diff options
Diffstat (limited to 'wait_for_sysfs.c')
| -rw-r--r-- | wait_for_sysfs.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/wait_for_sysfs.c b/wait_for_sysfs.c deleted file mode 100644 index 84a25adb97..0000000000 --- a/wait_for_sysfs.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * wait_for_sysfs.c - small program to delay the execution - * of /etc/hotplug.d/ programs, until sysfs - * is fully populated by the kernel. Depending on - * the type of device, we wait for all expected - * directories and then just exit. - * - * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> - * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com> - * - * 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 version 2 of the License. - * - * 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. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include <stdio.h> -#include <stddef.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <ctype.h> -#include <errno.h> -#include <sys/stat.h> - -#include "libsysfs/sysfs/libsysfs.h" -#include "udev_lib.h" -#include "udev_version.h" -#include "udev_sysfs.h" -#include "logging.h" - -#ifdef LOG -unsigned char logname[LOGNAME_SIZE]; -void log_message(int level, const char *format, ...) -{ - va_list args; - - va_start(args, format); - vsyslog(level, format, args); - va_end(args); -} -#endif - -int main(int argc, char *argv[], char *envp[]) -{ - const char *devpath = ""; - const char *action; - const char *subsystem; - char sysfs_mnt_path[SYSFS_PATH_MAX]; - char filename[SYSFS_PATH_MAX]; - struct sysfs_class_device *class_dev; - struct sysfs_device *devices_dev; - int rc = 0; - const char *error = NULL; - - logging_init("wait_for_sysfs"); - - if (argc != 2) { - dbg("error: subsystem"); - return 1; - } - subsystem = argv[1]; - - devpath = getenv ("DEVPATH"); - if (!devpath) { - dbg("error: no DEVPATH"); - rc = 1; - goto exit; - } - - action = getenv ("ACTION"); - if (!action) { - dbg("error: no ACTION"); - rc = 1; - goto exit; - } - - /* we only wait on an add event */ - if (strcmp(action, "add") != 0) { - dbg("no add ACTION"); - goto exit; - } - - if (sysfs_get_mnt_path(sysfs_mnt_path, SYSFS_PATH_MAX) != 0) { - dbg("error: no sysfs path"); - rc = 2; - goto exit; - } - - if ((strncmp(devpath, "/block/", 7) == 0) || (strncmp(devpath, "/class/", 7) == 0)) { - snprintf(filename, SYSFS_PATH_MAX, "%s%s", sysfs_mnt_path, devpath); - filename[SYSFS_PATH_MAX-1] = '\0'; - - /* skip bad events where we get no device for the class */ - if (strncmp(devpath, "/class/", 7) == 0 && strchr(&devpath[7], '/') == NULL) { - dbg("no device name for '%s', bad event", devpath); - goto exit; - } - - /* open the class device we are called for */ - class_dev = wait_class_device_open(filename); - if (!class_dev) { - dbg("error: class device unavailable (probably remove has beaten us)"); - goto exit; - } - dbg("class device opened '%s'", filename); - - /* wait for the class device with possible physical device and bus */ - wait_for_class_device(class_dev, &error); - - /* - * we got too many unfixable class/net errors, kernel later than 2.6.10-rc1 will - * solve this by exporting the needed information with the hotplug event - * until we use this just don't print any error for net devices, but still - * wait for it. - */ - if (strncmp(devpath, "/class/net/", 11) == 0) - error = NULL; - - sysfs_close_class_device(class_dev); - - } else if ((strncmp(devpath, "/devices/", 9) == 0)) { - snprintf(filename, SYSFS_PATH_MAX, "%s%s", sysfs_mnt_path, devpath); - filename[SYSFS_PATH_MAX-1] = '\0'; - - /* open the path we are called for */ - devices_dev = wait_devices_device_open(filename); - if (!devices_dev) { - dbg("error: devices device unavailable (probably remove has beaten us)"); - goto exit; - } - dbg("devices device opened '%s'", filename); - - /* wait for the devices device */ - wait_for_devices_device(devices_dev, &error); - - sysfs_close_device(devices_dev); - - } else { - dbg("unhandled sysfs path, no need to wait"); - } - -exit: - if (error) { - info("either wait_for_sysfs (udev %s) needs an update to handle the device '%s' " - "properly (%s) or the sysfs-support of your device's driver needs to be fixed, " - "please report to <linux-hotplug-devel@lists.sourceforge.net>", - UDEV_VERSION, devpath, error); - rc =3; - } else { - dbg("result: waiting for sysfs successful '%s'", devpath); - } - - logging_close(); - exit(rc); -} |