X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=udev%2Flib%2Flibudev-device.c;h=8e29efff86b2ea18b6b2414f343b4fd0a7849d00;hb=cb14f4543a941ff8a22ef2725df86b3b0190a189;hp=2f685bd8e893849d1b93c48f1c5e16476d41ff23;hpb=517814e7d07fb7a2a4f914c973a8164d4341c6c4;p=elogind.git diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c index 2f685bd8e..8e29efff8 100644 --- a/udev/lib/libudev-device.c +++ b/udev/lib/libudev-device.c @@ -3,18 +3,10 @@ * * Copyright (C) 2008 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. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. */ #include @@ -32,7 +24,6 @@ #include "libudev-private.h" struct udev_device { - int refcount; struct udev *udev; struct udev_device *parent_device; char *syspath; @@ -41,21 +32,34 @@ struct udev_device { const char *sysnum; char *devnode; char *subsystem; - struct udev_list_node devlinks_list; - struct udev_list_node properties_list; - char *action; - int event_timeout; + char *devtype; char *driver; + char *action; char *devpath_old; char *physdevpath; - int timeout; - dev_t devnum; + char *knodename; + char **envp; + char *monitor_buf; + size_t monitor_buf_len; + struct udev_list_node devlinks_list; + struct udev_list_node properties_list; + struct udev_list_node sysattr_list; unsigned long long int seqnum; + int event_timeout; + int timeout; int num_fake_partitions; int devlink_priority; - int ignore_remove; - struct udev_list_node attr_list; - int info_loaded; + int refcount; + dev_t devnum; + int watch_handle; + unsigned int parent_set:1; + unsigned int subsystem_set:1; + unsigned int devtype_set:1; + unsigned int devlinks_uptodate:1; + unsigned int envp_uptodate:1; + unsigned int driver_set:1; + unsigned int info_loaded:1; + unsigned int ignore_remove:1; }; static size_t devpath_to_db_path(struct udev *udev, const char *devpath, char *filename, size_t len) @@ -69,7 +73,7 @@ static size_t devpath_to_db_path(struct udev *udev, const char *devpath, char *f return util_path_encode(&filename[start], len - start); } -static int device_read_db(struct udev_device *udev_device) +int udev_device_read_db(struct udev_device *udev_device) { struct stat stats; char filename[UTIL_PATH_SIZE]; @@ -79,7 +83,7 @@ static int device_read_db(struct udev_device *udev_device) devpath_to_db_path(udev_device->udev, udev_device->devpath, filename, sizeof(filename)); if (lstat(filename, &stats) != 0) { - info(udev_device->udev, "no db file to read %s: %m\n", filename); + dbg(udev_device->udev, "no db file to read %s: %m\n", filename); return -1; } if ((stats.st_mode & S_IFMT) == S_IFLNK) { @@ -92,7 +96,7 @@ static int device_read_db(struct udev_device *udev_device) if (target_len > 0) target[target_len] = '\0'; else { - info(udev_device->udev, "error reading db link %s: %m\n", filename); + dbg(udev_device->udev, "error reading db link %s: %m\n", filename); return -1; } @@ -126,7 +130,7 @@ static int device_read_db(struct udev_device *udev_device) f = fopen(filename, "r"); if (f == NULL) { - info(udev_device->udev, "error reading db file %s: %m\n", filename); + dbg(udev_device->udev, "error reading db file %s: %m\n", filename); return -1; } while (fgets(line, sizeof(line), f)) { @@ -166,6 +170,9 @@ static int device_read_db(struct udev_device *udev_device) case 'E': udev_device_add_property_from_string(udev_device, val); break; + case 'W': + udev_device_set_watch_handle(udev_device, atoi(val)); + break; } } fclose(f); @@ -174,7 +181,7 @@ static int device_read_db(struct udev_device *udev_device) return 0; } -static int device_read_uevent_file(struct udev_device *udev_device) +int udev_device_read_uevent_file(struct udev_device *udev_device) { char filename[UTIL_PATH_SIZE]; FILE *f; @@ -196,10 +203,14 @@ static int device_read_uevent_file(struct