diff options
| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2018-07-10 14:43:05 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-07-11 22:13:34 +0200 |
| commit | 531b014e7a2fedaeff0b19b2934d830cd4b35dc0 (patch) | |
| tree | 0de8355e9d533b4f6f90c3b389f58c992e75bb14 /tools/lib/bpf/Makefile | |
| parent | 8d13406c02f9c38f106416e1dbe0e68059b9f59a (diff) | |
tools: bpf: make use of reallocarray
reallocarray() is a safer variant of realloc which checks for
multiplication overflow in case of array allocation. Since it's
not available in Glibc < 2.26 import kernel's overflow.h and
add a static inline implementation when needed. Use feature
detection to probe for existence of reallocarray.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/lib/bpf/Makefile')
| -rw-r--r-- | tools/lib/bpf/Makefile | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile index 5390e7725e43..7a8e4c98ef1a 100644 --- a/tools/lib/bpf/Makefile +++ b/tools/lib/bpf/Makefile @@ -66,7 +66,7 @@ ifndef VERBOSE endif FEATURE_USER = .libbpf -FEATURE_TESTS = libelf libelf-getphdrnum libelf-mmap bpf +FEATURE_TESTS = libelf libelf-getphdrnum libelf-mmap bpf reallocarray FEATURE_DISPLAY = libelf bpf INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi -I$(srctree)/tools/perf @@ -120,6 +120,10 @@ ifeq ($(feature-libelf-getphdrnum), 1) override CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT endif +ifeq ($(feature-reallocarray), 0) + override CFLAGS += -DCOMPAT_NEED_REALLOCARRAY +endif + # Append required CFLAGS override CFLAGS += $(EXTRA_WARNINGS) override CFLAGS += -Werror -Wall |