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[PATCH] Implement strlcpy [BZ #178]
- From: Florian Weimer <fweimer at redhat dot com>
- To: "libc-al >> GNU C Library" <libc-alpha at sourceware dot org>
- Date: Mon, 15 Sep 2014 15:47:22 +0200
- Subject: [PATCH] Implement strlcpy [BZ #178]
- Authentication-results: sourceware.org; auth=none
This patch adds an implementation of strlcpy.
I think it shows that we can do much better than custom implementations
in libbsd and random applications:
* This version is based on optimized strnlen and memcpy implementation.
* It has fortify support.
* In fortify mode, there a link-time warnings for common misuses.
(The location of the warning could be improved,
but this is a GCC issue.)
If this is patch is accepted, I will work on an implementation of
strlcat along similar lines.
--
Florian Weimer / Red Hat Product Security
>From 4d3e24a591e818c4e01d02a3b98f64df9c120c0a Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 15 Sep 2014 15:45:56 +0200
Subject: [PATCH] Implement strlcpy [BZ #178]
This change may cause application code not to compile anymore, but
strlcpy is in the implementaton namespace (per C11 7.31.13), so this
is an application issue.
2014-09-15 Florian Weimer <fweimer@redhat.com>
[BZ #178]
* string/Makefile (routines): Add strlcpy.
(tests): Add tst-strlcpy.
* string/Versions (2.21): Export strlcpy.
* string/strlcpy.c: New file.
* string/tst-strlcpy.c: Likewise.
* include/string.h (strlcpy): Declare as hidden.
* manual/string.h (Copying and Concatenation): Document strlcpy.
Update strncpy documentation.
* debug/Makefile (routines): Add strlcpy_chk.
* debug/Versions (2.21): Export __strlcpy_chk.
* debug/tst-chk1.c (doit): Test strlcpy.
* debug/strlcpy_chk.c: New file.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Add.
* sysdeps/unix/sysv/linux/alpha/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/arm/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/hppa/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/microblaze/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/sh/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
(GLIBC_2.21, strlcpy, __strlcpy_chk): Likewise.
diff --git a/NEWS b/NEWS
index 680c265..a24e178 100644
--- a/NEWS
+++ b/NEWS
@@ -9,7 +9,7 @@ Version 2.21
* The following bugs are resolved with this release:
- 17363, 17370.
+ 178, 17363, 17370.
Version 2.20
diff --git a/debug/Makefile b/debug/Makefile
index c284c51..c5a69bf 100644
--- a/debug/Makefile
+++ b/debug/Makefile
@@ -30,6 +30,7 @@ headers := execinfo.h
routines = backtrace backtracesyms backtracesymsfd noophooks \
memcpy_chk memmove_chk mempcpy_chk memset_chk stpcpy_chk \
strcat_chk strcpy_chk strncat_chk strncpy_chk stpncpy_chk \
+ strlcpy_chk \
sprintf_chk vsprintf_chk snprintf_chk vsnprintf_chk \
printf_chk fprintf_chk vprintf_chk vfprintf_chk \
gets_chk chk_fail readonly-area fgets_chk fgets_u_chk \
diff --git a/debug/Versions b/debug/Versions
index 0482c85..054f301 100644
--- a/debug/Versions
+++ b/debug/Versions
@@ -55,6 +55,9 @@ libc {
GLIBC_2.16 {
__poll_chk; __ppoll_chk;
}
+ GLIBC_2.21 {
+ __strlcpy_chk;
+ }
GLIBC_PRIVATE {
__fortify_fail;
}
diff --git a/debug/strlcpy_chk.c b/debug/strlcpy_chk.c
new file mode 100644
index 0000000..02dcb98
--- /dev/null
+++ b/debug/strlcpy_chk.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1991-2014 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <string.h>
+#include <memcopy.h>
+
+size_t
+__strlcpy_chk (char *__restrict s1, const char *__restrict s2,
+ size_t n, size_t s1len)
+{
+ if (__glibc_unlikely (s1len < n))
+ __chk_fail ();
+
+ return strlcpy (s1, s2, n);
+}
diff --git a/debug/tst-chk1.c b/debug/tst-chk1.c
index 3393153..48fb4a5 100644
--- a/debug/tst-chk1.c
+++ b/debug/tst-chk1.c
@@ -360,6 +360,10 @@ do_test (void)
strncpy (a.buf1 + (O + 6), "X", l0 + 4);
CHK_FAIL_END
+ CHK_FAIL_START
+ strlcpy (buf, "", sizeof (buf) + 1);
+ CHK_FAIL_END
+
# if !defined __cplusplus || defined __va_arg_pack
CHK_FAIL_START
sprintf (a.buf1 + (O + 7), "%d", num1);
diff --git a/include/string.h b/include/string.h
index 8323412..107db84 100644
--- a/include/string.h
+++ b/include/string.h
@@ -89,6 +89,7 @@ libc_hidden_proto (__strtok_r)
extern char *__strsep_g (char **__stringp, const char *__delim);
libc_hidden_proto (__strsep_g)
libc_hidden_proto (strnlen)
+libc_hidden_proto (strlcpy)
libc_hidden_proto (memmem)
libc_hidden_proto (__ffs)
diff --git a/manual/string.texi b/manual/string.texi
index ba5a2c7..0571099 100644
--- a/manual/string.texi
+++ b/manual/string.texi
@@ -576,17 +576,42 @@ there is no null terminator written into @var{to}.
