1 e6bcace5 2021-06-22 stsp /*
   2 e6bcace5 2021-06-22 stsp  * Copyright (c) 2020 Ori Bernstein
   3 e6bcace5 2021-06-22 stsp  * Copyright (c) 2021 Stefan Sperling <stsp@openbsd.org>
   4 e6bcace5 2021-06-22 stsp  *
   5 e6bcace5 2021-06-22 stsp  * Permission to use, copy, modify, and distribute this software for any
   6 e6bcace5 2021-06-22 stsp  * purpose with or without fee is hereby granted, provided that the above
   7 e6bcace5 2021-06-22 stsp  * copyright notice and this permission notice appear in all copies.
   8 e6bcace5 2021-06-22 stsp  *
   9 e6bcace5 2021-06-22 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10 e6bcace5 2021-06-22 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11 e6bcace5 2021-06-22 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12 e6bcace5 2021-06-22 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13 e6bcace5 2021-06-22 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14 e6bcace5 2021-06-22 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15 e6bcace5 2021-06-22 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16 e6bcace5 2021-06-22 stsp  */
  17 e6bcace5 2021-06-22 stsp 
  18 08736cf9 2021-06-23 stsp #include <sys/types.h>
  19 e6bcace5 2021-06-22 stsp #include <sys/queue.h>
  20 f8b19efd 2021-10-13 stsp #include <sys/tree.h>
  21 08736cf9 2021-06-23 stsp #include <sys/uio.h>
  22 e6bcace5 2021-06-22 stsp #include <sys/stat.h>
  23 211cfef0 2022-01-05 stsp #include <sys/time.h>
  24 e6bcace5 2021-06-22 stsp 
  25 e3f86256 2022-02-18 naddy #include <endian.h>
  26 08736cf9 2021-06-23 stsp #include <stdint.h>
  27 05118f5a 2021-06-22 stsp #include <imsg.h>
  28 e6bcace5 2021-06-22 stsp #include <stdio.h>
  29 e6bcace5 2021-06-22 stsp #include <stdlib.h>
  30 e6bcace5 2021-06-22 stsp #include <string.h>
  31 e6bcace5 2021-06-22 stsp #include <sha1.h>
  32 211cfef0 2022-01-05 stsp #include <time.h>
  33 bfc73a47 2022-03-19 naddy #include <unistd.h>
  34 e6bcace5 2021-06-22 stsp #include <limits.h>
  35 e6bcace5 2021-06-22 stsp #include <zlib.h>
  36 e6bcace5 2021-06-22 stsp 
  37 e6bcace5 2021-06-22 stsp #include "got_error.h"
  38 e6bcace5 2021-06-22 stsp #include "got_cancel.h"
  39 e6bcace5 2021-06-22 stsp #include "got_object.h"
  40 f8b19efd 2021-10-13 stsp #include "got_path.h"
  41 05118f5a 2021-06-22 stsp #include "got_reference.h"
  42 05118f5a 2021-06-22 stsp #include "got_repository_admin.h"
  43 08347b73 2021-10-14 stsp #include "got_opentemp.h"
  44 e6bcace5 2021-06-22 stsp 
  45 e6bcace5 2021-06-22 stsp #include "got_lib_deltify.h"
  46 e6bcace5 2021-06-22 stsp #include "got_lib_delta.h"
  47 e6bcace5 2021-06-22 stsp #include "got_lib_object.h"
  48 e6bcace5 2021-06-22 stsp #include "got_lib_object_idset.h"
  49 05118f5a 2021-06-22 stsp #include "got_lib_object_cache.h"
  50 e6bcace5 2021-06-22 stsp #include "got_lib_deflate.h"
  51 e6bcace5 2021-06-22 stsp #include "got_lib_pack.h"
  52 05118f5a 2021-06-22 stsp #include "got_lib_privsep.h"
  53 05118f5a 2021-06-22 stsp #include "got_lib_repository.h"
  54 211cfef0 2022-01-05 stsp #include "got_lib_ratelimit.h"
  55 e6bcace5 2021-06-22 stsp 
  56 74881701 2021-10-15 stsp #ifndef MIN
  57 74881701 2021-10-15 stsp #define	MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
  58 74881701 2021-10-15 stsp #endif
  59 74881701 2021-10-15 stsp 
  60 e6bcace5 2021-06-22 stsp #ifndef MAX
  61 e6bcace5 2021-06-22 stsp #define	MAX(_a,_b) ((_a) > (_b) ? (_a) : (_b))
  62 e6bcace5 2021-06-22 stsp #endif
  63 e6bcace5 2021-06-22 stsp 
  64 70f8f24d 2022-04-14 stsp #ifndef nitems
  65 70f8f24d 2022-04-14 stsp #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
  66 70f8f24d 2022-04-14 stsp #endif
  67 70f8f24d 2022-04-14 stsp 
  68 e6bcace5 2021-06-22 stsp struct got_pack_meta {
  69 e6bcace5 2021-06-22 stsp 	struct got_object_id id;
  70 e6bcace5 2021-06-22 stsp 	char	*path;
  71 e6bcace5 2021-06-22 stsp 	int	obj_type;
  72 600b755e 2021-10-14 stsp 	off_t	size;
  73 e6bcace5 2021-06-22 stsp 	time_t	mtime;
  74 e6bcace5 2021-06-22 stsp 
  75 e6bcace5 2021-06-22 stsp 	/* The best delta we picked */
  76 e6bcace5 2021-06-22 stsp 	struct got_pack_meta *head;
  77 e6bcace5 2021-06-22 stsp 	struct got_pack_meta *prev;
  78 5060d5a1 2022-01-10 stsp 	unsigned char *delta_buf; /* if not encoded in delta cache file */
  79 74881701 2021-10-15 stsp 	off_t	delta_offset;	/* offset in delta cache file */
  80 5060d5a1 2022-01-10 stsp 	off_t	delta_len;	/* encoded delta length */
  81 e6bcace5 2021-06-22 stsp 	int	nchain;
  82 e6bcace5 2021-06-22 stsp 
  83 67fd6849 2022-02-13 stsp 	int	have_reused_delta;
  84 67fd6849 2022-02-13 stsp 	off_t   reused_delta_offset; /* offset of delta in reused pack file */
  85 67fd6849 2022-02-13 stsp 	struct got_object_id *base_obj_id;
  86 67fd6849 2022-02-13 stsp 
  87 e6bcace5 2021-06-22 stsp 	/* Only used for delta window */
  88 e6bcace5 2021-06-22 stsp 	struct got_delta_table *dtab;
  89 e6bcace5 2021-06-22 stsp 
  90 e6bcace5 2021-06-22 stsp 	/* Only used for writing offset deltas */
  91 e6bcace5 2021-06-22 stsp 	off_t	off;
  92 e6bcace5 2021-06-22 stsp };
  93 e6bcace5 2021-06-22 stsp 
  94 e6bcace5 2021-06-22 stsp struct got_pack_metavec {
  95 e6bcace5 2021-06-22 stsp 	struct got_pack_meta **meta;
  96 e6bcace5 2021-06-22 stsp 	int nmeta;
  97 e6bcace5 2021-06-22 stsp 	int metasz;
  98 e6bcace5 2021-06-22 stsp };
  99 e6bcace5 2021-06-22 stsp 
 100 e6bcace5 2021-06-22 stsp static const struct got_error *
 101 e6bcace5 2021-06-22 stsp alloc_meta(struct got_pack_meta **new, struct got_object_id *id,
 102 e6bcace5 2021-06-22 stsp     const char *path, int obj_type, time_t mtime)
 103 e6bcace5 2021-06-22 stsp {
 104 e6bcace5 2021-06-22 stsp 	const struct got_error *err = NULL;
 105 e6bcace5 2021-06-22 stsp 	struct got_pack_meta *m;
 106 e6bcace5 2021-06-22 stsp 
 107 e6bcace5 2021-06-22 stsp 	*new = NULL;
 108 e6bcace5 2021-06-22 stsp 
 109 e6bcace5 2021-06-22 stsp 	m = calloc(1, sizeof(*m));
 110 e6bcace5 2021-06-22 stsp 	if (m == NULL)
 111 1d19226a 2021-10-13 stsp 		return got_error_from_errno("calloc");
 112 e6bcace5 2021-06-22 stsp 
 113 e6bcace5 2021-06-22 stsp 	memcpy(&m->id, id, sizeof(m->id));
 114 e6bcace5 2021-06-22 stsp 
 115 e6bcace5 2021-06-22 stsp 	m->path = strdup(path);
 116 e6bcace5 2021-06-22 stsp 	if (m->path == NULL) {
 117 e6bcace5 2021-06-22 stsp 		err = got_error_from_errno("strdup");
 118 e6bcace5 2021-06-22 stsp 		free(m);
 119 e6bcace5 2021-06-22 stsp 		return err;
 120 e6bcace5 2021-06-22 stsp 	}
 121 e6bcace5 2021-06-22 stsp 
 122 e6bcace5 2021-06-22 stsp 	m->obj_type = obj_type;
 123 e6bcace5 2021-06-22 stsp 	m->mtime = mtime;
 124 e6bcace5 2021-06-22 stsp 	*new = m;
 125 e6bcace5 2021-06-22 stsp 	return NULL;
 126 e6bcace5 2021-06-22 stsp }
 127 e6bcace5 2021-06-22 stsp 
 128 e6bcace5 2021-06-22 stsp static void
 129 e6bcace5 2021-06-22 stsp clear_meta(struct got_pack_meta *meta)
 130 e6bcace5 2021-06-22 stsp {
 131 e6bcace5 2021-06-22 stsp 	if (meta == NULL)
 132 e6bcace5 2021-06-22 stsp 		return;
 133 e6bcace5 2021-06-22 stsp 	free(meta->path);
 134 e6bcace5 2021-06-22 stsp 	meta->path = NULL;
 135 5060d5a1 2022-01-10 stsp 	free(meta->delta_buf);
 136 5060d5a1 2022-01-10 stsp 	meta->delta_buf = NULL;
 137 67fd6849 2022-02-13 stsp 	free(meta->base_obj_id);
 138 67fd6849 2022-02-13 stsp 	meta->base_obj_id = NULL;
 139 e6bcace5 2021-06-22 stsp }
 140 e6bcace5 2021-06-22 stsp 
 141 e6bcace5 2021-06-22 stsp static void
 142 e6bcace5 2021-06-22 stsp free_nmeta(struct got_pack_meta **meta, int nmeta)
 143 e6bcace5 2021-06-22 stsp {
 144 e6bcace5 2021-06-22 stsp 	int i;
 145 e6bcace5 2021-06-22 stsp 
 146 e6bcace5 2021-06-22 stsp 	for (i = 0; i < nmeta; i++)
 147 e6bcace5 2021-06-22 stsp 		clear_meta(meta[i]);
 148 e6bcace5 2021-06-22 stsp 	free(meta);
 149 e6bcace5 2021-06-22 stsp }
 150 e6bcace5 2021-06-22 stsp 
 151 e6bcace5 2021-06-22 stsp static int
 152 e6bcace5 2021-06-22 stsp delta_order_cmp(const void *pa, const void *pb)
 153 e6bcace5 2021-06-22 stsp {
 154 e6bcace5 2021-06-22 stsp 	struct got_pack_meta *a, *b;
 155 e6bcace5 2021-06-22 stsp 	int cmp;
 156 e6bcace5 2021-06-22 stsp 
 157 e6bcace5 2021-06-22 stsp 	a = *(struct got_pack_meta **)pa;
 158 e6bcace5 2021-06-22 stsp 	b = *(struct got_pack_meta **)pb;
 159 e6bcace5 2021-06-22 stsp 
 160 e6bcace5 2021-06-22 stsp 	if (a->obj_type != b->obj_type)
 161 e6bcace5 2021-06-22 stsp 		return a->obj_type - b->obj_type;
 162 e6bcace5 2021-06-22 stsp 	cmp = strcmp(a->path, b->path);
 163 e6bcace5 2021-06-22 stsp 	if (cmp != 0)
 164 e6bcace5 2021-06-22 stsp 		return cmp;
 165 611e8e31 2022-05-01 stsp 	if (a->mtime < b->mtime)
 166 611e8e31 2022-05-01 stsp 		return -1;
 167 611e8e31 2022-05-01 stsp 	if (a->mtime > b->mtime)
 168 611e8e31 2022-05-01 stsp 		return 1;
 169 e6bcace5 2021-06-22 stsp 	return got_object_id_cmp(&a->id, &b->id);
 170 e6bcace5 2021-06-22 stsp }
 171 e6bcace5 2021-06-22 stsp 
 172 5060d5a1 2022-01-10 stsp static off_t
 173 e6bcace5 2021-06-22 stsp delta_size(struct got_delta_instruction *deltas, int ndeltas)
 174 e6bcace5 2021-06-22 stsp {
 175 5060d5a1 2022-01-10 stsp 	int i;
 176 5060d5a1 2022-01-10 stsp 	off_t size = 32;
 177 e6bcace5 2021-06-22 stsp 	for (i = 0; i < ndeltas; i++) {
 178 e6bcace5 2021-06-22 stsp 		if (deltas[i].copy)
 179 e6bcace5 2021-06-22 stsp 			size += GOT_DELTA_SIZE_SHIFT;
 180 e6bcace5 2021-06-22 stsp 		else
 181 e6bcace5 2021-06-22 stsp 			size += deltas[i].len + 1;
 182 e6bcace5 2021-06-22 stsp 	}
 183 e6bcace5 2021-06-22 stsp 	return size;
 184 5060d5a1 2022-01-10 stsp }
 185 5060d5a1 2022-01-10 stsp 
 186 5060d5a1 2022-01-10 stsp static const struct got_error *
 187 5060d5a1 2022-01-10 stsp append(unsigned char **p, size_t *len, off_t *sz, void *seg, int nseg)
 188 5060d5a1 2022-01-10 stsp {
 189 5060d5a1 2022-01-10 stsp 	char *n;
 190 5060d5a1 2022-01-10 stsp 
 191 5060d5a1 2022-01-10 stsp 	if (*len + nseg >= *sz) {
 192 5060d5a1 2022-01-10 stsp 		while (*len + nseg >= *sz)
 193 5060d5a1 2022-01-10 stsp 			*sz += *sz / 2;
 194 5060d5a1 2022-01-10 stsp 		n = realloc(*p, *sz);
 195 5060d5a1 2022-01-10 stsp 		if (n == NULL)
 196 5060d5a1 2022-01-10 stsp 			return got_error_from_errno("realloc");
 197 5060d5a1 2022-01-10 stsp 		*p = n;
 198 5060d5a1 2022-01-10 stsp 	}
 199 5060d5a1 2022-01-10 stsp 	memcpy(*p + *len, seg, nseg);
 200 5060d5a1 2022-01-10 stsp 	*len += nseg;
 201 5060d5a1 2022-01-10 stsp 	return NULL;
 202 5060d5a1 2022-01-10 stsp }
 203 5060d5a1 2022-01-10 stsp 
 204 5060d5a1 2022-01-10 stsp static const struct got_error *
 205 5060d5a1 2022-01-10 stsp encode_delta_in_mem(struct got_pack_meta *m, struct got_raw_object *o,
 206 5060d5a1 2022-01-10 stsp     struct got_delta_instruction *deltas, int ndeltas,
 207 5060d5a1 2022-01-10 stsp     off_t delta_size, off_t base_size)
 208 5060d5a1 2022-01-10 stsp {
 209 5060d5a1 2022-01-10 stsp 	const struct got_error *err;
 210 5060d5a1 2022-01-10 stsp 	unsigned char buf[16], *bp;
 211 5060d5a1 2022-01-10 stsp 	int i, j;
 212 5060d5a1 2022-01-10 stsp 	size_t len = 0;
 213 5060d5a1 2022-01-10 stsp 	off_t n;
 214 5060d5a1 2022-01-10 stsp 	struct got_delta_instruction *d;
 215 5060d5a1 2022-01-10 stsp 
 216 5060d5a1 2022-01-10 stsp 	m->delta_buf = malloc(delta_size);
 217 5060d5a1 2022-01-10 stsp 	if (m->delta_buf == NULL)
 218 5060d5a1 2022-01-10 stsp 		return got_error_from_errno("calloc");
 219 5060d5a1 2022-01-10 stsp 
 220 5060d5a1 2022-01-10 stsp 	/* base object size */
 221 5060d5a1 2022-01-10 stsp 	buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
 222 5060d5a1 2022-01-10 stsp 	n = base_size >> GOT_DELTA_SIZE_SHIFT;
 223 5060d5a1 2022-01-10 stsp 	for (i = 1; n > 0; i++) {
 224 5060d5a1 2022-01-10 stsp 		buf[i - 1] |= GOT_DELTA_SIZE_MORE;
 225 5060d5a1 2022-01-10 stsp 		buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
 226 5060d5a1 2022-01-10 stsp 		n >>= GOT_DELTA_SIZE_SHIFT;
 227 5060d5a1 2022-01-10 stsp 	}
 228 5060d5a1 2022-01-10 stsp 	err = append(&m->delta_buf, &len, &delta_size, buf, i);
 229 5060d5a1 2022-01-10 stsp 	if (err)
 230 5060d5a1 2022-01-10 stsp 		return err;
 231 5060d5a1 2022-01-10 stsp 
 232 5060d5a1 2022-01-10 stsp 	/* target object size */
 233 5060d5a1 2022-01-10 stsp 	buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
 234 5060d5a1 2022-01-10 stsp 	n = o->size >> GOT_DELTA_SIZE_SHIFT;
 235 5060d5a1 2022-01-10 stsp 	for (i = 1; n > 0; i++) {
 236 5060d5a1 2022-01-10 stsp 		buf[i - 1] |= GOT_DELTA_SIZE_MORE;
 237 5060d5a1 2022-01-10 stsp 		buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
 238 5060d5a1 2022-01-10 stsp 		n >>= GOT_DELTA_SIZE_SHIFT;
 239 5060d5a1 2022-01-10 stsp 	}
 240 5060d5a1 2022-01-10 stsp 	err = append(&m->delta_buf, &len, &delta_size, buf, i);
 241 5060d5a1 2022-01-10 stsp 	if (err)
 242 5060d5a1 2022-01-10 stsp 		return err;
 243 5060d5a1 2022-01-10 stsp 
 244 5060d5a1 2022-01-10 stsp 	for (j = 0; j < ndeltas; j++) {
 245 5060d5a1 2022-01-10 stsp 		d = &deltas[j];
 246 5060d5a1 2022-01-10 stsp 		if (d->copy) {
 247 5060d5a1 2022-01-10 stsp 			n = d->offset;
 248 5060d5a1 2022-01-10 stsp 			bp = &buf[1];
 249 5060d5a1 2022-01-10 stsp 			buf[0] = GOT_DELTA_BASE_COPY;
 250 5060d5a1 2022-01-10 stsp 			for (i = 0; i < 4; i++) {
 251 5060d5a1 2022-01-10 stsp 				/* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
 252 5060d5a1 2022-01-10 stsp 				buf[0] |= 1 << i;
 253 5060d5a1 2022-01-10 stsp 				*bp++ = n & 0xff;
 254 5060d5a1 2022-01-10 stsp 				n >>= 8;
 255 5060d5a1 2022-01-10 stsp 				if (n == 0)
 256 5060d5a1 2022-01-10 stsp 					break;
 257 5060d5a1 2022-01-10 stsp 			}
 258 5060d5a1 2022-01-10 stsp 
 259 5060d5a1 2022-01-10 stsp 			n = d->len;
 260 5060d5a1 2022-01-10 stsp 			if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
 261 5060d5a1 2022-01-10 stsp 				/* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
 262 5060d5a1 2022-01-10 stsp 				for (i = 0; i < 3 && n > 0; i++) {
 263 5060d5a1 2022-01-10 stsp 					buf[0] |= 1 << (i + 4);
 264 5060d5a1 2022-01-10 stsp 					*bp++ = n & 0xff;
 265 5060d5a1 2022-01-10 stsp 					n >>= 8;
 266 5060d5a1 2022-01-10 stsp 				}
