util/cutils: Skip "." when looking for next directory component

When looking for the next directory component, a "." component is now skipped.

This fixes the path(s) used for firmware lookup for the prefix == bindir case
which is standard for QEMU on Windows and where the internally
used bindir value ends with "/.".

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Message-Id: <20210208205752.2488774-1-sw@weilnetz.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/util/cutils.c b/util/cutils.c
index 0b5073b..70c7d6e 100644 (file)
--- a/util/cutils.c
+++ b/util/cutils.c
@@ -916,7 +916,8 @@ static inline bool starts_with_prefix(const char *dir)
 static inline const char *next_component(const char *dir, int *p_len)
 {
     int len;
-    while (*dir && G_IS_DIR_SEPARATOR(*dir)) {
+    while ((*dir && G_IS_DIR_SEPARATOR(*dir)) ||
+           (*dir == '.' && (G_IS_DIR_SEPARATOR(dir[1]) || dir[1] == '\0'))) {
         dir++;
     }
     len = 0;