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import glibc-2.28-189.5.el8_6

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CentOS Sources 2022-06-16 05:31:04 -04:00 committed by Stepan Oksanichenko
parent 385bc0f199
commit 979352ca55
10 changed files with 975 additions and 1 deletions
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23
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commit 62db87ab24f9ca483f97f5e52ea92445f6a63c6f
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Jan 10 10:17:18 2022 -0300
timezone: Fix tst-bz28707 Makefile rule
The $(testdata)/XT5 rule is ambiguous and it may not be correct
evaluated.
diff --git a/timezone/Makefile b/timezone/Makefile
index ac7f483c130b5b4a..c4a63daadb8d5dc5 100644
--- a/timezone/Makefile
+++ b/timezone/Makefile
@@ -123,7 +123,8 @@ $(testdata)/XT%: testdata/XT%
$(make-target-directory)
cp $< $@
-$(testdata)/XT%: testdata/gen-XT%.sh
+$(testdata)/XT5: testdata/gen-XT5.sh
+ $(make-target-directory)
$(SHELL) $< > $@.tmp
mv $@.tmp $@

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commit f17164bd51db31f47fbbdae826c63b6d78184c45
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue May 18 07:21:33 2021 +0200
localedata: Use U+00AF MACRON in more EBCDIC charsets [BZ #27882]
This updates IBM256, IBM277, IBM278, IBM280, IBM284, IBM297, IBM424
in the same way that IBM273 was updated for bug 23290.
IBM256 and IBM424 still have holes after this change, so HAS_HOLES
is not updated.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
diff --git a/iconvdata/ibm277.c b/iconvdata/ibm277.c
index f93ca2acb8718dd5..0e337dbbdc06a02f 100644
--- a/iconvdata/ibm277.c
+++ b/iconvdata/ibm277.c
@@ -23,6 +23,6 @@
#define TABLES <ibm277.h>
#define CHARSET_NAME "IBM277//"
-#define HAS_HOLES 1 /* Not all 256 character are defined. */
+#define HAS_HOLES 0
#include <8bit-gap.c>
diff --git a/iconvdata/ibm278.c b/iconvdata/ibm278.c
index 4263000760472913..7450fb8e5b846101 100644
--- a/iconvdata/ibm278.c
+++ b/iconvdata/ibm278.c
@@ -23,6 +23,6 @@
#define TABLES <ibm278.h>
#define CHARSET_NAME "IBM278//"
-#define HAS_HOLES 1 /* Not all 256 character are defined. */
+#define HAS_HOLES 0
#include <8bit-gap.c>
diff --git a/iconvdata/ibm280.c b/iconvdata/ibm280.c
index 3efddd7dec2728d9..2ea5478e4e0d7007 100644
--- a/iconvdata/ibm280.c
+++ b/iconvdata/ibm280.c
@@ -23,6 +23,6 @@
#define TABLES <ibm280.h>
#define CHARSET_NAME "IBM280//"
-#define HAS_HOLES 1 /* Not all 256 character are defined. */
+#define HAS_HOLES 0
#include <8bit-gap.c>
diff --git a/iconvdata/ibm284.c b/iconvdata/ibm284.c
index 57dab27d0cec4a33..8dbbc6344d18528f 100644
--- a/iconvdata/ibm284.c
+++ b/iconvdata/ibm284.c
@@ -23,6 +23,6 @@
#define TABLES <ibm284.h>
#define CHARSET_NAME "IBM284//"
-#define HAS_HOLES 1 /* Not all 256 character are defined. */
+#define HAS_HOLES 0
#include <8bit-gap.c>
diff --git a/iconvdata/ibm297.c b/iconvdata/ibm297.c
index f355659afd4b4502..81e63ba1f28f1548 100644
--- a/iconvdata/ibm297.c
+++ b/iconvdata/ibm297.c
@@ -23,6 +23,6 @@
#define TABLES <ibm297.h>
#define CHARSET_NAME "IBM297//"
-#define HAS_HOLES 1 /* Not all 256 character are defined. */
+#define HAS_HOLES 0
#include <8bit-gap.c>
diff --git a/localedata/charmaps/IBM256 b/localedata/charmaps/IBM256
index 5cfd2db5f436cd07..bdc1abf0ade3bfc4 100644
