[PATCH 4/8] socket: Add time64 alias for sendmmsg
Florian Weimer
fweimer@redhat.com
Mon Jul 5 13:42:08 GMT 2021
---
socket/sys/socket.h | 14 +-
sysdeps/unix/sysv/linux/Makefile | 4 +-
sysdeps/unix/sysv/linux/Versions | 1 +
sysdeps/unix/sysv/linux/arm/be/libc.abilist | 1 +
sysdeps/unix/sysv/linux/arm/le/libc.abilist | 1 +
sysdeps/unix/sysv/linux/csky/libc.abilist | 1 +
sysdeps/unix/sysv/linux/hppa/libc.abilist | 1 +
sysdeps/unix/sysv/linux/i386/libc.abilist | 1 +
.../sysv/linux/m68k/coldfire/libc.abilist | 1 +
.../unix/sysv/linux/m68k/m680x0/libc.abilist | 1 +
.../sysv/linux/microblaze/be/libc.abilist | 1 +
.../sysv/linux/microblaze/le/libc.abilist | 1 +
.../sysv/linux/mips/mips32/fpu/libc.abilist | 1 +
.../sysv/linux/mips/mips32/nofpu/libc.abilist | 1 +
.../sysv/linux/mips/mips64/n32/libc.abilist | 1 +
sysdeps/unix/sysv/linux/nios2/libc.abilist | 1 +
.../linux/powerpc/powerpc32/fpu/libc.abilist | 1 +
.../powerpc/powerpc32/nofpu/libc.abilist | 1 +
.../unix/sysv/linux/s390/s390-32/libc.abilist | 1 +
sysdeps/unix/sysv/linux/sendmmsg.c | 3 +
sysdeps/unix/sysv/linux/sh/be/libc.abilist | 1 +
sysdeps/unix/sysv/linux/sh/le/libc.abilist | 1 +
.../sysv/linux/sparc/sparc32/libc.abilist | 1 +
.../unix/sysv/linux/tst-scm_rights-time64.c | 1 +
sysdeps/unix/sysv/linux/tst-scm_rights.c | 186 ++++++++++++++++++
25 files changed, 226 insertions(+), 2 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/tst-scm_rights-time64.c
create mode 100644 sysdeps/unix/sysv/linux/tst-scm_rights.c
diff --git a/socket/sys/socket.h b/socket/sys/socket.h
index 5577e75b80..d02d976bb5 100644
--- a/socket/sys/socket.h
+++ b/socket/sys/socket.h
@@ -179,9 +179,21 @@ extern ssize_t sendmsg (int __fd, const struct msghdr *__message,
This function is a cancellation point and therefore not marked with
__THROW. */
+# ifndef __USE_TIME_BITS64
extern int sendmmsg (int __fd, struct mmsghdr *__vmessages,
unsigned int __vlen, int __flags);
-#endif
+# else
+# ifdef __REDIRECT
+extern int __REDIRECT (sendmmsg, (int __fd, struct mmsghdr *__vmessages,
+ unsigned int __vlen, int __flags),
+ __sendmmsg64);
+# else
+extern int __sendmmsg64 (int __fd, struct mmsghdr *__vmessages,
+ unsigned int __vlen, int __flags);
+# define sendmmsg __sendmmsg64
+# endif
+# endif /* __USE_TIME_BITS64 */
+#endif /* __USE_GNU */
/* Receive a message as described by MESSAGE from socket FD.
Returns the number of bytes read or -1 for errors.
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 6fe358cecc..cd13ab4e6a 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -116,7 +116,8 @@ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
