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https://github.com/git/git
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![Elijah Newren](/assets/img/avatar_default.png)
Reported-by: Jens Schleusener <Jens.Schleusener@fossies.org> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1893 lines
52 KiB
C
1893 lines
52 KiB
C
/*
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* "git fetch"
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*/
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#include "cache.h"
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#include "config.h"
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#include "repository.h"
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#include "refs.h"
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#include "refspec.h"
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#include "object-store.h"
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#include "oidset.h"
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#include "commit.h"
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#include "builtin.h"
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#include "string-list.h"
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#include "remote.h"
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#include "transport.h"
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#include "run-command.h"
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#include "parse-options.h"
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#include "sigchain.h"
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#include "submodule-config.h"
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#include "submodule.h"
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#include "connected.h"
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#include "argv-array.h"
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#include "utf8.h"
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#include "packfile.h"
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#include "list-objects-filter-options.h"
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#include "commit-reach.h"
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#include "branch.h"
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#include "promisor-remote.h"
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#include "commit-graph.h"
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#define FORCED_UPDATES_DELAY_WARNING_IN_MS (10 * 1000)
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static const char * const builtin_fetch_usage[] = {
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N_("git fetch [<options>] [<repository> [<refspec>...]]"),
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N_("git fetch [<options>] <group>"),
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N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
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N_("git fetch --all [<options>]"),
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NULL
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};
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enum {
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TAGS_UNSET = 0,
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TAGS_DEFAULT = 1,
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TAGS_SET = 2
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};
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static int fetch_prune_config = -1; /* unspecified */
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static int fetch_show_forced_updates = 1;
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static uint64_t forced_updates_ms = 0;
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static int prune = -1; /* unspecified */
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#define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
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static int fetch_prune_tags_config = -1; /* unspecified */
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static int prune_tags = -1; /* unspecified */
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#define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
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static int all, append, dry_run, force, keep, multiple, update_head_ok;
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static int verbosity, deepen_relative, set_upstream;
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static int progress = -1;
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static int enable_auto_gc = 1;
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static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
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static int max_jobs = -1, submodule_fetch_jobs_config = -1;
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static int fetch_parallel_config = 1;
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static enum transport_family family;
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static const char *depth;
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static const char *deepen_since;
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static const char *upload_pack;
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static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
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static struct strbuf default_rla = STRBUF_INIT;
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static struct transport *gtransport;
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static struct transport *gsecondary;
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static const char *submodule_prefix = "";
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static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
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static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
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static int shown_url = 0;
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static struct refspec refmap = REFSPEC_INIT_FETCH;
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static struct list_objects_filter_options filter_options;
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static struct string_list server_options = STRING_LIST_INIT_DUP;
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static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
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static int git_fetch_config(const char *k, const char *v, void *cb)
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{
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if (!strcmp(k, "fetch.prune")) {
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fetch_prune_config = git_config_bool(k, v);
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return 0;
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}
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if (!strcmp(k, "fetch.prunetags")) {
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fetch_prune_tags_config = git_config_bool(k, v);
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return 0;
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}
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if (!strcmp(k, "fetch.showforcedupdates")) {
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fetch_show_forced_updates = git_config_bool(k, v);
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return 0;
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}
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if (!strcmp(k, "submodule.recurse")) {
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int r = git_config_bool(k, v) ?
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RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
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recurse_submodules = r;
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}
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if (!strcmp(k, "submodule.fetchjobs")) {
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submodule_fetch_jobs_config = parse_submodule_fetchjobs(k, v);
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return 0;
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} else if (!strcmp(k, "fetch.recursesubmodules")) {
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recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
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return 0;
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}
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if (!strcmp(k, "fetch.parallel")) {
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fetch_parallel_config = git_config_int(k, v);
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if (fetch_parallel_config < 0)
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die(_("fetch.parallel cannot be negative"));
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return 0;
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}
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return git_default_config(k, v, cb);
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}
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static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
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{
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BUG_ON_OPT_NEG(unset);
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/*
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* "git fetch --refmap='' origin foo"
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* can be used to tell the command not to store anywhere
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*/
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refspec_append(&refmap, arg);
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return 0;
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}
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static struct option builtin_fetch_options[] = {
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OPT__VERBOSITY(&verbosity),
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OPT_BOOL(0, "all", &all,
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N_("fetch from all remotes")),
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OPT_BOOL(0, "set-upstream", &set_upstream,
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N_("set upstream for git pull/fetch")),
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OPT_BOOL('a', "append", &append,
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N_("append to .git/FETCH_HEAD instead of overwriting")),
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OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
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N_("path to upload pack on remote end")),
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OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
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OPT_BOOL('m', "multiple", &multiple,
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N_("fetch from multiple remotes")),
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OPT_SET_INT('t', "tags", &tags,
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N_("fetch all tags and associated objects"), TAGS_SET),
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OPT_SET_INT('n', NULL, &tags,
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N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
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OPT_INTEGER('j', "jobs", &max_jobs,
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N_("number of submodules fetched in parallel")),
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OPT_BOOL('p', "prune", &prune,
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N_("prune remote-tracking branches no longer on remote")),
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OPT_BOOL('P', "prune-tags", &prune_tags,
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N_("prune local tags no longer on remote and clobber changed tags")),
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{ OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
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N_("control recursive fetching of submodules"),
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PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
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OPT_BOOL(0, "dry-run", &dry_run,
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N_("dry run")),
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OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
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OPT_BOOL('u', "update-head-ok", &update_head_ok,
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N_("allow updating of HEAD ref")),
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OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
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OPT_STRING(0, "depth", &depth, N_("depth"),
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N_("deepen history of shallow clone")),
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OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
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N_("deepen history of shallow repository based on time")),
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OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
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N_("deepen history of shallow clone, excluding rev")),
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OPT_INTEGER(0, "deepen", &deepen_relative,
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N_("deepen history of shallow clone")),
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OPT_SET_INT_F(0, "unshallow", &unshallow,
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N_("convert to a complete repository"),
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1, PARSE_OPT_NONEG),
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{ OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
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N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
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{ OPTION_CALLBACK, 0, "recurse-submodules-default",
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&recurse_submodules_default, N_("on-demand"),
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N_("default for recursive fetching of submodules "
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"(lower priority than config files)"),
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PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules },
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OPT_BOOL(0, "update-shallow", &update_shallow,
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N_("accept refs that update .git/shallow")),
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{ OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
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N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
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OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
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OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
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TRANSPORT_FAMILY_IPV4),
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OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
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TRANSPORT_FAMILY_IPV6),
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OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
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N_("report that we have only objects reachable from this object")),
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OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
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OPT_BOOL(0, "auto-gc", &enable_auto_gc,
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N_("run 'gc --auto' after fetching")),
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OPT_BOOL(0, "show-forced-updates", &fetch_show_forced_updates,
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N_("check for forced-updates on all updated branches")),
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OPT_END()
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};
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static void unlock_pack(void)
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{
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if (gtransport)
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transport_unlock_pack(gtransport);
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if (gsecondary)
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transport_unlock_pack(gsecondary);
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}
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static void unlock_pack_on_signal(int signo)
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{
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unlock_pack();
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sigchain_pop(signo);
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raise(signo);
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}
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static void add_merge_config(struct ref **head,
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const struct ref *remote_refs,
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struct branch *branch,
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struct ref ***tail)
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{
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int i;
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for (i = 0; i < branch->merge_nr; i++) {
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struct ref *rm, **old_tail = *tail;
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struct refspec_item refspec;
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for (rm = *head; rm; rm = rm->next) {
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if (branch_merge_matches(branch, i, rm->name)) {
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rm->fetch_head_status = FETCH_HEAD_MERGE;
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break;
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}
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}
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if (rm)
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continue;
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/*
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* Not fetched to a remote-tracking branch? We need to fetch
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* it anyway to allow this branch's "branch.$name.merge"
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* to be honored by 'git pull', but we do not have to
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* fail if branch.$name.merge is misconfigured to point
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* at a nonexisting branch. If we were indeed called by
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* 'git pull', it will notice the misconfiguration because
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* there is no entry in the resulting FETCH_HEAD marked
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* for merging.
