svn commit: r359930 - in head: lib/libc/include lib/libc/sys sys/compat/freebsd32 sys/kern tools/build
Kyle Evans
kevans at FreeBSD.org
Tue Apr 14 18:07:44 UTC 2020
Author: kevans
Date: Tue Apr 14 18:07:42 2020
New Revision: 359930
URL: https://svnweb.freebsd.org/changeset/base/359930
Log:
Mark closefrom(2) COMPAT12, reimplement in libc to wrap close_range
Include a temporarily compatibility shim as well for kernels predating
close_range, since closefrom is used in some critical areas.
Reviewed by: markj (previous version), kib
Differential Revision: https://reviews.freebsd.org/D24399
Added:
head/lib/libc/sys/closefrom.c (contents, props changed)
Modified:
head/lib/libc/include/libc_private.h
head/lib/libc/sys/Makefile.inc
head/lib/libc/sys/Symbol.map
head/sys/compat/freebsd32/syscalls.master
head/sys/kern/kern_descrip.c
head/sys/kern/syscalls.master
head/tools/build/depend-cleanup.sh
Modified: head/lib/libc/include/libc_private.h
==============================================================================
--- head/lib/libc/include/libc_private.h Tue Apr 14 16:56:57 2020 (r359929)
+++ head/lib/libc/include/libc_private.h Tue Apr 14 18:07:42 2020 (r359930)
@@ -331,6 +331,7 @@ int __sys_clock_gettime(__clockid_t, struct timespec
int __sys_clock_nanosleep(__clockid_t, int,
const struct timespec *, struct timespec *);
int __sys_close(int);
+int __sys_close_range(unsigned, unsigned, int);
int __sys_connect(int, const struct sockaddr *, __socklen_t);
int __sys_fcntl(int, int, ...);
int __sys_fdatasync(int);
Modified: head/lib/libc/sys/Makefile.inc
==============================================================================
--- head/lib/libc/sys/Makefile.inc Tue Apr 14 16:56:57 2020 (r359929)
+++ head/lib/libc/sys/Makefile.inc Tue Apr 14 18:07:42 2020 (r359930)
@@ -45,6 +45,7 @@ NOASM+= getdirentries.o
PSEUDO+= _getdirentries.o
SRCS+= brk.c
+SRCS+= closefrom.c
SRCS+= pipe.c
SRCS+= shm_open.c
SRCS+= vadvise.c
Modified: head/lib/libc/sys/Symbol.map
==============================================================================
--- head/lib/libc/sys/Symbol.map Tue Apr 14 16:56:57 2020 (r359929)
+++ head/lib/libc/sys/Symbol.map Tue Apr 14 18:07:42 2020 (r359930)
@@ -520,8 +520,6 @@ FBSDprivate_1.0 {
__sys_clock_settime;
_close;
__sys_close;
- _closefrom;
- __sys_closefrom;
_connect;
__sys_connect;
_cpuset;
Added: head/lib/libc/sys/closefrom.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/lib/libc/sys/closefrom.c Tue Apr 14 18:07:42 2020 (r359930)
@@ -0,0 +1,47 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 Kyle Evans <kevans at FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#include "libc_private.h"
+
+#define CLOSE_RANGE_OSREL 1300091
+
+void
+closefrom(int lowfd)
+{
+
+ if (__getosreldate() >= CLOSE_RANGE_OSREL)
+ __sys_close_range(lowfd, ~0U, 0);
+ else
+ /* Fallback to closefrom(2) on older kernels. */
+ syscall(SYS_freebsd12_closefrom, lowfd);
+}
Modified: head/sys/compat/freebsd32/syscalls.master
==============================================================================
--- head/sys/compat/freebsd32/syscalls.master Tue Apr 14 16:56:57 2020 (r359929)
+++ head/sys/compat/freebsd32/syscalls.master Tue Apr 14 18:07:42 2020 (r359930)
@@ -980,7 +980,7 @@
507 AUE_JAIL_SET STD { int freebsd32_jail_set(struct iovec32 *iovp, \
unsigned int iovcnt, int flags); }
508 AUE_JAIL_REMOVE NOPROTO { int jail_remove(int jid); }
-509 AUE_CLOSEFROM NOPROTO { int closefrom(int lowfd); }
+509 AUE_CLOSEFROM COMPAT12|NOPROTO { int closefrom(int lowfd); }
510 AUE_SEMCTL NOSTD { int freebsd32_semctl(int semid, int semnum, \
int cmd, union semun32 *arg); }
511 AUE_MSGCTL NOSTD { int freebsd32_msgctl(int msqid, int cmd, \
Modified: head/sys/kern/kern_descrip.c
==============================================================================
--- head/sys/kern/kern_descrip.c Tue Apr 14 16:56:57 2020 (r359929)
+++ head/sys/kern/kern_descrip.c Tue Apr 14 18:07:42 2020 (r359930)
@@ -1372,17 +1372,18 @@ sys_close_range(struct thread *td, struct close_range_
return (kern_close_range(td, uap->lowfd, uap->highfd));
}
+#ifdef COMPAT_FREEBSD12
/*
* Close open file descriptors.
*/
#ifndef _SYS_SYSPROTO_H_
-struct closefrom_args {
+struct freebsd12_closefrom_args {
int lowfd;
};
#endif
/* ARGSUSED */
int
-sys_closefrom(struct thread *td, struct closefrom_args *uap)
+freebsd12_closefrom(struct thread *td, struct freebsd12_closefrom_args *uap)
{
u_int lowfd;
@@ -1395,6 +1396,7 @@ sys_closefrom(struct thread *td, struct closefrom_args
lowfd = MAX(0, uap->lowfd);
return (kern_close_range(td, lowfd, ~0U));
}
+#endif /* COMPAT_FREEBSD12 */
#if defined(COMPAT_43)
/*
Modified: head/sys/kern/syscalls.master
==============================================================================
--- head/sys/kern/syscalls.master Tue Apr 14 16:56:57 2020 (r359929)
+++ head/sys/kern/syscalls.master Tue Apr 14 18:07:42 2020 (r359930)
@@ -2776,7 +2776,7 @@
int jid
);
}
-509 AUE_CLOSEFROM STD {
+509 AUE_CLOSEFROM COMPAT12 {
int closefrom(
int lowfd
);
Modified: head/tools/build/depend-cleanup.sh
==============================================================================
--- head/tools/build/depend-cleanup.sh Tue Apr 14 16:56:57 2020 (r359929)
+++ head/tools/build/depend-cleanup.sh Tue Apr 14 18:07:42 2020 (r359930)
@@ -36,3 +36,5 @@ clean_dep()
clean_dep lib/libc shm_open S
# 20200310 r358851 rename of openmp's ittnotify_static.c to .cpp
clean_dep lib/libomp ittnotify_static c
+# 20200414 r359930 closefrom
+clean_dep lib/libc closefrom S
More information about the svn-src-head
mailing list