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Ivan Khoronzhuk 3e2bab6d2c libbpf: use LFS (_FILE_OFFSET_BITS) instead of direct mmap2 syscall 
Drop __NR_mmap2 fork in flavor of LFS, that is _FILE_OFFSET_BITS=64
(glibc & bionic) / LARGEFILE64_SOURCE (for musl) decision. It allows
mmap() to use 64bit offset that is passed to mmap2 syscall. As result
pgoff is not truncated and no need to use direct access to mmap2 for
32 bits systems.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
 2019-08-27 13:58:15 -07:00
Ivan Khoronzhuk f925686015 libbpf: fix max() type mismatch for 32bit 
It fixes build error for 32bit caused by type mismatch
size_t/unsigned long.

Fixes: bf82927125dd ("libbpf: refactor map initialization")
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
 2019-07-08 12:52:46 -07:00