freebsd-dev/lib/libc/string/Makefile.inc
Alex Richardson 8185be3307 libc: Disable ASAN for certain string functions
They deliberately read out-of-bounds values to avoid byte-by-byte
loads and check multiple bytes at once. While this will work on x86,
it is flagged as an out-of-bounds read with ASAN, so we have to
disable instrumentation here. This also causes bounds errors for CHERI,
so in CheriBSD we use implementations that avoid OOB reads.

Differential Revision: https://reviews.freebsd.org/D31045
2021-08-02 14:33:24 +01:00

116 lines
3.5 KiB
Makefile

# @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
# $FreeBSD$
.PATH: ${LIBC_SRCTOP}/${LIBC_ARCH}/string ${LIBC_SRCTOP}/string
.PATH: ${SRCTOP}/sys/libkern
CFLAGS+= -I${LIBC_SRCTOP}/locale
# machine-independent string sources
MISRCS+=bcmp.c bcopy.c bzero.c explicit_bzero.c \
ffs.c ffsl.c ffsll.c fls.c flsl.c flsll.c \
memccpy.c memchr.c memrchr.c memcmp.c \
memcpy.c memmem.c memmove.c mempcpy.c memset.c memset_s.c \
stpcpy.c stpncpy.c strcasecmp.c \
strcat.c strcasestr.c strchr.c strchrnul.c strcmp.c strcoll.c strcpy.c\
strcspn.c strdup.c strerror.c strlcat.c strlcpy.c strlen.c strmode.c \
strncat.c strncmp.c strncpy.c strndup.c strnlen.c strnstr.c \
strpbrk.c strrchr.c strsep.c strsignal.c strspn.c strstr.c strtok.c \
strxfrm.c swab.c \
timingsafe_bcmp.c \
timingsafe_memcmp.c \
wcpcpy.c wcpncpy.c wcscasecmp.c wcscat.c \
wcschr.c wcscmp.c wcscoll.c wcscpy.c wcscspn.c wcsdup.c \
wcslcat.c wcslcpy.c wcslen.c wcsncasecmp.c wcsncat.c wcsncmp.c \
wcsncpy.c wcsnlen.c wcspbrk.c \
wcsrchr.c wcsspn.c wcsstr.c wcstok.c wcswidth.c wcsxfrm.c wmemchr.c \
wmemcmp.c \
wmemcpy.c wmemmove.c wmempcpy.c wmemset.c
SYM_MAPS+= ${LIBC_SRCTOP}/string/Symbol.map
.if ${MK_ASAN} != "no"
# These source files deliberately read out of bounds since they assume that
# out-of-bounds memory accesses that don't cross pages are always legal.
# Note: While this is fine on x86, it does break when running with CHERI.
CFLAGS.strlen.c+= -fno-sanitize=address
CFLAGS.strchrnul.c+= -fno-sanitize=address
CFLAGS.memchr.c+= -fno-sanitize=address
.endif
# machine-dependent string sources
.sinclude "${LIBC_SRCTOP}/${LIBC_ARCH}/string/Makefile.inc"
MAN+= bcmp.3 bcopy.3 bstring.3 bzero.3 ffs.3 index.3 memccpy.3 memchr.3 \
memcmp.3 memcpy.3 memmem.3 memmove.3 memset.3 strcasecmp.3 strcat.3 \
strchr.3 strcmp.3 strcoll.3 strcpy.3 strdup.3 strerror.3 \
string.3 strlcpy.3 strlen.3 strmode.3 strpbrk.3 strsep.3 \
strspn.3 strstr.3 strtok.3 strxfrm.3 swab.3 \
timingsafe_bcmp.3 \
wcscoll.3 wcstok.3 \
wcswidth.3 wcsxfrm.3 wmemchr.3
MLINKS+=bzero.3 explicit_bzero.3
MLINKS+=ffs.3 ffsl.3 \
ffs.3 ffsll.3 \
ffs.3 fls.3 \
ffs.3 flsl.3 \
ffs.3 flsll.3
MLINKS+=index.3 rindex.3
MLINKS+=memchr.3 memrchr.3
MLINKS+=memcpy.3 mempcpy.3
MLINKS+=memset.3 memset_s.3
MLINKS+=strcasecmp.3 strncasecmp.3 \
strcasecmp.3 strcasecmp_l.3 \
strcasecmp.3 strncasecmp_l.3
MLINKS+=strcat.3 strncat.3
MLINKS+=strchr.3 strrchr.3 \
strchr.3 strchrnul.3
MLINKS+=strcmp.3 strncmp.3
MLINKS+=strcoll.3 strcoll_l.3
MLINKS+=strcpy.3 stpcpy.3 \
strcpy.3 stpncpy.3 \
strcpy.3 strncpy.3
MLINKS+=strdup.3 strndup.3
MLINKS+=strerror.3 perror.3 \
strerror.3 strerror_l.3 \
strerror.3 strerror_r.3 \
strerror.3 sys_errlist.3 \
strerror.3 sys_nerr.3
MLINKS+=strlcpy.3 strlcat.3
MLINKS+=strlen.3 strnlen.3
MLINKS+=strspn.3 strcspn.3
MLINKS+=strstr.3 strcasestr.3 \
strstr.3 strnstr.3 \
strstr.3 strcasestr_l.3
MLINKS+=strtok.3 strtok_r.3
MLINKS+=strxfrm.3 strxfrm_l.3
MLINKS+=timingsafe_bcmp.3 timingsafe_memcmp.3
MLINKS+=wmemchr.3 wcpcpy.3 \
wmemchr.3 wcpncpy.3 \
wmemchr.3 wcscasecmp.3 \
wmemchr.3 wcscat.3 \
wmemchr.3 wcschr.3 \
wmemchr.3 wcscmp.3 \
wmemchr.3 wcscpy.3 \
wmemchr.3 wcscspn.3 \
wmemchr.3 wcsdup.3 \
wmemchr.3 wcslcat.3 \
wmemchr.3 wcslcpy.3 \
wmemchr.3 wcslen.3 \
wmemchr.3 wcsncasecmp.3 \
wmemchr.3 wcsncat.3 \
wmemchr.3 wcsncmp.3 \
wmemchr.3 wcsncpy.3 \
wmemchr.3 wcsnlen.3 \
wmemchr.3 wcspbrk.3 \
wmemchr.3 wcsrchr.3 \
wmemchr.3 wcsspn.3 \
wmemchr.3 wcsstr.3 \
wmemchr.3 wmemcmp.3 \
wmemchr.3 wmemcpy.3 \
wmemchr.3 wmemmove.3 \
wmemchr.3 wmempcpy.3 \
wmemchr.3 wmemset.3