mirror of
https://github.com/git/git.git
synced 2024-11-08 10:13:18 +01:00
c09cd77ea2
The POSIX-function fork is not supported on Windows. Use our start_command API instead. As this is the last call-site that depends on the fork-stub in compat/mingw.h, remove that as well. Add an undocumented flag to git-archive that tells it that the action originated from a remote, so features can be disabled. Thanks to Jeff King for work on this part. Remove the NOT_MINGW-prereq for t5000, as git-archive --remote now works. Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com> Helped-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
/*
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* Copyright (c) 2006 Franck Bui-Huu
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*/
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#include "cache.h"
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#include "builtin.h"
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#include "archive.h"
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#include "pkt-line.h"
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#include "sideband.h"
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#include "run-command.h"
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static const char upload_archive_usage[] =
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"git upload-archive <repo>";
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static const char deadchild[] =
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"git upload-archive: archiver died with error";
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static const char lostchild[] =
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"git upload-archive: archiver process was lost";
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#define MAX_ARGS (64)
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static void prepare_argv(const char **sent_argv, const char **argv)
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{
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const char *arg_cmd = "argument ";
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char *p, buf[4096];
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int sent_argc;
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int len;
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/* put received options in sent_argv[] */
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sent_argc = 2;
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sent_argv[0] = "archive";
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sent_argv[1] = "--remote-request";
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for (p = buf;;) {
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/* This will die if not enough free space in buf */
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len = packet_read_line(0, p, (buf + sizeof buf) - p);
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if (len == 0)
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break; /* got a flush */
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if (sent_argc > MAX_ARGS - 2)
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die("Too many options (>%d)", MAX_ARGS - 2);
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if (p[len-1] == '\n') {
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p[--len] = 0;
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}
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if (len < strlen(arg_cmd) ||
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strncmp(arg_cmd, p, strlen(arg_cmd)))
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die("'argument' token or flush expected");
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len -= strlen(arg_cmd);
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memmove(p, p + strlen(arg_cmd), len);
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sent_argv[sent_argc++] = p;
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p += len;
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*p++ = 0;
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}
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sent_argv[sent_argc] = NULL;
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}
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__attribute__((format (printf, 1, 2)))
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static void error_clnt(const char *fmt, ...)
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{
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char buf[1024];
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va_list params;
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int len;
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va_start(params, fmt);
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len = vsprintf(buf, fmt, params);
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va_end(params);
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send_sideband(1, 3, buf, len, LARGE_PACKET_MAX);
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die("sent error to the client: %s", buf);
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}
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static ssize_t process_input(int child_fd, int band)
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{
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char buf[16384];
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ssize_t sz = read(child_fd, buf, sizeof(buf));
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if (sz < 0) {
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if (errno != EAGAIN && errno != EINTR)
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error_clnt("read error: %s\n", strerror(errno));
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return sz;
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}
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send_sideband(1, band, buf, sz, LARGE_PACKET_MAX);
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return sz;
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}
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int cmd_upload_archive(int argc, const char **argv, const char *prefix)
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{
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const char *sent_argv[MAX_ARGS];
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struct child_process cld = { sent_argv };
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cld.out = cld.err = -1;
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cld.git_cmd = 1;
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if (argc != 2)
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usage(upload_archive_usage);
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if (!enter_repo(argv[1], 0))
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die("'%s' does not appear to be a git repository", argv[1]);
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prepare_argv(sent_argv, argv);
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if (start_command(&cld)) {
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int err = errno;
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packet_write(1, "NACK fork failed on the remote side\n");
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die("upload-archive: %s", strerror(err));
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}
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/* parent - read from child, multiplex and send out to fd#1 */
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packet_write(1, "ACK\n");
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packet_flush(1);
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while (1) {
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struct pollfd pfd[2];
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int status;
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pfd[0].fd = cld.out;
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pfd[0].events = POLLIN;
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pfd[1].fd = cld.err;
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pfd[1].events = POLLIN;
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if (poll(pfd, 2, -1) < 0) {
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if (errno != EINTR) {
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error("poll failed resuming: %s",
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strerror(errno));
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sleep(1);
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}
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continue;
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}
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if (pfd[1].revents & POLLIN)
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/* Status stream ready */
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if (process_input(pfd[1].fd, 2))
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continue;
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if (pfd[0].revents & POLLIN)
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/* Data stream ready */
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if (process_input(pfd[0].fd, 1))
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continue;
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if (waitpid(cld.pid, &status, 0) < 0)
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error_clnt("%s", lostchild);
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else if (!WIFEXITED(status) || WEXITSTATUS(status) > 0)
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error_clnt("%s", deadchild);
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packet_flush(1);
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break;
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}
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return 0;
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}
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