udevadm: info - resolve devpath if symlink is given

[elogind.git] / udevinfo.c

diff --git a/udevinfo.c b/udevinfo.c
index 948aaccc36f95eeb5d436da1d232b9bb35ffe5ed..85899cfd9d9d9d303b9ff033fd36a1278cc8a843 100644 (file)
--- a/udevinfo.c
+++ b/udevinfo.c
@@ -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':