git-pull: allow pulling into an empty repository

diff --git a/refs.c b/refs.c
index 75a0d7b064618539e7bbe94d81b913beb4314dd5..f003a0b1080267b419296b3b37312b858b8b215d 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -731,10 +731,20 @@ static int log_ref_write(struct ref_lock *lock,
 
        logfd = open(lock->log_file, oflags, 0666);
        if (logfd < 0) {
-               if (!log_all_ref_updates && errno == ENOENT)
+               if (!(oflags & O_CREAT) && errno == ENOENT)
                        return 0;
-               return error("Unable to append to %s: %s",
-                       lock->log_file, strerror(errno));
+
+               if ((oflags & O_CREAT) && errno == EISDIR) {
+                       if (remove_empty_directories(lock->log_file)) {
+                               return error("There are still logs under '%s'",
+                                            lock->log_file);
+                       }
+                       logfd = open(lock->log_file, oflags, 0666);
+               }
+
+               if (logfd < 0)
+                       return error("Unable to append to %s: %s",
+                                    lock->log_file, strerror(errno));
        }
 
        committer = git_committer_info(1);
@@ -796,7 +806,7 @@ int write_ref_sha1(struct ref_lock *lock,
        return 0;
 }
 
-int read_ref_at(const char *ref, unsigned long at_time, unsigned char *sha1)
+int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1)
 {
        const char *logfile, *logdata, *logend, *rec, *lastgt, *lastrec;
        char *tz_c;
@@ -829,7 +839,7 @@ int read_ref_at(const char *ref, unsigned long at_time, unsigned char *sha1)
                if (!lastgt)
                        die("Log %s is corrupt.", logfile);
                date = strtoul(lastgt + 1, &tz_c, 10);
-               if (date <= at_time) {
+               if (date <= at_time || cnt == 0) {
                        if (lastrec) {
                                if (get_sha1_hex(lastrec, logged_sha1))
                                        die("Log %s is corrupt.", logfile);
@@ -860,6 +870,8 @@ int read_ref_at(const char *ref, unsigned long at_time, unsigned char *sha1)
                        return 0;
                }
                lastrec = rec;
+               if (cnt > 0)
+                       cnt--;
        }
 
        rec = logdata;