+++ /dev/null
-/***
- This file is part of systemd.
-
- Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
- Copyright 2014 Tom Gundersen <teg@jklm.no>
-
- systemd 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.
-
- systemd 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <ctype.h>
-#include <sys/types.h>
-#include <net/if.h>
-
-#include "util.h"
-#include "macro.h"
-#include "refcnt.h"
-#include "path-util.h"
-#include "strxcpyx.h"
-#include "fileio.h"
-#include "hashmap.h"
-#include "set.h"
-#include "strv.h"
-#include "mkdir.h"
-
-#include "sd-device.h"
-
-#include "device-util.h"
-#include "device-internal.h"
-#include "device-private.h"
-
-int device_add_property(sd_device *device, const char *key, const char *value) {
- int r;
-
- assert(device);
- assert(key);
-
- r = device_add_property_aux(device, key, value, false);
- if (r < 0)
- return r;
-
- if (key[0] != '.') {
- r = device_add_property_aux(device, key, value, true);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static int device_add_property_internal_from_string(sd_device *device, const char *str) {
- _cleanup_free_ char *key = NULL;
- char *value;
-
- assert(device);
- assert(str);
-
- key = strdup(str);
- if (!key)
- return -ENOMEM;
-
- value = strchr(key, '=');
- if (!value)
- return -EINVAL;
-
- *value = '\0';
-
- if (isempty(++value))
- value = NULL;
-
- return device_add_property_internal(device, key, value);
-}
-
-static int handle_db_line(sd_device *device, char key, const char *value) {
- char *path;
- int r;
-
- assert(device);
- assert(value);
-
- switch (key) {
- case 'S':
- path = strjoina("/dev/", value);
- r = device_add_devlink(device, path);
- if (r < 0)
- return r;
-
- break;
- case 'L':
- r = safe_atoi(value, &device->devlink_priority);
- if (r < 0)
- return r;
-
- break;
- case 'E':
- r = device_add_property_internal_from_string(device, value);
- if (r < 0)
- return r;
-
- break;
- case 'G':
- r = device_add_tag(device, value);
- if (r < 0)
- return r;
-
- break;
- case 'W':
- r = safe_atoi(value, &device->watch_handle);
- if (r < 0)
- return r;
-
- break;
- case 'I':
- r = device_set_usec_initialized(device, value);
- if (r < 0)
- return r;
-
- break;
- default:
- log_debug("device db: unknown key '%c'", key);
- }
-
- return 0;
-}
-
-void device_set_devlink_priority(sd_device *device, int priority) {
- assert(device);
-
- device->devlink_priority = priority;
-}
-
-void device_set_is_initialized(sd_device *device) {
- assert(device);
-
- device->is_initialized = true;
-}
-
-int device_ensure_usec_initialized(sd_device *device, sd_device *device_old) {
- char num[DECIMAL_STR_MAX(usec_t)];
- usec_t usec_initialized;
- int r;
-
- assert(device);
-
- if (device_old && device_old->usec_initialized > 0)
- usec_initialized = device_old->usec_initialized;
- else
- usec_initialized = now(CLOCK_MONOTONIC);
-
- r = snprintf(num, sizeof(num), USEC_FMT, usec_initialized);
- if (r < 0)
- return -errno;
-
- r = device_set_usec_initialized(device, num);
- if (r < 0)
- return r;
-
- return 0;
-}
-
-static int device_read_db(sd_device *device) {
- _cleanup_free_ char *db = NULL;
- char *path;
- const char *id, *value;
- char key;
- size_t db_len;
- unsigned i;
- int r;
-
- enum {
- PRE_KEY,
- KEY,
- PRE_VALUE,
- VALUE,
- INVALID_LINE,
- } state = PRE_KEY;
-
- assert(device);
-
- if (device->db_loaded || device->sealed)
- return 0;
-
- r = device_get_id_filename(device, &id);
- if (r < 0)
- return r;
-
- path = strjoina("/run/udev/data/", id);
-
- r = read_full_file(path, &db, &db_len);
- if (r < 0) {
- if (r == -ENOENT)
- return 0;
- else {
- log_debug("sd-device: failed to read db '%s': %s", path, strerror(-r));
- return r;
- }
- }
-
