71e70c25c0
This API change led to unexpected consequences with Go runtime. The
Go runtime emulates blocking sockets over non-blocking sockets and
for that uses available event dispatcher on the target OS, which is
kevent(2) if availabe, with OS independent layer on top. It expects
that if whatever O_NONBLOCK socket returned ever EAGAIN, then it is
supposed to be reported as writable by the event dispatcher. kevent(2)
would never report a unix/dgram socket, since they never change their
state, they always are writeable. The expectations of Go are not
literally specified by SUS, however they are in its spirit. The SUS
specifies EAGAIN for send(2) as "The socket's file descriptor is marked
O_NONBLOCK and the requested operation would block" [1]. This doesn't
apply to FreeBSD unix/dgram socket, it never blocks on send(2).
Thus, changing API trying to mimic Linux was a mistake. But what about
the problem we tried to fix? Discussed that with Max Dounin of nginx,
and we agreed that the log bomb described shall be fixed on nginx side,
and it actually isn't specific to FreeBSD, may happen with nginx on any
non-Linux system with a certain configuration.
[1] https://pubs.opengroup.org/onlinepubs/9699919799/functions/send.html
This reverts commit
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.cirrus-ci | ||
.github | ||
bin | ||
cddl | ||
contrib | ||
crypto | ||
etc | ||
gnu | ||
include | ||
kerberos5 | ||
lib | ||
libexec | ||
release | ||
rescue | ||
sbin | ||
secure | ||
share | ||
stand | ||
sys | ||
targets | ||
tests | ||
tools | ||
usr.bin | ||
usr.sbin | ||
.arcconfig | ||
.arclint | ||
.cirrus.yml | ||
.clang-format | ||
.git-blame-ignore-revs | ||
.gitattributes | ||
.gitignore | ||
COPYRIGHT | ||
LOCKS | ||
MAINTAINERS | ||
Makefile | ||
Makefile.inc1 | ||
Makefile.libcompat | ||
Makefile.sys.inc | ||
ObsoleteFiles.inc | ||
README.md | ||
RELNOTES | ||
UPDATING |
FreeBSD Source:
This is the top level of the FreeBSD source directory.
FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.
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Directory | Description |
---|---|
bin | System/user commands. |
cddl | Various commands and libraries under the Common Development and Distribution License. |
contrib | Packages contributed by 3rd parties. |
crypto | Cryptography stuff (see crypto/README). |
etc | Template files for /etc. |
gnu | Commands and libraries under the GNU General Public License (GPL) or Lesser General Public License (LGPL). Please see gnu/COPYING and gnu/COPYING.LIB for more information. |
include | System include files. |
kerberos5 | Kerberos5 (Heimdal) package. |
lib | System libraries. |
libexec | System daemons. |
release | Release building Makefile & associated tools. |
rescue | Build system for statically linked /rescue utilities. |
sbin | System commands. |
secure | Cryptographic libraries and commands. |
share | Shared resources. |
stand | Boot loader sources. |
sys | Kernel sources (see sys/README.md). |
targets | Support for experimental DIRDEPS_BUILD |
tests | Regression tests which can be run by Kyua. See tests/README for additional information. |
tools | Utilities for regression testing and miscellaneous tasks. |
usr.bin | User commands. |
usr.sbin | System administration commands. |
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