From: Daniel Rosenberg <drosen@google.com>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: Amir Goldstein <amir73il@gmail.com>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-unionfs@vger.kernel.org, bpf@vger.kernel.org,
kernel-team@android.com, Daniel Rosenberg <drosen@google.com>,
Paul Lawrence <paullawrence@google.com>
Subject: [RFC PATCH v2 10/21] fuse-bpf: Add support for fallocate
Date: Mon, 21 Nov 2022 18:15:25 -0800 [thread overview]
Message-ID: <20221122021536.1629178-11-drosen@google.com> (raw)
In-Reply-To: <20221122021536.1629178-1-drosen@google.com>
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Signed-off-by: Paul Lawrence <paullawrence@google.com>
---
fs/fuse/backing.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++
fs/fuse/file.c | 3 +++
fs/fuse/fuse_i.h | 6 +++++
3 files changed, 67 insertions(+)
diff --git a/fs/fuse/backing.c b/fs/fuse/backing.c
index 76f48872ed35..51aadeb1b7dc 100644
--- a/fs/fuse/backing.c
+++ b/fs/fuse/backing.c
@@ -330,6 +330,64 @@ ssize_t fuse_backing_mmap(struct file *file, struct vm_area_struct *vma)
return ret;
}
+static int fuse_file_fallocate_initialize_in(struct fuse_args *fa,
+ struct fuse_fallocate_in *ffi,
+ struct file *file, int mode, loff_t offset, loff_t length)
+{
+ struct fuse_file *ff = file->private_data;
+
+ *ffi = (struct fuse_fallocate_in) {
+ .fh = ff->fh,
+ .offset = offset,
+ .length = length,
+ .mode = mode,
+ };
+
+ *fa = (struct fuse_args) {
+ .opcode = FUSE_FALLOCATE,
+ .nodeid = ff->nodeid,
+ .in_numargs = 1,
+ .in_args[0].size = sizeof(*ffi),
+ .in_args[0].value = ffi,
+ };
+
+ return 0;
+}
+
+static int fuse_file_fallocate_initialize_out(struct fuse_args *fa,
+ struct fuse_fallocate_in *ffi,
+ struct file *file, int mode, loff_t offset, loff_t length)
+{
+ return 0;
+}
+
+static int fuse_file_fallocate_backing(struct fuse_args *fa, int *out,
+ struct file *file, int mode, loff_t offset, loff_t length)
+{
+ const struct fuse_fallocate_in *ffi = fa->in_args[0].value;
+ struct fuse_file *ff = file->private_data;
+
+ *out = vfs_fallocate(ff->backing_file, ffi->mode, ffi->offset,
+ ffi->length);
+ return 0;
+}
+
+static int fuse_file_fallocate_finalize(struct fuse_args *fa, int *out,
+ struct file *file, int mode, loff_t offset, loff_t length)
+{
+ return 0;
+}
+
+int fuse_bpf_file_fallocate(int *out, struct inode *inode, struct file *file, int mode, loff_t offset, loff_t length)
+{
+ return fuse_bpf_backing(inode, struct fuse_fallocate_in, out,
+ fuse_file_fallocate_initialize_in,
+ fuse_file_fallocate_initialize_out,
+ fuse_file_fallocate_backing,
+ fuse_file_fallocate_finalize,
+ file, mode, offset, length);
+}
+
/*******************************************************************************
* Directory operations after here *
******************************************************************************/
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index e90b3e2d5452..ab3cd43556e0 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2997,6 +2997,9 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
bool block_faults = FUSE_IS_DAX(inode) && lock_inode;
+ if (fuse_bpf_file_fallocate(&err, inode, file, mode, offset, length))
+ return err;
+
if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
FALLOC_FL_ZERO_RANGE))
return -EOPNOTSUPP;
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 108c2ea15a49..4351dbc7f10d 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -1401,6 +1401,7 @@ int parse_fuse_bpf_entry(struct fuse_bpf_entry *fbe, int num_entries);
#ifdef CONFIG_FUSE_BPF
int fuse_bpf_lseek(loff_t *out, struct inode *inode, struct file *file, loff_t offset, int whence);
+int fuse_bpf_file_fallocate(int *out, struct inode *inode, struct file *file, int mode, loff_t offset, loff_t length);
