From be2ea723b1d023b3d385d3b791ee4607cbfb20ca Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Sat, 30 Aug 2014 11:34:20 +0200 Subject: [PATCH] udev: remove userspace firmware loading support --- Makefile.am | 12 --- README | 9 +-- TODO | 1 - configure.ac | 20 ----- src/udev/udev-builtin-firmware.c | 154 --------------------------------------- src/udev/udev-builtin.c | 3 - src/udev/udev.h | 6 -- src/udev/udevd.c | 13 ---- Index: systemd-210/configure.ac =================================================================== --- systemd-210.orig/configure.ac +++ systemd-210/configure.ac @@ -902,25 +902,6 @@ if test "x$have_myhostname" != "xno"; th fi # ------------------------------------------------------------------------------ -AC_ARG_WITH(firmware-path, - AS_HELP_STRING([--with-firmware-path=DIR[[[:DIR[...]]]]], - [Firmware search path (default="")]), - [], [with_firmware_path=""]) -OLD_IFS=$IFS -IFS=: -for i in $with_firmware_path; do - if test "x${FIRMWARE_PATH}" = "x"; then - FIRMWARE_PATH="\\\"${i}/\\\"" - else - FIRMWARE_PATH="${FIRMWARE_PATH}, \\\"${i}/\\\"" - fi -done -IFS=$OLD_IFS -AC_SUBST(FIRMWARE_PATH) -AS_IF([test "x${FIRMWARE_PATH}" != "x"], [ AC_DEFINE(HAVE_FIRMWARE, 1, [Define if FIRMWARE is available]) ]) -AM_CONDITIONAL(ENABLE_FIRMWARE, [test "x${FIRMWARE_PATH}" != "x"]) - -# ------------------------------------------------------------------------------ AC_ARG_ENABLE([gudev], AS_HELP_STRING([--disable-gudev], [disable Gobject libudev support @<:@default=enabled@:>@]), [], [enable_gudev=yes]) @@ -1137,7 +1118,6 @@ AC_MSG_RESULT([ Build Python: ${PYTHON} Installation Python: ${PYTHON_BINARY} sphinx binary: ${SPHINX_BUILD} - firmware path: ${FIRMWARE_PATH} PAM modules dir: ${with_pamlibdir} PAM configuration dir: ${with_pamconfdir} D-Bus policy dir: ${with_dbuspolicydir} Index: systemd-210/Makefile.am =================================================================== --- systemd-210.orig/Makefile.am +++ systemd-210/Makefile.am @@ -2677,18 +2677,6 @@ libudev_core_la_LIBADD = \ $(BLKID_LIBS) \ $(KMOD_LIBS) -libudev_core_la_CPPFLAGS = \ - $(AM_CPPFLAGS) \ - -DFIRMWARE_PATH="$(FIRMWARE_PATH)" - -if ENABLE_FIRMWARE -libudev_core_la_SOURCES += \ - src/udev/udev-builtin-firmware.c - -dist_udevrules_DATA += \ - rules/50-firmware.rules -endif - if HAVE_KMOD libudev_core_la_SOURCES += \ src/udev/udev-builtin-kmod.c Index: systemd-210/README =================================================================== --- systemd-210.orig/README +++ systemd-210/README @@ -51,14 +51,14 @@ REQUIREMENTS: Linux kernel >= 3.8 for Smack support - Udev will fail to work with the legacy layout: + Udev will fail to work with the legacy sysfs layout: CONFIG_SYSFS_DEPRECATED=n Legacy hotplug slows down the system and confuses udev: CONFIG_UEVENT_HELPER_PATH="" - Userspace firmware loading is deprecated, will go away, and - sometimes causes problems: + Userspace firmware loading is not supported and should + be disabled in the kernel CONFIG_FW_LOADER_USER_HELPER=n Some udev rules and virtualization detection relies on it: Index: systemd-210/src/udev/udev-builtin.c =================================================================== --- systemd-210.orig/src/udev/udev-builtin.c +++ systemd-210/src/udev/udev-builtin.c @@ -34,9 +34,6 @@ static const struct udev_builtin *builti [UDEV_BUILTIN_BLKID] = &udev_builtin_blkid, #endif [UDEV_BUILTIN_BTRFS] = &udev_builtin_btrfs, -#ifdef HAVE_FIRMWARE - [UDEV_BUILTIN_FIRMWARE] = &udev_builtin_firmware, -#endif [UDEV_BUILTIN_HWDB] = &udev_builtin_hwdb, [UDEV_BUILTIN_INPUT_ID] = &udev_builtin_input_id, [UDEV_BUILTIN_KEYBOARD] = &udev_builtin_keyboard, Index: systemd-210/src/udev/udev-builtin-firmware.c =================================================================== --- systemd-210.orig/src/udev/udev-builtin-firmware.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * firmware - Kernel firmware loader - * - * Copyright (C) 2009 Piter Punk - * Copyright (C) 2009-2011 Kay Sievers - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details:* - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "udev.h" - -static bool set_loading(struct udev *udev, char *loadpath, const char *state) -{ - FILE *ldfile; - - ldfile = fopen(loadpath, "we"); - if (ldfile == NULL) { - log_error("error: can not open '%s'", loadpath); - return false; - }; - fprintf(ldfile, "%s\n", state); - fclose(ldfile); - return true; -} - -static bool copy_firmware(struct udev *udev, const char *source, const char *target, size_t size) -{ - char *buf; - FILE *fsource = NULL, *ftarget = NULL; - bool ret = false; - - buf = malloc(size); - if (buf == NULL) { - log_error("No memory available to load firmware file"); - return false; - } - - log_debug("writing '%s' (%zi) to '%s'", source, size, target); - - fsource = fopen(source, "re"); - if (fsource == NULL) - goto exit; - ftarget = fopen(target, "we"); - if (ftarget == NULL) - goto exit; - if (fread(buf, size, 1, fsource) != 1) - goto exit; - if (fwrite(buf, size, 1, ftarget) == 1) - ret = true; -exit: - if (ftarget != NULL) - fclose(ftarget); - if (fsource != NULL) - fclose(fsource); - free(buf); - return ret; -} - -static int builtin_firmware(struct udev_device *dev, int argc, char *argv[], bool test) -{ - struct udev *udev = udev_device_get_udev(dev); - static const char *searchpath[] = { FIRMWARE_PATH }; - char loadpath[UTIL_PATH_SIZE]; - char datapath[UTIL_PATH_SIZE]; - char fwpath[UTIL_PATH_SIZE]; - const char *firmware; - FILE *fwfile = NULL; - struct utsname kernel; - struct stat statbuf; - unsigned int i; - int rc = EXIT_SUCCESS; - - firmware = udev_device_get_property_value(dev, "FIRMWARE"); - if (firmware == NULL) { - log_error("firmware parameter missing"); - rc = EXIT_FAILURE; - goto exit; - } - - /* lookup firmware file */ - uname(&kernel); - for (i = 0; i < ELEMENTSOF(searchpath); i++) { - strscpyl(fwpath, sizeof(fwpath), searchpath[i], kernel.release, "/", firmware, NULL); - fwfile = fopen(fwpath, "re"); - if (fwfile != NULL) - break; - - strscpyl(fwpath, sizeof(fwpath), searchpath[i], firmware, NULL); - fwfile = fopen(fwpath, "re"); - if (fwfile != NULL) - break; - } - - strscpyl(loadpath, sizeof(loadpath), udev_device_get_syspath(dev), "/loading", NULL); - - if (fwfile == NULL) { - log_debug("did not find firmware file '%s'", firmware); - rc = EXIT_FAILURE; - /* - * Do not cancel the request in the initrd, the real root might have - * the firmware file and the 