libbpf / libbpf-rs Goto Github PK

     Running `/usr/bin/rustc --crate-name cargo_libbpf --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C opt-level=3 -C embed-bitcode=no --test -C metadata=0eca454eb3e06fda -C extra-filename=-0eca454eb3e06fda --out-dir /builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps -L dependency=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps --extern anyhow=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libanyhow-f52d6e2d8b872bc9.rlib --extern cargo_metadata=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libcargo_metadata-201286cef2c0f393.rlib --extern goblin=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libgoblin-0ee0c613fd9ed025.rlib --extern libbpf_cargo=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/liblibbpf_cargo-555dbf843feae080.rlib --extern libbpf_sys=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/liblibbpf_sys-03751eec0e5e8d63.rlib --extern memmap=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libmemmap-6b80da01316dd249.rlib --extern num_enum=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libnum_enum-92ef6d87fed9e797.rlib --extern regex=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libregex-e5e411dbb90962d5.rlib --extern scroll=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libscroll-ae68cbd995482dd6.rlib --extern scroll_derive=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libscroll_derive-58cac732bd0f41b2.so --extern semver=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libsemver-e24cc60083843439.rlib --extern serde=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libserde-a2f925a616df0a1a.rlib --extern serde_json=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libserde_json-f64fb15ed2340581.rlib --extern structopt=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libstructopt-0605240d071edd38.rlib --extern tempfile=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libtempfile-b2db7dd4d4b67661.rlib --extern thiserror=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libthiserror-7848cb14d8adb2c2.rlib -Copt-level=3 -Cdebuginfo=2 -Clink-arg=-Wl,-z,relro,-z,now -Ccodegen-units=1 --cap-lints=warn -L native=/usr/lib64 -L native=/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/build/libbpf-sys-96b26f105dc6b24f/out`
    Finished release [optimized] target(s) in 35.15s
     Running `/builddir/build/BUILD/libbpf-cargo-0.7.0/target/release/deps/libbpf_cargo-9b34da430701d3e1`

running 32 tests
test build::test_extract_version ... ok
test test::test_btf_dump_definition_anon_enum ... ok
test test::test_btf_dump_definition_datasec_multiple ... ok
test test::test_btf_dump_definition_datasec ... ok
test test::test_btf_dump_basic_long_array ... ok
test test::test_btf_dump_basic ... ok
test test::test_btf_dump_definition_datasec_long_array ... ok
test test::test_btf_dump_definition_bitfield_struct_fails ... ok
test test::test_btf_dump_definition_datasec_multiple_long_array ... ok
test test::test_btf_dump_definition_packed_struct ... ok
test test::test_btf_dump_definition_shared_dependent_types ... ok
test test::test_btf_dump_definition_packed_struct_long_array ... ok
test test::test_btf_dump_definition_enum ... ok
test test::test_btf_dump_definition_struct_inner_anon_union ... ok
test test::test_btf_dump_definition_struct_inner_anon_struct ... ok
test test::test_btf_dump_definition_struct_inner_anon_struct_and_union ... ok
test test::test_btf_dump_definition_union ... ok
test test::test_build_workspace_collision ... ok
test test::test_build_custom ... ok
test test::test_build_invalid_prog ... ok
test test::test_build_workspace ... ok
test test::test_build_default ... ok
test test::test_enforce_file_extension ... ok
test test::test_btf_dump_struct_definition ... ok
test test::test_skeleton_builder_clang_opts ... ok
test test::test_btf_dump_struct_definition_long_array ... ok
libbpf: elf: skipping unrecognized data section(13) .eh_frame
libbpf: elf: skipping relo section(14) .rel.eh_frame for section(13) .eh_frame
libbpf: elf: skipping unrecognized data section(13) .eh_frame
libbpf: elf: skipping relo section(14) .rel.eh_frame for section(13) .eh_frame
libbpf: elf: skipping unrecognized data section(13) .eh_frame
libbpf: elf: skipping relo section(14) .rel.eh_frame for section(13) .eh_frame
libbpf: elf: skipping unrecognized data section(13) .eh_frame
libbpf: elf: skipping relo section(14) .rel.eh_frame for section(13) .eh_frame
test test::test_skeleton_builder_basic ... FAILED
libbpf: elf: skipping unrecognized data section(14) .eh_frame
libbpf: elf: skipping relo section(15) .rel.eh_frame for section(14) .eh_frame
libbpf: elf: skipping unrecognized data section(14) .eh_frame
libbpf: elf: skipping relo section(15) .rel.eh_frame for section(14) .eh_frame
test test::test_make_basic has been running for over 60 seconds
test test::test_make_workspace has been running for over 60 seconds
test test::test_skeleton_basic has been running for over 60 seconds
test test::test_skeleton_datasec has been running for over 60 seconds
test test::test_skeleton_empty_source has been running for over 60 seconds
test test::test_make_basic ... ok
test test::test_make_workspace ... ok
test test::test_skeleton_empty_source ... FAILED
test test::test_skeleton_basic ... FAILED
test test::test_skeleton_datasec ... FAILED

