sha1_file: consolidate code to close a pack's file descriptor

There was a lot of repeated code to close the file descriptor of
a given pack. Let's just refactor this code into a single function.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/sha1_file.c b/sha1_file.c
index 99155c0d6b77aa2a772330d51fa604b1c4a9b0cf..18922b435ebd82f95b495a40b76c4ceb15416dc0 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -753,6 +753,18 @@ void close_pack_windows(struct packed_git *p)
        }
 }
 
+static int close_pack_fd(struct packed_git *p)
+{
+       if (p->pack_fd < 0)
+               return 0;
+
+       close(p->pack_fd);
+       pack_open_fds--;
+       p->pack_fd = -1;
+
+       return 1;
+}
+
 /*
  * The LRU pack is the one with the oldest MRU window, preferring packs
  * with no used windows, or the oldest mtime if it has no windows allocated.
@@ -820,12 +832,8 @@ static int close_one_pack(void)
                find_lru_pack(p, &lru_p, &mru_w, &accept_windows_inuse);
        }
 
-       if (lru_p) {
-               close(lru_p->pack_fd);
-               pack_open_fds--;
-               lru_p->pack_fd = -1;
-               return 1;
-       }
+       if (lru_p)
+               return close_pack_fd(lru_p);
 
        return 0;
 }
@@ -866,10 +874,7 @@ void free_pack_by_name(const char *pack_name)
                if (strcmp(pack_name, p->pack_name) == 0) {
                        clear_delta_base_cache();
                        close_pack_windows(p);
-                       if (p->pack_fd != -1) {
-                               close(p->pack_fd);
-                               pack_open_fds--;
-                       }
+                       close_pack_fd(p);
                        close_pack_index(p);
                        free(p->bad_object_sha1);
                        *pp = p->next;
@@ -1004,11 +1009,7 @@ static int open_packed_git(struct packed_git *p)
 {
        if (!open_packed_git_1(p))
                return 0;
-       if (p->pack_fd != -1) {
-               close(p->pack_fd);
-               pack_open_fds--;
-               p->pack_fd = -1;
-       }
+       close_pack_fd(p);
        return -1;
 }
 
@@ -1074,11 +1075,8 @@ unsigned char *use_pack(struct packed_git *p,
                                        p->pack_name,
                                        strerror(errno));
                        if (!win->offset && win->len == p->pack_size
-                               && !p->do_not_close) {
-                               close(p->pack_fd);
-                               pack_open_fds--;
-                               p->pack_fd = -1;
-                       }
+                               && !p->do_not_close)
+                               close_pack_fd(p);
                        pack_mmap_calls++;
                        pack_open_windows++;
                        if (pack_mapped > peak_pack_mapped)