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authorPiter PUNK <piterpunk@slackware.com>2009-12-15 16:28:52 +0100
committerKay Sievers <kay.sievers@vrfy.org>2009-12-15 16:28:52 +0100
commit6fb1b637d4fc9e94d0c492d8a3049f30db88dd54 (patch)
tree6bb2686447b9fa658b148f4c9156cae5f732d19e /extras
parentcaf87866a764f3078d8de4ca8dc97385505c910b (diff)
firmware: convert shell script to C
Diffstat (limited to 'extras')
-rw-r--r--extras/firmware/.gitignore1
-rw-r--r--extras/firmware/50-firmware.rules2
-rw-r--r--extras/firmware/firmware.c195
-rwxr-xr-xextras/firmware/firmware.sh29
4 files changed, 197 insertions, 30 deletions
diff --git a/extras/firmware/.gitignore b/extras/firmware/.gitignore
new file mode 100644
index 0000000000..2b8800bd46
--- /dev/null
+++ b/extras/firmware/.gitignore
@@ -0,0 +1 @@
+firmware
diff --git a/extras/firmware/50-firmware.rules b/extras/firmware/50-firmware.rules
index a28e2a875d..a193adbced 100644
--- a/extras/firmware/50-firmware.rules
+++ b/extras/firmware/50-firmware.rules
@@ -1,4 +1,4 @@
# do not edit this file, it will be overwritten on update
# firmware-class requests, copies files into the kernel
-SUBSYSTEM=="firmware", ACTION=="add", RUN+="firmware.sh"
+SUBSYSTEM=="firmware", ACTION=="add", RUN+="firmware --firmware=$env{FIRMWARE} --devpath=$env{DEVPATH}"
diff --git a/extras/firmware/firmware.c b/extras/firmware/firmware.c
new file mode 100644
index 0000000000..8f70be42ac
--- /dev/null
+++ b/extras/firmware/firmware.c
@@ -0,0 +1,195 @@
+/*
+ * firmware - Load firmware device
+ *
+ * Copyright (C) 2009 Piter Punk <piterpunk@slackware.com>
+ * Copyright (C) 2009 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * 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 <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <getopt.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <sys/utsname.h>
+#include <sys/stat.h>
+#include "libudev-private.h"
+
+static bool set_loading(struct udev *udev, char *loadpath, const char *state)
+{
+ FILE *ldfile;
+
+ ldfile = fopen(loadpath, "w");
+ if (ldfile == NULL) {
+ err(udev, "error: can not open '%s'\n", 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, *ftarget;
+ bool ret = false;
+
+ buf = malloc(size);
+ if (buf == NULL) {
+ err(udev,"No memory available to load firmware file");
+ return false;
+ }
+
+ fsource = fopen(source, "r");
+ if (fsource == NULL)
+ goto exit;
+ ftarget = fopen(target, "w");
+ if (ftarget == NULL)
+ goto exit;
+ if (fread(buf, size, 1, fsource) != 1)
+ goto exit;
+ if (fwrite(buf, size, 1, ftarget) == 1)
+ ret = true;
+exit:
+ fclose(ftarget);
+ fclose(fsource);
+ free(buf);
+ return ret;
+}
+
+int main(int argc, char **argv)
+{
+ static const struct option options[] = {
+ { "firmware", required_argument, NULL, 'f' },
+ { "devpath", required_argument, NULL, 'p' },
+ { "help", no_argument, NULL, 'h' },
+ {}
+ };
+ static const char *searchpath[] = {
+ "/lib/firmware/updates/",
+ "/lib/firmware/"
+ };
+ char fwencpath[UTIL_PATH_SIZE];
+ char misspath[UTIL_PATH_SIZE];
+ char loadpath[UTIL_PATH_SIZE];
+ char datapath[UTIL_PATH_SIZE];
+ char fwpath[UTIL_PATH_SIZE];
+ char *devpath = NULL;
+ char *firmware = NULL;
+ FILE *fwfile;
+ struct utsname kernel;
+ struct stat statbuf;
+ struct udev *udev = NULL;
+ unsigned int i;
+ int rc = 0;
+
+ udev_log_init("firmware");
