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x11: Assert that size >= buffer_size

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Luna 2023-04-24 20:31:39 -03:00
parent c68f41bf10
commit 5efa5d8898
1 changed files with 3 additions and 0 deletions
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3
src/x11.rs
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@ -540,6 +540,8 @@ struct ShmSegment {
impl ShmSegment { impl ShmSegment {
/// Create a new `ShmSegment` with the given size. /// Create a new `ShmSegment` with the given size.
fn new(size: usize, buffer_size: usize) -> io::Result<Self> { fn new(size: usize, buffer_size: usize) -> io::Result<Self> {
assert!(size >= buffer_size);
unsafe { unsafe {
// Create the shared memory segment. // Create the shared memory segment.
let id = shmget(IPC_PRIVATE, size, 0o600); let id = shmget(IPC_PRIVATE, size, 0o600);
@ -588,6 +590,7 @@ impl ShmSegment {
/// Set the size of the buffer for this shared memory segment. /// Set the size of the buffer for this shared memory segment.
fn set_buffer_size(&mut self, buffer_size: usize) { fn set_buffer_size(&mut self, buffer_size: usize) {
assert!(self.size >= buffer_size);
self.buffer_size = buffer_size self.buffer_size = buffer_size
} }