diff options
Diffstat (limited to 'third_party/git/builtin/fast-import.c')
| -rw-r--r-- | third_party/git/builtin/fast-import.c | 3634 |
1 files changed, 0 insertions, 3634 deletions
diff --git a/third_party/git/builtin/fast-import.c b/third_party/git/builtin/fast-import.c deleted file mode 100644 index 1bf50a73dc35..000000000000 --- a/third_party/git/builtin/fast-import.c +++ /dev/null @@ -1,3634 +0,0 @@ -#include "builtin.h" -#include "cache.h" -#include "repository.h" -#include "config.h" -#include "lockfile.h" -#include "object.h" -#include "blob.h" -#include "tree.h" -#include "commit.h" -#include "delta.h" -#include "pack.h" -#include "refs.h" -#include "csum-file.h" -#include "quote.h" -#include "dir.h" -#include "run-command.h" -#include "packfile.h" -#include "object-store.h" -#include "mem-pool.h" -#include "commit-reach.h" -#include "khash.h" - -#define PACK_ID_BITS 16 -#define MAX_PACK_ID ((1<<PACK_ID_BITS)-1) -#define DEPTH_BITS 13 -#define MAX_DEPTH ((1<<DEPTH_BITS)-1) - -/* - * We abuse the setuid bit on directories to mean "do not delta". - */ -#define NO_DELTA S_ISUID - -/* - * The amount of additional space required in order to write an object into the - * current pack. This is the hash lengths at the end of the pack, plus the - * length of one object ID. - */ -#define PACK_SIZE_THRESHOLD (the_hash_algo->rawsz * 3) - -struct object_entry { - struct pack_idx_entry idx; - struct hashmap_entry ent; - uint32_t type : TYPE_BITS, - pack_id : PACK_ID_BITS, - depth : DEPTH_BITS; -}; - -static int object_entry_hashcmp(const void *map_data, - const struct hashmap_entry *eptr, - const struct hashmap_entry *entry_or_key, - const void *keydata) -{ - const struct object_id *oid = keydata; - const struct object_entry *e1, *e2; - - e1 = container_of(eptr, const struct object_entry, ent); - if (oid) - return oidcmp(&e1->idx.oid, oid); - - e2 = container_of(entry_or_key, const struct object_entry, ent); - return oidcmp(&e1->idx.oid, &e2->idx.oid); -} - -struct object_entry_pool { - struct object_entry_pool *next_pool; - struct object_entry *next_free; - struct object_entry *end; - struct object_entry entries[FLEX_ARRAY]; /* more */ -}; - -struct mark_set { - union { - struct object_id *oids[1024]; - struct object_entry *marked[1024]; - struct mark_set *sets[1024]; - } data; - unsigned int shift; -}; - -struct last_object { - struct strbuf data; - off_t offset; - unsigned int depth; - unsigned no_swap : 1; -}; - -struct atom_str { - struct atom_str *next_atom; - unsigned short str_len; - char str_dat[FLEX_ARRAY]; /* more */ -}; - -struct tree_content; -struct tree_entry { - struct tree_content *tree; - struct atom_str *name; - struct tree_entry_ms { - uint16_t mode; - struct object_id oid; - } versions[2]; -}; - -struct tree_content { - unsigned int entry_capacity; /* must match avail_tree_content */ - unsigned int entry_count; - unsigned int delta_depth; - struct tree_entry *entries[FLEX_ARRAY]; /* more */ -}; - -struct avail_tree_content { - unsigned int entry_capacity; /* must match tree_content */ - struct avail_tree_content *next_avail; -}; - -struct branch { - struct branch *table_next_branch; - struct branch *active_next_branch; - const char *name; - struct tree_entry branch_tree; - uintmax_t last_commit; - uintmax_t num_notes; - unsigned active : 1; - unsigned delete : 1; - unsigned pack_id : PACK_ID_BITS; - struct object_id oid; -}; - -struct tag { - struct tag *next_tag; - const char *name; - unsigned int pack_id; - struct object_id oid; -}; - -struct hash_list { - struct hash_list *next; - struct object_id oid; -}; - -typedef enum { - WHENSPEC_RAW = 1, - WHENSPEC_RAW_PERMISSIVE, - WHENSPEC_RFC2822, - WHENSPEC_NOW -} whenspec_type; - -struct recent_command { - struct recent_command *prev; - struct recent_command *next; - char *buf; -}; - -typedef void (*mark_set_inserter_t)(struct mark_set *s, struct object_id *oid, uintmax_t mark); -typedef void (*each_mark_fn_t)(uintmax_t mark, void *obj, void *cbp); - -/* Configured limits on output */ -static unsigned long max_depth = 50; -static off_t max_packsize; -static int unpack_limit = 100; -static int force_update; - -/* Stats and misc. counters */ -static uintmax_t alloc_count; -static uintmax_t marks_set_count; -static uintmax_t object_count_by_type[1 << TYPE_BITS]; -static uintmax_t duplicate_count_by_type[1 << TYPE_BITS]; -static uintmax_t delta_count_by_type[1 << TYPE_BITS]; -static uintmax_t delta_count_attempts_by_type[1 << TYPE_BITS]; -static unsigned long object_count; -static unsigned long branch_count; -static unsigned long branch_load_count; -static int failure; -static FILE *pack_edges; -static unsigned int show_stats = 1; -static int global_argc; -static const char **global_argv; - -/* Memory pools */ -static struct mem_pool fi_mem_pool = {NULL, 2*1024*1024 - - sizeof(struct mp_block), 0 }; - -/* Atom management */ -static unsigned int atom_table_sz = 4451; -static unsigned int atom_cnt; -static struct atom_str **atom_table; - -/* The .pack file being generated */ -static struct pack_idx_option pack_idx_opts; -static unsigned int pack_id; -static struct hashfile *pack_file; -static struct packed_git *pack_data; -static struct packed_git **all_packs; -static off_t pack_size; - -/* Table of objects we've written. */ -static unsigned int object_entry_alloc = 5000; -static struct object_entry_pool *blocks; -static struct hashmap object_table; -static struct mark_set *marks; -static const char *export_marks_file; -static const char *import_marks_file; -static