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*/
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memset(&refspec, 0, sizeof(refspec));
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refspec.src = branch->merge[i]->src;
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get_fetch_map(remote_refs, &refspec, tail, 1);
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for (rm = *old_tail; rm; rm = rm->next)
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rm->fetch_head_status = FETCH_HEAD_MERGE;
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}
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}
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static void create_fetch_oidset(struct ref **head, struct oidset *out)
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{
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struct ref *rm = *head;
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while (rm) {
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oidset_insert(out, &rm->old_oid);
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rm = rm->next;
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}
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}
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struct refname_hash_entry {
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struct hashmap_entry ent;
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struct object_id oid;
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int ignore;
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char refname[FLEX_ARRAY];
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};
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static int refname_hash_entry_cmp(const void *hashmap_cmp_fn_data,
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const struct hashmap_entry *eptr,
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const struct hashmap_entry *entry_or_key,
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const void *keydata)
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{
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const struct refname_hash_entry *e1, *e2;
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e1 = container_of(eptr, const struct refname_hash_entry, ent);
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e2 = container_of(entry_or_key, const struct refname_hash_entry, ent);
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return strcmp(e1->refname, keydata ? keydata : e2->refname);
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}
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static struct refname_hash_entry *refname_hash_add(struct hashmap *map,
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const char *refname,
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const struct object_id *oid)
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{
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struct refname_hash_entry *ent;
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size_t len = strlen(refname);
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FLEX_ALLOC_MEM(ent, refname, refname, len);
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hashmap_entry_init(&ent->ent, strhash(refname));
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oidcpy(&ent->oid, oid);
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hashmap_add(map, &ent->ent);
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return ent;
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}
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static int add_one_refname(const char *refname,
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const struct object_id *oid,
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int flag, void *cbdata)
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{
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struct hashmap *refname_map = cbdata;
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(void) refname_hash_add(refname_map, refname, oid);
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return 0;
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}
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static void refname_hash_init(struct hashmap *map)
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{
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hashmap_init(map, refname_hash_entry_cmp, NULL, 0);
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}
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static int refname_hash_exists(struct hashmap *map, const char *refname)
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{
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return !!hashmap_get_from_hash(map, strhash(refname), refname);
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}
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static void clear_item(struct refname_hash_entry *item)
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{
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item->ignore = 1;
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}
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static void find_non_local_tags(const struct ref *refs,
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struct ref **head,
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struct ref ***tail)
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{
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struct hashmap existing_refs;
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struct hashmap remote_refs;
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struct oidset fetch_oids = OIDSET_INIT;
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struct string_list remote_refs_list = STRING_LIST_INIT_NODUP;
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struct string_list_item *remote_ref_item;
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const struct ref *ref;
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struct refname_hash_entry *item = NULL;
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refname_hash_init(&existing_refs);
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refname_hash_init(&remote_refs);
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create_fetch_oidset(head, &fetch_oids);
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for_each_ref(add_one_refname, &existing_refs);
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for (ref = refs; ref; ref = ref->next) {
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if (!starts_with(ref->name, "refs/tags/"))
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continue;
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/*
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* The peeled ref always follows the matching base
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* ref, so if we see a peeled ref that we don't want
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* to fetch then we can mark the ref entry in the list
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* as one to ignore by setting util to NULL.
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*/
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if (ends_with(ref->name, "^{}")) {
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if (item &&
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!has_object_file_with_flags(&ref->old_oid,
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OBJECT_INFO_QUICK) &&
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!oidset_contains(&fetch_oids, &ref->old_oid) &&
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!has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
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!oidset_contains(&fetch_oids, &item->oid))
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clear_item(item);
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item = NULL;
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continue;
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}
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/*
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* If item is non-NULL here, then we previously saw a
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* ref not followed by a peeled reference, so we need
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* to check if it is a lightweight tag that we want to
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* fetch.
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*/
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if (item &&
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!has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
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!oidset_contains(&fetch_oids, &item->oid))
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clear_item(item);
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item = NULL;
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/* skip duplicates and refs that we already have */
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if (refname_hash_exists(&remote_refs, ref->name) ||
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refname_hash_exists(&existing_refs, ref->name))
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continue;
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item = refname_hash_add(&remote_refs, ref->name, &ref->old_oid);
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string_list_insert(&remote_refs_list, ref->name);
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}
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hashmap_free_entries(&existing_refs, struct refname_hash_entry, ent);
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/*
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* We may have a final lightweight tag that needs to be
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* checked to see if it needs fetching.
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*/
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if (item &&
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!has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
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!oidset_contains(&fetch_oids, &item->oid))
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clear_item(item);
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/*
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* For all the tags in the remote_refs_list,
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* add them to the list of refs to be fetched
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*/
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for_each_string_list_item(remote_ref_item, &remote_refs_list) {
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const char *refname = remote_ref_item->string;
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struct ref *rm;
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unsigned int hash = strhash(refname);
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item = hashmap_get_entry_from_hash(&remote_refs, hash, refname,
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struct refname_hash_entry, ent);
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if (!item)
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BUG("unseen remote ref?");
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/* Unless we have already decided to ignore this item... */
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if (item->ignore)
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continue;
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rm = alloc_ref(item->refname);
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rm->peer_ref = alloc_ref(item->refname);
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oidcpy(&rm->old_oid, &item->oid);
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**tail = rm;
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*tail = &rm->next;
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}
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hashmap_free_entries(&remote_refs, struct refname_hash_entry, ent);
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string_list_clear(&remote_refs_list, 0);
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oidset_clear(&fetch_oids);
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}
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static struct ref *get_ref_map(struct remote *remote,
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const struct ref *remote_refs,
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struct refspec *rs,
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int tags, int *autotags)
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{
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int i;
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struct ref *rm;
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struct ref *ref_map = NULL;
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struct ref **tail = &ref_map;
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/* opportunistically-updated references: */
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struct ref *orefs = NULL, **oref_tail = &orefs;
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struct hashmap existing_refs;
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if (rs->nr) {
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struct refspec *fetch_refspec;
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for (i = 0; i < rs->nr; i++) {
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get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
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if (rs->items[i].dst && rs->items[i].dst[0])
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*autotags = 1;
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}
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/* Merge everything on the command line (but not --tags) */
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for (rm = ref_map; rm; rm = rm->next)
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rm->fetch_head_status = FETCH_HEAD_MERGE;
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/*
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* For any refs that we happen to be fetching via
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* command-line arguments, the destination ref might
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* have been missing or have been different than the
|
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* remote-tracking ref that would be derived from the
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* configured refspec. In these cases, we want to
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* take the opportunity to update their configured
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* remote-tracking reference. However, we do not want
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* to mention these entries in FETCH_HEAD at all, as
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* they would simply be duplicates of existing
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* entries, so we set them FETCH_HEAD_IGNORE below.
|
|
*
|
|
* We compute these entries now, based only on the
|
|
* refspecs specified on the command line. But we add
|
|
* them to the list following the refspecs resulting
|
|
* from the tags option so that one of the latter,
|
|
* which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
|
|
* by ref_remove_duplicates() in favor of one of these
|
|
* opportunistic entries with FETCH_HEAD_IGNORE.
|
|
*/
|
|
if (refmap.nr)
|
|
fetch_refspec = &refmap;
|
|
else
|
|
fetch_refspec = &remote->fetch;
|
|
|
|
for (i = 0; i < fetch_refspec->nr; i++)
|
|
get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
|
|
} else if (refmap.nr) {
|
|
die("--refmap option is only meaningful with command-line refspec(s).");
|
|
} else {
|
|
/* Use the defaults */
|
|
struct branch *branch = branch_get(NULL);
|
|
int has_merge = branch_has_merge_config(branch);
|
|
if (remote &&
|
|
(remote->fetch.nr ||
|
|
/* Note: has_merge implies non-NULL branch->remote_name */
|
|
(has_merge && !strcmp(branch->remote_name, remote->name)))) {
|
|
for (i = 0; i < remote->fetch.nr; i++) {
|
|
get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
|
|
if (remote->fetch.items[i].dst &&
|
|
remote->fetch.items[i].dst[0])
|
|
*autotags = 1;
|
|
if (!i && !has_merge && ref_map &&
|
|
!remote->fetch.items[0].pattern)
|
|
ref_map->fetch_head_status = FETCH_HEAD_MERGE;
|
|
}
|
|
/*
|
|
* if the remote we're fetching from is the same
|
|
* as given in branch.<name>.remote, we add the
|
|
* ref given in branch.<name>.merge, too.