int fuse_bpf_lookup(struct dentry **out, struct inode *dir, struct dentry *entry, unsigned int flags);
int fuse_bpf_access(int *out, struct inode *inode, int mask);
@@ -1411,6 +1412,11 @@ static inline int fuse_bpf_lseek(loff_t *out, struct inode *inode, struct file *
return 0;
}
+static inline int fuse_bpf_file_fallocate(int *out, struct inode *inode, struct file *file, int mode, loff_t offset, loff_t length)
+{
+ return 0;
+}
+
static inline int fuse_bpf_lookup(struct dentry **out, struct inode *dir, struct dentry *entry, unsigned int flags)
{
return 0;
--
2.38.1.584.g0f3c55d4c2-goog
next prev parent reply other threads:[~2022-11-22 2:17 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-22 2:15 [RFC PATCH v2 00/21] FUSE BPF: A Stacked Filesystem Extension for FUSE Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 01/21] fs: Generic function to convert iocb to rw flags Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 02/21] fuse-bpf: Update fuse side uapi Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 03/21] fuse-bpf: Prepare for fuse-bpf patch Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 04/21] fuse: Add fuse-bpf, a stacked fs extension for FUSE Daniel Rosenberg
2022-11-22 10:19 ` Amir Goldstein
2022-11-22 21:23 ` Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 05/21] fuse-bpf: Add ioctl interface for /dev/fuse Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 06/21] fuse-bpf: Don't support export_operations Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 07/21] fuse-bpf: Add support for FUSE_ACCESS Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 08/21] fuse-bpf: Partially add mapping support Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 09/21] fuse-bpf: Add lseek support Daniel Rosenberg
2022-11-22 2:15 ` Daniel Rosenberg [this message]
2022-11-22 2:15 ` [RFC PATCH v2 11/21] fuse-bpf: Support file/dir open/close Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 12/21] fuse-bpf: Support mknod/unlink/mkdir/rmdir Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 13/21] fuse-bpf: Add support for read/write iter Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 14/21] fuse-bpf: support FUSE_READDIR Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 15/21] fuse-bpf: Add support for sync operations Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 16/21] fuse-bpf: Add Rename support Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 17/21] fuse-bpf: Add attr support Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 18/21] fuse-bpf: Add support for FUSE_COPY_FILE_RANGE Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 19/21] fuse-bpf: Add xattr support Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 20/21] fuse-bpf: Add symlink/link support Daniel Rosenberg
2022-11-22 2:15 ` [RFC PATCH v2 21/21] fuse-bpf: allow mounting with no userspace daemon Daniel Rosenberg
2022-11-22 11:13 ` [RFC PATCH v2 00/21] FUSE BPF: A Stacked Filesystem Extension for FUSE Amir Goldstein
2022-11-22 20:56 ` Daniel Rosenberg
2022-11-22 21:23 ` Bernd Schubert
2023-02-02 8:47 ` Amir Goldstein
2023-02-02 22:01 ` Bernd Schubert
2023-02-03 11:43 ` Amir Goldstein
2023-02-10 9:38 ` Miklos Szeredi
2023-02-10 9:41 ` Nikolaus Rath
2023-02-10 10:53 ` Miklos Szeredi
2023-02-14 16:53 ` Attending LFS (was: [RFC PATCH v2 00/21] FUSE BPF: A Stacked Filesystem Extension for FUSE) Nikolaus Rath
2023-02-14 18:04 ` Amir Goldstein
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20221122021536.1629178-11-drosen@google.com \
--to=drosen@google.com \
--cc=amir73il@gmail.com \
--cc=bpf@vger.kernel.org \
--cc=kernel-team@android.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-unionfs@vger.kernel.org \
--cc=miklos@szeredi.hu \
--cc=paullawrence@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).