Revision 23547c40518ac04a20acf2f688114f5d97b61f24 authored by Jonathan Tan on 28 September 2020, 22:26:38 UTC, committed by Junio C Hamano on 28 September 2020, 23:11:59 UTC
When a fetch with the --filter argument is made, the configured default filter is set even if one already exists. This change was made in 5e46139376 ("builtin/fetch: remove unique promisor remote limitation", 2019-06-25) - in particular, changing from: * If this is the FIRST partial-fetch request, we enable partial * on this repo and remember the given filter-spec as the default * for subsequent fetches to this remote. to: * If this is a partial-fetch request, we enable partial on * this repo if not already enabled and remember the given * filter-spec as the default for subsequent fetches to this * remote. (The given filter-spec is "remembered" even if there is already an existing one.) This is problematic whenever a lazy fetch is made, because lazy fetches are made using "git fetch --filter=blob:none", but this will also happen if the user invokes "git fetch --filter=<filter>" manually. Therefore, restore the behavior prior to 5e46139376, which writes a filter-spec only if the current fetch request is the first partial-fetch one (for that remote). Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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sha1.c
/*
* SHA-1 implementation.
*
* Copyright (C) 2005 Paul Mackerras <paulus@samba.org>
*
* This version assumes we are running on a big-endian machine.
* It calls an external sha1_core() to process blocks of 64 bytes.
*/
#include <stdio.h>
#include <string.h>
#include "sha1.h"
void ppc_sha1_core(uint32_t *hash, const unsigned char *p,
unsigned int nblocks);
int ppc_SHA1_Init(ppc_SHA_CTX *c)
{
c->hash[0] = 0x67452301;
c->hash[1] = 0xEFCDAB89;
c->hash[2] = 0x98BADCFE;
c->hash[3] = 0x10325476;
c->hash[4] = 0xC3D2E1F0;
c->len = 0;
c->cnt = 0;
return 0;
}
int ppc_SHA1_Update(ppc_SHA_CTX *c, const void *ptr, unsigned long n)
{
unsigned long nb;
const unsigned char *p = ptr;
c->len += (uint64_t) n << 3;
while (n != 0) {
if (c->cnt || n < 64) {
nb = 64 - c->cnt;
if (nb > n)
nb = n;
memcpy(&c->buf.b[c->cnt], p, nb);
if ((c->cnt += nb) == 64) {
ppc_sha1_core(c->hash, c->buf.b, 1);
c->cnt = 0;
}
} else {
nb = n >> 6;
ppc_sha1_core(c->hash, p, nb);
nb <<= 6;
}
n -= nb;
p += nb;
}
return 0;
}
int ppc_SHA1_Final(unsigned char *hash, ppc_SHA_CTX *c)
{
unsigned int cnt = c->cnt;
c->buf.b[cnt++] = 0x80;
if (cnt > 56) {
if (cnt < 64)
memset(&c->buf.b[cnt], 0, 64 - cnt);
ppc_sha1_core(c->hash, c->buf.b, 1);
cnt = 0;
}
if (cnt < 56)
memset(&c->buf.b[cnt], 0, 56 - cnt);
c->buf.l[7] = c->len;
ppc_sha1_core(c->hash, c->buf.b, 1);
memcpy(hash, c->hash, 20);
return 0;
}
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