 267 5060d5a1 2022-01-10 stsp 			}
 268 5060d5a1 2022-01-10 stsp 			err = append(&m->delta_buf, &len, &delta_size,
 269 5060d5a1 2022-01-10 stsp 			    buf, bp - buf);
 270 5060d5a1 2022-01-10 stsp 			if (err)
 271 5060d5a1 2022-01-10 stsp 				return err;
 272 5060d5a1 2022-01-10 stsp 		} else if (o->f == NULL) {
 273 5060d5a1 2022-01-10 stsp 			n = 0;
 274 5060d5a1 2022-01-10 stsp 			while (n != d->len) {
 275 5060d5a1 2022-01-10 stsp 				buf[0] = (d->len - n < 127) ? d->len - n : 127;
 276 5060d5a1 2022-01-10 stsp 				err = append(&m->delta_buf, &len, &delta_size,
 277 5060d5a1 2022-01-10 stsp 				    buf, 1);
 278 5060d5a1 2022-01-10 stsp 				if (err)
 279 5060d5a1 2022-01-10 stsp 					return err;
 280 5060d5a1 2022-01-10 stsp 				err = append(&m->delta_buf, &len, &delta_size,
 281 5060d5a1 2022-01-10 stsp 				    o->data + o->hdrlen + d->offset + n,
 282 5060d5a1 2022-01-10 stsp 				    buf[0]);
 283 5060d5a1 2022-01-10 stsp 				if (err)
 284 5060d5a1 2022-01-10 stsp 					return err;
 285 5060d5a1 2022-01-10 stsp 				n += buf[0];
 286 5060d5a1 2022-01-10 stsp 			}
 287 5060d5a1 2022-01-10 stsp 		} else {
 288 5060d5a1 2022-01-10 stsp 			char content[128];
 289 5060d5a1 2022-01-10 stsp 			size_t r;
 290 5060d5a1 2022-01-10 stsp 			if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1)
 291 5060d5a1 2022-01-10 stsp 				return got_error_from_errno("fseeko");
 292 5060d5a1 2022-01-10 stsp 			n = 0;
 293 5060d5a1 2022-01-10 stsp 			while (n != d->len) {
 294 5060d5a1 2022-01-10 stsp 				buf[0] = (d->len - n < 127) ? d->len - n : 127;
 295 5060d5a1 2022-01-10 stsp 				err = append(&m->delta_buf, &len, &delta_size,
 296 5060d5a1 2022-01-10 stsp 				    buf, 1);
 297 5060d5a1 2022-01-10 stsp 				if (err)
 298 5060d5a1 2022-01-10 stsp 					return err;
 299 5060d5a1 2022-01-10 stsp 				r = fread(content, 1, buf[0], o->f);
 300 5060d5a1 2022-01-10 stsp 				if (r != buf[0])
 301 5060d5a1 2022-01-10 stsp 					return got_ferror(o->f, GOT_ERR_IO);
 302 5060d5a1 2022-01-10 stsp 				err = append(&m->delta_buf, &len, &delta_size,
 303 5060d5a1 2022-01-10 stsp 				    content, buf[0]);
 304 5060d5a1 2022-01-10 stsp 				if (err)
 305 5060d5a1 2022-01-10 stsp 					return err;
 306 5060d5a1 2022-01-10 stsp 				n += buf[0];
 307 5060d5a1 2022-01-10 stsp 			}
 308 5060d5a1 2022-01-10 stsp 		}
 309 5060d5a1 2022-01-10 stsp 	}
 310 5060d5a1 2022-01-10 stsp 
 311 5060d5a1 2022-01-10 stsp 	m->delta_len = len;
 312 5060d5a1 2022-01-10 stsp 	return NULL;
 313 e6bcace5 2021-06-22 stsp }
 314 e6bcace5 2021-06-22 stsp 
 315 74881701 2021-10-15 stsp static const struct got_error *
 316 74881701 2021-10-15 stsp encode_delta(struct got_pack_meta *m, struct got_raw_object *o,
 317 74881701 2021-10-15 stsp     struct got_delta_instruction *deltas, int ndeltas,
 318 a319ca8c 2021-10-15 stsp     off_t base_size, FILE *f)
 319 a319ca8c 2021-10-15 stsp {
 320 a319ca8c 2021-10-15 stsp 	unsigned char buf[16], *bp;
 321 a319ca8c 2021-10-15 stsp 	int i, j;
 322 a319ca8c 2021-10-15 stsp 	off_t n;
 323 a319ca8c 2021-10-15 stsp 	size_t w;
 324 a319ca8c 2021-10-15 stsp 	struct got_delta_instruction *d;
 325 a319ca8c 2021-10-15 stsp 
 326 a319ca8c 2021-10-15 stsp 	/* base object size */
 327 a319ca8c 2021-10-15 stsp 	buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
 328 a319ca8c 2021-10-15 stsp 	n = base_size >> GOT_DELTA_SIZE_SHIFT;
 329 a319ca8c 2021-10-15 stsp 	for (i = 1; n > 0; i++) {
 330 a319ca8c 2021-10-15 stsp 		buf[i - 1] |= GOT_DELTA_SIZE_MORE;
 331 a319ca8c 2021-10-15 stsp 		buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
 332 a319ca8c 2021-10-15 stsp 		n >>= GOT_DELTA_SIZE_SHIFT;
 333 a319ca8c 2021-10-15 stsp 	}
 334 a319ca8c 2021-10-15 stsp 	w = fwrite(buf, 1, i, f);
 335 a319ca8c 2021-10-15 stsp 	if (w != i)
 336 a319ca8c 2021-10-15 stsp 		return got_ferror(f, GOT_ERR_IO);
 337 a319ca8c 2021-10-15 stsp 
 338 a319ca8c 2021-10-15 stsp 	/* target object size */
 339 a319ca8c 2021-10-15 stsp 	buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
 340 a319ca8c 2021-10-15 stsp 	n = o->size >> GOT_DELTA_SIZE_SHIFT;
 341 a319ca8c 2021-10-15 stsp 	for (i = 1; n > 0; i++) {
 342 a319ca8c 2021-10-15 stsp 		buf[i - 1] |= GOT_DELTA_SIZE_MORE;
 343 a319ca8c 2021-10-15 stsp 		buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
 344 a319ca8c 2021-10-15 stsp 		n >>= GOT_DELTA_SIZE_SHIFT;
 345 a319ca8c 2021-10-15 stsp 	}
 346 a319ca8c 2021-10-15 stsp 	w = fwrite(buf, 1, i, f);
 347 a319ca8c 2021-10-15 stsp 	if (w != i)
 348 a319ca8c 2021-10-15 stsp 		return got_ferror(f, GOT_ERR_IO);
 349 a319ca8c 2021-10-15 stsp 
 350 a319ca8c 2021-10-15 stsp 	for (j = 0; j < ndeltas; j++) {
 351 a319ca8c 2021-10-15 stsp 		d = &deltas[j];
 352 a319ca8c 2021-10-15 stsp 		if (d->copy) {
 353 a319ca8c 2021-10-15 stsp 			n = d->offset;
 354 a319ca8c 2021-10-15 stsp 			bp = &buf[1];
 355 a319ca8c 2021-10-15 stsp 			buf[0] = GOT_DELTA_BASE_COPY;
 356 a319ca8c 2021-10-15 stsp 			for (i = 0; i < 4; i++) {
 357 a319ca8c 2021-10-15 stsp 				/* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
 358 a319ca8c 2021-10-15 stsp 				buf[0] |= 1 << i;
 359 a319ca8c 2021-10-15 stsp 				*bp++ = n & 0xff;
 360 a319ca8c 2021-10-15 stsp 				n >>= 8;
 361 a319ca8c 2021-10-15 stsp 				if (n == 0)
 362 a319ca8c 2021-10-15 stsp 					break;
 363 a319ca8c 2021-10-15 stsp 			}
 364 a319ca8c 2021-10-15 stsp 
 365 a319ca8c 2021-10-15 stsp 			n = d->len;
 366 a319ca8c 2021-10-15 stsp 			if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
 367 a319ca8c 2021-10-15 stsp 				/* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
 368 a319ca8c 2021-10-15 stsp 				for (i = 0; i < 3 && n > 0; i++) {
 369 a319ca8c 2021-10-15 stsp 					buf[0] |= 1 << (i + 4);
 370 a319ca8c 2021-10-15 stsp 					*bp++ = n & 0xff;
 371 a319ca8c 2021-10-15 stsp 					n >>= 8;
 372 a319ca8c 2021-10-15 stsp 				}
 373 a319ca8c 2021-10-15 stsp 			}
 374 a319ca8c 2021-10-15 stsp 			w = fwrite(buf, 1, bp - buf, f);
 375 a319ca8c 2021-10-15 stsp 			if (w != bp - buf)
 376 a319ca8c 2021-10-15 stsp 				return got_ferror(f, GOT_ERR_IO);
 377 64a8571e 2022-01-07 stsp 		} else if (o->f == NULL) {
 378 64a8571e 2022-01-07 stsp 			n = 0;
 379 64a8571e 2022-01-07 stsp 			while (n != d->len) {
 380 64a8571e 2022-01-07 stsp 				buf[0] = (d->len - n < 127) ? d->len - n : 127;
 381 64a8571e 2022-01-07 stsp 				w = fwrite(buf, 1, 1, f);
 382 64a8571e 2022-01-07 stsp 				if (w != 1)
 383 64a8571e 2022-01-07 stsp 					return got_ferror(f, GOT_ERR_IO);
 384 64a8571e 2022-01-07 stsp 				w = fwrite(o->data + o->hdrlen + d->offset + n,
 385 64a8571e 2022-01-07 stsp 				    1, buf[0], f);
 386 64a8571e 2022-01-07 stsp 				if (w != buf[0])
 387 64a8571e 2022-01-07 stsp 					return got_ferror(f, GOT_ERR_IO);
 388 64a8571e 2022-01-07 stsp 				n += buf[0];
 389 64a8571e 2022-01-07 stsp 			}
 390 a319ca8c 2021-10-15 stsp 		} else {
 391 a319ca8c 2021-10-15 stsp 			char content[128];
 392 a319ca8c 2021-10-15 stsp 			size_t r;
 393 a319ca8c 2021-10-15 stsp 			if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1)
 394 a319ca8c 2021-10-15 stsp 				return got_error_from_errno("fseeko");
 395 a319ca8c 2021-10-15 stsp 			n = 0;
 396 a319ca8c 2021-10-15 stsp 			while (n != d->len) {
 397 a319ca8c 2021-10-15 stsp 				buf[0] = (d->len - n < 127) ? d->len - n : 127;
 398 a319ca8c 2021-10-15 stsp 				w = fwrite(buf, 1, 1, f);
 399 a319ca8c 2021-10-15 stsp 				if (w != 1)
 400 a319ca8c 2021-10-15 stsp 					return got_ferror(f, GOT_ERR_IO);
 401 a319ca8c 2021-10-15 stsp 				r = fread(content, 1, buf[0], o->f);
 402 a319ca8c 2021-10-15 stsp 				if (r != buf[0])
 403 a319ca8c 2021-10-15 stsp 					return got_ferror(o->f, GOT_ERR_IO);
 404 a319ca8c 2021-10-15 stsp 				w = fwrite(content, 1, buf[0], f);
 405 a319ca8c 2021-10-15 stsp 				if (w != buf[0])
 406 a319ca8c 2021-10-15 stsp 					return got_ferror(f, GOT_ERR_IO);
 407 a319ca8c 2021-10-15 stsp 				n += buf[0];
 408 a319ca8c 2021-10-15 stsp 			}
 409 a319ca8c 2021-10-15 stsp 		}
 410 a319ca8c 2021-10-15 stsp 	}
 411 e6bcace5 2021-06-22 stsp 
 412 5060d5a1 2022-01-10 stsp 	m->delta_len = ftello(f) - m->delta_offset;
 413 a319ca8c 2021-10-15 stsp 	return NULL;
 414 a319ca8c 2021-10-15 stsp }
 415 211cfef0 2022-01-05 stsp 
 416 211cfef0 2022-01-05 stsp static const struct got_error *
 417 211cfef0 2022-01-05 stsp report_progress(got_pack_progress_cb progress_cb, void *progress_arg,
 418 b8af7c06 2022-03-15 stsp     struct got_ratelimit *rl, int ncolored, int nfound, int ntrees,
 419 b8af7c06 2022-03-15 stsp     off_t packfile_size, int ncommits, int nobj_total, int obj_deltify,
 420 b8af7c06 2022-03-15 stsp     int nobj_written)
 421 211cfef0 2022-01-05 stsp {
 422 211cfef0 2022-01-05 stsp 	const struct got_error *err;
 423 211cfef0 2022-01-05 stsp 	int elapsed;
 424 211cfef0 2022-01-05 stsp 
 425 211cfef0 2022-01-05 stsp 	if (progress_cb == NULL)
 426 211cfef0 2022-01-05 stsp 		return NULL;
 427 211cfef0 2022-01-05 stsp 
 428 211cfef0 2022-01-05 stsp 	err = got_ratelimit_check(&elapsed, rl);
 429 211cfef0 2022-01-05 stsp 	if (err || !elapsed)
 430 211cfef0 2022-01-05 stsp 		return err;
 431 a319ca8c 2021-10-15 stsp 
 432 b8af7c06 2022-03-15 stsp 	return progress_cb(progress_arg, ncolored, nfound, ntrees,
 433 b8af7c06 2022-03-15 stsp 	    packfile_size, ncommits, nobj_total, obj_deltify, nobj_written);
 434 211cfef0 2022-01-05 stsp }
 435 a319ca8c 2021-10-15 stsp 
 436 e6bcace5 2021-06-22 stsp static const struct got_error *
 437 67fd6849 2022-02-13 stsp add_meta(struct got_pack_meta *m, struct got_pack_metavec *v)
 438 67fd6849 2022-02-13 stsp {
 439 67fd6849 2022-02-13 stsp 	if (v->nmeta == v->metasz){
 440 67fd6849 2022-02-13 stsp 		size_t newsize = 2 * v->metasz;
 441 67fd6849 2022-02-13 stsp 		struct got_pack_meta **new;
 442 67fd6849 2022-02-13 stsp 		new = reallocarray(v->meta, newsize, sizeof(*new));
 443 67fd6849 2022-02-13 stsp 		if (new == NULL)
 444 67fd6849 2022-02-13 stsp 			return got_error_from_errno("reallocarray");
 445 67fd6849 2022-02-13 stsp 		v->meta = new;
 446 67fd6849 2022-02-13 stsp 		v->metasz = newsize; 
 447 67fd6849 2022-02-13 stsp 	}
 448 67fd6849 2022-02-13 stsp 
 449 67fd6849 2022-02-13 stsp 	v->meta[v->nmeta++] = m;
 450 67fd6849 2022-02-13 stsp 	return NULL;
 451 67fd6849 2022-02-13 stsp }
 452 67fd6849 2022-02-13 stsp 
 453 67fd6849 2022-02-13 stsp static const struct got_error *
 454 67fd6849 2022-02-13 stsp reuse_delta(int idx, struct got_pack_meta *m, struct got_pack_metavec *v,
 455 67fd6849 2022-02-13 stsp     struct got_object_idset *idset, struct got_pack *pack,
 456 67fd6849 2022-02-13 stsp     struct got_packidx *packidx, int delta_cache_fd,
 457 67fd6849 2022-02-13 stsp     struct got_repository *repo)
 458 67fd6849 2022-02-13 stsp {
 459 67fd6849 2022-02-13 stsp 	const struct got_error *err = NULL;
 460 67fd6849 2022-02-13 stsp 	struct got_pack_meta *base = NULL;
 461 67fd6849 2022-02-13 stsp 	struct got_object_id *base_obj_id = NULL;
 462 67fd6849 2022-02-13 stsp 	off_t delta_len = 0, delta_offset = 0, delta_cache_offset = 0;
 463 67fd6849 2022-02-13 stsp 	uint64_t base_size, result_size;
 464 67fd6849 2022-02-13 stsp 
 465 67fd6849 2022-02-13 stsp 	if (m->have_reused_delta)
 466 67fd6849 2022-02-13 stsp 		return NULL;
 467 67fd6849 2022-02-13 stsp 
 468 67fd6849 2022-02-13 stsp 	err = got_object_read_raw_delta(&base_size, &result_size, &delta_len,
 469 67fd6849 2022-02-13 stsp 	    &delta_offset, &delta_cache_offset, &base_obj_id, delta_cache_fd,
 470 67fd6849 2022-02-13 stsp 	    packidx, idx, &m->id, repo);
 471 67fd6849 2022-02-13 stsp 	if (err)
 472 67fd6849 2022-02-13 stsp 		return err;
 473 67fd6849 2022-02-13 stsp 
 474 67fd6849 2022-02-13 stsp 	if (delta_offset + delta_len < delta_offset)
 475 67fd6849 2022-02-13 stsp 		return got_error(GOT_ERR_BAD_PACKFILE);
 476 67fd6849 2022-02-13 stsp 
 477 67fd6849 2022-02-13 stsp 	base = got_object_idset_get(idset, base_obj_id);
 478 67fd6849 2022-02-13 stsp 	if (base == NULL)
 479 67fd6849 2022-02-13 stsp 		goto done;
 480 67fd6849 2022-02-13 stsp 
 481 67fd6849 2022-02-13 stsp 	m->delta_len = delta_len;
 482 67fd6849 2022-02-13 stsp 	m->delta_offset = delta_cache_offset;
 483 67fd6849 2022-02-13 stsp 	m->prev = base;
 484 67fd6849 2022-02-13 stsp 	m->size = result_size;
 485 67fd6849 2022-02-13 stsp 	m->have_reused_delta = 1;
 486 67fd6849 2022-02-13 stsp 	m->reused_delta_offset = delta_offset;
 487 67fd6849 2022-02-13 stsp 	m->base_obj_id = base_obj_id;
 488 67fd6849 2022-02-13 stsp 	base_obj_id = NULL;
 489 67fd6849 2022-02-13 stsp 	err = add_meta(m, v);
 490 67fd6849 2022-02-13 stsp done:
 491 67fd6849 2022-02-13 stsp 	free(base_obj_id);
 492 67fd6849 2022-02-13 stsp 	return err;
 493 67fd6849 2022-02-13 stsp }
 494 67fd6849 2022-02-13 stsp 
 495 67fd6849 2022-02-13 stsp static const struct got_error *
 496 67fd6849 2022-02-13 stsp find_pack_for_reuse(struct got_packidx **best_packidx,
 497 67fd6849 2022-02-13 stsp     struct got_repository *repo)
 498 67fd6849 2022-02-13 stsp {
 499 9b576444 2022-03-14 stsp 	const struct got_error *err = NULL;
 500 67fd6849 2022-02-13 stsp 	struct got_pathlist_entry *pe;
 501 67fd6849 2022-02-13 stsp 	const char *best_packidx_path = NULL;
 502 67fd6849 2022-02-13 stsp 	int nobj_max = 0;
 503 67fd6849 2022-02-13 stsp 
 504 67fd6849 2022-02-13 stsp 	*best_packidx = NULL;
 505 67fd6849 2022-02-13 stsp 
 506 9b576444 2022-03-14 stsp 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
 507 67fd6849 2022-02-13 stsp 		const char *path_packidx = pe->path;
 508 67fd6849 2022-02-13 stsp 		struct got_packidx *packidx;
 509 67fd6849 2022-02-13 stsp 		int nobj;
 510 67fd6849 2022-02-13 stsp 
 511 67fd6849 2022-02-13 stsp 		err = got_repo_get_packidx(&packidx, path_packidx, repo);
 512 67fd6849 2022-02-13 stsp 		if (err)
 513 67fd6849 2022-02-13 stsp 			break;
 514 67fd6849 2022-02-13 stsp 
 515 67fd6849 2022-02-13 stsp 		nobj = be32toh(packidx->hdr.fanout_table[0xff]);
 516 67fd6849 2022-02-13 stsp 		if (nobj > nobj_max) {
 517 67fd6849 2022-02-13 stsp 			best_packidx_path = path_packidx;
 518 67fd6849 2022-02-13 stsp 			nobj_max = nobj;
