forked from rpms/glibc
db9712052c
* Mon Jan 24 2022 Florian Weimer <fweimer@redhat.com> - 2.34-21 - Sync with upstream branch release/2.34/master, commit 3438bbca90895d32825a52e31a77dc44d273c1c1: - Linux: Detect user namespace support in io/tst-getcwd-smallbuff - realpath: Avoid overwriting preexisting error - CVE-2021-3999: getcwd: Set errno to ERANGE for size == 1 - tst-realpath-toolong: Fix hurd build - CVE-2021-3998: realpath: ENAMETOOLONG for result larger than PATH_MAX - stdlib: Fix formatting of tests list in Makefile - stdlib: Sort tests in Makefile - support: Add helpers to create paths longer than PATH_MAX - powerpc: Fix unrecognized instruction errors with recent binutils - x86: use default cache size if it cannot be determined [BZ #28784] - CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug 28768) - sunrpc: Test case for clnt_create "unix" buffer overflow (bug 22542) - CVE-2022-23219: Buffer overflow in sunrpc clnt_create for "unix" (bug 22542) - socket: Add the __sockaddr_un_set function - Disable debuginfod in printer tests [BZ #28757] - Update syscall lists for Linux 5.16 Resolves: #2032279 Resolves: #2032276
166 lines
5.5 KiB
Diff
166 lines
5.5 KiB
Diff
commit 5575daae5099e779bb860b566b4d608418a5b832
|
|
Author: Florian Weimer <fweimer@redhat.com>
|
|
Date: Mon Jan 17 10:21:34 2022 +0100
|
|
|
|
socket: Add the __sockaddr_un_set function
|
|
|
|
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
|
|
(cherry picked from commit e368b12f6c16b6888dda99ba641e999b9c9643c8)
|
|
|
|
diff --git a/include/sys/un.h b/include/sys/un.h
|
|
index bdbee999806930f4..152afd9fc7426d8b 100644
|
|
--- a/include/sys/un.h
|
|
+++ b/include/sys/un.h
|
|
@@ -1 +1,13 @@
|
|
#include <socket/sys/un.h>
|
|
+
|
|
+#ifndef _ISOMAC
|
|
+
|
|
+/* Set ADDR->sun_family to AF_UNIX and ADDR->sun_path to PATHNAME.
|
|
+ Return 0 on success or -1 on failure (due to overlong PATHNAME).
|
|
+ The caller should always use sizeof (struct sockaddr_un) as the
|
|
+ socket address length, disregaring the length of PATHNAME.
|
|
+ Only concrete (non-abstract) pathnames are supported. */
|
|
+int __sockaddr_un_set (struct sockaddr_un *addr, const char *pathname)
|
|
+ attribute_hidden;
|
|
+
|
|
+#endif /* _ISOMAC */
|
|
diff --git a/socket/Makefile b/socket/Makefile
|
|
index 375957601024c12e..c2de11d73ca1e324 100644
|
|
--- a/socket/Makefile
|
|
+++ b/socket/Makefile
|
|
@@ -29,13 +29,17 @@ headers := sys/socket.h sys/un.h bits/sockaddr.h bits/socket.h \
|
|
routines := accept bind connect getpeername getsockname getsockopt \
|
|
listen recv recvfrom recvmsg send sendmsg sendto \
|
|
setsockopt shutdown socket socketpair isfdtype opensock \
|
|
- sockatmark accept4 recvmmsg sendmmsg
|
|
+ sockatmark accept4 recvmmsg sendmmsg sockaddr_un_set
|
|
|
|
tests := \
|
|
tst-accept4 \
|
|
tst-sockopt \
|
|
# tests
|
|
|
|
+tests-internal := \
|
|
+ tst-sockaddr_un_set \
|
|
+ # tests-internal
|
|
+
|
|
tests-time64 := \
|
|
tst-sockopt-time64 \
|
|
# tests
|
|
diff --git a/socket/sockaddr_un_set.c b/socket/sockaddr_un_set.c
|
|
new file mode 100644
|
|
index 0000000000000000..0bd40dc34e3d7efc
|
|
--- /dev/null
|
|
+++ b/socket/sockaddr_un_set.c
|
|
@@ -0,0 +1,41 @@
|
|
+/* Set the sun_path member of struct sockaddr_un.
