[pve-devel] applied: [PATCH proxmox-fuse-rs] add explicit "C" ABI to all extern function declarations
Wolfgang Bumiller
w.bumiller at proxmox.com
Mon Dec 22 12:24:14 CET 2025
applied, thanks
On Thu, Nov 13, 2025 at 10:13:01AM +0800, Kefu Chai wrote:
> This fixes deprecation warnings where extern function declarations
> did not explicitly specify the ABI. All extern fn types in the
> FUSE Operations struct now use `extern "C" fn` instead of `extern fn`.
>
> The C ABI is required for FUSE callbacks that interface with the
> native libfuse library.
>
> Signed-off-by: Kefu Chai <k.chai at proxmox.com>
> ---
> src/sys.rs | 86 +++++++++++++++++++++++++++---------------------------
> 1 file changed, 43 insertions(+), 43 deletions(-)
>
> diff --git a/src/sys.rs b/src/sys.rs
> index a08eece..17a01de 100644
> --- a/src/sys.rs
> +++ b/src/sys.rs
> @@ -113,49 +113,49 @@ default_to_none! {
> // The order in which the functions are listed matters, as the offset in the
> // struct defines what function the fuse driver uses.
> // It should therefore not be altered!
> - pub init: Option<extern fn(userdata: MutPtr)>,
> - pub destroy: Option<extern fn(userdata: MutPtr)>,
> - pub lookup: Option<extern fn(req: Request, parent: u64, name: StrPtr)>,
> - pub forget: Option<extern fn(req: Request, inode: u64, nlookup: u64)>,
> - pub getattr: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> - pub setattr: Option<extern fn(req: Request, inode: u64, attr: *const libc::stat, to_set: c_int, file_info: *const FuseFileInfo)>,
> - pub readlink: Option<extern fn(req: Request, inode: u64)>,
> - pub mknod: Option<extern fn(req: Request, parent: u64, name: StrPtr, mode: libc::mode_t, rdev: libc::dev_t)>,
> - pub mkdir: Option<extern fn(req: Request, parent: u64, name: StrPtr, mode: libc::mode_t)>,
> - pub unlink: Option<extern fn(req: Request, parent: u64, name: StrPtr)>,
> - pub rmdir: Option<extern fn(req: Request, parent: u64, name: StrPtr)>,
> - pub symlink: Option<extern fn(req: Request, link: StrPtr, parent: u64, name: StrPtr)>,
> - pub rename: Option<extern fn(req: Request, parent: u64, name: StrPtr, newparent: u64, newname: StrPtr, flags: c_int)>,
> - pub link: Option<extern fn(req: Request, inode: u64, newparent: u64, newname: StrPtr)>,
> - pub open: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> - pub read: Option<extern fn(req: Request, inode: u64, size: size_t, offset: libc::off_t, file_info: *const FuseFileInfo)>,
> - pub write: Option<extern fn(req: Request, inode: u64, buffer: *const u8, size: size_t, offset: libc::off_t, file_info: *const FuseFileInfo)>,
> - pub flush: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> - pub release: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> - pub fsync: Option<extern fn(req: Request, inode: u64, datasync: c_int, file_info: *const FuseFileInfo)>,
> - pub opendir: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> - pub readdir: Option<extern fn(req: Request, inode: u64, size: size_t, offset: off_t, file_info: *const FuseFileInfo)>,
> - pub releasedir: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> - pub fsyncdir: Option<extern fn(req: Request, inode: u64, datasync: c_int, file_info: *const FuseFileInfo)>,
> - pub statfs: Option<extern fn(req: Request, inode: u64)>,
> - pub setxattr: Option<extern fn(req: Request, inode: u64, name: StrPtr, value: StrPtr, size: size_t, flags: c_int)>,
> - pub getxattr: Option<extern fn(req: Request, inode: u64, name: StrPtr, size: size_t)>,
> - pub listxattr: Option<extern fn(req: Request, inode: u64, size: size_t)>,
> - pub removexattr: Option<extern fn(req: Request, inode: u64, name: StrPtr)>,
> - pub access: Option<extern fn(req: Request, inode: u64, mask: i32)>,
> - pub create: Option<extern fn(req: Request, parent: u64, name: StrPtr, mode: libc::mode_t, file_info: *const FuseFileInfo)>,
> - pub getlk: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo, lock: MutPtr)>,
> - pub setlk: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo, lock: MutPtr, sleep: c_int)>,
> - pub bmap: Option<extern fn(req: Request, inode: u64, blocksize: size_t, idx: u64)>,
> - pub ioctl: Option<extern fn(req: Request, inode: u64, cmd: c_int, arg: MutPtr, file_info: *const FuseFileInfo, flags: c_int, in_buf: ConstPtr, in_bufsz: size_t, out_bufsz: size_t)>,
> - pub poll: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo, pollhandle: MutPtr)>,
> - pub write_buf: Option<extern fn(req: Request, inode: u64, bufv: MutPtr, offset: libc::off_t, file_info: *const FuseFileInfo)>,
> - pub retrieve_reply: Option<extern fn(req: Request, cookie: ConstPtr, inode: u64, offset: libc::off_t, bufv: MutPtr)>,
> - pub forget_multi: Option<extern fn(req: Request, count: size_t, forgets: MutPtr)>,
> - pub flock: Option<extern fn(req: Request, inode: u64, file_info: *const FuseFileInfo, op: c_int)>,