 519 67fd6849 2022-02-13 stsp 		}
 520 67fd6849 2022-02-13 stsp 	}
 521 67fd6849 2022-02-13 stsp 
 522 67fd6849 2022-02-13 stsp 	if (best_packidx_path) {
 523 67fd6849 2022-02-13 stsp 		err = got_repo_get_packidx(best_packidx, best_packidx_path,
 524 67fd6849 2022-02-13 stsp 		    repo);
 525 67fd6849 2022-02-13 stsp 	}
 526 67fd6849 2022-02-13 stsp 
 527 67fd6849 2022-02-13 stsp 	return err;
 528 67fd6849 2022-02-13 stsp }
 529 67fd6849 2022-02-13 stsp 
 530 67fd6849 2022-02-13 stsp struct search_deltas_arg {
 531 67fd6849 2022-02-13 stsp 	struct got_packidx *packidx;
 532 67fd6849 2022-02-13 stsp 	struct got_pack *pack;
 533 67fd6849 2022-02-13 stsp 	struct got_object_idset *idset;
 534 67fd6849 2022-02-13 stsp 	struct got_pack_metavec *v;
 535 67fd6849 2022-02-13 stsp 	int delta_cache_fd;
 536 67fd6849 2022-02-13 stsp 	struct got_repository *repo;
 537 67fd6849 2022-02-13 stsp 	got_pack_progress_cb progress_cb;
 538 67fd6849 2022-02-13 stsp 	void *progress_arg;
 539 67fd6849 2022-02-13 stsp 	struct got_ratelimit *rl;
 540 67fd6849 2022-02-13 stsp 	got_cancel_cb cancel_cb;
 541 67fd6849 2022-02-13 stsp 	void *cancel_arg;
 542 b8af7c06 2022-03-15 stsp 	int ncolored;
 543 b8af7c06 2022-03-15 stsp 	int nfound;
 544 b8af7c06 2022-03-15 stsp 	int ntrees;
 545 67fd6849 2022-02-13 stsp 	int ncommits;
 546 67fd6849 2022-02-13 stsp };
 547 67fd6849 2022-02-13 stsp 
 548 67fd6849 2022-02-13 stsp static const struct got_error *
 549 67fd6849 2022-02-13 stsp search_delta_for_object(struct got_object_id *id, void *data, void *arg)
 550 67fd6849 2022-02-13 stsp {
 551 67fd6849 2022-02-13 stsp 	const struct got_error *err;
 552 67fd6849 2022-02-13 stsp 	struct got_pack_meta *m = data;
 553 67fd6849 2022-02-13 stsp 	struct search_deltas_arg *a = arg;
 554 67fd6849 2022-02-13 stsp 	int obj_idx;
 555 67fd6849 2022-02-13 stsp 	struct got_object *obj = NULL;
 556 67fd6849 2022-02-13 stsp 
 557 67fd6849 2022-02-13 stsp 	if (a->cancel_cb) {
 558 67fd6849 2022-02-13 stsp 		err = (*a->cancel_cb)(a->cancel_arg);
 559 67fd6849 2022-02-13 stsp 		if (err)
 560 67fd6849 2022-02-13 stsp 			return err;
 561 67fd6849 2022-02-13 stsp 	}
 562 67fd6849 2022-02-13 stsp 
 563 67fd6849 2022-02-13 stsp 	if (!got_repo_check_packidx_bloom_filter(a->repo,
 564 67fd6849 2022-02-13 stsp 	    a->packidx->path_packidx, id))
 565 67fd6849 2022-02-13 stsp 		return NULL;
 566 67fd6849 2022-02-13 stsp 
 567 67fd6849 2022-02-13 stsp 	obj_idx = got_packidx_get_object_idx(a->packidx, id);
 568 67fd6849 2022-02-13 stsp 	if (obj_idx == -1)
 569 67fd6849 2022-02-13 stsp 		return NULL;
 570 67fd6849 2022-02-13 stsp 
 571 67fd6849 2022-02-13 stsp 	/* TODO:
 572 67fd6849 2022-02-13 stsp 	 * Opening and closing an object just to check its flags
 573 67fd6849 2022-02-13 stsp 	 * is a bit expensive. We could have an imsg which requests
 574 67fd6849 2022-02-13 stsp 	 * plain type/size information for an object without doing
 575 67fd6849 2022-02-13 stsp 	 * work such as traversing the object's entire delta chain
 576 67fd6849 2022-02-13 stsp 	 * to find the base object type, and other such info which
 577 67fd6849 2022-02-13 stsp 	 * we don't really need here.
 578 67fd6849 2022-02-13 stsp 	 */
 579 67fd6849 2022-02-13 stsp 	err = got_object_open_from_packfile(&obj, &m->id, a->pack,
 580 67fd6849 2022-02-13 stsp 	    a->packidx, obj_idx, a->repo);
 581 67fd6849 2022-02-13 stsp 	if (err)
 582 67fd6849 2022-02-13 stsp 		return err;
 583 67fd6849 2022-02-13 stsp 
 584 67fd6849 2022-02-13 stsp 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
 585 67fd6849 2022-02-13 stsp 		reuse_delta(obj_idx, m, a->v, a->idset, a->pack, a->packidx,
 586 67fd6849 2022-02-13 stsp 		    a->delta_cache_fd, a->repo);
 587 67fd6849 2022-02-13 stsp 		if (err)
 588 67fd6849 2022-02-13 stsp 			goto done;
 589 67fd6849 2022-02-13 stsp 		err = report_progress(a->progress_cb, a->progress_arg, a->rl,
 590 b8af7c06 2022-03-15 stsp 		    a->ncolored, a->nfound, a->ntrees, 0L, a->ncommits,
 591 b8af7c06 2022-03-15 stsp 		    got_object_idset_num_elements(a->idset), a->v->nmeta, 0);
 592 67fd6849 2022-02-13 stsp 	}
 593 67fd6849 2022-02-13 stsp done:
 594 67fd6849 2022-02-13 stsp 	got_object_close(obj);
 595 67fd6849 2022-02-13 stsp 	return err;
 596 67fd6849 2022-02-13 stsp }
 597 67fd6849 2022-02-13 stsp 
 598 67fd6849 2022-02-13 stsp static const struct got_error *
 599 67fd6849 2022-02-13 stsp search_deltas(struct got_pack_metavec *v, struct got_object_idset *idset,
 600 b8af7c06 2022-03-15 stsp     int delta_cache_fd, int ncolored, int nfound, int ntrees, int ncommits,
 601 b8af7c06 2022-03-15 stsp     struct got_repository *repo,
 602 67fd6849 2022-02-13 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
 603 67fd6849 2022-02-13 stsp     struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
 604 67fd6849 2022-02-13 stsp {
 605 67fd6849 2022-02-13 stsp 	const struct got_error *err = NULL;
 606 67fd6849 2022-02-13 stsp 	char *path_packfile = NULL;
 607 67fd6849 2022-02-13 stsp 	struct got_packidx *packidx;
 608 67fd6849 2022-02-13 stsp 	struct got_pack *pack;
 609 67fd6849 2022-02-13 stsp 	struct search_deltas_arg sda;
 610 67fd6849 2022-02-13 stsp 
 611 67fd6849 2022-02-13 stsp 	err = find_pack_for_reuse(&packidx, repo);
 612 67fd6849 2022-02-13 stsp 	if (err)
 613 67fd6849 2022-02-13 stsp 		return err;
 614 67fd6849 2022-02-13 stsp 
 615 67fd6849 2022-02-13 stsp 	if (packidx == NULL)
 616 67fd6849 2022-02-13 stsp 		return NULL;
 617 67fd6849 2022-02-13 stsp 
 618 67fd6849 2022-02-13 stsp 	err = got_packidx_get_packfile_path(&path_packfile,
 619 67fd6849 2022-02-13 stsp 	    packidx->path_packidx);
 620 67fd6849 2022-02-13 stsp 	if (err)
 621 67fd6849 2022-02-13 stsp 		return err;
 622 67fd6849 2022-02-13 stsp 
 623 67fd6849 2022-02-13 stsp 	pack = got_repo_get_cached_pack(repo, path_packfile);
 624 67fd6849 2022-02-13 stsp 	if (pack == NULL) {
 625 67fd6849 2022-02-13 stsp 		err = got_repo_cache_pack(&pack, repo, path_packfile, packidx);
 626 67fd6849 2022-02-13 stsp 		if (err)
 627 67fd6849 2022-02-13 stsp 			goto done;
 628 67fd6849 2022-02-13 stsp 	}
 629 67fd6849 2022-02-13 stsp 
 630 67fd6849 2022-02-13 stsp 	sda.packidx = packidx;
 631 67fd6849 2022-02-13 stsp 	sda.pack = pack;
 632 67fd6849 2022-02-13 stsp 	sda.idset = idset;
 633 67fd6849 2022-02-13 stsp 	sda.v = v;
 634 67fd6849 2022-02-13 stsp 	sda.delta_cache_fd = delta_cache_fd;
 635 67fd6849 2022-02-13 stsp 	sda.repo = repo;
 636 67fd6849 2022-02-13 stsp 	sda.progress_cb = progress_cb;
 637 67fd6849 2022-02-13 stsp 	sda.progress_arg = progress_arg;
 638 67fd6849 2022-02-13 stsp 	sda.rl = rl;
 639 67fd6849 2022-02-13 stsp 	sda.cancel_cb = cancel_cb;
 640 67fd6849 2022-02-13 stsp 	sda.cancel_arg = cancel_arg;
 641 b8af7c06 2022-03-15 stsp 	sda.ncolored = ncolored;
 642 b8af7c06 2022-03-15 stsp 	sda.nfound = nfound;
 643 b8af7c06 2022-03-15 stsp 	sda.ntrees = ntrees;
 644 67fd6849 2022-02-13 stsp 	sda.ncommits = ncommits;
 645 67fd6849 2022-02-13 stsp 	err = got_object_idset_for_each(idset, search_delta_for_object, &sda);
 646 67fd6849 2022-02-13 stsp done:
 647 67fd6849 2022-02-13 stsp 	free(path_packfile);
 648 67fd6849 2022-02-13 stsp 	return err;
 649 67fd6849 2022-02-13 stsp }
 650 67fd6849 2022-02-13 stsp 
 651 67fd6849 2022-02-13 stsp static const struct got_error *
 652 b8af7c06 2022-03-15 stsp pick_deltas(struct got_pack_meta **meta, int nmeta, int ncolored,
 653 b8af7c06 2022-03-15 stsp     int nfound, int ntrees, int ncommits, int nreused, FILE *delta_cache,
 654 b8af7c06 2022-03-15 stsp     struct got_repository *repo,
 655 05118f5a 2021-06-22 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
 656 211cfef0 2022-01-05 stsp     struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
 657 e6bcace5 2021-06-22 stsp {
 658 e6bcace5 2021-06-22 stsp 	const struct got_error *err = NULL;
 659 e6bcace5 2021-06-22 stsp 	struct got_pack_meta *m = NULL, *base = NULL;
 660 e6bcace5 2021-06-22 stsp 	struct got_raw_object *raw = NULL, *base_raw = NULL;
 661 74881701 2021-10-15 stsp 	struct got_delta_instruction *deltas = NULL, *best_deltas = NULL;
 662 5060d5a1 2022-01-10 stsp 	int i, j, ndeltas, best_ndeltas;
 663 5060d5a1 2022-01-10 stsp 	off_t size, best_size;
 664 4f4d853e 2021-10-24 stsp 	const int max_base_candidates = 3;
 665 402a5ec1 2022-01-10 stsp 	size_t delta_memsize = 0;
 666 402a5ec1 2022-01-10 stsp 	const size_t max_delta_memsize = 25 * GOT_DELTA_RESULT_SIZE_CACHED_MAX;
 667 cc7a354a 2021-10-15 stsp 	int outfd = -1;
 668 e6bcace5 2021-06-22 stsp 
 669 e6bcace5 2021-06-22 stsp 	qsort(meta, nmeta, sizeof(struct got_pack_meta *), delta_order_cmp);
 670 e6bcace5 2021-06-22 stsp 	for (i = 0; i < nmeta; i++) {
 671 e6bcace5 2021-06-22 stsp 		if (cancel_cb) {
 672 e6bcace5 2021-06-22 stsp 			err = (*cancel_cb)(cancel_arg);
 673 e6bcace5 2021-06-22 stsp 			if (err)
 674 e6bcace5 2021-06-22 stsp 				break;
 675 e6bcace5 2021-06-22 stsp 		}
 676 211cfef0 2022-01-05 stsp 		err = report_progress(progress_cb, progress_arg, rl,
 677 b8af7c06 2022-03-15 stsp 		    ncolored, nfound, ntrees, 0L, ncommits, nreused + nmeta,
 678 b8af7c06 2022-03-15 stsp 		    nreused + i, 0);
 679 211cfef0 2022-01-05 stsp 		if (err)
 680 211cfef0 2022-01-05 stsp 			goto done;
 681 e6bcace5 2021-06-22 stsp 		m = meta[i];
 682 e6bcace5 2021-06-22 stsp 
 683 e6bcace5 2021-06-22 stsp 		if (m->obj_type == GOT_OBJ_TYPE_COMMIT ||
 684 e6bcace5 2021-06-22 stsp 		    m->obj_type == GOT_OBJ_TYPE_TAG)
 685 e6bcace5 2021-06-22 stsp 			continue;
 686 e6bcace5 2021-06-22 stsp 
 687 94dac27c 2021-10-15 stsp 		err = got_object_raw_open(&raw, &outfd, repo, &m->id);
 688 e6bcace5 2021-06-22 stsp 		if (err)
 689 e6bcace5 2021-06-22 stsp 			goto done;
 690 600b755e 2021-10-14 stsp 		m->size = raw->size;
 691 e6bcace5 2021-06-22 stsp 
 692 64a8571e 2022-01-07 stsp 		if (raw->f == NULL) {
 693 64a8571e 2022-01-07 stsp 			err = got_deltify_init_mem(&m->dtab, raw->data,
 694 64a8571e 2022-01-07 stsp 			    raw->hdrlen, raw->size + raw->hdrlen);
 695 64a8571e 2022-01-07 stsp 		} else {
 696 64a8571e 2022-01-07 stsp 			err = got_deltify_init(&m->dtab, raw->f, raw->hdrlen,
 697 64a8571e 2022-01-07 stsp 			    raw->size + raw->hdrlen);
 698 64a8571e 2022-01-07 stsp 		}
 699 e6bcace5 2021-06-22 stsp 		if (err)
 700 e6bcace5 2021-06-22 stsp 			goto done;
 701 e6bcace5 2021-06-22 stsp 
 702 e6bcace5 2021-06-22 stsp 		if (i > max_base_candidates) {
 703 e6bcace5 2021-06-22 stsp 			struct got_pack_meta *n = NULL;
 704 e6bcace5 2021-06-22 stsp 			n = meta[i - (max_base_candidates + 1)];
 705 e6bcace5 2021-06-22 stsp 			got_deltify_free(n->dtab);
 706 e6bcace5 2021-06-22 stsp 			n->dtab = NULL;
 707 e6bcace5 2021-06-22 stsp 		}
 708 e6bcace5 2021-06-22 stsp 
 709 74881701 2021-10-15 stsp 		best_size = raw->size;
 710 74881701 2021-10-15 stsp 		best_ndeltas = 0;
 711 e6bcace5 2021-06-22 stsp 		for (j = MAX(0, i - max_base_candidates); j < i; j++) {
 712 e6bcace5 2021-06-22 stsp 			if (cancel_cb) {
 713 e6bcace5 2021-06-22 stsp 				err = (*cancel_cb)(cancel_arg);
 714 e6bcace5 2021-06-22 stsp 				if (err)
 715 e6bcace5 2021-06-22 stsp 					goto done;
 716 e6bcace5 2021-06-22 stsp 			}
 717 e6bcace5 2021-06-22 stsp 			base = meta[j];
 718 e6bcace5 2021-06-22 stsp 			/* long chains make unpacking slow, avoid such bases */
 719 22edbce7 2021-10-24 stsp 			if (base->nchain >= 128 ||
 720 e6bcace5 2021-06-22 stsp 			    base->obj_type != m->obj_type)
 721 e6bcace5 2021-06-22 stsp 				continue;
 722 e6bcace5 2021-06-22 stsp 
 723 d3c116bf 2021-10-15 stsp 			err = got_object_raw_open(&base_raw, &outfd, repo,
 724 94dac27c 2021-10-15 stsp 			    &base->id);
 725 e6bcace5 2021-06-22 stsp 			if (err)
 726 e6bcace5 2021-06-22 stsp 				goto done;
 727 67fd6849 2022-02-13 stsp 
 728 64a8571e 2022-01-07 stsp 			if (raw->f == NULL && base_raw->f == NULL) {
 729 64a8571e 2022-01-07 stsp 				err = got_deltify_mem_mem(&deltas, &ndeltas,
 730 64a8571e 2022-01-07 stsp 				    raw->data, raw->hdrlen,
 731 64a8571e 2022-01-07 stsp 				    raw->size + raw->hdrlen,
 732 64a8571e 2022-01-07 stsp 				    base->dtab, base_raw->data,
 733 64a8571e 2022-01-07 stsp 				    base_raw->hdrlen,
 734 64a8571e 2022-01-07 stsp 				    base_raw->size + base_raw->hdrlen);
 735 64a8571e 2022-01-07 stsp 			} else if (raw->f == NULL) {
 736 64a8571e 2022-01-07 stsp 				err = got_deltify_mem_file(&deltas, &ndeltas,
 737 64a8571e 2022-01-07 stsp 				    raw->data, raw->hdrlen,
 738 64a8571e 2022-01-07 stsp 				    raw->size + raw->hdrlen,
 739 64a8571e 2022-01-07 stsp 				    base->dtab, base_raw->f,
 740 64a8571e 2022-01-07 stsp 				    base_raw->hdrlen,
 741 64a8571e 2022-01-07 stsp 				    base_raw->size + base_raw->hdrlen);
 742 64a8571e 2022-01-07 stsp 			} else if (base_raw->f == NULL) {
 743 64a8571e 2022-01-07 stsp 				err = got_deltify_file_mem(&deltas, &ndeltas,
 744 64a8571e 2022-01-07 stsp 				    raw->f, raw->hdrlen,
 745 64a8571e 2022-01-07 stsp 				    raw->size + raw->hdrlen,
 746 64a8571e 2022-01-07 stsp 				    base->dtab, base_raw->data,
 747 64a8571e 2022-01-07 stsp 				    base_raw->hdrlen,
 748 64a8571e 2022-01-07 stsp 				    base_raw->size + base_raw->hdrlen);
 749 64a8571e 2022-01-07 stsp 			} else {
 750 64a8571e 2022-01-07 stsp 				err = got_deltify(&deltas, &ndeltas,
 751 64a8571e 2022-01-07 stsp 				    raw->f, raw->hdrlen,
 752 64a8571e 2022-01-07 stsp 				    raw->size + raw->hdrlen,
 753 64a8571e 2022-01-07 stsp 				    base->dtab, base_raw->f, base_raw->hdrlen,
 754 64a8571e 2022-01-07 stsp 				    base_raw->size + base_raw->hdrlen);
 755 64a8571e 2022-01-07 stsp 			}
 756 e6bcace5 2021-06-22 stsp 			got_object_raw_close(base_raw);
 757 e6bcace5 2021-06-22 stsp 			base_raw = NULL;
 758 e6bcace5 2021-06-22 stsp 			if (err)
 759 e6bcace5 2021-06-22 stsp 				goto done;
 760 e6bcace5 2021-06-22 stsp 
 761 e6bcace5 2021-06-22 stsp 			size = delta_size(deltas, ndeltas);
 762 74881701 2021-10-15 stsp 			if (size + 32 < best_size){
 763 e6bcace5 2021-06-22 stsp 				/*
 764 e6bcace5 2021-06-22 stsp 				 * if we already picked a best delta,
 765 e6bcace5 2021-06-22 stsp 				 * replace it.