+
+ for (;;) {
+ int option;
+
+ option = getopt_long(argc, argv, "f:p:h", options, NULL);
+ if (option == -1)
+ break;
+
+ switch (option) {
+ case 'f':
+ firmware = optarg;
+ break;
+ case 'p':
+ devpath = optarg;
+ break;
+ case 'h':
+ printf("Usage: firmware --firmware=<fwfile> --devpath=<path> [--help]\n\n");
+ default:
+ rc = 1;
+ goto exit;
+ }
+ }
+
+ if (devpath == NULL || firmware == NULL) {
+ fprintf(stderr, "firmware or devpath parameter missing\n\n");
+ rc = 1;
+ goto exit;
+ }
+
+ udev = udev_new();
+ if (udev == NULL) {
+ rc = 1;
+ goto exit;
+ };
+
+ /* lookup firmware file */
+ uname(&kernel);
+ for (i = 0; i < ARRAY_SIZE(searchpath); i++) {
+ util_strscpyl(fwpath, sizeof(fwpath), searchpath[i], kernel.release, "/", firmware, NULL);
+ dbg(udev, "trying %s\n", fwpath);
+ fwfile = fopen(fwpath, "r");
+ if (fwfile != NULL)
+ break;
+
+ util_strscpyl(fwpath, sizeof(fwpath), searchpath[i], firmware, NULL);
+ dbg(udev, "trying %s\n", fwpath);
+ fwfile = fopen(fwpath, "r");
+ if (fwfile != NULL)
+ break;
+ }
+
+ util_path_encode(firmware, fwencpath, sizeof(fwencpath));
+ util_strscpyl(misspath, sizeof(misspath), udev_get_dev_path(udev), "/.udev/firmware-missing/", fwencpath, NULL);
+
+ if (fwfile == NULL) {
+ int err;
+
+ /* This link indicates the missing firmware file and the associated device */
+ info(udev, "did not find firmware file '%s'\n", firmware);
+ do {
+ err = util_create_path(udev, misspath);
+ if (err != 0 && err != -ENOENT)
+ break;
+ udev_selinux_setfscreatecon(udev, misspath, S_IFLNK);
+ err = symlink(devpath, misspath);
+ if (err != 0)
+ err = -errno;
+ udev_selinux_resetfscreatecon(udev);
+ } while (err == -ENOENT);
+ rc = 2;
+ goto exit;
+ }
+
+ if (stat(fwpath, &statbuf) < 0 || statbuf.st_size == 0) {
+ rc = 3;
+ goto exit;
+ }
+ if (unlink(misspath) == 0)
+ util_delete_path(udev, misspath);
+
+ util_strscpyl(loadpath, sizeof(loadpath), udev_get_sys_path(udev), devpath, "/loading", NULL);
+ set_loading(udev, loadpath, "1");
+
+ util_strscpyl(datapath, sizeof(datapath), udev_get_sys_path(udev), devpath, "/data", NULL);
+ if (!copy_firmware(udev, fwpath, datapath, statbuf.st_size)) {
+ err(udev, "error sending firmware '%s' to device\n", firmware);
+ set_loading(udev, loadpath, "-1");
+ rc = 4;
+ goto exit;
+ };
+
+ set_loading(udev, loadpath, "0");
+exit:
+ udev_unref(udev);
+ udev_log_close();
+ return rc;
+}
diff --git a/extras/firmware/firmware.sh b/extras/firmware/firmware.sh
deleted file mode 100755
index 9d4659a34d..0000000000
--- a/extras/firmware/firmware.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/bin/sh -e
-
-FIRMWARE_DIRS="/lib/firmware/updates/$(uname -r) /lib/firmware/updates \
- /lib/firmware/$(uname -r) /lib/firmware"
-
-err() {
- echo "$@" >&2
- logger -t "${0##*/}[$$]" "$@" 2>/dev/null || true
-}
-
-if [ ! -e /sys$DEVPATH/loading ]; then
- err "udev firmware loader misses sysfs directory"
- exit 1
-fi
-
-for DIR in $FIRMWARE_DIRS; do
- [ -e "$DIR/$FIRMWARE" ] || continue
- echo 1 > /sys$DEVPATH/loading
- cat "$DIR/$FIRMWARE" > /sys$DEVPATH/data
- echo 0 > /sys$DEVPATH/loading
- exit 0
-done
-
-echo -1 > /sys$DEVPATH/loading
-err "Cannot find firmware file '$FIRMWARE'"
-mkdir -p /dev/.udev/firmware-missing
-file=$(echo "$FIRMWARE" | sed 's:/:\\x2f:g')
-ln -s -f "$DEVPATH" /dev/.udev/firmware-missing/$file
-exit 1