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659fe9fdd1
glibc/stdio-common/Makefile
Florian Weimer 659fe9fdd1 stdio-common: Introduce buffers for implementing printf 
These buffers will eventually be used instead of FILE * objects
to implement printf functions.  The multibyte buffer is struct
__printf_buffer, the wide buffer is struct __wprintf_buffer.

To enable writing type-generic code, the header files
printf_buffer-char.h and printf_buffer-wchar_t.h define the
Xprintf macro differently, enabling Xprintf (buffer) to stand
for __printf_buffer and __wprintf_buffer as appropriate.  For
common cases, macros like Xprintf_buffer are provided as a more
syntactically convenient shortcut.

Buffer-specific flush callbacks are implemented with a switch
statement instead of a function pointer, to avoid hardening issues
similar to those of libio vtables.  struct __printf_buffer_as_file
is needed to support custom printf specifiers because the public
interface for that requires passing a FILE *, which is why there
is a trapdoor back from these buffers to FILE * streams.

Since the immediate user of these interfaces knows when processing
has finished, there is no flush callback for the end of processing,
only a flush callback for the intermediate buffer flush.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-12-19 18:56:54 +01:00

445 lines
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Makefile
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# Copyright (C) 1991-2022 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
#
# Specific makefile for stdio-common.
#
subdir := stdio-common
include ../Makeconfig
headers := stdio_ext.h printf.h bits/printf-ldbl.h bits/stdio_lim.h
routines := \
_itoa \
_itowa \
asprintf \
ctermid \
cuserid \
dprintf \
flockfile \
fprintf \
fscanf \
ftrylockfile \
funlockfile \
gentempfd \
getline \
getw \
grouping_iterator \
iovfscanf \
isoc99_fscanf \
isoc99_scanf \
isoc99_sscanf \
isoc99_vfscanf \
isoc99_vscanf \
isoc99_vsscanf \
itoa-digits \
itoa-udigits \
itowa-digits \
perror \
printf \
printf-prs \
printf_buffer_as_file \
printf_buffer_done \
printf_buffer_flush \
printf_buffer_pad_1 \
printf_buffer_putc_1 \
printf_buffer_puts_1 \
printf_buffer_to_file \
printf_buffer_write \
printf_fp \
printf_fphex \
printf_size \
psiginfo \
psignal \
putw \
reg-modifier \
reg-printf \
reg-type \
remove \
rename \
renameat \
renameat2 \
scanf \
snprintf \
sprintf \
sscanf \
tempnam \
tempname \
tmpfile \
tmpfile64 \
tmpnam \
tmpnam_r \
vfprintf \
vfprintf-internal \
vfscanf \
vfscanf-internal \
vfwprintf \
vfwprintf-internal \
vfwscanf \
vfwscanf-internal \
vprintf \
wprintf_buffer_as_file \
wprintf_buffer_done \
wprintf_buffer_flush \
wprintf_buffer_pad_1 \
wprintf_buffer_putc_1 \
wprintf_buffer_puts_1 \
wprintf_buffer_to_file \
wprintf_buffer_write \
# routines
aux := \
errlist \
errlist-data \
errname \
fxprintf \
printf-parsemb \
printf-parsewc \
siglist \
# aux
tests := \
bug-vfprintf-nargs \
bug1 \
bug10 \
bug11 \
bug12 \
bug13 \
bug14 \
bug16 \
bug17 \
bug18 \
bug18a \
bug19 \
bug19a \
bug2 \
bug20 \
bug21 \
bug22 \
bug23 \
bug23-2 \
bug23-3 \
bug23-4 \
bug24 \
bug25 \
bug26 \
bug3 \
bug4 \
bug5 \
bug6 \
bug7 \
bug8 \
bug9 \
errnobug \
scanf1 \
scanf10 \
scanf11 \
scanf12 \
scanf13 \
scanf14 \
scanf14a \
scanf15 \
scanf16 \
scanf16a \
scanf17 \
scanf2 \
scanf3 \
scanf4 \
scanf5 \
scanf7 \
scanf8 \
scanf9 \
temptest \
test-fseek \
test-fwrite \
test-popen \
test-strerr \
test-vfprintf \
test_rdwr \
tfformat \
tiformat \
tllformat \
tst-bz11319 \
tst-bz11319-fortify2 \
tst-cookie \
tst-fdopen \
tst-ferror \
tst-fgets \
tst-fileno \
tst-fmemopen \
tst-fmemopen2 \
tst-fmemopen3 \
tst-fmemopen4 \
