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receive-pack: allow a maximum input size to be specified

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Receive-pack feeds its input to either index-pack or
unpack-objects, which will happily accept as many bytes as
a sender is willing to provide. Let's allow an arbitrary
cutoff point where we will stop writing bytes to disk.

Cleaning up what has already been written to disk is a
related problem that is not addressed by this patch.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2016-08-24 20:41:57 +02:00
committed by Junio C Hamano
parent 5ad2186733
commit c08db5a2d0
4 changed files with 76 additions and 0 deletions
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12
builtin/receive-pack.c
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@ -46,6 +46,7 @@ static int transfer_unpack_limit = -1;
static int advertise_atomic_push = 1;
static int advertise_push_options;
static int unpack_limit = 100;
static off_t max_input_size;
static int report_status;
static int use_sideband;
static int use_atomic;
@ -212,6 +213,11 @@ static int receive_pack_config(const char *var, const char *value, void *cb)
return 0;
}
if (strcmp(var, "receive.maxinputsize") == 0) {
max_input_size = git_config_int64(var, value);
return 0;
}
return git_default_config(var, value, cb);
}
@ -1648,6 +1654,9 @@ static const char *unpack(int err_fd, struct shallow_info *si)
if (fsck_objects)
argv_array_pushf(&child.args, "--strict%s",
fsck_msg_types.buf);
if (max_input_size)
argv_array_pushf(&child.args, "--max-input-size=%"PRIuMAX,
(uintmax_t)max_input_size);
child.no_stdout = 1;
child.err = err_fd;
child.git_cmd = 1;
@ -1676,6 +1685,9 @@ static const char *unpack(int err_fd, struct shallow_info *si)
fsck_msg_types.buf);
if (!reject_thin)
argv_array_push(&child.args, "--fix-thin");
if (max_input_size)
argv_array_pushf(&child.args, "--max-input-size=%"PRIuMAX,
(uintmax_t)max_input_size);
child.out = -1;
child.err = err_fd;
child.git_cmd = 1;