--- a/localedata/charmaps/IBM256
+++ b/localedata/charmaps/IBM256
@@ -194,7 +194,7 @@ CHARMAP
<U00BE> /xb9 VULGAR FRACTION THREE QUARTERS
<U00AC> /xba NOT SIGN
<U007C> /xbb VERTICAL LINE
-<U203E> /xbc OVERLINE
+<U00AF> /xbc MACRON
<U00A8> /xbd DIAERESIS
<U00B4> /xbe ACUTE ACCENT
<U2017> /xbf DOUBLE LOW LINE
diff --git a/localedata/charmaps/IBM277 b/localedata/charmaps/IBM277
index 1c0b5cb9fb659364..2f6e3992109a2b33 100644
--- a/localedata/charmaps/IBM277
+++ b/localedata/charmaps/IBM277
@@ -195,7 +195,7 @@ CHARMAP
<U00BE> /xb9 VULGAR FRACTION THREE QUARTERS
<U00AC> /xba NOT SIGN
<U007C> /xbb VERTICAL LINE
-<U203E> /xbc OVERLINE
+<U00AF> /xbc MACRON
<U00A8> /xbd DIAERESIS
<U00B4> /xbe ACUTE ACCENT
<U00D7> /xbf MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM278 b/localedata/charmaps/IBM278
index 646961501c74c4df..bdfae7621028f003 100644
--- a/localedata/charmaps/IBM278
+++ b/localedata/charmaps/IBM278
@@ -196,7 +196,7 @@ CHARMAP
<U00BE> /xb9 VULGAR FRACTION THREE QUARTERS
<U00AC> /xba NOT SIGN
<U007C> /xbb VERTICAL LINE
-<U203E> /xbc OVERLINE
+<U00AF> /xbc MACRON
<U00A8> /xbd DIAERESIS
<U00B4> /xbe ACUTE ACCENT
<U00D7> /xbf MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM280 b/localedata/charmaps/IBM280
index 5de3b3e7b96796c0..4c31242806b0ac19 100644
--- a/localedata/charmaps/IBM280
+++ b/localedata/charmaps/IBM280
@@ -195,7 +195,7 @@ CHARMAP
<U00BE> /xb9 VULGAR FRACTION THREE QUARTERS
<U00AC> /xba NOT SIGN
<U007C> /xbb VERTICAL LINE
-<U203E> /xbc OVERLINE
+<U00AF> /xbc MACRON
<U00A8> /xbd DIAERESIS
<U00B4> /xbe ACUTE ACCENT
<U00D7> /xbf MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM284 b/localedata/charmaps/IBM284
index c64b2a65ab748540..46a8737a715e4e56 100644
--- a/localedata/charmaps/IBM284
+++ b/localedata/charmaps/IBM284
@@ -195,7 +195,7 @@ CHARMAP
<U00BE> /xb9 VULGAR FRACTION THREE QUARTERS
<U005E> /xba CIRCUMFLEX ACCENT
<U0021> /xbb EXCLAMATION MARK
-<U203E> /xbc OVERLINE
+<U00AF> /xbc MACRON
<U007E> /xbd TILDE
<U00B4> /xbe ACUTE ACCENT
<U00D7> /xbf MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM297 b/localedata/charmaps/IBM297
index 33b74eee437241aa..14361ad418cf1bc7 100644
--- a/localedata/charmaps/IBM297
+++ b/localedata/charmaps/IBM297
@@ -195,7 +195,7 @@ CHARMAP
<U00BE> /xb9 VULGAR FRACTION THREE QUARTERS
<U00AC> /xba NOT SIGN
<U007C> /xbb VERTICAL LINE
-<U203E> /xbc OVERLINE
+<U00AF> /xbc MACRON
<U007E> /xbd TILDE
<U00B4> /xbe ACUTE ACCENT
<U00D7> /xbf MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM424 b/localedata/charmaps/IBM424
index 883e43b8ae04ee4c..deca11e1b18ec0a6 100644
--- a/localedata/charmaps/IBM424
+++ b/localedata/charmaps/IBM424
@@ -175,7 +175,7 @@ CHARMAP
<U00BE> /xb9 VULGAR FRACTION THREE QUARTERS
<U005B> /xba LEFT SQUARE BRACKET
<U005D> /xbb RIGHT SQUARE BRACKET
-<U203E> /xbc OVERLINE
+<U00AF> /xbc MACRON
<U00A8> /xbd DIAERESIS
<U00B4> /xbe ACUTE ACCENT
<U00D7> /xbf MULTIPLICATION SIGN

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commit e1df30fbc2e2167a982c0e77a7ebee28f4dd0800
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu Jul 25 11:22:17 2019 -0300
Get new entropy on each attempt __gen_tempname (BZ #15813)
This is missing bit for fully fix BZ#15813 (the other two were fixed
by 359653aaacad463).
Checked on x86_64-linux-gnu.
