mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 05:20:06 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
281 lines
8.0 KiB
C
281 lines
8.0 KiB
C
/* Copyright (C) 1995-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
|
|
|
|
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 <sys/msg.h>
|
|
#include <ipc_priv.h>
|
|
#include <sysdep.h>
|
|
#include <shlib-compat.h>
|
|
#include <errno.h>
|
|
#include <linux/posix_types.h> /* For __kernel_mode_t. */
|
|
|
|
/* POSIX states ipc_perm mode should have type of mode_t. */
|
|
_Static_assert (sizeof ((struct msqid_ds){0}.msg_perm.mode)
|
|
== sizeof (mode_t),
|
|
"sizeof (msqid_ds.msg_perm.mode) != sizeof (mode_t)");
|
|
|
|
#if __IPC_TIME64 == 0
|
|
typedef struct msqid_ds msgctl_arg_t;
|
|
#else
|
|
# include <struct_kernel_msqid64_ds.h>
|
|
|
|
static void
|
|
msqid64_to_kmsqid64 (const struct __msqid64_ds *msqid64,
|
|
struct kernel_msqid64_ds *kmsqid)
|
|
{
|
|
kmsqid->msg_perm = msqid64->msg_perm;
|
|
kmsqid->msg_stime = msqid64->msg_stime;
|
|
kmsqid->msg_stime_high = msqid64->msg_stime >> 32;
|
|
kmsqid->msg_rtime = msqid64->msg_rtime;
|
|
kmsqid->msg_rtime_high = msqid64->msg_rtime >> 32;
|
|
kmsqid->msg_ctime = msqid64->msg_ctime;
|
|
kmsqid->msg_ctime_high = msqid64->msg_ctime >> 32;
|
|
kmsqid->msg_cbytes = msqid64->msg_cbytes;
|
|
kmsqid->msg_qnum = msqid64->msg_qnum;
|
|
kmsqid->msg_qbytes = msqid64->msg_qbytes;
|
|
kmsqid->msg_lspid = msqid64->msg_lspid;
|
|
kmsqid->msg_lrpid = msqid64->msg_lrpid;
|
|
}
|
|
|
|
static void
|
|
kmsqid64_to_msqid64 (const struct kernel_msqid64_ds *kmsqid,
|
|
struct __msqid64_ds *msqid64)
|
|
{
|
|
msqid64->msg_perm = kmsqid->msg_perm;
|
|
msqid64->msg_stime = kmsqid->msg_stime
|
|
| ((__time64_t) kmsqid->msg_stime_high << 32);
|
|
msqid64->msg_rtime = kmsqid->msg_rtime
|
|
| ((__time64_t) kmsqid->msg_rtime_high << 32);
|
|
msqid64->msg_ctime = kmsqid->msg_ctime
|
|
| ((__time64_t) kmsqid->msg_ctime_high << 32);
|
|
msqid64->msg_cbytes = kmsqid->msg_cbytes;
|
|
msqid64->msg_qnum = kmsqid->msg_qnum;
|
|
msqid64->msg_qbytes = kmsqid->msg_qbytes;
|
|
msqid64->msg_lspid = kmsqid->msg_lspid;
|
|
msqid64->msg_lrpid = kmsqid->msg_lrpid;
|
|
}
|
|
|
|
typedef struct kernel_msqid64_ds msgctl_arg_t;
|
|
#endif
|
|
|
|
static int
|
|
msgctl_syscall (int msqid, int cmd, msgctl_arg_t *buf)
|
|
{
|
|
#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
|
|
return INLINE_SYSCALL_CALL (msgctl, msqid, cmd | __IPC_64, buf);
|
|
#else
|
|
return INLINE_SYSCALL_CALL (ipc, IPCOP_msgctl, msqid, cmd | __IPC_64, 0,
|
|
buf);
|
|
#endif
|
|
}
|
|
|
|
int
|
|
__msgctl64 (int msqid, int cmd, struct __msqid64_ds *buf)
|
|
{
|
|
#if __IPC_TIME64
