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authorFrédéric Bérat <fberat@redhat.com>2023-03-17 10:17:28 +0100
committerFrédéric Bérat <fberat@redhat.com>2023-07-05 16:59:48 +0200
commit20c894d21eb64153abf7c7f96e6a151897cf1488 (patch)
tree41038a7e2daf61f19d10f4804313e8e33430046b /posix
parent64d9580cdf7e417170abbef0327e04b29712e949 (diff)
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Exclude routines from fortification
Since the _FORTIFY_SOURCE feature uses some routines of Glibc, they need to
be excluded from the fortification.

On top of that:
 - some tests explicitly verify that some level of fortification works
   appropriately, we therefore shouldn't modify the level set for them.
 - some objects need to be build with optimization disabled, which
   prevents _FORTIFY_SOURCE to be used for them.

Assembler files that implement architecture specific versions of the
fortified routines were not excluded from _FORTIFY_SOURCE as there is no
C header included that would impact their behavior.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Diffstat (limited to 'posix')
-rw-r--r--posix/Makefile11
1 files changed, 11 insertions, 0 deletions
diff --git a/posix/Makefile b/posix/Makefile
index ad43cbdec6..5113ee3b74 100644
--- a/posix/Makefile
+++ b/posix/Makefile
@@ -183,6 +183,14 @@ routines := \
   wordexp \
   # routines
 
+# Exclude fortified routines from being built with _FORTIFY_SOURCE
+routines_no_fortify += \
+  confstr \
+  getgroups \
+  pread \
+  pread64 \
+  # routines_no_fortify
+
 aux := \
   environ \
   init-posix \
@@ -604,6 +612,9 @@ bug-glob1-ARGS = "$(objpfx)"
 tst-execvp3-ARGS = --test-dir=$(objpfx)
 CFLAGS-tst-spawn3.c += -DOBJPFX=\"$(objpfx)\"
 
+# Test voluntarily overflows struct dirent
+CFLAGS-bug-glob2.c += $(no-fortify-source)
+
 $(objpfx)testcases.h: TESTS TESTS2C.sed
 	LC_ALL=C sed -f TESTS2C.sed < $< > $@T
 	mv $@T $@