#include "path-util.h"
#include "conf-files.h"
#include "strbuf.h"
+#include "strv.h"
#define PREALLOC_TOKEN 2048
unsigned int token_cur;
unsigned int token_max;
- /* all key strings are copied and de-duplicated in a single continous string buffer */
+ /* all key strings are copied and de-duplicated in a single continuous string buffer */
struct strbuf *strbuf;
/* during rule parsing, uid/gid lookup results are cached */
TK_A_OWNER_ID, /* uid_t */
TK_A_GROUP_ID, /* gid_t */
TK_A_MODE_ID, /* mode_t */
+ TK_A_TAG, /* val */
TK_A_STATIC_NODE, /* val */
TK_A_ENV, /* val, attr */
- TK_A_TAG, /* val */
TK_A_NAME, /* val */
TK_A_DEVLINK, /* val */
TK_A_ATTR, /* val, attr */
log_debug("updating devpath from '%s' to '%s'\n",
udev_device_get_devpath(dev), val);
- util_strscpyl(syspath, sizeof(syspath), "/sys", val, NULL);
+ strscpyl(syspath, sizeof(syspath), "/sys", val, NULL);
udev_device_set_syspath(dev, syspath);
} else {
struct udev_list_entry *entry;
/* a relative path is a device attribute */
devicepath[0] = '\0';
if (file[0] != '/') {
- util_strscpyl(devicepath, sizeof(devicepath), udev_device_get_syspath(dev), NULL);
- util_strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL);
+ strscpyl(devicepath, sizeof(devicepath), udev_device_get_syspath(dev), NULL);
+ strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL);
file = filepath;
}
const char *tail;
DIR *dir;
- util_strscpy(dirname, sizeof(dirname), attr);
+ strscpy(dirname, sizeof(dirname), attr);
pos = strstr(dirname, "/*/");
if (pos == NULL)
return -1;
if (dent->d_name[0] == '.')
continue;
- util_strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL);
+ strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL);
if (stat(attr, &stats) == 0) {
found = true;
break;
char *value;
enum operation_type op;
- if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
+ if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) {
+ /* If we aren't at the end of the line, this is a parsing error.
+ * Make a best effort to describe where the problem is. */
+ if (*linepos != '\n')
+ log_error("invalid key/value pair in file %s on line %u,"
+ "starting at character %lu\n",
+ filename, lineno, linepos - line + 1);
break;
+ }
if (streq(key, "ACTION")) {
if (op > OP_MATCH_MAX) {
}
strv_uniq(rules->dirs);
- rules->dirs_ts_usec = calloc(strv_length(rules->dirs), sizeof(long long));
+ rules->dirs_ts_usec = calloc(strv_length(rules->dirs), sizeof(usec_t));
if(!rules->dirs_ts_usec)
return udev_rules_unref(rules);
udev_rules_check_timestamp(rules);
- r = conf_files_list_strv(&files, ".rules", (const char **)rules->dirs);
+ r = conf_files_list_strv(&files, ".rules", NULL, (const char **)rules->dirs);
if (r < 0) {
log_error("failed to enumerate rules files: %s\n", strerror(-r));
return udev_rules_unref(rules);
if (next != NULL) {
size_t matchlen = (size_t)(next - s);
- match = (matchlen == len && strncmp(s, val, matchlen) == 0);
+ match = (matchlen == len && strneq(s, val, matchlen));
if (match)
break;
} else {
{
char value[UTIL_PATH_SIZE];
- util_strscpy(value, sizeof(value), rules_str(rules, token->key.value_off));
+ strscpy(value, sizeof(value), rules_str(rules, token->key.value_off));
key_value = value;
while (key_value != NULL) {
pos = strchr(key_value, '|');
klen = strlen(key_value);
if (klen > 0 && !isspace(key_value[klen-1])) {
if (value != vbuf) {
- util_strscpy(vbuf, sizeof(vbuf), value);
+ strscpy(vbuf, sizeof(vbuf), value);
value = vbuf;
}
while (len > 0 && isspace(vbuf[--len]))
if (filename[0] != '/') {
char tmp[UTIL_PATH_SIZE];
- util_strscpy(tmp, sizeof(tmp), filename);
- util_strscpyl(filename, sizeof(filename),
+ strscpy(tmp, sizeof(tmp), filename);
+ strscpyl(filename, sizeof(filename),
udev_device_get_syspath(event->dev), "/", tmp, NULL);
}
}
/* append value separated by space */
udev_event_apply_format(event, value, temp, sizeof(temp));
- util_strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL);
+ strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL);
} else
udev_event_apply_format(event, value, value_new, sizeof(value_new));
next[0] = '\0';
log_debug("LINK '%s' %s:%u\n", pos,
rules_str(rules, rule->rule.filename_off), rule->rule.filename_line);