int import_marks_file_from_stream; -static int import_marks_file_ignore_missing; -static int import_marks_file_done; -static int relative_marks_paths; - -/* Our last blob */ -static struct last_object last_blob = { STRBUF_INIT, 0, 0, 0 }; - -/* Tree management */ -static unsigned int tree_entry_alloc = 1000; -static void *avail_tree_entry; -static unsigned int avail_tree_table_sz = 100; -static struct avail_tree_content **avail_tree_table; -static size_t tree_entry_allocd; -static struct strbuf old_tree = STRBUF_INIT; -static struct strbuf new_tree = STRBUF_INIT; - -/* Branch data */ -static unsigned long max_active_branches = 5; -static unsigned long cur_active_branches; -static unsigned long branch_table_sz = 1039; -static struct branch **branch_table; -static struct branch *active_branches; - -/* Tag data */ -static struct tag *first_tag; -static struct tag *last_tag; - -/* Input stream parsing */ -static whenspec_type whenspec = WHENSPEC_RAW; -static struct strbuf command_buf = STRBUF_INIT; -static int unread_command_buf; -static struct recent_command cmd_hist = {&cmd_hist, &cmd_hist, NULL}; -static struct recent_command *cmd_tail = &cmd_hist; -static struct recent_command *rc_free; -static unsigned int cmd_save = 100; -static uintmax_t next_mark; -static struct strbuf new_data = STRBUF_INIT; -static int seen_data_command; -static int require_explicit_termination; -static int allow_unsafe_features; - -/* Signal handling */ -static volatile sig_atomic_t checkpoint_requested; - -/* Submodule marks */ -static struct string_list sub_marks_from = STRING_LIST_INIT_DUP; -static struct string_list sub_marks_to = STRING_LIST_INIT_DUP; -static kh_oid_map_t *sub_oid_map; - -/* Where to write output of cat-blob commands */ -static int cat_blob_fd = STDOUT_FILENO; - -static void parse_argv(void); -static void parse_get_mark(const char *p); -static void parse_cat_blob(const char *p); -static void parse_ls(const char *p, struct branch *b); - -static void for_each_mark(struct mark_set *m, uintmax_t base, each_mark_fn_t callback, void *p) -{ - uintmax_t k; - if (m->shift) { - for (k = 0; k < 1024; k++) { - if (m->data.sets[k]) - for_each_mark(m->data.sets[k], base + (k << m->shift), callback, p); - } - } else { - for (k = 0; k < 1024; k++) { - if (m->data.marked[k]) - callback(base + k, m->data.marked[k], p); - } - } -} - -static void dump_marks_fn(uintmax_t mark, void *object, void *cbp) { - struct object_entry *e = object; - FILE *f = cbp; - - fprintf(f, ":%" PRIuMAX " %s\n", mark, oid_to_hex(&e->idx.oid)); -} - -static void write_branch_report(FILE *rpt, struct branch *b) -{ - fprintf(rpt, "%s:\n", b->name); - - fprintf(rpt, " status :"); - if (b->active) - fputs(" active", rpt); - if (b->branch_tree.tree) - fputs(" loaded", rpt); - if (is_null_oid(&b->branch_tree.versions[1].oid)) - fputs(" dirty", rpt); - fputc('\n', rpt); - - fprintf(rpt, " tip commit : %s\n", oid_to_hex(&b->oid)); - fprintf(rpt, " old tree : %s\n", - oid_to_hex(&b->branch_tree.versions[0].oid)); - fprintf(rpt, " cur tree : %s\n", - oid_to_hex(&b->branch_tree.versions[1].oid)); - fprintf(rpt, " commit clock: %" PRIuMAX "\n", b->last_commit); - - fputs(" last pack : ", rpt); - if (b->pack_id < MAX_PACK_ID) - fprintf(rpt, "%u", b->pack_id); - fputc('\n', rpt); - - fputc('\n', rpt); -} - -static void write_crash_report(const char *err) -{ - char *loc = git_pathdup("fast_import_crash_%"PRIuMAX, (uintmax_t) getpid()); - FILE *rpt = fopen(loc, "w"); - struct branch *b; - unsigned long lu; - struct recent_command *rc; - - if (!rpt) { - error_errno("can't write crash report %s", loc); - free(loc); - return; - } - - fprintf(stderr, "fast-import: dumping crash report to %s\n", loc); - - fprintf(rpt, "fast-import crash report:\n"); - fprintf(rpt, " fast-import process: %"PRIuMAX"\n", (uintmax_t) getpid()); - fprintf(rpt, " parent process : %"PRIuMAX"\n", (uintmax_t) getppid()); - fprintf(rpt, " at %s\n", show_date(time(NULL), 0, DATE_MODE(ISO8601))); - fputc('\n', rpt); - - fputs("fatal: ", rpt); - fputs(err, rpt); - fputc('\n', rpt); - - fputc('\n', rpt); - fputs("Most Recent Commands Before Crash\n", rpt); - fputs("---------------------------------\n", rpt); - for (rc = cmd_hist.next; rc != &cmd_hist; rc = rc->next) { - if (rc->next == &cmd_hist) - fputs("* ", rpt); - else - fputs(" ", rpt); - fputs(rc->buf, rpt); - fputc('\n', rpt); - } - - fputc('\n', rpt); - fputs("Active Branch LRU\n", rpt); - fputs("-----------------\n", rpt); - fprintf(rpt, " active_branches = %lu cur, %lu max\n", - cur_active_branches, - max_active_branches); - fputc('\n', rpt); - fputs(" pos clock name\n", rpt); - fputs(" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n", rpt); - for (b = active_branches, lu = 0; b; b = b->active_next_branch) - fprintf(rpt, " %2lu) %6" PRIuMAX" %s\n", - ++lu, b->last_commit, b->name); - - fputc('\n', rpt); - fputs("Inactive Branches\n", rpt); - fputs("-----------------\n", rpt); - for (lu = 0; lu < branch_table_sz; lu++) { - for (b = branch_table[lu]; b; b = b->table_next_branch) - write_branch_report(rpt, b); - } - - if (first_tag) { - struct tag *tg; - fputc('\n', rpt); - fputs("Annotated Tags\n", rpt); - fputs("--------------\n", rpt); - for (tg = first_tag; tg; tg = tg->next_tag) { - fputs(oid_to_hex(&tg->oid), rpt); - fputc(' ', rpt); - fputs(tg->name, rpt); - fputc('\n', rpt); - } - } - - fputc('\n', rpt); - fputs("Marks\n", rpt); - fputs("-----\n", rpt); - if (export_marks_file) - fprintf(rpt, " exported to %s\n", export_marks_file); - else - for_each_mark(marks, 0, dump_marks_fn, rpt); - - fputc('\n', rpt); - fputs("-------------------\n", rpt); - fputs("END OF CRASH REPORT\n", rpt); - fclose(rpt); - free(loc); -} - -static void end_packfile(void); -static void unkeep_all_packs(void); -static void dump_marks(void); - -static NORETURN void die_nicely(const char *err, va_list params) -{ - static int zombie; - char message[2 * PATH_MAX]; - - vsnprintf(message, sizeof(message), err, params); - fputs("fatal: ", stderr); - fputs(message, stderr); - fputc('\n', stderr); - - if (!zombie) { - zombie = 1; - write_crash_report(message); - end_packfile(); - unkeep_all_packs(); - dump_marks(); - } - exit(128); -} - -#ifndef SIGUSR1 /* Windows, for example */ - -static void set_checkpoint_signal(void) -{ -} - -#else - -static void checkpoint_signal(int signo) -{ - checkpoint_requested = 1; -} - -static void set_checkpoint_signal(void) -{ - struct sigaction sa; - - memset(&sa, 0, sizeof(sa)); - sa.sa_handler = checkpoint_signal; - sigemptyset(&sa.sa_mask); - sa.sa_flags = SA_RESTART; - sigaction(SIGUSR1, &sa, NULL); -} - -#endif - -static void alloc_objects(unsigned int cnt) -{ - struct object_entry_pool *b; - - b = xmalloc(sizeof(struct object_entry_pool) - + cnt * sizeof(struct object_entry)); - b->next_pool = blocks; - b->next_free = b->entries; - b->end = b->entries + cnt; - blocks = b; - alloc_count += cnt; -} - -static struct object_entry *new_object(struct object_id *oid) -{ - struct object_entry *e; - - if (blocks->next_free == blocks->end) - alloc_objects(object_entry_alloc); - - e = blocks->next_free++; - oidcpy(&e->idx.oid, oid); - return e; -} - -static struct object_entry *find_object(struct object_id *oid) -{ - return hashmap_get_entry_from_hash(&object_table, oidhash(oid), oid, - struct object_entry, ent); -} - -static struct object_entry *insert_object(struct object_id *oid) -{ - struct object_entry *e; - unsigned int hash = oidhash(oid); - - e = hashmap_get_entry_from_hash(&object_table, hash, oid, - struct object_entry, ent); - if (!e) { - e = new_object(oid); - e->idx.offset = 0; - hashmap_entry_init(&e->ent, hash); - hashmap_add(&object_table, &e->ent); - } - - return e; -} - -static void invalidate_pack_id(unsigned int id) -{ - unsigned long lu; - struct tag *t; - struct hashmap_iter iter; - struct object_entry *e; - - hashmap_for_each_entry(&object_table, &iter, e, ent) { - if (e->pack_id == id) - e->pack_id = MAX_PACK_ID; - } - - for (lu = 0; lu < branch_table_sz; lu++) { - struct branch *b; - - for (b = branch_table[lu]; b; b = b->table_next_branch) - if (b->pack_id == id) - b->pack_id = MAX_PACK_ID; - } - - for (t = first_tag; t; t = t->next_tag) - if (t->pack_id == id) - t->pack_id = MAX_PACK_ID; -} - -static unsigned int hc_str(const char *s, size_t len) -{ - unsigned int r = 0; - while (len-- > 0) - r = r * 31 + *s++; - return r; -} - -static void insert_mark(struct mark_set *s, uintmax_t idnum, struct object_entry *oe) -{ - while ((idnum >> s->shift) >= 1024) { - s = mem_pool_calloc(&fi_mem_pool, 1, sizeof(struct mark_set)); - s->shift = marks->shift + 10; - s->data.sets[0] = marks; - marks = s; - } - while (s->shift) { - uintmax_t i = idnum >> s->shift; - idnum -= i << s->shift; - if (!s->data.sets[i]) { - s->data.sets[i] = mem_pool_calloc(&fi_mem_pool, 1, sizeof(struct mark_set)); - s->data.sets[i]->shift = s->shift - 10; - } - s = s->data.sets[i]; - } - if (!s->data.marked[idnum]) - marks_set_count++; - s->data.marked[idnum] = oe; -} - -static void *find_mark(struct mark_set *s, uintmax_t idnum) -{ - uintmax_t orig_idnum = idnum; - struct object_entry *oe = NULL; - if ((idnum >> s->shift) < 1024) { - while (s && s->shift) { - uintmax_t i = idnum >> s->shift; - idnum -= i << s->shift; - s = s->data.sets[i]; - } - if (s) - oe = s->data.marked[idnum]; - } - if (!oe) - die("mark :%" PRIuMAX " not declared", orig_idnum); - return oe; -} - -static struct atom_str *to_atom(const char *s, unsigned short len) -{ - unsigned int hc = hc_str(s, len) % atom_table_sz; - struct atom_str *c; - - for (c = atom_table[hc]; c; c = c->next_atom) - if (c->str_len == len && !strncmp(s, c->str_dat, len)) - return c; - - c = mem_pool_alloc(&fi_mem_pool, sizeof(struct atom_str) + len + 1); - c->str_len = len; - memcpy(c->str_dat, s, len); - c->str_dat[len] = 0; - c->next_atom = atom_table[hc]; - atom_table[hc] = c; - atom_cnt++; - return c; -} - -static struct branch *lookup_branch(const char *name) -{ - unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz; - struct branch *b; - - for (b = branch_table[hc]; b; b = b->table_next_branch) - if (!strcmp(name, b->name)) - return b; - return NULL; -} - -static struct branch *new_branch(const char *name) -{ - unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz; - struct branch *b = lookup_branch(name); - - if (b) - die("Invalid attempt to create duplicate branch: %s", name); - if (check_refname_format(name, REFNAME_ALLOW_ONELEVEL)) - die("Branch name doesn't conform to GIT standards: %s", name); - - b = mem_pool_calloc(&fi_mem_pool, 1, sizeof(struct branch)); - b->name = mem_pool_strdup(&fi_mem_pool, name); - b->table_next_branch = branch_table[hc]; - b->branch_tree.versions[0].mode = S_IFDIR; - b->branch_tree.versions[1].mode = S_IFDIR; - b->num_notes = 0; - b->active = 0; - b->pack_id = MAX_PACK_ID; - branch_table[hc] = b; - branch_count++; - return b; -} - -static unsigned int hc_entries(unsigned int cnt) -{ - cnt = cnt & 7 ? (cnt / 8) + 1 : cnt / 8; - return cnt < avail_tree_table_sz ? cnt : avail_tree_table_sz - 1; -} - -static struct tree_content *new_tree_content(unsigned int cnt) -{ - struct avail_tree_content *f, *l = NULL; - struct tree_content *t; - unsigned int hc = hc_entries(cnt); - - for (f = avail_tree_table[hc]; f; l = f, f = f->next_avail) - if (f->entry_capacity >= cnt) - break; - - if (f) { - if (l) - l->next_avail = f->next_avail; - else - avail_tree_table[hc] = f->next_avail; - } else { - cnt = cnt & 7 ? ((cnt / 8) + 1) * 8 : cnt; - f = mem_pool_alloc(&fi_mem_pool, sizeof(*t) + sizeof(t->entries[0]) * cnt); - f->entry_capacity = cnt; - } - - t = (struct tree_content*)f; - t->entry_count = 0; - t->delta_depth = 0; - return t; -} - -static void release_tree_entry(struct tree_entry *e); -static void release_tree_content(struct tree_content *t) -{ - struct avail_tree_content *f = (struct avail_tree_content*)t; - unsigned int hc = hc_entries(f->entry_capacity); - f->next_avail = avail_tree_table[hc]; - avail_tree_table[hc] = f; -} - -static void release_tree_content_recursive(struct tree_content *t) -{ - unsigned int i; - for (i = 0; i < t->entry_count; i++) - release_tree_entry(t->entries[i]); - release_tree_content(t); -} - -static struct tree_content *grow_tree_content( - struct tree_content *t, - int amt) -{ - struct tree_content *r = new_tree_content(t->entry_count + amt); - r->entry_count = t->entry_count; - r->delta_depth = t->delta_depth; - COPY_ARRAY(r->entries, t->entries, t->entry_count); - release_tree_content(t); - return r; -} - -static struct tree_entry *new_tree_entry(void) -{ - struct tree_entry *e; - - if (!avail_tree_entry) { - unsigned int n = tree_entry_alloc; - tree_entry_allocd += n * sizeof(struct tree_entry); - ALLOC_ARRAY(e, n); - avail_tree_entry = e; - while (n-- > 1) { - *((void**)e) = e + 1; - e++; - } - *((void**)e) = NULL; - } - - e = avail_tree_entry; - avail_tree_entry = *((void**)e); - return e; -} - -static void release_tree_entry(struct tree_entry *e) -{ - if (e->tree) - release_tree_content_recursive(e->tree); - *((void**)e) = avail_tree_entry; - avail_tree_entry = e; -} - -static struct tree_content *dup_tree_content(struct tree_content *s) -{ - struct tree_content *d; - struct tree_entry *a, *b; - unsigned int i; - - if (!s) - return NULL; - d = new_tree_content(s->entry_count); - for (i = 0; i < s->entry_count; i++) { - a = s->entries[i]; - b = new_tree_entry(); - memcpy(b, a, sizeof(*a)); - if (a->tree && is_null_oid(&b->versions[1].oid)) - b->tree = dup_tree_content(a->tree); - else - b->tree = NULL; - d->entries[i] = b; - } - d->entry_count = s->entry_count; - d->delta_depth = s->delta_depth; - - return d; -} - -static void start_packfile(void) -{ - struct strbuf tmp_file = STRBUF_INIT; - struct packed_git *p; - int pack_fd; - - pack_fd = odb_mkstemp(&tmp_file, "pack/tmp_pack_XXXXXX"); - FLEX_ALLOC_STR(p, pack_name, tmp_file.buf); - strbuf_release(&tmp_file); - - p->pack_fd = pack_fd; - p->do_not_close = 1; - pack_file = hashfd(pack_fd, p->pack_name); - - pack_data = p; - pack_size = write_pack_header(pack_file, 0); - object_count = 0; - - REALLOC_ARRAY(all_packs, pack_id + 1); - all_packs[pack_id] = p; -} - -static const char *create_index(void) -{ - const char *tmpfile; - struct pack_idx_entry **idx, **c, **last; - struct object_entry *e; - struct object_entry_pool *o; - - /* Build the table of object IDs. */ - ALLOC_ARRAY(idx, object_count); - c = idx; - for (o = blocks; o; o = o->next_pool) - for (e = o->next_free; e-- != o->entries;) - if (pack_id == e->pack_id) - *c++ = &e->idx; - last = idx + object_count; - if (c != last) - die("internal consistency error creating the index"); - - tmpfile = write_idx_file(NULL, idx, object_count, &pack_idx_opts, - pack_data->hash); - free(idx); - return tmpfile; -} - -static char *keep_pack(const char *curr_index_name) -{ - static const char *keep_msg = "fast-import"; - struct strbuf name = STRBUF_INIT; - int keep_fd; - - odb_pack_name(&name, pack_data->hash, "keep"); - keep_fd = odb_pack_keep(name.buf); - if (keep_fd < 0) - die_errno("cannot create keep file"); - write_or_die(keep_fd, keep_msg, strlen(keep_msg)); - if (close(keep_fd)) - die_errno("failed to write keep file"); - - odb_pack_name(&name, pack_data->hash, "pack"); - if (finalize_object_file(pack_data->pack_name, name.buf)) - die("cannot store pack file"); - - odb_pack_name(&name, pack_data->hash, "idx"); - if (finalize_object_file(curr_index_name, name.buf)) - die("cannot store index file"); - free((void *)curr_index_name); - return strbuf_detach(&name, NULL); -} - -static void unkeep_all_packs(void) -{ - struct strbuf name = STRBUF_INIT; - int k; - - for (k = 0; k < pack_id; k++) { - struct packed_git *p = all_packs[k]; - odb_pack_name(&name, p->hash, "keep"); - unlink_or_warn(name.buf); - } - strbuf_release(&name); -} - -static int loosen_small_pack(const struct packed_git *p) -{ - struct child_process unpack = CHILD_PROCESS_INIT; - - if (lseek(p->pack_fd, 0, SEEK_SET) < 0) - die_errno("Failed seeking to start of '%s'", p->pack_name); - - unpack.in = p->pack_fd; - unpack.git_cmd = 1; - unpack.stdout_to_stderr = 1; - strvec_push(&unpack.args, "unpack-objects"); - if (!show_stats) - strvec_push(&unpack.args, "-q"); - - return run_command(&unpack); -} - -static void end_packfile(void) -{ - static int running; - - if (running || !pack_data) - return; - - running = 1; - clear_delta_base_cache(); - if (object_count) { - struct packed_git *new_p; - struct object_id cur_pack_oid; - char *idx_name; - int i; - struct branch *b; - struct tag *t; - - close_pack_windows(pack_data); - finalize_hashfile(pack_file, cur_pack_oid.hash, 0); - fixup_pack_header_footer(pack_data->pack_fd, pack_data->hash, - pack_data->pack_name, object_count, - cur_pack_oid.hash, pack_size); - - if (object_count <= unpack_limit) { - if (!loosen_small_pack(pack_data)) { - invalidate_pack_id(pack_id); - goto discard_pack; - } - } - - close(pack_data->pack_fd); - idx_name = keep_pack(create_index()); - - /* Register the packfile with core git's machinery. */ - new_p = add_packed_git(idx_name, strlen(idx_name), 1); - if (!new_p) - die("core git rejected index %s", idx_name); - all_packs[pack_id] = new_p; - install_packed_git(the_repository, new_p); - free(idx_name); - - /* Print the boundary */ - if (pack_edges) { - fprintf(pack_edges, "%s:", new_p->pack_name); - for (i = 0; i < branch_table_sz; i++) { - for (b = branch_table[i]; b; b = b->table_next_branch) { - if (b->pack_id == pack_id) - fprintf(pack_edges, " %s", - oid_to_hex(&b->oid)); - } - } - for (t = first_tag; t; t = t->next_tag) { - if (t->pack_id == pack_id) - fprintf(pack_edges, " %s", - oid_to_hex(&t->oid)); - } - fputc('\n', pack_edges); - fflush(pack_edges); - } - - pack_id++; - } - else { -discard_pack: - close(pack_data->pack_fd); - unlink_or_warn(pack_data->pack_name); - } - FREE_AND_NULL(pack_data); - running = 0; - - /* We can't carry a delta across packfiles. */ - strbuf_release(&last_blob.data); - last_blob.offset = 0; - last_blob.depth = 0; -} - -static void cycle_packfile(void) -{ - end_packfile(); - start_packfile(); -} - -static int store_object( - enum object_type type, - struct strbuf *dat, - struct last_object *last, - struct object_id *oidout, - uintmax_t mark) -{ - void *out, *delta; - struct object_entry *e; - unsigned char hdr[96]; - struct object_id oid; - unsigned long hdrlen, deltalen; - git_hash_ctx c; - git_zstream s; - - hdrlen = xsnprintf((char *)hdr, sizeof(hdr), "%s %lu", - type_name(type), (unsigned long)dat->len) + 1; - the_hash_algo->init_fn(&c); - the_hash_algo->update_fn(&c, hdr, hdrlen); - the_hash_algo->update_fn(&c, dat->buf, dat->len); - the_hash_algo->final_fn(oid.hash, &c); - if (oidout) - oidcpy(oidout, &oid); - - e = insert_object(&oid); - if (mark) - insert_mark(marks, mark, e); - if (e->idx.offset) { - duplicate_count_by_type[type]++; - return 1; - } else if (find_sha1_pack(oid.hash, - get_all_packs(the_repository))) { - e->type = type; - e->pack_id = MAX_PACK_ID; - e->idx.offset = 1; /* just not zero! */ - duplicate_count_by_type[type]++; - return 1; - } - - if (last && last->data.len && last->data.buf && last->depth < max_depth - && dat->len > the_hash_algo->rawsz) { - - delta_count_attempts_by_type[type]++; - delta = diff_delta(last->data.buf, last->data.len, - dat->buf, dat->len, - &deltalen, dat->len - the_hash_algo->rawsz); - } else - delta = NULL; - - git_deflate_init(&s, pack_compression_level); - if (delta) { - s.next_in = delta; - s.avail_in = deltalen; - } else { - s.next_in = (void *)dat->buf; - s.avail_in = dat->len; - } - s.avail_out = git_deflate_bound(&s, s.avail_in); - s.next_out = out = xmalloc(s.avail_out); - while (git_deflate(&s, Z_FINISH) == Z_OK) - ; /* nothing */ - git_deflate_end(&s); - - /* Determine if we should auto-checkpoint. */ - if ((max_packsize - && (pack_size + PACK_SIZE_THRESHOLD + s.total_out) > max_packsize) - || (pack_size + PACK_SIZE_THRESHOLD + s.total_out) < pack_size) { - - /* This new object needs to *not* have the current pack_id. */ - e->pack_id = pack_id + 1; - cycle_packfile(); - - /* We cannot carry a delta into the new pack. */ - if (delta) { - FREE_AND_NULL(delta); - - git_deflate_init(&s, pack_compression_level); - s.next_in = (void *)dat->buf; - s.avail_in = dat->len; - s.avail_out = git_deflate_bound(&s, s.avail_in); - s.next_out = out = xrealloc(out, s.avail_out); - while (git_deflate(&s, Z_FINISH) == Z_OK) - ; /* nothing */ - git_deflate_end(&s); - } - } - - e->type = type; - e->pack_id = pack_id; - e->idx.offset = pack_size; - object_count++; - object_count_by_type[type]++; - - crc32_begin(pack_file); - - if (delta) { - off_t ofs = e->idx.offset - last->offset; - unsigned pos = sizeof(hdr) - 1; - - delta_count_by_type[type]++; - e->depth = last->depth + 1; - - hdrlen = encode_in_pack_object_header(hdr, sizeof(hdr), - OBJ_OFS_DELTA, deltalen); - hashwrite(pack_file, hdr, hdrlen); - pack_size += hdrlen; - - hdr[pos] = ofs & 127; - while (ofs >>= 7) - hdr[--pos] = 128 | (--ofs & 127); - hashwrite(pack_file, hdr + pos, sizeof(hdr) - pos); - pack_size += sizeof(hdr) - pos; - } else { - e->depth = 0; - hdrlen = encode_in_pack_object_header(hdr, sizeof(hdr), - type, dat->len); - hashwrite(pack_file, hdr, hdrlen); - pack_size += hdrlen; - } - - hashwrite(pack_file, out, s.total_out); - pack_size += s.total_out; - - e->idx.crc32 = crc32_end(pack_file); - - free(out); - free(delta); - if (last) { - if (last->no_swap) { - last->data = *dat; - } else { - strbuf_swap(&last->data, dat); - } - last->offset = e->idx.offset; - last->depth = e->depth; - } - return 0; -} - -static void truncate_pack(struct hashfile_checkpoint *checkpoint) -{ - if (hashfile_truncate(pack_file, checkpoint)) - die_errno("cannot truncate pack to skip duplicate"); - pack_size = checkpoint->offset; -} - -static void stream_blob(uintmax_t len, struct object_id *oidout, uintmax_t mark) -{ - size_t in_sz = 64 * 1024, out_sz = 64 * 1024; - unsigned char *in_buf = xmalloc(in_sz); - unsigned char *out_buf = xmalloc(out_sz); - struct object_entry *e; - struct object_id oid; - unsigned