If the length of @var{from} is less than @var{size}, then @code{strncpy}
copies all of @var{from}, followed by enough null characters to add up
-to @var{size} characters in all. This behavior is rarely useful, but it
-is specified by the @w{ISO C} standard.
+to @var{size} characters in all.
The behavior of @code{strncpy} is undefined if the strings overlap.
-Using @code{strncpy} as opposed to @code{strcpy} is a way to avoid bugs
+Not guaranteeing null termination and always overwriting the entire
+destination buffer makes @code{strncpy} rarely useful, but this behavior
+is specified by the @w{ISO C} standard. See @code{strlcpy} below for a
+more useful alternative.
+@end deftypefun
+
+@comment string.h
+@comment BSD
+@deftypefun size_t strlcpy (char *restrict @var{to}, const char *restrict @var{from}, size_t @var{size})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+This function is similar to @code{strcpy}, but copies at most @var{size}
+characters into @var{to}, including the terminating null character.
+
+If the length of @var{from} is equal to or more than @var{size}, then
+@code{strlcpy} copies just the first @samp{@var{size} - 1} characters.
+As a special case, if @var{size} is zero, no bytes are written to
+@var{to}.
+
+If the length of @var{from} is less than @var{size}, then @code{strlcpy}
+copies all of @var{from}, followed by a single null character.
+
+The return value of @code{strlcpy} is the length of the string @var{to}
+after the function call, or zero if @var{size} is zero.
+
+The behavior of @code{strlcpy} is undefined if the strings overlap or if
+the source or destination are null pointers.
+
+Using @code{strlcpy} as opposed to @code{strcpy} is a way to avoid bugs
relating to writing past the end of the allocated space for @var{to}.
-However, it can also make your program much slower in one common case:
-copying a string which is probably small into a potentially large buffer.
-In this case, @var{size} may be large, and when it is, @code{strncpy} will
-waste a considerable amount of time copying null characters.
+Unlike @code{strncpy}, @code{strlcpy} ensures that the destination
+string is always null-terminated (unless the buffer size is zero), and
+it does not fill the remaining part of the buffer with null characters.
@end deftypefun
@comment wchar.h
diff --git a/string/Makefile b/string/Makefile
index 98c2961..1033852 100644
--- a/string/Makefile
+++ b/string/Makefile
@@ -41,7 +41,7 @@ routines := strcat strchr strcmp strcoll strcpy strcspn \
addsep replace) \
envz basename \
strcoll_l strxfrm_l string-inlines memrchr \
- xpg-strerror strerror_l
+ xpg-strerror strerror_l strlcpy
strop-tests := memchr memcmp memcpy memmove mempcpy memset memccpy \
stpcpy stpncpy strcat strchr strcmp strcpy strcspn \
@@ -54,7 +54,7 @@ tests := tester inl-tester noinl-tester testcopy test-ffs \
tst-strtok tst-strxfrm bug-strcoll1 tst-strfry \
bug-strtok1 $(addprefix test-,$(strop-tests)) \
bug-envz1 tst-strxfrm2 tst-endian tst-svc2 \
- tst-strtok_r
+ tst-strtok_r tst-strlcpy
xtests = tst-strcoll-overflow
diff --git a/string/Versions b/string/Versions
index 59bf35a..b73526b 100644
--- a/string/Versions
+++ b/string/Versions
@@ -80,4 +80,7 @@ libc {
GLIBC_2.6 {
strerror_l;
}
+ GLIBC_2.21 {
+ strlcpy;
+ }
}
diff --git a/string/bits/string3.h b/string/bits/string3.h
index 7606090..ffe8f0b 100644
--- a/string/bits/string3.h
+++ b/string/bits/string3.h
@@ -38,6 +38,7 @@ __warndecl (__warn_memset_zero_len,
# undef stpcpy
# endif
# ifdef __USE_MISC
+# undef strlcpy
# undef bcopy
# undef bzero
# endif
@@ -149,3 +150,29 @@ __NTH (strncat (char *__restrict __dest, const char *__restrict __src,
{
return __builtin___strncat_chk (__dest, __src, __len, __bos (__dest));
}
+
+#ifdef __USE_MISC
+__warndecl (__warn_strlcpy_size_zero,
+ "strlcpy used with a size argument of zero");
+__warndecl (__warn_strlcpy_size_large,
+ "strlcpy used with a size argument which is too large");
+extern size_t __strlcpy_chk (char *__dest, const char *__src, size_t __n,
+ size_t __destlen) __THROW;
+
+__fortify_function size_t
+__NTH (strlcpy (char *__restrict __dest, const char *__restrict __src,
+ size_t __len))
+{
+ if (__builtin_constant_p (__len == 0) && __len == 0)
+ {
+ __warn_strlcpy_size_zero ();
+ return 0;
+ }
+ if (__builtin_constant_p (__len > __bos (__dest)) && __len > __bos (__dest))