|
|
*
|
|
* Note: has_merge implies non-NULL branch->remote_name
|
|
*/
|
|
if (has_merge &&
|
|
!strcmp(branch->remote_name, remote->name))
|
|
add_merge_config(&ref_map, remote_refs, branch, &tail);
|
|
} else {
|
|
ref_map = get_remote_ref(remote_refs, "HEAD");
|
|
if (!ref_map)
|
|
die(_("Couldn't find remote ref HEAD"));
|
|
ref_map->fetch_head_status = FETCH_HEAD_MERGE;
|
|
tail = &ref_map->next;
|
|
}
|
|
}
|
|
|
|
if (tags == TAGS_SET)
|
|
/* also fetch all tags */
|
|
get_fetch_map(remote_refs, tag_refspec, &tail, 0);
|
|
else if (tags == TAGS_DEFAULT && *autotags)
|
|
find_non_local_tags(remote_refs, &ref_map, &tail);
|
|
|
|
/* Now append any refs to be updated opportunistically: */
|
|
*tail = orefs;
|
|
for (rm = orefs; rm; rm = rm->next) {
|
|
rm->fetch_head_status = FETCH_HEAD_IGNORE;
|
|
tail = &rm->next;
|
|
}
|
|
|
|
ref_map = ref_remove_duplicates(ref_map);
|
|
|
|
refname_hash_init(&existing_refs);
|
|
for_each_ref(add_one_refname, &existing_refs);
|
|
|
|
for (rm = ref_map; rm; rm = rm->next) {
|
|
if (rm->peer_ref) {
|
|
const char *refname = rm->peer_ref->name;
|
|
struct refname_hash_entry *peer_item;
|
|
unsigned int hash = strhash(refname);
|
|
|
|
peer_item = hashmap_get_entry_from_hash(&existing_refs,
|
|
hash, refname,
|
|
struct refname_hash_entry, ent);
|
|
if (peer_item) {
|
|
struct object_id *old_oid = &peer_item->oid;
|
|
oidcpy(&rm->peer_ref->old_oid, old_oid);
|
|
}
|
|
}
|
|
}
|
|
hashmap_free_entries(&existing_refs, struct refname_hash_entry, ent);
|
|
|
|
return ref_map;
|
|
}
|
|
|
|
#define STORE_REF_ERROR_OTHER 1
|
|
#define STORE_REF_ERROR_DF_CONFLICT 2
|
|
|
|
static int s_update_ref(const char *action,
|
|
struct ref *ref,
|
|
int check_old)
|
|
{
|
|
char *msg;
|
|
char *rla = getenv("GIT_REFLOG_ACTION");
|
|
struct ref_transaction *transaction;
|
|
struct strbuf err = STRBUF_INIT;
|
|
int ret, df_conflict = 0;
|
|
|
|
if (dry_run)
|
|
return 0;
|
|
if (!rla)
|
|
rla = default_rla.buf;
|
|
msg = xstrfmt("%s: %s", rla, action);
|
|
|
|
transaction = ref_transaction_begin(&err);
|
|
if (!transaction ||
|
|
ref_transaction_update(transaction, ref->name,
|
|
&ref->new_oid,
|
|
check_old ? &ref->old_oid : NULL,
|
|
0, msg, &err))
|
|
goto fail;
|
|
|
|
ret = ref_transaction_commit(transaction, &err);
|
|
if (ret) {
|
|
df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
|
|
goto fail;
|
|
}
|
|
|
|
ref_transaction_free(transaction);
|
|
strbuf_release(&err);
|
|
free(msg);
|
|
return 0;
|
|
fail:
|
|
ref_transaction_free(transaction);
|
|
error("%s", err.buf);
|
|
strbuf_release(&err);
|
|
free(msg);
|
|
return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
|
|
: STORE_REF_ERROR_OTHER;
|
|
}
|
|
|
|
static int refcol_width = 10;
|
|
static int compact_format;
|
|
|
|
static void adjust_refcol_width(const struct ref *ref)
|
|
{
|
|
int max, rlen, llen, len;
|
|
|
|
/* uptodate lines are only shown on high verbosity level */
|
|
if (!verbosity && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
|
|
return;
|
|
|
|
max = term_columns();
|
|
rlen = utf8_strwidth(prettify_refname(ref->name));
|
|
|
|
llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
|
|
|
|
/*
|
|
* rough estimation to see if the output line is too long and
|
|
* should not be counted (we can't do precise calculation
|
|
* anyway because we don't know if the error explanation part
|
|
* will be printed in update_local_ref)
|
|
*/
|
|
if (compact_format) {
|
|
llen = 0;
|
|
max = max * 2 / 3;
|
|
}
|
|
len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
|
|
if (len >= max)
|
|
return;
|
|
|
|
/*
|
|
* Not precise calculation for compact mode because '*' can
|
|
* appear on the left hand side of '->' and shrink the column
|
|
* back.
|
|
*/
|
|
if (refcol_width < rlen)
|
|
refcol_width = rlen;
|
|
}
|
|
|
|
static void prepare_format_display(struct ref *ref_map)
|
|
{
|
|
struct ref *rm;
|
|
const char *format = "full";
|
|
|
|
git_config_get_string_const("fetch.output", &format);
|
|
if (!strcasecmp(format, "full"))
|
|
compact_format = 0;
|
|
else if (!strcasecmp(format, "compact"))
|
|
compact_format = 1;
|
|
else
|
|
die(_("configuration fetch.output contains invalid value %s"),
|
|
format);
|
|
|
|
for (rm = ref_map; rm; rm = rm->next) {
|
|
if (rm->status == REF_STATUS_REJECT_SHALLOW ||
|
|
!rm->peer_ref ||
|
|
!strcmp(rm->name, "HEAD"))
|
|
continue;
|
|
|
|
adjust_refcol_width(rm);
|
|
}
|
|
}
|
|
|
|
static void print_remote_to_local(struct strbuf *display,
|
|
const char *remote, const char *local)
|
|
{
|
|
strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
|
|
}
|
|
|
|
static int find_and_replace(struct strbuf *haystack,
|
|
const char *needle,
|
|
const char *placeholder)
|
|
{
|
|
const char *p = NULL;
|
|
int plen, nlen;
|
|
|
|
nlen = strlen(needle);
|
|
if (ends_with(haystack->buf, needle))
|
|
p = haystack->buf + haystack->len - nlen;
|
|
else
|
|
p = strstr(haystack->buf, needle);
|
|
if (!p)
|
|
return 0;
|
|
|
|
if (p > haystack->buf && p[-1] != '/')
|
|
return 0;
|
|
|
|
plen = strlen(p);
|
|
if (plen > nlen && p[nlen] != '/')
|
|
return 0;
|
|
|
|
strbuf_splice(haystack, p - haystack->buf, nlen,
|
|
placeholder, strlen(placeholder));
|
|
return 1;
|
|
}
|
|
|
|
static void print_compact(struct strbuf *display,
|
|
const char *remote, const char *local)
|
|
{
|
|
struct strbuf r = STRBUF_INIT;
|
|
struct strbuf l = STRBUF_INIT;
|
|
|
|
if (!strcmp(remote, local)) {
|
|
strbuf_addf(display, "%-*s -> *", refcol_width, remote);
|
|
return;
|
|
}
|
|
|
|
strbuf_addstr(&r, remote);
|
|
strbuf_addstr(&l, local);
|
|
|
|
if (!find_and_replace(&r, local, "*"))
|
|
find_and_replace(&l, remote, "*");
|
|
print_remote_to_local(display, r.buf, l.buf);
|
|
|
|
strbuf_release(&r);
|
|
strbuf_release(&l);
|
|
}
|
|
|
|
static void format_display(struct strbuf *display, char code,
|
|
const char *summary, const char *error,
|
|
const char *remote, const char *local,
|
|
int summary_width)
|
|
{
|
|
int width = (summary_width + strlen(summary) - gettext_width(summary));
|
|
|
|
strbuf_addf(display, "%c %-*s ", code, width, summary);
|
|
if (!compact_format)
|
|
print_remote_to_local(display, remote, local);
|
|
else
|
|
print_compact(display, remote, local);
|
|
if (error)
|
|
strbuf_addf(display, " (%s)", error);
|
|
}
|
|
|
|
static int update_local_ref(struct ref *ref,
|
|
const char *remote,
|
|
const struct ref *remote_ref,
|
|
struct strbuf *display,
|
|
int summary_width)
|
|
{
|
|
struct commit *current = NULL, *updated;
|
|
enum object_type type;
|
|
struct branch *current_branch = branch_get(NULL);
|
|
const char *pretty_ref = prettify_refname(ref->name);
|
|
int fast_forward = 0;
|
|
|
|
type = oid_object_info(the_repository, &ref->new_oid, NULL);
|
|
if (type < 0)
|
|
die(_("object %s not found"), oid_to_hex(&ref->new_oid));
|
|
|
|
if (oideq(&ref->old_oid, &ref->new_oid)) {
|
|
if (verbosity > 0)
|
|
format_display(display, '=', _("[up to date]"), NULL,
|
|
remote, pretty_ref, summary_width);
|
|
return 0;
|
|
}
|
|
|
|
if (current_branch &&
|
|
!strcmp(ref->name, current_branch->name) &&
|
|
!(update_head_ok || is_bare_repository()) &&
|
|
!is_null_oid(&ref->old_oid)) {
|
|
/*
|
|
* If this is the head, and it's not okay to update
|
|
* the head, and the old value of the head isn't empty...