failures:

---- test::test_skeleton_builder_basic stdout ----
clang is version 12.0.0
Building /tmp/.tmpZwVfSx/proj/src/bpf/prog.bpf.c
Warning: unrecognized map: .maps
thread 'test::test_skeleton_builder_basic' panicked at 'failed to canonicalize libbpf-rs: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/test.rs:112:10
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

---- test::test_skeleton_empty_source stdout ----
Metadata for package=proj
	null
Found bpf progs to compile:
	UnprocessedObj { package: "proj", path: "/tmp/.tmp3rhryw/proj/src/bpf/prog.bpf.c", out: "/tmp/.tmp3rhryw/proj/target/bpf", name: "prog" }
Building /tmp/.tmp3rhryw/proj/src/bpf/prog.bpf.c
Metadata for package=proj
	null
Found bpf objs to gen skel:
	UnprocessedObj { package: "proj", path: "/tmp/.tmp3rhryw/proj/src/bpf/prog.bpf.c", out: "/tmp/.tmp3rhryw/proj/target/bpf", name: "prog" }
thread 'test::test_skeleton_empty_source' panicked at 'failed to canonicalize libbpf-rs: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/test.rs:112:10

---- test::test_skeleton_basic stdout ----
Metadata for package=proj
	null
Found bpf progs to compile:
	UnprocessedObj { package: "proj", path: "/tmp/.tmpf9kfDw/proj/src/bpf/prog.bpf.c", out: "/tmp/.tmpf9kfDw/proj/target/bpf", name: "prog" }
Building /tmp/.tmpf9kfDw/proj/src/bpf/prog.bpf.c
Metadata for package=proj
	null
Found bpf objs to gen skel:
	UnprocessedObj { package: "proj", path: "/tmp/.tmpf9kfDw/proj/src/bpf/prog.bpf.c", out: "/tmp/.tmpf9kfDw/proj/target/bpf", name: "prog" }
Warning: unrecognized map: .maps
thread 'test::test_skeleton_basic' panicked at 'failed to canonicalize libbpf-rs: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/test.rs:112:10

---- test::test_skeleton_datasec stdout ----
Metadata for package=proj
	null
Found bpf progs to compile:
	UnprocessedObj { package: "proj", path: "/tmp/.tmpcwUAUo/proj/src/bpf/prog.bpf.c", out: "/tmp/.tmpcwUAUo/proj/target/bpf", name: "prog" }
Building /tmp/.tmpcwUAUo/proj/src/bpf/prog.bpf.c
Metadata for package=proj
	null
Found bpf objs to gen skel:
	UnprocessedObj { package: "proj", path: "/tmp/.tmpcwUAUo/proj/src/bpf/prog.bpf.c", out: "/tmp/.tmpcwUAUo/proj/target/bpf", name: "prog" }
thread 'test::test_skeleton_datasec' panicked at 'failed to canonicalize libbpf-rs: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/test.rs:112:10


failures:
    test::test_skeleton_basic
    test::test_skeleton_builder_basic
    test::test_skeleton_datasec
    test::test_skeleton_empty_source

test result: FAILED. 28 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 126.61s

Program received signal SIGSEGV, Segmentation fault.
__GI___libc_free (mem=0x1) at malloc.c:3102
3102	malloc.c: No such file or directory.