 766 e6bcace5 2021-06-22 stsp 				 */
 767 74881701 2021-10-15 stsp 				best_size = size;
 768 74881701 2021-10-15 stsp 				free(best_deltas);
 769 74881701 2021-10-15 stsp 				best_deltas = deltas;
 770 74881701 2021-10-15 stsp 				best_ndeltas = ndeltas;
 771 74881701 2021-10-15 stsp 				deltas = NULL;
 772 e6bcace5 2021-06-22 stsp 				m->nchain = base->nchain + 1;
 773 e6bcace5 2021-06-22 stsp 				m->prev = base;
 774 e6bcace5 2021-06-22 stsp 				m->head = base->head;
 775 e6bcace5 2021-06-22 stsp 				if (m->head == NULL)
 776 e6bcace5 2021-06-22 stsp 					m->head = base;
 777 e6bcace5 2021-06-22 stsp 			} else {
 778 e6bcace5 2021-06-22 stsp 				free(deltas);
 779 e6bcace5 2021-06-22 stsp 				deltas = NULL;
 780 e6bcace5 2021-06-22 stsp 				ndeltas = 0;
 781 e6bcace5 2021-06-22 stsp 			}
 782 e6bcace5 2021-06-22 stsp 		}
 783 e6bcace5 2021-06-22 stsp 
 784 74881701 2021-10-15 stsp 		if (best_ndeltas > 0) {
 785 402a5ec1 2022-01-10 stsp 			if (best_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX &&
 786 402a5ec1 2022-01-10 stsp 			    delta_memsize + best_size <= max_delta_memsize) {
 787 402a5ec1 2022-01-10 stsp 				delta_memsize += best_size;
 788 5060d5a1 2022-01-10 stsp 				err = encode_delta_in_mem(m, raw, best_deltas,
 789 5060d5a1 2022-01-10 stsp 				    best_ndeltas, best_size, m->prev->size);
 790 5060d5a1 2022-01-10 stsp 			} else {
 791 5060d5a1 2022-01-10 stsp 				m->delta_offset = ftello(delta_cache);
 792 67fd6849 2022-02-13 stsp 				/*
 793 67fd6849 2022-02-13 stsp 				 * TODO:
 794 67fd6849 2022-02-13 stsp 				 * Storing compressed delta data in the delta
 795 67fd6849 2022-02-13 stsp 				 * cache file would probably be more efficient
 796 67fd6849 2022-02-13 stsp 				 * than writing uncompressed delta data here
 797 67fd6849 2022-02-13 stsp 				 * and compressing it while writing the pack
 798 67fd6849 2022-02-13 stsp 				 * file. This would also allow for reusing
 799 67fd6849 2022-02-13 stsp 				 * deltas in their compressed form.
 800 67fd6849 2022-02-13 stsp 				 */
 801 5060d5a1 2022-01-10 stsp 				err = encode_delta(m, raw, best_deltas,
 802 5060d5a1 2022-01-10 stsp 				    best_ndeltas, m->prev->size, delta_cache);
 803 5060d5a1 2022-01-10 stsp 			}
 804 74881701 2021-10-15 stsp 			free(best_deltas);
 805 74881701 2021-10-15 stsp 			best_deltas = NULL;
 806 74881701 2021-10-15 stsp 			best_ndeltas = 0;
 807 74881701 2021-10-15 stsp 			if (err)
 808 74881701 2021-10-15 stsp 				goto done;
 809 74881701 2021-10-15 stsp 		}
 810 74881701 2021-10-15 stsp 
 811 e6bcace5 2021-06-22 stsp 		got_object_raw_close(raw);
 812 e6bcace5 2021-06-22 stsp 		raw = NULL;
 813 e6bcace5 2021-06-22 stsp 	}
 814 e6bcace5 2021-06-22 stsp done:
 815 e6bcace5 2021-06-22 stsp 	for (i = MAX(0, nmeta - max_base_candidates); i < nmeta; i++) {
 816 e6bcace5 2021-06-22 stsp 		got_deltify_free(meta[i]->dtab);
 817 e6bcace5 2021-06-22 stsp 		meta[i]->dtab = NULL;
 818 e6bcace5 2021-06-22 stsp 	}
 819 e6bcace5 2021-06-22 stsp 	if (raw)
 820 e6bcace5 2021-06-22 stsp 		got_object_raw_close(raw);
 821 e6bcace5 2021-06-22 stsp 	if (base_raw)
 822 e6bcace5 2021-06-22 stsp 		got_object_raw_close(base_raw);
 823 cc7a354a 2021-10-15 stsp 	if (outfd != -1 && close(outfd) == -1 && err == NULL)
 824 cc7a354a 2021-10-15 stsp 		err = got_error_from_errno("close");
 825 74881701 2021-10-15 stsp 	free(deltas);
 826 74881701 2021-10-15 stsp 	free(best_deltas);
 827 e6bcace5 2021-06-22 stsp 	return err;
 828 e6bcace5 2021-06-22 stsp }
 829 e6bcace5 2021-06-22 stsp 
 830 e6bcace5 2021-06-22 stsp static const struct got_error *
 831 05118f5a 2021-06-22 stsp search_packidx(int *found, struct got_object_id *id,
 832 05118f5a 2021-06-22 stsp     struct got_repository *repo)
 833 05118f5a 2021-06-22 stsp {
 834 05118f5a 2021-06-22 stsp 	const struct got_error *err = NULL;
 835 05118f5a 2021-06-22 stsp 	struct got_packidx *packidx = NULL;
 836 05118f5a 2021-06-22 stsp 	int idx;
 837 05118f5a 2021-06-22 stsp 
 838 05118f5a 2021-06-22 stsp 	*found = 0;
 839 05118f5a 2021-06-22 stsp 
 840 05118f5a 2021-06-22 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
 841 05118f5a 2021-06-22 stsp 	if (err == NULL)
 842 05118f5a 2021-06-22 stsp 		*found = 1; /* object is already packed */
 843 05118f5a 2021-06-22 stsp 	else if (err->code == GOT_ERR_NO_OBJ)
 844 05118f5a 2021-06-22 stsp 		err = NULL;
 845 05118f5a 2021-06-22 stsp 	return err;
 846 05118f5a 2021-06-22 stsp }
 847 05118f5a 2021-06-22 stsp 
 848 05118f5a 2021-06-22 stsp static const struct got_error *
 849 67fd6849 2022-02-13 stsp add_object(int want_meta, struct got_object_idset *idset,
 850 e6bcace5 2021-06-22 stsp     struct got_object_id *id, const char *path, int obj_type,
 851 6863cbf9 2022-03-21 stsp     time_t mtime, int loose_obj_only, struct got_repository *repo,
 852 6863cbf9 2022-03-21 stsp     int *ncolored, int *nfound, int *ntrees,
 853 6863cbf9 2022-03-21 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
 854 6863cbf9 2022-03-21 stsp     struct got_ratelimit *rl)
 855 e6bcace5 2021-06-22 stsp {
 856 e6bcace5 2021-06-22 stsp 	const struct got_error *err;
 857 67fd6849 2022-02-13 stsp 	struct got_pack_meta *m = NULL;
 858 e6bcace5 2021-06-22 stsp 
 859 05118f5a 2021-06-22 stsp 	if (loose_obj_only) {
 860 05118f5a 2021-06-22 stsp 		int is_packed;
 861 05118f5a 2021-06-22 stsp 		err = search_packidx(&is_packed, id, repo);
 862 05118f5a 2021-06-22 stsp 		if (err)
 863 05118f5a 2021-06-22 stsp 			return err;
 864 cdeb891a 2022-03-21 stsp 		if (is_packed && want_meta)
 865 05118f5a 2021-06-22 stsp 			return NULL;
 866 05118f5a 2021-06-22 stsp 	}
 867 05118f5a 2021-06-22 stsp 
 868 67fd6849 2022-02-13 stsp 	if (want_meta) {
 869 67fd6849 2022-02-13 stsp 		err = alloc_meta(&m, id, path, obj_type, mtime);
 870 6863cbf9 2022-03-21 stsp 		if (err)
 871 6863cbf9 2022-03-21 stsp 			return err;
 872 6863cbf9 2022-03-21 stsp 
 873 6863cbf9 2022-03-21 stsp 		(*nfound)++;
 874 6863cbf9 2022-03-21 stsp 		err = report_progress(progress_cb, progress_arg, rl,
 875 6863cbf9 2022-03-21 stsp 		    *ncolored, *nfound, *ntrees, 0L, 0, 0, 0, 0);
 876 bb6672b6 2022-04-14 tb 		if (err) {
 877 bb6672b6 2022-04-14 tb 			clear_meta(m);
 878 bb6672b6 2022-04-14 tb 			free(m);
 879 67fd6849 2022-02-13 stsp 			return err;
 880 bb6672b6 2022-04-14 tb 		}
 881 e6bcace5 2021-06-22 stsp 	}
 882 e6bcace5 2021-06-22 stsp 
 883 bb6672b6 2022-04-14 tb 	err = got_object_idset_add(idset, id, m);
 884 bb6672b6 2022-04-14 tb 	if (err) {
 885 bb6672b6 2022-04-14 tb 		clear_meta(m);
 886 bb6672b6 2022-04-14 tb 		free(m);
 887 bb6672b6 2022-04-14 tb 	}
 888 bb6672b6 2022-04-14 tb 	return err;
 889 e6bcace5 2021-06-22 stsp }
 890 e6bcace5 2021-06-22 stsp 
 891 e6bcace5 2021-06-22 stsp static const struct got_error *
 892 67fd6849 2022-02-13 stsp load_tree_entries(struct got_object_id_queue *ids, int want_meta,
 893 e6bcace5 2021-06-22 stsp     struct got_object_idset *idset, struct got_object_id *tree_id,
 894 e6bcace5 2021-06-22 stsp     const char *dpath, time_t mtime, struct got_repository *repo,
 895 b8af7c06 2022-03-15 stsp     int loose_obj_only, int *ncolored, int *nfound, int *ntrees,
 896 b8af7c06 2022-03-15 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
 897 b8af7c06 2022-03-15 stsp     struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
 898 e6bcace5 2021-06-22 stsp {
 899 e6bcace5 2021-06-22 stsp 	const struct got_error *err;
 900 e6bcace5 2021-06-22 stsp 	struct got_tree_object *tree;
 901 e6bcace5 2021-06-22 stsp 	char *p = NULL;
 902 e6bcace5 2021-06-22 stsp 	int i;
 903 e6bcace5 2021-06-22 stsp 
 904 e6bcace5 2021-06-22 stsp 	err = got_object_open_as_tree(&tree, repo, tree_id);
 905 b8af7c06 2022-03-15 stsp 	if (err)
 906 b8af7c06 2022-03-15 stsp 		return err;
 907 b8af7c06 2022-03-15 stsp 
 908 b8af7c06 2022-03-15 stsp 	(*ntrees)++;
 909 b8af7c06 2022-03-15 stsp 	err = report_progress(progress_cb, progress_arg, rl,
 910 b8af7c06 2022-03-15 stsp 	    *ncolored, *nfound, *ntrees, 0L, 0, 0, 0, 0);
 911 e6bcace5 2021-06-22 stsp 	if (err)
 912 e6bcace5 2021-06-22 stsp 		return err;
 913 e6bcace5 2021-06-22 stsp 
 914 e6bcace5 2021-06-22 stsp 	for (i = 0; i < got_object_tree_get_nentries(tree); i++) {
 915 e6bcace5 2021-06-22 stsp 		struct got_tree_entry *e = got_object_tree_get_entry(tree, i);
 916 e6bcace5 2021-06-22 stsp 		struct got_object_id *id = got_tree_entry_get_id(e);
 917 e6bcace5 2021-06-22 stsp 		mode_t mode = got_tree_entry_get_mode(e);
 918 e6bcace5 2021-06-22 stsp 
 919 e6bcace5 2021-06-22 stsp 		if (cancel_cb) {
 920 e6bcace5 2021-06-22 stsp 			err = (*cancel_cb)(cancel_arg);
 921 e6bcace5 2021-06-22 stsp 			if (err)
 922 e6bcace5 2021-06-22 stsp 				break;
 923 e6bcace5 2021-06-22 stsp 		}
 924 e6bcace5 2021-06-22 stsp 
 925 3af9de88 2021-09-22 stsp 		if (got_object_tree_entry_is_submodule(e) ||
 926 e6bcace5 2021-06-22 stsp 		    got_object_idset_contains(idset, id))
 927 e6bcace5 2021-06-22 stsp 			continue;
 928 e6bcace5 2021-06-22 stsp 		
 929 e6bcace5 2021-06-22 stsp 		if (asprintf(&p, "%s%s%s", dpath, dpath[0] != '\0' ? "/" : "",
 930 e6bcace5 2021-06-22 stsp 		    got_tree_entry_get_name(e)) == -1) {
 931 e6bcace5 2021-06-22 stsp 			err = got_error_from_errno("asprintf");
 932 e6bcace5 2021-06-22 stsp 			break;
 933 e6bcace5 2021-06-22 stsp 		}
 934 e6bcace5 2021-06-22 stsp 
 935 e6bcace5 2021-06-22 stsp 		if (S_ISDIR(mode)) {
 936 e6bcace5 2021-06-22 stsp 			struct got_object_qid *qid;
 937 e6bcace5 2021-06-22 stsp 			err = got_object_qid_alloc(&qid, id);
 938 e6bcace5 2021-06-22 stsp 			if (err)
 939 e6bcace5 2021-06-22 stsp 				break;
 940 dbdddfee 2021-06-23 naddy 			STAILQ_INSERT_TAIL(ids, qid, entry);
 941 3af9de88 2021-09-22 stsp 		} else if (S_ISREG(mode) || S_ISLNK(mode)) {
 942 67fd6849 2022-02-13 stsp 			err = add_object(want_meta, idset, id, p,
 943 6863cbf9 2022-03-21 stsp 			    GOT_OBJ_TYPE_BLOB, mtime, loose_obj_only, repo,
 944 6863cbf9 2022-03-21 stsp 			    ncolored, nfound, ntrees,
 945 6863cbf9 2022-03-21 stsp 			    progress_cb, progress_arg, rl);
 946 b8af7c06 2022-03-15 stsp 			if (err)
 947 b8af7c06 2022-03-15 stsp 				break;
 948 e6bcace5 2021-06-22 stsp 		}
 949 e6bcace5 2021-06-22 stsp 		free(p);
 950 e6bcace5 2021-06-22 stsp 		p = NULL;
 951 e6bcace5 2021-06-22 stsp 	}
 952 e6bcace5 2021-06-22 stsp 
 953 e6bcace5 2021-06-22 stsp 	got_object_tree_close(tree);
 954 e6bcace5 2021-06-22 stsp 	free(p);
 955 e6bcace5 2021-06-22 stsp 	return err;
 956 e6bcace5 2021-06-22 stsp }
 957 e6bcace5 2021-06-22 stsp 
 958 e6bcace5 2021-06-22 stsp static const struct got_error *
 959 67fd6849 2022-02-13 stsp load_tree(int want_meta, struct got_object_idset *idset,
 960 e6bcace5 2021-06-22 stsp     struct got_object_id *tree_id, const char *dpath, time_t mtime,
 961 b8af7c06 2022-03-15 stsp     struct got_repository *repo, int loose_obj_only,
 962 b8af7c06 2022-03-15 stsp     int *ncolored, int *nfound, int *ntrees,
 963 b8af7c06 2022-03-15 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
 964 b8af7c06 2022-03-15 stsp     struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
 965 e6bcace5 2021-06-22 stsp {
 966 e6bcace5 2021-06-22 stsp 	const struct got_error *err = NULL;
 967 e6bcace5 2021-06-22 stsp 	struct got_object_id_queue tree_ids;
 968 e6bcace5 2021-06-22 stsp 	struct got_object_qid *qid;
 969 e6bcace5 2021-06-22 stsp 
 970 e6bcace5 2021-06-22 stsp 	if (got_object_idset_contains(idset, tree_id))
 971 e6bcace5 2021-06-22 stsp 		return NULL;
 972 e6bcace5 2021-06-22 stsp 
 973 e6bcace5 2021-06-22 stsp 	err = got_object_qid_alloc(&qid, tree_id);
 974 e6bcace5 2021-06-22 stsp 	if (err)
 975 e6bcace5 2021-06-22 stsp 		return err;
 976 e6bcace5 2021-06-22 stsp 
 977 dbdddfee 2021-06-23 naddy 	STAILQ_INIT(&tree_ids);
 978 dbdddfee 2021-06-23 naddy 	STAILQ_INSERT_TAIL(&tree_ids, qid, entry);
 979 e6bcace5 2021-06-22 stsp 
 980 dbdddfee 2021-06-23 naddy 	while (!STAILQ_EMPTY(&tree_ids)) {
 981 e6bcace5 2021-06-22 stsp 		if (cancel_cb) {
 982 e6bcace5 2021-06-22 stsp 			err = (*cancel_cb)(cancel_arg);
 983 e6bcace5 2021-06-22 stsp 			if (err)
 984 e6bcace5 2021-06-22 stsp 				break;
 985 e6bcace5 2021-06-22 stsp 		}
 986 e6bcace5 2021-06-22 stsp 
 987 dbdddfee 2021-06-23 naddy 		qid = STAILQ_FIRST(&tree_ids);
 988 dbdddfee 2021-06-23 naddy 		STAILQ_REMOVE_HEAD(&tree_ids, entry);
 989 e6bcace5 2021-06-22 stsp 
 990 d7b5a0e8 2022-04-20 stsp 		if (got_object_idset_contains(idset, &qid->id)) {
 991 e6bcace5 2021-06-22 stsp 			got_object_qid_free(qid);
 992 e6bcace5 2021-06-22 stsp 			continue;
 993 e6bcace5 2021-06-22 stsp 		}
 994 e6bcace5 2021-06-22 stsp 
 995 d7b5a0e8 2022-04-20 stsp 		err = add_object(want_meta, idset, &qid->id, dpath,
 996 6863cbf9 2022-03-21 stsp 		    GOT_OBJ_TYPE_TREE, mtime, loose_obj_only, repo,
 997 6863cbf9 2022-03-21 stsp 		    ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
 998 e6bcace5 2021-06-22 stsp 		if (err) {
 999 e6bcace5 2021-06-22 stsp 			got_object_qid_free(qid);