udev_device *udev_device) continue; pos[0] = '\0'; - if (strncmp(line, "MAJOR=", 6) == 0) + if (strncmp(line, "DEVTYPE=", 8) == 0) + udev_device_set_devtype(udev_device, &line[8]); + else if (strncmp(line, "MAJOR=", 6) == 0) maj = strtoull(&line[6], NULL, 10); else if (strncmp(line, "MINOR=", 6) == 0) min = strtoull(&line[6], NULL, 10); + else if (strncmp(line, "DEVNAME=", 8) == 0) + udev_device_set_knodename(udev_device, &line[8]); udev_device_add_property_from_string(udev_device, line); } @@ -213,8 +224,8 @@ static int device_read_uevent_file(struct udev_device *udev_device) static void device_load_info(struct udev_device *device) { device->info_loaded = 1; - device_read_uevent_file(device); - device_read_db(device); + udev_device_read_uevent_file(device); + udev_device_read_db(device); } void udev_device_set_info_loaded(struct udev_device *device) @@ -225,20 +236,27 @@ void udev_device_set_info_loaded(struct udev_device *device) struct udev_device *device_new(struct udev *udev) { struct udev_device *udev_device; + struct udev_list_entry *list_entry; if (udev == NULL) return NULL; - udev_device = malloc(sizeof(struct udev_device)); + udev_device = calloc(1, sizeof(struct udev_device)); if (udev_device == NULL) return NULL; - memset(udev_device, 0x00, sizeof(struct udev_device)); udev_device->refcount = 1; udev_device->udev = udev; udev_list_init(&udev_device->devlinks_list); udev_list_init(&udev_device->properties_list); - udev_list_init(&udev_device->attr_list); - info(udev_device->udev, "udev_device: %p created\n", udev_device); + udev_list_init(&udev_device->sysattr_list); + udev_device->event_timeout = -1; + udev_device->watch_handle = -1; + /* copy global properties */ + udev_list_entry_foreach(list_entry, udev_get_properties_list_entry(udev)) + udev_device_add_property(udev_device, + udev_list_entry_get_name(list_entry), + udev_list_entry_get_value(list_entry)); + dbg(udev_device->udev, "udev_device: %p created\n", udev_device); return udev_device; } @@ -252,7 +270,7 @@ struct udev_device *device_new(struct udev *udev) * path to the device, including the sys mount point. * * The initial refcount is 1, and needs to be decremented to - * release the ressources of the udev device. + * release the resources of the udev device. * * Returns: a new udev device, or #NULL, if it does not exist **/ @@ -280,8 +298,8 @@ struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char * /* path is not a root directory */ subdir = &syspath[len+1]; pos = strrchr(subdir, '/'); - if (pos == NULL || pos < &subdir[2]) { - info(udev, "not a subdir :%s\n", syspath); + if (pos == NULL || pos[1] == '\0' || pos < &subdir[2]) { + dbg(udev, "not a subdir :%s\n", syspath); return NULL; } @@ -316,13 +334,13 @@ struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char * util_strlcpy(file, path, sizeof(file)); util_strlcat(file, "/uevent", sizeof(file)); if (stat(file, &statbuf) != 0) { - info(udev, "not a device: %s\n", syspath); + dbg(udev, "not a device: %s\n", syspath); return NULL; } } else { /* everything else just needs to be a directory */ if (stat(path, &statbuf) != 0 || !S_ISDIR(statbuf.st_mode)) { - info(udev, "directory not found: %s\n", syspath); + dbg(udev, "directory not found: %s\n", syspath); return NULL; } } @@ -487,9 +505,11 @@ static struct udev_device *device_new_from_parent(struct udev_device *udev_devic strncmp(udev_device->devpath, "/block/", 7) == 0) { util_strlcpy(path, udev_device->syspath, sizeof(path)); util_strlcat(path, "/device", sizeof(path)); - if (util_resolve_sys_link(udev_device->udev, path, sizeof(path)) == 0) + if (util_resolve_sys_link(udev_device->udev, path, sizeof(path)) == 0) { udev_device_parent = udev_device_new_from_syspath(udev_device->udev, path); - return