==43153== Invalid free() / delete / delete[] / realloc()
==43153==    at 0x483CA3F: free (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==43153==    by 0x19942D: alloc::alloc::dealloc (alloc.rs:104)
==43153==    by 0x19981C: <alloc::alloc::Global as core::alloc::Allocator>::deallocate (alloc.rs:239)
==43153==    by 0x19952B: alloc::alloc::box_free (alloc.rs:334)
==43153==    by 0x19ABA0: core::ptr::drop_in_place (mod.rs:179)
==43153==    by 0x19B917: <libbpf_rs::perf_buffer::CbStruct as core::ops::drop::Drop>::drop (/home/vagrant/.cargo/registry/src/github.com-1ecc6299db9ec823/libbpf-rs-0.7.0/src/perf_buffer.rs:22)
==43153==    by 0x1703AE: core::ptr::drop_in_place (mod.rs:179)
==43153==    by 0x1702FB: core::ptr::drop_in_place (mod.rs:179)
==43153==    by 0x1709A0: core::ptr::drop_in_place (mod.rs:179)
==43153==    by 0x1814F9: syscalls::sys_snoop::SyscallSnooper::new (src/sys_snoop.rs:66)
==43153==    by 0x139AFE: syscalls::main (src/main.rs:43)
==43153==    by 0x13848A: core::ops::function::FnOnce::call_once (function.rs:227)
==43153==  Address 0x1 is not stack'd, malloc'd or (recently) free'd
==43153==

#[test]
fn test_btf_dump_definition_struct_inner_union() {
    let (_dir, proj_dir, cargo_toml) = setup_temp_project();

    // Add prog dir
    create_dir(proj_dir.join("src/bpf")).expect("failed to create prog dir");

    // Add a prog
    let mut prog = OpenOptions::new()
        .write(true)
        .create(true)
        .open(proj_dir.join("src/bpf/prog.bpf.c"))
        .expect("failed to open prog.bpf.c");

    write!(
        prog,
        r#"
        #include "vmlinux.h"
        #include "bpf_helpers.h"

        struct Foo {{
            int x;
            union Bar {{
                u8 y[10];
                u16 z[16];
            }};
        }};

        struct Foo foo;
        "#,
    )
    .expect("failed to write prog.bpf.c");

    // Lay down the necessary header files
    add_bpf_headers(&proj_dir);

    // Build the .bpf.o
    assert_eq!(
        build(true, Some(&cargo_toml), Path::new("/bin/clang"), true),
        0
    );

    let obj = OpenOptions::new()
        .read(true)
        .open(proj_dir.as_path().join("target/bpf/prog.bpf.o").as_path())
        .expect("failed to open object file");
    let mmap = unsafe { Mmap::map(&obj) }.expect("Failed to mmap object file");
    let btf = Btf::new("prog", &*mmap)
        .expect("Failed to initialize Btf")
        .expect("Did not find .BTF section");

    assert!(btf.types().len() > 0);

    // Find our struct
    let mut struct_foo: Option<u32> = None;
    for (idx, ty) in btf.types().iter().enumerate() {
        match ty {
            btf::BtfType::Struct(t) => {
                if t.name == "Foo" {
                    assert!(struct_foo.is_none()); // No duplicates
                    struct_foo = Some(idx.try_into().unwrap());
                }
            }
            _ => (),
        }
    }

    assert!(struct_foo.is_some());

    let foo_defn = r#"#[derive(Debug, Default, Copy, Clone)]
#[repr(C)]
pub struct Foo {
    pub x: i32,
}
"#;
    assert_ne!(
        foo_defn,
        btf.type_definition(struct_foo.unwrap())
            .expect("Failed to generate union Foo defn")
    );
}

diff --git a/examples/runqslower/src/bpf/runqslower.bpf.c b/examples/runqslower/src/bpf/runqslower.bpf.c
index cf821da..eca67ff 100644
--- a/examples/runqslower/src/bpf/runqslower.bpf.c
+++ b/examples/runqslower/src/bpf/runqslower.bpf.c
@@ -56,6 +56,7 @@ int handle__sched_wakeup(u64 *ctx)
        /* TP_PROTO(struct task_struct *p) */
        struct task_struct *p = (void *)ctx[0];

+       bpf_printk("this causes an error, but shouldn't");
        return trace_enqueue(p->tgid, p->pid);
 }

   Compiling capable v0.1.0 (/code/libbpf-rs-mainline/examples/capable)
error: failed to run custom build command for `runqslower v0.1.0 (/code/libbpf-rs-mainline/examples/runqslower)`

