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vmm: preserve error chain for invalid memory path

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On-behalf-of: SAP philipp.schuster@sap.com
Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
This commit is contained in:
Philipp Schuster
2026-06-02 06:45:41 +02:00
committed by Rob Bradford
parent f607d0143d
commit 3fa29920e8
1 changed files with 5 additions and 1 deletions
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6
vmm/src/memory_manager.rs
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@@ -381,6 +381,10 @@ pub enum Error {
#[error("Memory configuration is not valid")]
InvalidMemoryParameters,
/// Memory backing path contains an interior NUL byte.
#[error("Memory backing path contains an interior NUL byte")]
InvalidMemoryPath(#[source] ffi::NulError),
/// Forbidden operation. Impossible to resize guest memory if it is
/// backed by user defined memory regions.
#[error("Impossible to resize guest memory if it is backed by user defined memory regions")]
@@ -495,7 +499,7 @@ fn mmio_address_space_size(phys_bits: u8) -> u64 {
//
// See: https://github.com/torvalds/linux/blob/v6.3/fs/hugetlbfs/inode.c#L1169
fn statfs_get_bsize(path: &str) -> Result<u64, Error> {
let path = std::ffi::CString::new(path).map_err(|_| Error::InvalidMemoryParameters)?;
let path = ffi::CString::new(path).map_err(Error::InvalidMemoryPath)?;
let mut buf = std::mem::MaybeUninit::<libc::statfs>::uninit();
// SAFETY: FFI call with a valid path and buffer