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fix(utils): map remaining Linux uapi filesystem magic values

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Map the remaining stable Linux uapi filesystem magic constants and keep values without a stable uapi source explicitly unknown.
This commit is contained in:
Zhengchao An
2026-07-09 04:52:43 +08:00
committed by GitHub
parent 05890d6e25
commit e468648f0f
1 changed files with 60 additions and 10 deletions
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crates/utils/src/os/fs_type.rs
+60 -10
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@@ -14,16 +14,8 @@
/// Returns the filesystem type of the underlying mounted filesystem.
///
/// TODO: Verify these less common magic values against stable Linux headers or
/// filesystem documentation before adding them:
///
/// "137d" => "EXT",
/// "4244" => "HFS",
/// "5346544e" => "NTFS",
/// "61756673" => "AUFS",
/// "ef51" => "EXT2OLD",
/// "2fc12fc1" => "zfs",
/// "53464846" => "wslfs",
/// The table follows Linux `include/uapi/linux/magic.h`; filesystem magic
/// values without a stable Linux uapi source stay `UNKNOWN`.
#[allow(dead_code)]
pub(crate) fn get_fs_type(fs_type: u64) -> &'static str {
// Magic numbers for various filesystems.
@@ -36,6 +28,7 @@ pub(crate) fn get_fs_type(fs_type: u64) -> &'static str {
0x4d44 => "MSDOS",
0x6969 => "NFS",
0xEF53 => "EXT4",
0xabba1974 => "XENFS",
0xf15f => "ecryptfs",
0x794c7630 => "overlayfs",
0x52654973 => "REISERFS",
@@ -76,8 +69,34 @@ pub(crate) fn get_fs_type(fs_type: u64) -> &'static str {
0xFE534D42 => "SMB2",
0x27e0eb => "CGROUP",
0x63677270 => "CGROUP2",
0x7655821 => "RDTGROUP",
0x74726163 => "TRACEFS",
0x01021997 => "V9FS",
0x62646576 => "BDEVFS",
0x64646178 => "DAXFS",
0x42494e4d => "BINFMTFS",
0x1cd1 => "DEVPTS",
0x6c6f6f70 => "BINDERFS",
0x0BAD1DEA => "FUTEXFS",
0x50495045 => "PIPEFS",
0x9fa0 => "PROC",
0x534F434B => "SOCKFS",
0x62656572 => "SYSFS",
0x9fa2 => "USBDEVICE",
0x11307854 => "MTD_INODE_FS",
0x09041934 => "ANON_INODE_FS",
0x73727279 => "BTRFS_TEST",
0x6e736673 => "NSFS",
0xcafe4a11 => "BPF",
0x5a3c69f0 => "AAFS",
0x5a4f4653 => "ZONEFS",
0x15013346 => "UDF",
0x444d4142 => "DMA_BUF",
0x454d444d => "DEVMEM",
0x5345434d => "SECRETMEM",
0x50494446 => "PIDFS",
0x474d454d => "GUEST_MEMFD",
0x4E554C4C => "NULLFS",
0xca451a4e => "BCACHEFS",
_ => "UNKNOWN",
}
@@ -142,4 +161,35 @@ mod tests {
assert_eq!(get_fs_type(0x01021997), "V9FS");
assert_eq!(get_fs_type(0xca451a4e), "BCACHEFS");
}
#[test]
fn map_remaining_linux_uapi_filesystem_magic_numbers() {
assert_eq!(get_fs_type(0xabba1974), "XENFS");
assert_eq!(get_fs_type(0x7655821), "RDTGROUP");
assert_eq!(get_fs_type(0x62646576), "BDEVFS");
assert_eq!(get_fs_type(0x64646178), "DAXFS");
assert_eq!(get_fs_type(0x42494e4d), "BINFMTFS");
assert_eq!(get_fs_type(0x1cd1), "DEVPTS");
assert_eq!(get_fs_type(0x6c6f6f70), "BINDERFS");
assert_eq!(get_fs_type(0x0BAD1DEA), "FUTEXFS");
assert_eq!(get_fs_type(0x50495045), "PIPEFS");
assert_eq!(get_fs_type(0x9fa0), "PROC");
assert_eq!(get_fs_type(0x534F434B), "SOCKFS");
assert_eq!(get_fs_type(0x62656572), "SYSFS");
assert_eq!(get_fs_type(0x9fa2), "USBDEVICE");
assert_eq!(get_fs_type(0x11307854), "MTD_INODE_FS");
assert_eq!(get_fs_type(0x09041934), "ANON_INODE_FS");
assert_eq!(get_fs_type(0x73727279), "BTRFS_TEST");
assert_eq!(get_fs_type(0x6e736673), "NSFS");
assert_eq!(get_fs_type(0xcafe4a11), "BPF");
assert_eq!(get_fs_type(0x5a3c69f0), "AAFS");
assert_eq!(get_fs_type(0x5a4f4653), "ZONEFS");
assert_eq!(get_fs_type(0x15013346), "UDF");
assert_eq!(get_fs_type(0x444d4142), "DMA_BUF");
assert_eq!(get_fs_type(0x454d444d), "DEVMEM");
assert_eq!(get_fs_type(0x5345434d), "SECRETMEM");
assert_eq!(get_fs_type(0x50494446), "PIDFS");
assert_eq!(get_fs_type(0x474d454d), "GUEST_MEMFD");
assert_eq!(get_fs_type(0x4E554C4C), "NULLFS");
}
}