udev_device_parent; + if (udev_device_parent != NULL) + return udev_device_parent; + } } util_strlcpy(path, udev_device->syspath, sizeof(path)); @@ -512,26 +532,35 @@ struct udev_device *udev_device_get_parent(struct udev_device *udev_device) { if (udev_device == NULL) return NULL; - - if (udev_device->parent_device != NULL) { - info(udev_device->udev, "returning existing parent %p\n", udev_device->parent_device); - return udev_device->parent_device; + if (!udev_device->parent_set) { + udev_device->parent_set = 1; + udev_device->parent_device = device_new_from_parent(udev_device); } - udev_device->parent_device = device_new_from_parent(udev_device); + if (udev_device->parent_device != NULL) + dbg(udev_device->udev, "returning existing parent %p\n", udev_device->parent_device); return udev_device->parent_device; } -struct udev_device *udev_device_get_parent_with_subsystem(struct udev_device *udev_device, const char *subsystem) +struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, const char *subsystem, const char *devtype) { struct udev_device *parent; + if (subsystem == NULL) + return NULL; + parent = udev_device_get_parent(udev_device); while (parent != NULL) { const char *parent_subsystem; + const char *parent_devtype; parent_subsystem = udev_device_get_subsystem(parent); - if (parent_subsystem != NULL && strcmp(parent_subsystem, subsystem) == 0) - break; + if (parent_subsystem != NULL && strcmp(parent_subsystem, subsystem) == 0) { + if (devtype == NULL) + break; + parent_devtype = udev_device_get_devtype(parent); + if (parent_devtype != NULL && strcmp(parent_devtype, devtype) == 0) + break; + } parent = udev_device_get_parent(parent); } return parent; @@ -573,7 +602,7 @@ struct udev_device *udev_device_ref(struct udev_device *udev_device) * @udev_device: udev device * * Drop a reference of a udev device. If the refcount reaches zero, - * the ressources of the device will be released. + * the resources of the device will be released. * **/ void udev_device_unref(struct udev_device *udev_device) @@ -589,14 +618,18 @@ void udev_device_unref(struct udev_device *udev_device) free(udev_device->sysname); free(udev_device->devnode); free(udev_device->subsystem); - udev_list_cleanup(udev_device->udev, &udev_device->devlinks_list); - udev_list_cleanup(udev_device->udev, &udev_device->properties_list); + free(udev_device->devtype); + udev_list_cleanup_entries(udev_device->udev, &udev_device->devlinks_list); + udev_list_cleanup_entries(udev_device->udev, &udev_device->properties_list); free(udev_device->action); free(udev_device->driver); free(udev_device->devpath_old); + free(udev_device->knodename); free(udev_device->physdevpath); - udev_list_cleanup(udev_device->udev, &udev_device->attr_list); - info(udev_device->udev, "udev_device: %p released\n", udev_device); + udev_list_cleanup_entries(udev_device->udev, &udev_device->sysattr_list); + free(udev_device->envp); + free(udev_device->monitor_buf); + dbg(udev_device->udev, "udev_device: %p released\n", udev_device); free(udev_device); } @@ -679,31 +712,50 @@ const char *udev_device_get_subsystem(struct udev_device *udev_device) if (udev_device == NULL) return NULL; - if (udev_device->subsystem != NULL) - return udev_device->subsystem; - - /* read "subsytem" link */ - if (util_get_sys_subsystem(udev_device->udev, udev_device->syspath, subsystem, sizeof(subsystem)) > 0) { - udev_device->subsystem = strdup(subsystem); - return udev_device->subsystem; + if (!udev_device->subsystem_set) { + udev_device->subsystem_set = 1; + /* read "subsytem" link */ + if (util_get_sys_subsystem(udev_device->udev, udev_device->syspath, subsystem, sizeof(subsystem)) > 0) { + udev_device_set_subsystem(udev_device, subsystem); + return udev_device->subsystem; + } + /* implicit