Generate modules.builtin.alias from match ids This patch series (v8) generates `modules.builtin.alias` during modpost. The goal is for tools like USBGuard to leverage not only modules.aliases but also `modules.builtin.aliases` to associate devices with the modules that may be bound before deciding to authorize a device or not. This is particularly useful in cases when new devices of a particular type shouldn't be allowed part of the time like for lock screens. Also included in this series are style fixes and fixes for build breakages for built-in modules that relied on MODULE_DEVICE_TABLE being a no-op. Some of these were typos in the device table name and one ifdef-ed out the device table. -- # Generate modules.builtin.alias from match ids This series (v7) has incremental improvements over the previous series. One big positive of this patch series is it makes it harder for bugs in kernel modules related to MODULE_DEVICE_TABLE to hide when a module is only ever tested as a built-in module. This is demonstrated by all the required fixes at the beginning of the series. Note, cover letters were first added in v5. RFC (broken patch): https://lore.kernel.org/lkml/CAJzde042-M4UbpNYKw0eDVg4JqYmwmPYSsmgK+kCMTqsi+-2Yw@xxxxxxxxxxxxxx/ v1 (missing v1 label): https://lore.kernel.org/lkml/20221111152852.2837363-1-allenwebb@xxxxxxxxxx/ v2 (missing v2 label): https://lore.kernel.org/lkml/20221128201332.3482092-1-allenwebb@xxxxxxxxxx/ v3: https://lore.kernel.org/lkml/20221129224313.455862-1-allenwebb@xxxxxxxxxx/ v4: https://lore.kernel.org/lkml/20221130221447.1202206-1-allenwebb@xxxxxxxxxx/ v5: https://lore.kernel.org/lkml/20221201211630.101541-1-allenwebb@xxxxxxxxxx/ v6: https://lore.kernel.org/lkml/20221202224540.1446952-1-allenwebb@xxxxxxxxxx/ v7: https://lore.kernel.org/lkml/20221216221703.294683-1-allenwebb@xxxxxxxxxx/ v8: This version ## Patch series status 123456789012345678901234567890123456789012345678901234567890123456789012 This series is still going through revisions in response to comments. I believe there is potential to improve the Makefile part of the patch series as well as an open question of whether modpost should generate `modules.built.alias` directly or create a vmlinuz.mod.c containing the missing module info for the match-id based aliases for built-in modules. ## Acknowledgements Thanks to Greg Kroah-Hartman, Christophe Leroy, and the Linux maintainers for being patient with me as I have worked through learning the kernel workflow to get this series into a more presentable state. Thanks to Luis Chamberlain for raising the alternative of using kmod to address the primary motivation of the patch series. Also, thanks to Intel's kernel test robot <lkp@xxxxxxxxx> for catching issues that showed up on different kernel configurations. Allen Webb (9): imx: Fix typo rockchip-mailbox: Fix typo scsi/BusLogic: Always include device id table stmpe-spi: Fix typo module.h: MODULE_DEVICE_TABLE for built-in modules modpost: Track module name for built-in modules modpost: Add -b option for emitting built-in aliases file2alias.c: Implement builtin.alias generation build: Add modules.builtin.alias .gitignore | 1 + Makefile | 1 + drivers/mailbox/rockchip-mailbox.c | 2 +- drivers/mfd/stmpe-spi.c | 2 +- drivers/scsi/BusLogic.c | 2 - drivers/soc/imx/imx8mp-blk-ctrl.c | 2 +- include/linux/module.h | 15 ++++- scripts/Makefile.modpost | 17 +++++- scripts/mod/file2alias.c | 94 +++++++++++++++++++++++------- scripts/mod/modpost.c | 23 +++++++- scripts/mod/modpost.h | 2 + 11 files changed, 131 insertions(+), 30 deletions(-) -- 2.37.3