- /* devices with a database entry are initialized */
- device_set_is_initialized(device);
-
- for (i = 0; i < db_len; i++) {
- switch (state) {
- case PRE_KEY:
- if (!strchr(NEWLINE, db[i])) {
- key = db[i];
-
- state = KEY;
- }
-
- break;
- case KEY:
- if (db[i] != ':') {
- log_debug("sd-device: ignoring invalid db entry with key '%c'", key);
-
- state = INVALID_LINE;
- } else {
- db[i] = '\0';
-
- state = PRE_VALUE;
- }
-
- break;
- case PRE_VALUE:
- value = &db[i];
-
- state = VALUE;
-
- break;
- case INVALID_LINE:
- if (strchr(NEWLINE, db[i]))
- state = PRE_KEY;
-
- break;
- case VALUE:
- if (strchr(NEWLINE, db[i])) {
- db[i] = '\0';
- r = handle_db_line(device, key, value);
- if (r < 0)
- log_debug("sd-device: failed to handle db entry '%c:%s': %s", key, value, strerror(-r));
-
- state = PRE_KEY;
- }
-
- break;
- default:
- assert_not_reached("invalid state when parsing db");
- }
- }
-
- device->db_loaded = true;
-
- return 0;
-}
-
-uint64_t device_get_properties_generation(sd_device *device) {
- assert(device);
-
- return device->properties_generation;
-}
-
-uint64_t device_get_tags_generation(sd_device *device) {
- assert(device);
-
- return device->tags_generation;
-}
-
-uint64_t device_get_devlinks_generation(sd_device *device) {
- assert(device);
-
- return device->devlinks_generation;
-}
-
-int device_get_devnode_mode(sd_device *device, mode_t *mode) {
- int r;
-
- assert(device);
- assert(mode);
-
- r = device_read_db(device);
- if (r < 0)
- return r;
-
- *mode = device->devmode;
-
- return 0;
-}
-
-int device_get_devnode_uid(sd_device *device, uid_t *uid) {
- int r;
-
- assert(device);
- assert(uid);
-
- r = device_read_db(device);
- if (r < 0)
- return r;
-
- *uid = device->devuid;
-
- return 0;
-}
-
-static int device_set_devuid(sd_device *device, const char *uid) {
- unsigned u;
- int r;
-
- assert(device);
- assert(uid);
-
- r = safe_atou(uid, &u);
- if (r < 0)
- return r;
-
- r = device_add_property_internal(device, "DEVUID", uid);
- if (r < 0)
- return r;
-
- device->devuid = u;
-
- return 0;
-}
-
-int device_get_devnode_gid(sd_device *device, gid_t *gid) {
- int r;
-
- assert(device);
- assert(gid);
-
- r = device_read_db(device);
- if (r < 0)
- return r;
-
- *gid = device->devgid;
-
- return 0;
-}
-
-static int device_set_devgid(sd_device *device, const char *gid) {
- unsigned g;
- int r;
-
- assert(device);
- assert(gid);
-
- r = safe_atou(gid, &g);
- if (r < 0)
- return r;
-
- r = device_add_property_internal(device, "DEVGID", gid);
- if (r < 0)
- return r;
-
- device->devgid = g;
-
- return 0;
-}
-
-static int device_ammend(sd_device *device, const char *key, const char *value) {
- int r;
-
- assert(device);
- assert(key);
- assert(value);
-
- if (streq(key, "DEVPATH")) {
- char *path;
-
- path = strjoina("/sys", value);
-
- /* the caller must verify or trust this data (e.g., if it comes from the kernel) */
- r = device_set_syspath(device, path, false);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set syspath to '%s': %m", path);
- } else if (streq(key, "SUBSYSTEM")) {
- r = device_set_subsystem(device, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set subsystem to '%s': %m", value);
- } else if (streq(key, "DEVTYPE")) {
- r = device_set_devtype(device, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set devtype to '%s': %m", value);
- } else if (streq(key, "DEVNAME")) {
- r = device_set_devname(device, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set devname to '%s': %m", value);
- } else if (streq(key, "USEC_INITIALIZED")) {
- r = device_set_usec_initialized(device, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set usec-initialized to '%s': %m", value);
- } else if (streq(key, "DRIVER")) {
