From bef70b22ba63d71c1ae2e070e64ff9863ea1ad14 Mon Sep 17 00:00:00 2001 From: Daniel Barkalow Date: Thu, 17 Apr 2008 19:32:30 -0400 Subject: [PATCH] Add a library function to add an alternate to the alternates file This is in the core so that, if the alternates file has already been read, the addition can be parsed and put into effect for the current process. Signed-off-by: Daniel Barkalow Signed-off-by: Junio C Hamano --- cache.h | 1 + sha1_file.c | 12 ++++++++++++ 2 files changed, 13 insertions(+) diff --git a/cache.h b/cache.h index 396eabf6e..9da9179af 100644 --- a/cache.h +++ b/cache.h @@ -599,6 +599,7 @@ extern struct alternate_object_database { char base[FLEX_ARRAY]; /* more */ } *alt_odb_list; extern void prepare_alt_odb(void); +extern void add_to_alternates_file(const char *reference); struct pack_window { struct pack_window *next; diff --git a/sha1_file.c b/sha1_file.c index 3516777bc..d21e23b46 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -380,6 +380,18 @@ static void read_info_alternates(const char * relative_base, int depth) munmap(map, mapsz); } +void add_to_alternates_file(const char *reference) +{ + struct lock_file *lock = xcalloc(1, sizeof(struct lock_file)); + int fd = hold_lock_file_for_append(lock, git_path("objects/info/alternates"), 1); + char *alt = mkpath("%s/objects\n", reference); + write_or_die(fd, alt, strlen(alt)); + if (commit_lock_file(lock)) + die("could not close alternates file"); + if (alt_odb_tail) + link_alt_odb_entries(alt, alt + strlen(alt), '\n', NULL, 0); +} + void prepare_alt_odb(void) { const char *alt; -- 2.30.2