Since functions in fetch-clone.c were only used from fetch-pack.c,
its content has been merged with fetch-pack.c. This allows for better
coupling of features with much simpler implementations.
One new thing is that the (abscence of) --thin also enforce it on
index-pack now, such that index-pack will abort if a thin pack was
_not_ asked for.
The -k or --keep, when provided twice, now causes the fetched pack
to be left as a kept pack just like receive-pack currently does.
Eventually this will be used to close a race against concurrent
repacking.
Signed-off-by: Nicolas Pitre <nico@xxxxxxx>
---
Documentation/git-fetch-pack.txt | 3 +-
Makefile | 2 +-
cache.h | 4 --
fetch-clone.c | 87 ------------------------------
fetch-pack.c | 110 +++++++++++++++++++++++++++++++++++---
5 files changed, 106 insertions(+), 100 deletions(-)
diff --git a/Documentation/git-fetch-pack.txt b/Documentation/git-fetch-pack.txt
index bff9aa6..3e6cd88 100644
--- a/Documentation/git-fetch-pack.txt
+++ b/Documentation/git-fetch-pack.txt
@@ -32,7 +32,8 @@ OPTIONS
-k::
Do not invoke 'git-unpack-objects' on received data, but
create a single packfile out of it instead, and store it
- in the object database.
+ in the object database. If provided twice then the pack is
+ locked against repacking.
--exec=<git-upload-pack>::
Use this to specify the path to 'git-upload-pack' on the
diff --git a/Makefile b/Makefile
index 28a5d91..80d4a4e 100644
--- a/Makefile
+++ b/Makefile
@@ -260,7 +260,7 @@ LIB_OBJS = \
quote.o read-cache.o refs.o run-command.o dir.o object-refs.o \
server-info.o setup.o sha1_file.o sha1_name.o strbuf.o \
tag.o tree.o usage.o config.o environment.o ctype.o copy.o \
- fetch-clone.o revision.o pager.o tree-walk.o xdiff-interface.o \
+ revision.o pager.o tree-walk.o xdiff-interface.o \
write_or_die.o trace.o list-objects.o grep.o \
alloc.o merge-file.o path-list.o help.o unpack-trees.o $(DIFF_OBJS) \
color.o wt-status.o archive-zip.o archive-tar.o
diff --git a/cache.h b/cache.h
index 6cb7e1d..f2ec5c8 100644
--- a/cache.h
+++ b/cache.h
@@ -416,10 +416,6 @@ extern int copy_fd(int ifd, int ofd);
extern void write_or_die(int fd, const void *buf, size_t count);
extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
-/* Finish off pack transfer receiving end */
-extern int receive_unpack_pack(int fd[2], const char *me, int quiet, int);
-extern int receive_keep_pack(int fd[2], const char *me, int quiet, int);
-
/* pager.c */
extern void setup_pager(void);
extern int pager_in_use;
diff --git a/fetch-clone.c b/fetch-clone.c
deleted file mode 100644
index f629d8d..0000000
--- a/fetch-clone.c
+++ /dev/null
@@ -1,87 +0,0 @@
-#include "cache.h"
-#include "exec_cmd.h"
-#include "pkt-line.h"
-#include "sideband.h"
-#include <sys/wait.h>
-
-static pid_t setup_sideband(int sideband, const char *me, int fd[2], int xd[2])
-{
- pid_t side_pid;
-
- if (!sideband) {
- fd[0] = xd[0];
- fd[1] = xd[1];
- return 0;
- }
- /* xd[] is talking with upload-pack; subprocess reads from
- * xd[0], spits out band#2 to stderr, and feeds us band#1
- * through our fd[0].
- */
- if (pipe(fd) < 0)
- die("%s: unable to set up pipe", me);
- side_pid = fork();
- if (side_pid < 0)
- die("%s: unable to fork off sideband demultiplexer", me);
- if (!side_pid) {
- /* subprocess */
- close(fd[0]);
- if (xd[0] != xd[1])
- close(xd[1]);
- if (recv_sideband(me, xd[0], fd[1], 2))
- exit(1);
- exit(0);
- }
- close(xd[0]);
- close(fd[1]);
- fd[1] = xd[1];
- return side_pid;
-}
-
-static int get_pack(int xd[2], const char *me, int sideband, const char **argv)
-{
- int status;
- pid_t pid, side_pid;
- int fd[2];
-
- side_pid = setup_sideband(sideband, me, fd, xd);
- pid = fork();
- if (pid < 0)
- die("%s: unable to fork off %s", me, argv[0]);
- if (!pid) {
- dup2(fd[0], 0);
- close(fd[0]);
- close(fd[1]);
- execv_git_cmd(argv);
- die("%s exec failed", argv[0]);
- }
- close(fd[0]);
- close(fd[1]);
- while (waitpid(pid, &status, 0) < 0) {
- if (errno != EINTR)
- die("waiting for %s: %s", argv[0], strerror(errno));
- }
- if (WIFEXITED(status)) {
- int code = WEXITSTATUS(status);
- if (code)
- die("%s died with error code %d", argv[0], code);
- return 0;
- }
- if (WIFSIGNALED(status)) {
- int sig = WTERMSIG(status);
- die("%s died of signal %d", argv[0], sig);
- }
- die("%s died of unnatural causes %d", argv[0], status);
-}
-
-int receive_unpack_pack(int xd[2], const char *me, int quiet, int sideband)
-{
- const char *argv[3] = { "unpack-objects", quiet ? "-q" : NULL, NULL };
- return get_pack(xd, me, sideband, argv);
-}
-
-int receive_keep_pack(int xd[2], const char *me, int quiet, int sideband)
-{
- const char *argv[5] = { "index-pack", "--stdin", "--fix-thin",
- quiet ? NULL : "-v", NULL };
- return get_pack(xd, me, sideband, argv);
-}
diff --git a/fetch-pack.c b/fetch-pack.c
index 36ea092..0a169dc 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -3,6 +3,9 @@
#include "pkt-line.h"
#include "commit.h"
#include "tag.h"
+#include "exec_cmd.h"
+#include "sideband.h"
+#include <sys/wait.h>
static int keep_pack;
static int quiet;
@@ -416,6 +419,103 @@ static int everything_local(struct ref *
return retval;
}
+static pid_t setup_sideband(int fd[2], int xd[2])
+{
+ pid_t side_pid;
+
+ if (!use_sideband) {
+ fd[0] = xd[0];
+ fd[1] = xd[1];
+ return 0;
+ }
+ /* xd[] is talking with upload-pack; subprocess reads from
+ * xd[0], spits out band#2 to stderr, and feeds us band#1
+ * through our fd[0].