+ __warn_strlcpy_size_large ();
+ if (__builtin_constant_p (__bos (__dest) == (size_t) -1)
+ && __bos (__dest) == (size_t) -1)
+ return strlcpy (__dest, __src, __len);
+ return __strlcpy_chk (__dest, __src, __len, __bos (__dest));
+}
+#endif
diff --git a/string/string.h b/string/string.h
index c79debc..a635918 100644
--- a/string/string.h
+++ b/string/string.h
@@ -578,6 +578,13 @@ extern char *stpncpy (char *__restrict __dest,
__THROW __nonnull ((1, 2));
#endif
+#ifdef __USE_MISC
+/* Copy at most N characters from SRC to DEST. */
+extern size_t strlcpy (char *__restrict __dest,
+ const char *__restrict __src, size_t __n)
+ __THROW __nonnull ((1, 2));
+#endif
+
#ifdef __USE_GNU
/* Compare S1 and S2 as strings holding name & indices/version numbers. */
extern int strverscmp (const char *__s1, const char *__s2)
diff --git a/string/strlcpy.c b/string/strlcpy.c
new file mode 100644
index 0000000..1ddfafb
--- /dev/null
+++ b/string/strlcpy.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 2014 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <string.h>
+
+#undef strlcpy
+
+size_t
+strlcpy(char *__restrict dest, const char *__restrict src, size_t size)
+{
+ if (__glibc_unlikely (size == 0))
+ return 0;
+
+ size_t src_length = strnlen (src, size);
+ if (__glibc_unlikely (src_length >= size))
+ {
+ /* Copy the leading portion of the string, excluding the NUL
+ character. The last character will be overwritten, but the
+ destination size is usually a multiple of a small power of
+ two, so writing it twice should be more efficient. */
+ memcpy (dest, src, size);
+ dest[size - 1] = '\0';
+ return size - 1;
+ }
+ else
+ {
+ /* Copy the string and its terminating NUL character. */
+ memcpy (dest, src, src_length + 1);
+ return src_length;
+ }
+}
+libc_hidden_def (strlcpy)
diff --git a/string/tst-strlcpy.c b/string/tst-strlcpy.c
new file mode 100644
index 0000000..c1ee9d3
--- /dev/null
+++ b/string/tst-strlcpy.c
@@ -0,0 +1,72 @@
+/* Copyright (C) 1998-2014 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#define CHECK(cond) \
+ if (!(cond)) \
+ { \
+ printf ("%s:%d: FAIL\n", __FILE__, __LINE__); \
+ exit (1); \
+ }
+
+static int
+do_test (void)
+{
+ struct {
+ char buf1[16];
+ char buf2[16];
+ } s;
+
+ memset (&s, '@', sizeof (s));
+ CHECK (strlcpy (s.buf1, "Hello!", 0) == 0);
+ CHECK (memcmp (&s, "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@", sizeof (s)) == 0);
+
+ memset (&s, '@', sizeof (s));
+ CHECK (strlcpy (s.buf1, "Hello!", sizeof (s.buf1)) == 6);
+ CHECK (memcmp (&s, "Hello!\0@@@@@@@@@@@@@@@@@@@@@@@@@", sizeof (s)) == 0);
+
+ memset (&s, '@', sizeof (s));
+ CHECK (strlcpy (s.buf1, "Hello, world!!!", sizeof (s.buf1)) == 15);
+ CHECK (memcmp (&s, "Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@",
+ sizeof (s)) == 0);
+
+ memset (&s, '@', sizeof (s));
+ CHECK (strlcpy (s.buf1, "Hello, world!!!", sizeof (s.buf1)) == 15);
+ unsigned i;
+ for (i = 0; i < sizeof (s); ++i) {
+ printf (" %u: %u\n", i, (unsigned) ((char *)&s)[i]);
+ }
+ CHECK (memcmp (&s, "Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@",
+ sizeof (s)) == 0);
+
+ memset (&s, '@', sizeof (s));
+ CHECK (strlcpy (s.buf1, "Hello, world!!!!!!!!", sizeof (s.buf1)) == 15);
+ for (i = 0; i < sizeof (s); ++i) {
+ printf (" %u: %u\n", i, (unsigned) ((char *)&s)[i]);
+ }
+ CHECK (memcmp (&s, "Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@",
+ sizeof (s)) == 0);
+
+ return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
+
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index aeee312..dd6bec6 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2081,3 +2081,7 @@ GLIBC_2.18
GLIBC_2.18 A
__cxa_thread_atexit_impl F
_mcount F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 980e088..8d5c64a 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2012,6 +2012,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist
index ce45208..0cd75dd 100644
--- a/sysdeps/unix/sysv/linux/arm/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/libc.abilist
@@ -89,6 +89,10 @@ GLIBC_2.17
GLIBC_2.18
GLIBC_2.18 A
__cxa_thread_atexit_impl F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.4
GLIBC_2.4 A
