diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | RELEASE-NOTES | 9 | ||||
| -rw-r--r-- | udev.c | 1 | ||||
| -rw-r--r-- | udev.h | 1 | ||||
| -rw-r--r-- | udev_add.c | 1 | ||||
| -rw-r--r-- | udev_device.c | 1 | ||||
| -rw-r--r-- | udev_event.c | 39 | ||||
| -rw-r--r-- | udev_rules.c | 5 | ||||
| -rw-r--r-- | udev_sysfs.c | 298 | ||||
| -rw-r--r-- | udev_sysfs.h | 40 | ||||
| -rw-r--r-- | udevstart.c | 1 | ||||
| -rw-r--r-- | udevtest.c | 1 |
12 files changed, 44 insertions, 355 deletions
@@ -61,7 +61,6 @@ HEADERS = \ udev_utils.h \ udev_rules.h \ udev_db.h \ - udev_sysfs.h \ logging.h \ udev_libc_wrapper.h \ udev_selinux.h \ @@ -73,7 +72,6 @@ UDEV_OBJS = \ udev_config.o \ udev_add.o \ udev_remove.o \ - udev_sysfs.o \ udev_db.o \ udev_rules.o \ udev_rules_parse.o \ diff --git a/RELEASE-NOTES b/RELEASE-NOTES index 80627038..18e2829b 100644 --- a/RELEASE-NOTES +++ b/RELEASE-NOTES @@ -1,3 +1,12 @@ +udev 076 +======== +All built-in logic to work around bad sysfs timing is removed with this +version. The need to wait for sysfs files is almost fixed with a kernel +version that doesn't work with this udev version anyway. Until we fix +the timing of the "bus" link creation, the former integrated logic should +be emulated by a rule placed before all other rules: + ACTION=="add", DEVPATH=="/devices/*", ENV{PHYSDEVBUS}=="?*", WAIT_FOR_SYSFS="bus" + udev 075 ======== Silent a too verbose error logging for the old hotplug.d/ dev.d/ @@ -34,7 +34,6 @@ #include "udev_libc_wrapper.h" #include "udev.h" #include "udev_utils.h" -#include "udev_sysfs.h" #include "udev_version.h" #include "udev_rules.h" #include "logging.h" @@ -84,6 +84,7 @@ struct udevice { extern int udev_init_device(struct udevice *udev, const char* devpath, const char *subsystem, const char *action); extern void udev_cleanup_device(struct udevice *udev); +extern dev_t get_devt(struct sysfs_class_device *class_dev); extern int udev_process_event(struct udev_rules *rules, struct udevice *udev); extern int udev_add_device(struct udevice *udev, struct sysfs_class_device *class_dev); extern int udev_remove_device(struct udevice *udev); @@ -37,7 +37,6 @@ #include "udev_libc_wrapper.h" #include "udev.h" #include "udev_utils.h" -#include "udev_sysfs.h" #include "udev_version.h" #include "logging.h" #include "udev_rules.h" diff --git a/udev_device.c b/udev_device.c index ad6f7063..7821c91c 100644 --- a/udev_device.c +++ b/udev_device.c @@ -37,7 +37,6 @@ #include "udev.h" #include "logging.h" #include "udev_utils.h" -#include "udev_sysfs.h" #include "list.h" diff --git a/udev_event.c b/udev_event.c index b50fbf4c..353aff09 100644 --- a/udev_event.c +++ b/udev_event.c @@ -28,38 +28,62 @@ #include <ctype.h> #include <dirent.h> #include <syslog.h> +#include <sys/stat.h> +#include "libsysfs/sysfs/libsysfs.h" #include "udev_libc_wrapper.h" #include "udev.h" #include "logging.h" #include "udev_rules.h" #include "udev_utils.h" -#include "udev_sysfs.h" #include "list.h" +dev_t get_devt(struct sysfs_class_device *class_dev) +{ + struct sysfs_attribute *attr = NULL; + unsigned int major, minor; + char *maj, *min; + + maj = getenv("MAJOR"); + min = getenv("MINOR"); + + if (maj && min) { + major = atoi(maj); + minor = atoi(min); + } else { + attr = sysfs_get_classdev_attr(class_dev, "dev"); + if (attr == NULL) + return 0; + dbg("dev='%s'", attr->value); + + if (sscanf(attr->value, "%u:%u", &major, &minor) != 2) + return 0; + } + + dbg("found major=%d, minor=%d", major, minor); + return makedev(major, minor); +} + int udev_process_event(struct udev_rules *rules, struct udevice *udev) { int retval; char path[PATH_SIZE]; - const char *error; if (udev->type == DEV_BLOCK || udev->type == DEV_CLASS || udev->type == DEV_NET) { /* handle device node */ if (strcmp(udev->action, "add") == 0) { struct sysfs_class_device *class_dev; - /* wait for sysfs of /sys/class /sys/block */ dbg("node add"); snprintf(path, sizeof(path), "%s%s", sysfs_path, udev->devpath); path[sizeof(path)-1] = '\0'; - class_dev = wait_class_device_open(path); + class_dev = sysfs_open_class_device_path(path); if (class_dev == NULL) { dbg("open class device failed"); return 0; } dbg("opened class_dev->name='%s'", class_dev->name); - wait_for_class_device(class_dev, &error); /* get major/minor */ if (udev->type == DEV_BLOCK || udev->type == DEV_CLASS) @@ -113,17 +137,16 @@ int udev_process_event(struct udev_rules *rules, struct udevice *udev) } else if (udev->type == DEV_DEVICE && strcmp(udev->action, "add") == 0) { struct sysfs_device *devices_dev; - /* wait for sysfs of /sys/devices/ */ dbg("devices add"); snprintf(path, sizeof(path), "%s%s", sysfs_path, udev->devpath); path[sizeof(path)-1] = '\0'; - devices_dev = wait_devices_device_open(path); + devices_dev = sysfs_open_device_path(path); if (!devices_dev) { dbg("devices device unavailable (probably remove has beaten us)"); return 0; } + dbg("devices device opened '%s'", path); - wait_for_devices_device(devices_dev, &error); udev_rules_get_run(rules, udev, NULL, devices_dev); sysfs_close_device(devices_dev); if (udev->ignore_device) { diff --git a/udev_rules.c b/udev_rules.c index 137ad27d..a3100f8e 100644 --- a/udev_rules.c +++ b/udev_rules.c @@ -376,7 +376,7 @@ attr_found: return 0; } -#define WAIT_LOOP_PER_SECOND 20 +#define WAIT_LOOP_PER_SECOND 50 static int wait_for_sysfs(struct udevice *udev, const char *file, int timeout) { char filename[PATH_SIZE]; @@ -392,9 +392,10 @@ static int wait_for_sysfs(struct udevice *udev, const char *file, int timeout) info("file appeared after %i loops", (timeout * WAIT_LOOP_PER_SECOND) - loop-1); return 0; } + info("wait for %i mseconds", 1000 / WAIT_LOOP_PER_SECOND); usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND); } - info("waiting for '%s' failed", filename); + err("waiting for '%s' failed", filename); return -1; } diff --git a/udev_sysfs.c b/udev_sysfs.c deleted file mode 100644 index 71aa827d..00000000 --- a/udev_sysfs.c +++ /dev/null @@ -1,298 +0,0 @@ -/* - * udev_sysfs.c - sysfs linux kernel specific knowledge - * - * 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_version.h" -#include "udev_sysfs.h" -#include "udev_utils.h" -#include "logging.h" - -/* list of subsystem specific files, NULL if there is no file to wait for */ -dev_t get_devt(struct sysfs_class_device *class_dev) -{ - struct sysfs_attribute *attr = NULL; - unsigned int major, minor; - - attr = sysfs_get_classdev_attr(class_dev, "dev"); - if (attr == NULL) - return 0; - dbg("dev='%s'", attr->value); - - if (sscanf(attr->value, "%u:%u", &major, &minor) != 2) - return 0; - dbg("found major=%d, minor=%d", major, minor); - - return makedev(major, minor); -} - -/* wait for a devices device specific file to show up */ -int wait_for_devices_device(struct sysfs_device *devices_dev, - const char **error) -{ - static const struct device_file { - const char *bus; - const char *file; - } device_files[] = { - { .bus = "scsi", .file = "vendor" }, - { .bus = "usb", .file = "idVendor" }, - { .bus = "usb", .file = "iInterface" }, - { .bus = "usb", .file = "bNumEndpoints" }, - { .bus = "usb-serial", .file = "bus" }, - { .bus = "ide", .file = "bus" }, - { .bus = "pci", .file = "vendor" }, - { .bus = "pci_express", .file = "bus" }, - { .bus = "platform", .file = "bus" }, - { .bus = "pcmcia", .file = "bus" }, - { .bus = "i2c", .file = "bus" }, - { .bus = "ieee1394", .file = "node_count" }, - { .bus = "ieee1394", .file = "nodeid" }, - { .bus = "ieee1394", .file = "address" }, - { .bus = "bttv-sub", .file = NULL }, - { .bus = "pnp", .file = "bus" }, - { .bus = "eisa", .file = "bus" }, - { .bus = "serio", .file = "bus" }, - { .bus = "pseudo", .file = "bus" }, - { .bus = "mmc", .file = "bus" }, - { .bus = "macio", .file = "bus" }, - { .bus = "of_platform", .file = "bus" }, - { .bus = "vio", .file = "bus" }, - { .bus = "ecard", .file = "bus" }, - { .bus = "sa1111-rab", .file = "bus" }, - { .bus = "amba", .file = "bus" }, - { .bus = "locomo-bus", .file = "bus" }, - { .bus = "logicmodule", .file = "bus" }, - { .bus = "parisc", .file = "bus" }, - { .bus = "ocp", .file = "bus" }, - { .bus = "dio", .file = "bus" }, - { .bus = "MCA", .file = "bus" }, - { .bus = "wl", .file = "bus" }, - { .bus = "ccwgroup", .file = "bus" }, - { .bus = "css", .file = "bus" }, - { .bus = "ccw", .file = "bus" }, - { .bus = "iucv", .file = "bus" }, - { NULL, NULL } - }; - const struct device_file *devicefile = NULL; - int loop; - - if (getenv("PHYSDEVBUS") == NULL) { - dbg("the kernel says, that there is no bus for '%s'", devices_dev->path); - return 0; - } - - /* wait for the bus device link to the devices device */ - loop = WAIT_MAX_SECONDS * WAIT_LOOP_PER_SECOND; - while (--loop) { - if (sysfs_get_device_bus(devices_dev) == 0) - break; - - usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND); - } - if (loop == 0) { - dbg("error: getting bus device link"); - if (error) - *error = "no bus device link"; - return -1; - } - dbg("bus device link found for bus '%s'", devices_dev->bus); - - /* wait for a bus device specific file to show up */ - loop = WAIT_MAX_SECONDS * WAIT_LOOP_PER_SECOND; - while (--loop) { - int found_bus_type = 0; - - for (devicefile = device_files; devicefile->bus != NULL; devicefile++) { - if (strcmp(devices_dev->bus, devicefile->bus) == 0) { - char filename[PATH_SIZE]; - struct stat stats; - - if (devicefile->file == NULL) { - dbg("bus '%s' has no file to wait for", devices_dev->bus); - return 0; - } - - found_bus_type = 1; - snprintf(filename, sizeof(filename), "%s/%s", devices_dev->path, devicefile->file); - filename[sizeof(filename)-1] = '\0'; - dbg("looking at bus '%s' device for specific file '%s'", devices_dev->bus, filename); - - if (stat(filename, &stats) == 0) { - dbg("bus '%s' device specific file '%s' found", devices_dev->bus, devicefile->file); - return 0; - } - } - } - if (found_bus_type == 0) { - if (error) - *error = "unknown bus"; - info("error: unknown bus, please report to " - "<linux-hotplug-devel@lists.sourceforge.net> '%s'", devices_dev->bus); - return -1; - } - usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND); - } - - dbg("error: getting '%s' device specific file '%s'", devices_dev->bus, devicefile->file); - if (error) - *error = "bus device specific file unavailable"; - return -1; -} - - -struct sysfs_class_device *wait_class_device_open(const char *path) -{ - struct sysfs_class_device *class_dev = NULL; - int loop; - - loop = WAIT_MAX_SECONDS * WAIT_LOOP_PER_SECOND; - while (--loop) { - class_dev = sysfs_open_class_device_path(path); - if (class_dev) - break; - - usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND); - } - - return class_dev; -} - -int wait_for_class_device(struct sysfs_class_device *class_dev, - const char **error) -{ - const struct subsystem_file { - const char *subsystem; - const char *file; - } subsystem_files[] = { - { .subsystem = "net", .file = "ifindex" }, - { .subsystem = "scsi_host", .file = "unique_id" }, - { .subsystem = "pcmcia_socket", .file = "card_type" }, - { .subsystem = "bluetooth", .file = "address" }, - { .subsystem = "firmware", .file = "data" }, - { .subsystem = "fc_transport", .file = "port_id" }, - { .subsystem = "fc_host", .file = "port_id" }, - { .subsystem = "spi_transport", .file = "width" }, - { .subsystem = "spi_host", .file = "width" }, - { NULL, NULL } - }; - - const struct subsystem_file *subsys_file; - struct sysfs_class_device *class_dev_parent; - struct sysfs_device *devices_dev = NULL; - char filename[PATH_SIZE]; - int loop; - - /* look if we want to wait for a file */ - for (subsys_file = subsystem_files; subsys_file->subsystem != NULL; subsys_file++) - if (strcmp(class_dev->classname, subsys_file->subsystem) == 0) - break; - - if (subsys_file->file == NULL) { - dbg("class '%s' has no file to wait for", class_dev->classname); - return 0; - } - - snprintf(filename, sizeof(filename), "%s/%s", class_dev->path, subsys_file->file); - filename[sizeof(filename)-1] = '\0'; - dbg("looking at class '%s' for specific file '%s'", class_dev->classname, filename); - - loop = WAIT_MAX_SECONDS * WAIT_LOOP_PER_SECOND; - while (--loop) { - struct stat stats; - - if (stat(class_dev->path, &stats) == -1) { - dbg("'%s' now disappeared (probably remove has beaten us)", class_dev->path); - return -ENODEV; - } - - if (stat(filename, &stats) == 0) { - dbg("class '%s' specific file '%s' found", class_dev->classname, subsys_file->file); - return 0; - } - - usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND); - } - - dbg("error: getting class '%s' specific file '%s'", class_dev->classname, subsys_file->file); - if (error) - *error = "class specific file unavailable"; - return -1; - - /* skip devices without devices-link */ - if (getenv("PHYSDEVPATH") == NULL) { - dbg("the kernel says, that there is no physical device for '%s'", class_dev->path); - return 1; - } - - /* the symlink may be on the parent device */ - class_dev_parent = sysfs_get_classdev_parent(class_dev); - if (class_dev_parent) - dbg("looking at parent device for device link '%s'", class_dev_parent->path); - - /* wait for the symlink to the devices device */ - dbg("waiting for symlink to devices device"); - loop = WAIT_MAX_SECONDS * WAIT_LOOP_PER_SECOND; - while (--loop) { - if (class_dev_parent) - devices_dev = sysfs_get_classdev_device(class_dev_parent); - else - devices_dev = sysfs_get_classdev_device(class_dev); - - if (devices_dev) - break; - - usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND); - } - if (!devices_dev) { - dbg(" error: no devices device symlink found"); - if (error) - *error = "no device symlink"; - return -ENODEV; - } - dbg("device symlink found pointing to '%s'", devices_dev->path); - - return wait_for_devices_device(devices_dev, error); -} - -struct sysfs_device *wait_devices_device_open(const char *path) -{ - struct sysfs_device *devices_dev = NULL; - int loop; - - loop = WAIT_MAX_SECONDS * WAIT_LOOP_PER_SECOND; - while (--loop) { - devices_dev = sysfs_open_device_path(path); - if (devices_dev) - break; - - usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND); - } - - return devices_dev; -} diff --git a/udev_sysfs.h b/udev_sysfs.h deleted file mode 100644 index 5b87d6bf..00000000 --- a/udev_sysfs.h +++ /dev/null @@ -1,40 +0,0 @@ -/* - * udev_sysfs.h - * - * 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. - * - */ - -#ifndef _UDEV_SYSFS_H_ -#define _UDEV_SYSFS_H_ - -#include "libsysfs/sysfs/libsysfs.h" - -#define WAIT_MAX_SECONDS 3 -#define WAIT_LOOP_PER_SECOND 20 - -extern dev_t get_devt(struct sysfs_class_device *class_dev); - -/* /sys/class, /sys/block devices */ -extern struct sysfs_class_device *wait_class_device_open(const char *path); -extern int wait_for_class_device(struct sysfs_class_device *class_dev, const char **error); - -/* /sys/devices devices */ -extern struct sysfs_device *wait_devices_device_open(const char *path); -extern int wait_for_devices_device(struct sysfs_device *devices_dev, const char **error); - -#endif /* _UDEV_SYSFS_H_ */ diff --git a/udevstart.c b/udevstart.c index 8ee079db..11063f67 100644 --- a/udevstart.c +++ b/udevstart.c @@ -40,7 +40,6 @@ #include "libsysfs/sysfs/libsysfs.h" #include "udev_libc_wrapper.h" -#include "udev_sysfs.h" #include "udev.h" #include "udev_version.h" #include "logging.h" @@ -28,7 +28,6 @@ #include "libsysfs/sysfs/libsysfs.h" #include "udev.h" -#include "udev_sysfs.h" #include "udev_utils.h" #include "udev_version.h" #include "udev_rules.h" |