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index-pack: add --max-input-size=<size> option 

When receiving a pack-file, it can be useful to abort the
`git index-pack`, if the pack-file is too big.

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 20:41:55 +02:00 committed by Junio C Hamano
parent 2632c897f7
commit 411481be6f
2 changed files with 7 additions and 0 deletions
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2
Documentation/git-index-pack.txt
View File

@ -87,6 +87,8 @@ OPTIONS
Specifying 0 will cause Git to auto-detect the number of CPU's
and use maximum 3 threads.
--max-input-size=<size>::
Die, if the pack is larger than <size>.
Note
----

5
builtin/index-pack.c
View File

@ -87,6 +87,7 @@ static struct progress *progress;
static unsigned char input_buffer[4096];
static unsigned int input_offset, input_len;
static off_t consumed_bytes;
static off_t max_input_size;
static unsigned deepest_delta;
static git_SHA_CTX input_ctx;
static uint32_t input_crc32;
@ -297,6 +298,8 @@ static void use(int bytes)
if (signed_add_overflows(consumed_bytes, bytes))
die(_("pack too large for current definition of off_t"));
consumed_bytes += bytes;
if (max_input_size && consumed_bytes > max_input_size)
die(_("pack exceeds maximum allowed size"));
}
static const char *open_pack_file(const char *pack_name)
@ -1714,6 +1717,8 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
opts.off32_limit = strtoul(c+1, &c, 0);
if (*c || opts.off32_limit & 0x80000000)
die(_("bad %s"), arg);
} else if (skip_prefix(arg, "--max-input-size=", &arg)) {
max_input_size = strtoumax(arg, NULL, 10);
} else
usage(index_pack_usage);
continue;