tst-tgkill tst-sysvsem-linux tst-sysvmsg-linux tst-sysvshm-linux \
tst-timerfd tst-ppoll \
tst-clock_adjtime tst-adjtimex tst-ntp_adjtime tst-ntp_gettime \
- tst-ntp_gettimex tst-sigtimedwait tst-misalign-clone tst-prctl
+ tst-ntp_gettimex tst-sigtimedwait tst-misalign-clone tst-prctl \
+ tst-scm_rights
# Test for the symbol version of fcntl that was replaced in glibc 2.28.
ifeq ($(have-GLIBC_2.27)$(build-shared),yesyes)
@@ -135,6 +136,7 @@ tests-time64 += \
tst-sigtimedwait-time64 \
tst-timerfd-time64 \
tst-prctl-time64 \
+ tst-scm_rights-time64 \
# tests-time64
CFLAGS-tst-sigcontext-get_pc.c = -fasynchronous-unwind-tables
diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
index 97e1e81801..0fc5d59608 100644
--- a/sysdeps/unix/sysv/linux/Versions
+++ b/sysdeps/unix/sysv/linux/Versions
@@ -265,6 +265,7 @@ libc {
__semctl64;
__semtimedop64;
__sem_timedwait64;
+ __sendmmsg64;
__setitimer64;
__settimeofday64;
__shmctl64;
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index 06deef986f..6654462ff2 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -268,6 +268,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index cb5a95ebb9..e4f66ebad8 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -265,6 +265,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index 76a1898218..b145b90667 100644
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -2400,6 +2400,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index cb135fe6ca..2fcd2408ee 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2353,6 +2353,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 8941056337..9876c4fccc 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2537,6 +2537,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 7cec07ea16..1db5f6ac97 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -269,6 +269,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index edc488fe98..9ff084727a 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2480,6 +2480,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index b382d9b268..9bf0dc86d3 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2451,6 +2451,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index 75752d1400..6eca8d3e65 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -2448,6 +2448,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index e362490afb..3e10357c37 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -2445,6 +2445,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index d2eba312a7..40def98ca7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -2443,6 +2443,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index ec5d956d0c..21decc1ba4 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -2451,6 +2451,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index 5ffbab4d4c..c4a1d8f8dd 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2490,6 +2490,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index d4ba30a441..3afedd33c3 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -2507,6 +2507,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index 8eb206d36e..3d0366c7d5 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -2540,6 +2540,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index a3c80bc9ba..1323f731dd 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2505,6 +2505,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/sendmmsg.c b/sysdeps/unix/sysv/linux/sendmmsg.c
index 6093e9ed70..10aaff4d1f 100644
--- a/sysdeps/unix/sysv/linux/sendmmsg.c
+++ b/sysdeps/unix/sysv/linux/sendmmsg.c
@@ -35,3 +35,6 @@ __sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
}
libc_hidden_def (__sendmmsg)
weak_alias (__sendmmsg, sendmmsg)
+#if __TIMESIZE != 64
+weak_alias (__sendmmsg, __sendmmsg64)
+#endif
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index 6692749dac..af375af8d1 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2360,6 +2360,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index 2207e3811c..e151761455 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2357,6 +2357,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 16099127e5..ca186834b4 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -2500,6 +2500,7 @@ GLIBC_2.34 __sem_clockwait64 F
GLIBC_2.34 __sem_timedwait64 F
GLIBC_2.34 __semctl64 F
GLIBC_2.34 __semtimedop64 F
+GLIBC_2.34 __sendmmsg64 F
GLIBC_2.34 __setitimer64 F
GLIBC_2.34 __settimeofday64 F
GLIBC_2.34 __shmctl64 F
diff --git a/sysdeps/unix/sysv/linux/tst-scm_rights-time64.c b/sysdeps/unix/sysv/linux/tst-scm_rights-time64.c
new file mode 100644
index 0000000000..302613cbfa
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-scm_rights-time64.c
@@ -0,0 +1 @@
+#include "tst-scm_rights.c"
diff --git a/sysdeps/unix/sysv/linux/tst-scm_rights.c b/sysdeps/unix/sysv/linux/tst-scm_rights.c
new file mode 100644
index 0000000000..c85b873125
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-scm_rights.c
@@ -0,0 +1,186 @@
+/* Smoke test for SCM_RIGHTS.
