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[PATCH v5 7/9] builtin/receive-pack: explicitly pass packfile fd

From
Justin Tobler <jltobler@gmail.com>
Date
Aug 20, 2026, 23:49 UTC
Message-ID
<20260820234940.894624-8-jltobler@gmail.com>
In-Reply-To
<20260820234940.894624-1-jltobler@gmail.com>

When processing the incoming packfile in git-receive-pack(1), `unpack()` assumes it should always read it from stdin. In preparation for `unpack()` logic being moved behind a generic ODB transaction interface, update the function signature to take the an explicit fd provided by callers to read the incoming packfile from instead. Call sites are updated accordingly.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
---
 builtin/receive-pack.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 6df872697b..b369466783 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -2292,9 +2292,9 @@ static void read_push_options(struct packet_reader *reader,
 	}
 }
 
-static const char *parse_pack_header(struct pack_header *hdr)
+static const char *parse_pack_header(struct pack_header *hdr, int pack_fd)
 {
-	switch (read_pack_header(0, hdr)) {
+	switch (read_pack_header(pack_fd, hdr)) {
 	case PH_ERROR_EOF:
 		return "eof before pack header was fully read";
 
@@ -2340,8 +2340,8 @@ struct unpack_opts {
 	int quiet;
 };
 
-static int unpack(struct odb_transaction *transaction, struct strbuf *err_msg,
-		  const struct unpack_opts *opts)
+static int unpack(struct odb_transaction *transaction, int pack_fd,
+		  struct strbuf *err_msg, const struct unpack_opts *opts)
 {
 	struct pack_header hdr;
 	const char *hdr_err;
@@ -2349,7 +2349,7 @@ static int unpack(struct odb_transaction *transaction, struct strbuf *err_msg,
 	struct child_process child = CHILD_PROCESS_INIT;
 	int err_fd = opts->err_fd;
 
-	hdr_err = parse_pack_header(&hdr);
+	hdr_err = parse_pack_header(&hdr, pack_fd);
 	if (hdr_err) {
 		if (err_fd > 0)
 			close(err_fd);
@@ -2376,6 +2376,7 @@ static int unpack(struct odb_transaction *transaction, struct strbuf *err_msg,
 			strvec_pushf(&child.args, "--max-input-size=%"PRIuMAX,
 				     (uintmax_t)opts->max_input_size);
 		child.no_stdout = 1;
+		child.in = pack_fd;
 		child.err = err_fd;
 		child.git_cmd = 1;
 		status = run_command(&child);
@@ -2410,6 +2411,7 @@ static int unpack(struct odb_transaction *transaction, struct strbuf *err_msg,
 			strvec_pushf(&child.args, "--max-input-size=%"PRIuMAX,
 				     (uintmax_t)opts->max_input_size);
 		child.out = -1;
+		child.in = pack_fd;
 		child.err = err_fd;
 		child.git_cmd = 1;
 		status = start_command(&child);
@@ -2461,7 +2463,7 @@ static int unpack_with_sideband(struct odb_transaction *transaction,
 	int ret;
 
 	if (!use_sideband)
-		return unpack(transaction, err_msg, &opts);
+		return unpack(transaction, 0, err_msg, &opts);
 
 	use_keepalive = KEEPALIVE_AFTER_NUL;
 	memset(&muxer, 0, sizeof(muxer));
@@ -2471,7 +2473,7 @@ static int unpack_with_sideband(struct odb_transaction *transaction,
 		return 0;
 
 	opts.err_fd = muxer.in;
-	ret = unpack(transaction, err_msg, &opts);
+	ret = unpack(transaction, 0, err_msg, &opts);
 
