Add getrandom system call and <sys/random.h> header file [BZ #17252]
2016-09-08 Florian Weimer <fweimer@redhat.com>
[BZ #17252]
* stdlib/sys/random.h: New file.
(headers): Add it.
* stdlib/Makefile (routines): Add getrandom.
(tests): Add tst-getrandom.
* stdlib/Versions (GLIBC_2.25): Add getrandom, __getrandom.
* stdlib/getrandom.c: New file.
* stdlib/tst-getrandom.c: Likewise.
* manual/crypt.texi (Unpredictable Bytes): New section.
* manual/math.texi (Pseudo-Random Numbers): Add cross-reference.
* sysdeps/arm/nacl/libc.abilist: Add __getrandom.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
@@ -40,6 +40,8 @@ Version 2.25
for the Linux quota interface which predates kernel version 2.4.22 has
been removed.
+* The getrandom function and the <sys/random.h> header file have been added.
+
Security related changes:
On ARM EABI (32-bit), generating a backtrace for execution contexts which
@@ -45,6 +45,7 @@ encrypted authentication use normal DES.
* getpass:: Prompting the user for a password.
* crypt:: A one-way function for passwords.
* DES Encryption:: Routines for DES encryption.
+* Unpredictable Bytes:: Randomness for cryptography purposes.
@end menu
@node Legal Problems
@@ -428,3 +429,69 @@ each byte.
The @code{ecb_crypt}, @code{cbc_crypt}, and @code{des_setparity}
functions and their accompanying macros are all defined in the header
@file{rpc/des_crypt.h}.
+
+@node Unpredictable Bytes
+@section Generating Unpredictable Bytes
+
+Some cryptographic applications (such as session key generation) need
+unpredictable bytes.
+
+@comment sys/random.h
+@comment GNU
+@deftypefun int getrandom (void *@var{buffer}, size_t @var{length}, unsigned int @var{flags})
+@safety{@mtsafe{}@assafe{}@acsafe{}}
+
+This function writes @var{length} bytes of random data to the array
+starting at @var{buffer}. On success, this function returns the number
+of bytes which have been written to the buffer (which can be less than
+@var{length}). On error, @code{-1} is returned, and @code{errno} is
+updated accordingly.
+
+The @code{getrandom} function is declared in the header file
+@file{sys/random.h}. It is a GNU extension.
+
+The following flags are defined for the @var{flags} argument:
+
+@table @code
+@item GRND_RANDOM
+Use the blocking pool instead of the non-blocking pool to obtain
+randomness. By default, the non-blocking pool is used. The blocking
+pool corresponds to @file{/dev/random}, and the non-blocking pool to
+@file{/dev/urandom}.
+
+@item GRND_NONBLOCK
+Instead of blocking, return to the caller immediately if no data is
+available.
+@end table
+
+The @code{getrandom} function is a cancellation point.
+
+Even access to the non-blocking pool can block if the system has just
+booted and the pool has not yet been initialized.
+
+The @code{getrandom} function can fail with several errors, some of
+which are listed below. In addition, the function may not fill the
+buffer completely and return a value less than @var{length}.
+
+@table @code
+@item ENOSYS
+The kernel does not implement the @code{getrandom} system call.
+
+@item EAGAIN
+No random data was available and @code{GRND_NONBLOCK} was specified in
+@var{flags}.
+
+@item EFAULT
+The combination of @var{buffer} and @var{length} arguments specifies
+an invalid memory range.
+
+@item EINTR
+The system call was interrupted. During the system boot process, before
+the kernel randomness pool is initialized, this can happen even if
+@var{flags} is zero.
+
+@item EINVAL
+The @var{flags} argument contains an invalid combination of flags.
+@end table
+
+@end deftypefun
@@ -1414,7 +1414,8 @@ is convenient when you are debugging a program, but it is unhelpful if
you want the program to behave unpredictably. If you want a different
pseudo-random series each time your program runs, you must specify a
different seed each time. For ordinary purposes, basing the seed on the
-current time works well.
+current time works well. For random numbers in cryptography,
+@pxref{Unpredictable Bytes}.
