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[34.87.107.114]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3142a20c158sm49922929eec.29.2026.07.21.03.35.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Jul 2026 03:35:45 -0700 (PDT) From: Aditya Prakash Srivastava To: Jens Axboe , Christian Brauner , Alexander Viro Cc: Jan Kara , io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Aditya Prakash Srivastava Subject: [PATCH v3 1/2] fs: make file_listxattr and file_removexattr helpers non-static Date: Tue, 21 Jul 2026 10:35:13 +0000 Message-ID: <20260721103514.2716-2-aditya.ansh182@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260721103514.2716-1-aditya.ansh182@gmail.com> References: <20260721103514.2716-1-aditya.ansh182@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In preparation for adding IORING_OP_FREMOVEXATTR and IORING_OP_FLISTXATTR support in io_uring, we need to invoke the VFS-layer helpers from within io_uring. Make the following helpers non-static and declare them in fs/internal.h: - file_listxattr() - file_removexattr() No functional change is introduced. Signed-off-by: Aditya Prakash Srivastava --- fs/internal.h | 2 ++ fs/xattr.c | 3 +-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/internal.h b/fs/internal.h index 355d93f92208..ee86b24db79a 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -297,6 +297,8 @@ int filename_setxattr(int dfd, struct filename *filenam= e, unsigned int lookup_flags, struct kernel_xattr_ctx *ctx); int setxattr_copy(const char __user *name, struct kernel_xattr_ctx *ctx); int import_xattr_name(struct xattr_name *kname, const char __user *name); +ssize_t file_listxattr(struct file *f, char __user *list, size_t size); +int file_removexattr(struct file *f, struct xattr_name *kname); =20 int may_write_xattr(struct mnt_idmap *idmap, struct inode *inode); =20 diff --git a/fs/xattr.c b/fs/xattr.c index d58979115200..31b8a5eeec1e 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -953,7 +953,6 @@ listxattr(struct dentry *d, char __user *list, size_t s= ize) return error; } =20 -static ssize_t file_listxattr(struct file *f, char __user *list, size_t size) { audit_file(f); 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[34.87.107.114]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3142a20c158sm49922929eec.29.2026.07.21.03.36.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Jul 2026 03:36:02 -0700 (PDT) From: Aditya Prakash Srivastava To: Jens Axboe , Christian Brauner , Alexander Viro Cc: Jan Kara , io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Aditya Prakash Srivastava Subject: [PATCH v3 2/2] io_uring: add fremovexattr and flistxattr support Date: Tue, 21 Jul 2026 10:35:14 +0000 Message-ID: <20260721103514.2716-3-aditya.ansh182@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260721103514.2716-1-aditya.ansh182@gmail.com> References: <20260721103514.2716-1-aditya.ansh182@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add support for IORING_OP_FREMOVEXATTR and IORING_OP_FLISTXATTR. This enables xattr listing and removal operations to be executed in an asynchronous fashion. Signed-off-by: Aditya Prakash Srivastava --- include/uapi/linux/io_uring.h | 2 + io_uring/opdef.c | 18 +++++++ io_uring/xattr.c | 74 +++++++++++++++++++++++++++++ io_uring/xattr.h | 6 +++ tools/include/uapi/linux/io_uring.h | 13 +++++ 5 files changed, 113 insertions(+) diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 909fb7aea638..805f1e31f492 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -318,6 +318,8 @@ enum io_uring_op { IORING_OP_PIPE, IORING_OP_NOP128, IORING_OP_URING_CMD128, + IORING_OP_FREMOVEXATTR, + IORING_OP_FLISTXATTR, =20 /* this goes last, obviously */ IORING_OP_LAST, diff --git a/io_uring/opdef.c b/io_uring/opdef.c index 4e58eb1344ea..25d9229d8fc0 100644 --- a/io_uring/opdef.c +++ b/io_uring/opdef.c @@ -591,6 +591,16 @@ const struct io_issue_def io_issue_defs[] =3D { .prep =3D io_uring_cmd_prep, .issue =3D io_uring_cmd, }, + [IORING_OP_FREMOVEXATTR] =3D { + .needs_file =3D 1, + .prep =3D io_fremovexattr_prep, + .issue =3D