minibsod, fix clippy warning (#1424)
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David CARLIER
GitHub
parent
0be4847cb7
commit
bc42880274
@ -620,6 +620,130 @@ fn write_crash<W: Write>(
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Ok(())
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}
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#[cfg(any(target_os = "linux", target_os = "android"))]
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fn write_minibsod<W: Write>(writer: &mut BufWriter<W>) -> Result<(), std::io::Error> {
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match std::fs::read_to_string("/proc/self/maps") {
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Ok(maps) => writer.write_all(maps.as_bytes())?,
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Err(e) => writeln!(writer, "Couldn't load mappings: {e:?}")?,
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};
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Ok(())
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}
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#[cfg(target_os = "freebsd")]
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fn write_minibsod<W: Write>(writer: &mut BufWriter<W>) -> Result<(), std::io::Error> {
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let mut s: usize = 0;
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let arr = &[libc::CTL_KERN, libc::KERN_PROC, libc::KERN_PROC_VMMAP, -1];
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let mib = arr.as_ptr();
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let miblen = arr.len() as u32;
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if unsafe {
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libc::sysctl(
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mib,
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miblen,
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std::ptr::null_mut(),
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&mut s,
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std::ptr::null_mut(),
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0,
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)
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} == 0
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{
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s = s * 4 / 3;
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let mut buf: std::boxed::Box<[u8]> = vec![0; s].into_boxed_slice();
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let bufptr = buf.as_mut_ptr() as *mut libc::c_void;
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if unsafe { libc::sysctl(mib, miblen, bufptr, &mut s, std::ptr::null_mut(), 0) } == 0 {
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let mut start = bufptr as usize;
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let end = start + s;
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unsafe {
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while start < end {
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let entry = start as *mut u8 as *mut libc::kinfo_vmentry;
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let sz = (*entry).kve_structsize;
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if sz == 0 {
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break;
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}
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let i = format!(
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"{}-{} {:?}\n",
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(*entry).kve_start,
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(*entry).kve_end,
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(*entry).kve_path
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);
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writer.write(&i.into_bytes())?;
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start = start + sz as usize;
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}
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}
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} else {
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return Err(std::io::Error::last_os_error());
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}
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} else {
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return Err(std::io::Error::last_os_error());
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}
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Ok(())
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}
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#[cfg(target_os = "openbsd")]
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fn write_minibsod<W: Write>(writer: &mut BufWriter<W>) -> Result<(), std::io::Error> {
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let mut pentry = std::mem::MaybeUninit::<libc::kinfo_vmentry>::uninit();
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let mut s = std::mem::size_of::<libc::kinfo_vmentry>();
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let arr = &[libc::CTL_KERN, libc::KERN_PROC_VMMAP, unsafe {
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libc::getpid()
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}];
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let mib = arr.as_ptr();
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let miblen = arr.len() as u32;
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unsafe { (*pentry.as_mut_ptr()).kve_start = 0 };
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if unsafe {
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libc::sysctl(
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mib,
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miblen,
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pentry.as_mut_ptr() as *mut libc::c_void,
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&mut s,
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std::ptr::null_mut(),
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0,
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)
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} == 0
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{
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let end: u64 = s as u64;
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unsafe {
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let mut entry = pentry.assume_init();
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while libc::sysctl(
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mib,
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miblen,
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&mut entry as *mut libc::kinfo_vmentry as *mut libc::c_void,
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&mut s,
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std::ptr::null_mut(),
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0,
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) == 0
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{
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if entry.kve_end == end {
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break;
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}
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// OpenBSD's vm mappings have no knowledge of their paths on disk
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let i = format!("{}-{}\n", entry.kve_start, entry.kve_end);
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writer.write(&i.into_bytes())?;
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entry.kve_start = entry.kve_start + 1;
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}
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}
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} else {
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return Err(std::io::Error::last_os_error());
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}
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Ok(())
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}
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#[cfg(not(any(
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target_os = "freebsd",
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target_os = "openbsd",
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any(target_os = "linux", target_os = "android"),
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)))]
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fn write_minibsod<W: Write>(writer: &mut BufWriter<W>) -> Result<(), std::io::Error> {
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// TODO for other platforms
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// Note that for apple, types might not be entirely mapped in libc due to mach crate.
