fix glob descent into . and .. with GLOB_PERIOD

GLOB_PERIOD is a gnu extension, and GNU glob does not seem to honor it
except in the last path component. it's not clear whether this a bug
or intentional, but it seems reasonable that it should exclude the
special entries . and .. when walking.

changes based on report and analysis by Julien Ramseier.

diff --git a/src/regex/glob.c b/src/regex/glob.c
index 2d4d562..6f8425c 100644 (file)
--- a/src/regex/glob.c
+++ b/src/regex/glob.c
@@ -100,6 +100,10 @@ static int match_in_dir(const char *d, const char *p, int flags, int (*errfunc)(
                        continue;
                if (p2 && de->d_type && !S_ISDIR(de->d_type<<12) && !S_ISLNK(de->d_type<<12))
                        continue;
+               if (p2 && de->d_name[0]=='.' && !de->d_name[1])
+                       continue;
+               if (p2 && de->d_name[0]=='.' && de->d_name[1]=='.' && !de->d_name[2])
+                       continue;
                if (*d) {
                        memcpy(name, d, l);
                        name[l] = '/';