lxc-exporter/lib/file-statfs.rb
2024-01-20 23:22:35 +01:00

141 lines
3.3 KiB
Ruby

require 'fiddle'
require 'fiddle/import'
class File
module Statfs
Magics = {}
Line = <<~EOF
ADFS 0xadf5
AFFS 0xadff
AFS 0x5346414F
AUTOFS 0x0187
CODA 0x73757245
CRAMFS 0x28cd3d45
CRAMFS_WEND 0x453dcd28
DEBUGFS 0x64626720
SECURITYFS 0x73636673
SELINUX 0xf97cff8c
SMACK 0x43415d53
RAMFS 0x858458f6
TMPFS 0x01021994
HUGETLBFS 0x958458f6
SQUASHFS 0x73717368
ECRYPTFS 0xf15f
EFS 0x414A53
EROFS_V1 0xE0F5E1E2
EXT2 0xEF53
EXT3 0xEF53
XENFS 0xabba1974
EXT4 0xEF53
BTRFS 0x9123683E
NILFS 0x3434
F2FS 0xF2F52010
HPFS 0xf995e849
ISOFS 0x9660
JFFS2 0x72b6
XFS 0x58465342
PSTOREFS 0x6165676C
EFIVARFS 0xde5e81e4
HOSTFS 0x00c0ffee
OVERLAYFS 0x794c7630
MINIX 0x137F
MINIX2 0x138F
MINIX2 0x2468
MINIX22 0x2478
MINIX3 0x4d5a
MSDOS 0x4d44
NCP 0x564c
NFS 0x6969
OCFS2 0x7461636f
OPENPROM 0x9fa1
QNX4 0x002f
QNX6 0x68191122
AFS_FS 0x6B414653
REISERFS 0x52654973
REISERFS "ReIsErFs"
REISER2FS "ReIsEr2Fs"
REISER2FS_JR "ReIsEr3Fs"
SMB 0x517B
CGROUP 0x27e0eb
CGROUP2 0x63677270
RDTGROUP 0x7655821
STACK_END 0x57AC6E9D
TRACEFS 0x74726163
V9FS 0x01021997
BDEVFS 0x62646576
DAXFS 0x64646178
BINFMTFS 0x42494e4d
DEVPTS 0x1cd1
BINDERFS 0x6c6f6f70
FUTEXFS 0xBAD1DEA
PIPEFS 0x50495045
PROC 0x9fa0
SOCKFS 0x534F434B
SYSFS 0x62656572
USBDEVICE 0x9fa2
MTD_INODE_FS 0x11307854
ANON_INODE_FS 0x09041934
BTRFS_TEST 0x73727279
NSFS 0x6e736673
BPF_FS 0xcafe4a11
AAFS 0x5a3c69f0
ZONEFS 0x5a4f4653
UDF 0x15013346
BALLOON_KVM 0x13661366
ZSMALLOC 0x58295829
DMA_BUF 0x444d4142
DEVMEM 0x454d444d
Z3FOLD 0x33
PPC_CMM 0xc7571590
EOF
Line.each_line do |l|
n, v = l.split(/\s+/)[0..1]
v =
case v
when /^0x(\h+)$/ then $1.to_i 16
when /^"([^"]+)"$/ then $1
else raise "Unknown value: #$1"
end
Magics[v] = n.downcase.to_sym
end
extend Fiddle::Importer
dlload Fiddle.dlopen( nil)
Struct_statfs = struct <<~EOS
long type,
long bsize,
unsigned long blocks,
unsigned long bfree,
unsigned long bavail,
unsigned long files,
unsigned long ffree,
int fsid[2],
long namelen,
long frsize,
long flags,
long spare[4]
EOS
class Struct_statfs
def fstypename
Magics[type]
end
def to_h
{type: type, fstypename: fstypename, bsize: bsize, blocks: blocks, bfree: bfree, bavail: bavail, files: files, ffree: ffree, fsid: fsid, namelen: namelen, frsize: frsize, flags: flags, spare: spare}
end
end
StatfsFun = Fiddle::Function.new handler['statfs'], [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP], Fiddle::TYPE_INT
#extern 'int statfs( const char *__file, struct statfs *__buf)'
def self.new file
buf = Struct_statfs.malloc
val = StatfsFun.call file, buf
raise SystemCallError.new( "statfs(#{file.inspect})", Fiddle.last_error) unless val == 0
buf
end
end
end