|
|
+ Copyright (C) 2022 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
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <errno.h>
|
|
+#include <string.h>
|
|
+#include <sys/socket.h>
|
|
+#include <sys/un.h>
|
|
+
|
|
+int
|
|
+__sockaddr_un_set (struct sockaddr_un *addr, const char *pathname)
|
|
+{
|
|
+ size_t name_length = strlen (pathname);
|
|
+
|
|
+ /* The kernel supports names of exactly sizeof (addr->sun_path)
|
|
+ bytes, without a null terminator, but userspace does not; see the
|
|
+ SUN_LEN macro. */
|
|
+ if (name_length >= sizeof (addr->sun_path))
|
|
+ {
|
|
+ __set_errno (EINVAL); /* Error code used by the kernel. */
|
|
+ return -1;
|
|
+ }
|
|
+
|
|
+ addr->sun_family = AF_UNIX;
|
|
+ memcpy (addr->sun_path, pathname, name_length + 1);
|
|
+ return 0;
|
|
+}
|
|
diff --git a/socket/tst-sockaddr_un_set.c b/socket/tst-sockaddr_un_set.c
|
|
new file mode 100644
|
|
index 0000000000000000..29c2a81afda81b5e
|
|
--- /dev/null
|
|
+++ b/socket/tst-sockaddr_un_set.c
|
|
@@ -0,0 +1,62 @@
|
|
+/* Test the __sockaddr_un_set function.
|
|
+ Copyright (C) 2022 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
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+/* Re-compile the function because the version in libc is not
|
|
+ exported. */
|
|
+#include "sockaddr_un_set.c"
|
|
+
|
|
+#include <support/check.h>
|
|
+
|
|
+static int
|
|
+do_test (void)
|
|
+{
|
|
+ struct sockaddr_un sun;
|
|
+
|
|
+ memset (&sun, 0xcc, sizeof (sun));
|
|
+ __sockaddr_un_set (&sun, "");
|
|
+ TEST_COMPARE (sun.sun_family, AF_UNIX);
|
|
+ TEST_COMPARE (__sockaddr_un_set (&sun, ""), 0);
|
|
+
|
|
+ memset (&sun, 0xcc, sizeof (sun));
|
|
+ TEST_COMPARE (__sockaddr_un_set (&sun, "/example"), 0);
|
|
+ TEST_COMPARE_STRING (sun.sun_path, "/example");
|
|
+
|
|
+ {
|
|
+ char pathname[108]; /* Length of sun_path (ABI constant). */
|
|
+ memset (pathname, 'x', sizeof (pathname));
|
|
+ pathname[sizeof (pathname) - 1] = '\0';
|
|
+ memset (&sun, 0xcc, sizeof (sun));
|
|
+ TEST_COMPARE (__sockaddr_un_set (&sun, pathname), 0);
|
|
+ TEST_COMPARE (sun.sun_family, AF_UNIX);
|
|
+ TEST_COMPARE_STRING (sun.sun_path, pathname);
|
|
+ }
|
|
+
|
|
+ {
|
|
+ char pathname[109];
|
|
+ memset (pathname, 'x', sizeof (pathname));
|
|
+ pathname[sizeof (pathname) - 1] = '\0';
|
|
+ memset (&sun, 0xcc, sizeof (sun));
|
|
+ errno = 0;
|
|
+ TEST_COMPARE (__sockaddr_un_set (&sun, pathname), -1);
|
|
+ TEST_COMPARE (errno, EINVAL);
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#include <support/test-driver.c>
|