1000 e6bcace5 2021-06-22 stsp 			break;
1001 e6bcace5 2021-06-22 stsp 		}
1002 e6bcace5 2021-06-22 stsp 
1003 d7b5a0e8 2022-04-20 stsp 		err = load_tree_entries(&tree_ids, want_meta, idset, &qid->id,
1004 b8af7c06 2022-03-15 stsp 		    dpath, mtime, repo, loose_obj_only, ncolored, nfound,
1005 b8af7c06 2022-03-15 stsp 		    ntrees, progress_cb, progress_arg, rl,
1006 b8af7c06 2022-03-15 stsp 		    cancel_cb, cancel_arg);
1007 e6bcace5 2021-06-22 stsp 		got_object_qid_free(qid);
1008 e6bcace5 2021-06-22 stsp 		if (err)
1009 e6bcace5 2021-06-22 stsp 			break;
1010 e6bcace5 2021-06-22 stsp 	}
1011 e6bcace5 2021-06-22 stsp 
1012 e6bcace5 2021-06-22 stsp 	got_object_id_queue_free(&tree_ids);
1013 e6bcace5 2021-06-22 stsp 	return err;
1014 e6bcace5 2021-06-22 stsp }
1015 e6bcace5 2021-06-22 stsp 
1016 e6bcace5 2021-06-22 stsp static const struct got_error *
1017 67fd6849 2022-02-13 stsp load_commit(int want_meta, struct got_object_idset *idset,
1018 05118f5a 2021-06-22 stsp     struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
1019 b8af7c06 2022-03-15 stsp     int *ncolored, int *nfound, int *ntrees,
1020 b8af7c06 2022-03-15 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
1021 b8af7c06 2022-03-15 stsp     struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1022 e6bcace5 2021-06-22 stsp {
1023 e6bcace5 2021-06-22 stsp 	const struct got_error *err;
1024 e6bcace5 2021-06-22 stsp 	struct got_commit_object *commit;
1025 e6bcace5 2021-06-22 stsp 
1026 e6bcace5 2021-06-22 stsp 	if (got_object_idset_contains(idset, id))
1027 e6bcace5 2021-06-22 stsp 		return NULL;
1028 05118f5a 2021-06-22 stsp 
1029 05118f5a 2021-06-22 stsp 	if (loose_obj_only) {
1030 05118f5a 2021-06-22 stsp 		int is_packed;
1031 05118f5a 2021-06-22 stsp 		err = search_packidx(&is_packed, id, repo);
1032 05118f5a 2021-06-22 stsp 		if (err)
1033 05118f5a 2021-06-22 stsp 			return err;
1034 cdeb891a 2022-03-21 stsp 		if (is_packed && want_meta)
1035 05118f5a 2021-06-22 stsp 			return NULL;
1036 05118f5a 2021-06-22 stsp 	}
1037 e6bcace5 2021-06-22 stsp 
1038 e6bcace5 2021-06-22 stsp 	err = got_object_open_as_commit(&commit, repo, id);
1039 e6bcace5 2021-06-22 stsp 	if (err)
1040 e6bcace5 2021-06-22 stsp 		return err;
1041 e6bcace5 2021-06-22 stsp 
1042 67fd6849 2022-02-13 stsp 	err = add_object(want_meta, idset, id, "", GOT_OBJ_TYPE_COMMIT,
1043 05118f5a 2021-06-22 stsp 	    got_object_commit_get_committer_time(commit),
1044 6863cbf9 2022-03-21 stsp 	    loose_obj_only, repo,
1045 6863cbf9 2022-03-21 stsp 	    ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1046 e6bcace5 2021-06-22 stsp 	if (err)
1047 e6bcace5 2021-06-22 stsp 		goto done;
1048 b8af7c06 2022-03-15 stsp 
1049 67fd6849 2022-02-13 stsp 	err = load_tree(want_meta, idset, got_object_commit_get_tree_id(commit),
1050 05118f5a 2021-06-22 stsp 	    "", got_object_commit_get_committer_time(commit),
1051 b8af7c06 2022-03-15 stsp 	    repo, loose_obj_only, ncolored, nfound, ntrees,
1052 b8af7c06 2022-03-15 stsp 	    progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1053 e6bcace5 2021-06-22 stsp done:
1054 e6bcace5 2021-06-22 stsp 	got_object_commit_close(commit);
1055 e6bcace5 2021-06-22 stsp 	return err;
1056 e6bcace5 2021-06-22 stsp }
1057 e6bcace5 2021-06-22 stsp 
1058 05118f5a 2021-06-22 stsp static const struct got_error *
1059 67fd6849 2022-02-13 stsp load_tag(int want_meta, struct got_object_idset *idset,
1060 05118f5a 2021-06-22 stsp     struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
1061 b8af7c06 2022-03-15 stsp     int *ncolored, int *nfound, int *ntrees,
1062 b8af7c06 2022-03-15 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
1063 b8af7c06 2022-03-15 stsp     struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1064 05118f5a 2021-06-22 stsp {
1065 05118f5a 2021-06-22 stsp 	const struct got_error *err;
1066 05118f5a 2021-06-22 stsp 	struct got_tag_object *tag = NULL;
1067 05118f5a 2021-06-22 stsp 
1068 05118f5a 2021-06-22 stsp 	if (got_object_idset_contains(idset, id))
1069 05118f5a 2021-06-22 stsp 		return NULL;
1070 05118f5a 2021-06-22 stsp 
1071 05118f5a 2021-06-22 stsp 	if (loose_obj_only) {
1072 05118f5a 2021-06-22 stsp 		int is_packed;
1073 05118f5a 2021-06-22 stsp 		err = search_packidx(&is_packed, id, repo);
1074 05118f5a 2021-06-22 stsp 		if (err)
1075 05118f5a 2021-06-22 stsp 			return err;
1076 cdeb891a 2022-03-21 stsp 		if (is_packed && want_meta)
1077 05118f5a 2021-06-22 stsp 			return NULL;
1078 05118f5a 2021-06-22 stsp 	}
1079 05118f5a 2021-06-22 stsp 
1080 05118f5a 2021-06-22 stsp 	err = got_object_open_as_tag(&tag, repo, id);
1081 05118f5a 2021-06-22 stsp 	if (err)
1082 05118f5a 2021-06-22 stsp 		return err;
1083 05118f5a 2021-06-22 stsp 
1084 67fd6849 2022-02-13 stsp 	err = add_object(want_meta, idset, id, "", GOT_OBJ_TYPE_TAG,
1085 6863cbf9 2022-03-21 stsp 	    got_object_tag_get_tagger_time(tag), loose_obj_only, repo,
1086 6863cbf9 2022-03-21 stsp 	    ncolored, nfound, ntrees, progress_cb, progress_arg, rl);
1087 05118f5a 2021-06-22 stsp 	if (err)
1088 05118f5a 2021-06-22 stsp 		goto done;
1089 05118f5a 2021-06-22 stsp 
1090 05118f5a 2021-06-22 stsp 	switch (got_object_tag_get_object_type(tag)) {
1091 05118f5a 2021-06-22 stsp 	case GOT_OBJ_TYPE_COMMIT:
1092 67fd6849 2022-02-13 stsp 		err = load_commit(want_meta, idset,
1093 b8af7c06 2022-03-15 stsp 		    got_object_tag_get_object_id(tag), repo, loose_obj_only,
1094 b8af7c06 2022-03-15 stsp 		    ncolored, nfound, ntrees, progress_cb, progress_arg, rl,
1095 b8af7c06 2022-03-15 stsp 		    cancel_cb, cancel_arg);
1096 05118f5a 2021-06-22 stsp 		break;
1097 05118f5a 2021-06-22 stsp 	case GOT_OBJ_TYPE_TREE:
1098 67fd6849 2022-02-13 stsp 		err = load_tree(want_meta, idset,
1099 67fd6849 2022-02-13 stsp 		    got_object_tag_get_object_id(tag), "",
1100 b8af7c06 2022-03-15 stsp 		    got_object_tag_get_tagger_time(tag), repo, loose_obj_only,
1101 b8af7c06 2022-03-15 stsp 		    ncolored, nfound, ntrees, progress_cb, progress_arg, rl,
1102 b8af7c06 2022-03-15 stsp 		    cancel_cb, cancel_arg);
1103 05118f5a 2021-06-22 stsp 		break;
1104 05118f5a 2021-06-22 stsp 	default:
1105 05118f5a 2021-06-22 stsp 		break;
1106 05118f5a 2021-06-22 stsp 	}
1107 05118f5a 2021-06-22 stsp 
1108 05118f5a 2021-06-22 stsp done:
1109 05118f5a 2021-06-22 stsp 	got_object_tag_close(tag);
1110 05118f5a 2021-06-22 stsp 	return err;
1111 05118f5a 2021-06-22 stsp }
1112 05118f5a 2021-06-22 stsp 
1113 e6bcace5 2021-06-22 stsp enum findtwixt_color {
1114 e6bcace5 2021-06-22 stsp 	COLOR_KEEP = 0,
1115 e6bcace5 2021-06-22 stsp 	COLOR_DROP,
1116 e6bcace5 2021-06-22 stsp 	COLOR_BLANK,
1117 70f8f24d 2022-04-14 stsp 	COLOR_SKIP,
1118 e6bcace5 2021-06-22 stsp };
1119 70f8f24d 2022-04-14 stsp 
1120 e6bcace5 2021-06-22 stsp static const int findtwixt_colors[] = {
1121 e6bcace5 2021-06-22 stsp 	COLOR_KEEP,
1122 e6bcace5 2021-06-22 stsp 	COLOR_DROP,
1123 70f8f24d 2022-04-14 stsp 	COLOR_BLANK,
1124 70f8f24d 2022-04-14 stsp 	COLOR_SKIP,
1125 e6bcace5 2021-06-22 stsp };
1126 e6bcace5 2021-06-22 stsp 
1127 e6bcace5 2021-06-22 stsp static const struct got_error *
1128 70f8f24d 2022-04-14 stsp paint_commit(struct got_object_qid *qid, int color)
1129 e6bcace5 2021-06-22 stsp {
1130 70f8f24d 2022-04-14 stsp 	if (color < 0 || color >= nitems(findtwixt_colors))
1131 70f8f24d 2022-04-14 stsp 		return got_error(GOT_ERR_RANGE);
1132 e6bcace5 2021-06-22 stsp 
1133 e6bcace5 2021-06-22 stsp 	qid->data = (void *)&findtwixt_colors[color];
1134 e6bcace5 2021-06-22 stsp 	return NULL;
1135 e6bcace5 2021-06-22 stsp }
1136 e6bcace5 2021-06-22 stsp 
1137 e6bcace5 2021-06-22 stsp static const struct got_error *
1138 70f8f24d 2022-04-14 stsp queue_commit_id(struct got_object_id_queue *ids, struct got_object_id *id,
1139 70f8f24d 2022-04-14 stsp     int color, struct got_repository *repo)
1140 e6bcace5 2021-06-22 stsp {
1141 70f8f24d 2022-04-14 stsp 	const struct got_error *err;
1142 e6bcace5 2021-06-22 stsp 	struct got_object_qid *qid;
1143 e6bcace5 2021-06-22 stsp 
1144 e6bcace5 2021-06-22 stsp 	err = got_object_qid_alloc(&qid, id);
1145 e6bcace5 2021-06-22 stsp 	if (err)
1146 e6bcace5 2021-06-22 stsp 		return err;
1147 e6bcace5 2021-06-22 stsp 
1148 70f8f24d 2022-04-14 stsp 	STAILQ_INSERT_TAIL(ids, qid, entry);
1149 70f8f24d 2022-04-14 stsp 	return paint_commit(qid, color);
1150 e6bcace5 2021-06-22 stsp }
1151 e6bcace5 2021-06-22 stsp 
1152 e6bcace5 2021-06-22 stsp struct append_id_arg {
1153 e6bcace5 2021-06-22 stsp 	struct got_object_id **array;
1154 e6bcace5 2021-06-22 stsp 	int idx;
1155 70f8f24d 2022-04-14 stsp 	struct got_object_idset *drop;
1156 70f8f24d 2022-04-14 stsp 	struct got_object_idset *skip;
1157 e6bcace5 2021-06-22 stsp };
1158 e6bcace5 2021-06-22 stsp 
1159 e6bcace5 2021-06-22 stsp static const struct got_error *
1160 e6bcace5 2021-06-22 stsp append_id(struct got_object_id *id, void *data, void *arg)
1161 e6bcace5 2021-06-22 stsp {
1162 e6bcace5 2021-06-22 stsp 	struct append_id_arg *a = arg;
1163 e6bcace5 2021-06-22 stsp 
1164 70f8f24d 2022-04-14 stsp 	if (got_object_idset_contains(a->skip, id) ||
1165 70f8f24d 2022-04-14 stsp 	    got_object_idset_contains(a->drop, id))
1166 70f8f24d 2022-04-14 stsp 		return NULL;
1167 70f8f24d 2022-04-14 stsp 
1168 70f8f24d 2022-04-14 stsp 	a->array[++a->idx] = got_object_id_dup(id);
1169 e6bcace5 2021-06-22 stsp 	if (a->array[a->idx] == NULL)
1170 e6bcace5 2021-06-22 stsp 		return got_error_from_errno("got_object_id_dup");
1171 e6bcace5 2021-06-22 stsp 
1172 e6bcace5 2021-06-22 stsp 	return NULL;
1173 29e0594f 2022-04-09 stsp }
1174 29e0594f 2022-04-09 stsp 
1175 29e0594f 2022-04-09 stsp static const struct got_error *
1176 29e0594f 2022-04-09 stsp queue_commit_or_tag_id(struct got_object_id *id, int color,
1177 29e0594f 2022-04-09 stsp     struct got_object_id_queue *ids, struct got_repository *repo)
1178 29e0594f 2022-04-09 stsp {
1179 29e0594f 2022-04-09 stsp 	const struct got_error *err;
1180 29e0594f 2022-04-09 stsp 	struct got_tag_object *tag = NULL;
1181 29e0594f 2022-04-09 stsp 	int obj_type;
1182 29e0594f 2022-04-09 stsp 
1183 29e0594f 2022-04-09 stsp 	err = got_object_get_type(&obj_type, repo, id);
1184 29e0594f 2022-04-09 stsp 	if (err)
1185 29e0594f 2022-04-09 stsp 		return err;
1186 29e0594f 2022-04-09 stsp 
1187 29e0594f 2022-04-09 stsp 	if (obj_type == GOT_OBJ_TYPE_TAG) {
1188 29e0594f 2022-04-09 stsp 		err = got_object_open_as_tag(&tag, repo, id);
1189 29e0594f 2022-04-09 stsp 		if (err)
1190 29e0594f 2022-04-09 stsp 			return err;
1191 29e0594f 2022-04-09 stsp 		obj_type = got_object_tag_get_object_type(tag);
1192 29e0594f 2022-04-09 stsp 		id = got_object_tag_get_object_id(tag);
1193 29e0594f 2022-04-09 stsp 	}
1194 29e0594f 2022-04-09 stsp 
1195 29e0594f 2022-04-09 stsp 	if (obj_type == GOT_OBJ_TYPE_COMMIT) {
1196 29e0594f 2022-04-09 stsp 		err = queue_commit_id(ids, id, color, repo);
1197 29e0594f 2022-04-09 stsp 		if (err)
1198 29e0594f 2022-04-09 stsp 			goto done;
1199 29e0594f 2022-04-09 stsp 	}
1200 29e0594f 2022-04-09 stsp done:
1201 29e0594f 2022-04-09 stsp 	if (tag)
1202 29e0594f 2022-04-09 stsp 		got_object_tag_close(tag);
1203 29e0594f 2022-04-09 stsp 	return err;
1204 e6bcace5 2021-06-22 stsp }
1205 e6bcace5 2021-06-22 stsp 
1206 e6bcace5 2021-06-22 stsp static const struct got_error *
1207 70f8f24d 2022-04-14 stsp paint_commits(int *ncolored, struct got_object_id_queue *ids, int nids,
1208 14dbbf48 2022-04-10 stsp     struct got_object_idset *keep, struct got_object_idset *drop,
1209 70f8f24d 2022-04-14 stsp     struct got_object_idset *skip, struct got_repository *repo,
1210 b8af7c06 2022-03-15 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
1211 b8af7c06 2022-03-15 stsp     struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1212 e6bcace5 2021-06-22 stsp {
1213 e6bcace5 2021-06-22 stsp 	const struct got_error *err = NULL;
1214 14dbbf48 2022-04-10 stsp 	struct got_commit_object *commit = NULL;
1215 70f8f24d 2022-04-14 stsp 	const struct got_object_id_queue *parents;
1216 e6bcace5 2021-06-22 stsp 	struct got_object_qid *qid;
1217 70f8f24d 2022-04-14 stsp 	int nqueued = nids, nskip = 0;
1218 e6bcace5 2021-06-22 stsp 
1219 70f8f24d 2022-04-14 stsp 	while (!STAILQ_EMPTY(ids) && nskip != nqueued) {
1220 70f8f24d 2022-04-14 stsp 		int color;
1221 03c03172 2022-04-10 stsp 
1222 57bc7b6d 2022-04-10 stsp 		if (cancel_cb) {
1223 57bc7b6d 2022-04-10 stsp 			err = cancel_cb(cancel_arg);
1224 57bc7b6d 2022-04-10 stsp 			if (err)
1225 14dbbf48 2022-04-10 stsp 				break;
1226 57bc7b6d 2022-04-10 stsp 		}
1227 57bc7b6d 2022-04-10 stsp 
1228 14dbbf48 2022-04-10 stsp 		qid = STAILQ_FIRST(ids);
1229 70f8f24d 2022-04-14 stsp 		STAILQ_REMOVE_HEAD(ids, entry);
1230 70f8f24d 2022-04-14 stsp 		nqueued--;
1231 70f8f24d 2022-04-14 stsp 		color = *((int *)qid->data);
1232 70f8f24d 2022-04-14 stsp 		if (color == COLOR_SKIP)
1233 70f8f24d 2022-04-14 stsp 			nskip--;
