Add eventfd(3) wrappers to libc.
eventfd_read/write one-liners are from musl libc. Submitted by: greg@unrelenting.technology Reviewed by: markj (previous version) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D26668
This commit is contained in:
parent
7a202823aa
commit
44c5db52e2
@ -47,6 +47,7 @@ SRCS+= __getosreldate.c \
|
||||
err.c \
|
||||
errlst.c \
|
||||
errno.c \
|
||||
eventfd.c \
|
||||
exec.c \
|
||||
exect.c \
|
||||
fdevname.c \
|
||||
|
@ -422,6 +422,9 @@ FBSD_1.5 {
|
||||
};
|
||||
|
||||
FBSD_1.6 {
|
||||
eventfd;
|
||||
eventfd_read;
|
||||
eventfd_write;
|
||||
getlogin_r;
|
||||
memalign;
|
||||
scandir_b;
|
||||
|
54
lib/libc/gen/eventfd.c
Normal file
54
lib/libc/gen/eventfd.c
Normal file
@ -0,0 +1,54 @@
|
||||
/*-
|
||||
* SPDX-License-Identifier: MIT
|
||||
*
|
||||
* Copyright (c) 2005-2020 Rich Felker, et al.
|
||||
* Copyright (c) 2020 Greg V
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining
|
||||
* a copy of this software and associated documentation files (the
|
||||
* "Software"), to deal in the Software without restriction, including
|
||||
* without limitation the rights to use, copy, modify, merge, publish,
|
||||
* distribute, sublicense, and/or sell copies of the Software, and to
|
||||
* permit persons to whom the Software is furnished to do so, subject to
|
||||
* the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include "namespace.h"
|
||||
#include <sys/eventfd.h>
|
||||
#include <sys/specialfd.h>
|
||||
#include <unistd.h>
|
||||
#include "un-namespace.h"
|
||||
#include "libc_private.h"
|
||||
|
||||
int eventfd(unsigned int initval, int flags)
|
||||
{
|
||||
struct specialfd_eventfd args;
|
||||
|
||||
args.initval = initval;
|
||||
args.flags = flags;
|
||||
return (__sys___specialfd(SPECIALFD_EVENTFD, &args, sizeof(args)));
|
||||
}
|
||||
|
||||
int eventfd_read(int fd, eventfd_t *value)
|
||||
{
|
||||
return (sizeof(*value) == _read(fd, value, sizeof(*value)) ? 0 : -1);
|
||||
}
|
||||
|
||||
int eventfd_write(int fd, eventfd_t value)
|
||||
{
|
||||
return (sizeof(value) == _write(fd, &value, sizeof(value)) ? 0 : -1);
|
||||
}
|
@ -382,6 +382,7 @@ int __sys_sigtimedwait(const __sigset_t *, struct __siginfo *,
|
||||
const struct timespec *);
|
||||
int __sys_sigwait(const __sigset_t *, int *);
|
||||
int __sys_sigwaitinfo(const __sigset_t *, struct __siginfo *);
|
||||
int __sys___specialfd(int, const void *, __size_t);
|
||||
int __sys_statfs(const char *, struct statfs *);
|
||||
int __sys_swapcontext(struct __ucontext *,
|
||||
const struct __ucontext *);
|
||||
|
@ -178,6 +178,7 @@ MAN+= abort2.2 \
|
||||
cpuset_getaffinity.2 \
|
||||
cpuset_getdomain.2 \
|
||||
dup.2 \
|
||||
eventfd.2 \
|
||||
execve.2 \
|
||||
_exit.2 \
|
||||
extattr_get_file.2 \
|
||||
@ -379,6 +380,8 @@ MLINKS+=cpuset.2 cpuset_getid.2 \
|
||||
MLINKS+=cpuset_getaffinity.2 cpuset_setaffinity.2
|
||||
MLINKS+=cpuset_getdomain.2 cpuset_setdomain.2
|
||||
MLINKS+=dup.2 dup2.2
|
||||
MLINKS+=eventfd.2 eventfd_read.3 \
|
||||
eventfd.2 eventfd_write.3
|
||||
MLINKS+=execve.2 fexecve.2
|
||||
MLINKS+=extattr_get_file.2 extattr.2 \
|
||||
extattr_get_file.2 extattr_delete_fd.2 \
|
||||
|
Loading…
Reference in New Issue
Block a user