Struct solana_rbpf::syscalls::BpfStrCmp

pub struct BpfStrCmp {}

C-like strcmp, return 0 if the strings are equal, and a non-null value otherwise.

Examples

use solana_rbpf::syscalls::{BpfStrCmp, Result};
use solana_rbpf::memory_region::{MemoryRegion, MemoryMapping};
use solana_rbpf::vm::{Config, SyscallObject};

let foo = "This is a string.";
let bar = "This is another sting.";
let va_foo = 0x1000;
let va_bar = 0x2000;
let mut result: Result = Ok(0);
let memory_mapping = [MemoryRegion::new_from_slice(foo.as_bytes(), va_foo, 0, false)];
BpfStrCmp::call(&mut BpfStrCmp {}, va_foo, va_foo, 0, 0, 0, &MemoryMapping::new(memory_mapping.to_vec(), &Config::default()), &mut result);
assert!(result.unwrap() == 0);
let mut result: Result = Ok(0);
let memory_mapping = [MemoryRegion::new_from_slice(foo.as_bytes(), va_foo, 0, false), MemoryRegion::new_from_slice(bar.as_bytes(), va_bar, 0, false)];
BpfStrCmp::call(&mut BpfStrCmp {}, va_foo, va_bar, 0, 0, 0, &MemoryMapping::new(memory_mapping.to_vec(), &Config::default()), &mut result);
assert!(result.unwrap() != 0);

Trait Implementations

impl SyscallObject<UserError> for BpfStrCmp

fn call(
    &mut self,
    arg1: u64,
    arg2: u64,
    _arg3: u64,
    _arg4: u64,
    _arg5: u64,
    memory_mapping: &MemoryMapping<'_>,
    result: &mut Result
)

Call the syscall function