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35a196154f
so that the socket does not generate SIGPIPE, only EPIPE, when a write is attempted after socket shutdown. When the option was introduced in 2002, this required the logic for determining whether SIGPIPE was generated to be pushed down from dofilewrite() to the socket layer so that the socket options could be considered. However, the change in 2002 omitted modification to soo_write() required to add that logic, resulting in SIGPIPE not being generated even without SO_NOSIGPIPE when the socket was written to using write() or related generic system calls. This change adds the EPIPE logic to soo_write(), generating a SIGPIPE signal to the process associated with the passed uio in the event that the SO_NOSIGPIPE option is not set. Notes: - The are upsides and downsides to placing this logic in the socket layer as opposed to the file descriptor layer. This is really fd layer logic, but because we need so_options, we have a choice of layering violations and pick this one. - SIGPIPE possibly should be delivered to the thread performing the write, not the process performing the write. - uio->uio_td and the td argument to soo_write() might potentially differ; we use the thread in the uio argument. - The "sigpipe" regression test in src/tools/regression/sockets/sigpipe tests for the bug. Submitted by: Mikko Tyolajarvi <mbsd at pacbell dot net> Talked with: glebius, alfred PR: 78478 MFC after: 1 week |
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| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| README | ||
| UPDATING | ||
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel, the kernel-modules and the contents of /etc. The ``buildkernel'' and ``installkernel'' targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process, documentation for which can be found at: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html And in the config(8) man page. Note: If you want to build and install the kernel with the ``buildkernel'' and ``installkernel'' targets, you might need to build world before. More information is available in the handbook. The sample kernel configuration files reside in the sys/<arch>/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file NOTES contains entries and documentation for all possible devices, not just those commonly used. It is the successor of the ancient LINT file, but in contrast to LINT, it is not buildable as a kernel but a pure reference and documentation file. Source Roadmap: --------------- bin System/user commands. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberos5 Kerberos5 (Heimdal) package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html