long hdrlen; - off_t offset; - git_hash_ctx c; - git_zstream s; - struct hashfile_checkpoint checkpoint; - int status = Z_OK; - - /* Determine if we should auto-checkpoint. */ - if ((max_packsize - && (pack_size + PACK_SIZE_THRESHOLD + len) > max_packsize) - || (pack_size + PACK_SIZE_THRESHOLD + len) < pack_size) - cycle_packfile(); - - hashfile_checkpoint(pack_file, &checkpoint); - offset = checkpoint.offset; - - hdrlen = xsnprintf((char *)out_buf, out_sz, "blob %" PRIuMAX, len) + 1; - - the_hash_algo->init_fn(&c); - the_hash_algo->update_fn(&c, out_buf, hdrlen); - - crc32_begin(pack_file); - - git_deflate_init(&s, pack_compression_level); - - hdrlen = encode_in_pack_object_header(out_buf, out_sz, OBJ_BLOB, len); - - s.next_out = out_buf + hdrlen; - s.avail_out = out_sz - hdrlen; - - while (status != Z_STREAM_END) { - if (0 < len && !s.avail_in) { - size_t cnt = in_sz < len ? in_sz : (size_t)len; - size_t n = fread(in_buf, 1, cnt, stdin); - if (!n && feof(stdin)) - die("EOF in data (%" PRIuMAX " bytes remaining)", len); - - the_hash_algo->update_fn(&c, in_buf, n); - s.next_in = in_buf; - s.avail_in = n; - len -= n; - } - - status = git_deflate(&s, len ? 0 : Z_FINISH); - - if (!s.avail_out || status == Z_STREAM_END) { - size_t n = s.next_out - out_buf; - hashwrite(pack_file, out_buf, n); - pack_size += n; - s.next_out = out_buf; - s.avail_out = out_sz; - } - - switch (status) { - case Z_OK: - case Z_BUF_ERROR: - case Z_STREAM_END: - continue; - default: - die("unexpected deflate failure: %d", status); - } - } - git_deflate_end(&s); - the_hash_algo->final_fn(oid.hash, &c); - - if (oidout) - oidcpy(oidout, &oid); - - e = insert_object(&oid); - - if (mark) - insert_mark(marks, mark, e); - - if (e->idx.offset) { - duplicate_count_by_type[OBJ_BLOB]++; - truncate_pack(&checkpoint); - - } else if (find_sha1_pack(oid.hash, - get_all_packs(the_repository))) { - e->type = OBJ_BLOB; - e->pack_id = MAX_PACK_ID; - e->idx.offset = 1; /* just not zero! */ - duplicate_count_by_type[OBJ_BLOB]++; - truncate_pack(&checkpoint); - - } else { - e->depth = 0; - e->type = OBJ_BLOB; - e->pack_id = pack_id; - e->idx.offset = offset; - e->idx.crc32 = crc32_end(pack_file); - object_count++; - object_count_by_type[OBJ_BLOB]++; - } - - free(in_buf); - free(out_buf); -} - -/* All calls must be guarded by find_object() or find_mark() to - * ensure the 'struct object_entry' passed was written by this - * process instance. We unpack the entry by the offset, avoiding - * the need for the corresponding .idx file. This unpacking rule - * works because we only use OBJ_REF_DELTA within the packfiles - * created by fast-import. - * - * oe must not be NULL. Such an oe usually comes from giving - * an unknown SHA-1 to find_object() or an undefined mark to - * find_mark(). Callers must test for this condition and use - * the standard read_sha1_file() when it happens. - * - * oe->pack_id must not be MAX_PACK_ID. Such an oe is usually from - * find_mark(), where the mark was reloaded from an existing marks - * file and is referencing an object that this fast-import process - * instance did not write out to a packfile. Callers must test for - * this condition and use read_sha1_file() instead. - */ -static void *gfi_unpack_entry( - struct object_entry *oe, - unsigned long *sizep) -{ - enum object_type type; - struct packed_git *p = all_packs[oe->pack_id]; - if (p == pack_data && p->pack_size < (pack_size + the_hash_algo->rawsz)) { - /* The object is stored in the packfile we are writing to - * and we have modified it since the last time we scanned - * back to read a previously written object. If an old - * window covered [p->pack_size, p->pack_size + rawsz) its - * data is stale and is not valid. Closing all windows - * and updating the packfile length ensures we can read - * the newly written data. - */ - close_pack_windows(p); - hashflush(pack_file); - - /* We have to offer rawsz bytes additional on the end of - * the packfile as the core unpacker code assumes the - * footer is present at the file end and must promise - * at least rawsz bytes within any window it maps. But - * we don't actually create the footer here. - */ - p->pack_size = pack_size + the_hash_algo->rawsz; - } - return unpack_entry(the_repository, p, oe->idx.offset, &type, sizep); -} - -static const char *get_mode(const char *str, uint16_t *modep) -{ - unsigned char c; - uint16_t mode = 0; - - while ((c = *str++) != ' ') { - if (c < '0' || c > '7') - return NULL; - mode = (mode << 3) + (c - '0'); - } - *modep = mode; - return str; -} - -static void load_tree(struct tree_entry *root) -{ - struct object_id *oid = &root->versions[1].oid; - struct object_entry *myoe; - struct tree_content *t; - unsigned long size; - char *buf; - const char *c; - - root->tree = t = new_tree_content(8); - if (is_null_oid(oid)) - return; - - myoe = find_object(oid); - if (myoe && myoe->pack_id != MAX_PACK_ID) { - if (myoe->type != OBJ_TREE) - die("Not a tree: %s", oid_to_hex(oid)); - t->delta_depth = myoe->depth; - buf = gfi_unpack_entry(myoe, &size); - if (!buf) - die("Can't load tree %s", oid_to_hex(oid)); - } else { - enum object_type type; - buf = read_object_file(oid, &type, &size); - if (!buf || type != OBJ_TREE) - die("Can't load tree %s", oid_to_hex(oid)); - } - - c = buf; - while (c != (buf + size)) { - struct tree_entry *e = new_tree_entry(); - - if (t->entry_count == t->entry_capacity) - root->tree = t = grow_tree_content(t, t->entry_count); - t->entries[t->entry_count++] = e; - - e->tree = NULL; - c = get_mode(c, &e->versions[1].mode); - if (!c) - die("Corrupt mode in %s", oid_to_hex(oid)); - e->versions[0].mode = e->versions[1].mode; - e->name = to_atom(c, strlen(c)); - c += e->name->str_len + 1; - hashcpy(e->versions[0].oid.hash, (unsigned char *)c); - hashcpy(e->versions[1].oid.hash, (unsigned char *)c); - c += the_hash_algo->rawsz; - } - free(buf); -} - -static int tecmp0 (const void *_a, const void *_b) -{ - struct tree_entry *a = *((struct tree_entry**)_a); - struct tree_entry *b = *((struct tree_entry**)_b); - return base_name_compare( - a->name->str_dat, a->name->str_len, a->versions[0].mode, - b->name->str_dat, b->name->str_len, b->versions[0].mode); -} - -static int tecmp1 (const void *_a, const void *_b) -{ - struct tree_entry *a = *((struct tree_entry**)_a); - struct tree_entry *b = *((struct tree_entry**)_b); - return base_name_compare( - a->name->str_dat, a->name->str_len, a->versions[1].mode, - b->name->str_dat, b->name->str_len, b->versions[1].mode); -} - -static void mktree(struct tree_content *t, int v, struct strbuf *b) -{ - size_t maxlen = 0; - unsigned int i; - - if (!v) - QSORT(t->entries, t->entry_count, tecmp0); - else - QSORT(t->entries, t->entry_count, tecmp1); - - for (i = 0; i < t->entry_count; i++) { - if (t->entries[i]->versions[v].mode) - maxlen += t->entries[i]->name->str_len + 34; - } - - strbuf_reset(b); - strbuf_grow(b, maxlen); - for (i = 0; i < t->entry_count; i++) { - struct tree_entry *e = t->entries[i]; - if (!e->versions[v].mode) - continue; - strbuf_addf(b, "%o %s%c", - (unsigned int)(e->versions[v].mode & ~NO_DELTA), - e->name->str_dat, '\0'); - strbuf_add(b, e->versions[v].oid.hash, the_hash_algo->rawsz); - } -} - -static void store_tree(struct tree_entry *root) -{ - struct tree_content *t; - unsigned int i, j, del; - struct last_object lo = { STRBUF_INIT, 0, 0, /* no_swap */ 1 }; - struct object_entry *le = NULL; - - if (!is_null_oid(&root->versions[1].oid)) - return; - - if (!root->tree) - load_tree(root); - t = root->tree; - - for (i = 0; i < t->entry_count; i++) { - if (t->entries[i]->tree) - store_tree(t->entries[i]); - } - - if (!(root->versions[0].mode & NO_DELTA)) - le = find_object(&root->versions[0].oid); - if (S_ISDIR(root->versions[0].mode) && le && le->pack_id == pack_id) { - mktree(t, 0, &old_tree); - lo.data = old_tree; - lo.offset = le->idx.offset; - lo.depth = t->delta_depth; - } - - mktree(t, 1, &new_tree); - store_object(OBJ_TREE, &new_tree, &lo, &root->versions[1].oid, 0); - - t->delta_depth = lo.depth; - for (i = 0, j = 0, del = 0; i < t->entry_count; i++) { - struct tree_entry *e = t->entries[i]; - if (e->versions[1].mode) { - e->versions[0].mode = e->versions[1].mode; - oidcpy(&e->versions[0].oid, &e->versions[1].oid); - t->entries[j++] = e; - } else { - release_tree_entry(e); - del++; - } - } - t->entry_count -= del; -} - -static void tree_content_replace( - struct tree_entry *root, - const struct object_id *oid, - const uint16_t mode, - struct tree_content *newtree) -{ - if (!S_ISDIR(mode)) - die("Root cannot be a non-directory"); - oidclr(&root->versions[0].oid); - oidcpy(&root->versions[1].oid, oid); - if (root->tree) - release_tree_content_recursive(root->tree); - root->tree = newtree; -} - -static int tree_content_set( - struct tree_entry *root, - const char *p, - const struct object_id *oid, - const uint16_t mode, - struct tree_content *subtree) -{ - struct tree_content *t; - const char *slash1; - unsigned int i, n; - struct tree_entry *e; - - slash1 = strchrnul(p, '/'); - n = slash1 - p; - if (!n) - die("Empty path component found in input"); - if (!*slash1 && !S_ISDIR(mode) && subtree) - die("Non-directories cannot have subtrees"); - - if (!root->tree) - load_tree(root); - t = root->tree; - for (i = 0; i < t->entry_count; i++) { - e = t->entries[i]; - if (e->name->str_len == n && !fspathncmp(p, e->name->str_dat, n)) { - if (!*slash1) { - if (!S_ISDIR(mode) - && e->versions[1].mode == mode - && oideq(&e->versions[1].oid, oid)) - return 0; - e->versions[1].mode = mode; - oidcpy(&e->versions[1].oid, oid); - if (e->tree) - release_tree_content_recursive(e->tree); - e->tree = subtree; - - /* - * We need to leave e->versions[0].sha1 alone - * to avoid modifying the preimage tree used - * when writing out the parent directory. - * But after replacing the subdir with a - * completely different one, it's not a good - * delta base any more, and besides, we've - * thrown away the tree entries needed to - * make a delta against it. - * - * So let's just explicitly disable deltas - * for the subtree. - */ - if (S_ISDIR(e->versions[0].mode)) - e->versions[0].mode |= NO_DELTA; - - oidclr(&root->versions[1].oid); - return 1; - } - if (!S_ISDIR(e->versions[1].mode)) { - e->tree = new_tree_content(8); - e->versions[1].mode = S_IFDIR; - } - if (!e->tree) - load_tree(e); - if (tree_content_set(e, slash1 + 1, oid, mode, subtree)) { - oidclr(&root->versions[1].oid); - return 1; - } - return 0; - } - } - - if (t->entry_count == t->entry_capacity) - root->tree = t = grow_tree_content(t, t->entry_count); - e = new_tree_entry(); - e->name = to_atom(p, n); - e->versions[0].mode = 0; - oidclr(&e->versions[0].oid); - t->entries[t->entry_count++] = e; - if (*slash1) { - e->tree = new_tree_content(8); - e->versions[1].mode = S_IFDIR; - tree_content_set(e, slash1 + 1, oid, mode, subtree); - } else { - e->tree = subtree; - e->versions[1].mode = mode; - oidcpy(&e->versions[1].oid, oid); - } - oidclr(&root->versions[1].oid); - return 1; -} - -static int tree_content_remove( - struct tree_entry *root, - const char *p, - struct tree_entry *backup_leaf, - int allow_root) -{ - struct tree_content *t; - const char *slash1; - unsigned int i, n; - struct tree_entry *e; - - slash1 = strchrnul(p, '/'); - n = slash1 - p; - - if (!root->tree) - load_tree(root); - - if (!