#include "archive.h"
#include "pkt-line.h"
#include "sideband.h"
+#include "run-command.h"
+#include "argv-array.h"
static const char upload_archive_usage[] =
"git upload-archive <repo>";
static const char deadchild[] =
"git upload-archive: archiver died with error";
-static const char lostchild[] =
-"git upload-archive: archiver process was lost";
-
#define MAX_ARGS (64)
-static int run_upload_archive(int argc, const char **argv, const char *prefix)
+int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix)
{
- const char *sent_argv[MAX_ARGS];
+ struct argv_array sent_argv = ARGV_ARRAY_INIT;
const char *arg_cmd = "argument ";
- char *p, buf[4096];
- int sent_argc;
- int len;
if (argc != 2)
usage(upload_archive_usage);
- if (strlen(argv[1]) + 1 > sizeof(buf))
- die("insanely long repository name");
-
- strcpy(buf, argv[1]); /* enter-repo smudges its argument */
-
- if (!enter_repo(buf, 0))
- die("'%s' does not appear to be a git repository", buf);
+ if (!enter_repo(argv[1], 0))
+ die("'%s' does not appear to be a git repository", argv[1]);
/* put received options in sent_argv[] */
- sent_argc = 1;
- sent_argv[0] = "git-upload-archive";
- for (p = buf;;) {
- /* This will die if not enough free space in buf */
- len = packet_read_line(0, p, (buf + sizeof buf) - p);
- if (len == 0)
+ argv_array_push(&sent_argv, "git-upload-archive");
+ for (;;) {
+ char *buf = packet_read_line(0, NULL);
+ if (!buf)
break; /* got a flush */
- if (sent_argc > MAX_ARGS - 2)
- die("Too many options (>%d)", MAX_ARGS - 2);
+ if (sent_argv.argc > MAX_ARGS)
+ die("Too many options (>%d)", MAX_ARGS - 1);
- if (p[len-1] == '\n') {
- p[--len] = 0;
- }
- if (len < strlen(arg_cmd) ||
- strncmp(arg_cmd, p, strlen(arg_cmd)))
+ if (prefixcmp(buf, arg_cmd))
die("'argument' token or flush expected");
-
- len -= strlen(arg_cmd);
- memmove(p, p + strlen(arg_cmd), len);
- sent_argv[sent_argc++] = p;
- p += len;
- *p++ = 0;
+ argv_array_push(&sent_argv, buf + strlen(arg_cmd));
}
- sent_argv[sent_argc] = NULL;
/* parse all options sent by the client */
- return write_archive(sent_argc, sent_argv, prefix, 0, NULL, 1);
+ return write_archive(sent_argv.argc, sent_argv.argv, prefix, 0, NULL, 1);
}
__attribute__((format (printf, 1, 2)))
int cmd_upload_archive(int argc, const char **argv, const char *prefix)
{
- pid_t writer;
- int fd1[2], fd2[2];
+ struct child_process writer = { argv };
+
/*
* Set up sideband subprocess.
*
* multiplexed out to our fd#1. If the child dies, we tell the other
* end over channel #3.
*/
- if (pipe(fd1) < 0 || pipe(fd2) < 0) {
+ argv[0] = "upload-archive--writer";
+ writer.out = writer.err = -1;
+ writer.git_cmd = 1;
+ if (start_command(&writer)) {
int err = errno;
- packet_write(1, "NACK pipe failed on the remote side\n");
+ packet_write(1, "NACK unable to spawn subprocess\n");
die("upload-archive: %s", strerror(err));
}
- writer = fork();
- if (writer < 0) {
- int err = errno;
- packet_write(1, "NACK fork failed on the remote side\n");
- die("upload-archive: %s", strerror(err));
- }
- if (!writer) {
- /* child - connect fd#1 and fd#2 to the pipe */
- dup2(fd1[1], 1);
- dup2(fd2[1], 2);
- close(fd1[1]); close(fd2[1]);
- close(fd1[0]); close(fd2[0]); /* we do not read from pipe */
-
- exit(run_upload_archive(argc, argv, prefix));
- }
- /* parent - read from child, multiplex and send out to fd#1 */
- close(fd1[1]); close(fd2[1]); /* we do not write to pipe */
packet_write(1, "ACK\n");
packet_flush(1);
while (1) {
struct pollfd pfd[2];
- int status;
- pfd[0].fd = fd1[0];
+ pfd[0].fd = writer.out;
pfd[0].events = POLLIN;
- pfd[1].fd = fd2[0];
+ pfd[1].fd = writer.err;
pfd[1].events = POLLIN;
if (poll(pfd, 2, -1) < 0) {
if (errno != EINTR) {
if (process_input(pfd[0].fd, 1))
continue;
- if (waitpid(writer, &status, 0) < 0)
- error_clnt("%s", lostchild);
- else if (!WIFEXITED(status) || WEXITSTATUS(status) > 0)
+ if (finish_command(&writer))
error_clnt("%s", deadchild);
packet_flush(1);
break;