chiark / gitweb /
udevadm: info - resolve devpath if symlink is given
authorKay Sievers <kay.sievers@vrfy.org>
Sat, 29 Mar 2008 15:12:41 +0000 (16:12 +0100)
committerKay Sievers <kay.sievers@vrfy.org>
Sat, 29 Mar 2008 15:12:41 +0000 (16:12 +0100)
udev_db.c
udevinfo.c

index 29aa031..518ace9 100644 (file)
--- a/udev_db.c
+++ b/udev_db.c
@@ -37,7 +37,7 @@ static size_t devpath_to_db_path(const char *devpath, char *filename, size_t len
 {
        size_t start;
 
-       /* add location of db files */
+       /* translate to location of db file */
        strlcpy(filename, udev_root, len);
        start = strlcat(filename, "/"DB_DIR"/", len);
        strlcat(filename, devpath, len);
index 948aacc..85899cf 100644 (file)
@@ -281,6 +281,7 @@ int udevinfo(int argc, char *argv[], char *envp[])
                                strlcpy(name, &optarg[strlen(udev_root)+1], sizeof(name));
                        else
                                strlcpy(name, optarg, sizeof(name));
+                       remove_trailing_chars(name, '/');
                        dbg("name: %s", name);
                        break;
                case 'p':
@@ -289,6 +290,27 @@ int udevinfo(int argc, char *argv[], char *envp[])
                                strlcpy(path, &optarg[strlen(sysfs_path)], sizeof(path));
                        else
                                strlcpy(path, optarg, sizeof(path));
+                       remove_trailing_chars(path, '/');
+
+                       /* possibly resolve to real devpath */
+                       if (sysfs_resolve_link(path, sizeof(path)) != 0) {
+                               char temp[PATH_SIZE];
+                               char *pos;
+
+                               /* also check if the parent is a link */
+                               strlcpy(temp, path, sizeof(temp));
+                               pos = strrchr(temp, '/');
+                               if (pos != 0) {
+                                       char tail[PATH_SIZE];
+
+                                       strlcpy(tail, pos, sizeof(tail));
+                                       pos[0] = '\0';
+                                       if (sysfs_resolve_link(temp, sizeof(temp)) == 0) {
+                                               strlcpy(path, temp, sizeof(path));
+                                               strlcat(path, tail, sizeof(path));
+                                       }
+                               }
+                       }
                        dbg("path: %s", path);
                        break;
                case 'q':