change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/Documentation/process/adding-syscalls.rst
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+.. _addsyscalls:
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4
 Adding a New System Call
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 ========================
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        to a somewhat opaque API.
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  - If you're just exposing runtime system information, a new node in sysfs
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-   (see ``Documentation/filesystems/sysfs.txt``) or the ``/proc`` filesystem may
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+   (see ``Documentation/filesystems/sysfs.rst``) or the ``/proc`` filesystem may
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    be more appropriate.  However, access to these mechanisms requires that the
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    relevant filesystem is mounted, which might not always be the case (e.g.
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    in a namespaced/sandboxed/chrooted environment).  Avoid adding any API to
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    by the option.
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  - Make the option depend on EXPERT if it should be hidden from normal users.
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  - Make any new source files implementing the function dependent on the CONFIG
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-   option in the Makefile (e.g. ``obj-$(CONFIG_XYZZY_SYSCALL) += xyzzy.c``).
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+   option in the Makefile (e.g. ``obj-$(CONFIG_XYZZY_SYSCALL) += xyzzy.o``).
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  - Double check that the kernel still builds with the new CONFIG option turned
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    off.
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    :manpage:`syscall(2)` man-page:
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    http://man7.org/linux/man-pages/man2/syscall.2.html#NOTES
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  - Collated emails from Linus Torvalds discussing the problems with ``ioctl()``:
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-   http://yarchive.net/comp/linux/ioctl.html
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+   https://yarchive.net/comp/linux/ioctl.html
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  - "How to not invent kernel interfaces", Arnd Bergmann,
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-   http://www.ukuug.org/events/linux2007/2007/papers/Bergmann.pdf
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+   https://www.ukuug.org/events/linux2007/2007/papers/Bergmann.pdf
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  - LWN article from Michael Kerrisk on avoiding new uses of CAP_SYS_ADMIN:
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    https://lwn.net/Articles/486306/
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  - Recommendation from Andrew Morton that all related information for a new