- r = device_set_driver(device, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set driver to '%s': %m", value);
- } else if (streq(key, "IFINDEX")) {
- r = device_set_ifindex(device, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set ifindex to '%s': %m", value);
- } else if (streq(key, "DEVMODE")) {
- r = device_set_devmode(device, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set devmode to '%s': %m", value);
- } else if (streq(key, "DEVUID")) {
- r = device_set_devuid(device, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set devuid to '%s': %m", value);
- } else if (streq(key, "DEVGID")) {
- r = device_set_devgid(device, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set devgid to '%s': %m", value);
- } else if (streq(key, "DEVLINKS")) {
- char *devlinks, *next;
-
- devlinks = strdupa(value);
-
- while ((next = strchr(devlinks, ' '))) {
- next[0] = '\0';
-
- r = device_add_devlink(device, devlinks);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not add devlink '%s': %m", devlinks);
-
- devlinks = next + 1;
- }
- } else if (streq(key, "TAGS")) {
- char *tags, *next;
-
- tags = strdupa(value);
-
- while ((next = strchr(tags, ':'))) {
- next[0] = '\0';
-
- r = device_add_tag(device, tags);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not add tag '%s': %m", tags);
-
- tags = next + 1;
- }
- } else {
- r = device_add_property_internal(device, key, value);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not add property '%s=%s': %m", key, value);
- }
-
- return 0;
-}
-
-static const char* const device_action_table[_DEVICE_ACTION_MAX] = {
- [DEVICE_ACTION_ADD] = "add",
- [DEVICE_ACTION_REMOVE] = "remove",
- [DEVICE_ACTION_CHANGE] = "change",
- [DEVICE_ACTION_MOVE] = "move",
- [DEVICE_ACTION_ONLINE] = "online",
- [DEVICE_ACTION_OFFLINE] = "offline",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(device_action, DeviceAction);
-
-static int device_append(sd_device *device, char *key, const char **_major, const char **_minor, uint64_t *_seqnum,
- DeviceAction *_action) {
- DeviceAction action = _DEVICE_ACTION_INVALID;
- uint64_t seqnum = 0;
- const char *major = NULL, *minor = NULL;
- char *value;
- int r;
-
- assert(device);
- assert(key);
- assert(_major);
- assert(_minor);
- assert(_seqnum);
- assert(_action);
-
- value = strchr(key, '=');
- if (!value) {
- log_debug("sd-device: not a key-value pair: '%s'", key);
- return -EINVAL;
- }
-
- *value = '\0';
-
- value++;
-
- if (streq(key, "MAJOR"))
- major = value;
- else if (streq(key, "MINOR"))
- minor = value;
- else {
- if (streq(key, "ACTION")) {
- action = device_action_from_string(value);
- if (action == _DEVICE_ACTION_INVALID)
- return -EINVAL;
- } else if (streq(key, "SEQNUM")) {
- r = safe_atou64(value, &seqnum);
- if (r < 0)
- return r;
- else if (seqnum == 0)
- /* kernel only sends seqnum > 0 */
- return -EINVAL;
- }
-
- r = device_ammend(device, key, value);
- if (r < 0)
- return r;
- }
-
- if (major != 0)
- *_major = major;
-
- if (minor != 0)
- *_minor = minor;
-
- if (action != _DEVICE_ACTION_INVALID)
- *_action = action;
-
- if (seqnum > 0)
- *_seqnum = seqnum;
-
- return 0;
-}
-
-void device_seal(sd_device *device) {
- assert(device);
-
- device->sealed = true;
-}
-
-static int device_verify(sd_device *device, DeviceAction action, uint64_t seqnum) {
- assert(device);
-
- if (!device->devpath || !device->subsystem || action == _DEVICE_ACTION_INVALID || seqnum == 0) {
- log_debug("sd-device: device created from strv lacks devpath, subsystem, action or seqnum");
- return -EINVAL;
- }
-
- device->sealed = true;
-
- return 0;
-}
-
-int device_new_from_strv(sd_device **ret, char **strv) {
