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A mirror of the official Linux kernel repository just in case
c999b933fa
Now that every instance of struct siginfo is now initialized it is no longer necessary to copy struct siginfo piece by piece to userspace but instead the entire structure can be copied. As well as making the code simpler and more efficient this means that copy_sinfo_to_user no longer cares which union member of struct siginfo is in use. In practice this means that all 32bit architectures that define FPE_FIXME will handle properly send SI_USER when kill(SIGFPE) is sent. While still performing their historic architectural brokenness when 0 is used a floating pointer signal. This matches the current behavior of 64bit architectures that define FPE_FIXME who get lucky and an overloaded SI_USER has continuted to work through copy_siginfo_to_user because the 8 byte si_addr occupies the same bytes in struct siginfo as the 4 byte si_pid and the 4 byte si_uid. Problematic architectures still need to fix their ABI so that signalfd and 32bit compat code will work properly. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> |
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| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.