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6b4756beb1
Justin Stitt says: ==================== ethtool: Add ethtool_puts() This series aims to implement ethtool_puts() and send out a wave 1 of conversions from ethtool_sprintf(). There's also a checkpatch patch included to check for the cases listed below. This was sparked from recent discussion here [1] The conversions are used in cases where ethtool_sprintf() was being used with just two arguments: | ethtool_sprintf(&data, buffer[i].name); or when it's used with format string: "%s" | ethtool_sprintf(&data, "%s", buffer[i].name); which both now become: | ethtool_puts(&data, buffer[i].name); The first case commonly triggers a -Wformat-security warning with Clang due to potential problems with format flags present in the strings [3]. The second is just a bit weird with a plain-ol' "%s". Changes found with Cocci [4] and grep [5]. [1]: https://lore.kernel.org/all/202310141935.B326C9E@keescook/ [2]: https://lore.kernel.org/all/?q=dfb%3Aethtool_sprintf+AND+f%3Ajustinstitt [3]: https://lore.kernel.org/all/202310101528.9496539BE@keescook/ [4]: (script authored by Kees w/ modifications from Joe) @replace_2_args@ expression BUF; expression VAR; @@ - ethtool_sprintf(BUF, VAR) + ethtool_puts(BUF, VAR) @replace_3_args@ expression BUF; expression VAR; @@ - ethtool_sprintf(BUF, "%s", VAR) + ethtool_puts(BUF, VAR) - ethtool_sprintf(&BUF, "%s", VAR) + ethtool_puts(&BUF, VAR) [5]: $ rg "ethtool_sprintf\(\s*[^,)]+\s*,\s*[^,)]+\s*\)" Signed-off-by: Justin Stitt <justinstitt@google.com> --- Changes in v5: - updated documentation to include info about the lack of a trailing newline (Thanks Russell) - rebased onto mainline - Link to v4: https://lore.kernel.org/r/20231102-ethtool_puts_impl-v4-0-14e1e9278496@google.com Changes in v4: - update documentation to match: https://lore.kernel.org/all/20231028192511.100001-1-andrew@lunn.ch/ - Link to v3: https://lore.kernel.org/r/20231027-ethtool_puts_impl-v3-0-3466ac679304@google.com Changes in v3: - fix force_speed_maps merge conflict + formatting (thanks Vladimir) - rebase onto net-next (thanks Andrew, Vladimir) - change subject (thanks Vladimir) - fix checkpatch formatting + implementation (thanks Joe) - Link to v2: https://lore.kernel.org/r/20231026-ethtool_puts_impl-v2-0-0d67cbdd0538@google.com Changes in v2: - wrap lines better in replacement (thanks Joe, Kees) - add --fix to checkpatch (thanks Joe) - clean up checkpatch formatting (thanks Joe, et al.) - rebase against next - Link to v1: https://lore.kernel.org/r/20231025-ethtool_puts_impl-v1-0-6a53a93d3b72@google.com ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.