- _cleanup_device_unref_ sd_device *device = NULL;
- char **key;
- const char *major = NULL, *minor = NULL;
- DeviceAction action = _DEVICE_ACTION_INVALID;
- uint64_t seqnum;
- int r;
-
- assert(ret);
- assert(strv);
-
- r = device_new_aux(&device);
- if (r < 0)
- return r;
-
- STRV_FOREACH(key, strv) {
- r = device_append(device, *key, &major, &minor, &seqnum, &action);
- if (r < 0)
- return r;
- }
-
- if (major) {
- r = device_set_devnum(device, major, minor);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set devnum %s:%s: %m", major, minor);
- }
-
- r = device_verify(device, action, seqnum);
- if (r < 0)
- return r;
-
- *ret = device;
- device = NULL;
-
- return 0;
-}
-
-int device_new_from_nulstr(sd_device **ret, uint8_t *nulstr, size_t len) {
- _cleanup_device_unref_ sd_device *device = NULL;
- const char *major = NULL, *minor = NULL;
- DeviceAction action = _DEVICE_ACTION_INVALID;
- uint64_t seqnum;
- unsigned i = 0;
- int r;
-
- assert(ret);
- assert(nulstr);
- assert(len);
-
- r = device_new_aux(&device);
- if (r < 0)
- return r;
-
- while (i < len) {
- char *key;
- const char *end;
-
- key = (char*)&nulstr[i];
- end = memchr(key, '\0', len - i);
- if (!end) {
- log_debug("sd-device: failed to parse nulstr");
- return -EINVAL;
- }
- i += end - key + 1;
-
- r = device_append(device, key, &major, &minor, &seqnum, &action);
- if (r < 0)
- return r;
- }
-
- if (major) {
- r = device_set_devnum(device, major, minor);
- if (r < 0)
- return log_debug_errno(r, "sd-device: could not set devnum %s:%s: %m", major, minor);
- }
-
- r = device_verify(device, action, seqnum);
- if (r < 0)
- return r;
-
- *ret = device;
- device = NULL;
-
- return 0;
-}
-
-static int device_update_properties_bufs(sd_device *device) {
- const char *val, *prop;
- char **buf_strv = NULL;
- uint8_t *buf_nulstr = NULL;
- size_t allocated_nulstr = 0, allocated_strv = 0;
- size_t nulstr_len = 0, strv_size = 0;
-
- assert(device);
-
- FOREACH_DEVICE_PROPERTY(device, prop, val) {
- size_t len = 0;
-
- len = strlen(prop) + 1 + strlen(val);
-
- buf_nulstr = GREEDY_REALLOC0(buf_nulstr, allocated_nulstr, nulstr_len + len + 2);
- if (!buf_nulstr)
- return -ENOMEM;
-
- buf_strv = GREEDY_REALLOC0(buf_strv, allocated_strv, strv_size + 2);
- if (!buf_strv)
- return -ENOMEM;
-
- buf_strv[++ strv_size] = (char *)&buf_nulstr[nulstr_len];
- strscpyl((char *)buf_nulstr + nulstr_len, len + 1, prop, "=", val, NULL);
- nulstr_len += len + 1;
- }
-
- free(device->properties_nulstr);
- free(device->properties_strv);
- device->properties_nulstr = buf_nulstr;
- device->properties_nulstr_len = nulstr_len;
- device->properties_strv = buf_strv;
-
- device->properties_buf_outdated = false;
-
- return 0;
-}
-
-int device_get_properties_nulstr(sd_device *device, const uint8_t **nulstr, size_t *len) {
- int r;
-
- assert(device);
- assert(nulstr);
- assert(len);
-
- if (device->properties_buf_outdated) {
- r = device_update_properties_bufs(device);
- if (r < 0)
- return r;
- }
-
- *nulstr = device->properties_nulstr;
- *len = device->properties_nulstr_len;
-
- return 0;
-}
-
-int device_get_properties_strv(sd_device *device, char ***strv) {
- int r;
-
- assert(device);
- assert(strv);
-
- r = device_update_properties_bufs(device);
- if (r < 0)
- return r;
-
- *strv = device->properties_strv;
-
- return 0;
-}
-
-int device_get_devlink_priority(sd_device *device, int *priority) {
- int r;
-
- assert(device);
- assert(priority);
-
- r = device_read_db(device);
- if (r < 0)
- return r;
-
- *priority = device->devlink_priority;
-
- return 0;
-}
-
-int device_get_watch_handle(sd_device *device, int *handle) {
- int r;
-
- assert(device);
- assert(handle);
-
- r = device_read_db(device);
- if (r < 0)
- return r;
