXPORT_SYMBOL(file_open_root);
-struct file *filp_clone_open(struct file *oldfile)
-{
- struct file *file;
- int retval;
-
- file = get_empty_filp();
- if (IS_ERR(file))
- return file;
-
- file->f_flags = oldfile->f_flags;
- retval = vfs_open(&oldfile->f_path, file, oldfile->f_cred);
- if (retval) {
- put_filp(file);
- return ERR_PTR(retval);
- }
-
- return file;
-}
-EXPORT_SYMBOL(filp_clone_open);
-
long do_sys_open(int dfd, const char __user *filename, int flags, umode_t mode)
{
struct open_flags op;
diff --git a/fs/pipe.c b/fs/pipe.c
index 39d6f431da83..bdc5d3c0977d 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -741,54 +741,33 @@ fail_inode:
int create_pipe_files(struct file **res, int flags)
{
- int err;
struct inode *inode = get_pipe_inode();
struct file *f;
- struct path path;
if (!inode)
return -ENFILE;
- err = -ENOMEM;
- path.dentry = d_alloc_pseudo(pipe_mnt->mnt_sb, &empty_name);
- if (!path.dentry)
- goto err_inode;
- path.mnt = mntget(pipe_mnt);
-
- d_instantiate(path.dentry, inode);
-
- f = alloc_file(&path, FMODE_WRITE, &pipefifo_fops);
+ f = alloc_file_pseudo(inode, pipe_mnt, "",
+ O_WRONLY | (flags & (O_NONBLOCK | O_DIRECT)),
+ &pipefifo_fops);
if (IS_ERR(f)) {
- err = PTR_ERR(f);
- goto err_dentry;
+ free_pipe_info(inode->i_pipe);
+ iput(inode);
+ return PTR_ERR(f);
}
- f->f_flags = O_WRONLY | (flags & (O_NONBLOCK | O_DIRECT));
f->private_data = inode->i_pipe;
- res[0] = alloc_file(&path, FMODE_READ, &pipefifo_fops);
+ res[0] = alloc_file_clone(f, O_RDONLY | (flags & O_NONBLOCK),
+ &pipefifo_fops);
if (IS_ERR(res[0])) {
- err = PTR_ERR(res[0]);
- goto err_file;
+ put_pipe_info(inode, inode->i_pipe);
+ fput(f);
+ return PTR_ERR(res[0]);
}
-
- path_get(&path);
res[0]->private_data = inode->i_pipe;
- res[0]->f_flags = O_RDONLY | (flags & O_NONBLOCK);
res[1] = f;
return 0;
-
-err_file:
- put_filp(f);
-err_dentry:
- free_pipe_info(inode->i_pipe);
- path_put(&path);
- return err;
-
-err_inode:
- free_pipe_info(inode->i_pipe);
- iput(inode);
- return err;
}
static int __do_pipe_flags(int *fd, struct file **files, int flags)
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-24 05:11:09 +0300