openharmony/third_party_libbpf
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Andrii Nakryiko bada95a5f3 libbpf: Make btf__resolve_size logic always check size error condition 
Perform size check always in btf__resolve_size. Makes the logic a bit more
robust against corrupted BTF and silences LGTM/Coverity complaining about
always true (size < 0) check.

Fixes: 69eaab04c675 ("btf: extract BTF type size calculation")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20191107020855.3834758-5-andriin@fb.com
2019-11-13 16:39:58 -08:00
include bpf: Add probe_read_{user, kernel} and probe_read_{user, kernel}_str helpers 2019-11-05 16:00:11 -08:00
scripts coverity: explicitly use bash instead of sh 2019-11-05 13:28:13 -08:00
src libbpf: Make btf__resolve_size logic always check size error condition 2019-11-13 16:39:58 -08:00
travis-ci/managers travis: add an aarch64 Xenial job 2019-10-23 10:13:54 -07:00
.lgtm.yml lgtm: fix the extraction process 2019-10-28 15:15:47 -07:00
.travis.yml travis: use sudo during the 'install' phase 2019-11-04 15:08:38 -08:00
BPF-CHECKPOINT-COMMIT sync: latest libbpf changes from kernel 2019-11-05 16:00:11 -08:00
CHECKPOINT-COMMIT sync: latest libbpf changes from kernel 2019-11-06 14:11:45 -08:00
README.md README: add Coverity badge 2019-11-01 23:22:57 -07:00

README.md

This is a mirror of bpf-next linux tree's tools/lib/bpf directory plus its supporting header files.

The following files will by sync'ed with bpf-next repo:

  • src/ <-> bpf-next/tools/lib/bpf/
  • include/uapi/linux/bpf_common.h <-> bpf-next/tools/include/uapi/linux/bpf_common.h
  • include/uapi/linux/bpf.h <-> bpf-next/tools/include/uapi/linux/bpf.h
  • include/uapi/linux/btf.h <-> bpf-next/tools/include/uapi/linux/btf.h
  • include/uapi/linux/if_link.h <-> bpf-next/tools/include/uapi/linux/if_link.h
  • include/uapi/linux/if_xdp.h <-> bpf-next/tools/include/uapi/linux/if_xdp.h
  • include/uapi/linux/netlink.h <-> bpf-next/tools/include/uapi/linux/netlink.h
  • include/tools/libc_compat.h <-> bpf-next/tools/include/tools/libc_compat.h

Other header files at this repo (include/linux/*.h) are reduced versions of their counterpart files at bpf-next's tools/include/linux/*.h to make compilation successful.

Build Build Status Total alerts Coverity

libelf is an internal dependency of libbpf and thus it is required to link against and must be installed on the system for applications to work. pkg-config is used by default to find libelf, and the program called can be overridden with PKG_CONFIG. If using pkg-config at build time is not desired, it can be disabled by setting NO_PKG_CONFIG=1 when calling make.

To build both static libbpf.a and shared libbpf.so:

$ cd src
$ make

To build only static libbpf.a library in directory build/ and install them together with libbpf headers in a staging directory root/:

$ cd src
$ mkdir build root
$ BUILD_STATIC_ONLY=y OBJDIR=build DESTDIR=root make install

To build both static libbpf.a and shared libbpf.so against a custom libelf dependency installed in /build/root/ and install them together with libbpf headers in a build directory /build/root/:

$ cd src
$ PKG_CONFIG_PATH=/build/root/lib64/pkgconfig DESTDIR=/build/root make install