-
- *handle = device->watch_handle;
-
- return 0;
-}
-
-void device_set_watch_handle(sd_device *device, int handle) {
- assert(device);
-
- device->watch_handle = handle;
-}
-
-int device_rename(sd_device *device, const char *name) {
- _cleanup_free_ char *dirname = NULL;
- char *new_syspath;
- const char *interface;
- int r;
-
- assert(device);
- assert(name);
-
- dirname = dirname_malloc(device->syspath);
- if (!dirname)
- return -ENOMEM;
-
- new_syspath = strjoina(dirname, "/", name);
-
- /* the user must trust that the new name is correct */
- r = device_set_syspath(device, new_syspath, false);
- if (r < 0)
- return r;
-
- r = sd_device_get_property_value(device, "INTERFACE", &interface);
- if (r >= 0) {
- r = device_add_property_internal(device, "INTERFACE", name);
- if (r < 0)
- return r;
-
- /* like DEVPATH_OLD, INTERFACE_OLD is not saved to the db, but only stays around for the current event */
- r = device_add_property_internal(device, "INTERFACE_OLD", interface);
- if (r < 0)
- return r;
- } else if (r != -ENOENT)
- return r;
-
- return 0;
-}
-
-int device_shallow_clone(sd_device *old_device, sd_device **new_device) {
- _cleanup_device_unref_ sd_device *ret = NULL;
- int r;
-
- assert(old_device);
- assert(new_device);
-
- r = device_new_aux(&ret);
- if (r < 0)
- return r;
-
- r = device_set_syspath(ret, old_device->syspath, false);
- if (r < 0)
- return r;
-
- r = device_set_subsystem(ret, old_device->subsystem);
- if (r < 0)
- return r;
-
- ret->devnum = old_device->devnum;
-
- *new_device = ret;
- ret = NULL;
-
- return 0;
-}
-
-int device_clone_with_db(sd_device *old_device, sd_device **new_device) {
- _cleanup_device_unref_ sd_device *ret = NULL;
- int r;
-
- assert(old_device);
- assert(new_device);
-
- r = device_shallow_clone(old_device, &ret);
- if (r < 0)
- return r;
-
- r = device_read_db(ret);
- if (r < 0)
- return r;
-
- ret->sealed = true;
-
- *new_device = ret;
- ret = NULL;
-
- return 0;
-}
-
-int device_new_from_synthetic_event(sd_device **new_device, const char *syspath, const char *action) {
- _cleanup_device_unref_ sd_device *ret = NULL;
- int r;
-
- assert(new_device);
- assert(syspath);
- assert(action);
-
- r = sd_device_new_from_syspath(&ret, syspath);
- if (r < 0)
- return r;
-
- r = device_read_uevent_file(ret);
- if (r < 0)
- return r;
-
- r = device_add_property_internal(ret, "ACTION", action);
- if (r < 0)
- return r;
-
- *new_device = ret;
- ret = NULL;
-
- return 0;
-}
-
-int device_copy_properties(sd_device *device_dst, sd_device *device_src) {
- const char *property, *value;
- int r;
-
- assert(device_dst);
- assert(device_src);
-
- FOREACH_DEVICE_PROPERTY(device_src, property, value) {
- r = device_add_property(device_dst, property, value);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-void device_cleanup_tags(sd_device *device) {
- assert(device);
-
- set_free_free(device->tags);
- device->tags = NULL;
- device->property_tags_outdated = true;
- device->tags_generation ++;
-}
-
-void device_cleanup_devlinks(sd_device *device) {
- assert(device);
-
- set_free_free(device->devlinks);
- device->devlinks = NULL;
- device->property_devlinks_outdated = true;
- device->devlinks_generation ++;
-}
-
-void device_remove_tag(sd_device *device, const char *tag) {
- assert(device);
- assert(tag);
-
- free(set_remove(device->tags, tag));
- device->property_tags_outdated = true;
- device->tags_generation ++;
-}
-
-static int device_tag(sd_device *device, const char *tag, bool add) {
- const char *id;
- char *path;
- int r;
-
- assert(device);
- assert(tag);
-
- r = device_get_id_filename(device, &id);
- if (r < 0)
- return r;
-
- path = strjoina("/run/udev/tags/", tag, "/", id);
-