names */ + if (strncmp(udev_device->devpath, "/module/", 8) == 0) { + udev_device_set_subsystem(udev_device, "module"); + return udev_device->subsystem; + } + if (strstr(udev_device->devpath, "/drivers/") != NULL) { + udev_device_set_subsystem(udev_device, "drivers"); + return udev_device->subsystem; + } + if (strncmp(udev_device->devpath, "/subsystem/", 11) == 0 || + strncmp(udev_device->devpath, "/class/", 7) == 0 || + strncmp(udev_device->devpath, "/bus/", 5) == 0) { + udev_device_set_subsystem(udev_device, "subsystem"); + return udev_device->subsystem; + } } + return udev_device->subsystem; +} - /* implicit names */ - if (strncmp(udev_device->devpath, "/module/", 8) == 0) { - udev_device->subsystem = strdup("module"); - return udev_device->subsystem; - } - if (strstr(udev_device->devpath, "/drivers/") != NULL) { - udev_device->subsystem = strdup("drivers"); - return udev_device->subsystem; - } - if (strncmp(udev_device->devpath, "/subsystem/", 11) == 0 || - strncmp(udev_device->devpath, "/class/", 7) == 0 || - strncmp(udev_device->devpath, "/bus/", 5) == 0) { - udev_device->subsystem = strdup("subsystem"); - return udev_device->subsystem; +/** + * udev_device_get_devtype: + * @udev_device: udev device + * + * Retrieve the devtype string of the udev device. + * + * Returns: the devtype name of the udev device, or #NULL if it can not be determined + **/ +const char *udev_device_get_devtype(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + if (!udev_device->devtype_set) { + udev_device->devtype_set = 1; + if (!udev_device->info_loaded) + udev_device_read_uevent_file(udev_device); } - return NULL; + return udev_device->devtype; } /** @@ -728,6 +780,12 @@ struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device * return udev_list_get_entry(&udev_device->devlinks_list); } +void udev_device_cleanup_devlinks_list(struct udev_device *udev_device) +{ + udev_device->devlinks_uptodate = 0; + udev_list_cleanup_entries(udev_device->udev, &udev_device->devlinks_list); +} + /** * udev_device_get_properties_list_entry: * @udev_device: udev device @@ -746,6 +804,21 @@ struct udev_list_entry *udev_device_get_properties_list_entry(struct udev_device return NULL; if (!udev_device->info_loaded) device_load_info(udev_device); + if (!udev_device->devlinks_uptodate) { + char symlinks[UTIL_PATH_SIZE]; + struct udev_list_entry *list_entry; + + udev_device->devlinks_uptodate = 1; + list_entry = udev_device_get_devlinks_list_entry(udev_device); + if (list_entry != NULL) { + util_strlcpy(symlinks, udev_list_entry_get_name(list_entry), sizeof(symlinks)); + udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry)) { + util_strlcat(symlinks, " ", sizeof(symlinks)); + util_strlcat(symlinks, udev_list_entry_get_name(list_entry), sizeof(symlinks)); + } + udev_device_add_property(udev_device, "DEVLINKS", symlinks); + } + } return udev_list_get_entry(&udev_device->properties_list); } @@ -755,11 +828,11 @@ const char *udev_device_get_driver(struct udev_device *udev_device) if (udev_device == NULL) return NULL; - if (udev_device->driver != NULL) - return udev_device->driver; - if (util_get_sys_driver(udev_device->udev, udev_device->syspath, driver, sizeof(driver)) < 2) - return NULL; - udev_device->driver = strdup(driver); + if (!udev_device->driver_set) { + udev_device->driver_set = 1; + if (util_get_sys_driver(udev_device->udev, udev_device->syspath, driver, sizeof(driver)) > 0) + udev_device->driver = strdup(driver); + } return udev_device->driver; } @@ -786,11 +859,11 @@ unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device) return udev_device->seqnum; } -const char *udev_device_get_attr_value(struct udev_device *udev_device, const char *attr) +const char *udev_device_get_sysattr_value(struct