[PATCH] Better error reporting for "git status"

[git.git] / read-cache.c

diff --git a/read-cache.c b/read-cache.c
index 0e345bd..d2aebdd 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -464,11 +464,15 @@ int read_cache(void)
 
        errno = EBUSY;
        if (active_cache)
-               return error("more than one cachefile");
+               return active_nr;
+
        errno = ENOENT;
        fd = open(get_index_file(), O_RDONLY);
-       if (fd < 0)
-               return (errno == ENOENT) ? 0 : error("open failed");
+       if (fd < 0) {
+               if (errno == ENOENT)
+                       return 0;
+               die("index file open failed (%s)", strerror(errno));
+       }
 
        size = 0; // avoid gcc warning
        map = MAP_FAILED;
@@ -480,7 +484,7 @@ int read_cache(void)
        }
        close(fd);
        if (map == MAP_FAILED)
-               return error("mmap failed");
+               die("index file mmap failed (%s)", strerror(errno));
 
        hdr = map;
        if (verify_hdr(hdr, size) < 0)
@@ -501,7 +505,7 @@ int read_cache(void)
 unmap:
        munmap(map, size);
        errno = EINVAL;
-       return error("verify header failed");
+       die("index file corrupt");
 }
 
 #define WRITE_BUFFER_SIZE 8192