tst-fphex \
tst-fphex-wide \
tst-fseek \
tst-fwrite \
tst-gets \
tst-grouping \
tst-grouping2 \
tst-long-dbl-fphex \
tst-memstream-string \
tst-obprintf \
tst-perror \
tst-popen \
tst-popen2 \
tst-printf-binary \
tst-printf-bz18872 \
tst-printf-bz25691 \
tst-printf-fp-free \
tst-printf-fp-leak \
tst-printf-round \
tst-printfsz \
tst-put-error \
tst-renameat2 \
tst-rndseek \
tst-scanf-round \
tst-setvbuf1 \
tst-sprintf \
tst-sprintf-errno \
tst-sprintf2 \
tst-sprintf3 \
tst-sscanf \
tst-swprintf \
tst-swscanf \
tst-tmpnam \
tst-ungetc \
tst-unlockedio \
tst-vfprintf-mbs-prec \
tst-vfprintf-user-type \
tst-vfprintf-width-prec \
tst-vfprintf-width-prec-alloc \
tst-vfprintf-width-i18n \
tst-wc-printf \
tstdiomisc \
tstgetln \
tstscanf \
xbug \
# tests
generated += \
errlist-data-aux-shared.S \
errlist-data-aux.S \
siglist-aux-shared.S \
siglist-aux.S \
# generated
tests-internal = \
tst-grouping_iterator \
# tests-internal
test-srcs = tst-unbputc tst-printf tst-printfsz-islongdouble
ifeq ($(run-built-tests),yes)
tests-special += \
$(objpfx)tst-printf-bz18872-mem.out \
$(objpfx)tst-printf-bz25691-mem.out \
$(objpfx)tst-printf-fp-free-mem.out \
$(objpfx)tst-printf-fp-leak-mem.out \
$(objpfx)tst-printf.out \
$(objpfx)tst-printfsz-islongdouble.out \
$(objpfx)tst-setvbuf1-cmp.out \
$(objpfx)tst-unbputc.out \
$(objpfx)tst-vfprintf-width-prec-mem.out \
# tests-special
generated += \
tst-printf-bz18872-mem.out \
tst-printf-bz18872.c \
tst-printf-bz18872.mtrace \
tst-printf-bz25691-mem.out \
tst-printf-bz25691.mtrace \
tst-printf-fp-free-mem.out \
tst-printf-fp-free.mtrace \
tst-printf-fp-leak-mem.out \
tst-printf-fp-leak.mtrace \
tst-vfprintf-width-prec-mem.out \
tst-vfprintf-width-prec.mtrace \
# generated
endif # $(run-built-tests)
tests-special += $(objpfx)tst-errno-manual.out
include ../Rules
# The errlist.c is built in two phases because compiler might reorder the
# compat_symbol directive prior the object itself and on binutils older
# than 2.29 it might generate object sizes different than the expected ones.
$(objpfx)errlist-data-aux-shared.S: errlist-data-gen.c
$(make-target-directory)
$(compile-command.c) $(pic-cppflags) $(pic-ccflag) $(no-stack-protector) -S
$(objpfx)errlist-data-aux.S: errlist-data-gen.c
$(make-target-directory)
$(compile-command.c) $(pie-default) $(no-stack-protector) -S
ifndef no_deps
-include $(objpfx)errlist-data-aux.S.d $(objpfx)errlist-data-aux-shared.S.d
endif
$(objpfx)errlist-data.os: $(objpfx)errlist-data-aux-shared.S
$(addprefix $(objpfx)errlist-data, $(object-suffixes-noshared)): \
$(objpfx)errlist-data-aux.S
$(objpfx)siglist-aux-shared.S: siglist-gen.c
$(make-target-directory)
$(compile-command.c) $(pic-cppflags) $(pic-ccflag) $(no-stack-protector) -S
$(objpfx)siglist-aux.S: siglist-gen.c
$(make-target-directory)
$(compile-command.c) $(pie-default) $(no-stack-protector) -S
ifndef no_deps
-include $(objpfx)siglist-aux.S.d $(objpfx)siglist-aux-shared.S.d
endif
$(objpfx)siglist.os: $(objpfx)siglist-aux-shared.S
$(addprefix $(objpfx)siglist, $(object-suffixes-noshared)): \
$(objpfx)siglist-aux.S
ifeq ($(run-built-tests),yes)
LOCALES := \
de_DE.ISO-8859-1 \
de_DE.UTF-8 \
en_US.ISO-8859-1 \
hi_IN.UTF-8 \
ja_JP.EUC-JP \
ps_AF.UTF-8 \
tg_TJ.UTF-8 \
# LOCALES
include ../gen-locales.mk
$(objpfx)bug14.out: $(gen-locales)
$(objpfx)scanf13.out: $(gen-locales)
$(objpfx)test-vfprintf.out: $(gen-locales)
$(objpfx)tst-grouping.out: $(gen-locales)
$(objpfx)tst-grouping2.out: $(gen-locales)
$(objpfx)tst-grouping_iterator.out: $(gen-locales)
$(objpfx)tst-sprintf.out: $(gen-locales)
$(objpfx)tst-sscanf.out: $(gen-locales)
$(objpfx)tst-swprintf.out: $(gen-locales)
$(objpfx)tst-vfprintf-mbs-prec.out: $(gen-locales)
