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https://github.com/systemd/systemd
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firmware: convert shell script to C
This commit is contained in:
Piter PUNK
Kay Sievers
parent
caf87866a7
commit
6fb1b637d4
18
Makefile.am
18
Makefile.am
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@ -179,16 +179,10 @@ udev_test_udev_SOURCES = \
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udev/test-udev.c
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udev_test_udev_LDADD = libudev/libudev-private.la
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# ------------------------------------------------------------------------------
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# firmware.sh - firmware loading
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# ------------------------------------------------------------------------------
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dist_libexec_SCRIPTS = extras/firmware/firmware.sh
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dist_udevrules_DATA += extras/firmware/50-firmware.rules
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# ------------------------------------------------------------------------------
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# rule_generator - persistent network and optical device rule generator
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# ------------------------------------------------------------------------------
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dist_libexec_SCRIPTS += \
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dist_libexec_SCRIPTS = \
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extras/rule_generator/write_cd_rules \
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extras/rule_generator/write_net_rules
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@ -199,12 +193,20 @@ dist_udevrules_DATA += \
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extras/rule_generator/75-cd-aliases-generator.rules \
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extras/rule_generator/75-persistent-net-generator.rules
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# ------------------------------------------------------------------------------
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# firmware - firmware loading
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# ------------------------------------------------------------------------------
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extras_firmware_firmware_SOURCES = extras/firmware/firmware.c
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extras_firmware_firmware_LDADD = libudev/libudev-private.la
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dist_udevrules_DATA += extras/firmware/50-firmware.rules
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libexec_PROGRAMS = extras/firmware/firmware
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# ------------------------------------------------------------------------------
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# ata_id - ATA identify
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# ------------------------------------------------------------------------------
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extras_ata_id_ata_id_SOURCES = extras/ata_id/ata_id.c
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extras_ata_id_ata_id_LDADD = libudev/libudev-private.la
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libexec_PROGRAMS = extras/ata_id/ata_id
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libexec_PROGRAMS += extras/ata_id/ata_id
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# ------------------------------------------------------------------------------
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# cdrom_id - optical drive/media capability
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1
TODO
1
TODO
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@ -1,5 +1,4 @@
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o convert firmware.sh to C
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o get rid of "scan all devices to find myself" libusb interface
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if it can not be fixed, drop libusb entirely and add a simple
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wrapper around the Linux usb ioctls we need
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1
extras/firmware/.gitignore
vendored
Normal file
1
extras/firmware/.gitignore
vendored
Normal file
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@ -0,0 +1 @@
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firmware
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@ -1,4 +1,4 @@
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# do not edit this file, it will be overwritten on update
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# firmware-class requests, copies files into the kernel
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SUBSYSTEM=="firmware", ACTION=="add", RUN+="firmware.sh"
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SUBSYSTEM=="firmware", ACTION=="add", RUN+="firmware --firmware=$env{FIRMWARE} --devpath=$env{DEVPATH}"
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195
extras/firmware/firmware.c
Normal file
195
extras/firmware/firmware.c
Normal file
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@ -0,0 +1,195 @@
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/*
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* firmware - Load firmware device
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*
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* Copyright (C) 2009 Piter Punk <piterpunk@slackware.com>
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* Copyright (C) 2009 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details:*
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <getopt.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <sys/utsname.h>
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#include <sys/stat.h>
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#include "libudev-private.h"
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static bool set_loading(struct udev *udev, char *loadpath, const char *state)
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{
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FILE *ldfile;
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ldfile = fopen(loadpath, "w");
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if (ldfile == NULL) {
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err(udev, "error: can not open '%s'\n", loadpath);
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return false;
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};
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fprintf(ldfile, "%s\n", state);
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fclose(ldfile);
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return true;
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}
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static bool copy_firmware(struct udev *udev, const char *source, const char *target, size_t size)
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{
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char *buf;
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FILE *fsource, *ftarget;
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bool ret = false;
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buf = malloc(size);
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if (buf == NULL) {
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err(udev,"No memory available to load firmware file");
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return false;
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}
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fsource = fopen(source, "r");
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if (fsource == NULL)
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goto exit;
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ftarget = fopen(target, "w");
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if (ftarget == NULL)
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goto exit;
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if (fread(buf, size, 1, fsource) != 1)
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goto exit;
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if (fwrite(buf, size, 1, ftarget) == 1)
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ret = true;
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exit:
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fclose(ftarget);
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fclose(fsource);
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free(buf);
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return ret;
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}
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int main(int argc, char **argv)
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{
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static const struct option options[] = {
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{ "firmware", required_argument, NULL, 'f' },
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{ "devpath", required_argument, NULL, 'p' },
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{ "help", no_argument, NULL, 'h' },
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{}
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};
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static const char *searchpath[] = {
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"/lib/firmware/updates/",