1234 e6bcace5 2021-06-22 stsp 
1235 d7b5a0e8 2022-04-20 stsp 		if (got_object_idset_contains(skip, &qid->id)) {
1236 70f8f24d 2022-04-14 stsp 			got_object_qid_free(qid);
1237 70f8f24d 2022-04-14 stsp 			continue;
1238 70f8f24d 2022-04-14 stsp 		}
1239 b8af7c06 2022-03-15 stsp 
1240 70f8f24d 2022-04-14 stsp 		switch (color) {
1241 70f8f24d 2022-04-14 stsp 		case COLOR_KEEP:
1242 d7b5a0e8 2022-04-20 stsp 			if (got_object_idset_contains(keep, &qid->id)) {
1243 70f8f24d 2022-04-14 stsp 				got_object_qid_free(qid);
1244 70f8f24d 2022-04-14 stsp 				continue;
1245 70f8f24d 2022-04-14 stsp 			}
1246 d7b5a0e8 2022-04-20 stsp 			if (got_object_idset_contains(drop, &qid->id)) {
1247 70f8f24d 2022-04-14 stsp 				err = paint_commit(qid, COLOR_SKIP);
1248 70f8f24d 2022-04-14 stsp 				if (err)
1249 70f8f24d 2022-04-14 stsp 					goto done;
1250 70f8f24d 2022-04-14 stsp 				nskip++;
1251 70f8f24d 2022-04-14 stsp 			} else
1252 70f8f24d 2022-04-14 stsp 				(*ncolored)++;
1253 d7b5a0e8 2022-04-20 stsp 			err = got_object_idset_add(keep, &qid->id, NULL);
1254 70f8f24d 2022-04-14 stsp 			if (err)
1255 70f8f24d 2022-04-14 stsp 				goto done;
1256 70f8f24d 2022-04-14 stsp 			break;
1257 70f8f24d 2022-04-14 stsp 		case COLOR_DROP:
1258 d7b5a0e8 2022-04-20 stsp 			if (got_object_idset_contains(drop, &qid->id)) {
1259 70f8f24d 2022-04-14 stsp 				got_object_qid_free(qid);
1260 70f8f24d 2022-04-14 stsp 				continue;
1261 70f8f24d 2022-04-14 stsp 			}
1262 d7b5a0e8 2022-04-20 stsp 			if (got_object_idset_contains(keep, &qid->id)) {
1263 70f8f24d 2022-04-14 stsp 				err = paint_commit(qid, COLOR_SKIP);
1264 70f8f24d 2022-04-14 stsp 				if (err)
1265 70f8f24d 2022-04-14 stsp 					goto done;
1266 70f8f24d 2022-04-14 stsp 				nskip++;
1267 70f8f24d 2022-04-14 stsp 			} else
1268 70f8f24d 2022-04-14 stsp 				(*ncolored)++;
1269 d7b5a0e8 2022-04-20 stsp 			err = got_object_idset_add(drop, &qid->id, NULL);
1270 70f8f24d 2022-04-14 stsp 			if (err)
1271 70f8f24d 2022-04-14 stsp 				goto done;
1272 70f8f24d 2022-04-14 stsp 			break;
1273 70f8f24d 2022-04-14 stsp 		case COLOR_SKIP:
1274 d7b5a0e8 2022-04-20 stsp 			if (!got_object_idset_contains(skip, &qid->id)) {
1275 d7b5a0e8 2022-04-20 stsp 				err = got_object_idset_add(skip, &qid->id,
1276 d7b5a0e8 2022-04-20 stsp 				    NULL);
1277 70f8f24d 2022-04-14 stsp 				if (err)
1278 70f8f24d 2022-04-14 stsp 					goto done;
1279 70f8f24d 2022-04-14 stsp 			}
1280 70f8f24d 2022-04-14 stsp 			break;
1281 70f8f24d 2022-04-14 stsp 		default:
1282 70f8f24d 2022-04-14 stsp 			/* should not happen */
1283 70f8f24d 2022-04-14 stsp 			err = got_error_fmt(GOT_ERR_NOT_IMPL,
1284 70f8f24d 2022-04-14 stsp 			    "%s invalid commit color %d", __func__, color);
1285 70f8f24d 2022-04-14 stsp 			goto done;
1286 70f8f24d 2022-04-14 stsp 		}
1287 70f8f24d 2022-04-14 stsp 
1288 b8af7c06 2022-03-15 stsp 		err = report_progress(progress_cb, progress_arg, rl,
1289 b8af7c06 2022-03-15 stsp 		    *ncolored, 0, 0, 0L, 0, 0, 0, 0);
1290 b8af7c06 2022-03-15 stsp 		if (err)
1291 14dbbf48 2022-04-10 stsp 			break;
1292 e6bcace5 2021-06-22 stsp 
1293 e6bcace5 2021-06-22 stsp 
1294 d7b5a0e8 2022-04-20 stsp 		err = got_object_open_as_commit(&commit, repo, &qid->id);
1295 70f8f24d 2022-04-14 stsp 		if (err)
1296 70f8f24d 2022-04-14 stsp 			break;
1297 e6bcace5 2021-06-22 stsp 
1298 70f8f24d 2022-04-14 stsp 		parents = got_object_commit_get_parent_ids(commit);
1299 70f8f24d 2022-04-14 stsp 		if (parents) {
1300 70f8f24d 2022-04-14 stsp 			struct got_object_qid *pid;
1301 70f8f24d 2022-04-14 stsp 			color = *((int *)qid->data);
1302 70f8f24d 2022-04-14 stsp 			STAILQ_FOREACH(pid, parents, entry) {
1303 d7b5a0e8 2022-04-20 stsp 				err = queue_commit_id(ids, &pid->id, color,
1304 70f8f24d 2022-04-14 stsp 				    repo);
1305 70f8f24d 2022-04-14 stsp 				if (err)
1306 70f8f24d 2022-04-14 stsp 					break;
1307 70f8f24d 2022-04-14 stsp 				nqueued++;
1308 70f8f24d 2022-04-14 stsp 				if (color == COLOR_SKIP)
1309 70f8f24d 2022-04-14 stsp 					nskip++;
1310 e6bcace5 2021-06-22 stsp 			}
1311 e6bcace5 2021-06-22 stsp 		}
1312 e6bcace5 2021-06-22 stsp 
1313 70f8f24d 2022-04-14 stsp 		got_object_commit_close(commit);
1314 70f8f24d 2022-04-14 stsp 		commit = NULL;
1315 e6bcace5 2021-06-22 stsp 		got_object_qid_free(qid);
1316 e6bcace5 2021-06-22 stsp 	}
1317 70f8f24d 2022-04-14 stsp done:
1318 14dbbf48 2022-04-10 stsp 	if (commit)
1319 14dbbf48 2022-04-10 stsp 		got_object_commit_close(commit);
1320 14dbbf48 2022-04-10 stsp 	return err;
1321 14dbbf48 2022-04-10 stsp }
1322 14dbbf48 2022-04-10 stsp 
1323 14dbbf48 2022-04-10 stsp static const struct got_error *
1324 14dbbf48 2022-04-10 stsp findtwixt(struct got_object_id ***res, int *nres, int *ncolored,
1325 14dbbf48 2022-04-10 stsp     struct got_object_id **head, int nhead,
1326 14dbbf48 2022-04-10 stsp     struct got_object_id **tail, int ntail,
1327 14dbbf48 2022-04-10 stsp     struct got_repository *repo,
1328 14dbbf48 2022-04-10 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
1329 14dbbf48 2022-04-10 stsp     struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1330 14dbbf48 2022-04-10 stsp {
1331 14dbbf48 2022-04-10 stsp 	const struct got_error *err = NULL;
1332 14dbbf48 2022-04-10 stsp 	struct got_object_id_queue ids;
1333 70f8f24d 2022-04-14 stsp 	struct got_object_idset *keep, *drop, *skip = NULL;
1334 14dbbf48 2022-04-10 stsp 	int i, nkeep;
1335 14dbbf48 2022-04-10 stsp 
1336 14dbbf48 2022-04-10 stsp 	STAILQ_INIT(&ids);
1337 14dbbf48 2022-04-10 stsp 	*res = NULL;
1338 14dbbf48 2022-04-10 stsp 	*nres = 0;
1339 14dbbf48 2022-04-10 stsp 	*ncolored = 0;
1340 14dbbf48 2022-04-10 stsp 
1341 14dbbf48 2022-04-10 stsp 	keep = got_object_idset_alloc();
1342 14dbbf48 2022-04-10 stsp 	if (keep == NULL)
1343 14dbbf48 2022-04-10 stsp 		return got_error_from_errno("got_object_idset_alloc");
1344 14dbbf48 2022-04-10 stsp 
1345 14dbbf48 2022-04-10 stsp 	drop = got_object_idset_alloc();
1346 14dbbf48 2022-04-10 stsp 	if (drop == NULL) {
1347 14dbbf48 2022-04-10 stsp 		err = got_error_from_errno("got_object_idset_alloc");
1348 14dbbf48 2022-04-10 stsp 		goto done;
1349 14dbbf48 2022-04-10 stsp 	}
1350 14dbbf48 2022-04-10 stsp 
1351 70f8f24d 2022-04-14 stsp 	skip = got_object_idset_alloc();
1352 70f8f24d 2022-04-14 stsp 	if (skip == NULL) {
1353 70f8f24d 2022-04-14 stsp 		err = got_error_from_errno("got_object_idset_alloc");
1354 70f8f24d 2022-04-14 stsp 		goto done;
1355 70f8f24d 2022-04-14 stsp 	}
1356 70f8f24d 2022-04-14 stsp 
1357 14dbbf48 2022-04-10 stsp 	for (i = 0; i < nhead; i++) {
1358 14dbbf48 2022-04-10 stsp 		struct got_object_id *id = head[i];
1359 14dbbf48 2022-04-10 stsp 		if (id == NULL)
1360 14dbbf48 2022-04-10 stsp 			continue;
1361 fbafdecf 2022-04-10 stsp 		err = queue_commit_or_tag_id(id, COLOR_KEEP, &ids, repo);
1362 14dbbf48 2022-04-10 stsp 		if (err)
1363 14dbbf48 2022-04-10 stsp 			goto done;
1364 14dbbf48 2022-04-10 stsp 	}		
1365 14dbbf48 2022-04-10 stsp 
1366 14dbbf48 2022-04-10 stsp 	for (i = 0; i < ntail; i++) {
1367 14dbbf48 2022-04-10 stsp 		struct got_object_id *id = tail[i];
1368 14dbbf48 2022-04-10 stsp 		if (id == NULL)
1369 14dbbf48 2022-04-10 stsp 			continue;
1370 14dbbf48 2022-04-10 stsp 		err = queue_commit_or_tag_id(id, COLOR_DROP, &ids, repo);
1371 14dbbf48 2022-04-10 stsp 		if (err)
1372 14dbbf48 2022-04-10 stsp 			goto done;
1373 14dbbf48 2022-04-10 stsp 	}
1374 14dbbf48 2022-04-10 stsp 
1375 70f8f24d 2022-04-14 stsp 	err = paint_commits(ncolored, &ids, nhead + ntail,
1376 70f8f24d 2022-04-14 stsp 	    keep, drop, skip, repo, progress_cb, progress_arg, rl,
1377 70f8f24d 2022-04-14 stsp 	    cancel_cb, cancel_arg);
1378 14dbbf48 2022-04-10 stsp 	if (err)
1379 14dbbf48 2022-04-10 stsp 		goto done;
1380 14dbbf48 2022-04-10 stsp 
1381 e6bcace5 2021-06-22 stsp 	nkeep = got_object_idset_num_elements(keep);
1382 e6bcace5 2021-06-22 stsp 	if (nkeep > 0) {
1383 e6bcace5 2021-06-22 stsp 		struct append_id_arg arg;
1384 e6bcace5 2021-06-22 stsp 		arg.array = calloc(nkeep, sizeof(struct got_object_id *));
1385 e6bcace5 2021-06-22 stsp 		if (arg.array == NULL) {
1386 e6bcace5 2021-06-22 stsp 			err = got_error_from_errno("calloc");
1387 e6bcace5 2021-06-22 stsp 			goto done;
1388 e6bcace5 2021-06-22 stsp 		}
1389 70f8f24d 2022-04-14 stsp 		arg.idx = -1;
1390 70f8f24d 2022-04-14 stsp 		arg.skip = skip;
1391 70f8f24d 2022-04-14 stsp 		arg.drop = drop;
1392 e6bcace5 2021-06-22 stsp 		err = got_object_idset_for_each(keep, append_id, &arg);
1393 e6bcace5 2021-06-22 stsp 		if (err) {
1394 e6bcace5 2021-06-22 stsp 			free(arg.array);
1395 e6bcace5 2021-06-22 stsp 			goto done;
1396 e6bcace5 2021-06-22 stsp 		}
1397 e6bcace5 2021-06-22 stsp 		*res = arg.array;
1398 70f8f24d 2022-04-14 stsp 		*nres = arg.idx + 1;
1399 e6bcace5 2021-06-22 stsp 	}
1400 e6bcace5 2021-06-22 stsp done:
1401 e6bcace5 2021-06-22 stsp 	got_object_idset_free(keep);
1402 e6bcace5 2021-06-22 stsp 	got_object_idset_free(drop);
1403 70f8f24d 2022-04-14 stsp 	if (skip)
1404 70f8f24d 2022-04-14 stsp 		got_object_idset_free(skip);
1405 e6bcace5 2021-06-22 stsp 	got_object_id_queue_free(&ids);
1406 e6bcace5 2021-06-22 stsp 	return err;
1407 e6bcace5 2021-06-22 stsp }
1408 e6bcace5 2021-06-22 stsp 
1409 e6bcace5 2021-06-22 stsp static const struct got_error *
1410 b8af7c06 2022-03-15 stsp load_object_ids(int *ncolored, int *nfound, int *ntrees,
1411 b8af7c06 2022-03-15 stsp     struct got_object_idset *idset, struct got_object_id **theirs, int ntheirs,
1412 e6bcace5 2021-06-22 stsp     struct got_object_id **ours, int nours, struct got_repository *repo,
1413 b8af7c06 2022-03-15 stsp     int loose_obj_only, got_pack_progress_cb progress_cb, void *progress_arg,
1414 b8af7c06 2022-03-15 stsp     struct got_ratelimit *rl, got_cancel_cb cancel_cb, void *cancel_arg)
1415 e6bcace5 2021-06-22 stsp {
1416 e6bcace5 2021-06-22 stsp 	const struct got_error *err = NULL;
1417 e6bcace5 2021-06-22 stsp 	struct got_object_id **ids = NULL;
1418 05118f5a 2021-06-22 stsp 	int i, nobj = 0, obj_type;
1419 e6bcace5 2021-06-22 stsp 
1420 b8af7c06 2022-03-15 stsp 	*ncolored = 0;
1421 b8af7c06 2022-03-15 stsp 	*nfound = 0;
1422 b8af7c06 2022-03-15 stsp 	*ntrees = 0;
1423 b8af7c06 2022-03-15 stsp 
1424 b8af7c06 2022-03-15 stsp 	err = findtwixt(&ids, &nobj, ncolored, ours, nours, theirs, ntheirs,
1425 b8af7c06 2022-03-15 stsp 	    repo, progress_cb, progress_arg, rl, cancel_cb, cancel_arg);
1426 e6bcace5 2021-06-22 stsp 	if (err || nobj == 0)
1427 e6bcace5 2021-06-22 stsp 		goto done;
1428 e6bcace5 2021-06-22 stsp 
1429 e6bcace5 2021-06-22 stsp 	for (i = 0; i < ntheirs; i++) {
1430 05118f5a 2021-06-22 stsp 		struct got_object_id *id = theirs[i];
1431 05118f5a 2021-06-22 stsp 		if (id == NULL)
1432 05118f5a 2021-06-22 stsp 			continue;
1433 05118f5a 2021-06-22 stsp 		err = got_object_get_type(&obj_type, repo, id);
1434 05118f5a 2021-06-22 stsp 		if (err)
1435 05118f5a 2021-06-22 stsp 			return err;
1436 9d34261e 2022-04-07 stsp 		if (obj_type == GOT_OBJ_TYPE_COMMIT) {
1437 9d34261e 2022-04-07 stsp 			err = load_commit(0, idset, id, repo,
1438 9d34261e 2022-04-07 stsp 			    loose_obj_only, ncolored, nfound, ntrees,
1439 9d34261e 2022-04-07 stsp 			    progress_cb, progress_arg, rl,
1440 9d34261e 2022-04-07 stsp 			    cancel_cb, cancel_arg);
1441 07165b17 2021-07-01 stsp 			if (err)
1442 07165b17 2021-07-01 stsp 				goto done;
1443 9d34261e 2022-04-07 stsp 		} else if (obj_type == GOT_OBJ_TYPE_TAG) {
1444 9d34261e 2022-04-07 stsp 			err = load_tag(0, idset, id, repo,
1445 9d34261e 2022-04-07 stsp 			    loose_obj_only, ncolored, nfound, ntrees,
1446 9d34261e 2022-04-07 stsp 			    progress_cb, progress_arg, rl,
1447 9d34261e 2022-04-07 stsp 			    cancel_cb, cancel_arg);
1448 9d34261e 2022-04-07 stsp 			if (err)
1449 9d34261e 2022-04-07 stsp 				goto done;
1450 9d34261e 2022-04-07 stsp 		}
1451 05118f5a 2021-06-22 stsp 	}
1452 05118f5a 2021-06-22 stsp 
1453 eca70f98 2021-09-03 stsp 	for (i = 0; i < nobj; i++) {
1454 b8af7c06 2022-03-15 stsp 		err = load_commit(1, idset, ids[i], repo, loose_obj_only,
1455 b8af7c06 2022-03-15 stsp 		    ncolored, nfound, ntrees, progress_cb, progress_arg, rl,
1456 b8af7c06 2022-03-15 stsp 		    cancel_cb, cancel_arg);
1457 eca70f98 2021-09-03 stsp 		if (err)
1458 eca70f98 2021-09-03 stsp 			goto done;
1459 eca70f98 2021-09-03 stsp 	}
1460 eca70f98 2021-09-03 stsp 
1461 05118f5a 2021-06-22 stsp 	for (i = 0; i < nours; i++) {
1462 05118f5a 2021-06-22 stsp 		struct got_object_id *id = ours[i];
1463 67fd6849 2022-02-13 stsp 		struct got_pack_meta *m;
1464 05118f5a 2021-06-22 stsp 		if (id == NULL)
1465 05118f5a 2021-06-22 stsp 			continue;
1466 67fd6849 2022-02-13 stsp 		m = got_object_idset_get(idset, id);
1467 67fd6849 2022-02-13 stsp 		if (m == NULL) {
1468 07165b17 2021-07-01 stsp 			err = got_object_get_type(&obj_type, repo, id);
1469 07165b17 2021-07-01 stsp 			if (err)
1470 07165b17 2021-07-01 stsp 				goto done;
1471 07165b17 2021-07-01 stsp 		} else
