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authorKay Sievers <kay@vrfy.org>2013-07-10 14:59:24 +0200
committerKay Sievers <kay@vrfy.org>2013-07-10 15:05:05 +0200
commit06639c0940ad9a81f085cbaff05bbf3f69a7f88f (patch)
tree28355c467b145ec620d2cec1b76488d5cdad9fde /src/udev/udevadm-hwdb.c
parentf09114bcc7dc9d4699e6ae41150056256bfbabb2 (diff)
hwdb: allow list of lookup keys per given record
This allows to specify: dmi:bvn*:bvr*:bd*:svnVENDOR:pn:Model 231*:pvr* dmi:bvn*:bvr*:bd*:svnVENDOR:pn:Series 12*:pvr* KEY_A=value KEY_B=value Instead of: dmi:bvn*:bvr*:bd*:svnVENDOR:pn:Model 231*:pvr* KEY_A=value KEY_B=value dmi:bvn*:bvr*:bd*:svnVENDOR:pn:Series 12*:pvr* KEY_A=value KEY_B=value
Diffstat (limited to 'src/udev/udevadm-hwdb.c')
-rw-r--r--src/udev/udevadm-hwdb.c127
1 files changed, 97 insertions, 30 deletions
diff --git a/src/udev/udevadm-hwdb.c b/src/udev/udevadm-hwdb.c
index 10b490ee2b..4136b17be5 100644
--- a/src/udev/udevadm-hwdb.c
+++ b/src/udev/udevadm-hwdb.c
@@ -21,6 +21,7 @@
#include <unistd.h>
#include <getopt.h>
#include <string.h>
+#include <ctype.h>
#include "util.h"
#include "strbuf.h"
@@ -402,56 +403,122 @@ out:
return err;
}
-static int import_file(struct trie *trie, const char *filename) {
+static int insert_data(struct trie *trie, struct udev_list *match_list,
+ char *line, const char *filename) {
+ char *value;
+ struct udev_list_entry *entry;
+
+ value = strchr(line, '=');
+ if (!value) {
+ log_error("Error, key/value pair expected but got '%s' in '%s':\n", line, filename);
+ return -EINVAL;
+ }
+
+ value[0] = '\0';
+ value++;
+
+ if (line[0] == '\0' || value[0] == '\0') {
+ log_error("Error, empty key or value '%s' in '%s':\n", line, filename);
+ return -EINVAL;
+ }
+
+ udev_list_entry_foreach(entry, udev_list_get_entry(match_list))
+ trie_insert(trie, trie->root, udev_list_entry_get_name(entry), line, value);
+
+ return 0;
+}
+
+static int import_file(struct udev *udev, struct trie *trie, const char *filename) {
+ enum {
+ HW_MATCH,
+ HW_DATA,
+ HW_NONE,
+ } state = HW_NONE;
FILE *f;
char line[LINE_MAX];
- char match[LINE_MAX];
+ struct udev_list match_list;
+
+ udev_list_init(udev, &match_list, false);
f = fopen(filename, "re");
if (f == NULL)
return -errno;
- match[0] = '\0';
while (fgets(line, sizeof(line), f)) {
size_t len;
+ char *pos;
+ /* comment line */
if (line[0] == '#')
continue;
- /* new line, new record */
- if (line[0] == '\n') {
- match[0] = '\0';
- continue;
- }
+ /* strip trailing comment */
+ pos = strchr(line, '#');
+ if (pos)
+ pos[0] = '\0';
- /* remove newline */
+ /* strip trailing whitespace */
len = strlen(line);
- if (len < 2)
- continue;
- line[len-1] = '\0';
+ while (len > 0 && isspace(line[len-1]))
+ len--;
+ line[len] = '\0';
+
+ switch (state) {
+ case HW_NONE:
+ if (len == 0)
+ break;
+
+ if (line[0] == ' ') {
+ log_error("Error, MATCH expected but got '%s' in '%s':\n", line, filename);
+ break;
+ }
- /* start of new record */
- if (match[0] == '\0') {
- strcpy(match, line);
- continue;
- }
+ /* start of record, first match */
+ state = HW_MATCH;
+ udev_list_entry_add(&match_list, line, NULL);
+ break;
- /* value line */
- if (line[0] == ' ') {
- char *value;
+ case HW_MATCH:
+ if (len == 0) {
+ log_error("Error, DATA expected but got empty line in '%s':\n", filename);
+ state = HW_NONE;
+ udev_list_cleanup(&match_list);
+ break;
+ }
- value = strchr(line, '=');
- if (!value)
- continue;
- value[0] = '\0';
- value++;
- trie_insert(trie, trie->root, match, line, value);
- continue;
- }
+ /* another match */
+ if (line[0] != ' ') {
+ udev_list_entry_add(&match_list, line, NULL);
+ break;
+ }
+
+ /* first data */
+ state = HW_DATA;
+ insert_data(trie, &match_list, line, filename);
+ break;
+
+ case HW_DATA:
+ /* end of record */
+ if (len == 0) {
+ state = HW_NONE;
+ udev_list_cleanup(&match_list);
+ break;
+ }
+
+ if (line[0] != ' ') {
+ log_error("Error, DATA expected but got '%s' in '%s':\n", line, filename);
+ state = HW_NONE;
+ udev_list_cleanup(&match_list);
+ break;
+ }
- log_error("Error parsing line '%s' in '%s\n", line, filename);
+ insert_data(trie, &match_list, line, filename);
+ break;
+ };
}
+
fclose(f);
+ udev_list_cleanup(&match_list);
return 0;
}
@@ -539,7 +606,7 @@ static int adm_hwdb(struct udev *udev, int argc, char *argv[]) {
}
STRV_FOREACH(f, files) {
log_debug("reading file '%s'", *f);
- import_file(trie, *f);
+ import_file(udev, trie, *f);
}
strv_free(files);