> - pub fallocate: Option<extern fn(req: Request, inode: u64, mode: c_int, offset: libc::off_t, length: libc::off_t, file_info: *const FuseFileInfo)>,
> - pub readdirplus: Option<extern fn(req: Request, inode: u64, size: size_t, offset: off_t, file_info: *const FuseFileInfo)>,
> - pub copy_file_range: Option<extern fn(req: Request, ino_in: u64, off_in: libc::off_t, fi_in: *const FuseFileInfo, ino_out: u64, off_out: libc::off_t, fi_out: *const FuseFileInfo, len: size_t, flags: c_int)>,
> + pub init: Option<extern "C" fn(userdata: MutPtr)>,
> + pub destroy: Option<extern "C" fn(userdata: MutPtr)>,
> + pub lookup: Option<extern "C" fn(req: Request, parent: u64, name: StrPtr)>,
> + pub forget: Option<extern "C" fn(req: Request, inode: u64, nlookup: u64)>,
> + pub getattr: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> + pub setattr: Option<extern "C" fn(req: Request, inode: u64, attr: *const libc::stat, to_set: c_int, file_info: *const FuseFileInfo)>,
> + pub readlink: Option<extern "C" fn(req: Request, inode: u64)>,
> + pub mknod: Option<extern "C" fn(req: Request, parent: u64, name: StrPtr, mode: libc::mode_t, rdev: libc::dev_t)>,
> + pub mkdir: Option<extern "C" fn(req: Request, parent: u64, name: StrPtr, mode: libc::mode_t)>,
> + pub unlink: Option<extern "C" fn(req: Request, parent: u64, name: StrPtr)>,
> + pub rmdir: Option<extern "C" fn(req: Request, parent: u64, name: StrPtr)>,
> + pub symlink: Option<extern "C" fn(req: Request, link: StrPtr, parent: u64, name: StrPtr)>,
> + pub rename: Option<extern "C" fn(req: Request, parent: u64, name: StrPtr, newparent: u64, newname: StrPtr, flags: c_int)>,
> + pub link: Option<extern "C" fn(req: Request, inode: u64, newparent: u64, newname: StrPtr)>,
> + pub open: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> + pub read: Option<extern "C" fn(req: Request, inode: u64, size: size_t, offset: libc::off_t, file_info: *const FuseFileInfo)>,
> + pub write: Option<extern "C" fn(req: Request, inode: u64, buffer: *const u8, size: size_t, offset: libc::off_t, file_info: *const FuseFileInfo)>,
> + pub flush: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> + pub release: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> + pub fsync: Option<extern "C" fn(req: Request, inode: u64, datasync: c_int, file_info: *const FuseFileInfo)>,
> + pub opendir: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> + pub readdir: Option<extern "C" fn(req: Request, inode: u64, size: size_t, offset: off_t, file_info: *const FuseFileInfo)>,
> + pub releasedir: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo)>,
> + pub fsyncdir: Option<extern "C" fn(req: Request, inode: u64, datasync: c_int, file_info: *const FuseFileInfo)>,
> + pub statfs: Option<extern "C" fn(req: Request, inode: u64)>,
> + pub setxattr: Option<extern "C" fn(req: Request, inode: u64, name: StrPtr, value: StrPtr, size: size_t, flags: c_int)>,
> + pub getxattr: Option<extern "C" fn(req: Request, inode: u64, name: StrPtr, size: size_t)>,
> + pub listxattr: Option<extern "C" fn(req: Request, inode: u64, size: size_t)>,
> + pub removexattr: Option<extern "C" fn(req: Request, inode: u64, name: StrPtr)>,
> + pub access: Option<extern "C" fn(req: Request, inode: u64, mask: i32)>,
> + pub create: Option<extern "C" fn(req: Request, parent: u64, name: StrPtr, mode: libc::mode_t, file_info: *const FuseFileInfo)>,
> + pub getlk: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo, lock: MutPtr)>,
> + pub setlk: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo, lock: MutPtr, sleep: c_int)>,
> + pub bmap: Option<extern "C" fn(req: Request, inode: u64, blocksize: size_t, idx: u64)>,
> + pub ioctl: Option<extern "C" fn(req: Request, inode: u64, cmd: c_int, arg: MutPtr, file_info: *const FuseFileInfo, flags: c_int, in_buf: ConstPtr, in_bufsz: size_t, out_bufsz: size_t)>,
> + pub poll: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo, pollhandle: MutPtr)>,
> + pub write_buf: Option<extern "C" fn(req: Request, inode: u64, bufv: MutPtr, offset: libc::off_t, file_info: *const FuseFileInfo)>,
> + pub retrieve_reply: Option<extern "C" fn(req: Request, cookie: ConstPtr, inode: u64, offset: libc::off_t, bufv: MutPtr)>,
> + pub forget_multi: Option<extern "C" fn(req: Request, count: size_t, forgets: MutPtr)>,
> + pub flock: Option<extern "C" fn(req: Request, inode: u64, file_info: *const FuseFileInfo, op: c_int)>,
> + pub fallocate: Option<extern "C" fn(req: Request, inode: u64, mode: c_int, offset: libc::off_t, length: libc::off_t, file_info: *const FuseFileInfo)>,
> + pub readdirplus: Option<extern "C" fn(req: Request, inode: u64, size: size_t, offset: off_t, file_info: *const FuseFileInfo)>,
> + pub copy_file_range: Option<extern "C" fn(req: Request, ino_in: u64, off_in: libc::off_t, fi_in: *const FuseFileInfo, ino_out: u64, off_out: libc::off_t, fi_out: *const FuseFileInfo, len: size_t, flags: c_int)>,
> }
> }
>
> --
> 2.47.3
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