summaryrefslogtreecommitdiffstats
path: root/builtin/upload-archive.c
diff options
context:
space:
mode:
Diffstat (limited to 'builtin/upload-archive.c')
-rw-r--r--builtin/upload-archive.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/builtin/upload-archive.c b/builtin/upload-archive.c
new file mode 100644
index 0000000..1b09e5e
--- /dev/null
+++ b/builtin/upload-archive.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2006 Franck Bui-Huu
+ */
+#include "builtin.h"
+#include "archive.h"
+#include "path.h"
+#include "pkt-line.h"
+#include "sideband.h"
+#include "repository.h"
+#include "run-command.h"
+#include "strvec.h"
+
+static const char upload_archive_usage[] =
+ "git upload-archive <repository>";
+
+static const char deadchild[] =
+"git upload-archive: archiver died with error";
+
+#define MAX_ARGS (64)
+
+int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix)
+{
+ struct strvec sent_argv = STRVEC_INIT;
+ const char *arg_cmd = "argument ";
+
+ if (argc != 2 || !strcmp(argv[1], "-h"))
+ usage(upload_archive_usage);
+
+ if (!enter_repo(argv[1], 0))
+ die("'%s' does not appear to be a git repository", argv[1]);
+
+ init_archivers();
+
+ /* put received options in sent_argv[] */
+ strvec_push(&sent_argv, "git-upload-archive");
+ for (;;) {
+ char *buf = packet_read_line(0, NULL);
+ if (!buf)
+ break; /* got a flush */
+ if (sent_argv.nr > MAX_ARGS)
+ die("Too many options (>%d)", MAX_ARGS - 1);
+
+ if (!starts_with(buf, arg_cmd))
+ die("'argument' token or flush expected");
+ strvec_push(&sent_argv, buf + strlen(arg_cmd));
+ }
+
+ /* parse all options sent by the client */
+ return write_archive(sent_argv.nr, sent_argv.v, prefix,
+ the_repository, NULL, 1);
+}
+
+__attribute__((format (printf, 1, 2)))
+static void error_clnt(const char *fmt, ...)
+{
+ struct strbuf buf = STRBUF_INIT;
+ va_list params;
+
+ va_start(params, fmt);
+ strbuf_vaddf(&buf, fmt, params);
+ va_end(params);
+ send_sideband(1, 3, buf.buf, buf.len, LARGE_PACKET_MAX);
+ die("sent error to the client: %s", buf.buf);
+}
+
+static ssize_t process_input(int child_fd, int band)
+{
+ char buf[16384];
+ ssize_t sz = read(child_fd, buf, sizeof(buf));
+ if (sz < 0) {
+ if (errno != EAGAIN && errno != EINTR)
+ error_clnt("read error: %s\n", strerror(errno));
+ return sz;
+ }
+ send_sideband(1, band, buf, sz, LARGE_PACKET_MAX);
+ return sz;
+}
+
+int cmd_upload_archive(int argc, const char **argv, const char *prefix)
+{
+ struct child_process writer = CHILD_PROCESS_INIT;
+
+ BUG_ON_NON_EMPTY_PREFIX(prefix);
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage(upload_archive_usage);
+
+ /*
+ * Set up sideband subprocess.
+ *
+ * We (parent) monitor and read from child, sending its fd#1 and fd#2
+ * multiplexed out to our fd#1. If the child dies, we tell the other
+ * end over channel #3.
+ */
+ writer.out = writer.err = -1;
+ writer.git_cmd = 1;
+ strvec_push(&writer.args, "upload-archive--writer");
+ strvec_pushv(&writer.args, argv + 1);
+ if (start_command(&writer)) {
+ int err = errno;
+ packet_write_fmt(1, "NACK unable to spawn subprocess\n");
+ die("upload-archive: %s", strerror(err));
+ }
+
+ packet_write_fmt(1, "ACK\n");
+ packet_flush(1);
+
+ while (1) {
+ struct pollfd pfd[2];
+
+ pfd[0].fd = writer.out;
+ pfd[0].events = POLLIN;
+ pfd[1].fd = writer.err;
+ pfd[1].events = POLLIN;
+ if (poll(pfd, 2, -1) < 0) {
+ if (errno != EINTR) {
+ error_errno("poll failed resuming");
+ sleep(1);
+ }
+ continue;
+ }
+ if (pfd[1].revents & POLLIN)
+ /* Status stream ready */
+ if (process_input(pfd[1].fd, 2))
+ continue;
+ if (pfd[0].revents & POLLIN)
+ /* Data stream ready */
+ if (process_input(pfd[0].fd, 1))
+ continue;
+
+ if (finish_command(&writer))
+ error_clnt("%s", deadchild);
+ packet_flush(1);
+ break;
+ }
+ return 0;
+}