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Diffstat (limited to 'builtin/pull.c')
-rw-r--r--builtin/pull.c102
1 files changed, 84 insertions, 18 deletions
diff --git a/builtin/pull.c b/builtin/pull.c
index 3e13f81084..1cfaf9f343 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -26,13 +26,13 @@
#include "wt-status.h"
#include "commit-reach.h"
#include "sequencer.h"
+#include "packfile.h"
/**
* Parses the value of --rebase. If value is a false value, returns
* REBASE_FALSE. If value is a true value, returns REBASE_TRUE. If value is
- * "merges", returns REBASE_MERGES. If value is "preserve", returns
- * REBASE_PRESERVE. If value is a invalid value, dies with a fatal error if
- * fatal is true, otherwise returns REBASE_INVALID.
+ * "merges", returns REBASE_MERGES. If value is a invalid value, dies with
+ * a fatal error if fatal is true, otherwise returns REBASE_INVALID.
*/
static enum rebase_type parse_config_rebase(const char *key, const char *value,
int fatal)
@@ -84,6 +84,7 @@ static char *opt_edit;
static char *cleanup_arg;
static char *opt_ff;
static char *opt_verify_signatures;
+static char *opt_verify;
static int opt_autostash = -1;
static int config_autostash;
static int check_trust_level = 1;
@@ -126,7 +127,7 @@ static struct option pull_options[] = {
/* Options passed to git-merge or git-rebase */
OPT_GROUP(N_("Options related to merging")),
OPT_CALLBACK_F('r', "rebase", &opt_rebase,
- "(false|true|merges|preserve|interactive)",
+ "(false|true|merges|interactive)",
N_("incorporate changes by rebasing rather than merging"),
PARSE_OPT_OPTARG, parse_opt_rebase),
OPT_PASSTHRU('n', NULL, &opt_diffstat, NULL,
@@ -160,6 +161,9 @@ static struct option pull_options[] = {
OPT_PASSTHRU(0, "ff-only", &opt_ff, NULL,
N_("abort if fast-forward is not possible"),
PARSE_OPT_NOARG | PARSE_OPT_NONEG),
+ OPT_PASSTHRU(0, "verify", &opt_verify, NULL,
+ N_("control use of pre-merge-commit and commit-msg hooks"),
+ PARSE_OPT_NOARG),
OPT_PASSTHRU(0, "verify-signatures", &opt_verify_signatures, NULL,
N_("verify that the named commit has a valid GPG signature"),
PARSE_OPT_NOARG),
@@ -577,7 +581,7 @@ static int run_fetch(const char *repo, const char **refspecs)
strvec_pushv(&args, refspecs);
} else if (*refspecs)
BUG("refspecs without repo?");
- ret = run_command_v_opt(args.v, RUN_GIT_CMD);
+ ret = run_command_v_opt(args.v, RUN_GIT_CMD | RUN_CLOSE_OBJECT_STORE);
strvec_clear(&args);
return ret;
}
@@ -675,6 +679,8 @@ static int run_merge(void)
strvec_pushf(&args, "--cleanup=%s", cleanup_arg);
if (opt_ff)
strvec_push(&args, opt_ff);
+ if (opt_verify)
+ strvec_push(&args, opt_verify);
if (opt_verify_signatures)
strvec_push(&args, opt_verify_signatures);
strvec_pushv(&args, opt_strategies.v);
@@ -883,8 +889,6 @@ static int run_rebase(const struct object_id *newbase,
/* Options passed to git-rebase */
if (opt_rebase == REBASE_MERGES)
strvec_push(&args, "--rebase-merges");
- else if (opt_rebase == REBASE_PRESERVE)
- strvec_push(&args, "--preserve-merges");
else if (opt_rebase == REBASE_INTERACTIVE)
strvec_push(&args, "--interactive");
if (opt_diffstat)
@@ -893,6 +897,8 @@ static int run_rebase(const struct object_id *newbase,
strvec_pushv(&args, opt_strategy_opts.v);
if (opt_gpg_sign)
strvec_push(&args, opt_gpg_sign);
+ if (opt_signoff)
+ strvec_push(&args, opt_signoff);
if (opt_autostash == 0)
strvec_push(&args, "--no-autostash");
else if (opt_autostash == 1)
@@ -911,12 +917,18 @@ static int run_rebase(const struct object_id *newbase,
return ret;
}
-static int get_can_ff(struct object_id *orig_head, struct object_id *orig_merge_head)
+static int get_can_ff(struct object_id *orig_head,
+ struct oid_array *merge_heads)
{
int ret;
struct commit_list *list = NULL;
struct commit *merge_head, *head;
+ struct object_id *orig_merge_head;
+
+ if (merge_heads->nr > 1)
+ return 0;
+ orig_merge_head = &merge_heads->oid[0];
head = lookup_commit_reference(the_repository, orig_head);
commit_list_insert(head, &list);
merge_head = lookup_commit_reference(the_repository, orig_merge_head);
@@ -925,11 +937,38 @@ static int get_can_ff(struct object_id *orig_head, struct object_id *orig_merge_
return ret;
}
+/*
+ * Is orig_head a descendant of _all_ merge_heads?
