Now that the run_command family supports all of the redirection
modes needed by builtin-bundle, we can use those functions rather
than the underlying POSIX primitives. This should help to make the
bundle command slightly more portable to other systems, like Windows.
Signed-off-by: Shawn O. Pearce <spearce@xxxxxxxxxxx>
---
Yes, this replaces my earlier version of the same patch. I failed
to test it before sending it out; the earlier version returned a
bad status code in create_bundle.
builtin-bundle.c | 129 +++++++++++++-----------------------------------------
1 files changed, 30 insertions(+), 99 deletions(-)
diff --git a/builtin-bundle.c b/builtin-bundle.c
index 7868080..0a9b738 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.
@@ -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;
@@ -263,9 +202,10 @@ 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, ref_count = 0;
+ 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_EXCL | O_WRONLY, 0666));
@@ -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);
@@ -352,26 +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,
@@ -379,22 +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);
}
--
1.5.0.3.985.gcf0b4
-
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