[PATCH 3/8] Add a library function to add an alternate to the alternates file
From: Daniel Barkalow <hidden>
Date: 2016-06-15 22:44:29
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> --- cache.h | 1 + sha1_file.c | 12 ++++++++++++ 2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/cache.h b/cache.h
index 4a113b0..96dcb49 100644
--- a/cache.h
+++ b/cache.h@@ -589,6 +589,7 @@ 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 445a871..1aa3cef 100644
--- a/sha1_file.c
+++ b/sha1_file.c@@ -379,6 +379,18 @@ 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;
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1.5.4.3.610.gea6cd