fast-import: don't allow to note on empty branch

diff --git a/csum-file.h b/csum-file.h
index 72c9487f4fd9fcab5e02fc2dc6afd3cb7f9c036a..6a7967c6bf604076c7d68ce139f65f34df3bc30e 100644 (file)
--- a/csum-file.h
+++ b/csum-file.h
@@ -6,8 +6,9 @@ struct progress;
 /* A SHA1-protected file */
 struct sha1file {
        int fd;
+       int check_fd;
        unsigned int offset;
-       SHA_CTX ctx;
+       git_SHA_CTX ctx;
        off_t total;
        struct progress *tp;
        const char *name;
@@ -21,9 +22,11 @@ struct sha1file {
 #define CSUM_FSYNC     2
 
 extern struct sha1file *sha1fd(int fd, const char *name);
+extern struct sha1file *sha1fd_check(const char *name);
 extern struct sha1file *sha1fd_throughput(int fd, const char *name, struct progress *tp);
 extern int sha1close(struct sha1file *, unsigned char *, unsigned int);
 extern int sha1write(struct sha1file *, void *, unsigned int);
+extern void sha1flush(struct sha1file *f);
 extern void crc32_begin(struct sha1file *);
 extern uint32_t crc32_end(struct sha1file *);