[BZ #15813]
sysdeps/posix/tempname.c (__gen_tempname): get entrypy on each
attempt.
diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c
index 3d26f378021680ae..61d7a9f36d37abae 100644
--- a/sysdeps/posix/tempname.c
+++ b/sysdeps/posix/tempname.c
@@ -186,7 +186,6 @@ __gen_tempname (char *tmpl, int suffixlen, int flags, int kind)
{
int len;
char *XXXXXX;
- uint64_t value;
unsigned int count;
int fd = -1;
int save_errno = errno;
@@ -218,13 +217,13 @@ __gen_tempname (char *tmpl, int suffixlen, int flags, int kind)
/* This is where the Xs start. */
XXXXXX = &tmpl[len - 6 - suffixlen];
- /* Get some more or less random data. */
- RANDOM_BITS (value);
- value ^= (uint64_t)__getpid () << 32;
-
- for (count = 0; count < attempts; value += 7777, ++count)
+ uint64_t pid = (uint64_t) __getpid () << 32;
+ for (count = 0; count < attempts; ++count)
{
- uint64_t v = value;
+ uint64_t v;
+ /* Get some more or less random data. */
+ RANDOM_BITS (v);
+ v ^= pid;
/* Fill in the random bits. */
XXXXXX[0] = letters[v % 62];

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commit 8eaf34eda256ba3647ed6e7ed5c7c9aa19955d17
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Fri Dec 13 10:10:59 2019 +0100
hurd: Fix local PLT
* include/sys/random.h (__getrandom): Add hidden prototype.
* stdlib/getrandom.c (getrandom): Rename to hidden definition __getrandom.
Add weak alias.
* sysdeps/mach/hurd/getrandom.c (getrandom): Likewise.
* sysdeps/unix/sysv/linux/getrandom.c (getrandom): Likewise.
* sysdeps/mach/hurd/getentropy.c (getentropy): Use __getrandom instead of
getrandom.
Conflicts:
include/sys/random.h
(Missing backport of include/ consistency patch,
commit ebd32784ce2029d0461a90a79bc4e37f8d051765 upstream.)
sysdeps/mach/hurd/getentropy.c
(Hurd change has been dropped.)
sysdeps/unix/sysv/linux/dl-write.c
(Mismerge of sysdeps/mach/hurd/getrandom.c.)
diff --git a/include/sys/random.h b/include/sys/random.h
new file mode 100644
index 0000000000000000..6aa313d35dbdce8a
--- /dev/null
+++ b/include/sys/random.h
@@ -0,0 +1,11 @@
+#ifndef _SYS_RANDOM_H
+#include <stdlib/sys/random.h>
+
+# ifndef _ISOMAC
+
+extern ssize_t __getrandom (void *__buffer, size_t __length,
+ unsigned int __flags) __wur;
+libc_hidden_proto (__getrandom)
+
+# endif /* !_ISOMAC */
+#endif
diff --git a/stdlib/getrandom.c b/stdlib/getrandom.c
index 45234bea17c5c86c..f8056688e40a0215 100644
--- a/stdlib/getrandom.c
+++ b/stdlib/getrandom.c
@@ -22,10 +22,12 @@
/* Write up to LENGTH bytes of randomness starting at BUFFER.
Return the number of bytes written, or -1 on error. */
ssize_t
-getrandom (void *buffer, size_t length, unsigned int flags)
+__getrandom (void *buffer, size_t length, unsigned int flags)
{
__set_errno (ENOSYS);
return -1;
}
-
stub_warning (getrandom)
+
+libc_hidden_def (__getrandom)
+weak_alias (__getrandom, getrandom)
diff --git a/sysdeps/unix/sysv/linux/getrandom.c b/sysdeps/unix/sysv/linux/getrandom.c
index 435b037399665654..e34d7fdcd89d9b06 100644
--- a/sysdeps/unix/sysv/linux/getrandom.c
+++ b/sysdeps/unix/sysv/linux/getrandom.c
@@ -25,7 +25,7 @@
/* Write up to LENGTH bytes of randomness starting at BUFFER.
Return the number of bytes written, or -1 on error. */
ssize_t
-getrandom (void *buffer, size_t length, unsigned int flags)
+__getrandom (void *buffer, size_t length, unsigned int flags)
{
return SYSCALL_CANCEL (getrandom, buffer, length, flags);
}
@@ -33,7 +33,7 @@ getrandom (void *buffer, size_t length, unsigned int flags)
/* Always provide a definition, even if the kernel headers lack the
system call number. */
ssize_t
-getrandom (void *buffer, size_t length, unsigned int flags)
+__getrandom (void *buffer, size_t length, unsigned int flags)
{
/* Ideally, we would add a cancellation point here, but we currently
cannot do so inside libc. */
@@ -41,3 +41,5 @@ getrandom (void *buffer, size_t length, unsigned int flags)
return -1;
}
#endif
+libc_hidden_def (__getrandom)
+weak_alias (__getrandom, getrandom)

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Partial backport of:
commit 04986243d1af37ac0177ed2f9db0a066ebd2b212
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Wed Jul 15 19:35:58 2020 +0000
Remove internal usage of extensible stat functions
It replaces the internal usage of __{f,l}xstat{at}{64} with the
__{f,l}stat{at}{64}. It should not change the generate code since
sys/stat.h explicit defines redirections to internal calls back to
xstat* symbols.