io_fremovexattr, + }, + [IORING_OP_FLISTXATTR] =3D { + .needs_file =3D 1, + .prep =3D io_flistxattr_prep, + .issue =3D io_flistxattr, + }, }; =20 const struct io_cold_def io_cold_defs[] =3D { @@ -849,6 +859,14 @@ const struct io_cold_def io_cold_defs[] =3D { .sqe_copy =3D io_uring_cmd_sqe_copy, .cleanup =3D io_uring_cmd_cleanup, }, + [IORING_OP_FREMOVEXATTR] =3D { + .name =3D "FREMOVEXATTR", + .cleanup =3D io_xattr_cleanup, + }, + [IORING_OP_FLISTXATTR] =3D { + .name =3D "FLISTXATTR", + .cleanup =3D io_xattr_cleanup, + }, }; =20 const char *io_uring_get_opcode(u8 opcode) diff --git a/io_uring/xattr.c b/io_uring/xattr.c index 5303df3f247f..9b410f91ef43 100644 --- a/io_uring/xattr.c +++ b/io_uring/xattr.c @@ -195,3 +195,77 @@ int io_setxattr(struct io_kiocb *req, unsigned int iss= ue_flags) io_xattr_finish(req, ret); return IOU_COMPLETE; } + +int io_fremovexattr_prep(struct io_kiocb *req, const struct io_uring_sqe *= sqe) +{ + struct io_xattr *ix =3D io_kiocb_to_cmd(req, struct io_xattr); + const char __user *name; + int ret; + + INIT_DELAYED_FILENAME(&ix->filename); + name =3D u64_to_user_ptr(READ_ONCE(sqe->addr)); + + if (READ_ONCE(sqe->addr2) || READ_ONCE(sqe->len) || READ_ONCE(sqe->xattr_= flags)) + return -EINVAL; + + ix->ctx.kname =3D kmalloc_obj(*ix->ctx.kname); + if (!ix->ctx.kname) + return -ENOMEM; + + ret =3D import_xattr_name(ix->ctx.kname, name); + if (ret) { + kfree(ix->ctx.kname); + return ret; + } + + req->flags |=3D REQ_F_NEED_CLEANUP; + req->flags |=3D REQ_F_FORCE_ASYNC; + return 0; +} + +int io_fremovexattr(struct io_kiocb *req, unsigned int issue_flags) +{ + struct io_xattr *ix =3D io_kiocb_to_cmd(req, struct io_xattr); + int ret; + + WARN_ON_ONCE(issue_flags & IO_URING_F_NONBLOCK); + + ret =3D file_removexattr(req->file, ix->ctx.kname); + io_xattr_finish(req, ret); + return IOU_COMPLETE; +} + +int io_flistxattr_prep(struct io_kiocb *req, const struct io_uring_sqe *sq= e) +{ + struct io_xattr *ix =3D io_kiocb_to_cmd(req, struct io_xattr); + + INIT_DELAYED_FILENAME(&ix->filename); + ix->ctx.kname =3D NULL; + ix->ctx.kvalue =3D NULL; + + if (READ_ONCE(sqe->addr)) + return -EINVAL; + + ix->ctx.value =3D u64_to_user_ptr(READ_ONCE(sqe->addr2)); + ix->ctx.size =3D READ_ONCE(sqe->len); + ix->ctx.flags =3D READ_ONCE(sqe->xattr_flags); + + if (ix->ctx.flags) + return -EINVAL; + + req->flags |=3D REQ_F_NEED_CLEANUP; + req->flags |=3D REQ_F_FORCE_ASYNC; + return 0; +} + +int io_flistxattr(struct io_kiocb *req, unsigned int issue_flags) +{ + struct io_xattr *ix =3D io_kiocb_to_cmd(req, struct io_xattr); + int ret; + + WARN_ON_ONCE(issue_flags & IO_URING_F_NONBLOCK); + + ret =3D file_listxattr(req->file, ix->ctx.value, ix->ctx.size); + io_xattr_finish(req, ret); + return IOU_COMPLETE; +} diff --git a/io_uring/xattr.h b/io_uring/xattr.h index 9b459d2ae90c..d2487b49a5d2 100644 --- a/io_uring/xattr.h +++ b/io_uring/xattr.h @@ -13,3 +13,9 @@ int io_fgetxattr(struct io_kiocb *req, unsigned int issue= _flags); =20 int io_getxattr_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); int io_getxattr(struct io_kiocb *req, unsigned int issue_flags); + +int io_fremovexattr_prep(struct io_kiocb *req, const struct io_uring_sqe *= sqe); +int io_fremovexattr(struct io_kiocb *req, unsigned int issue_flags); + +int io_flistxattr_prep(struct io_kiocb *req, const struct io_uring_sqe *sq= e); +int io_flistxattr(struct io_kiocb *req, unsigned int issue_flags); diff --git a/tools/include/uapi/linux/io_uring.h b/tools/include/uapi/linux= /io_uring.h index f1c16f817742..79bf7c22009d 100644 --- a/tools/include/uapi/linux/io_uring.h +++ b/tools/include/uapi/linux/io_uring.h @@ -253,6 +253,19 @@ enum io_uring_op { IORING_OP_FUTEX_WAIT, IORING_OP_FUTEX_WAKE, IORING_OP_FUTEX_WAITV, + IORING_OP_FIXED_FD_INSTALL, + IORING_OP_FTRUNCATE, + IORING_OP_BIND, + IORING_OP_LISTEN, + IORING_OP_RECV_ZC, + IORING_OP_EPOLL_WAIT, + IORING_OP_READV_FIXED, + IORING_OP_WRITEV_FIXED, + IORING_OP_PIPE, + IORING_OP_NOP128, + IORING_OP_URING_CMD128, + IORING_OP_FREMOVEXATTR, + IORING_OP_FLISTXATTR, =20 /* this goes last, obviously */ IORING_OP_LAST, --=20 2.47.3