chore(3p/git): Unvendor git and track patches instead r/2903

This was vendored a long time ago under the expectation that keeping
it in sync with cgit would be easier this way, but it has proven not
to be a big issue.

On the other hand, a vendored copy of git is an annoying maintenance
burden. It is much easier to rebase the single (dottime) patch that we
have.

This removes the vendored copy of git and instead passes the git
source code to cgit via `pkgs.srcOnly`, which includes the applied
patch so that cgit can continue rendering dottime.

Change-Id: If31f62dea7ce688fd1b9050204e9378019775f2b

1 files changed, 0 insertions, 216 deletions

diff --git a/third_party/git/sub-process.c b/third_party/git/sub-process.c
deleted file mode 100644
index dfa790d3ff91..000000000000
--- a/third_party/git/sub-process.c
+++ /dev/null
@@ -1,216 +0,0 @@
-/*
- * Generic implementation of background process infrastructure.
- */
-#include "sub-process.h"
-#include "sigchain.h"
-#include "pkt-line.h"
-
-int cmd2process_cmp(const void *unused_cmp_data,
-		    const struct hashmap_entry *eptr,
-		    const struct hashmap_entry *entry_or_key,
-		    const void *unused_keydata)
-{
-	const struct subprocess_entry *e1, *e2;
-
-	e1 = container_of(eptr, const struct subprocess_entry, ent);
-	e2 = container_of(entry_or_key, const struct subprocess_entry, ent);
-
-	return strcmp(e1->cmd, e2->cmd);
-}
-
-struct subprocess_entry *subprocess_find_entry(struct hashmap *hashmap, const char *cmd)
-{
-	struct subprocess_entry key;
-
-	hashmap_entry_init(&key.ent, strhash(cmd));
-	key.cmd = cmd;
-	return hashmap_get_entry(hashmap, &key, ent, NULL);
-}
-
-int subprocess_read_status(int fd, struct strbuf *status)
-{
-	struct strbuf **pair;
-	char *line;
-	int len;
-
-	for (;;) {
-		len = packet_read_line_gently(fd, NULL, &line);
-		if ((len < 0) || !line)
-			break;
-		pair = strbuf_split_str(line, '=', 2);
-		if (pair[0] && pair[0]->len && pair[1]) {
-			/* the last "status=<foo>" line wins */
-			if (!strcmp(pair[0]->buf, "status=")) {
-				strbuf_reset(status);
-				strbuf_addbuf(status, pair[1]);
-			}
-		}
-		strbuf_list_free(pair);
-	}
-
-	return (len < 0) ? len : 0;
-}
-
-void subprocess_stop(struct hashmap *hashmap, struct subprocess_entry *entry)
-{
-	if (!entry)
-		return;
-
-	entry->process.clean_on_exit = 0;
-	kill(entry->process.pid, SIGTERM);
-	finish_command(&entry->process);
-
-	hashmap_remove(hashmap, &entry->ent, NULL);
-}
-
-static void subprocess_exit_handler(struct child_process *process)
-{
-	sigchain_push(SIGPIPE, SIG_IGN);
-	/* Closing the pipe signals the subprocess to initiate a shutdown. */
-	close(process->in);
-	close(process->out);
-	sigchain_pop(SIGPIPE);
-	/* Finish command will wait until the shutdown is complete. */
-	finish_command(process);
-}
-
-int subprocess_start(struct hashmap *hashmap, struct subprocess_entry *entry, const char *cmd,
-	subprocess_start_fn startfn)
-{
-	int err;
-	struct child_process *process;
-
-	entry->cmd = cmd;
-	process = &entry->process;
-
-	child_process_init(process);
-	strvec_push(&process->args, cmd);
-	process->use_shell = 1;
-	process->in = -1;
-	process->out = -1;
-	process->clean_on_exit = 1;
-	process->clean_on_exit_handler = subprocess_exit_handler;
-	process->trace2_child_class = "subprocess";
-
-	err = start_command(process);
-	if (err) {
-		error("cannot fork to run subprocess '%s'", cmd);