+ */
+ if (pipe(fd) < 0)
+ die("fetch-pack: unable to set up pipe");
+ side_pid = fork();
+ if (side_pid < 0)
+ die("fetch-pack: unable to fork off sideband demultiplexer");
+ if (!side_pid) {
+ /* subprocess */
+ close(fd[0]);
+ if (xd[0] != xd[1])
+ close(xd[1]);
+ if (recv_sideband("fetch-pack", xd[0], fd[1], 2))
+ exit(1);
+ exit(0);
+ }
+ close(xd[0]);
+ close(fd[1]);
+ fd[1] = xd[1];
+ return side_pid;
+}
+
+static int get_pack(int xd[2], const char **argv)
+{
+ int status;
+ pid_t pid, side_pid;
+ int fd[2];
+
+ side_pid = setup_sideband(fd, xd);
+ pid = fork();
+ if (pid < 0)
+ die("fetch-pack: unable to fork off %s", argv[0]);
+ if (!pid) {
+ dup2(fd[0], 0);
+ close(fd[0]);
+ close(fd[1]);
+ execv_git_cmd(argv);
+ die("%s exec failed", argv[0]);
+ }
+ close(fd[0]);
+ close(fd[1]);
+ while (waitpid(pid, &status, 0) < 0) {
+ if (errno != EINTR)
+ die("waiting for %s: %s", argv[0], strerror(errno));
+ }
+ if (WIFEXITED(status)) {
+ int code = WEXITSTATUS(status);
+ if (code)
+ die("%s died with error code %d", argv[0], code);
+ return 0;
+ }
+ if (WIFSIGNALED(status)) {
+ int sig = WTERMSIG(status);
+ die("%s died of signal %d", argv[0], sig);
+ }
+ die("%s died of unnatural causes %d", argv[0], status);
+}
+
+static int explode_rx_pack(int xd[2])
+{
+ const char *argv[3] = { "unpack-objects", quiet ? "-q" : NULL, NULL };
+ return get_pack(xd, argv);
+}
+
+static int keep_rx_pack(int xd[2])
+{
+ const char *argv[6];
+ char keep_arg[256];
+ int n = 0;
+
+ argv[n++] = "index-pack";
+ argv[n++] = "--stdin";
+ if (!quiet)
+ argv[n++] = "-v";
+ if (use_thin_pack)
+ argv[n++] = "--fix-thin";
+ if (keep_pack > 1) {
+ int s = sprintf(keep_arg, "--keep=fetch-pack %i on ", getpid());
+ if (gethostname(keep_arg + s, sizeof(keep_arg) - s))
+ strcpy(keep_arg + s, "localhost");
+ argv[n++] = keep_arg;
+ }
+ argv[n] = NULL;
+ return get_pack(xd, argv);
+}
+
static int fetch_pack(int fd[2], int nr_match, char **match)
{
struct ref *ref;
@@ -447,17 +547,13 @@ static int fetch_pack(int fd[2], int nr_
goto all_done;
}
if (find_common(fd, sha1, ref) < 0)
- if (!keep_pack)
+ if (keep_pack != 1)
/* When cloning, it is not unusual to have
* no common commit.
*/
fprintf(stderr, "warning: no common commits\n");
- if (keep_pack)
- status = receive_keep_pack(fd, "git-fetch-pack", quiet, use_sideband);
- else
- status = receive_unpack_pack(fd, "git-fetch-pack", quiet, use_sideband);
-
+ status = (keep_pack) ? keep_rx_pack(fd) : explode_rx_pack(fd);
if (status)
die("git-fetch-pack: fetch failed.");
@@ -494,7 +590,7 @@ int main(int argc, char **argv)
continue;
}
if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
- keep_pack = 1;
+ keep_pack++;
continue;
}
if (!strcmp("--thin", arg)) {
--
1.4.3.3.g87b2-dirty
-
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