 	finish_async(&muxer);
 	return ret;
-- 
2.55.0.424.g13c7afec21
Previous: Junio C HamanoNext: Patrick Steinhardt
Message 79 of 80 in “builtin/receive-pack: support pluggable packfile writes”
  1. 0/6 builtin/receive-pack: support pluggable packfile writesJustin Tobler, Aug 6, 2026
  2. 1/6 odb/transaction: add transaction release interfaceJustin Tobler, Aug 6, 2026
  3. Patrick SteinhardtAug 7, 2026
  4. Justin ToblerAug 7, 2026
  5. 2/6 builtin/receive-pack: pass shallow file explicitlyJustin Tobler, Aug 6, 2026
  6. Patrick SteinhardtAug 7, 2026
  7. 4/6 builtin/receive-pack: report unpack errors via strbufJustin Tobler, Aug 6, 2026
  8. Patrick SteinhardtAug 7, 2026
  9. Justin ToblerAug 7, 2026
  10. Justin ToblerAug 9, 2026
  11. Patrick SteinhardtAug 10, 2026
  12. 3/6 builtin/receive-pack: lift global state out of unpack()Justin Tobler, Aug 6, 2026
  13. Patrick SteinhardtAug 7, 2026
  14. Justin ToblerAug 7, 2026
  15. 5/6 builtin/receive-pack: explicitly pass packfile fdJustin Tobler, Aug 6, 2026
  16. 6/6 odb/transaction: add transaction interface to write packfilesJustin Tobler, Aug 6, 2026
  17. Patrick SteinhardtAug 7, 2026
  18. Justin ToblerAug 7, 2026
  19. 0/7 builtin/receive-pack: support pluggable packfile writesJustin Tobler, Aug 9, 2026
  20. 1/7 odb/transaction: add transaction finalize interfaceJustin Tobler, Aug 9, 2026
  21. Junio C HamanoAug 10, 2026
  22. Justin ToblerAug 10, 2026
  23. 2/7 builtin/receive-pack: pass shallow file explicitlyJustin Tobler, Aug 9, 2026
  24. 3/7 builtin/receive-pack: read unpack limit config lazilyJustin Tobler, Aug 9, 2026
  25. Patrick SteinhardtAug 10, 2026
  26. Justin ToblerAug 10, 2026
  27. Junio C HamanoAug 10, 2026
  28. Justin ToblerAug 10, 2026
  29. 4/7 builtin/receive-pack: lift global state out of unpack()Justin Tobler, Aug 9, 2026
  30. 5/7 builtin/receive-pack: report unpack errors via strbufJustin Tobler, Aug 9, 2026
  31. 6/7 builtin/receive-pack: explicitly pass packfile fdJustin Tobler, Aug 9, 2026
  32. 7/7 odb/transaction: add transaction interface to write packfilesJustin Tobler, Aug 9, 2026
  33. Junio C HamanoAug 10, 2026
  34. Justin ToblerAug 10, 2026
  35. Junio C HamanoAug 10, 2026
  36. Justin ToblerAug 10, 2026
  37. 0/9 builtin/receive-pack: support pluggable packfile writesJustin Tobler, Aug 11, 2026
  38. 1/9 builtin/receive-pack: properly clean up keep filesJustin Tobler, Aug 11, 2026
  39. Patrick SteinhardtAug 12, 2026
  40. Justin ToblerAug 13, 2026
  41. Patrick SteinhardtAug 14, 2026
  42. 2/9 odb/transaction: add transaction finalize interfaceJustin Tobler, Aug 11, 2026
  43. Patrick SteinhardtAug 12, 2026
  44. 3/9 builtin/receive-pack: pass shallow file explicitlyJustin Tobler, Aug 11, 2026
  45. 4/9 builtin/receive-pack: read unpack limit config lazilyJustin Tobler, Aug 11, 2026
  46. 5/9 builtin/receive-pack: lift global state out of unpack()Justin Tobler, Aug 11, 2026
  47. 6/9 builtin/receive-pack: report unpack errors via strbufJustin Tobler, Aug 11, 2026
  48. 8/9 odb: return temporary ODB source when setJustin Tobler, Aug 11, 2026
  49. Patrick SteinhardtAug 12, 2026
  50. 7/9 builtin/receive-pack: explicitly pass packfile fdJustin Tobler, Aug 11, 2026
  51. 9/9 odb/transaction: add transaction interface to write packfilesJustin Tobler, Aug 11, 2026
  52. Patrick SteinhardtAug 14, 2026
  53. Justin ToblerAug 14, 2026
  54. Patrick SteinhardtAug 17, 2026
  55. 0/9 builtin/receive-pack: support pluggable packfile writesJustin Tobler, Aug 19, 2026
  56. 1/9 builtin/receive-pack: properly clean up keep filesJustin Tobler, Aug 19, 2026
  57. Patrick SteinhardtAug 20, 2026
  58. Justin ToblerAug 20, 2026
  59. 2/9 odb/transaction: add transaction finalize interfaceJustin Tobler, Aug 19, 2026
  60. Patrick SteinhardtAug 20, 2026
  61. 3/9 builtin/receive-pack: pass shallow file explicitlyJustin Tobler, Aug 19, 2026
  62. 4/9 builtin/receive-pack: read unpack limit config lazilyJustin Tobler, Aug 19, 2026
  63. 5/9 builtin/receive-pack: lift global state out of unpack()Justin Tobler, Aug 19, 2026
  64. 6/9 builtin/receive-pack: report unpack errors via strbufJustin Tobler, Aug 19, 2026
  65. 7/9 builtin/receive-pack: explicitly pass packfile fdJustin Tobler, Aug 19, 2026
  66. 8/9 odb: return temporary ODB source when setJustin Tobler, Aug 19, 2026
  67. 9/9 odb/transaction: add transaction interface to write packfilesJustin Tobler, Aug 19, 2026
  68. Patrick SteinhardtAug 20, 2026
  69. 0/9 builtin/receive-pack: support pluggable packfile writesJustin Tobler, Aug 20, 2026
  70. 1/9 builtin/receive-pack: properly clean up keep filesJustin Tobler, Aug 20, 2026
  71. 2/9 odb/transaction: add transaction finalize interfaceJustin Tobler, Aug 20, 2026
  72. 3/9 builtin/receive-pack: pass shallow file explicitlyJustin Tobler, Aug 20, 2026
  73. 4/9 builtin/receive-pack: read unpack limit config lazilyJustin Tobler, Aug 20, 2026
  74. 5/9 builtin/receive-pack: lift global state out of unpack()Justin Tobler, Aug 20, 2026
  75. 6/9 builtin/receive-pack: report unpack errors via strbufJustin Tobler, Aug 20, 2026
  76. 8/9 odb: return temporary ODB source when setJustin Tobler, Aug 20, 2026
  77. 9/9 odb/transaction: add transaction interface to write packfilesJustin Tobler, Aug 20, 2026
  78. Junio C HamanoAug 21, 2026
  79. 7/9 builtin/receive-pack: explicitly pass packfile fdJustin Tobler, Aug 20, 2026
  80. Patrick SteinhardtAug 21, 2026

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