Add the missing FIEMAP ioctl constants for loongarch64

[wszqkzqk]

The pre-generated loongarch-ioctls.txt list is missing the FIEMAP constants that list.c emits for the other architectures, so the generated loongarch64 bindings lack FIEMAP_MAX_OFFSET, FIEMAP_FLAG_*, and all the FIEMAP_EXTENT_* flags. This breaks downstream users of these constants on loongarch64, found on building uv 0.12.5's uv-fs crate.

The added values are the arch-independent UAPI constants from include/uapi/linux/fiemap.h.

See also bytecodealliance/rustix#1664

[k0tran]

Hi! I'm interested getting this merged too! Though it seems that the current changes only modify generated part and miss the generator. I would suggest adding something like this:

--- a/src/loongarch64/ioctl.rs
+++ b/src/loongarch64/ioctl.rs
@@ -104,6 +104,22 @@ pub const BLKDISCARDZEROES: u32 = 4732;
 pub const BLKSECDISCARD: u32 = 4733;
 pub const BLKROTATIONAL: u32 = 4734;
 pub const BLKZEROOUT: u32 = 4735;
+pub const FIEMAP_MAX_OFFSET: u32 = 18446744073709551615;
+pub const FIEMAP_FLAG_SYNC: u32 = 1;
+pub const FIEMAP_FLAG_XATTR: u32 = 2;
+pub const FIEMAP_FLAG_CACHE: u32 = 4;
+pub const FIEMAP_FLAGS_COMPAT: u32 = 3;
+pub const FIEMAP_EXTENT_LAST: u32 = 1;
+pub const FIEMAP_EXTENT_UNKNOWN: u32 = 2;
+pub const FIEMAP_EXTENT_DELALLOC: u32 = 4;
+pub const FIEMAP_EXTENT_ENCODED: u32 = 8;
+pub const FIEMAP_EXTENT_DATA_ENCRYPTED: u32 = 128;
+pub const FIEMAP_EXTENT_NOT_ALIGNED: u32 = 256;
+pub const FIEMAP_EXTENT_DATA_INLINE: u32 = 512;
+pub const FIEMAP_EXTENT_DATA_TAIL: u32 = 1024;
+pub const FIEMAP_EXTENT_UNWRITTEN: u32 = 2048;
+pub const FIEMAP_EXTENT_MERGED: u32 = 4096;
+pub const FIEMAP_EXTENT_SHARED: u32 = 8192;
 pub const UFFDIO_REGISTER: u32 = 3223366144;
 pub const UFFDIO_UNREGISTER: u32 = 2148575745;
 pub const UFFDIO_WAKE: u32 = 2148575746;