- if (add) {
- r = touch_file(path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, 0444);
- if (r < 0)
- return r;
- } else {
- r = unlink(path);
- if (r < 0 && errno != ENOENT)
- return -errno;
- }
-
- return 0;
-}
-
-int device_tag_index(sd_device *device, sd_device *device_old, bool add) {
- const char *tag;
- int r = 0, k;
-
- if (add && device_old) {
- /* delete possible left-over tags */
- FOREACH_DEVICE_TAG(device_old, tag) {
- if (!sd_device_has_tag(device, tag)) {
- k = device_tag(device_old, tag, false);
- if (r >= 0 && k < 0)
- r = k;
- }
- }
- }
-
- FOREACH_DEVICE_TAG(device, tag) {
- k = device_tag(device, tag, add);
- if (r >= 0 && k < 0)
- r = k;
- }
-
- return r;
-}
-
-static bool device_has_info(sd_device *device) {
- assert(device);
-
- if (!set_isempty(device->devlinks))
- return true;
-
- if (device->devlink_priority != 0)
- return true;
-
- if (!ordered_hashmap_isempty(device->properties_db))
- return true;
-
- if (!set_isempty(device->tags))
- return true;
-
- if (device->watch_handle >= 0)
- return true;
-
- return false;
-}
-
-void device_set_db_persist(sd_device *device) {
- assert(device);
-
- device->db_persist = true;
-}
-
-int device_update_db(sd_device *device) {
- const char *id;
- char *path;
- _cleanup_fclose_ FILE *f = NULL;
- _cleanup_free_ char *path_tmp = NULL;
- bool has_info;
- int r;
-
- assert(device);
-
- has_info = device_has_info(device);
-
- r = device_get_id_filename(device, &id);
- if (r < 0)
- return r;
-
- path = strjoina("/run/udev/data/", id);
-
- /* do not store anything for otherwise empty devices */
- if (!has_info && major(device->devnum) == 0 && device->ifindex == 0) {
- r = unlink(path);
- if (r < 0 && errno != ENOENT)
- return -errno;
-
- return 0;
- }
-
- /* write a database file */
- r = mkdir_parents(path, 0755);
- if (r < 0)
- return r;
-
- r = fopen_temporary(path, &f, &path_tmp);
- if (r < 0)
- return r;
-
- /*
- * set 'sticky' bit to indicate that we should not clean the
- * database when we transition from initramfs to the real root
- */
- if (device->db_persist) {
- r = fchmod(fileno(f), 01644);
- if (r < 0) {
- r = -errno;
- goto fail;
- }
- } else {
- r = fchmod(fileno(f), 0644);
- if (r < 0) {
- r = -errno;
- goto fail;
- }
- }
-
- if (has_info) {
- const char *property, *value, *tag;
- Iterator i;
-
- if (major(device->devnum) > 0) {
- const char *devlink;
-
- FOREACH_DEVICE_DEVLINK(device, devlink)
- fprintf(f, "S:%s\n", devlink + strlen("/dev/"));
-
- if (device->devlink_priority != 0)
- fprintf(f, "L:%i\n", device->devlink_priority);
-
- if (device->watch_handle >= 0)
- fprintf(f, "W:%i\n", device->watch_handle);
- }
-
- if (device->usec_initialized > 0)
- fprintf(f, "I:"USEC_FMT"\n", device->usec_initialized);
-
- ORDERED_HASHMAP_FOREACH_KEY(value, property, device->properties_db, i)
- fprintf(f, "E:%s=%s\n", property, value);
-
- FOREACH_DEVICE_TAG(device, tag)
- fprintf(f, "G:%s\n", tag);
- }
-
- r = fflush_and_check(f);
- if (r < 0)
- goto fail;
-
- r = rename(path_tmp, path);
- if (r < 0) {
- r = -errno;
- goto fail;
- }
-
- log_debug("created %s file '%s' for '%s'", has_info ? "db" : "empty",
- path, device->devpath);
-
- return 0;
-
-fail:
- log_error_errno(r, "failed to create %s file '%s' for '%s'", has_info ? "db" : "empty",
- path, device->devpath);
- unlink(path);
- unlink(path_tmp);
-
- return r;
-}
-
-int device_delete_db(sd_device *device) {
- const char *id;
- char *path;
- int r;
-
- assert(device);
-
- r = device_get_id_filename(device, &id);
- if (r < 0)
- return r;
-
- path = strjoina("/run/udev/data/", id);
-
- r = unlink(path);
- if (r < 0 && errno != ENOENT)
- return -errno;
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff