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Diffstat (limited to 'fs/vboxsf/dir.c')
-rw-r--r--fs/vboxsf/dir.c95
1 files changed, 74 insertions, 21 deletions
diff --git a/fs/vboxsf/dir.c b/fs/vboxsf/dir.c
index dd147b490982..42bedc4ec7af 100644
--- a/fs/vboxsf/dir.c
+++ b/fs/vboxsf/dir.c
@@ -134,7 +134,7 @@ try_next_entry:
d_type = vboxsf_get_d_type(info->info.attr.mode);
/*
- * On 32 bit systems pos is 64 signed, while ino is 32 bit
+ * On 32-bit systems pos is 64-bit signed, while ino is 32-bit
* unsigned so fake_ino may overflow, check for this.
*/
if ((ino_t)(ctx->pos + 1) != (u64)(ctx->pos + 1)) {
@@ -179,9 +179,10 @@ static int vboxsf_dir_iterate(struct file *dir, struct dir_context *ctx)
return 0;
}
+WRAP_DIR_ITER(vboxsf_dir_iterate) // FIXME!
const struct file_operations vboxsf_dir_fops = {
.open = vboxsf_dir_open,
- .iterate = vboxsf_dir_iterate,
+ .iterate_shared = shared_vboxsf_dir_iterate,
.release = vboxsf_dir_release,
.read = generic_read_dir,
.llseek = generic_file_llseek,
@@ -191,7 +192,8 @@ const struct file_operations vboxsf_dir_fops = {
* This is called during name resolution/lookup to check if the @dentry in
* the cache is still valid. the job is handled by vboxsf_inode_revalidate.
*/
-static int vboxsf_dentry_revalidate(struct dentry *dentry, unsigned int flags)
+static int vboxsf_dentry_revalidate(struct inode *dir, const struct qstr *name,
+ struct dentry *dentry, unsigned int flags)
{
if (flags & LOOKUP_RCU)
return -ECHILD;
@@ -225,7 +227,7 @@ static struct dentry *vboxsf_dir_lookup(struct inode *parent,
} else {
inode = vboxsf_new_inode(parent->i_sb);
if (!IS_ERR(inode))
- vboxsf_init_inode(sbi, inode, &fsinfo);
+ vboxsf_init_inode(sbi, inode, &fsinfo, false);
}
return d_splice_alias(inode, dentry);
@@ -245,7 +247,7 @@ static int vboxsf_dir_instantiate(struct inode *parent, struct dentry *dentry,
sf_i = VBOXSF_I(inode);
/* The host may have given us different attr then requested */
sf_i->force_restat = 1;
- vboxsf_init_inode(sbi, inode, info);
+ vboxsf_init_inode(sbi, inode, info, false);
d_instantiate(dentry, inode);
@@ -253,7 +255,7 @@ static int vboxsf_dir_instantiate(struct inode *parent, struct dentry *dentry,
}
static int vboxsf_dir_create(struct inode *parent, struct dentry *dentry,
- umode_t mode, int is_dir)
+ umode_t mode, bool is_dir, bool excl, u64 *handle_ret)
{
struct vboxsf_inode *sf_parent_i = VBOXSF_I(parent);
struct vboxsf_sbi *sbi = VBOXSF_SBI(parent->i_sb);
@@ -261,10 +263,12 @@ static int vboxsf_dir_create(struct inode *parent, struct dentry *dentry,
int err;
params.handle = SHFL_HANDLE_NIL;
- params.create_flags = SHFL_CF_ACT_CREATE_IF_NEW |
- SHFL_CF_ACT_FAIL_IF_EXISTS |
- SHFL_CF_ACCESS_READWRITE |
- (is_dir ? SHFL_CF_DIRECTORY : 0);
+ params.create_flags = SHFL_CF_ACT_CREATE_IF_NEW | SHFL_CF_ACCESS_READWRITE;
+ if (is_dir)
+ params.create_flags |= SHFL_CF_DIRECTORY;
+ if (excl)
+ params.create_flags |= SHFL_CF_ACT_FAIL_IF_EXISTS;
+
params.info.attr.mode = (mode & 0777) |
(is_dir ? SHFL_TYPE_DIRECTORY : SHFL_TYPE_FILE);
params.info.attr.additional = SHFLFSOBJATTRADD_NOTHING;
@@ -276,28 +280,74 @@ static int vboxsf_dir_create(struct inode *parent, struct dentry *dentry,
if (params.result != SHFL_FILE_CREATED)
return -EPERM;
- vboxsf_close(sbi->root, params.handle);
-
err = vboxsf_dir_instantiate(parent, dentry, &params.info);
if (err)
- return err;
+ goto out;
/* parent directory access/change time changed */
sf_parent_i->force_restat = 1;
- return 0;
+out:
+ if (err == 0 && handle_ret)
+ *handle_ret = params.handle;
+ else
+ vboxsf_close(sbi->root, params.handle);
+
+ return err;
}
-static int vboxsf_dir_mkfile(struct inode *parent, struct dentry *dentry,
+static int vboxsf_dir_mkfile(struct mnt_idmap *idmap,
+ struct inode *parent, struct dentry *dentry,
umode_t mode, bool excl)
{
- return vboxsf_dir_create(parent, dentry, mode, 0);
+ return vboxsf_dir_create(parent, dentry, mode, false, excl, NULL);
+}
+
+static struct dentry *vboxsf_dir_mkdir(struct mnt_idmap *idmap,
+ struct inode *parent, struct dentry *dentry,
+ umode_t mode)
+{
+ return ERR_PTR(vboxsf_dir_create(parent, dentry, mode, true, true, NULL));
}
-static int vboxsf_dir_mkdir(struct inode *parent, struct dentry *dentry,
- umode_t mode)
+static int vboxsf_dir_atomic_open(struct inode *parent, struct dentry *dentry,
+ struct file *file, unsigned int flags, umode_t mode)
{
- return vboxsf_dir_create(parent, dentry, mode, 1);
+ struct vboxsf_sbi *sbi = VBOXSF_SBI(parent->i_sb);
+ struct vboxsf_handle *sf_handle;
+ u64 handle;
+ int err;
+
+ if (d_in_lookup(dentry)) {
+ struct dentry *res = vboxsf_dir_lookup(parent, dentry, 0);
+ if (res || d_really_is_positive(dentry))
+ return finish_no_open(file, res);
+ }
+
+ /* Only creates */
+ if (!(flags & O_CREAT))
+ return finish_no_open(file, NULL);
+
+ err = vboxsf_dir_create(parent, dentry, mode, false, flags & O_EXCL, &handle);
+ if (err)
+ return err;
+
+ sf_handle = vboxsf_create_sf_handle(d_inode(dentry), handle, SHFL_CF_ACCESS_READWRITE);
+ if (IS_ERR(sf_handle)) {
+ vboxsf_close(sbi->root, handle);
+ return PTR_ERR(sf_handle);
+ }
+
+ err = finish_open(file, dentry, generic_file_open);
+ if (err) {
+ /* This also closes the handle passed to vboxsf_create_sf_handle() */
+ vboxsf_release_sf_handle(d_inode(dentry), sf_handle);
+ return err;
+ }
+
+ file->private_data = sf_handle;
+ file->f_mode |= FMODE_CREATED;
+ return 0;
}
static int vboxsf_dir_unlink(struct inode *parent, struct dentry *dentry)
@@ -332,7 +382,8 @@ static int vboxsf_dir_unlink(struct inode *parent, struct dentry *dentry)
return 0;
}
-static int vboxsf_dir_rename(struct inode *old_parent,
+static int vboxsf_dir_rename(struct mnt_idmap *idmap,
+ struct inode *old_parent,
struct dentry *old_dentry,
struct inode *new_parent,
struct dentry *new_dentry,
@@ -374,7 +425,8 @@ err_put_old_path:
return err;
}
-static int vboxsf_dir_symlink(struct inode *parent, struct dentry *dentry,
+static int vboxsf_dir_symlink(struct mnt_idmap *idmap,
+ struct inode *parent, struct dentry *dentry,
const char *symname)
{
struct vboxsf_inode *sf_parent_i = VBOXSF_I(parent);
@@ -418,6 +470,7 @@ const struct inode_operations vboxsf_dir_iops = {
.lookup = vboxsf_dir_lookup,
.create = vboxsf_dir_mkfile,
.mkdir = vboxsf_dir_mkdir,
+ .atomic_open = vboxsf_dir_atomic_open,
.rmdir = vboxsf_dir_unlink,
.unlink = vboxsf_dir_unlink,
.rename = vboxsf_dir_rename,
generated by cgit (git 2.34.1) at 2025-12-26 03:20:26 +0000