You can obtain repeatable sequences of numbers on a particular machine type
by specifying the same initial seed value for the random number
@@ -28,7 +28,7 @@ headers := stdlib.h bits/stdlib.h bits/stdlib-ldbl.h bits/stdlib-float.h \
errno.h sys/errno.h bits/errno.h \
ucontext.h sys/ucontext.h \
alloca.h fmtmsg.h \
- bits/stdlib-bsearch.h
+ bits/stdlib-bsearch.h sys/random.h
routines := \
atof atoi atol atoll \
@@ -45,7 +45,7 @@ routines := \
srand48 seed48 lcong48 \
drand48_r erand48_r lrand48_r nrand48_r mrand48_r jrand48_r \
srand48_r seed48_r lcong48_r \
- drand48-iter \
+ drand48-iter getrandom \
strtol strtoul strtoll strtoull \
strtol_l strtoul_l strtoll_l strtoull_l \
strtof strtod strtold \
@@ -77,7 +77,7 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \
tst-tininess tst-strtod-underflow tst-tls-atexit \
tst-setcontext3 tst-tls-atexit-nodelete \
tst-strtol-locale tst-strtod-nan-locale tst-strfmon_l \
- tst-quick_exit tst-thread-quick_exit
+ tst-quick_exit tst-thread-quick_exit tst-getrandom
tests-static := tst-secure-getenv
ifeq ($(have-cxx-thread_local),yes)
CFLAGS-tst-quick_exit.o = -std=c++11
@@ -112,6 +112,10 @@ libc {
GLIBC_2.24 {
quick_exit;
}
+ GLIBC_2.25 {
+ getrandom;
+ __getrandom;
+ }
GLIBC_PRIVATE {
# functions which have an additional interface since they are
# are cancelable.
new file mode 100644
@@ -0,0 +1,31 @@
+/* Stub for getrandom.
+ Copyright (C) 2016 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 <errno.h>
+#include <sys/random.h>
+
+/* Write LENGTH bytes of randomness starting at BUFFER. Returns the
+ number of bytes written, or -1 on error. */
+ssize_t
+__getrandom (void *buffer, size_t length, unsigned int flags)
+{
+ __set_errno (ENOSYS);
+ return -1;
+}
+
+stub_warning (__getrandom)
new file mode 100644
@@ -0,0 +1,37 @@
+/* Interfaces for obtaining random bytes.
+ Copyright (C) 2016 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/>. */
+
+#ifndef _SYS_RANDOM_H
+#define _SYS_RANDOM_H 1
+
+/* Flags for use with getrandom. */
+#define GRND_NONBLOCK 1
+#define GRND_RANDOM 2
+
+/* Write LENGTH bytes of randomness starting at BUFFER. Returns the
+ number of bytes written, or -1 on error. */
+int getrandom (void *__buffer, size_t __length, unsigned int __flags)
+ __wur;
+int __getrandom (void *__buffer, size_t __length, unsigned int __flags)
+ __wur;
+
+/* Prevent accidental interposition of the getrandom symbol. */
+#define getrandom(buffer, length, flags) \
+ (0 + __getrandom (buffer, length, flags))
+
+#endif /* _SYS_RANDOM_H */
new file mode 100644
@@ -0,0 +1,166 @@
+/* Tests for the getrandom function.
+ Copyright (C) 2016 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 <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/random.h>
+
+/* Set to true if any errors are encountered. */
+static bool errors;
+
+/* Test getrandom with a single buffer length. */
+static void
+test_length (char *buffer, size_t length, unsigned int flags)
+{
+ memset (buffer, 0, length);
+ strcpy (buffer + length, "123");
+ ssize_t ret = getrandom (buffer, length, flags);
+ if (ret < 0)
+ {
+ if (!((flags & GRND_RANDOM)
+ && (flags & GRND_NONBLOCK)
+ && errno != EAGAIN))
+ {
+ printf ("error: getrandom (%zu, 0x%x): %m\n", length, flags);
+ errors = true;
+ }
+ }
+ if (ret != length)
+ {
+ if (flags & GRND_RANDOM)
+ {
+ if (ret == 0 || ret > length)
+ {
+ printf ("error: getrandom (%zu, 0x%x) returned %zd\n",
+ length, flags, ret);
+ errors = true;
+ }
+ }
+ else
+ {
+ printf ("error: getrandom (%zu, 0x%x) returned %zd\n",
+ length, flags, ret);
+ errors = true;
+ }
+ }
+ if (length >= 7)
+ {
+ /* One spurious test failure in 2**56 is sufficiently
+ unlikely. */
+ int non_null = 0;
+ for (int i = 0; i < length; ++i)
+ non_null += buffer[i] != 0;
+ if (non_null == 0)
+ {
+ printf ("error: getrandom (%zu, 0x%x) returned all-zero bytes\n",
+ length, flags);
+ errors = true;
+ }
+ }
+ if (memcmp (buffer + length, "123", 4) != 0)
+ {
+ printf ("error: getrandom (%zu, 0x%x) wrote spurious bytes\n",
+ length, flags);
+ errors = true;
+ }
+}
+
+/* Call getrandom repeatedly to fill the buffer. */
+static bool