|
|
*/
|
|
format_display(display, '!', _("[rejected]"),
|
|
_("can't fetch in current branch"),
|
|
remote, pretty_ref, summary_width);
|
|
return 1;
|
|
}
|
|
|
|
if (!is_null_oid(&ref->old_oid) &&
|
|
starts_with(ref->name, "refs/tags/")) {
|
|
if (force || ref->force) {
|
|
int r;
|
|
r = s_update_ref("updating tag", ref, 0);
|
|
format_display(display, r ? '!' : 't', _("[tag update]"),
|
|
r ? _("unable to update local ref") : NULL,
|
|
remote, pretty_ref, summary_width);
|
|
return r;
|
|
} else {
|
|
format_display(display, '!', _("[rejected]"), _("would clobber existing tag"),
|
|
remote, pretty_ref, summary_width);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
current = lookup_commit_reference_gently(the_repository,
|
|
&ref->old_oid, 1);
|
|
updated = lookup_commit_reference_gently(the_repository,
|
|
&ref->new_oid, 1);
|
|
if (!current || !updated) {
|
|
const char *msg;
|
|
const char *what;
|
|
int r;
|
|
/*
|
|
* Nicely describe the new ref we're fetching.
|
|
* Base this on the remote's ref name, as it's
|
|
* more likely to follow a standard layout.
|
|
*/
|
|
const char *name = remote_ref ? remote_ref->name : "";
|
|
if (starts_with(name, "refs/tags/")) {
|
|
msg = "storing tag";
|
|
what = _("[new tag]");
|
|
} else if (starts_with(name, "refs/heads/")) {
|
|
msg = "storing head";
|
|
what = _("[new branch]");
|
|
} else {
|
|
msg = "storing ref";
|
|
what = _("[new ref]");
|
|
}
|
|
|
|
r = s_update_ref(msg, ref, 0);
|
|
format_display(display, r ? '!' : '*', what,
|
|
r ? _("unable to update local ref") : NULL,
|
|
remote, pretty_ref, summary_width);
|
|
return r;
|
|
}
|
|
|
|
if (fetch_show_forced_updates) {
|
|
uint64_t t_before = getnanotime();
|
|
fast_forward = in_merge_bases(current, updated);
|
|
forced_updates_ms += (getnanotime() - t_before) / 1000000;
|
|
} else {
|
|
fast_forward = 1;
|
|
}
|
|
|
|
if (fast_forward) {
|
|
struct strbuf quickref = STRBUF_INIT;
|
|
int r;
|
|
|
|
strbuf_add_unique_abbrev(&quickref, ¤t->object.oid, DEFAULT_ABBREV);
|
|
strbuf_addstr(&quickref, "..");
|
|
strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
|
|
r = s_update_ref("fast-forward", ref, 1);
|
|
format_display(display, r ? '!' : ' ', quickref.buf,
|
|
r ? _("unable to update local ref") : NULL,
|
|
remote, pretty_ref, summary_width);
|
|
strbuf_release(&quickref);
|
|
return r;
|
|
} else if (force || ref->force) {
|
|
struct strbuf quickref = STRBUF_INIT;
|
|
int r;
|
|
strbuf_add_unique_abbrev(&quickref, ¤t->object.oid, DEFAULT_ABBREV);
|
|
strbuf_addstr(&quickref, "...");
|
|
strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
|
|
r = s_update_ref("forced-update", ref, 1);
|
|
format_display(display, r ? '!' : '+', quickref.buf,
|
|
r ? _("unable to update local ref") : _("forced update"),
|
|
remote, pretty_ref, summary_width);
|
|
strbuf_release(&quickref);
|
|
return r;
|
|
} else {
|
|
format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
|
|
remote, pretty_ref, summary_width);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static int iterate_ref_map(void *cb_data, struct object_id *oid)
|
|
{
|
|
struct ref **rm = cb_data;
|
|
struct ref *ref = *rm;
|
|
|
|
while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
|
|
ref = ref->next;
|
|
if (!ref)
|
|
return -1; /* end of the list */
|
|
*rm = ref->next;
|
|
oidcpy(oid, &ref->old_oid);
|
|
return 0;
|
|
}
|
|
|
|
static const char warn_show_forced_updates[] =
|
|
N_("Fetch normally indicates which branches had a forced update,\n"
|
|
"but that check has been disabled. To re-enable, use '--show-forced-updates'\n"
|
|
"flag or run 'git config fetch.showForcedUpdates true'.");
|
|
static const char warn_time_show_forced_updates[] =
|
|
N_("It took %.2f seconds to check forced updates. You can use\n"
|
|
"'--no-show-forced-updates' or run 'git config fetch.showForcedUpdates false'\n"
|
|
" to avoid this check.\n");
|
|
|
|
static int store_updated_refs(const char *raw_url, const char *remote_name,
|
|
int connectivity_checked, struct ref *ref_map)
|
|
{
|
|
FILE *fp;
|
|
struct commit *commit;
|
|
int url_len, i, rc = 0;
|
|
struct strbuf note = STRBUF_INIT;
|
|
const char *what, *kind;
|
|
struct ref *rm;
|
|
char *url;
|
|
const char *filename = dry_run ? "/dev/null" : git_path_fetch_head(the_repository);
|
|
int want_status;
|
|
int summary_width = transport_summary_width(ref_map);
|
|
|
|
fp = fopen(filename, "a");
|
|
if (!fp)
|
|
return error_errno(_("cannot open %s"), filename);
|
|
|
|
if (raw_url)
|
|
url = transport_anonymize_url(raw_url);
|
|
else
|
|
url = xstrdup("foreign");
|
|
|
|
if (!connectivity_checked) {
|
|
rm = ref_map;
|
|
if (check_connected(iterate_ref_map, &rm, NULL)) {
|
|
rc = error(_("%s did not send all necessary objects\n"), url);
|
|
goto abort;
|
|
}
|
|
}
|
|
|
|
prepare_format_display(ref_map);
|
|
|
|
/*
|
|
* We do a pass for each fetch_head_status type in their enum order, so
|
|
* merged entries are written before not-for-merge. That lets readers
|
|
* use FETCH_HEAD as a refname to refer to the ref to be merged.