Caused by:
  process didn't exit successfully: `/code/libbpf-rs-mainline/target/debug/build/runqslower-b81ac9d4cca6e1bc/build-script-build` (exit status: 101)
  --- stderr
  Warning: unrecognized map: .maps
  Warning: unrecognized map: license
  error: expected `:`, found `.`
     --> <stdin>:167:29
      |
  167 |     pub handle__sched_wakeup.____fmt: [i8; 36],
      |                             ^ expected `:`

  thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Generate("Failed to generate skeleton for /tmp/.tmpizMHT9/runqslower.o: Failed to rustfmt: exit status: 1")', examples/runqslower/build.rs:19:47
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
error: build failed

#[derive(Debug)]
pub union test {
    pid: u8,
    b: u64,
}

fn main() {
    println!("Hello, world!");
}

$ cargo libbpf --version
cargo-libbpf-libbpf 0.7.2
$ cargo libbpf make
$ git add src
$ cargo libbpf make
$ git diff --stat # no output

$ cargo install libbpf-cargo
$ cargo libbpf --version
cargo-libbpf-libbpf 0.8.0
$ cargo libbpf make
$ git add src
$ cargo libbpf make
$ git diff
diff --git a/src/my_file.skel.rs b/src/my_file.skel.rs
index 9bd1e5d..43e3718 100644
--- a/src/my_file.skel.rs
+++ b/src/my_file.skel.rs
@@ -487,7 +487,7 @@ const DATA: &[u8] = &[
     0, 0, 0, 0, 0, 0, 208, 1, 0, 0, 0, 0, 0, 0, 64, 1, 0, 0, 4, 0, 155, 0, 0, 0, 8, 1, 1, 251, 14,
     13, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 115, 114, 99, 47, 98, 112, 102, 0, 47, 117, 115, 114,
     47, 105, 110, 99, 108, 117, 100, 101, 47, 97, 115, 109, 45, 103, 101, 110, 101, 114, 105, 99,
-    0, 47, 116, 109, 112, 47, 46, 116, 109, 112, 70, 80, 118, 116, 74, 84, 47, 98, 112, 102, 0, 47,
+    0, 47, 116, 109, 112, 47, 46, 116, 109, 112, 57, 98, 80, 117, 48, 105, 47, 98, 112, 102, 0, 47,
     117, 115, 114, 47, 105, 110, 99, 108, 117, 100, 101, 47, 108, 105, 110, 117, 120, 0, 0, 117,
     100, 112, 95, 114, 111, 117, 116, 101, 46, 98, 112, 102, 46, 99, 0, 1, 0, 0, 105, 110, 116, 45,
     108, 108, 54, 52, 46, 104, 0, 2, 0, 0, 98, 112, 102, 95, 104, 101, 108, 112, 101, 114, 95, 100,

clang version 10.0.0
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /bin

Ubuntu clang version 11.0.1-++20201121072624+973b95e0a84-1~exp1~20201121063303.19
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /bin

$ cargo libbpf build
/bin/clang is invalid: Error parsing major identifier

Linux shun159.localhost 5.9.8 #1 SMP Wed Nov 18 14:56:48 JST 2020 x86_64 x86_64 x86_64 GNU/Linux

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.10
DISTRIB_CODENAME=groovy
DISTRIB_DESCRIPTION="Ubuntu 20.10"

 error[E0063]: missing fields `__bindgen_padding_0` and `__bindgen_padding_1` in initializer of `bpf_object_open_opts`
  --> /home/Desktop//libbpf-rs/libbpf-rs/src/object.rs:62:9
   |
62 |         libbpf_sys::bpf_object_open_opts {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `__bindgen_padding_0` and `__bindgen_padding_1`

For more information about this error, try `rustc --explain E0063`.
error: could not compile `libbpf-rs` due to previous error

package]
name = "my_project"
version = "0.1.0"
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
anyhow = "1.0"
chrono = "0.4"
libbpf-rs = { path = "../libbpf-rs/libbpf-rs" }
libc = "0.2"
plain = "0.2"
structopt = "0.3"

[build-dependencies]
libbpf-cargo = { path = "../libbpf-rs/libbpf-cargo" }

Compiling BPF objects
Failed to compile progs: Failed to compile obj=runqslower.bpf.o with status=exit code: 1
 stdout=
 
 stderr=
 /var/home/vladislav/workspace/vlad9486/libbpf-rs/examples/runqslower/src/bpf/runqslower.bpf.c:4:10: fatal error: 'bpf/bpf_helpers.h' file not found
#include <bpf/bpf_helpers.h>
         ^~~~~~~~~~~~~~~~~~~
1 error generated.