_Exit F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 58407fc..b2548f5 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -1860,6 +1860,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 3cb314d..71c7f9b 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2023,6 +2023,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index 067552d..9ed65fd 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -1881,6 +1881,10 @@ GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
getunwind F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index f06cc8e..298aed0 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -90,6 +90,10 @@ GLIBC_2.17
GLIBC_2.18
GLIBC_2.18 A
__cxa_thread_atexit_impl F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.4
GLIBC_2.4 A
_Exit F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 9010ea7..d11b097 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -1979,6 +1979,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/microblaze/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/libc.abilist
index 6e8d993..fd7c888 100644
--- a/sysdeps/unix/sysv/linux/microblaze/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/libc.abilist
@@ -2080,3 +2080,7 @@ GLIBC_2.18
xencrypt F
xprt_register F
xprt_unregister F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index 1c3490c..5e6c63a 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -1951,6 +1951,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index d8fd823..652b03d 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -1949,6 +1949,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index 3e6ed35..659c9f4 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -1947,6 +1947,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index c7e46aa..8e98919 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -1941,6 +1941,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index f27b48b..580c85d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -1983,6 +1983,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index a54382e..3f65044 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -1989,6 +1989,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
index 195b587..f21e487 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
@@ -90,6 +90,10 @@ GLIBC_2.17
GLIBC_2.18
GLIBC_2.18 A
__cxa_thread_atexit_impl F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
_Exit F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index 0194f0b..372fb0b 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -1984,6 +1984,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 807f702..6fdf3af 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -1880,6 +1880,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/sh/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist
index a653292..457c2ac 100644
--- a/sysdeps/unix/sysv/linux/sh/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/libc.abilist
@@ -1864,6 +1864,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 9defbdf..1f89cfe 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -1975,6 +1975,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index 35987fa..a1d0243 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -1908,6 +1908,10 @@ GLIBC_2.2.4
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
index caf74b8..e9a5540 100644
--- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
@@ -2091,3 +2091,7 @@ GLIBC_2.17
GLIBC_2.18
GLIBC_2.18 A
__cxa_thread_atexit_impl F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
index 68d975b..0c699ef 100644
--- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
@@ -2091,3 +2091,7 @@ GLIBC_2.17
GLIBC_2.18
GLIBC_2.18 A
__cxa_thread_atexit_impl F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
diff --git a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
index caf74b8..e9a5540 100644
--- a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
@@ -2091,3 +2091,7 @@ GLIBC_2.17
GLIBC_2.18
GLIBC_2.18 A
__cxa_thread_atexit_impl F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index 914b590..0e8714a 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -1854,6 +1854,10 @@ GLIBC_2.2.5
GLIBC_2.2.6
GLIBC_2.2.6 A
__nanosleep F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
GLIBC_2.3
GLIBC_2.3 A
__ctype_b_loc F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 0f64c8d..f4b638f 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2089,3 +2089,7 @@ GLIBC_2.17
GLIBC_2.18
GLIBC_2.18 A
__cxa_thread_atexit_impl F
+GLIBC_2.21
+ GLIBC_2.21 A
+ __strlcpy_chk F
+ strlcpy F
--
1.9.3