|
|
*/
|
|
for (want_status = FETCH_HEAD_MERGE;
|
|
want_status <= FETCH_HEAD_IGNORE;
|
|
want_status++) {
|
|
for (rm = ref_map; rm; rm = rm->next) {
|
|
struct ref *ref = NULL;
|
|
const char *merge_status_marker = "";
|
|
|
|
if (rm->status == REF_STATUS_REJECT_SHALLOW) {
|
|
if (want_status == FETCH_HEAD_MERGE)
|
|
warning(_("reject %s because shallow roots are not allowed to be updated"),
|
|
rm->peer_ref ? rm->peer_ref->name : rm->name);
|
|
continue;
|
|
}
|
|
|
|
commit = lookup_commit_reference_gently(the_repository,
|
|
&rm->old_oid,
|
|
1);
|
|
if (!commit)
|
|
rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
|
|
|
|
if (rm->fetch_head_status != want_status)
|
|
continue;
|
|
|
|
if (rm->peer_ref) {
|
|
ref = alloc_ref(rm->peer_ref->name);
|
|
oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
|
|
oidcpy(&ref->new_oid, &rm->old_oid);
|
|
ref->force = rm->peer_ref->force;
|
|
}
|
|
|
|
if (recurse_submodules != RECURSE_SUBMODULES_OFF)
|
|
check_for_new_submodule_commits(&rm->old_oid);
|
|
|
|
if (!strcmp(rm->name, "HEAD")) {
|
|
kind = "";
|
|
what = "";
|
|
}
|
|
else if (starts_with(rm->name, "refs/heads/")) {
|
|
kind = "branch";
|
|
what = rm->name + 11;
|
|
}
|
|
else if (starts_with(rm->name, "refs/tags/")) {
|
|
kind = "tag";
|
|
what = rm->name + 10;
|
|
}
|
|
else if (starts_with(rm->name, "refs/remotes/")) {
|
|
kind = "remote-tracking branch";
|
|
what = rm->name + 13;
|
|
}
|
|
else {
|
|
kind = "";
|
|
what = rm->name;
|
|
}
|
|
|
|
url_len = strlen(url);
|
|
for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
|
|
;
|
|
url_len = i + 1;
|
|
if (4 < i && !strncmp(".git", url + i - 3, 4))
|
|
url_len = i - 3;
|
|
|
|
strbuf_reset(¬e);
|
|
if (*what) {
|
|
if (*kind)
|
|
strbuf_addf(¬e, "%s ", kind);
|
|
strbuf_addf(¬e, "'%s' of ", what);
|
|
}
|
|
switch (rm->fetch_head_status) {
|
|
case FETCH_HEAD_NOT_FOR_MERGE:
|
|
merge_status_marker = "not-for-merge";
|
|
/* fall-through */
|
|
case FETCH_HEAD_MERGE:
|
|
fprintf(fp, "%s\t%s\t%s",
|
|
oid_to_hex(&rm->old_oid),
|
|
merge_status_marker,
|
|
note.buf);
|
|
for (i = 0; i < url_len; ++i)
|
|
if ('\n' == url[i])
|
|
fputs("\\n", fp);
|
|
else
|
|
fputc(url[i], fp);
|
|
fputc('\n', fp);
|
|
break;
|
|
default:
|
|
/* do not write anything to FETCH_HEAD */
|
|
break;
|
|
}
|
|
|
|
strbuf_reset(¬e);
|
|
if (ref) {
|
|
rc |= update_local_ref(ref, what, rm, ¬e,
|
|
summary_width);
|
|
free(ref);
|
|
} else
|
|
format_display(¬e, '*',
|
|
*kind ? kind : "branch", NULL,
|
|
*what ? what : "HEAD",
|
|
"FETCH_HEAD", summary_width);
|
|
if (note.len) {
|
|
if (verbosity >= 0 && !shown_url) {
|
|
fprintf(stderr, _("From %.*s\n"),
|
|
url_len, url);
|
|
shown_url = 1;
|
|
}
|
|
if (verbosity >= 0)
|
|
fprintf(stderr, " %s\n", note.buf);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (rc & STORE_REF_ERROR_DF_CONFLICT)
|
|
error(_("some local refs could not be updated; try running\n"
|
|
" 'git remote prune %s' to remove any old, conflicting "
|
|
"branches"), remote_name);
|
|
|
|
if (advice_fetch_show_forced_updates) {
|
|
if (!fetch_show_forced_updates) {
|
|
warning(_(warn_show_forced_updates));
|
|
} else if (forced_updates_ms > FORCED_UPDATES_DELAY_WARNING_IN_MS) {
|
|
warning(_(warn_time_show_forced_updates),
|
|
forced_updates_ms / 1000.0);
|
|
}
|
|
}
|
|
|
|
abort:
|
|
strbuf_release(¬e);
|
|
free(url);
|
|
fclose(fp);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* We would want to bypass the object transfer altogether if
|
|
* everything we are going to fetch already exists and is connected
|
|
* locally.
|
|
*/
|
|
static int check_exist_and_connected(struct ref *ref_map)
|
|
{
|
|
struct ref *rm = ref_map;
|
|
struct check_connected_options opt = CHECK_CONNECTED_INIT;
|
|
struct ref *r;
|
|
|
|
/*
|
|
* If we are deepening a shallow clone we already have these
|
|
* objects reachable. Running rev-list here will return with
|
|
* a good (0) exit status and we'll bypass the fetch that we
|
|
* really need to perform. Claiming failure now will ensure
|
|
* we perform the network exchange to deepen our history.
|
|
*/
|
|
if (deepen)
|
|
return -1;
|
|
|
|
/*
|
|
* check_connected() allows objects to merely be promised, but
|
|
* we need all direct targets to exist.
|
|
*/
|
|
for (r = rm; r; r = r->next) {
|
|
if (!has_object_file(&r->old_oid))
|
|
return -1;
|
|
}
|
|
|
|
opt.quiet = 1;
|
|
return check_connected(iterate_ref_map, &rm, &opt);
|
|
}
|
|
|
|
static int fetch_refs(struct transport *transport, struct ref *ref_map)
|
|
{
|
|
int ret = check_exist_and_connected(ref_map);
|
|
if (ret) {
|
|
trace2_region_enter("fetch", "fetch_refs", the_repository);
|
|
ret = transport_fetch_refs(transport, ref_map);
|
|
trace2_region_leave("fetch", "fetch_refs", the_repository);
|
|
}
|
|
if (!ret)
|
|
/*
|
|
* Keep the new pack's ".keep" file around to allow the caller
|
|
* time to update refs to reference the new objects.
|
|
*/
|
|
return 0;
|
|
transport_unlock_pack(transport);
|
|
return ret;
|
|
}
|
|
|
|
/* Update local refs based on the ref values fetched from a remote */
|
|
static int consume_refs(struct transport *transport, struct ref *ref_map)
|
|
{
|
|
int connectivity_checked = transport->smart_options
|
|
? transport->smart_options->connectivity_checked : 0;
|
|
int ret;
|
|
trace2_region_enter("fetch", "consume_refs", the_repository);
|
|
ret = store_updated_refs(transport->url,
|
|
transport->remote->name,
|
|
connectivity_checked,
|
|
ref_map);
|
|
transport_unlock_pack(transport);
|
|
trace2_region_leave("fetch", "consume_refs", the_repository);
|
|
return ret;
|
|
}
|
|
|
|
static int prune_refs(struct refspec *rs, struct ref *ref_map,
|
|
const char *raw_url)
|
|
{
|
|
int url_len, i, result = 0;
|
|
struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
|
|
char *url;
|
|
int summary_width = transport_summary_width(stale_refs);
|
|
const char *dangling_msg = dry_run
|
|
? _(" (%s will become dangling)")
|
|
: _(" (%s has become dangling)");
|
|
|
|
if (raw_url)
|
|
url = transport_anonymize_url(raw_url);
|
|
else
|
|
url = xstrdup("foreign");
|
|
|
|
url_len = strlen(url);
|
|
for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
|
|
;
|
|
|
|
url_len = i + 1;
|
|
if (4 < i && !strncmp(".git", url + i - 3, 4))
|
|
url_len = i - 3;
|
|
|
|
if (!dry_run) {
|
|
struct string_list refnames = STRING_LIST_INIT_NODUP;
|
|
|
|
for (ref = stale_refs; ref; ref = ref->next)
|
|
string_list_append(&refnames, ref->name);
|
|
|
|
result = delete_refs("fetch: prune", &refnames, 0);
|
|
string_list_clear(&refnames, 0);
|
|
}
|
|
|
|
if (verbosity >= 0) {
|
|
for (ref = stale_refs; ref; ref = ref->next) {
|
|
struct strbuf sb = STRBUF_INIT;
|
|
if (!shown_url) {
|
|
fprintf(stderr, _("From %.*s\n"), url_len, url);
|
|
shown_url = 1;
|
|
}
|
|
format_display(&sb, '-', _("[deleted]"), NULL,
|
|
_("(none)"), prettify_refname(ref->name),
|
|
summary_width);
|
|
fprintf(stderr, " %s\n",sb.buf);
|
|
strbuf_release(&sb);
|
|
warn_dangling_symref(stderr, dangling_msg, ref->name);
|
|
}
|
|
}
|
|
|
|
free(url);
|
|
free_refs(stale_refs);
|
|
return result;
|
|
}
|
|
|
|
static void check_not_current_branch(struct ref *ref_map)
|
|
{
|
|
struct branch *current_branch = branch_get(NULL);
|
|
|
|
if (is_bare_repository() || !current_branch)
|
|
return;
|
|
|
|
for (; ref_map; ref_map = ref_map->next)
|
|
if (ref_map->peer_ref && !strcmp(current_branch->refname,
|
|
ref_map->peer_ref->name))
|
|
die(_("Refusing to fetch into current branch %s "
|
|
"of non-bare repository"), current_branch->refname);
|
|
}
|
|
|
|
static int truncate_fetch_head(void)
|
|
{
|
|
const char *filename = git_path_fetch_head(the_repository);
|
|
FILE *fp = fopen_for_writing(filename);
|
|
|
|
if (!fp)
|
|
return error_errno(_("cannot open %s"), filename);
|
|
fclose(fp);
|
|
return 0;
|
|
}
|
|
|
|
static void set_option(struct transport *transport, const char *name, const char *value)
|
|
{
|
|
int r = transport_set_option(transport, name, value);
|
|
if (r < 0)
|
|
die(_("Option \"%s\" value \"%s\" is not valid for %s"),
|
|
name, value, transport->url);
|
|
if (r > 0)
|
|
warning(_("Option \"%s\" is ignored for %s\n"),
|
|
name, transport->url);
|
|
}
|
|
|
|
|
|
static int add_oid(const char *refname, const struct object_id *oid, int flags,
|
|
void *cb_data)
|
|
{
|
|
struct oid_array *oids = cb_data;
|
|
|
|
oid_array_append(oids, oid);
|
|
return 0;
|
|
}
|
|
|
|
static void add_negotiation_tips(struct git_transport_options *smart_options)
|
|
{
|
|
struct oid_array *oids = xcalloc(1, sizeof(*oids));
|
|
int i;
|
|
|
|
for (i = 0; i < negotiation_tip.nr; i++) {
|
|
const char *s = negotiation_tip.items[i].string;
|
|
int old_nr;
|
|
if (!has_glob_specials(s)) {
|
|
struct object_id oid;
|
|
if (get_oid(s, &oid))
|
|
die("%s is not a valid object", s);
|
|
oid_array_append(oids, &oid);
|
|
continue;
|
|
}
|
|
old_nr = oids->nr;
|
|
for_each_glob_ref(add_oid, s, oids);
|
|
if (old_nr == oids->nr)
|
|
warning("Ignoring --negotiation-tip=%s because it does not match any refs",
|
|
s);
|
|
}
|
|
smart_options->negotiation_tips = oids;
|
|
}
|
|
|
|
static struct transport *prepare_transport(struct remote *remote, int deepen)
|
|
{
|
|
struct transport *transport;
|
|
|
|
transport = transport_get(remote, NULL);
|
|
transport_set_verbosity(transport, verbosity, progress);
|
|
transport->family = family;
|
|
if (upload_pack)
|
|
set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
|
|
if (keep)
|
|
set_option(transport, TRANS_OPT_KEEP, "yes");
|
|
if (depth)
|
|
set_option(transport, TRANS_OPT_DEPTH, depth);
|
|
if (deepen && deepen_since)
|
|
set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
|
|
if (deepen && deepen_not.nr)
|
|
set_option(transport, TRANS_OPT_DEEPEN_NOT,
|
|
(const char *)&deepen_not);
|
|
if (deepen_relative)
|
|
set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
|
|
if (update_shallow)
|
|
set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
|
|
if (filter_options.choice) {
|
|
const char *spec =
|
|
expand_list_objects_filter_spec(&filter_options);
|
|
set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER, spec);
|
|
set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
|
|
}
|
|
if (negotiation_tip.nr) {
|
|
if (transport->smart_options)
|
|
add_negotiation_tips(transport->smart_options);
|
|
else
|
|
warning("Ignoring --negotiation-tip because the protocol does not support it.");
|
|
}
|
|
return transport;
|
|
}
|
|
|
|
static void backfill_tags(struct transport *transport, struct ref *ref_map)
|
|
{
|
|
int cannot_reuse;
|
|
|
|
/*
|
|
* Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
|
|
* when remote helper is used (setting it to an empty string
|
|
* is not unsetting). We could extend the remote helper
|
|
* protocol for that, but for now, just force a new connection
|
|
* without deepen-since. Similar story for deepen-not.
|
|
*/
|
|
cannot_reuse = transport->cannot_reuse ||
|
|
deepen_since || deepen_not.nr;
|
|
if (cannot_reuse) {
|
|
gsecondary = prepare_transport(transport->remote, 0);
|
|
transport = gsecondary;
|
|
}
|
|
|
|
transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
|
|
transport_set_option(transport, TRANS_OPT_DEPTH, "0");
|
|
transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
|
|
if (!fetch_refs(transport, ref_map))
|
|
consume_refs(transport, ref_map);
|
|
|
|
if (gsecondary) {
|
|
transport_disconnect(gsecondary);
|
|
gsecondary = NULL;
|
|
}
|
|
}
|
|
|
|
static int do_fetch(struct transport *transport,
|
|
struct refspec *rs)
|
|
{
|
|
struct ref *ref_map;
|
|
int autotags = (transport->remote->fetch_tags == 1);
|
|
int retcode = 0;
|
|
const struct ref *remote_refs;
|
|
struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
|
|
int must_list_refs = 1;
|
|
|
|
if (tags == TAGS_DEFAULT) {
|
|
if (transport->remote->fetch_tags == 2)
|
|
tags = TAGS_SET;
|
|
if (transport->remote->fetch_tags == -1)
|
|
tags = TAGS_UNSET;
|
|
}
|
|
|
|
/* if not appending, truncate FETCH_HEAD */
|
|
if (!append && !dry_run) {
|
|
retcode = truncate_fetch_head();
|
|
if (retcode)
|
|
goto cleanup;
|
|
}
|
|
|
|
if (rs->nr) {
|
|
int i;
|
|
|
|
refspec_ref_prefixes(rs, &ref_prefixes);
|
|
|
|
/*
|
|
* We can avoid listing refs if all of them are exact
|
|
* OIDs
|
|
*/
|
|
must_list_refs = 0;
|
|
for (i = 0; i < rs->nr; i++) {
|
|
if (!rs->items[i].exact_sha1) {
|
|
must_list_refs = 1;
|
|
break;
|
|
}
|
|
}
|
|
} else if (transport->remote && transport->remote->fetch.nr)
|
|
refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
|
|
|
|
if (tags == TAGS_SET || tags == TAGS_DEFAULT) {
|
|
must_list_refs = 1;
|
|
if (ref_prefixes.argc)
|
|
argv_array_push(&ref_prefixes, "refs/tags/");
|
|
}
|
|
|
|
if (must_list_refs) {
|
|
trace2_region_enter("fetch", "remote_refs", the_repository);
|
|
remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
|
|
trace2_region_leave("fetch", "remote_refs", the_repository);
|
|
} else
|
|
remote_refs = NULL;
|
|
|
|
argv_array_clear(&ref_prefixes);
|
|
|
|
ref_map = get_ref_map(transport->remote, remote_refs, rs,
|
|
tags, &autotags);
|
|
if (!update_head_ok)
|
|
check_not_current_branch(ref_map);
|
|
|
|
if (tags == TAGS_DEFAULT && autotags)
|
|
transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
|
|
if (prune) {
|
|
/*
|
|
* We only prune based on refspecs specified
|
|
* explicitly (via command line or configuration); we
|
|
* don't care whether --tags was specified.
|
|
*/
|
|
if (rs->nr) {
|
|
prune_refs(rs, ref_map, transport->url);
|
|
} else {
|
|
prune_refs(&transport->remote->fetch,
|
|
ref_map,
|
|
transport->url);
|
|
}
|
|
}
|
|
if (fetch_refs(transport, ref_map) || consume_refs(transport, ref_map)) {
|
|
free_refs(ref_map);
|
|
retcode = 1;
|
|
goto cleanup;
|
|
}
|
|
|
|
if (set_upstream) {
|
|
struct branch *branch = branch_get("HEAD");
|
|
struct ref *rm;
|
|
struct ref *source_ref = NULL;
|
|
|
|
/*
|
|
* We're setting the upstream configuration for the
|
|
* current branch. The relevant upstream is the
|
|
* fetched branch that is meant to be merged with the
|
|
* current one, i.e. the one fetched to FETCH_HEAD.
|
|
*
|
|
* When there are several such branches, consider the
|
|
* request ambiguous and err on the safe side by doing
|
|
* nothing and just emit a warning.
