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vecs: add linux punch hole impl

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This commit is contained in:
nym21
2025-07-26 23:35:23 +02:00
parent be9569f3fb
commit 4814c1971d
1 changed files with 29 additions and 3 deletions
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32
crates/brk_vecs/src/file/mod.rs
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@@ -475,15 +475,15 @@ impl File {
fn punch_hole(&self, start: u64, length: u64) -> Result<()> {
let file = self.file.write();
Self::punch_hole_macos(&file, start, length)
Self::punch_hole_impl(&file, start, length)
}
fn punch_hole_(file: &fs::File, start: u64, length: u64) -> Result<()> {
Self::punch_hole_macos(file, start, length)
Self::punch_hole_impl(file, start, length)
}
#[cfg(target_os = "macos")]
fn punch_hole_macos(file: &fs::File, start: u64, length: u64) -> Result<()> {
fn punch_hole_impl(file: &fs::File, start: u64, length: u64) -> Result<()> {
let fpunchhole = FPunchhole {
fp_flags: 0,
reserved: 0,
@@ -506,6 +506,32 @@ impl File {
Ok(())
}
#[cfg(target_os = "linux")]
fn punch_hole_impl(file: &fs::File, start: u64, length: u64) -> Result<()> {
let result = unsafe {
libc::fallocate(
file.as_raw_fd(),
libc::FALLOC_FL_PUNCH_HOLE | libc::FALLOC_FL_KEEP_SIZE,
start as libc::off_t,
length as libc::off_t,
)
};
if result == -1 {
let err = std::io::Error::last_os_error();
return Err(Error::String(format!("Failed to punch hole: {err}")));
}
Ok(())
}
#[cfg(not(any(target_os = "macos", target_os = "linux")))]
fn punch_hole_impl(_file: &fs::File, _start: u64, _length: u64) -> Result<()> {
Err(Error::String(
"Hole punching not supported on this platform".to_string(),
))
}
}
#[repr(C)]