Checked with a build for all affected ABIs. I also check on
x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Only the changes to include/sys/stat.h and sysdeps/posix/tempname.c
are included here.
diff --git a/include/sys/stat.h b/include/sys/stat.h
index b82d4527801d4797..c5b1938b87c9c5c3 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -52,6 +52,7 @@ extern __typeof (__fxstatat64) __fxstatat64 attribute_hidden;
#define lstat64(fname, buf) __lxstat64 (_STAT_VER, fname, buf)
#define __lstat64(fname, buf) __lxstat64 (_STAT_VER, fname, buf)
#define stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
+#define __stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
#define fstat64(fd, buf) __fxstat64 (_STAT_VER, fd, buf)
#define __fstat64(fd, buf) __fxstat64 (_STAT_VER, fd, buf)
#define fstat(fd, buf) __fxstat (_STAT_VER, fd, buf)
diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c
index 61d7a9f36d37abae..a7b404cf4410cb00 100644
--- a/sysdeps/posix/tempname.c
+++ b/sysdeps/posix/tempname.c
@@ -66,7 +66,6 @@
# define __gettimeofday gettimeofday
# define __mkdir mkdir
# define __open open
-# define __lxstat64(version, file, buf) lstat (file, buf)
# define __secure_getenv secure_getenv
#endif
@@ -97,7 +96,7 @@ static int
direxists (const char *dir)
{
struct_stat64 buf;
- return __xstat64 (_STAT_VER, dir, &buf) == 0 && S_ISDIR (buf.st_mode);
+ return __stat64 (dir, &buf) == 0 && S_ISDIR (buf.st_mode);
}
/* Path search algorithm, for tmpnam, tmpfile, etc. If DIR is
@@ -252,10 +251,10 @@ __gen_tempname (char *tmpl, int suffixlen, int flags, int kind)
case __GT_NOCREATE:
/* This case is backward from the other three. __gen_tempname
- succeeds if __xstat fails because the name does not exist.
+ succeeds if lstat fails because the name does not exist.
Note the continue to bypass the common logic at the bottom
of the loop. */
- if (__lxstat64 (_STAT_VER, tmpl, &st) < 0)
+ if (__lstat64 (tmpl, &st) < 0)
{
if (errno == ENOENT)
{

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commit 4dddd7e9cbecad4aa03ee5a9b9edb596e3d4e909
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Sep 29 08:56:07 2020 -0300
posix: Sync tempname with gnulib [BZ #26648]
It syncs with gnulib commit b1268f22f443e8e4b9e. The try_tempname_len
now uses getrandom on each iteration to get entropy and only uses the
clock plus ASLR as source of entropy if getrandom fails.
Checked on x86_64-linux-gnu and i686-linux-gnu.
Conflicts:
sysdeps/posix/tempname.c
(Missing tree-wide __gettimeofday to clock_gettime change,
commit 4a39c34c4f85de57fb4e648cfa1e774437d69680 upstream.
File was rebased to the upstream version.)
diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c
index a7b404cf4410cb00..f199b25a7a227751 100644
--- a/sysdeps/posix/tempname.c
+++ b/sysdeps/posix/tempname.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2021 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
@@ -13,10 +13,10 @@
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/>. */
+ <https://www.gnu.org/licenses/>. */
#if !_LIBC
-# include <config.h>
+# include <libc-config.h>
# include "tempname.h"
#endif
@@ -24,9 +24,6 @@
#include <assert.h>
#include <errno.h>
-#ifndef __set_errno
-# define __set_errno(Val) errno = (Val)
-#endif
#include <stdio.h>
#ifndef P_tmpdir
@@ -36,12 +33,12 @@
# define TMP_MAX 238328
#endif
#ifndef __GT_FILE
-# define __GT_FILE 0
-# define __GT_DIR 1
-# define __GT_NOCREATE 2
+# define __GT_FILE 0
+# define __GT_DIR 1
+# define __GT_NOCREATE 2
#endif
-#if !_LIBC && (GT_FILE != __GT_FILE || GT_DIR != __GT_DIR \
- || GT_NOCREATE != __GT_NOCREATE)
+#if !_LIBC && (GT_FILE != __GT_FILE || GT_DIR != __GT_DIR \
+ || GT_NOCREATE != __GT_NOCREATE)
# error report this to bug-gnulib@gnu.org
#endif
@@ -50,11 +47,11 @@
#include <string.h>
#include <fcntl.h>
-#include <sys/time.h>
+#include <stdalign.h>
#include <stdint.h>
-#include <unistd.h>
-
+#include <sys/random.h>
#include <sys/stat.h>
+#include <time.h>
#if _LIBC
# define struct_stat64 struct stat64
@@ -62,33 +59,38 @@
#else
# define struct_stat64 struct stat
# define __gen_tempname gen_tempname
-# define __getpid getpid