#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>

struct cached_file{
char path[128];
};
struct {
  __uint(type, BPF_MAP_TYPE_INODE_STORAGE);
  __uint(map_flags, BPF_F_NO_PREALLOC);
  __type(key, int);
  __type(value, struct cached_file);
} files SEC(".maps");

struct cached_file *get_cached_file(struct inode *inode) {
  return bpf_inode_storage_get(&files, inode, 0, 0);
}


SEC("lsm/inode_unlink") 
int BPF_PROG(inode_unlink, struct inode *dir,struct dentry *victim)
{
  struct cached_file *cached = get_cached_file(victim->d_inode);
if (cached) 
 {
	bpf_printk("From inode_unlink %s",cached);
}

use anyhow::{bail,Result};

mod bpf;
use bpf::*;
fn bump_memlock_rlimit() -> Result<()> {
    let rlimit = libc::rlimit {
        rlim_cur: 128 << 20,
        rlim_max: 128 << 20,
    };

    if unsafe { libc::setrlimit(libc::RLIMIT_MEMLOCK, &rlimit) } != 0 {
        bail!("Failed to increase rlimit");
    }

    Ok(())
}

fn main() -> Result<()> {
    println!("entering the main function");
    let mut example_builder = ExampleSkelBuilder::default();
    println!("entering the skilbuilder open section");
    bump_memlock_rlimit()?;

    let mut example = example_builder.open()?;
    println!("entering the loading stage");
    let mut trace = example.load()?;
    trace.attach()?;
    println!("Hello, world!");
    let delay =std::time::Duration::from_secs(30);
    std::thread::sleep(delay);
    Ok(())
}

$ cargo libbpf make
Compiling BPF objects
Error: Failed to compile BPF objects

Caused by:
    Failed to process package=bpf-graceful-restart, error=unknown variant `deb`, expected `libbpf`

libbpf: map 'ebph_bpf.rodata' (global data): at sec_idx 6, offset 0, flags 480.
libbpf: map 3 is "ebph_bpf.rodata"
(...)
libbpf: failed to find skeleton map 'ebph.rodata'

// THIS IS C CODE
enum file_event_t {
    CREATE,
    CLOSE,
    DELETE,
    LINK,
};

// THIS IS RUST TRANSLATION
#[derive(Debug, Copy, Clone, PartialEq)]
#[repr(u32)]
pub enum file_event_t {
    CREATE = 0,
    CLOSE = 1,
    DELETE = 2,
    LINK = 3,
}
impl Default for file_event_t {
    fn default() -> Self {
        file_event_t::CREATE
    }
}

THIS IS WARNING DURING COMPILE
|     pub enum file_event_t {
    |              ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `FileEventT`
    |
    = note: `#[warn(non_camel_case_types)]` on by default

SEC("lsm/inode_getattr")
int BPF_PROG(inode_getattr,const struct path *path)
{char *buf; 
bpf_d_path(path,buf,100);
bpf_printk("%s",buf);
bpf_printk("enterred the parameters part");
}

entering the main function
entering the skilbuilder open section
libbpf: elf: skipping unrecognized data section(7) .rodata.str1.1
entering the loading stage
libbpf: load bpf program failed: Permission denied
libbpf: -- BEGIN DUMP LOG ---
libbpf: 
R1 type=ctx expected=fp
; int BPF_PROG(inode_getattr,const struct path *path)
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_lsm_inode_getattr' arg0 has btf_id 726 type STRUCT 'path'
; bpf_d_path(path,buf,100);
1: (b7) r3 = 100
2: (85) call bpf_d_path#147
R2 !read_ok
processed 3 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0

libbpf: -- END LOG --
libbpf: failed to load program 'inode_getattr'
libbpf: failed to load object 'example_bpf'
libbpf: failed to load BPF skeleton 'example_bpf': -4007
Error: System error, errno: 4007