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writeln!(writer, "{:━^100}", " / ")?;
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Ok(())
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}
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/// Generates a mini-BSOD given a signal and context.
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#[cfg(unix)]
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#[allow(clippy::non_ascii_literal)]
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@ -635,115 +759,8 @@ pub fn generate_minibsod<W: Write>(
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dump_registers(writer, ucontext)?;
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writeln!(writer, "{:━^100}", " BACKTRACE ")?;
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writeln!(writer, "{:?}", backtrace::Backtrace::new())?;
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#[cfg(any(target_os = "linux", target_os = "android"))]
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{
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writeln!(writer, "{:━^100}", " MAPS ")?;
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match std::fs::read_to_string("/proc/self/maps") {
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Ok(maps) => writer.write_all(maps.as_bytes())?,
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Err(e) => writeln!(writer, "Couldn't load mappings: {e:?}")?,
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};
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}
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#[cfg(target_os = "freebsd")]
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{
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let mut s: usize = 0;
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let arr = &[libc::CTL_KERN, libc::KERN_PROC, libc::KERN_PROC_VMMAP, -1];
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let mib = arr.as_ptr();
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let miblen = arr.len() as u32;
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if unsafe {
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libc::sysctl(
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mib,
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miblen,
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std::ptr::null_mut(),
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&mut s,
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std::ptr::null_mut(),
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0,
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)
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} == 0
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{
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s = s * 4 / 3;
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let mut buf: std::boxed::Box<[u8]> = vec![0; s].into_boxed_slice();
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let bufptr = buf.as_mut_ptr() as *mut libc::c_void;
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if unsafe { libc::sysctl(mib, miblen, bufptr, &mut s, std::ptr::null_mut(), 0) } == 0 {
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let mut start = bufptr as usize;
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let end = start + s;
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unsafe {
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while start < end {
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let entry = start as *mut u8 as *mut libc::kinfo_vmentry;
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let sz = (*entry).kve_structsize;
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if sz == 0 {
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break;
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}
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let i = format!(
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"{}-{} {:?}\n",
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(*entry).kve_start,
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(*entry).kve_end,
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(*entry).kve_path
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);
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writer.write(&i.into_bytes())?;
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start = start + sz as usize;
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}
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}
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} else {
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return Err(std::io::Error::last_os_error());
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}
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} else {
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return Err(std::io::Error::last_os_error());
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}
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}
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#[cfg(target_os = "openbsd")]
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{
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let mut pentry = std::mem::MaybeUninit::<libc::kinfo_vmentry>::uninit();
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let mut s = std::mem::size_of::<libc::kinfo_vmentry>();
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let arr = &[libc::CTL_KERN, libc::KERN_PROC_VMMAP, unsafe {
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libc::getpid()
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}];
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let mib = arr.as_ptr();
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let miblen = arr.len() as u32;
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unsafe { (*pentry.as_mut_ptr()).kve_start = 0 };
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if unsafe {
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libc::sysctl(
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mib,
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miblen,
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pentry.as_mut_ptr() as *mut libc::c_void,
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&mut s,
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std::ptr::null_mut(),
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0,
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)
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} == 0
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{
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let end: u64 = s as u64;
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unsafe {
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let mut entry = pentry.assume_init();
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while libc::sysctl(
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mib,
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miblen,
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&mut entry as *mut libc::kinfo_vmentry as *mut libc::c_void,
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&mut s,
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std::ptr::null_mut(),
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0,
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) == 0
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{
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if entry.kve_end == end {
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break;
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}
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// OpenBSD's vm mappings have no knowledge of their paths on disk
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let i = format!("{}-{}\n", entry.kve_start, entry.kve_end);
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writer.write(&i.into_bytes())?;
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entry.kve_start = entry.kve_start + 1;
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}
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}
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} else {
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return Err(std::io::Error::last_os_error());
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}
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}
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Ok(())
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writeln!(writer, "{:━^100}", " MAPS ")?;
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write_minibsod(writer)
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}
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#[cfg(test)]
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