+getrandom_full (char *buffer, size_t length, unsigned int flags)
+{
+ char *end = buffer + length;
+ while (buffer < end)
+ {
+ ssize_t ret = getrandom (buffer, end - buffer, flags);
+ if (ret < 0)
+ {
+ printf ("error: getrandom (%zu, 0x%x): %m\n", length, flags);
+ errors = true;
+ return false;
+ }
+ buffer += ret;
+ }
+
+ return true;
+}
+
+static void
+test_flags (unsigned int flags)
+{
+ /* Test various lengths, but only for !GRND_RANDOM, to conserve
+ entropy. */
+ {
+ enum { max_length = 300 };
+ char buffer[max_length + 4];
+ if (flags & GRND_RANDOM)
+ test_length (buffer, 0, flags);
+ else
+ {
+ for (int length = 0; length <= 9; ++length)
+ test_length (buffer, length, flags);
+ test_length (buffer, 16, flags);
+ test_length (buffer, max_length, flags);
+ }
+ }
+
+ /* Test that getrandom returns different data. */
+ if (!(flags & GRND_NONBLOCK))
+ {
+ char buffer1[8];
+ memset (buffer1, 0, sizeof (buffer1));
+
+ char buffer2[8];
+ memset (buffer2, 0, sizeof (buffer2));
+
+ if (getrandom_full (buffer1, sizeof (buffer1), flags)
+ && getrandom_full (buffer2, sizeof (buffer2), flags))
+ {
+ if (memcmp (buffer1, buffer2, sizeof (buffer1)) == 0)
+ {
+ printf ("error: getrandom returns constant value\n");
+ errors = true;
+ }
+ }
+ }
+}
+
+static int
+do_test (void)
+{
+ /* Check if getrandom is not supported by this system. */
+ if (getrandom (NULL, 0, 0) == -1 && errno == ENOSYS)
+ return 77;
+
+ for (int use_random = 0; use_random < 2; ++use_random)
+ for (int use_nonblock = 0; use_nonblock < 2; ++use_nonblock)
+ {
+ int flags = 0;
+ if (use_random)
+ flags |= GRND_RANDOM;
+ if (use_nonblock)
+ flags |= GRND_NONBLOCK;
+ test_flags (flags);
+ }
+ return errors;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
@@ -1843,6 +1843,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.25 gnu_dev_major F
GLIBC_2.25 gnu_dev_makedev F
GLIBC_2.25 gnu_dev_minor F
@@ -100,3 +100,5 @@ utimes - utimes i:sp __utimes utimes
vhangup - vhangup i:i vhangup
write - write Ci:ibn __libc_write __write write
writev - writev Ci:ipi __writev writev
+getrandom - getrandom Ci:bni __getrandom getrandom
+
@@ -2090,3 +2090,5 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
@@ -2001,6 +2001,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -91,6 +91,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
@@ -1855,6 +1855,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -2013,6 +2013,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -1877,6 +1877,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -92,6 +92,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0x98
@@ -1969,6 +1969,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -2090,3 +2090,5 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
@@ -1944,6 +1944,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -1942,6 +1942,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -1940,6 +1940,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -1935,6 +1935,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -2131,3 +2131,5 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
@@ -1973,6 +1973,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -1978,6 +1978,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -2178,3 +2178,5 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
@@ -92,6 +92,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 _Exit F
GLIBC_2.3 _IO_2_1_stderr_ D 0xe0
@@ -1973,6 +1973,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -1874,6 +1874,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -1859,6 +1859,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -1965,6 +1965,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -1903,6 +1903,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -2097,3 +2097,5 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
@@ -2097,3 +2097,5 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
@@ -2097,3 +2097,5 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
@@ -1854,6 +1854,8 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
@@ -2097,3 +2097,5 @@ GLIBC_2.23 fts64_set F
GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 __getrandom F
+GLIBC_2.25 getrandom F