X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-bundle.c;h=d1635a0a6b009ecb6706084828abd0e3928f2b8d;hb=9aae177a4adff326421e55c7c0f3138de15ce2c1;hp=ca3de60e44267e8592b86a9632a25f66c5eedea8;hpb=d58c6184e345b9c8c8bfe8cc3eb1bbfe2f5ee4f9;p=git.git

diff --git a/builtin-bundle.c b/builtin-bundle.c
index ca3de60e4..d1635a0a6 100644
--- a/builtin-bundle.c
+++ b/builtin-bundle.c
@@ -4,7 +4,7 @@
 #include "diff.h"
 #include "revision.h"
 #include "list-objects.h"
-#include "exec_cmd.h"
+#include "run-command.h"
 
 /*
  * Basic handler for bundle files to connect repositories via sneakernet.
@@ -87,7 +87,7 @@ static int read_header(const char *path, struct bundle_header *header) {
 		if (buffer[len - 1] == '\n')
 			buffer[len - 1] = '\0';
 		if (get_sha1_hex(buffer + offset, sha1)) {
-			warn("unrecognized header: %s", buffer);
+			warning("unrecognized header: %s", buffer);
 			continue;
 		}
 		delim = buffer[40 + offset];
@@ -99,67 +99,6 @@ static int read_header(const char *path, struct bundle_header *header) {
 	return fd;
 }
 
-/* if in && *in >= 0, take that as input file descriptor instead */
-static int fork_with_pipe(const char **argv, int *in, int *out)
-{
-	int needs_in, needs_out;
-	int fdin[2], fdout[2], pid;
-
-	needs_in = in && *in < 0;
-	if (needs_in) {
-		if (pipe(fdin) < 0)
-			return error("could not setup pipe");
-		*in = fdin[1];
-	}
-
-	needs_out = out && *out < 0;
-	if (needs_out) {
-		if (pipe(fdout) < 0)
-			return error("could not setup pipe");
-		*out = fdout[0];
-	}
-
-	if ((pid = fork()) < 0) {
-		if (needs_in) {
-			close(fdin[0]);
-			close(fdin[1]);
-		}
-		if (needs_out) {
-			close(fdout[0]);
-			close(fdout[1]);
-		}
-		return error("could not fork");
-	}
-	if (!pid) {
-		if (needs_in) {
-			dup2(fdin[0], 0);
-			close(fdin[0]);
-			close(fdin[1]);
-		} else if (in) {
-			dup2(*in, 0);
-			close(*in);
-		}
-		if (needs_out) {
-			dup2(fdout[1], 1);
-			close(fdout[0]);
-			close(fdout[1]);
-		} else if (out) {
-			dup2(*out, 1);
-			close(*out);
-		}
-		exit(execv_git_cmd(argv));
-	}
-	if (needs_in)
-		close(fdin[0]);
-	else if (in)
-		close(*in);
-	if (needs_out)
-		close(fdout[1]);
-	else if (out)
-		close(*out);
-	return pid;
-}
-
 static int list_refs(struct ref_list *r, int argc, const char **argv)
 {
 	int i;
@@ -263,14 +202,15 @@ static int create_bundle(struct bundle_header *header, const char *path,
 	int bundle_fd = -1;
 	const char **argv_boundary = xmalloc((argc + 4) * sizeof(const char *));
 	const char **argv_pack = xmalloc(5 * sizeof(const char *));
-	int pid, in, out, i, status;
+	int i, ref_count = 0;
 	char buffer[1024];
 	struct rev_info revs;
+	struct child_process rls;
 
 	bundle_fd = (!strcmp(path, "-") ? 1 :
-			open(path, O_CREAT | O_WRONLY, 0666));
+			open(path, O_CREAT | O_EXCL | O_WRONLY, 0666));
 	if (bundle_fd < 0)
-		return error("Could not write to '%s'", path);
+		return error("Could not create '%s': %s", path, strerror(errno));
 
