From fcfc9086815bf0d277ad47a90ee3fda4c37acca8 Mon Sep 17 00:00:00 2001 From: Siddhesh Poyarekar Date: Wed, 12 Jan 2022 23:34:48 +0530 Subject: debug: Synchronize feature guards in fortified functions [BZ #28746] Some functions (e.g. stpcpy, pread64, etc.) had moved to POSIX in the main headers as they got incorporated into the standard, but their fortified variants remained under __USE_GNU. As a result, these functions did not get fortified when _GNU_SOURCE was not defined. Add test wrappers that check all functions tested in tst-chk0 at all levels with _GNU_SOURCE undefined and then use the failures to (1) exclude checks for _GNU_SOURCE functions in these tests and (2) Fix feature macro guards in the fortified function headers so that they're the same as the ones in the main headers. This fixes BZ #28746. Signed-off-by: Siddhesh Poyarekar Reviewed-by: Adhemerval Zanella --- debug/Makefile | 10 ++++++++-- debug/tst-fortify.c | 49 +++++++++++++++++++++++++++++++++++++++++-------- 2 files changed, 49 insertions(+), 10 deletions(-) (limited to 'debug') diff --git a/debug/Makefile b/debug/Makefile index 880477632e..96029f32ee 100644 --- a/debug/Makefile +++ b/debug/Makefile @@ -132,6 +132,12 @@ define cflags-lfs CFLAGS-tst-fortify-$(1)-lfs-$(2).$(1) += -D_FILE_OFFSET_BITS=64 endef +define cflags-nongnu +CFLAGS-tst-fortify-$(1)-nongnu-$(2).$(1) += -D_LARGEFILE64_SOURCE=1 +endef + +src-chk-nongnu = \#undef _GNU_SOURCE + # We know these tests have problems with format strings, this is what # we are testing. Disable that warning. They are also testing # deprecated functions (notably gets) so disable that warning as well. @@ -145,13 +151,13 @@ CFLAGS-tst-fortify-$(1)-$(2)-$(3).$(1) += -D_FORTIFY_SOURCE=$(3) -Wno-format \ $(eval $(call cflags-$(2),$(1),$(3))) $(objpfx)tst-fortify-$(1)-$(2)-$(3).$(1): tst-fortify.c Makefile ( echo "/* Autogenerated from Makefile. */"; \ - echo ""; \ + echo "$(src-chk-$(2))"; \ echo "#include \"tst-fortify.c\"" ) > $$@.tmp mv $$@.tmp $$@ endef chk-extensions = c cc -chk-types = default lfs +chk-types = default lfs nongnu chk-levels = 1 2 3 $(foreach e,$(chk-extensions), \ diff --git a/debug/tst-fortify.c b/debug/tst-fortify.c index 9288610fe6..d65a2fe6e1 100644 --- a/debug/tst-fortify.c +++ b/debug/tst-fortify.c @@ -1,4 +1,5 @@ /* Copyright (C) 2004-2022 Free Software Foundation, Inc. + Copyright The GNU Toolchain Authors. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -36,6 +37,17 @@ #include #include +#ifndef _GNU_SOURCE +# define MEMPCPY memcpy +# define WMEMPCPY wmemcpy +# define MEMPCPY_RET(x) 0 +# define WMEMPCPY_RET(x) 0 +#else +# define MEMPCPY mempcpy +# define WMEMPCPY wmempcpy +# define MEMPCPY_RET(x) __builtin_strlen (x) +# define WMEMPCPY_RET(x) wcslen (x) +#endif #define obstack_chunk_alloc malloc #define obstack_chunk_free free @@ -162,7 +174,7 @@ do_test (void) if (memcmp (buf, "aabcdefghi", 10)) FAIL (); - if (mempcpy (buf + 5, "abcde", 5) != buf + 10 + if (MEMPCPY (buf + 5, "abcde", 5) != buf + 5 + MEMPCPY_RET ("abcde") || memcmp (buf, "aabcdabcde", 10)) FAIL (); @@ -207,7 +219,7 @@ do_test (void) if (memcmp (buf, "aabcdefghi", 10)) FAIL (); - if (mempcpy (buf + 5, "abcde", l0 + 5) != buf + 10 + if (MEMPCPY (buf + 5, "abcde", l0 + 5) != buf + 5 + MEMPCPY_RET ("abcde") || memcmp (buf, "aabcdabcde", 10)) FAIL (); @@ -266,7 +278,8 @@ do_test (void) if (memcmp (a.buf1, "aabcdefghi", 10)) FAIL (); - if (mempcpy (a.buf1 + 5, "abcde", l0 + 5) != a.buf1 + 10 + if (MEMPCPY (a.buf1 + 5, "abcde", l0 + 5) + != a.buf1 + 5 + MEMPCPY_RET ("abcde") || memcmp (a.buf1, "aabcdabcde", 10)) FAIL (); @@ -347,6 +360,7 @@ do_test (void) bcopy (buf + 1, buf + 2, l0 + 9); CHK_FAIL_END +#ifdef _GNU_SOURCE CHK_FAIL_START p = (char *) mempcpy (buf + 6, "abcde", 5); CHK_FAIL_END @@ -354,6 +368,7 @@ do_test (void) CHK_FAIL_START p = (char *) mempcpy (buf + 6, "abcde", l0 + 5); CHK_FAIL_END +#endif CHK_FAIL_START memset (buf + 9, 'j', 2); @@ -464,6 +479,7 @@ do_test (void) bcopy (a.buf1 + 1, a.buf1 + 2, l0 + 9); CHK_FAIL_END +#ifdef _GNU_SOURCE CHK_FAIL_START p = (char *) mempcpy (a.buf1 + 6, "abcde", 5); CHK_FAIL_END @@ -471,6 +487,7 @@ do_test (void) CHK_FAIL_START p = (char *) mempcpy (a.buf1 + 6, "abcde", l0 + 5); CHK_FAIL_END +#endif CHK_FAIL_START memset (a.buf1 + 9, 'j', 2); @@ -550,7 +567,7 @@ do_test (void) if (wmemcmp (wbuf, L"aabcdefghi", 10)) FAIL (); - if (wmempcpy (wbuf + 5, L"abcde", 5) != wbuf + 10 + if (WMEMPCPY (wbuf + 5, L"abcde", 5) != wbuf + 5 + WMEMPCPY_RET (L"abcde") || wmemcmp (wbuf, L"aabcdabcde", 10)) FAIL (); @@ -583,7 +600,8 @@ do_test (void) if (wmemcmp (wbuf, L"aabcdefghi", 10)) FAIL (); - if (wmempcpy (wbuf + 5, L"abcde", l0 + 5) != wbuf + 10 + if (WMEMPCPY (wbuf + 5, L"abcde", l0 + 5) + != wbuf + 5 + WMEMPCPY_RET (L"abcde") || wmemcmp (wbuf, L"aabcdabcde", 10)) FAIL (); @@ -625,7 +643,8 @@ do_test (void) if (wmemcmp (wa.buf1, L"aabcdefghi", 10)) FAIL (); - if (wmempcpy (wa.buf1 + 5, L"abcde", l0 + 5) != wa.buf1 + 10 + if (WMEMPCPY (wa.buf1 + 5, L"abcde", l0 + 5) + != wa.buf1 + 5 + WMEMPCPY_RET (L"abcde") || wmemcmp (wa.buf1, L"aabcdabcde", 10)) FAIL (); @@ -694,6 +713,7 @@ do_test (void) wmemmove (wbuf + 2, wbuf + 1, l0 + 9); CHK_FAIL_END +#ifdef _GNU_SOURCE CHK_FAIL_START wp = wmempcpy (wbuf + 6, L"abcde", 5); CHK_FAIL_END @@ -701,6 +721,7 @@ do_test (void) CHK_FAIL_START wp = wmempcpy (wbuf + 6, L"abcde", l0 + 5); CHK_FAIL_END +#endif CHK_FAIL_START wmemset (wbuf + 9, L'j', 2); @@ -768,6 +789,7 @@ do_test (void) wmemmove (wa.buf1 + 2, wa.buf1 + 1, l0 + 9); CHK_FAIL_END +#ifdef _GNU_SOURCE CHK_FAIL_START wp = wmempcpy (wa.buf1 + 6, L"abcde", 5); CHK_FAIL_END @@ -775,6 +797,7 @@ do_test (void) CHK_FAIL_START wp = wmempcpy (wa.buf1 + 6, L"abcde", l0 + 5); CHK_FAIL_END +#endif CHK_FAIL_START wmemset (wa.buf1 + 9, L'j', 2); @@ -906,6 +929,7 @@ do_test (void) if (fprintf (fp, buf2 + 4, str5) != 7) FAIL (); +#ifdef _GNU_SOURCE char *my_ptr = NULL; strcpy (buf2 + 2, "%n%s%n"); /* When the format string is writable and contains %n, @@ -935,6 +959,7 @@ do_test (void) if (obstack_printf (&obs, "%s%n%s%n", str4, &n1, str5, &n1) != 14) FAIL (); obstack_free (&obs, NULL); +#endif if (freopen (temp_filename, "r", stdin) == NULL) { @@ -982,6 +1007,7 @@ do_test (void) rewind (stdin); +#ifdef _GNU_SOURCE if (fgets_unlocked (buf, buf_size, stdin) != buf || memcmp (buf, "abcdefgh\n", 10)) FAIL (); @@ -1008,6 +1034,7 @@ do_test (void) #endif rewind (stdin); +#endif if (fread (buf, 1, buf_size, stdin) != buf_size || memcmp (buf, "abcdefgh\nA", 10)) @@ -1578,7 +1605,10 @@ do_test (void) ret = 1; } - int fd = posix_openpt (O_RDWR); + int fd; + +#ifdef _GNU_SOURCE + fd = posix_openpt (O_RDWR); if (fd != -1) { char enough[1000]; @@ -1594,6 +1624,7 @@ do_test (void) #endif close (fd); } +#endif #if PATH_MAX > 0 confstr (_CS_GNU_LIBC_VERSION, largebuf, sizeof (largebuf)); @@ -1711,8 +1742,9 @@ do_test (void) poll (fds, l0 + 2, 0); CHK_FAIL_END #endif +#ifdef _GNU_SOURCE ppoll (fds, 1, NULL, NULL); -#if __USE_FORTIFY_LEVEL >= 1 +# if __USE_FORTIFY_LEVEL >= 1 CHK_FAIL_START ppoll (fds, 2, NULL, NULL); CHK_FAIL_END @@ -1720,6 +1752,7 @@ do_test (void) CHK_FAIL_START ppoll (fds, l0 + 2, NULL, NULL); CHK_FAIL_END +# endif #endif return ret; -- cgit 1.4.1