-# define __gettimeofday gettimeofday
# define __mkdir mkdir
# define __open open
-# define __secure_getenv secure_getenv
+# define __lstat64(file, buf) lstat (file, buf)
+# define __stat64(file, buf) stat (file, buf)
+# define __getrandom getrandom
+# define __clock_gettime64 clock_gettime
+# define __timespec64 timespec
#endif
-#ifdef _LIBC
-# include <random-bits.h>
-# define RANDOM_BITS(Var) ((Var) = random_bits ())
-# else
-# define RANDOM_BITS(Var) \
- { \
- struct timeval tv; \
- __gettimeofday (&tv, NULL); \
- (Var) = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec; \
- }
-#endif
+/* Use getrandom if it works, falling back on a 64-bit linear
+ congruential generator that starts with Var's value
+ mixed in with a clock's low-order bits if available. */
+typedef uint_fast64_t random_value;
+#define RANDOM_VALUE_MAX UINT_FAST64_MAX
+#define BASE_62_DIGITS 10 /* 62**10 < UINT_FAST64_MAX */
+#define BASE_62_POWER (62LL * 62 * 62 * 62 * 62 * 62 * 62 * 62 * 62 * 62)
-/* Use the widest available unsigned type if uint64_t is not
- available. The algorithm below extracts a number less than 62**6
- (approximately 2**35.725) from uint64_t, so ancient hosts where
- uintmax_t is only 32 bits lose about 3.725 bits of randomness,
- which is better than not having mkstemp at all. */
-#if !defined UINT64_MAX && !defined uint64_t
-# define uint64_t uintmax_t
+static random_value
+random_bits (random_value var)
+{
+ random_value r;
+ /* Without GRND_NONBLOCK it can be blocked for minutes on some systems. */
+ if (__getrandom (&r, sizeof r, GRND_NONBLOCK) == sizeof r)
+ return r;
+#if _LIBC || (defined CLOCK_MONOTONIC && HAVE_CLOCK_GETTIME)
+ /* Add entropy if getrandom did not work. */
+ struct __timespec64 tv;
+ __clock_gettime64 (CLOCK_MONOTONIC, &tv);
+ var ^= tv.tv_nsec;
#endif
+ return 2862933555777941757 * var + 3037000493;
+}
#if _LIBC
/* Return nonzero if DIR is an existent directory. */
@@ -107,7 +109,7 @@ direxists (const char *dir)
enough space in TMPL. */
int
__path_search (char *tmpl, size_t tmpl_len, const char *dir, const char *pfx,
- int try_tmpdir)
+ int try_tmpdir)
{
const char *d;
size_t dlen, plen;
@@ -121,35 +123,35 @@ __path_search (char *tmpl, size_t tmpl_len, const char *dir, const char *pfx,
{
plen = strlen (pfx);
if (plen > 5)
- plen = 5;
+ plen = 5;
}
if (try_tmpdir)
{
d = __secure_getenv ("TMPDIR");
if (d != NULL && direxists (d))
- dir = d;
+ dir = d;
else if (dir != NULL && direxists (dir))
- /* nothing */ ;
+ /* nothing */ ;
else
- dir = NULL;
+ dir = NULL;
}
if (dir == NULL)
{
if (direxists (P_tmpdir))
- dir = P_tmpdir;
+ dir = P_tmpdir;
else if (strcmp (P_tmpdir, "/tmp") != 0 && direxists ("/tmp"))
- dir = "/tmp";
+ dir = "/tmp";
else
- {
- __set_errno (ENOENT);
- return -1;
- }
+ {
+ __set_errno (ENOENT);
+ return -1;
+ }
}
dlen = strlen (dir);
while (dlen > 1 && dir[dlen - 1] == '/')
- dlen--; /* remove trailing slashes */
+ dlen--; /* remove trailing slashes */
/* check we have room for "${dir}/${pfx}XXXXXX\0" */
if (tmpl_len < dlen + 1 + plen + 6 + 1)
@@ -163,39 +165,91 @@ __path_search (char *tmpl, size_t tmpl_len, const char *dir, const char *pfx,
}
#endif /* _LIBC */
+#if _LIBC
+static int try_tempname_len (char *, int, void *, int (*) (char *, void *),
+ size_t);
+#endif
+
+static int
+try_file (char *tmpl, void *flags)
+{
+ int *openflags = flags;
+ return __open (tmpl,
+ (*openflags & ~O_ACCMODE)
+ | O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
+}
+
+static int
+try_dir (char *tmpl, void *flags _GL_UNUSED)
+{
+ return __mkdir (tmpl, S_IRUSR | S_IWUSR | S_IXUSR);
+}
+
+static int
+try_nocreate (char *tmpl, void *flags _GL_UNUSED)
+{
+ struct_stat64 st;
+
+ if (__lstat64 (tmpl, &st) == 0 || errno == EOVERFLOW)
+ __set_errno (EEXIST);
+ return errno == ENOENT ? 0 : -1;
+}
+
/* These are the characters used in temporary file names. */
static const char letters[] =
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
/* Generate a temporary file name based on TMPL. TMPL must match the
- rules for mk[s]temp (i.e. end in "XXXXXX", possibly with a suffix).