$(objpfx)tst-vfprintf-width-i18n.out: $(gen-locales)
endif
tst-printf-bz18872-ENV = MALLOC_TRACE=$(objpfx)tst-printf-bz18872.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
tst-vfprintf-width-prec-ENV = \
MALLOC_TRACE=$(objpfx)tst-vfprintf-width-prec.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
tst-printf-bz25691-ENV = \
MALLOC_TRACE=$(objpfx)tst-printf-bz25691.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
tst-printf-fp-free-ENV = \
MALLOC_TRACE=$(objpfx)tst-printf-fp-free.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
tst-printf-fp-leak-ENV = \
MALLOC_TRACE=$(objpfx)tst-printf-fp-leak.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
$(objpfx)tst-unbputc.out: tst-unbputc.sh $(objpfx)tst-unbputc
$(SHELL) $< $(common-objpfx) '$(test-program-prefix)'; \
$(evaluate-test)
$(objpfx)tst-printf.out: tst-printf.sh $(objpfx)tst-printf
$(SHELL) $< $(common-objpfx) '$(test-program-prefix)'; \
$(evaluate-test)
$(objpfx)tst-printfsz-islongdouble.out: \
tst-printfsz-islongdouble.sh $(objpfx)tst-printfsz-islongdouble
$(SHELL) $^ '$(test-program-prefix)' $@; \
$(evaluate-test)
# We generate this source because it requires a printf invocation with
# 10K arguments.
$(objpfx)tst-printf-bz18872.c: tst-printf-bz18872.sh
rm -f $@ && $(BASH) $^ > $@.new && mv $@.new $@
$(objpfx)tst-%-mem.out: $(objpfx)tst-%.out
$(common-objpfx)malloc/mtrace $(objpfx)tst-$*.mtrace > $@; \
$(evaluate-test)
errlist-h = $(firstword $(wildcard $(addsuffix /errlist.h,$(sysdirs) .)))
$(objpfx)tst-errno-manual.out: tst-errno-manual.py \
$(errlist-h) \
$(..)manual/errno.texi
$(PYTHON) tst-errno-manual.py -m $(..)manual/errno.texi \
-e $(errlist-h) > $@; \
$(evaluate-test)
CFLAGS-vfprintf.c += -Wno-uninitialized
CFLAGS-vfwprintf.c += -Wno-uninitialized
CFLAGS-tmpfile.c += -fexceptions
CFLAGS-tmpfile64.c += -fexceptions
CFLAGS-tempname.c += -fexceptions
CFLAGS-psignal.c += -fexceptions
CFLAGS-vprintf.c += -fexceptions
CFLAGS-cuserid.c += -fexceptions
CFLAGS-vfprintf.c += -fexceptions
CFLAGS-fprintf.c += -fexceptions
CFLAGS-printf.c += -fexceptions
CFLAGS-vfwprintf.c += -fexceptions
CFLAGS-vfscanf.c += -fexceptions
CFLAGS-vfwscanf.c += -fexceptions
CFLAGS-fscanf.c += -fexceptions
CFLAGS-scanf.c += -fexceptions
CFLAGS-isoc99_vfscanf.c += -fexceptions
CFLAGS-isoc99_vscanf.c += -fexceptions
CFLAGS-isoc99_fscanf.c += -fexceptions
CFLAGS-isoc99_scanf.c += -fexceptions
CFLAGS-dprintf.c += $(config-cflags-wno-ignored-attributes)
# scanf14a.c and scanf16a.c test a deprecated extension which is no
# longer visible under most conformance levels; see the source files
# for more detail.
CFLAGS-scanf14a.c += -std=gnu89
CFLAGS-scanf16a.c += -std=gnu89
CFLAGS-bug3.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-bug4.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-bug5.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-test-fseek.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-test-popen.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-test_rdwr.c += -DOBJPFX=\"$(objpfx)\"
# tst-gets.c tests a deprecated function.
CFLAGS-tst-gets.c += -Wno-deprecated-declarations
# BZ #11319 was first fixed for regular vdprintf, then reopened because
# the fortified version had the same bug.
CFLAGS-tst-bz11319-fortify2.c += -D_FORTIFY_SOURCE=2
CFLAGS-tst-memstream-string.c += -fno-builtin-fprintf
CPPFLAGS += $(libio-mtsafe)
$(objpfx)tst-setvbuf1.out: /dev/null $(objpfx)tst-setvbuf1
$(test-program-cmd) > $@ 2>&1; \
$(evaluate-test)
$(objpfx)tst-setvbuf1-cmp.out: tst-setvbuf1.expect $(objpfx)tst-setvbuf1.out
cmp $^ > $@; \
$(evaluate-test)
$(objpfx)tst-printf-round: $(libm)
$(objpfx)tst-scanf-round: $(libm)
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