+ * Unfortunately is_descendant_of() cannot be used as it asks
+ * if orig_head is a descendant of at least one of them.
+ */
+static int already_up_to_date(struct object_id *orig_head,
+ struct oid_array *merge_heads)
+{
+ int i;
+ struct commit *ours;
+
+ ours = lookup_commit_reference(the_repository, orig_head);
+ for (i = 0; i < merge_heads->nr; i++) {
+ struct commit_list *list = NULL;
+ struct commit *theirs;
+ int ok;
+
+ theirs = lookup_commit_reference(the_repository, &merge_heads->oid[i]);
+ commit_list_insert(theirs, &list);
+ ok = repo_is_descendant_of(the_repository, ours, list);
+ free_commit_list(list);
+ if (!ok)
+ return 0;
+ }
+ return 1;
+}
+
static void show_advice_pull_non_ff(void)
{
- advise(_("Pulling without specifying how to reconcile divergent branches is\n"
- "discouraged. You can squelch this message by running one of the following\n"
- "commands sometime before your next pull:\n"
+ advise(_("You have divergent branches and need to specify how to reconcile them.\n"
+ "You can do so by running one of the following commands sometime before\n"
+ "your next pull:\n"
"\n"
" git config pull.rebase false # merge (the default strategy)\n"
" git config pull.rebase true # rebase\n"
@@ -949,6 +988,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
struct object_id rebase_fork_point;
int rebase_unspecified = 0;
int can_ff;
+ int divergent;
if (!getenv("GIT_REFLOG_ACTION"))
set_reflog_message(argc, argv);
@@ -966,8 +1006,22 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
parse_repo_refspecs(argc, argv, &repo, &refspecs);
- if (!opt_ff)
+ if (!opt_ff) {
opt_ff = xstrdup_or_null(config_get_ff());
+ /*
+ * A subtle point: opt_ff was set on the line above via
+ * reading from config. opt_rebase, in contrast, is set
+ * before this point via command line options. The setting
+ * of opt_rebase via reading from config (using
+ * config_get_rebase()) does not happen until later. We
+ * are relying on the next if-condition happening before
+ * the config_get_rebase() call so that an explicit
+ * "--rebase" can override a config setting of
+ * pull.ff=only.
+ */
+ if (opt_rebase >= 0 && opt_ff && !strcmp(opt_ff, "--ff-only"))
+ opt_ff = "--ff";
+ }
if (opt_rebase < 0)
opt_rebase = config_get_rebase(&rebase_unspecified);
@@ -1041,14 +1095,26 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
die(_("Cannot merge multiple branches into empty head."));
return pull_into_void(merge_heads.oid, &curr_head);
}
- if (opt_rebase && merge_heads.nr > 1)
- die(_("Cannot rebase onto multiple branches."));
+ if (merge_heads.nr > 1) {
+ if (opt_rebase)
+ die(_("Cannot rebase onto multiple branches."));
+ if (opt_ff && !strcmp(opt_ff, "--ff-only"))
+ die(_("Cannot fast-forward to multiple branches."));
+ }
- can_ff = get_can_ff(&orig_head, &merge_heads.oid[0]);
+ can_ff = get_can_ff(&orig_head, &merge_heads);
+ divergent = !can_ff && !already_up_to_date(&orig_head, &merge_heads);
- if (rebase_unspecified && !opt_ff && !can_ff) {
- if (opt_verbosity >= 0)
- show_advice_pull_non_ff();
+ /* ff-only takes precedence over rebase */
+ if (opt_ff && !strcmp(opt_ff, "--ff-only")) {
+ if (divergent)
+ die_ff_impossible();
+ opt_rebase = REBASE_FALSE;
+ }
+ /* If no action specified and we can't fast forward, then warn. */
+ if (!opt_ff && rebase_unspecified && divergent) {
+ show_advice_pull_non_ff();
+ die(_("Need to specify how to reconcile divergent branches."));
}
if (opt_rebase) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 14:24:29 +0000