1472 67fd6849 2022-02-13 stsp 			obj_type = m->obj_type;
1473 05118f5a 2021-06-22 stsp 		if (obj_type != GOT_OBJ_TYPE_TAG)
1474 05118f5a 2021-06-22 stsp 			continue;
1475 b8af7c06 2022-03-15 stsp 		err = load_tag(1, idset, id, repo, loose_obj_only,
1476 b8af7c06 2022-03-15 stsp 		    ncolored, nfound, ntrees, progress_cb, progress_arg, rl,
1477 b8af7c06 2022-03-15 stsp 		    cancel_cb, cancel_arg);
1478 05118f5a 2021-06-22 stsp 		if (err)
1479 e6bcace5 2021-06-22 stsp 			goto done;
1480 e6bcace5 2021-06-22 stsp 	}
1481 e6bcace5 2021-06-22 stsp done:
1482 e6bcace5 2021-06-22 stsp 	for (i = 0; i < nobj; i++) {
1483 e6bcace5 2021-06-22 stsp 		free(ids[i]);
1484 e6bcace5 2021-06-22 stsp 	}
1485 e6bcace5 2021-06-22 stsp 	free(ids);
1486 e6bcace5 2021-06-22 stsp 	return err;
1487 e6bcace5 2021-06-22 stsp }
1488 e6bcace5 2021-06-22 stsp 
1489 e6bcace5 2021-06-22 stsp const struct got_error *
1490 e6bcace5 2021-06-22 stsp hwrite(FILE *f, void *buf, int len, SHA1_CTX *ctx)
1491 e6bcace5 2021-06-22 stsp {
1492 e6bcace5 2021-06-22 stsp 	size_t n;
1493 e6bcace5 2021-06-22 stsp 
1494 e6bcace5 2021-06-22 stsp 	SHA1Update(ctx, buf, len);
1495 e6bcace5 2021-06-22 stsp 	n = fwrite(buf, 1, len, f);
1496 e6bcace5 2021-06-22 stsp 	if (n != len)
1497 e6bcace5 2021-06-22 stsp 		return got_ferror(f, GOT_ERR_IO);
1498 e6bcace5 2021-06-22 stsp 	return NULL;
1499 e6bcace5 2021-06-22 stsp }
1500 e6bcace5 2021-06-22 stsp 
1501 e6bcace5 2021-06-22 stsp static void
1502 e6bcace5 2021-06-22 stsp putbe32(char *b, uint32_t n)
1503 e6bcace5 2021-06-22 stsp {
1504 e6bcace5 2021-06-22 stsp 	b[0] = n >> 24;
1505 e6bcace5 2021-06-22 stsp 	b[1] = n >> 16;
1506 e6bcace5 2021-06-22 stsp 	b[2] = n >> 8;
1507 e6bcace5 2021-06-22 stsp 	b[3] = n >> 0;
1508 e6bcace5 2021-06-22 stsp }
1509 e6bcace5 2021-06-22 stsp 
1510 e6bcace5 2021-06-22 stsp static int
1511 e6bcace5 2021-06-22 stsp write_order_cmp(const void *pa, const void *pb)
1512 e6bcace5 2021-06-22 stsp {
1513 e6bcace5 2021-06-22 stsp 	struct got_pack_meta *a, *b, *ahd, *bhd;
1514 e6bcace5 2021-06-22 stsp 
1515 e6bcace5 2021-06-22 stsp 	a = *(struct got_pack_meta **)pa;
1516 e6bcace5 2021-06-22 stsp 	b = *(struct got_pack_meta **)pb;
1517 e6bcace5 2021-06-22 stsp 	ahd = (a->head == NULL) ? a : a->head;
1518 e6bcace5 2021-06-22 stsp 	bhd = (b->head == NULL) ? b : b->head;
1519 611e8e31 2022-05-01 stsp 	if (bhd->mtime < ahd->mtime)
1520 611e8e31 2022-05-01 stsp 		return -1;
1521 611e8e31 2022-05-01 stsp 	if (bhd->mtime > ahd->mtime)
1522 611e8e31 2022-05-01 stsp 		return 1;
1523 611e8e31 2022-05-01 stsp 	if (bhd < ahd)
1524 611e8e31 2022-05-01 stsp 		return -1;
1525 611e8e31 2022-05-01 stsp 	if (bhd > ahd)
1526 611e8e31 2022-05-01 stsp 		return 1;
1527 e6bcace5 2021-06-22 stsp 	if (a->nchain != b->nchain)
1528 e6bcace5 2021-06-22 stsp 		return a->nchain - b->nchain;
1529 611e8e31 2022-05-01 stsp 	if (a->mtime < b->mtime)
1530 611e8e31 2022-05-01 stsp 		return -1;
1531 611e8e31 2022-05-01 stsp 	if (a->mtime > b->mtime)
1532 611e8e31 2022-05-01 stsp 		return 1;
1533 611e8e31 2022-05-01 stsp 	return got_object_id_cmp(&a->id, &b->id);
1534 e6bcace5 2021-06-22 stsp }
1535 e6bcace5 2021-06-22 stsp 
1536 67fd6849 2022-02-13 stsp static int
1537 67fd6849 2022-02-13 stsp reuse_write_order_cmp(const void *pa, const void *pb)
1538 67fd6849 2022-02-13 stsp {
1539 67fd6849 2022-02-13 stsp 	struct got_pack_meta *a, *b;
1540 67fd6849 2022-02-13 stsp 
1541 67fd6849 2022-02-13 stsp 	a = *(struct got_pack_meta **)pa;
1542 67fd6849 2022-02-13 stsp 	b = *(struct got_pack_meta **)pb;
1543 67fd6849 2022-02-13 stsp 
1544 67fd6849 2022-02-13 stsp 	if (a->reused_delta_offset < b->reused_delta_offset)
1545 67fd6849 2022-02-13 stsp 		return -1;
1546 67fd6849 2022-02-13 stsp 	if (a->reused_delta_offset > b->reused_delta_offset)
1547 67fd6849 2022-02-13 stsp 		return 1;
1548 67fd6849 2022-02-13 stsp 	return 0;
1549 67fd6849 2022-02-13 stsp }
1550 67fd6849 2022-02-13 stsp 
1551 e6bcace5 2021-06-22 stsp static const struct got_error *
1552 e6bcace5 2021-06-22 stsp packhdr(int *hdrlen, char *hdr, size_t bufsize, int obj_type, size_t len)
1553 e6bcace5 2021-06-22 stsp {
1554 e6bcace5 2021-06-22 stsp 	size_t i;
1555 e6bcace5 2021-06-22 stsp 
1556 e6bcace5 2021-06-22 stsp 	*hdrlen = 0;
1557 e6bcace5 2021-06-22 stsp 
1558 e6bcace5 2021-06-22 stsp 	hdr[0] = obj_type << 4;
1559 e6bcace5 2021-06-22 stsp 	hdr[0] |= len & 0xf;
1560 e6bcace5 2021-06-22 stsp 	len >>= 4;
1561 e6bcace5 2021-06-22 stsp 	for (i = 1; len != 0; i++){
1562 e6bcace5 2021-06-22 stsp 		if (i >= bufsize)
1563 e6bcace5 2021-06-22 stsp 			return got_error(GOT_ERR_NO_SPACE);
1564 e6bcace5 2021-06-22 stsp 		hdr[i - 1] |= GOT_DELTA_SIZE_MORE;
1565 e6bcace5 2021-06-22 stsp 		hdr[i] = len & GOT_DELTA_SIZE_VAL_MASK;
1566 e6bcace5 2021-06-22 stsp 		len >>= GOT_DELTA_SIZE_SHIFT;
1567 e6bcace5 2021-06-22 stsp 	}
1568 e6bcace5 2021-06-22 stsp 
1569 e6bcace5 2021-06-22 stsp 	*hdrlen = i;
1570 e6bcace5 2021-06-22 stsp 	return NULL;
1571 e6bcace5 2021-06-22 stsp }
1572 e6bcace5 2021-06-22 stsp 
1573 e6bcace5 2021-06-22 stsp static int
1574 e6bcace5 2021-06-22 stsp packoff(char *hdr, off_t off)
1575 e6bcace5 2021-06-22 stsp {
1576 e6bcace5 2021-06-22 stsp 	int i, j;
1577 e6bcace5 2021-06-22 stsp 	char rbuf[8];
1578 e6bcace5 2021-06-22 stsp 
1579 e6bcace5 2021-06-22 stsp 	rbuf[0] = off & GOT_DELTA_SIZE_VAL_MASK;
1580 e6bcace5 2021-06-22 stsp 	for (i = 1; (off >>= GOT_DELTA_SIZE_SHIFT) != 0; i++) {
1581 e6bcace5 2021-06-22 stsp 		rbuf[i] = (--off & GOT_DELTA_SIZE_VAL_MASK) |
1582 e6bcace5 2021-06-22 stsp 		    GOT_DELTA_SIZE_MORE;
1583 e6bcace5 2021-06-22 stsp 	}
1584 e6bcace5 2021-06-22 stsp 
1585 e6bcace5 2021-06-22 stsp 	j = 0;
1586 e6bcace5 2021-06-22 stsp 	while (i > 0)
1587 e6bcace5 2021-06-22 stsp 		hdr[j++] = rbuf[--i];
1588 e6bcace5 2021-06-22 stsp 	return j;
1589 e6bcace5 2021-06-22 stsp }
1590 e6bcace5 2021-06-22 stsp 
1591 e6bcace5 2021-06-22 stsp static const struct got_error *
1592 5060d5a1 2022-01-10 stsp deltahdr(off_t *packfile_size, SHA1_CTX *ctx, FILE *packfile,
1593 67fd6849 2022-02-13 stsp     struct got_pack_meta *m)
1594 5060d5a1 2022-01-10 stsp {
1595 5060d5a1 2022-01-10 stsp 	const struct got_error *err;
1596 5060d5a1 2022-01-10 stsp 	char buf[32];
1597 5060d5a1 2022-01-10 stsp 	int nh;
1598 5060d5a1 2022-01-10 stsp 
1599 67fd6849 2022-02-13 stsp 	if (m->prev->off != 0) {
1600 5060d5a1 2022-01-10 stsp 		err = packhdr(&nh, buf, sizeof(buf),
1601 5060d5a1 2022-01-10 stsp 		    GOT_OBJ_TYPE_OFFSET_DELTA, m->delta_len);
1602 5060d5a1 2022-01-10 stsp 		if (err)
1603 5060d5a1 2022-01-10 stsp 			return err;
1604 5060d5a1 2022-01-10 stsp 		nh += packoff(buf + nh, m->off - m->prev->off);
1605 5060d5a1 2022-01-10 stsp 		err = hwrite(packfile, buf, nh, ctx);
1606 5060d5a1 2022-01-10 stsp 		if (err)
1607 5060d5a1 2022-01-10 stsp 			return err;
1608 5060d5a1 2022-01-10 stsp 		*packfile_size += nh;
1609 5060d5a1 2022-01-10 stsp 	} else {
1610 5060d5a1 2022-01-10 stsp 		err = packhdr(&nh, buf, sizeof(buf),
1611 5060d5a1 2022-01-10 stsp 		    GOT_OBJ_TYPE_REF_DELTA, m->delta_len);
1612 5060d5a1 2022-01-10 stsp 		if (err)
1613 5060d5a1 2022-01-10 stsp 			return err;
1614 5060d5a1 2022-01-10 stsp 		err = hwrite(packfile, buf, nh, ctx);
1615 5060d5a1 2022-01-10 stsp 		if (err)
1616 5060d5a1 2022-01-10 stsp 			return err;
1617 5060d5a1 2022-01-10 stsp 		*packfile_size += nh;
1618 5060d5a1 2022-01-10 stsp 		err = hwrite(packfile, m->prev->id.sha1,
1619 5060d5a1 2022-01-10 stsp 		    sizeof(m->prev->id.sha1), ctx);
1620 5060d5a1 2022-01-10 stsp 		if (err)
1621 5060d5a1 2022-01-10 stsp 			return err;
1622 5060d5a1 2022-01-10 stsp 		*packfile_size += sizeof(m->prev->id.sha1);
1623 5060d5a1 2022-01-10 stsp 	}
1624 5060d5a1 2022-01-10 stsp 
1625 5060d5a1 2022-01-10 stsp 	return NULL;
1626 5060d5a1 2022-01-10 stsp }
1627 5060d5a1 2022-01-10 stsp 
1628 5060d5a1 2022-01-10 stsp static const struct got_error *
1629 67fd6849 2022-02-13 stsp write_packed_object(off_t *packfile_size, FILE *packfile,
1630 67fd6849 2022-02-13 stsp     FILE *delta_cache, struct got_pack_meta *m, int *outfd,
1631 67fd6849 2022-02-13 stsp     SHA1_CTX *ctx, struct got_repository *repo)
1632 67fd6849 2022-02-13 stsp {
1633 67fd6849 2022-02-13 stsp 	const struct got_error *err = NULL;
1634 67fd6849 2022-02-13 stsp 	struct got_deflate_checksum csum;
1635 67fd6849 2022-02-13 stsp 	char buf[32];
1636 67fd6849 2022-02-13 stsp 	int nh;
1637 67fd6849 2022-02-13 stsp 	struct got_raw_object *raw = NULL;
1638 67fd6849 2022-02-13 stsp 	off_t outlen;
1639 67fd6849 2022-02-13 stsp 
1640 67fd6849 2022-02-13 stsp 	csum.output_sha1 = ctx;
1641 67fd6849 2022-02-13 stsp 	csum.output_crc = NULL;
1642 67fd6849 2022-02-13 stsp 
1643 67fd6849 2022-02-13 stsp 	m->off = ftello(packfile);
1644 67fd6849 2022-02-13 stsp 	if (m->delta_len == 0) {
1645 67fd6849 2022-02-13 stsp 		err = got_object_raw_open(&raw, outfd, repo, &m->id);
1646 67fd6849 2022-02-13 stsp 		if (err)
1647 67fd6849 2022-02-13 stsp 			goto done;
1648 67fd6849 2022-02-13 stsp 		err = packhdr(&nh, buf, sizeof(buf),
1649 67fd6849 2022-02-13 stsp 		    m->obj_type, raw->size);
1650 67fd6849 2022-02-13 stsp 		if (err)
1651 67fd6849 2022-02-13 stsp 			goto done;
1652 67fd6849 2022-02-13 stsp 		err = hwrite(packfile, buf, nh, ctx);
1653 67fd6849 2022-02-13 stsp 		if (err)
1654 67fd6849 2022-02-13 stsp 			goto done;
1655 67fd6849 2022-02-13 stsp 		*packfile_size += nh;
1656 67fd6849 2022-02-13 stsp 		if (raw->f == NULL) {
1657 67fd6849 2022-02-13 stsp 			err = got_deflate_to_file_mmap(&outlen,
1658 67fd6849 2022-02-13 stsp 			    raw->data + raw->hdrlen, 0, raw->size,
1659 67fd6849 2022-02-13 stsp 			    packfile, &csum);
1660 67fd6849 2022-02-13 stsp 			if (err)
1661 67fd6849 2022-02-13 stsp 				goto done;
1662 67fd6849 2022-02-13 stsp 		} else {
1663 67fd6849 2022-02-13 stsp 			if (fseeko(raw->f, raw->hdrlen, SEEK_SET)
1664 67fd6849 2022-02-13 stsp 			    == -1) {
1665 67fd6849 2022-02-13 stsp 				err = got_error_from_errno("fseeko");
1666 67fd6849 2022-02-13 stsp 				goto done;
1667 67fd6849 2022-02-13 stsp 			}
1668 67fd6849 2022-02-13 stsp 			err = got_deflate_to_file(&outlen, raw->f,
1669 67fd6849 2022-02-13 stsp 			    raw->size, packfile, &csum);
1670 67fd6849 2022-02-13 stsp 			if (err)
1671 67fd6849 2022-02-13 stsp 				goto done;
1672 67fd6849 2022-02-13 stsp 		}
1673 67fd6849 2022-02-13 stsp 		*packfile_size += outlen;
1674 67fd6849 2022-02-13 stsp 		got_object_raw_close(raw);
1675 67fd6849 2022-02-13 stsp 		raw = NULL;
1676 67fd6849 2022-02-13 stsp 	} else if (m->delta_buf) {
1677 67fd6849 2022-02-13 stsp 		err = deltahdr(packfile_size, ctx, packfile, m);
1678 67fd6849 2022-02-13 stsp 		if (err)
1679 67fd6849 2022-02-13 stsp 			goto done;
1680 67fd6849 2022-02-13 stsp 		err = got_deflate_to_file_mmap(&outlen,
1681 67fd6849 2022-02-13 stsp 		    m->delta_buf, 0, m->delta_len, packfile, &csum);
1682 67fd6849 2022-02-13 stsp 		if (err)
1683 67fd6849 2022-02-13 stsp 			goto done;
1684 67fd6849 2022-02-13 stsp 		*packfile_size += outlen;
1685 67fd6849 2022-02-13 stsp 		free(m->delta_buf);
1686 67fd6849 2022-02-13 stsp 		m->delta_buf = NULL;
1687 67fd6849 2022-02-13 stsp 	} else {
1688 67fd6849 2022-02-13 stsp 		if (fseeko(delta_cache, m->delta_offset, SEEK_SET)
1689 67fd6849 2022-02-13 stsp 		    == -1) {
1690 67fd6849 2022-02-13 stsp 			err = got_error_from_errno("fseeko");
1691 67fd6849 2022-02-13 stsp 			goto done;
1692 67fd6849 2022-02-13 stsp 		}
1693 67fd6849 2022-02-13 stsp 		err = deltahdr(packfile_size, ctx, packfile, m);
1694 67fd6849 2022-02-13 stsp 		if (err)
1695 67fd6849 2022-02-13 stsp 			goto done;
1696 67fd6849 2022-02-13 stsp 		err = got_deflate_to_file(&outlen, delta_cache,
1697 67fd6849 2022-02-13 stsp 		    m->delta_len, packfile, &csum);
1698 67fd6849 2022-02-13 stsp 		if (err)
1699 67fd6849 2022-02-13 stsp 			goto done;
1700 67fd6849 2022-02-13 stsp 		*packfile_size += outlen;
1701 67fd6849 2022-02-13 stsp 	}
1702 67fd6849 2022-02-13 stsp done:
1703 67fd6849 2022-02-13 stsp 	if (raw)
1704 67fd6849 2022-02-13 stsp 		got_object_raw_close(raw);
1705 67fd6849 2022-02-13 stsp 	return err;
1706 67fd6849 2022-02-13 stsp }
1707 67fd6849 2022-02-13 stsp 
1708 67fd6849 2022-02-13 stsp static const struct got_error *
1709 74881701 2021-10-15 stsp genpack(uint8_t *pack_sha1, FILE *packfile, FILE *delta_cache,
1710 67fd6849 2022-02-13 stsp     struct got_pack_meta **deltify, int ndeltify,
1711 67fd6849 2022-02-13 stsp     struct got_pack_meta **reuse, int nreuse,
1712 b8af7c06 2022-03-15 stsp     int ncolored, int nfound, int ntrees, int nours,
1713 b8af7c06 2022-03-15 stsp     struct got_repository *repo,
1714 05118f5a 2021-06-22 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
1715 211cfef0 2022-01-05 stsp     struct got_ratelimit *rl,
1716 05118f5a 2021-06-22 stsp     got_cancel_cb cancel_cb, void *cancel_arg)
1717 e6bcace5 2021-06-22 stsp {
1718 e6bcace5 2021-06-22 stsp 	const struct got_error *err = NULL;