+ rules for mk[s]temp (i.e., end in at least X_SUFFIX_LEN "X"s,
+ possibly with a suffix).
The name constructed does not exist at the time of the call to
- __gen_tempname. TMPL is overwritten with the result.
+ this function. TMPL is overwritten with the result.
KIND may be one of:
- __GT_NOCREATE: simply verify that the name does not exist
- at the time of the call.
- __GT_FILE: create the file using open(O_CREAT|O_EXCL)
- and return a read-write fd. The file is mode 0600.
- __GT_DIR: create a directory, which will be mode 0700.
+ __GT_NOCREATE: simply verify that the name does not exist
+ at the time of the call.
+ __GT_FILE: create the file using open(O_CREAT|O_EXCL)
+ and return a read-write fd. The file is mode 0600.
+ __GT_DIR: create a directory, which will be mode 0700.
We use a clever algorithm to get hard-to-predict names. */
+#ifdef _LIBC
+static
+#endif
int
-__gen_tempname (char *tmpl, int suffixlen, int flags, int kind)
+gen_tempname_len (char *tmpl, int suffixlen, int flags, int kind,
+ size_t x_suffix_len)
{
- int len;
+ static int (*const tryfunc[]) (char *, void *) =
+ {
+ [__GT_FILE] = try_file,
+ [__GT_DIR] = try_dir,
+ [__GT_NOCREATE] = try_nocreate
+ };
+ return try_tempname_len (tmpl, suffixlen, &flags, tryfunc[kind],
+ x_suffix_len);
+}
+
+#ifdef _LIBC
+static
+#endif
+int
+try_tempname_len (char *tmpl, int suffixlen, void *args,
+ int (*tryfunc) (char *, void *), size_t x_suffix_len)
+{
+ size_t len;
char *XXXXXX;
unsigned int count;
int fd = -1;
int save_errno = errno;
- struct_stat64 st;
/* A lower bound on the number of temporary files to attempt to
generate. The maximum total number of temporary file names that
can exist for a given template is 62**6. It should never be
necessary to try all of these combinations. Instead if a reasonable
number of names is tried (we define reasonable as 62**3) fail to
- give the system administrator the chance to remove the problems. */
+ give the system administrator the chance to remove the problems.
+ This value requires that X_SUFFIX_LEN be at least 3. */
#define ATTEMPTS_MIN (62 * 62 * 62)
/* The number of times to attempt to generate a temporary file. To
@@ -206,82 +260,75 @@ __gen_tempname (char *tmpl, int suffixlen, int flags, int kind)
unsigned int attempts = ATTEMPTS_MIN;
#endif
+ /* A random variable. The initial value is used only the for fallback path
+ on 'random_bits' on 'getrandom' failure. Its initial value tries to use
+ some entropy from the ASLR and ignore possible bits from the stack
+ alignment. */
+ random_value v = ((uintptr_t) &v) / alignof (max_align_t);
+
+ /* How many random base-62 digits can currently be extracted from V. */
+ int vdigits = 0;
+
+ /* Least unfair value for V. If V is less than this, V can generate
+ BASE_62_DIGITS digits fairly. Otherwise it might be biased. */
+ random_value const unfair_min
+ = RANDOM_VALUE_MAX - RANDOM_VALUE_MAX % BASE_62_POWER;
+
len = strlen (tmpl);
- if (len < 6 + suffixlen || memcmp (&tmpl[len - 6 - suffixlen], "XXXXXX", 6))
+ if (len < x_suffix_len + suffixlen
+ || strspn (&tmpl[len - x_suffix_len - suffixlen], "X") < x_suffix_len)
{
__set_errno (EINVAL);
return -1;
}
/* This is where the Xs start. */
- XXXXXX = &tmpl[len - 6 - suffixlen];
+ XXXXXX = &tmpl[len - x_suffix_len - suffixlen];
- uint64_t pid = (uint64_t) __getpid () << 32;
for (count = 0; count < attempts; ++count)
{
- uint64_t v;
- /* Get some more or less random data. */
- RANDOM_BITS (v);
- v ^= pid;
-
- /* Fill in the random bits. */
- XXXXXX[0] = letters[v % 62];
- v /= 62;
- XXXXXX[1] = letters[v % 62];
- v /= 62;
- XXXXXX[2] = letters[v % 62];
- v /= 62;
- XXXXXX[3] = letters[v % 62];
- v /= 62;
- XXXXXX[4] = letters[v % 62];
- v /= 62;
- XXXXXX[5] = letters[v % 62];
-
- switch (kind)
- {
- case __GT_FILE:
- fd = __open (tmpl,
- (flags & ~O_ACCMODE)
- | O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
- break;
-
- case __GT_DIR:
- fd = __mkdir (tmpl, S_IRUSR | S_IWUSR | S_IXUSR);
- break;
-
- case __GT_NOCREATE:
- /* This case is backward from the other three. __gen_tempname
- succeeds if lstat fails because the name does not exist.
