diff options
Diffstat (limited to 'pack-revindex.c')
| -rw-r--r-- | pack-revindex.c | 73 |
1 files changed, 56 insertions, 17 deletions
diff --git a/pack-revindex.c b/pack-revindex.c index 7fffcad912..22d3c23464 100644 --- a/pack-revindex.c +++ b/pack-revindex.c @@ -1,3 +1,5 @@ +#define USE_THE_REPOSITORY_VARIABLE + #include "git-compat-util.h" #include "gettext.h" #include "pack-revindex.h" @@ -6,7 +8,7 @@ #include "packfile.h" #include "strbuf.h" #include "trace2.h" -#include "config.h" +#include "parse.h" #include "midx.h" #include "csum-file.h" @@ -343,6 +345,17 @@ int verify_pack_revindex(struct packed_git *p) return res; } +static int can_use_midx_ridx_chunk(struct multi_pack_index *m) +{ + if (!m->chunk_revindex) + return 0; + if (m->chunk_revindex_len != st_mult(sizeof(uint32_t), m->num_objects)) { + error(_("multi-pack-index reverse-index chunk is the wrong size")); + return 0; + } + return 1; +} + int load_midx_revindex(struct multi_pack_index *m) { struct strbuf revindex_name = STRBUF_INIT; @@ -351,7 +364,7 @@ int load_midx_revindex(struct multi_pack_index *m) if (m->revindex_data) return 0; - if (m->chunk_revindex) { + if (can_use_midx_ridx_chunk(m)) { /* * If the MIDX `m` has a `RIDX` chunk, then use its contents for * the reverse index instead of trying to load a separate `.rev` @@ -370,7 +383,8 @@ int load_midx_revindex(struct multi_pack_index *m) trace2_data_string("load_midx_revindex", the_repository, "source", "rev"); - get_midx_rev_filename(&revindex_name, m); + get_midx_filename_ext(&revindex_name, m->object_dir, + get_midx_checksum(m), MIDX_EXT_REV); ret = load_revindex_from_disk(revindex_name.buf, m->num_objects, @@ -509,19 +523,15 @@ static int midx_pack_order_cmp(const void *va, const void *vb) return 0; } -int midx_to_pack_pos(struct multi_pack_index *m, uint32_t at, uint32_t *pos) +static int midx_key_to_pack_pos(struct multi_pack_index *m, + struct midx_pack_key *key, + uint32_t *pos) { - struct midx_pack_key key; uint32_t *found; - if (!m->revindex_data) - BUG("midx_to_pack_pos: reverse index not yet loaded"); - if (m->num_objects <= at) - BUG("midx_to_pack_pos: out-of-bounds object at %"PRIu32, at); - - key.pack = nth_midxed_pack_int_id(m, at); - key.offset = nth_midxed_offset(m, at); - key.midx = m; + if (key->pack >= m->num_packs) + BUG("MIDX pack lookup out of bounds (%"PRIu32" >= %"PRIu32")", + key->pack, m->num_packs); /* * The preferred pack sorts first, so determine its identifier by * looking at the first object in pseudo-pack order. @@ -531,14 +541,43 @@ int midx_to_pack_pos(struct multi_pack_index *m, uint32_t at, uint32_t *pos) * implicitly is preferred (and includes all its objects, since ties are * broken first by pack identifier). */ - key.preferred_pack = nth_midxed_pack_int_id(m, pack_pos_to_midx(m, 0)); + if (midx_preferred_pack(key->midx, &key->preferred_pack) < 0) + return error(_("could not determine preferred pack")); - found = bsearch(&key, m->revindex_data, m->num_objects, - sizeof(*m->revindex_data), midx_pack_order_cmp); + found = bsearch(key, m->revindex_data, m->num_objects, + sizeof(*m->revindex_data), + midx_pack_order_cmp); if (!found) - return error("bad offset for revindex"); + return -1; *pos = found - m->revindex_data; return 0; } + +int midx_to_pack_pos(struct multi_pack_index *m, uint32_t at, uint32_t *pos) +{ + struct midx_pack_key key; + + if (!m->revindex_data) + BUG("midx_to_pack_pos: reverse index not yet loaded"); + if (m->num_objects <= at) + BUG("midx_to_pack_pos: out-of-bounds object at %"PRIu32, at); + + key.pack = nth_midxed_pack_int_id(m, at); + key.offset = nth_midxed_offset(m, at); + key.midx = m; + + return midx_key_to_pack_pos(m, &key, pos); +} + +int midx_pair_to_pack_pos(struct multi_pack_index *m, uint32_t pack_int_id, + off_t ofs, uint32_t *pos) +{ + struct midx_pack_key key = { + .pack = pack_int_id, + .offset = ofs, + .midx = m, + }; + return midx_key_to_pack_pos(m, &key, pos); +} |