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"/lib/firmware/"
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};
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char fwencpath[UTIL_PATH_SIZE];
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char misspath[UTIL_PATH_SIZE];
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char loadpath[UTIL_PATH_SIZE];
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char datapath[UTIL_PATH_SIZE];
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char fwpath[UTIL_PATH_SIZE];
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char *devpath = NULL;
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char *firmware = NULL;
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FILE *fwfile;
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struct utsname kernel;
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struct stat statbuf;
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struct udev *udev = NULL;
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unsigned int i;
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int rc = 0;
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udev_log_init("firmware");
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for (;;) {
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int option;
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option = getopt_long(argc, argv, "f:p:h", options, NULL);
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if (option == -1)
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break;
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switch (option) {
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case 'f':
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firmware = optarg;
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break;
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case 'p':
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devpath = optarg;
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break;
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case 'h':
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printf("Usage: firmware --firmware=<fwfile> --devpath=<path> [--help]\n\n");
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default:
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rc = 1;
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goto exit;
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}
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}
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if (devpath == NULL || firmware == NULL) {
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fprintf(stderr, "firmware or devpath parameter missing\n\n");
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rc = 1;
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goto exit;
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}
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udev = udev_new();
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if (udev == NULL) {
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rc = 1;
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goto exit;
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};
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/* lookup firmware file */
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uname(&kernel);
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for (i = 0; i < ARRAY_SIZE(searchpath); i++) {
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util_strscpyl(fwpath, sizeof(fwpath), searchpath[i], kernel.release, "/", firmware, NULL);
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dbg(udev, "trying %s\n", fwpath);
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fwfile = fopen(fwpath, "r");
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if (fwfile != NULL)
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break;
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util_strscpyl(fwpath, sizeof(fwpath), searchpath[i], firmware, NULL);
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dbg(udev, "trying %s\n", fwpath);
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fwfile = fopen(fwpath, "r");
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if (fwfile != NULL)
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break;
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}
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util_path_encode(firmware, fwencpath, sizeof(fwencpath));
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util_strscpyl(misspath, sizeof(misspath), udev_get_dev_path(udev), "/.udev/firmware-missing/", fwencpath, NULL);
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if (fwfile == NULL) {
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int err;
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/* This link indicates the missing firmware file and the associated device */
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info(udev, "did not find firmware file '%s'\n", firmware);
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do {
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err = util_create_path(udev, misspath);
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if (err != 0 && err != -ENOENT)
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break;
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udev_selinux_setfscreatecon(udev, misspath, S_IFLNK);
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err = symlink(devpath, misspath);
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if (err != 0)
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err = -errno;
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udev_selinux_resetfscreatecon(udev);
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} while (err == -ENOENT);
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rc = 2;
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goto exit;
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}
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if (stat(fwpath, &statbuf) < 0 || statbuf.st_size == 0) {
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rc = 3;
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goto exit;
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}
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if (unlink(misspath) == 0)
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util_delete_path(udev, misspath);
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util_strscpyl(loadpath, sizeof(loadpath), udev_get_sys_path(udev), devpath, "/loading", NULL);
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set_loading(udev, loadpath, "1");
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util_strscpyl(datapath, sizeof(datapath), udev_get_sys_path(udev), devpath, "/data", NULL);
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if (!copy_firmware(udev, fwpath, datapath, statbuf.st_size)) {
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err(udev, "error sending firmware '%s' to device\n", firmware);
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set_loading(udev, loadpath, "-1");
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rc = 4;
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goto exit;
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};
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set_loading(udev, loadpath, "0");
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exit:
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udev_unref(udev);
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udev_log_close();
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return rc;
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}
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@ -1,29 +0,0 @@
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#!/bin/sh -e
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FIRMWARE_DIRS="/lib/firmware/updates/$(uname -r) /lib/firmware/updates \
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/lib/firmware/$(uname -r) /lib/firmware"
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err() {
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echo "$@" >&2
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logger -t "${0##*/}[$$]" "$@" 2>/dev/null || true
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}
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if [ ! -e /sys$DEVPATH/loading ]; then
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err "udev firmware loader misses sysfs directory"
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exit 1
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fi
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for DIR in $FIRMWARE_DIRS; do
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[ -e "$DIR/$FIRMWARE" ] || continue
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echo 1 > /sys$DEVPATH/loading
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cat "$DIR/$FIRMWARE" > /sys$DEVPATH/data
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echo 0 > /sys$DEVPATH/loading
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exit 0
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done
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echo -1 > /sys$DEVPATH/loading
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err "Cannot find firmware file '$FIRMWARE'"
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mkdir -p /dev/.udev/firmware-missing
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file=$(echo "$FIRMWARE" | sed 's:/:\\x2f:g')
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ln -s -f "$DEVPATH" /dev/.udev/firmware-missing/$file
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exit 1
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