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authorDerrick Stolee <dstolee@microsoft.com>2019-11-21 22:04:50 (GMT)
committerJunio C Hamano <gitster@pobox.com>2019-11-22 07:11:45 (GMT)
commit416adc8711d16c5231693f19ca483dd3d59bef5d (patch)
tree95e680824a7d5869e6dd447d00dab11f653c04fd /builtin/sparse-checkout.c
parentf75a69f88099689b510c7a7261d637bc7004a749 (diff)
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sparse-checkout: update working directory in-process for 'init'
The 'git sparse-checkout init' subcommand previously wrote directly to the sparse-checkout file and then updated the working directory. This may fail if there are modified files not included in the initial pattern set. However, that left a populated sparse-checkout file. Use the in-process working directory update to guarantee that the init subcommand only changes the sparse-checkout file if the working directory update succeeds. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/sparse-checkout.c')
-rw-r--r--builtin/sparse-checkout.c36
1 files changed, 20 insertions, 16 deletions
diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c
index 9a620ff..5dbfb2a 100644
--- a/builtin/sparse-checkout.c
+++ b/builtin/sparse-checkout.c
@@ -13,6 +13,8 @@
#include "resolve-undo.h"
#include "unpack-trees.h"
+static const char *empty_base = "";
+
static char const * const builtin_sparse_checkout_usage[] = {
N_("git sparse-checkout (init|list|set|disable) <options>"),
NULL
@@ -243,10 +245,10 @@ static int sparse_checkout_init(int argc, const char **argv)
{
struct pattern_list pl;
char *sparse_filename;
- FILE *fp;
int res;
struct object_id oid;
int mode;
+ struct strbuf pattern = STRBUF_INIT;
static struct option builtin_sparse_checkout_init_options[] = {
OPT_BOOL(0, "cone", &init_opts.cone_mode,
@@ -275,26 +277,30 @@ static int sparse_checkout_init(int argc, const char **argv)
/* If we already have a sparse-checkout file, use it. */
if (res >= 0) {
free(sparse_filename);
- goto reset_dir;
+ core_apply_sparse_checkout = 1;
+ return update_working_directory(NULL);
}
- /* initial mode: all blobs at root */
- fp = xfopen(sparse_filename, "w");
- if (!fp)
- die(_("failed to open '%s'"), sparse_filename);
+ if (get_oid("HEAD", &oid)) {
+ FILE *fp;
- free(sparse_filename);
- fprintf(fp, "/*\n!/*/\n");
- fclose(fp);
+ /* assume we are in a fresh repo, but update the sparse-checkout file */
+ fp = xfopen(sparse_filename, "w");
+ if (!fp)
+ die(_("failed to open '%s'"), sparse_filename);
- if (get_oid("HEAD", &oid)) {
- /* assume we are in a fresh repo */
+ free(sparse_filename);
+ fprintf(fp, "/*\n!/*/\n");
+ fclose(fp);
return 0;
}
-reset_dir:
- core_apply_sparse_checkout = 1;
- return update_working_directory(NULL);
+ strbuf_addstr(&pattern, "/*");
+ add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);
+ strbuf_addstr(&pattern, "!/*/");
+ add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);
+
+ return write_patterns_and_update(&pl);
}
static void insert_recursive_pattern(struct pattern_list *pl, struct strbuf *path)
@@ -351,7 +357,6 @@ static struct sparse_checkout_set_opts {
static int sparse_checkout_set(int argc, const char **argv, const char *prefix)
{
- static const char *empty_base = "";
int i;
struct pattern_list pl;
int result;
@@ -419,7 +424,6 @@ static int sparse_checkout_set(int argc, const char **argv, const char *prefix)
static int sparse_checkout_disable(int argc, const char **argv)
{
- static const char *empty_base = "";
struct pattern_list pl;
struct strbuf match_all = STRBUF_INIT;