 	/* write signature */
 	write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
@@ -285,11 +225,13 @@ static int create_bundle(struct bundle_header *header, const char *path,
 	argv_boundary[1] = "--boundary";
 	argv_boundary[2] = "--pretty=oneline";
 	argv_boundary[argc + 2] = NULL;
-	out = -1;
-	pid = fork_with_pipe(argv_boundary, NULL, &out);
-	if (pid < 0)
+	memset(&rls, 0, sizeof(rls));
+	rls.argv = argv_boundary;
+	rls.out = -1;
+	rls.git_cmd = 1;
+	if (start_command(&rls))
 		return -1;
-	while ((i = read_string(out, buffer, sizeof(buffer))) > 0) {
+	while ((i = read_string(rls.out, buffer, sizeof(buffer))) > 0) {
 		unsigned char sha1[20];
 		if (buffer[0] == '-') {
 			write_or_die(bundle_fd, buffer, i);
@@ -303,11 +245,8 @@ static int create_bundle(struct bundle_header *header, const char *path,
 			object->flags |= SHOWN;
 		}
 	}
-	while ((i = waitpid(pid, &status, 0)) < 0)
-		if (errno != EINTR)
-			return error("rev-list died");
-	if (!WIFEXITED(status) || WEXITSTATUS(status))
-		return error("rev-list died %d", WEXITSTATUS(status));
+	if (finish_command(&rls))
+		return error("rev-list died");
 
 	/* write references */
 	argc = setup_revisions(argc, argv, &revs, NULL);
@@ -328,15 +267,20 @@ static int create_bundle(struct bundle_header *header, const char *path,
 		 * other limiting options could have prevented all the tips
 		 * from getting output.
 		 */
-		if (!(e->item->flags & SHOWN))
-			die("ref '%s' is excluded by the rev-list options",
+		if (!(e->item->flags & SHOWN)) {
+			warning("ref '%s' is excluded by the rev-list options",
 				e->name);
+			continue;
+		}
+		ref_count++;
 		write_or_die(bundle_fd, sha1_to_hex(e->item->sha1), 40);
 		write_or_die(bundle_fd, " ", 1);
 		write_or_die(bundle_fd, ref, strlen(ref));
 		write_or_die(bundle_fd, "\n", 1);
 		free(ref);
 	}
+	if (!ref_count)
+		die ("Refusing to create empty bundle.");
 
 	/* end header */
 	write_or_die(bundle_fd, "\n", 1);
@@ -347,26 +291,23 @@ static int create_bundle(struct bundle_header *header, const char *path,
 	argv_pack[2] = "--stdout";
 	argv_pack[3] = "--thin";
 	argv_pack[4] = NULL;
-	in = -1;
-	out = bundle_fd;
-	pid = fork_with_pipe(argv_pack, &in, &out);
-	if (pid < 0)
+	memset(&rls, 0, sizeof(rls));
+	rls.argv = argv_pack;
+	rls.in = -1;
+	rls.out = bundle_fd;
+	rls.git_cmd = 1;
+	if (start_command(&rls))
 		return error("Could not spawn pack-objects");
 	for (i = 0; i < revs.pending.nr; i++) {
 		struct object *object = revs.pending.objects[i].item;
 		if (object->flags & UNINTERESTING)
-			write(in, "^", 1);
-		write(in, sha1_to_hex(object->sha1), 40);
-		write(in, "\n", 1);
+			write(rls.in, "^", 1);
+		write(rls.in, sha1_to_hex(object->sha1), 40);
+		write(rls.in, "\n", 1);
 	}
-	close(in);
-	while (waitpid(pid, &status, 0) < 0)
-		if (errno != EINTR)
-			return -1;
-	if (!WIFEXITED(status) || WEXITSTATUS(status))
+	if (finish_command(&rls))
 		return error ("pack-objects died");
-
-	return status;
+	return 0;
 }
 
 static int unbundle(struct bundle_header *header, int bundle_fd,
@@ -374,22 +315,17 @@ static int unbundle(struct bundle_header *header, int bundle_fd,
 {
 	const char *argv_index_pack[] = {"index-pack",
 		"--fix-thin", "--stdin", NULL};
-	int pid, status, dev_null;
+	struct child_process ip;
 
 	if (verify_bundle(header, 0))
 		return -1;
-	dev_null = open("/dev/null", O_WRONLY);
-	if (dev_null < 0)
-		return error("Could not open /dev/null");
-	pid = fork_with_pipe(argv_index_pack, &bundle_fd, &dev_null);
-	if (pid < 0)
-		return error("Could not spawn index-pack");
-	while (waitpid(pid, &status, 0) < 0)
-		if (errno != EINTR)
-			return error("index-pack died");
-	if (!WIFEXITED(status) || WEXITSTATUS(status))
-		return error("index-pack exited with status %d",
-				WEXITSTATUS(status));
+	memset(&ip, 0, sizeof(ip));
+	ip.argv = argv_index_pack;
+	ip.in = bundle_fd;
+	ip.no_stdout = 1;
+	ip.git_cmd = 1;
+	if (run_command(&ip))
+		return error("index-pack died");
 	return list_heads(header, argc, argv);
 }