|
|
*/
|
|
for (rm = ref_map; rm; rm = rm->next) {
|
|
if (!rm->peer_ref) {
|
|
if (source_ref) {
|
|
warning(_("multiple branch detected, incompatible with --set-upstream"));
|
|
goto skip;
|
|
} else {
|
|
source_ref = rm;
|
|
}
|
|
}
|
|
}
|
|
if (source_ref) {
|
|
if (!strcmp(source_ref->name, "HEAD") ||
|
|
starts_with(source_ref->name, "refs/heads/"))
|
|
install_branch_config(0,
|
|
branch->name,
|
|
transport->remote->name,
|
|
source_ref->name);
|
|
else if (starts_with(source_ref->name, "refs/remotes/"))
|
|
warning(_("not setting upstream for a remote remote-tracking branch"));
|
|
else if (starts_with(source_ref->name, "refs/tags/"))
|
|
warning(_("not setting upstream for a remote tag"));
|
|
else
|
|
warning(_("unknown branch type"));
|
|
} else {
|
|
warning(_("no source branch found.\n"
|
|
"you need to specify exactly one branch with the --set-upstream option."));
|
|
}
|
|
}
|
|
skip:
|
|
free_refs(ref_map);
|
|
|
|
/* if neither --no-tags nor --tags was specified, do automated tag
|
|
* following ... */
|
|
if (tags == TAGS_DEFAULT && autotags) {
|
|
struct ref **tail = &ref_map;
|
|
ref_map = NULL;
|
|
find_non_local_tags(remote_refs, &ref_map, &tail);
|
|
if (ref_map)
|
|
backfill_tags(transport, ref_map);
|
|
free_refs(ref_map);
|
|
}
|
|
|
|
cleanup:
|
|
return retcode;
|
|
}
|
|
|
|
static int get_one_remote_for_fetch(struct remote *remote, void *priv)
|
|
{
|
|
struct string_list *list = priv;
|
|
if (!remote->skip_default_update)
|
|
string_list_append(list, remote->name);
|
|
return 0;
|
|
}
|
|
|
|
struct remote_group_data {
|
|
const char *name;
|
|
struct string_list *list;
|
|
};
|
|
|
|
static int get_remote_group(const char *key, const char *value, void *priv)
|
|
{
|
|
struct remote_group_data *g = priv;
|
|
|
|
if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
|
|
/* split list by white space */
|
|
while (*value) {
|
|
size_t wordlen = strcspn(value, " \t\n");
|
|
|
|
if (wordlen >= 1)
|
|
string_list_append_nodup(g->list,
|
|
xstrndup(value, wordlen));
|
|
value += wordlen + (value[wordlen] != '\0');
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int add_remote_or_group(const char *name, struct string_list *list)
|
|
{
|
|
int prev_nr = list->nr;
|
|
struct remote_group_data g;
|
|
g.name = name; g.list = list;
|
|
|
|
git_config(get_remote_group, &g);
|
|
if (list->nr == prev_nr) {
|
|
struct remote *remote = remote_get(name);
|
|
if (!remote_is_configured(remote, 0))
|
|
return 0;
|
|
string_list_append(list, remote->name);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void add_options_to_argv(struct argv_array *argv)
|
|
{
|
|
if (dry_run)
|
|
argv_array_push(argv, "--dry-run");
|
|
if (prune != -1)
|
|
argv_array_push(argv, prune ? "--prune" : "--no-prune");
|
|
if (prune_tags != -1)
|
|
argv_array_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
|
|
if (update_head_ok)
|
|
argv_array_push(argv, "--update-head-ok");
|
|
if (force)
|
|
argv_array_push(argv, "--force");
|
|
if (keep)
|
|
argv_array_push(argv, "--keep");
|
|
if (recurse_submodules == RECURSE_SUBMODULES_ON)
|
|
argv_array_push(argv, "--recurse-submodules");
|
|
else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
|
|
argv_array_push(argv, "--recurse-submodules=on-demand");
|
|
if (tags == TAGS_SET)
|
|
argv_array_push(argv, "--tags");
|
|
else if (tags == TAGS_UNSET)
|
|
argv_array_push(argv, "--no-tags");
|
|
if (verbosity >= 2)
|
|
argv_array_push(argv, "-v");
|
|
if (verbosity >= 1)
|
|
argv_array_push(argv, "-v");
|
|
else if (verbosity < 0)
|
|
argv_array_push(argv, "-q");
|
|
|
|
}
|
|
|
|
/* Fetch multiple remotes in parallel */
|
|
|
|
struct parallel_fetch_state {
|
|
const char **argv;
|
|
struct string_list *remotes;
|
|
int next, result;
|
|
};
|
|
|
|
static int fetch_next_remote(struct child_process *cp, struct strbuf *out,
|
|
void *cb, void **task_cb)
|
|
{
|
|
struct parallel_fetch_state *state = cb;
|
|
char *remote;
|
|
|
|
if (state->next < 0 || state->next >= state->remotes->nr)
|
|
return 0;
|
|
|
|
remote = state->remotes->items[state->next++].string;
|
|
*task_cb = remote;
|
|
|
|
argv_array_pushv(&cp->args, state->argv);
|
|
argv_array_push(&cp->args, remote);
|
|
cp->git_cmd = 1;
|
|
|
|
if (verbosity >= 0)
|
|
printf(_("Fetching %s\n"), remote);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int fetch_failed_to_start(struct strbuf *out, void *cb, void *task_cb)
|
|
{
|
|
struct parallel_fetch_state *state = cb;
|
|
const char *remote = task_cb;
|
|
|
|
state->result = error(_("Could not fetch %s"), remote);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fetch_finished(int result, struct strbuf *out,
|
|
void *cb, void *task_cb)
|
|
{
|
|
struct parallel_fetch_state *state = cb;
|
|
const char *remote = task_cb;
|
|
|
|
if (result) {
|
|
strbuf_addf(out, _("could not fetch '%s' (exit code: %d)\n"),
|
|
remote, result);
|
|
state->result = -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fetch_multiple(struct string_list *list, int max_children)
|
|
{
|
|
int i, result = 0;
|
|
struct argv_array argv = ARGV_ARRAY_INIT;
|
|
|
|
if (!append && !dry_run) {
|
|
int errcode = truncate_fetch_head();
|
|
if (errcode)
|
|
return errcode;
|
|
}
|
|
|
|
argv_array_pushl(&argv, "fetch", "--append", "--no-auto-gc", NULL);
|
|
add_options_to_argv(&argv);
|
|
|
|
if (max_children != 1 && list->nr != 1) {
|
|
struct parallel_fetch_state state = { argv.argv, list, 0, 0 };
|
|
|
|
argv_array_push(&argv, "--end-of-options");
|
|
result = run_processes_parallel_tr2(max_children,
|
|
&fetch_next_remote,
|
|
&fetch_failed_to_start,
|
|
&fetch_finished,
|
|
&state,
|
|
"fetch", "parallel/fetch");
|
|
|
|
if (!result)
|
|
result = state.result;
|
|
} else
|
|
for (i = 0; i < list->nr; i++) {
|
|
const char *name = list->items[i].string;
|
|
argv_array_push(&argv, name);
|
|
if (verbosity >= 0)
|
|
printf(_("Fetching %s\n"), name);
|
|
if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
|
|
error(_("Could not fetch %s"), name);
|
|
result = 1;
|
|
}
|
|
argv_array_pop(&argv);
|
|
}
|
|
|
|
argv_array_clear(&argv);
|
|
return !!result;
|
|
}
|
|
|
|
/*
|
|
* Fetching from the promisor remote should use the given filter-spec
|
|
* or inherit the default filter-spec from the config.
|
|
*/
|
|
static inline void fetch_one_setup_partial(struct remote *remote)
|
|
{
|
|
/*
|
|
* Explicit --no-filter argument overrides everything, regardless
|
|
* of any prior partial clones and fetches.
|
|
*/
|
|
if (filter_options.no_filter)
|
|
return;
|
|
|
|
/*
|
|
* If no prior partial clone/fetch and the current fetch DID NOT
|
|
* request a partial-fetch, do a normal fetch.
|
|
*/
|
|
if (!has_promisor_remote() && !filter_options.choice)
|
|
return;
|
|
|
|
/*
|
|
* If this is a partial-fetch request, we enable partial on
|
|
* this repo if not already enabled and remember the given
|
|
* filter-spec as the default for subsequent fetches to this
|
|
* remote.
|
|
*/
|
|
if (filter_options.choice) {
|
|
partial_clone_register(remote->name, &filter_options);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Do a partial-fetch from the promisor remote using either the
|
|
* explicitly given filter-spec or inherit the filter-spec from
|
|
* the config.
