peel_ref: do not return a null sha1

diff --git a/sha1_file.c b/sha1_file.c
index 4ccaf7ac197c28400eddd496abcfc725528ca32b..9152974642986de2307ec4ed6beda4efa49e8383 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -298,7 +298,7 @@ static int link_alt_odb_entry(const char * entry, int len, const char * relative
                        return -1;
                }
        }
-       if (!memcmp(ent->base, objdir, pfxlen)) {
+       if (!strcmp(ent->base, objdir)) {
                free(ent);
                return -1;
        }
@@ -731,6 +731,24 @@ void free_pack_by_name(const char *pack_name)
        }
 }
 
+static unsigned int get_max_fd_limit(void)
+{
+#ifdef RLIMIT_NOFILE
+       struct rlimit lim;
+
+       if (getrlimit(RLIMIT_NOFILE, &lim))
+               die_errno("cannot get RLIMIT_NOFILE");
+
+       return lim.rlim_cur;
+#elif defined(_SC_OPEN_MAX)
+       return sysconf(_SC_OPEN_MAX);
+#elif defined(OPEN_MAX)
+       return OPEN_MAX;
+#else
+       return 1; /* see the caller ;-) */
+#endif
+}
+
 /*
  * Do not call this directly as this leaks p->pack_fd on error return;
  * call open_packed_git() instead.
@@ -747,13 +765,7 @@ static int open_packed_git_1(struct packed_git *p)
                return error("packfile %s index unavailable", p->pack_name);
 
        if (!pack_max_fds) {
-               struct rlimit lim;
-               unsigned int max_fds;
-
-               if (getrlimit(RLIMIT_NOFILE, &lim))
-                       die_errno("cannot get RLIMIT_NOFILE");
-
-               max_fds = lim.rlim_cur;
+               unsigned int max_fds = get_max_fd_limit();
 
                /* Save 3 for stdin/stdout/stderr, 22 for work */
                if (25 < max_fds)