- Note the continue to bypass the common logic at the bottom
- of the loop. */
- if (__lstat64 (tmpl, &st) < 0)
- {
- if (errno == ENOENT)
- {
- __set_errno (save_errno);
- return 0;
- }
- else
- /* Give up now. */
- return -1;
- }
- continue;
-
- default:
- assert (! "invalid KIND in __gen_tempname");
- abort ();
- }
-
+ for (size_t i = 0; i < x_suffix_len; i++)
+ {
+ if (vdigits == 0)
+ {
+ do
+ v = random_bits (v);
+ while (unfair_min <= v);
+
+ vdigits = BASE_62_DIGITS;
+ }
+
+ XXXXXX[i] = letters[v % 62];
+ v /= 62;
+ vdigits--;
+ }
+
+ fd = tryfunc (tmpl, args);
if (fd >= 0)
- {
- __set_errno (save_errno);
- return fd;
- }
+ {
+ __set_errno (save_errno);
+ return fd;
+ }
else if (errno != EEXIST)
- return -1;
+ return -1;
}
/* We got out of the loop because we ran out of combinations to try. */
__set_errno (EEXIST);
return -1;
}
+
+int
+__gen_tempname (char *tmpl, int suffixlen, int flags, int kind)
+{
+ return gen_tempname_len (tmpl, suffixlen, flags, kind, 6);
+}
+
+#if !_LIBC
+int
+try_tempname (char *tmpl, int suffixlen, void *args,
+ int (*tryfunc) (char *, void *))
+{
+ return try_tempname_len (tmpl, suffixlen, args, tryfunc, 6);
+}
+#endif

17
SOURCES/glibc-rh2093457-5.patch Normal file
View File

@ -0,0 +1,17 @@
Downstream-only patch to use non-time64 identifiers in
sysdeps/posix/tempname.c. Upstream has switched to the time64
symbols.
diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c
index f199b25a7a227751..fcab9b26364021e4 100644
--- a/sysdeps/posix/tempname.c
+++ b/sysdeps/posix/tempname.c
@@ -56,6 +56,8 @@
#if _LIBC
# define struct_stat64 struct stat64
# define __secure_getenv __libc_secure_getenv
+# define __clock_gettime64 __clock_gettime
+# define __timespec64 timespec
#else
# define struct_stat64 struct stat
# define __gen_tempname gen_tempname

66
SOURCES/glibc-rh2093457-6.patch Normal file
View File

@ -0,0 +1,66 @@
commit f430293d842031f2afc3013f156e1018065e480e
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Jan 12 09:17:09 2021 -0300
posix: consume less entropy on tempname
The first getrandom is used only for __GT_NOCREATE, which is inherently
insecure and can use the entropy as a small improvement. On the
second and later attempts it might help against DoS attacks.
It sync with gnulib commit 854fbb81d91f7a0f2b463e7ace2499dee2f380f2.
Checked on x86_64-linux-gnu.
diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c
index fcab9b26364021e4..3435c4bf75a01f42 100644
--- a/sysdeps/posix/tempname.c
+++ b/sysdeps/posix/tempname.c
@@ -22,6 +22,7 @@
#include <sys/types.h>
#include <assert.h>
+#include <stdbool.h>
#include <errno.h>
@@ -79,11 +80,11 @@ typedef uint_fast64_t random_value;
#define BASE_62_POWER (62LL * 62 * 62 * 62 * 62 * 62 * 62 * 62 * 62 * 62)
static random_value
-random_bits (random_value var)
+random_bits (random_value var, bool use_getrandom)
{
random_value r;
/* Without GRND_NONBLOCK it can be blocked for minutes on some systems. */
- if (__getrandom (&r, sizeof r, GRND_NONBLOCK) == sizeof r)
+ if (use_getrandom && __getrandom (&r, sizeof r, GRND_NONBLOCK) == sizeof r)
return r;
#if _LIBC || (defined CLOCK_MONOTONIC && HAVE_CLOCK_GETTIME)
/* Add entropy if getrandom did not work. */
@@ -271,6 +272,13 @@ try_tempname_len (char *tmpl, int suffixlen, void *args,
/* How many random base-62 digits can currently be extracted from V. */
int vdigits = 0;
+ /* Whether to consume entropy when acquiring random bits. On the
+ first try it's worth the entropy cost with __GT_NOCREATE, which
+ is inherently insecure and can use the entropy to make it a bit
+ less secure. On the (rare) second and later attempts it might
+ help against DoS attacks. */
+ bool use_getrandom = tryfunc == try_nocreate;
+
/* Least unfair value for V. If V is less than this, V can generate
BASE_62_DIGITS digits fairly. Otherwise it might be biased. */
random_value const unfair_min
@@ -294,7 +302,10 @@ try_tempname_len (char *tmpl, int suffixlen, void *args,
if (vdigits == 0)
{
do
- v = random_bits (v);
+ {
+ v = random_bits (v, use_getrandom);
+ use_getrandom = true;
+ }
while (unfair_min <= v);
vdigits = BASE_62_DIGITS;

41
SOURCES/glibc-rh2094540.patch Normal file
View File

@ -0,0 +1,41 @@
From 82c7441f04e3c2a653ee29672731e040a1799c6b Mon Sep 17 00:00:00 2001
From: Matheus Castanho <msc@linux.ibm.com>
Date: Tue, 7 Jun 2022 10:27:26 -0300
Subject: powerpc: Fix VSX register number on __strncpy_power9 [BZ #29197]
__strncpy_power9 initializes VR 18 with zeroes to be used throughout the
code, including when zero-padding the destination string. However, the
v18 reference was mistakenly being used for stxv and stxvl, which take a
VSX vector as operand. The code ended up using the uninitialized VSR 18
register by mistake.
Both occurrences have been changed to use the proper VSX number for VR 18
(i.e. VSR 50).
Tested on powerpc, powerpc64 and powerpc64le.
Signed-off-by: Kewen Lin <linkw@gcc.gnu.org>
(cherry picked from commit 0218463dd8265ed937622f88ac68c7d984fe0cfc)
diff --git a/sysdeps/powerpc/powerpc64/le/power9/strncpy.S b/sysdeps/powerpc/powerpc64/le/power9/strncpy.S
index 291941c1e5..5421525ace 100644
--- a/sysdeps/powerpc/powerpc64/le/power9/strncpy.S
+++ b/sysdeps/powerpc/powerpc64/le/power9/strncpy.S
@@ -352,7 +352,7 @@ L(zero_padding_loop):
cmpldi cr6,r5,16 /* Check if length was reached. */
ble cr6,L(zero_padding_end)
- stxv v18,0(r11)
+ stxv 32+v18,0(r11)
addi r11,r11,16
addi r5,r5,-16
@@ -360,7 +360,7 @@ L(zero_padding_loop):
L(zero_padding_end):
sldi r10,r5,56 /* stxvl wants size in top 8 bits */
- stxvl v18,r11,r10 /* Partial store */
+ stxvl 32+v18,r11,r10 /* Partial store */
blr
.align 4

23
SPECS/glibc.spec
View File

@ -1,6 +1,6 @@
%define glibcsrcdir glibc-2.28
%define glibcversion 2.28
%define glibcrelease 189.1%{?dist}
%define glibcrelease 189.5%{?dist}
# Pre-release tarballs are pulled in from git using a command that is
# effectively:
#
@ -856,6 +856,15 @@ Patch661: glibc-rh2045063-3.patch
Patch662: glibc-rh2045063-4.patch
Patch663: glibc-rh2045063-5.patch
Patch664: glibc-rh2061727.patch
Patch665: glibc-rh2073432.patch
Patch666: glibc-rh2084564.patch
Patch667: glibc-rh2094540.patch
Patch668: glibc-rh2093457-1.patch
Patch669: glibc-rh2093457-2.patch
Patch670: glibc-rh2093457-3.patch
Patch671: glibc-rh2093457-4.patch
Patch672: glibc-rh2093457-5.patch
Patch673: glibc-rh2093457-6.patch
##############################################################################
# Continued list of core "glibc" package information:
@ -2671,6 +2680,18 @@ fi
%files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
%changelog
* Wed Jun 8 2022 Florian Weimer <fweimer@redhat.com> - 2.28-189.5
- Increase tempnam randomness (#2093457)
* Tue Jun 07 2022 DJ Delorie <dj@redhat.com> - 2.28-189.4
- Fix incorrect strncpy results on POWER9 (#2094540)
* Fri May 13 2022 Arjun Shankar <arjun@redhat.com> - 2.28-189.3
- Add missing MACRON to EBCDIC character sets (#2084564)
* Fri May 13 2022 Arjun Shankar <arjun@redhat.com> - 2.28-189.2
- timezone: Fix a test that causes occasional build failure (#2073432)
* Thu Mar 10 2022 Florian Weimer <fweimer@redhat.com> - 2.28-189.1
- nss: Avoid clobbering errno in get*ent via dlopen (#2061727)