diff options
Diffstat (limited to 'usr/src/lib/libc')
| -rw-r--r-- | usr/src/lib/libc/amd64/Makefile | 1 | ||||
| -rw-r--r-- | usr/src/lib/libc/i386/Makefile.com | 1 | ||||
| -rw-r--r-- | usr/src/lib/libc/port/mapfile-vers | 3 | ||||
| -rw-r--r-- | usr/src/lib/libc/port/sys/eventfd.c | 65 | ||||
| -rw-r--r-- | usr/src/lib/libc/sparc/Makefile.com | 1 |
5 files changed, 71 insertions, 0 deletions
diff --git a/usr/src/lib/libc/amd64/Makefile b/usr/src/lib/libc/amd64/Makefile index 9a496b0d7e..12fe1429fb 100644 --- a/usr/src/lib/libc/amd64/Makefile +++ b/usr/src/lib/libc/amd64/Makefile @@ -858,6 +858,7 @@ PORTSYS= \ execl.o \ execle.o \ execv.o \ + eventfd.o \ fcntl.o \ getpagesizes.o \ getpeerucred.o \ diff --git a/usr/src/lib/libc/i386/Makefile.com b/usr/src/lib/libc/i386/Makefile.com index 01f71c334c..b6a9c822c6 100644 --- a/usr/src/lib/libc/i386/Makefile.com +++ b/usr/src/lib/libc/i386/Makefile.com @@ -892,6 +892,7 @@ PORTSYS= \ chown.o \ corectl.o \ epoll.o \ + eventfd.o \ exacctsys.o \ execl.o \ execle.o \ diff --git a/usr/src/lib/libc/port/mapfile-vers b/usr/src/lib/libc/port/mapfile-vers index 70d37d04be..09db2c67e4 100644 --- a/usr/src/lib/libc/port/mapfile-vers +++ b/usr/src/lib/libc/port/mapfile-vers @@ -2815,6 +2815,9 @@ $endif epoll_pwait; _errfp; _errxfp; + eventfd; + eventfd_read; + eventfd_write; exportfs; _F_cplx_div; _F_cplx_div_ix; diff --git a/usr/src/lib/libc/port/sys/eventfd.c b/usr/src/lib/libc/port/sys/eventfd.c new file mode 100644 index 0000000000..bd2eba4efa --- /dev/null +++ b/usr/src/lib/libc/port/sys/eventfd.c @@ -0,0 +1,65 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright (c) 2014, Joyent, Inc. All rights reserved. + */ + +#include <sys/eventfd.h> +#include <sys/stat.h> +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> + +int +eventfd(unsigned int initval, int flags) +{ + int oflags = O_RDWR; + uint64_t val = initval; + int fd; + + if (flags & ~(EFD_NONBLOCK | EFD_CLOEXEC | EFD_SEMAPHORE)) + return (EINVAL); + + if (flags & EFD_NONBLOCK) + oflags |= O_NONBLOCK; + + if (flags & EFD_CLOEXEC) + oflags |= O_CLOEXEC; + + if ((fd = open("/dev/eventfd", oflags)) < 0) + return (-1); + + if ((flags & EFD_SEMAPHORE) && + ioctl(fd, EVENTFDIOC_SEMAPHORE, 0) != 0) { + (void) close(fd); + return (-1); + } + + if (write(fd, &val, sizeof (val)) < sizeof (val)) { + (void) close(fd); + return (-1); + } + + return (fd); +} + +int +eventfd_read(int fd, eventfd_t *valp) +{ + return (read(fd, valp, sizeof (*valp)) < sizeof (*valp) ? -1 : 0); +} + +int +eventfd_write(int fd, eventfd_t val) +{ + return (write(fd, &val, sizeof (val)) < sizeof (val) ? -1 : 0); +} diff --git a/usr/src/lib/libc/sparc/Makefile.com b/usr/src/lib/libc/sparc/Makefile.com index 4c5bbcfc96..11ad0b3996 100644 --- a/usr/src/lib/libc/sparc/Makefile.com +++ b/usr/src/lib/libc/sparc/Makefile.com @@ -926,6 +926,7 @@ PORTSYS= \ chown.o \ corectl.o \ epoll.o \ + eventfd.o \ exacctsys.o \ execl.o \ execle.o \ |