- util_strscpyl(filename, sizeof(filename), "/dev/", pos, NULL);
+ strscpyl(filename, sizeof(filename), "/dev/", pos, NULL);
udev_device_add_devlink(event->dev, filename);
while (isspace(next[1]))
next++;
if (pos[0] != '\0') {
log_debug("LINK '%s' %s:%u\n", pos,
rules_str(rules, rule->rule.filename_off), rule->rule.filename_line);
- util_strscpyl(filename, sizeof(filename), "/dev/", pos, NULL);
+ strscpyl(filename, sizeof(filename), "/dev/", pos, NULL);
udev_device_add_devlink(event->dev, filename);
}
break;
FILE *f;
if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0)
- util_strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL);
+ strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL);
attr_subst_subdir(attr, sizeof(attr));
udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value));
}
}
-void udev_rules_apply_static_dev_perms(struct udev_rules *rules)
+int udev_rules_apply_static_dev_perms(struct udev_rules *rules)
{
struct token *cur;
struct token *rule;
uid_t uid = 0;
gid_t gid = 0;
mode_t mode = 0;
+ _cleanup_strv_free_ char **tags = NULL;
+ char **t;
+ FILE *f = NULL;
+ _cleanup_free_ char *path = NULL;
+ int r = 0;
if (rules->tokens == NULL)
- return;
+ return 0;
cur = &rules->tokens[0];
rule = cur;
uid = 0;
gid = 0;
mode = 0;
+ strv_free(tags);
+ tags = NULL;
break;
case TK_A_OWNER_ID:
uid = cur->key.uid;
break;
case TK_A_MODE_ID:
mode = cur->key.mode;
+ break;
+ case TK_A_TAG:
+ r = strv_extend(&tags, rules_str(rules, cur->key.value_off));
+ if (r < 0)
+ goto finish;
+
break;
case TK_A_STATIC_NODE: {
- char filename[UTIL_PATH_SIZE];
+ char device_node[UTIL_PATH_SIZE];
+ char tags_dir[UTIL_PATH_SIZE];
+ char tag_symlink[UTIL_PATH_SIZE];
struct stat stats;
/* we assure, that the permissions tokens are sorted before the static token */
- if (mode == 0 && uid == 0 && gid == 0)
+ if (mode == 0 && uid == 0 && gid == 0 && tags == NULL)
goto next;
- util_strscpyl(filename, sizeof(filename), "/dev/", rules_str(rules, cur->key.value_off), NULL);
- if (stat(filename, &stats) != 0)
+ strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL);
+ if (stat(device_node, &stats) != 0)
goto next;
if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode))
goto next;
+
+ if (tags) {
+ /* Export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */
+
+ STRV_FOREACH(t, tags) {
+ _cleanup_free_ char *unescaped_filename = NULL;
+
+ strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL);
+ r = mkdir_p(tags_dir, 0755);
+ if (r < 0) {
+ log_error("failed to create %s: %s\n", tags_dir, strerror(-r));
+ return r;
+ }
+
+ unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/.");
+
+ strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL);
+ r = symlink(device_node, tag_symlink);
+ if (r < 0 && errno != EEXIST) {
+ log_error("failed to create symlink %s -> %s: %s\n", tag_symlink, device_node, strerror(errno));
+ return -errno;
+ } else
+ r = 0;
+ }
+ }
+
+ /* don't touch the permissions if only the tags were set */
+ if (mode == 0 && uid == 0 && gid == 0)
+ goto next;
+
if (mode == 0) {
if (gid > 0)
mode = 0660;
mode = 0600;
}
if (mode != (stats.st_mode & 01777)) {
- chmod(filename, mode);
- log_debug("chmod '%s' %#o\n", filename, mode);
+ r = chmod(device_node, mode);
+ if (r < 0) {
+ log_error("failed to chmod '%s' %#o\n", device_node, mode);
+ return -errno;
+ } else
+ log_debug("chmod '%s' %#o\n", device_node, mode);
}
if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) {
- chown(filename, uid, gid);
- log_debug("chown '%s' %u %u\n", filename, uid, gid);
+ r = chown(device_node, uid, gid);
+ if (r < 0) {
+ log_error("failed to chown '%s' %u %u \n", device_node, uid, gid);
+ return -errno;
+ } else
+ log_debug("chown '%s' %u %u\n", device_node, uid, gid);
}
- utimensat(AT_FDCWD, filename, NULL, 0);
+ utimensat(AT_FDCWD, device_node, NULL, 0);
break;
}
case TK_END:
- return;
+ goto finish;
}
cur++;
cur = rule + rule->rule.token_count;
continue;
}
+
+finish:
+ if (f) {
+ fflush(f);
+ fchmod(fileno(f), 0644);
+ if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) {
+ r = -errno;
+ unlink("/run/udev/static_node-tags");
+ unlink(path);
+ }
+ fclose(f);
+ }
+
+ return r;
}
~ianmdlvl / elogind.git / blobdiff