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36f354ec7b
Most of the "store" functions that handle userspace input via sysfs return -EINVAL should the value fail validation and/or type conversion. This error code is a clear message to userspace that the value is not a valid input. However, some of the "show" functions return input parsing error codes as-is, which may be either -EINVAL or -ERANGE. The former would often be from kstrtobool(), and the latter typically from other kstr*() functions such as kstrtou8(), kstrtou32(), kstrtoint(), etc. -EINVAL is commonly returned as the error code to indicate that the value provided is invalid, but -ERANGE is not very useful in userspace. Therefore, normalize the return error code to be -EINVAL for when the validation and/or type conversion fails. Link: https://lore.kernel.org/r/20210915230127.2495723-2-kw@linux.com Signed-off-by: Krzysztof Wilczyński <kw@linux.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> |
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| certs | ||
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| Documentation | ||
| drivers | ||
| 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 | ||
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| 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.
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.