|
|
struct kernel_msqid64_ds ksemid, *arg = NULL;
|
|
#else
|
|
msgctl_arg_t *arg;
|
|
#endif
|
|
|
|
switch (cmd)
|
|
{
|
|
case IPC_RMID:
|
|
arg = NULL;
|
|
break;
|
|
|
|
case IPC_SET:
|
|
case IPC_STAT:
|
|
case MSG_STAT:
|
|
case MSG_STAT_ANY:
|
|
#if __IPC_TIME64
|
|
if (buf != NULL)
|
|
{
|
|
msqid64_to_kmsqid64 (buf, &ksemid);
|
|
arg = &ksemid;
|
|
}
|
|
# ifdef __ASSUME_SYSVIPC_BROKEN_MODE_T
|
|
if (cmd == IPC_SET)
|
|
arg->msg_perm.mode *= 0x10000U;
|
|
# endif
|
|
#else
|
|
arg = buf;
|
|
#endif
|
|
break;
|
|
|
|
case IPC_INFO:
|
|
case MSG_INFO:
|
|
/* This is a Linux extension where kernel returns a 'struct msginfo'
|
|
instead. */
|
|
arg = (__typeof__ (arg)) buf;
|
|
break;
|
|
|
|
default:
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
int ret = msgctl_syscall (msqid, cmd, arg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
switch (cmd)
|
|
{
|
|
case IPC_STAT:
|
|
case MSG_STAT:
|
|
case MSG_STAT_ANY:
|
|
#ifdef __ASSUME_SYSVIPC_BROKEN_MODE_T
|
|
arg->msg_perm.mode >>= 16;
|
|
#else
|
|
/* Old Linux kernel versions might not clear the mode padding. */
|
|
if (sizeof ((struct msqid_ds){0}.msg_perm.mode)
|
|
!= sizeof (__kernel_mode_t))
|
|
arg->msg_perm.mode &= 0xFFFF;
|
|
#endif
|
|
|
|
#if __IPC_TIME64
|
|
kmsqid64_to_msqid64 (arg, buf);
|
|
#endif
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#if __TIMESIZE != 64
|
|
libc_hidden_def (__msgctl64)
|
|
|
|
static void
|
|
msqid_to_msqid64 (struct __msqid64_ds *mq64, const struct msqid_ds *mq)
|
|
{
|
|
mq64->msg_perm = mq->msg_perm;
|
|
mq64->msg_stime = mq->msg_stime
|
|
| ((__time64_t) mq->__msg_stime_high << 32);
|
|
mq64->msg_rtime = mq->msg_rtime
|
|
| ((__time64_t) mq->__msg_rtime_high << 32);
|
|
mq64->msg_ctime = mq->msg_ctime
|
|
| ((__time64_t) mq->__msg_ctime_high << 32);
|
|
mq64->msg_cbytes = mq->msg_cbytes;
|
|
mq64->msg_qnum = mq->msg_qnum;
|
|
mq64->msg_qbytes = mq->msg_qbytes;
|
|
mq64->msg_lspid = mq->msg_lspid;
|
|
mq64->msg_lrpid = mq->msg_lrpid;
|
|
}
|
|
|
|
static void
|
|
msqid64_to_msqid (struct msqid_ds *mq, const struct __msqid64_ds *mq64)
|
|
{
|
|
mq->msg_perm = mq64->msg_perm;
|
|
mq->msg_stime = mq64->msg_stime;
|
|
mq->__msg_stime_high = 0;
|
|
mq->msg_rtime = mq64->msg_rtime;
|
|
mq->__msg_rtime_high = 0;
|
|
mq->msg_ctime = mq64->msg_ctime;
|
|
mq->__msg_ctime_high = 0;
|
|
mq->msg_cbytes = mq64->msg_cbytes;
|
|
mq->msg_qnum = mq64->msg_qnum;
|
|
mq->msg_qbytes = mq64->msg_qbytes;
|
|
mq->msg_lspid = mq64->msg_lspid;
|
|
mq->msg_lrpid = mq64->msg_lrpid;
|
|
}
|
|
|
|
int
|
|
__msgctl (int msqid, int cmd, struct msqid_ds *buf)
|
|
{
|
|
struct __msqid64_ds msqid64, *buf64 = NULL;
|
|
if (buf != NULL)
|
|
{