+ Copyright (C) 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
+ 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/>. */
+
+/* This test passes a file descriptor from a subprocess to the parent
+ process, using recvmsg/sendmsg or recvmmsg/sendmmsg. */
+
+#include <fcntl.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/xunistd.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+/* String sent over the socket. */
+static char DATA[] = "descriptor";
+
+/* Path that is to be opened and sent over the socket. */
+#define PATH "/etc"
+
+/* True if sendmmsg/recvmmsg is to be used. */
+static bool use_multi_call;
+
+/* The pair of sockets used for coordination. The subprocess uses
+ sockets[1]. */
+static int sockets[2];
+
+/* Subprocess side of one send/receive test. */
+_Noreturn static void
+subprocess (void)
+{
+ /* The file descriptor to send. */
+ int fd = xopen (PATH, O_RDONLY, 0);
+
+ struct iovec iov = { .iov_base = DATA, .iov_len = sizeof (DATA) };
+ union
+ {
+ struct cmsghdr header;
+ char bytes[CMSG_SPACE (sizeof (int))];
+ } cmsg_storage;
+ struct mmsghdr mmhdr =
+ {
+ .msg_hdr =
+ {
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ .msg_control = cmsg_storage.bytes,
+ .msg_controllen = sizeof (cmsg_storage),
+ },
+ };
+
+ /* Configure the file descriptor for sending. */
+ struct cmsghdr *cmsg = CMSG_FIRSTHDR (&mmhdr.msg_hdr);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN (sizeof (int));
+ memcpy (CMSG_DATA (cmsg), &fd, sizeof (fd));
+ mmhdr.msg_hdr.msg_controllen = cmsg->cmsg_len;
+
+ /* Perform the send operation. */
+ int ret;
+ if (use_multi_call)
+ {
+ ret = sendmmsg (sockets[1], &mmhdr, 1, 0);
+ if (ret >= 0)
+ ret = mmhdr.msg_len;
+ }
+ else
+ ret = sendmsg (sockets[1], &mmhdr.msg_hdr, 0);
+ TEST_COMPARE (ret, sizeof (DATA));
+
+ xclose (fd);
+
+ /* Stop the process from exiting. */
+ while (true)
+ pause ();
+}
+
+/* Performs one send/receive test. */
+static void
+one_test (void)
+{
+ TEST_COMPARE (socketpair (AF_UNIX, SOCK_STREAM, 0, sockets), 0);
+
+ pid_t pid = xfork ();
+ if (pid == 0)
+ subprocess ();
+
+ char data_storage[sizeof (DATA) + 1];
+ struct iovec iov =
+ {
+ .iov_base = data_storage,
+ .iov_len = sizeof (data_storage)
+ };
+ union
+ {
+ struct cmsghdr header;
+ char bytes[CMSG_SPACE (sizeof (int))];
+ } cmsg_storage;
+ struct mmsghdr mmhdr =
+ {
+ .msg_hdr =
+ {
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ .msg_control = cmsg_storage.bytes,
+ .msg_controllen = sizeof (cmsg_storage),
+ },
+ };
+
+ /* Set up the space for receiving the file descriptor. */
+ struct cmsghdr *cmsg = CMSG_FIRSTHDR (&mmhdr.msg_hdr);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN (sizeof (int));
+ mmhdr.msg_hdr.msg_controllen = cmsg->cmsg_len;
+
+ /* Perform the receive operation. */
+ int ret;
+ if (use_multi_call)
+ {
+ ret = recvmmsg (sockets[0], &mmhdr, 1, 0, NULL);
+ if (ret >= 0)
+ ret = mmhdr.msg_len;
+ }
+ else
+ ret = recvmsg (sockets[0], &mmhdr.msg_hdr, 0);
+ TEST_COMPARE (ret, sizeof (DATA));
+ TEST_COMPARE_BLOB (data_storage, sizeof (DATA), DATA, sizeof (DATA));
+
+ /* Extract the file descriptor. */
+ TEST_VERIFY (CMSG_FIRSTHDR (&mmhdr.msg_hdr) != NULL);
+ TEST_COMPARE (CMSG_FIRSTHDR (&mmhdr.msg_hdr)->cmsg_len,
+ CMSG_LEN (sizeof (int)));
+ TEST_VERIFY (&cmsg_storage.header == CMSG_FIRSTHDR (&mmhdr.msg_hdr));
+ int fd;
+ memcpy (&fd, CMSG_DATA (CMSG_FIRSTHDR (&mmhdr.msg_hdr)), sizeof (fd));
+
+ /* Verify the received file descriptor. */
+ TEST_VERIFY (fd > 2);
+ struct stat64 st_fd;
+ TEST_COMPARE (fstat64 (fd, &st_fd), 0);
+ struct stat64 st_path;
+ TEST_COMPARE (stat64 (PATH, &st_path), 0);
+ TEST_COMPARE (st_fd.st_ino, st_path.st_ino);
+ TEST_COMPARE (st_fd.st_dev, st_path.st_dev);
+ xclose (fd);
+
+ /* Terminate the subprocess. */
+ TEST_COMPARE (kill (pid, SIGUSR1), 0);
+ int status;
+ TEST_COMPARE (xwaitpid (pid, &status, 0), pid);
+ TEST_VERIFY (WIFSIGNALED (status));
+ TEST_COMPARE (WTERMSIG (status), SIGUSR1);
+
+ xclose (sockets[0]);
+ xclose (sockets[1]);
+}
+
+static int
+do_test (void)
+{
+ one_test ();
+ use_multi_call = true;
+ one_test ();
+ return 0;
+}
+
+#include <support/test-driver.c>
--
2.31.1
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