-		return err;
-	}
-
-	hashmap_entry_init(&entry->ent, strhash(cmd));
-
-	err = startfn(entry);
-	if (err) {
-		error("initialization for subprocess '%s' failed", cmd);
-		subprocess_stop(hashmap, entry);
-		return err;
-	}
-
-	hashmap_add(hashmap, &entry->ent);
-	return 0;
-}
-
-static int handshake_version(struct child_process *process,
-			     const char *welcome_prefix, int *versions,
-			     int *chosen_version)
-{
-	int version_scratch;
-	int i;
-	char *line;
-	const char *p;
-
-	if (!chosen_version)
-		chosen_version = &version_scratch;
-
-	if (packet_write_fmt_gently(process->in, "%s-client\n",
-				    welcome_prefix))
-		return error("Could not write client identification");
-	for (i = 0; versions[i]; i++) {
-		if (packet_write_fmt_gently(process->in, "version=%d\n",
-					    versions[i]))
-			return error("Could not write requested version");
-	}
-	if (packet_flush_gently(process->in))
-		return error("Could not write flush packet");
-
-	if (!(line = packet_read_line(process->out, NULL)) ||
-	    !skip_prefix(line, welcome_prefix, &p) ||
-	    strcmp(p, "-server"))
-		return error("Unexpected line '%s', expected %s-server",
-			     line ? line : "<flush packet>", welcome_prefix);
-	if (!(line = packet_read_line(process->out, NULL)) ||
-	    !skip_prefix(line, "version=", &p) ||
-	    strtol_i(p, 10, chosen_version))
-		return error("Unexpected line '%s', expected version",
-			     line ? line : "<flush packet>");
-	if ((line = packet_read_line(process->out, NULL)))
-		return error("Unexpected line '%s', expected flush", line);
-
-	/* Check to make sure that the version received is supported */
-	for (i = 0; versions[i]; i++) {
-		if (versions[i] == *chosen_version)
-			break;
-	}
-	if (!versions[i])
-		return error("Version %d not supported", *chosen_version);
-
-	return 0;
-}
-
-static int handshake_capabilities(struct child_process *process,
-				  struct subprocess_capability *capabilities,
-				  unsigned int *supported_capabilities)
-{
-	int i;
-	char *line;
-
-	for (i = 0; capabilities[i].name; i++) {
-		if (packet_write_fmt_gently(process->in, "capability=%s\n",
-					    capabilities[i].name))
-			return error("Could not write requested capability");
-	}
-	if (packet_flush_gently(process->in))
-		return error("Could not write flush packet");
-
-	while ((line = packet_read_line(process->out, NULL))) {
-		const char *p;
-		if (!skip_prefix(line, "capability=", &p))
-			continue;
-
-		for (i = 0;
-		     capabilities[i].name && strcmp(p, capabilities[i].name);
-		     i++)
-			;
-		if (capabilities[i].name) {
-			if (supported_capabilities)
-				*supported_capabilities |= capabilities[i].flag;
-		} else {
-			die("subprocess '%s' requested unsupported capability '%s'",
-			    process->argv[0], p);
-		}
-	}
-
-	return 0;
-}
-
-int subprocess_handshake(struct subprocess_entry *entry,
-			 const char *welcome_prefix,
-			 int *versions,
-			 int *chosen_version,
-			 struct subprocess_capability *capabilities,
-			 unsigned int *supported_capabilities)
-{
-	int retval;
-	struct child_process *process = &entry->process;
-
-	sigchain_push(SIGPIPE, SIG_IGN);
-
-	retval = handshake_version(process, welcome_prefix, versions,
-				   chosen_version) ||
-		 handshake_capabilities(process, capabilities,
-					supported_capabilities);
-
-	sigchain_pop(SIGPIPE);
-	return retval;
-}