|
|
/* This is a Linux extension where kernel returns a 'struct msginfo'
|
|
instead. */
|
|
if (cmd == IPC_INFO || cmd == MSG_INFO)
|
|
buf64 = (struct __msqid64_ds *) buf;
|
|
else
|
|
{
|
|
msqid_to_msqid64 (&msqid64, buf);
|
|
buf64 = &msqid64;
|
|
}
|
|
}
|
|
|
|
int ret = __msgctl64 (msqid, cmd, buf64);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
switch (cmd)
|
|
{
|
|
case IPC_STAT:
|
|
case MSG_STAT:
|
|
case MSG_STAT_ANY:
|
|
msqid64_to_msqid (buf, buf64);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
#ifndef DEFAULT_VERSION
|
|
# ifndef __ASSUME_SYSVIPC_BROKEN_MODE_T
|
|
# define DEFAULT_VERSION GLIBC_2_2
|
|
# else
|
|
# define DEFAULT_VERSION GLIBC_2_31
|
|
# endif
|
|
#endif
|
|
versioned_symbol (libc, __msgctl, msgctl, DEFAULT_VERSION);
|
|
|
|
#if defined __ASSUME_SYSVIPC_BROKEN_MODE_T \
|
|
&& SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_31)
|
|
int
|
|
attribute_compat_text_section
|
|
__msgctl_mode16 (int msqid, int cmd, struct msqid_ds *buf)
|
|
{
|
|
return msgctl_syscall (msqid, cmd, (msgctl_arg_t *) buf);
|
|
}
|
|
compat_symbol (libc, __msgctl_mode16, msgctl, GLIBC_2_2);
|
|
#endif
|
|
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
|
|
struct __old_msqid_ds
|
|
{
|
|
struct __old_ipc_perm msg_perm; /* structure describing operation permission */
|
|
struct msg *__msg_first; /* pointer to first message on queue */
|
|
struct msg *__msg_last; /* pointer to last message on queue */
|
|
__time_t msg_stime; /* time of last msgsnd command */
|
|
__time_t msg_rtime; /* time of last msgrcv command */
|
|
__time_t msg_ctime; /* time of last change */
|
|
struct wait_queue *__wwait; /* ??? */
|
|
struct wait_queue *__rwait; /* ??? */
|
|
unsigned short int __msg_cbytes; /* current number of bytes on queue */
|
|
unsigned short int msg_qnum; /* number of messages currently on queue */
|
|
unsigned short int msg_qbytes; /* max number of bytes allowed on queue */
|
|
__ipc_pid_t msg_lspid; /* pid of last msgsnd() */
|
|
__ipc_pid_t msg_lrpid; /* pid of last msgrcv() */
|
|
};
|
|
|
|
int
|
|
attribute_compat_text_section
|
|
__old_msgctl (int msqid, int cmd, struct __old_msqid_ds *buf)
|
|
{
|
|
#if defined __ASSUME_DIRECT_SYSVIPC_SYSCALLS \
|
|
&& !defined __ASSUME_SYSVIPC_DEFAULT_IPC_64
|
|
/* For architecture that have wire-up msgctl but also have __IPC_64 to a
|
|
value different than default (0x0) it means the compat symbol used the
|
|
__NR_ipc syscall. */
|
|
return INLINE_SYSCALL_CALL (msgctl, msqid, cmd, buf);
|
|
#else
|
|
return INLINE_SYSCALL_CALL (ipc, IPCOP_msgctl, msqid, cmd, 0, buf);
|
|
#endif
|
|
}
|
|
compat_symbol (libc, __old_msgctl, msgctl, GLIBC_2_0);
|
|
#endif
|