'coldplug' run in the real root will find - * this pending request and fulfill or cancel it. - * */ - if (!in_initrd()) - set_loading(udev, loadpath, "-1"); - goto exit; - } - - if (stat(fwpath, &statbuf) < 0 || statbuf.st_size == 0) { - if (!in_initrd()) - set_loading(udev, loadpath, "-1"); - rc = EXIT_FAILURE; - goto exit; - } - - if (!set_loading(udev, loadpath, "1")) - goto exit; - - strscpyl(datapath, sizeof(datapath), udev_device_get_syspath(dev), "/data", NULL); - if (!copy_firmware(udev, fwpath, datapath, statbuf.st_size)) { - log_error("error sending firmware '%s' to device", firmware); - set_loading(udev, loadpath, "-1"); - rc = EXIT_FAILURE; - goto exit; - }; - - set_loading(udev, loadpath, "0"); -exit: - if (fwfile) - fclose(fwfile); - return rc; -} - -const struct udev_builtin udev_builtin_firmware = { - .name = "firmware", - .cmd = builtin_firmware, - .help = "kernel firmware loader", - .run_once = true, -}; Index: systemd-210/src/udev/udevd.c =================================================================== --- systemd-210.orig/src/udev/udevd.c +++ systemd-210/src/udev/udevd.c @@ -100,9 +100,6 @@ struct event { dev_t devnum; int ifindex; bool is_block; -#ifdef HAVE_FIRMWARE - bool nodelay; -#endif }; static inline struct event *node_to_event(struct udev_list_node *node) @@ -474,10 +471,6 @@ static int event_queue_insert(struct ude event->devnum = udev_device_get_devnum(dev); event->is_block = streq("block", udev_device_get_subsystem(dev)); event->ifindex = udev_device_get_ifindex(dev); -#ifdef HAVE_FIRMWARE - if (streq(udev_device_get_subsystem(dev), "firmware")) - event->nodelay = true; -#endif udev_queue_export_device_queued(udev_queue_export, dev); log_debug("seq %llu queued, '%s' '%s'", udev_device_get_seqnum(dev), @@ -557,12 +550,6 @@ static bool is_devpath_busy(struct event return true; } -#ifdef HAVE_FIRMWARE - /* allow to bypass the dependency tracking */ - if (event->nodelay) - continue; -#endif - /* parent device event found */ if (event->devpath[common] == '/') { event->delaying_seqnum = loop_event->seqnum; Index: systemd-210/src/udev/udev.h =================================================================== --- systemd-210.orig/src/udev/udev.h +++ systemd-210/src/udev/udev.h @@ -141,9 +141,6 @@ enum udev_builtin_cmd { UDEV_BUILTIN_BLKID, #endif UDEV_BUILTIN_BTRFS, -#ifdef HAVE_FIRMWARE - UDEV_BUILTIN_FIRMWARE, -#endif UDEV_BUILTIN_HWDB, UDEV_BUILTIN_INPUT_ID, UDEV_BUILTIN_KEYBOARD, @@ -172,9 +169,6 @@ struct udev_builtin { extern const struct udev_builtin udev_builtin_blkid; #endif extern const struct udev_builtin udev_builtin_btrfs; -#ifdef HAVE_FIRMWARE -extern const struct udev_builtin udev_builtin_firmware; -#endif extern const struct udev_builtin udev_builtin_hwdb; extern const struct udev_builtin udev_builtin_input_id; extern const struct udev_builtin udev_builtin_keyboard; Index: systemd-210/TODO =================================================================== --- systemd-210.orig/TODO +++ systemd-210/TODO @@ -541,7 +541,6 @@ Features: * ExecOnFailure=/usr/bin/foo * udev: - - remove src/udev/udev-builtin-firmware.c (CONFIG_FW_LOADER_USER_HELPER=n) - move to LGPL - kill scsi_id - add trigger --subsystem-match=usb/usb_device device