1719 67fd6849 2022-02-13 stsp 	int i;
1720 e6bcace5 2021-06-22 stsp 	SHA1_CTX ctx;
1721 e6bcace5 2021-06-22 stsp 	struct got_pack_meta *m;
1722 08347b73 2021-10-14 stsp 	char buf[32];
1723 72840534 2022-01-19 stsp 	size_t n;
1724 67fd6849 2022-02-13 stsp 	off_t packfile_size = 0;
1725 cc7a354a 2021-10-15 stsp 	int outfd = -1;
1726 e6bcace5 2021-06-22 stsp 
1727 e6bcace5 2021-06-22 stsp 	SHA1Init(&ctx);
1728 e6bcace5 2021-06-22 stsp 
1729 e6bcace5 2021-06-22 stsp 	err = hwrite(packfile, "PACK", 4, &ctx);
1730 e6bcace5 2021-06-22 stsp 	if (err)
1731 e6bcace5 2021-06-22 stsp 		return err;
1732 e6bcace5 2021-06-22 stsp 	putbe32(buf, GOT_PACKFILE_VERSION);
1733 e6bcace5 2021-06-22 stsp 	err = hwrite(packfile, buf, 4, &ctx);
1734 e6bcace5 2021-06-22 stsp 	if (err)
1735 e6bcace5 2021-06-22 stsp 		goto done;
1736 67fd6849 2022-02-13 stsp 	putbe32(buf, ndeltify + nreuse);
1737 e6bcace5 2021-06-22 stsp 	err = hwrite(packfile, buf, 4, &ctx);
1738 e6bcace5 2021-06-22 stsp 	if (err)
1739 e6bcace5 2021-06-22 stsp 		goto done;
1740 67fd6849 2022-02-13 stsp 
1741 67fd6849 2022-02-13 stsp 	qsort(deltify, ndeltify, sizeof(struct got_pack_meta *),
1742 67fd6849 2022-02-13 stsp 	    write_order_cmp);
1743 67fd6849 2022-02-13 stsp 	for (i = 0; i < ndeltify; i++) {
1744 211cfef0 2022-01-05 stsp 		err = report_progress(progress_cb, progress_arg, rl,
1745 b8af7c06 2022-03-15 stsp 		    ncolored, nfound, ntrees, packfile_size, nours,
1746 b8af7c06 2022-03-15 stsp 		    ndeltify + nreuse, ndeltify + nreuse, i);
1747 211cfef0 2022-01-05 stsp 		if (err)
1748 211cfef0 2022-01-05 stsp 			goto done;
1749 67fd6849 2022-02-13 stsp 		m = deltify[i];
1750 67fd6849 2022-02-13 stsp 		err = write_packed_object(&packfile_size, packfile,
1751 67fd6849 2022-02-13 stsp 		    delta_cache, m, &outfd, &ctx, repo);
1752 67fd6849 2022-02-13 stsp 		if (err)
1753 67fd6849 2022-02-13 stsp 			goto done;
1754 e6bcace5 2021-06-22 stsp 	}
1755 67fd6849 2022-02-13 stsp 
1756 67fd6849 2022-02-13 stsp 	qsort(reuse, nreuse, sizeof(struct got_pack_meta *),
1757 67fd6849 2022-02-13 stsp 	    reuse_write_order_cmp);
1758 67fd6849 2022-02-13 stsp 	for (i = 0; i < nreuse; i++) {
1759 67fd6849 2022-02-13 stsp 		err = report_progress(progress_cb, progress_arg, rl,
1760 b8af7c06 2022-03-15 stsp 		    ncolored, nfound, ntrees, packfile_size, nours,
1761 b8af7c06 2022-03-15 stsp 		    ndeltify + nreuse, ndeltify + nreuse, ndeltify + i);
1762 67fd6849 2022-02-13 stsp 		if (err)
1763 67fd6849 2022-02-13 stsp 			goto done;
1764 67fd6849 2022-02-13 stsp 		m = reuse[i];
1765 67fd6849 2022-02-13 stsp 		err = write_packed_object(&packfile_size, packfile,
1766 67fd6849 2022-02-13 stsp 		    delta_cache, m, &outfd, &ctx, repo);
1767 67fd6849 2022-02-13 stsp 		if (err)
1768 67fd6849 2022-02-13 stsp 			goto done;
1769 67fd6849 2022-02-13 stsp 	}
1770 67fd6849 2022-02-13 stsp 
1771 e6bcace5 2021-06-22 stsp 	SHA1Final(pack_sha1, &ctx);
1772 e6bcace5 2021-06-22 stsp 	n = fwrite(pack_sha1, 1, SHA1_DIGEST_LENGTH, packfile);
1773 e6bcace5 2021-06-22 stsp 	if (n != SHA1_DIGEST_LENGTH)
1774 e6bcace5 2021-06-22 stsp 		err = got_ferror(packfile, GOT_ERR_IO);
1775 05118f5a 2021-06-22 stsp 	packfile_size += SHA1_DIGEST_LENGTH;
1776 dc7edd42 2021-08-22 stsp 	packfile_size += sizeof(struct got_packfile_hdr);
1777 211cfef0 2022-01-05 stsp 	if (progress_cb) {
1778 b8af7c06 2022-03-15 stsp 		err = progress_cb(progress_arg, ncolored, nfound, ntrees,
1779 b8af7c06 2022-03-15 stsp 		    packfile_size, nours, ndeltify + nreuse,
1780 b8af7c06 2022-03-15 stsp 		    ndeltify + nreuse, ndeltify + nreuse);
1781 211cfef0 2022-01-05 stsp 		if (err)
1782 211cfef0 2022-01-05 stsp 			goto done;
1783 211cfef0 2022-01-05 stsp 	}
1784 e6bcace5 2021-06-22 stsp done:
1785 cc7a354a 2021-10-15 stsp 	if (outfd != -1 && close(outfd) == -1 && err == NULL)
1786 cc7a354a 2021-10-15 stsp 		err = got_error_from_errno("close");
1787 e6bcace5 2021-06-22 stsp 	return err;
1788 e6bcace5 2021-06-22 stsp }
1789 e6bcace5 2021-06-22 stsp 
1790 67fd6849 2022-02-13 stsp static const struct got_error *
1791 cbc287dc 2022-04-19 stsp remove_unused_object(struct got_object_id *id, void *data, void *arg)
1792 67fd6849 2022-02-13 stsp {
1793 67fd6849 2022-02-13 stsp 	struct got_object_idset *idset = arg;
1794 67fd6849 2022-02-13 stsp 
1795 cbc287dc 2022-04-19 stsp 	if (data == NULL)
1796 cbc287dc 2022-04-19 stsp 		got_object_idset_remove(NULL, idset, id);
1797 67fd6849 2022-02-13 stsp 
1798 67fd6849 2022-02-13 stsp 	return NULL;
1799 67fd6849 2022-02-13 stsp }
1800 67fd6849 2022-02-13 stsp 
1801 67fd6849 2022-02-13 stsp static const struct got_error *
1802 cbc287dc 2022-04-19 stsp remove_reused_object(struct got_object_id *id, void *data, void *arg)
1803 67fd6849 2022-02-13 stsp {
1804 67fd6849 2022-02-13 stsp 	struct got_object_idset *idset = arg;
1805 cbc287dc 2022-04-19 stsp 	struct got_pack_meta *m = data;
1806 67fd6849 2022-02-13 stsp 
1807 67fd6849 2022-02-13 stsp 	if (m->have_reused_delta)
1808 cbc287dc 2022-04-19 stsp 		got_object_idset_remove(NULL, idset, id);
1809 67fd6849 2022-02-13 stsp 
1810 67fd6849 2022-02-13 stsp 	return NULL;
1811 67fd6849 2022-02-13 stsp }
1812 67fd6849 2022-02-13 stsp 
1813 67fd6849 2022-02-13 stsp static const struct got_error *
1814 67fd6849 2022-02-13 stsp add_meta_idset_cb(struct got_object_id *id, void *data, void *arg)
1815 67fd6849 2022-02-13 stsp {
1816 67fd6849 2022-02-13 stsp 	struct got_pack_meta *m = data;
1817 67fd6849 2022-02-13 stsp 	struct got_pack_metavec *v = arg;
1818 67fd6849 2022-02-13 stsp 
1819 67fd6849 2022-02-13 stsp 	return add_meta(m, v);
1820 67fd6849 2022-02-13 stsp }
1821 67fd6849 2022-02-13 stsp 
1822 e6bcace5 2021-06-22 stsp const struct got_error *
1823 e6bcace5 2021-06-22 stsp got_pack_create(uint8_t *packsha1, FILE *packfile,
1824 e6bcace5 2021-06-22 stsp     struct got_object_id **theirs, int ntheirs,
1825 e6bcace5 2021-06-22 stsp     struct got_object_id **ours, int nours,
1826 f8a36e22 2021-08-26 stsp     struct got_repository *repo, int loose_obj_only, int allow_empty,
1827 05118f5a 2021-06-22 stsp     got_pack_progress_cb progress_cb, void *progress_arg,
1828 05118f5a 2021-06-22 stsp     got_cancel_cb cancel_cb, void *cancel_arg)
1829 e6bcace5 2021-06-22 stsp {
1830 e6bcace5 2021-06-22 stsp 	const struct got_error *err;
1831 67fd6849 2022-02-13 stsp 	int delta_cache_fd = -1;
1832 74881701 2021-10-15 stsp 	FILE *delta_cache = NULL;
1833 67fd6849 2022-02-13 stsp 	struct got_object_idset *idset;
1834 211cfef0 2022-01-05 stsp 	struct got_ratelimit rl;
1835 67fd6849 2022-02-13 stsp 	struct got_pack_metavec deltify, reuse;
1836 b8af7c06 2022-03-15 stsp 	int ncolored = 0, nfound = 0, ntrees = 0;
1837 e6bcace5 2021-06-22 stsp 
1838 67fd6849 2022-02-13 stsp 	memset(&deltify, 0, sizeof(deltify));
1839 67fd6849 2022-02-13 stsp 	memset(&reuse, 0, sizeof(reuse));
1840 67fd6849 2022-02-13 stsp 
1841 211cfef0 2022-01-05 stsp 	got_ratelimit_init(&rl, 0, 500);
1842 211cfef0 2022-01-05 stsp 
1843 67fd6849 2022-02-13 stsp 	idset = got_object_idset_alloc();
1844 67fd6849 2022-02-13 stsp 	if (idset == NULL)
1845 67fd6849 2022-02-13 stsp 		return got_error_from_errno("got_object_idset_alloc");
1846 67fd6849 2022-02-13 stsp 
1847 b8af7c06 2022-03-15 stsp 	err = load_object_ids(&ncolored, &nfound, &ntrees, idset, theirs,
1848 b8af7c06 2022-03-15 stsp 	    ntheirs, ours, nours, repo, loose_obj_only,
1849 b8af7c06 2022-03-15 stsp 	    progress_cb, progress_arg, &rl, cancel_cb, cancel_arg);
1850 e6bcace5 2021-06-22 stsp 	if (err)
1851 e6bcace5 2021-06-22 stsp 		return err;
1852 e6bcace5 2021-06-22 stsp 
1853 cbc287dc 2022-04-19 stsp 	err = got_object_idset_for_each(idset, remove_unused_object, idset);
1854 67fd6849 2022-02-13 stsp 	if (err)
1855 67fd6849 2022-02-13 stsp 		goto done;
1856 67fd6849 2022-02-13 stsp 
1857 28526235 2022-02-13 stsp 	if (progress_cb) {
1858 b8af7c06 2022-03-15 stsp 		err = progress_cb(progress_arg, ncolored, nfound, ntrees,
1859 b8af7c06 2022-03-15 stsp 		    0L, nours, got_object_idset_num_elements(idset), 0, 0);
1860 28526235 2022-02-13 stsp 		if (err)
1861 28526235 2022-02-13 stsp 			goto done;
1862 28526235 2022-02-13 stsp 	}
1863 28526235 2022-02-13 stsp 
1864 67fd6849 2022-02-13 stsp 	if (got_object_idset_num_elements(idset) == 0 && !allow_empty) {
1865 05118f5a 2021-06-22 stsp 		err = got_error(GOT_ERR_CANNOT_PACK);
1866 05118f5a 2021-06-22 stsp 		goto done;
1867 05118f5a 2021-06-22 stsp 	}
1868 74881701 2021-10-15 stsp 
1869 67fd6849 2022-02-13 stsp 	delta_cache_fd = got_opentempfd();
1870 67fd6849 2022-02-13 stsp 	if (delta_cache_fd == -1) {
1871 74881701 2021-10-15 stsp 		err = got_error_from_errno("got_opentemp");
1872 74881701 2021-10-15 stsp 		goto done;
1873 74881701 2021-10-15 stsp 	}
1874 74881701 2021-10-15 stsp 
1875 67fd6849 2022-02-13 stsp 	reuse.metasz = 64;
1876 67fd6849 2022-02-13 stsp 	reuse.meta = calloc(reuse.metasz,
1877 67fd6849 2022-02-13 stsp 	    sizeof(struct got_pack_meta *));
1878 67fd6849 2022-02-13 stsp 	if (reuse.meta == NULL) {
1879 67fd6849 2022-02-13 stsp 		err = got_error_from_errno("calloc");
1880 67fd6849 2022-02-13 stsp 		goto done;
1881 67fd6849 2022-02-13 stsp 	}
1882 67fd6849 2022-02-13 stsp 
1883 b8af7c06 2022-03-15 stsp 	err = search_deltas(&reuse, idset, delta_cache_fd, ncolored, nfound,
1884 b8af7c06 2022-03-15 stsp 	    ntrees, nours, repo, progress_cb, progress_arg, &rl,
1885 b8af7c06 2022-03-15 stsp 	    cancel_cb, cancel_arg);
1886 67fd6849 2022-02-13 stsp 	if (err)
1887 67fd6849 2022-02-13 stsp 		goto done;
1888 67fd6849 2022-02-13 stsp 	if (reuse.nmeta > 0) {
1889 cbc287dc 2022-04-19 stsp 		err = got_object_idset_for_each(idset,
1890 67fd6849 2022-02-13 stsp 		    remove_reused_object, idset);
1891 67fd6849 2022-02-13 stsp 		if (err)
1892 67fd6849 2022-02-13 stsp 			goto done;
1893 67fd6849 2022-02-13 stsp 	}
1894 67fd6849 2022-02-13 stsp 
1895 67fd6849 2022-02-13 stsp 	delta_cache = fdopen(delta_cache_fd, "a+");
1896 67fd6849 2022-02-13 stsp 	if (delta_cache == NULL) {
1897 67fd6849 2022-02-13 stsp 		err = got_error_from_errno("fdopen");
1898 67fd6849 2022-02-13 stsp 		goto done;
1899 67fd6849 2022-02-13 stsp 	}
1900 67fd6849 2022-02-13 stsp 	delta_cache_fd = -1;
1901 67fd6849 2022-02-13 stsp 
1902 67fd6849 2022-02-13 stsp 	if (fseeko(delta_cache, 0L, SEEK_END) == -1) {
1903 67fd6849 2022-02-13 stsp 		err = got_error_from_errno("fseeko");
1904 67fd6849 2022-02-13 stsp 		goto done;
1905 67fd6849 2022-02-13 stsp 	}
1906 67fd6849 2022-02-13 stsp 
1907 67fd6849 2022-02-13 stsp 	deltify.meta = calloc(got_object_idset_num_elements(idset),
1908 67fd6849 2022-02-13 stsp 	    sizeof(struct got_pack_meta *));
1909 67fd6849 2022-02-13 stsp 	if (deltify.meta == NULL) {
1910 67fd6849 2022-02-13 stsp 		err = got_error_from_errno("calloc");
1911 67fd6849 2022-02-13 stsp 		goto done;
1912 67fd6849 2022-02-13 stsp 	}
1913 67fd6849 2022-02-13 stsp 	deltify.metasz = got_object_idset_num_elements(idset);
1914 67fd6849 2022-02-13 stsp 
1915 67fd6849 2022-02-13 stsp 	err = got_object_idset_for_each(idset, add_meta_idset_cb, &deltify);
1916 67fd6849 2022-02-13 stsp 	if (err)
1917 67fd6849 2022-02-13 stsp 		goto done;
1918 67fd6849 2022-02-13 stsp 	if (deltify.nmeta > 0) {
1919 b8af7c06 2022-03-15 stsp 		err = pick_deltas(deltify.meta, deltify.nmeta, ncolored,
1920 b8af7c06 2022-03-15 stsp 		    nfound, ntrees, nours, reuse.nmeta, delta_cache, repo,
1921 211cfef0 2022-01-05 stsp 		    progress_cb, progress_arg, &rl, cancel_cb, cancel_arg);
1922 f8a36e22 2021-08-26 stsp 		if (err)
1923 f8a36e22 2021-08-26 stsp 			goto done;
1924 74881701 2021-10-15 stsp 		if (fseeko(delta_cache, 0L, SEEK_SET) == -1) {
1925 74881701 2021-10-15 stsp 			err = got_error_from_errno("fseeko");
1926 74881701 2021-10-15 stsp 			goto done;
1927 74881701 2021-10-15 stsp 		}
1928 f8a36e22 2021-08-26 stsp 	}
1929 e6bcace5 2021-06-22 stsp 
1930 67fd6849 2022-02-13 stsp 	err = genpack(packsha1, packfile, delta_cache, deltify.meta,
1931 b8af7c06 2022-03-15 stsp 	    deltify.nmeta, reuse.meta, reuse.nmeta, ncolored, nfound, ntrees,
1932 b8af7c06 2022-03-15 stsp 	    nours, repo, progress_cb, progress_arg, &rl,
1933 b8af7c06 2022-03-15 stsp 	    cancel_cb, cancel_arg);
1934 e6bcace5 2021-06-22 stsp 	if (err)
1935 e6bcace5 2021-06-22 stsp 		goto done;
1936 e6bcace5 2021-06-22 stsp done:
1937 67fd6849 2022-02-13 stsp 	free_nmeta(deltify.meta, deltify.nmeta);
1938 67fd6849 2022-02-13 stsp 	free_nmeta(reuse.meta, reuse.nmeta);
1939 67fd6849 2022-02-13 stsp 	got_object_idset_free(idset);
1940 67fd6849 2022-02-13 stsp 	if (delta_cache_fd != -1 && close(delta_cache_fd) == -1 && err == NULL)
1941 67fd6849 2022-02-13 stsp 		err = got_error_from_errno("close");
1942 74881701 2021-10-15 stsp 	if (delta_cache && fclose(delta_cache) == EOF && err == NULL)
1943 74881701 2021-10-15 stsp 		err = got_error_from_errno("fclose");
1944 e6bcace5 2021-06-22 stsp 	return err;
1945 e6bcace5 2021-06-22 stsp }