|
|
*/
|
|
if (!filter_options.choice)
|
|
partial_clone_get_default_filter_spec(&filter_options, remote->name);
|
|
return;
|
|
}
|
|
|
|
static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
|
|
{
|
|
struct refspec rs = REFSPEC_INIT_FETCH;
|
|
int i;
|
|
int exit_code;
|
|
int maybe_prune_tags;
|
|
int remote_via_config = remote_is_configured(remote, 0);
|
|
|
|
if (!remote)
|
|
die(_("No remote repository specified. Please, specify either a URL or a\n"
|
|
"remote name from which new revisions should be fetched."));
|
|
|
|
gtransport = prepare_transport(remote, 1);
|
|
|
|
if (prune < 0) {
|
|
/* no command line request */
|
|
if (0 <= remote->prune)
|
|
prune = remote->prune;
|
|
else if (0 <= fetch_prune_config)
|
|
prune = fetch_prune_config;
|
|
else
|
|
prune = PRUNE_BY_DEFAULT;
|
|
}
|
|
|
|
if (prune_tags < 0) {
|
|
/* no command line request */
|
|
if (0 <= remote->prune_tags)
|
|
prune_tags = remote->prune_tags;
|
|
else if (0 <= fetch_prune_tags_config)
|
|
prune_tags = fetch_prune_tags_config;
|
|
else
|
|
prune_tags = PRUNE_TAGS_BY_DEFAULT;
|
|
}
|
|
|
|
maybe_prune_tags = prune_tags_ok && prune_tags;
|
|
if (maybe_prune_tags && remote_via_config)
|
|
refspec_append(&remote->fetch, TAG_REFSPEC);
|
|
|
|
if (maybe_prune_tags && (argc || !remote_via_config))
|
|
refspec_append(&rs, TAG_REFSPEC);
|
|
|
|
for (i = 0; i < argc; i++) {
|
|
if (!strcmp(argv[i], "tag")) {
|
|
char *tag;
|
|
i++;
|
|
if (i >= argc)
|
|
die(_("You need to specify a tag name."));
|
|
|
|
tag = xstrfmt("refs/tags/%s:refs/tags/%s",
|
|
argv[i], argv[i]);
|
|
refspec_append(&rs, tag);
|
|
free(tag);
|
|
} else {
|
|
refspec_append(&rs, argv[i]);
|
|
}
|
|
}
|
|
|
|
if (server_options.nr)
|
|
gtransport->server_options = &server_options;
|
|
|
|
sigchain_push_common(unlock_pack_on_signal);
|
|
atexit(unlock_pack);
|
|
sigchain_push(SIGPIPE, SIG_IGN);
|
|
exit_code = do_fetch(gtransport, &rs);
|
|
sigchain_pop(SIGPIPE);
|
|
refspec_clear(&rs);
|
|
transport_disconnect(gtransport);
|
|
gtransport = NULL;
|
|
return exit_code;
|
|
}
|
|
|
|
int cmd_fetch(int argc, const char **argv, const char *prefix)
|
|
{
|
|
int i;
|
|
struct string_list list = STRING_LIST_INIT_DUP;
|
|
struct remote *remote = NULL;
|
|
int result = 0;
|
|
int prune_tags_ok = 1;
|
|
struct argv_array argv_gc_auto = ARGV_ARRAY_INIT;
|
|
|
|
packet_trace_identity("fetch");
|
|
|
|
fetch_if_missing = 0;
|
|
|
|
/* Record the command line for the reflog */
|
|
strbuf_addstr(&default_rla, "fetch");
|
|
for (i = 1; i < argc; i++)
|
|
strbuf_addf(&default_rla, " %s", argv[i]);
|
|
|
|
fetch_config_from_gitmodules(&submodule_fetch_jobs_config,
|
|
&recurse_submodules);
|
|
git_config(git_fetch_config, NULL);
|
|
|
|
argc = parse_options(argc, argv, prefix,
|
|
builtin_fetch_options, builtin_fetch_usage, 0);
|
|
|
|
if (deepen_relative) {
|
|
if (deepen_relative < 0)
|
|
die(_("Negative depth in --deepen is not supported"));
|
|
if (depth)
|
|
die(_("--deepen and --depth are mutually exclusive"));
|
|
depth = xstrfmt("%d", deepen_relative);
|
|
}
|
|
if (unshallow) {
|
|
if (depth)
|
|
die(_("--depth and --unshallow cannot be used together"));
|
|
else if (!is_repository_shallow(the_repository))
|
|
die(_("--unshallow on a complete repository does not make sense"));
|
|
else
|
|
depth = xstrfmt("%d", INFINITE_DEPTH);
|
|
}
|
|
|
|
/* no need to be strict, transport_set_option() will validate it again */
|
|
if (depth && atoi(depth) < 1)
|
|
die(_("depth %s is not a positive number"), depth);
|
|
if (depth || deepen_since || deepen_not.nr)
|
|
deepen = 1;
|
|
|
|
if (filter_options.choice && !has_promisor_remote())
|
|
die("--filter can only be used when extensions.partialClone is set");
|
|
|
|
if (all) {
|
|
if (argc == 1)
|
|
die(_("fetch --all does not take a repository argument"));
|
|
else if (argc > 1)
|
|
die(_("fetch --all does not make sense with refspecs"));
|
|
(void) for_each_remote(get_one_remote_for_fetch, &list);
|
|
} else if (argc == 0) {
|
|
/* No arguments -- use default remote */
|
|
remote = remote_get(NULL);
|
|
} else if (multiple) {
|
|
/* All arguments are assumed to be remotes or groups */
|
|
for (i = 0; i < argc; i++)
|
|
if (!add_remote_or_group(argv[i], &list))
|
|
die(_("No such remote or remote group: %s"), argv[i]);
|
|
} else {
|
|
/* Single remote or group */
|
|
(void) add_remote_or_group(argv[0], &list);
|
|
if (list.nr > 1) {
|
|
/* More than one remote */
|
|
if (argc > 1)
|
|
die(_("Fetching a group and specifying refspecs does not make sense"));
|
|
} else {
|
|
/* Zero or one remotes */
|
|
remote = remote_get(argv[0]);
|
|
prune_tags_ok = (argc == 1);
|
|
argc--;
|
|
argv++;
|
|
}
|
|
}
|
|
|
|
if (remote) {
|
|
if (filter_options.choice || has_promisor_remote())
|
|
fetch_one_setup_partial(remote);
|
|
result = fetch_one(remote, argc, argv, prune_tags_ok);
|
|
} else {
|
|
int max_children = max_jobs;
|
|
|
|
if (filter_options.choice)
|
|
die(_("--filter can only be used with the remote "
|
|
"configured in extensions.partialclone"));
|
|
|
|
if (max_children < 0)
|
|
max_children = fetch_parallel_config;
|
|
|
|
/* TODO should this also die if we have a previous partial-clone? */
|
|
result = fetch_multiple(&list, max_children);
|
|
}
|
|
|
|
if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
|
|
struct argv_array options = ARGV_ARRAY_INIT;
|
|
int max_children = max_jobs;
|
|
|
|
if (max_children < 0)
|
|
max_children = submodule_fetch_jobs_config;
|
|
if (max_children < 0)
|
|
max_children = fetch_parallel_config;
|
|
|
|
add_options_to_argv(&options);
|
|
result = fetch_populated_submodules(the_repository,
|
|
&options,
|
|
submodule_prefix,
|
|
recurse_submodules,
|
|
recurse_submodules_default,
|
|
verbosity < 0,
|
|
max_children);
|
|
argv_array_clear(&options);
|
|
}
|
|
|
|
string_list_clear(&list, 0);
|
|
|
|
prepare_repo_settings(the_repository);
|
|
if (the_repository->settings.fetch_write_commit_graph) {
|
|
int commit_graph_flags = COMMIT_GRAPH_WRITE_SPLIT;
|
|
struct split_commit_graph_opts split_opts;
|
|
memset(&split_opts, 0, sizeof(struct split_commit_graph_opts));
|
|
|
|
if (progress)
|
|
commit_graph_flags |= COMMIT_GRAPH_WRITE_PROGRESS;
|
|
|
|
write_commit_graph_reachable(get_object_directory(),
|
|
commit_graph_flags,
|
|
&split_opts);
|
|
}
|
|
|
|
close_object_store(the_repository->objects);
|
|
|
|
if (enable_auto_gc) {
|
|
argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
|
|
if (verbosity < 0)
|
|
argv_array_push(&argv_gc_auto, "--quiet");
|
|
run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
|
|
argv_array_clear(&argv_gc_auto);
|
|
}
|
|
|
|
return result;
|
|
}
|