udev_device *udev_device, const char *sysattr) { struct udev_list_entry *list_entry; char path[UTIL_PATH_SIZE]; - char value[UTIL_NAME_SIZE]; + char value[4096]; struct stat statbuf; int fd; ssize_t size; @@ -798,41 +871,47 @@ const char *udev_device_get_attr_value(struct udev_device *udev_device, const ch if (udev_device == NULL) return NULL; - if (attr == NULL) + if (sysattr == NULL) return NULL; /* look for possibly already cached result */ - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_device->attr_list)) { - if (strcmp(udev_list_entry_get_name(list_entry), attr) == 0) { - info(udev_device->udev, "got '%s' (%s) from cache\n", - attr, udev_list_entry_get_value(list_entry)); + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_device->sysattr_list)) { + if (strcmp(udev_list_entry_get_name(list_entry), sysattr) == 0) { + dbg(udev_device->udev, "got '%s' (%s) from cache\n", + sysattr, udev_list_entry_get_value(list_entry)); return udev_list_entry_get_value(list_entry); } } util_strlcpy(path, udev_device_get_syspath(udev_device), sizeof(path)); util_strlcat(path, "/", sizeof(path)); - util_strlcat(path, attr, sizeof(path)); + util_strlcat(path, sysattr, sizeof(path)); if (lstat(path, &statbuf) != 0) { - info(udev_device->udev, "stat '%s' failed: %m\n", path); + dbg(udev_device->udev, "no attribute '%s', keep negative entry\n", path); + udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list, sysattr, NULL, 0, 0); goto out; } if (S_ISLNK(statbuf.st_mode)) { - /* links return the last element of the target path */ char target[UTIL_NAME_SIZE]; int len; char *pos; + /* some core links return the last element of the target path */ + if (strcmp(sysattr, "driver") != 0 && + strcmp(sysattr, "subsystem") != 0 && + strcmp(sysattr, "module") != 0) + goto out; + len = readlink(path, target, sizeof(target)); if (len > 0) { target[len] = '\0'; pos = strrchr(target, '/'); if (pos != NULL) { pos = &pos[1]; - info(udev_device->udev, "cache '%s' with link value '%s'\n", attr, pos); - list_entry = udev_list_entry_add(udev_device->udev, &udev_device->attr_list, attr, pos, 0, 0); + dbg(udev_device->udev, "cache '%s' with link value '%s'\n", sysattr, pos); + list_entry = udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list, sysattr, pos, 0, 0); val = udev_list_entry_get_value(list_entry); } } @@ -850,7 +929,7 @@ const char *udev_device_get_attr_value(struct udev_device *udev_device, const ch /* read attribute value */ fd = open(path, O_RDONLY); if (fd < 0) { - info(udev_device->udev, "attribute '%s' can not be opened\n", path); + dbg(udev_device->udev, "attribute '%s' can not be opened\n", path); goto out; } size = read(fd, value, sizeof(value)); @@ -863,8 +942,8 @@ const char *udev_device_get_attr_value(struct udev_device *udev_device, const ch /* got a valid value, store it in cache and return it */ value[size] = '\0'; util_remove_trailing_chars(value, '\n'); - info(udev_device->udev, "'%s' has attribute value '%s'\n", path, value); - list_entry = udev_list_entry_add(udev_device->udev, &udev_device->attr_list, attr, value, 0, 0); + dbg(udev_device->udev, "'%s' has attribute value '%s'\n", path, value); + list_entry = udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list, sysattr, value, 0, 0); val = udev_list_entry_get_value(list_entry); out: return val; @@ -898,49 +977,70 @@ int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath } /* trailing number */ - while (isdigit(udev_device->sysname[--len])) + while (len > 0 && isdigit(udev_device->sysname[--len])) udev_device->sysnum = &udev_device->sysname[len]; + + /* sysname is completely numeric */ + if (len == 0) + udev_device->sysnum = NULL; + return 0; } int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem) { + free(udev_device->subsystem); udev_device->subsystem = strdup(subsystem); if (udev_device->subsystem == NULL) return -ENOMEM; + udev_device->subsystem_set = 1; udev_device_add_property(udev_device, "SUBSYSTEM", udev_device->subsystem); return 0; } +int udev_device_set_devtype(struct udev_device *udev_device, const char *devtype) +{ + free(udev_device->devtype); + udev_device->devtype = strdup(devtype); + if (udev_device->devtype == NULL) + return -ENOMEM; + udev_device->devtype_set = 1; + udev_device_add_property(udev_device, "DEVTYPE", udev_device->devtype); + return 0; +} + int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode) { free(udev_device->devnode); udev_device->devnode = strdup(devnode); + if (devnode == NULL) + return 0; if (udev_device->devnode == NULL) return -ENOMEM; - udev_device_add_property(udev_device, "DEVNODE", udev_device->devnode); + udev_device_add_property(udev_device, "DEVNAME", udev_device->devnode); return 0; } int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink) { - char symlinks[UTIL_PATH_SIZE]; - struct udev_list_entry *list_entry; - + udev_device->devlinks_uptodate = 0; if (udev_list_entry_add(udev_device->udev, &udev_device->devlinks_list, devlink, NULL, 1, 0) == NULL) return -ENOMEM; - list_entry = udev_device_get_devlinks_list_entry(udev_device); - util_strlcpy(symlinks, udev_list_entry_get_name(list_entry), sizeof(symlinks)); - udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry)) { - util_strlcat(symlinks, " ", sizeof(symlinks)); - util_strlcat(symlinks, udev_list_entry_get_name(list_entry), sizeof(symlinks)); - } - udev_device_add_property(udev_device, "DEVLINKS", symlinks); return 0; } struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value) { + udev_device->envp_uptodate = 0; + if (value == NULL) { + struct udev_list_entry *list_entry; + + list_entry = udev_device_get_properties_list_entry(udev_device); + list_entry = udev_list_entry_get_by_name(list_entry, key); + if (list_entry != NULL) + udev_list_entry_delete(list_entry); + return NULL; + } return udev_list_entry_add(udev_device->udev, &udev_device->properties_list, key, value, 1, 0); } @@ -949,7 +1049,7 @@ struct udev_list_entry *udev_device_add_property_from_string(struct udev_device char name[UTIL_PATH_SIZE]; char *val; - strncpy(name, property, sizeof(name)); + util_strlcpy(name, property, sizeof(name)); val = strchr(name, '='); if (val == NULL) return NULL; @@ -960,21 +1060,108 @@ struct udev_list_entry *udev_device_add_property_from_string(struct udev_device return udev_device_add_property(udev_device, name, val); } +const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key) +{ + struct udev_list_entry *list_entry; + + if (udev_device == NULL) + return NULL; + if (key == NULL) + return NULL; + + list_entry = udev_device_get_properties_list_entry(udev_device); + list_entry = udev_list_entry_get_by_name(list_entry, key); + return udev_list_entry_get_value(list_entry); +} + +#define ENVP_SIZE 128 +#define MONITOR_BUF_SIZE 4096 +static int update_envp_monitor_buf(struct udev_device *udev_device) +{ + struct udev_list_entry *list_entry; + size_t bufpos; + size_t len; + unsigned int i; + + /* monitor buffer of property strings */ + free(udev_device->monitor_buf); + udev_device->monitor_buf_len = 0; + udev_device->monitor_buf = malloc(MONITOR_BUF_SIZE); + if (udev_device->monitor_buf == NULL) + return -ENOMEM; + + /* envp array, strings will point into monitor buffer */ + if (udev_device->envp == NULL) + udev_device->envp = malloc(sizeof(char *) * ENVP_SIZE); + if (udev_device->envp == NULL) + return -ENOMEM; + + i = 0; + bufpos = 0; + udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) { + /* add string to envp array */ + udev_device->envp[i++] = &udev_device->monitor_buf[bufpos]; + if (i+1 >= ENVP_SIZE) + return -EINVAL; + + /* add property string to monitor buffer */ + len = util_strlcpy(&udev_device->monitor_buf[bufpos], + udev_list_entry_get_name(list_entry), MONITOR_BUF_SIZE-bufpos); + if (len >= MONITOR_BUF_SIZE-bufpos) + return -EINVAL; + bufpos += len; + len = util_strlcpy(&udev_device->monitor_buf[bufpos], "=", MONITOR_BUF_SIZE-bufpos); + if (len >= MONITOR_BUF_SIZE-bufpos) + return -EINVAL; + bufpos += len; + len = util_strlcpy(&udev_device->monitor_buf[bufpos], udev_list_entry_get_value(list_entry), + MONITOR_BUF_SIZE-bufpos); + if (len+1 >= MONITOR_BUF_SIZE-bufpos) + return -EINVAL; + bufpos += len+1; + } + udev_device->envp[i] = NULL; + udev_device->monitor_buf_len = bufpos; + udev_device->envp_uptodate = 1; + dbg(udev_device->udev, "filled envp/monitor buffer, %u properties, %zu bytes\n", i, bufpos); + return 0; +} + +char **udev_device_get_properties_envp(struct udev_device *udev_device) +{ + if (!udev_device->envp_uptodate) + if (update_envp_monitor_buf(udev_device) != 0) + return NULL; + return udev_device->envp; +} + +ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf) +{ + if (!udev_device->envp_uptodate) + if (update_envp_monitor_buf(udev_device) != 0) + return -EINVAL; + *buf = udev_device->monitor_buf; + return udev_device->monitor_buf_len; +} + int udev_device_set_action(struct udev_device *udev_device, const char *action) { free(udev_device->action); udev_device->action = strdup(action); if (udev_device->action == NULL) return -ENOMEM; - udev_device_add_property(udev_device, "ACTION", action); + udev_device_add_property(udev_device, "ACTION", udev_device->action); return 0; } int udev_device_set_driver(struct udev_device *udev_device, const char *driver) { + free(udev_device->driver); udev_device->driver = strdup(driver); if (udev_device->driver == NULL) return -ENOMEM; + udev_device->driver_set = 1; + udev_device_add_property(udev_device, "DRIVER", udev_device->driver); return 0; } @@ -988,6 +1175,20 @@ int udev_device_set_devpath_old(struct udev_device *udev_device, const char *dev udev_device->devpath_old = strdup(devpath_old); if (udev_device->devpath_old == NULL) return -ENOMEM; + udev_device_add_property(udev_device, "DEVPATH_OLD", udev_device->devpath_old); + return 0; +} + +const char *udev_device_get_knodename(struct udev_device *udev_device) +{ + return udev_device->knodename; +} + +int udev_device_set_knodename(struct udev_device *udev_device, const char *knodename) +{ + udev_device->knodename = strdup(knodename); + if (udev_device->knodename == NULL) + return -ENOMEM; return 0; } @@ -1029,13 +1230,24 @@ int udev_device_set_event_timeout(struct udev_device *udev_device, int event_tim int udev_device_set_seqnum(struct udev_device *udev_device, unsigned long long int seqnum) { + char num[32]; + udev_device->seqnum = seqnum; + snprintf(num, sizeof(num), "%llu", seqnum); + udev_device_add_property(udev_device, "SEQNUM", num); return 0; } int udev_device_set_devnum(struct udev_device *udev_device, dev_t devnum) { + char num[32]; + udev_device->devnum = devnum; + + snprintf(num, sizeof(num), "%u", major(devnum)); + udev_device_add_property(udev_device, "MAJOR", num); + snprintf(num, sizeof(num), "%u", minor(devnum)); + udev_device_add_property(udev_device, "MINOR", num); return 0; } @@ -1077,3 +1289,16 @@ int udev_device_set_ignore_remove(struct udev_device *udev_device, int ignore) udev_device->ignore_remove = ignore; return 0; } + +int udev_device_get_watch_handle(struct udev_device *udev_device) +{ + if (!udev_device->info_loaded) + device_load_info(udev_device); + return udev_device->watch_handle; +} + +int udev_device_set_watch_handle(struct udev_device *udev_device, int handle) +{ + udev_device->watch_handle = handle; + return 0; +}