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feat: add error message to creating memfd

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This commit is contained in:
Aaron Kaiser
2024-05-15 13:11:09 +02:00
parent 0200b3c913
commit 9ec0b728c2
1 changed files with 4 additions and 1 deletions
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5
src/bump_allocator.rs
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@@ -3,7 +3,7 @@ use std::{
usize, usize,
}; };
use libc::{c_void, ftruncate, mmap, syscall, SYS_memfd_secret, MAP_FAILED, MAP_SHARED, PROT_READ, PROT_WRITE}; use libc::{c_char, c_void, ftruncate, mmap, perror, syscall, SYS_memfd_secret, MAP_FAILED, MAP_SHARED, PROT_READ, PROT_WRITE};
pub(crate) const MEMFD_INITIAL_SIZE: usize = 1024 * 1024; pub(crate) const MEMFD_INITIAL_SIZE: usize = 1024 * 1024;
const MMAP_SIZE: usize = 1024 * 1024; const MMAP_SIZE: usize = 1024 * 1024;
@@ -27,6 +27,9 @@ impl BumpAllocator {
assert!(MMAP_SIZE >= MEMFD_INITIAL_SIZE); assert!(MMAP_SIZE >= MEMFD_INITIAL_SIZE);
let data_fd = syscall(SYS_memfd_secret, 0) as i32; let data_fd = syscall(SYS_memfd_secret, 0) as i32;
if data_fd <= 0 {
perror("memfd secret\x00".as_ptr() as *const c_char);
}
assert!(data_fd > 0); assert!(data_fd > 0);