hwdb: remove support for (not fully implemented) conditional properties

[elogind.git] / src / udev / udevadm-hwdb.c

diff --git a/src/udev/udevadm-hwdb.c b/src/udev/udevadm-hwdb.c
index 1e80b0d611c573b0a4098044195f497b1282d8fd..10b490ee2ba666fcb957538816c68c18541ac96c 100644 (file)
--- a/src/udev/udevadm-hwdb.c
+++ b/src/udev/udevadm-hwdb.c
@@ -84,14 +84,12 @@ static int trie_children_cmp(const void *v1, const void *v2) {
 
 static int node_add_child(struct trie *trie, struct trie_node *node, struct trie_node *node_child, uint8_t c) {
         struct trie_child_entry *child;
-        int err = 0;
 
         /* extend array, add new entry, sort for bisection */
         child = realloc(node->children, (node->children_count + 1) * sizeof(struct trie_child_entry));
-        if (!child) {
-                err = -ENOMEM;
-                goto out;
-        }
+        if (!child)
+                return -ENOMEM;
+
         node->children = child;
         trie->children_count++;
         node->children[node->children_count].c = c;
@@ -99,8 +97,8 @@ static int node_add_child(struct trie *trie, struct trie_node *node, struct trie
         node->children_count++;
         qsort(node->children, node->children_count, sizeof(struct trie_child_entry), trie_children_cmp);
         trie->nodes_count++;
-out:
-        return err;
+
+        return 0;
 }
 
 static struct trie_node *node_lookup(const struct trie_node *node, uint8_t c) {
@@ -176,53 +174,51 @@ static int trie_insert(struct trie *trie, struct trie_node *node, const char *se
                        const char *key, const char *value) {
         size_t i = 0;
         int err = 0;
-        struct trie_node _cleanup_free_ *child = NULL;
 
         for (;;) {
                 size_t p;
                 uint8_t c;
+                struct trie_node *child;
 
                 for (p = 0; (c = trie->strings->buf[node->prefix_off + p]); p++) {
-                        char *s;
+                        _cleanup_free_ char *s = NULL;
                         ssize_t off;
+                        _cleanup_free_ struct trie_node *new_child = NULL;
 
                         if (c == search[i + p])
                                 continue;
 
                         /* split node */
-                        child = calloc(sizeof(struct trie_node), 1);
-                        if (!child) {
-                                err = -ENOMEM;
-                                goto out;
-                        }
+                        new_child = calloc(sizeof(struct trie_node), 1);
+                        if (!new_child)
+                                return -ENOMEM;
 
                         /* move values from parent to child */
-                        child->prefix_off = node->prefix_off + p+1;
-                        child->children = node->children;
-                        child->children_count = node->children_count;
-                        child->values = node->values;
-                        child->values_count = node->values_count;
+                        new_child->prefix_off = node->prefix_off + p+1;
+                        new_child->children = node->children;
+                        new_child->children_count = node->children_count;
+                        new_child->values = node->values;
+                        new_child->values_count = node->values_count;
 
                         /* update parent; use strdup() because the source gets realloc()d */
                         s = strndup(trie->strings->buf + node->prefix_off, p);
-                        if (!s) {
-                                err = -ENOMEM;
-                                goto out;
-                        }
+                        if (!s)
+                                return -ENOMEM;
+
                         off = strbuf_add_string(trie->strings, s, p);
-                        free(s);
-                        if (off < 0) {
-                                err = off;
-                                goto out;
-                        }
+                        if (off < 0)
+                                return off;
+
                         node->prefix_off = off;
                         node->children = NULL;
                         node->children_count = 0;
                         node->values = NULL;
                         node->values_count = 0;
-                        err = node_add_child(trie, node, child, c);
+                        err = node_add_child(trie, node, new_child, c);
                         if (err)
-                                goto out;
+                                return err;
+
+                        new_child = NULL; /* avoid cleanup */
                         break;
                 }
                 i += p;
@@ -237,28 +233,28 @@ static int trie_insert(struct trie *trie, struct trie_node *node, const char *se
 
                         /* new child */
                         child = calloc(sizeof(struct trie_node), 1);
-                        if (!child) {
-                                err = -ENOMEM;
-                                goto out;
-                        }
+                        if (!child)
+                                return -ENOMEM;
+
                         off = strbuf_add_string(trie->strings, search + i+1, strlen(search + i+1));
                         if (off < 0) {
-                                err = off;
-                                goto out;
+                                free(child);
+                                return off;
                         }
+
                         child->prefix_off = off;
                         err = node_add_child(trie, node, child, c);
-                        if (err)
-                                goto out;
+                        if (err) {
+                                free(child);
+                                return err;
+                        }
+
                         return trie_node_add_value(trie, child, key, value);
                 }
 
                 node = child;
-                child = NULL; /* avoid cleanup */
                 i++;
         }
-out:
-        return err;
 }
 
 struct trie_f {
@@ -410,14 +406,12 @@ static int import_file(struct trie *trie, const char *filename) {
         FILE *f;
         char line[LINE_MAX];
         char match[LINE_MAX];
-        char cond[LINE_MAX];
 
         f = fopen(filename, "re");
         if (f == NULL)
                 return -errno;
 
         match[0] = '\0';
-        cond[0] = '\0';
         while (fgets(line, sizeof(line), f)) {
                 size_t len;
 
@@ -427,7 +421,6 @@ static int import_file(struct trie *trie, const char *filename) {
                 /* new line, new record */
                 if (line[0] == '\n') {
                         match[0] = '\0';
-                        cond[0] = '\0';
                         continue;
                 }
 
@@ -440,20 +433,10 @@ static int import_file(struct trie *trie, const char *filename) {
                 /* start of new record */
                 if (match[0] == '\0') {
                         strcpy(match, line);
-                        cond[0] = '\0';
-                        continue;
-                }
-
-                if (line[0] == '+') {
-                        strcpy(cond, line);
                         continue;
                 }
 
-                /* TODO: support +; skip the entire record until we support it */
-                if (cond[0] != '\0')
-                        continue;
-
-                /* value lines */
+                /* value line */
                 if (line[0] == ' ') {
                         char *value;
 
@@ -463,7 +446,10 @@ static int import_file(struct trie *trie, const char *filename) {
                         value[0] = '\0';
                         value++;
                         trie_insert(trie, trie->root, match, line, value);
+                        continue;
                 }
+
+                log_error("Error parsing line '%s' in '%s\n", line, filename);
         }
         fclose(f);
         return 0;