*p && allow_root) { - e = root; - goto del_entry; - } - - t = root->tree; - for (i = 0; i < t->entry_count; i++) { - e = t->entries[i]; - if (e->name->str_len == n && !fspathncmp(p, e->name->str_dat, n)) { - if (*slash1 && !S_ISDIR(e->versions[1].mode)) - /* - * If p names a file in some subdirectory, and a - * file or symlink matching the name of the - * parent directory of p exists, then p cannot - * exist and need not be deleted. - */ - return 1; - if (!*slash1 || !S_ISDIR(e->versions[1].mode)) - goto del_entry; - if (!e->tree) - load_tree(e); - if (tree_content_remove(e, slash1 + 1, backup_leaf, 0)) { - for (n = 0; n < e->tree->entry_count; n++) { - if (e->tree->entries[n]->versions[1].mode) { - oidclr(&root->versions[1].oid); - return 1; - } - } - backup_leaf = NULL; - goto del_entry; - } - return 0; - } - } - return 0; - -del_entry: - if (backup_leaf) - memcpy(backup_leaf, e, sizeof(*backup_leaf)); - else if (e->tree) - release_tree_content_recursive(e->tree); - e->tree = NULL; - e->versions[1].mode = 0; - oidclr(&e->versions[1].oid); - oidclr(&root->versions[1].oid); - return 1; -} - -static int tree_content_get( - struct tree_entry *root, - const char *p, - struct tree_entry *leaf, - int allow_root) -{ - struct tree_content *t; - const char *slash1; - unsigned int i, n; - struct tree_entry *e; - - slash1 = strchrnul(p, '/'); - n = slash1 - p; - if (!n && !allow_root) - die("Empty path component found in input"); - - if (!root->tree) - load_tree(root); - - if (!n) { - e = root; - goto found_entry; - } - - t = root->tree; - for (i = 0; i < t->entry_count; i++) { - e = t->entries[i]; - if (e->name->str_len == n && !fspathncmp(p, e->name->str_dat, n)) { - if (!*slash1) - goto found_entry; - if (!S_ISDIR(e->versions[1].mode)) - return 0; - if (!e->tree) - load_tree(e); - return tree_content_get(e, slash1 + 1, leaf, 0); - } - } - return 0; - -found_entry: - memcpy(leaf, e, sizeof(*leaf)); - if (e->tree && is_null_oid(&e->versions[1].oid)) - leaf->tree = dup_tree_content(e->tree); - else - leaf->tree = NULL; - return 1; -} - -static int update_branch(struct branch *b) -{ - static const char *msg = "fast-import"; - struct ref_transaction *transaction; - struct object_id old_oid; - struct strbuf err = STRBUF_INIT; - - if (is_null_oid(&b->oid)) { - if (b->delete) - delete_ref(NULL, b->name, NULL, 0); - return 0; - } - if (read_ref(b->name, &old_oid)) - oidclr(&old_oid); - if (!force_update && !is_null_oid(&old_oid)) { - struct commit *old_cmit, *new_cmit; - - old_cmit = lookup_commit_reference_gently(the_repository, - &old_oid, 0); - new_cmit = lookup_commit_reference_gently(the_repository, - &b->oid, 0); - if (!old_cmit || !new_cmit) - return error("Branch %s is missing commits.", b->name); - - if (!in_merge_bases(old_cmit, new_cmit)) { - warning("Not updating %s" - " (new tip %s does not contain %s)", - b->name, oid_to_hex(&b->oid), - oid_to_hex(&old_oid)); - return -1; - } - } - transaction = ref_transaction_begin(&err); - if (!transaction || - ref_transaction_update(transaction, b->name, &b->oid, &old_oid, - 0, msg, &err) || - ref_transaction_commit(transaction, &err)) { - ref_transaction_free(transaction); - error("%s", err.buf); - strbuf_release(&err); - return -1; - } - ref_transaction_free(transaction); - strbuf_release(&err); - return 0; -} - -static void dump_branches(void) -{ - unsigned int i; - struct branch *b; - - for (i = 0; i < branch_table_sz; i++) { - for (b = branch_table[i]; b; b = b->table_next_branch) - failure |= update_branch(b); - } -} - -static void dump_tags(void) -{ - static const char *msg = "fast-import"; - struct tag *t; - struct strbuf ref_name = STRBUF_INIT; - struct strbuf err = STRBUF_INIT; - struct ref_transaction *transaction; - - transaction = ref_transaction_begin(&err); - if (!transaction) { - failure |= error("%s", err.buf); - goto cleanup; - } - for (t = first_tag; t; t = t->next_tag) { - strbuf_reset(&ref_name); - strbuf_addf(&ref_name, "refs/tags/%s", t->name); - - if (ref_transaction_update(transaction, ref_name.buf, - &t->oid, NULL, 0, msg, &err)) { - failure |= error("%s", err.buf); - goto cleanup; - } - } - if (ref_transaction_commit(transaction, &err)) - failure |= error("%s", err.buf); - - cleanup: - ref_transaction_free(transaction); - strbuf_release(&ref_name); - strbuf_release(&err); -} - -static void dump_marks(void) -{ - struct lock_file mark_lock = LOCK_INIT; - FILE *f; - - if (!export_marks_file || (import_marks_file && !import_marks_file_done)) - return; - - if (safe_create_leading_directories_const(export_marks_file)) { - failure |= error_errno("unable to create leading directories of %s", - export_marks_file); - return; - } - - if (hold_lock_file_for_update(&mark_lock, export_marks_file, 0) < 0) { - failure |= error_errno("Unable to write marks file %s", - export_marks_file); - return; - } - - f = fdopen_lock_file(&mark_lock, "w"); - if (!f) { - int saved_errno = errno; - rollback_lock_file(&mark_lock); - failure |= error("Unable to write marks file %s: %s", - export_marks_file, strerror(saved_errno)); - return; - } - - for_each_mark(marks, 0, dump_marks_fn, f); - if (commit_lock_file(&mark_lock)) { - failure |= error_errno("Unable to write file %s", - export_marks_file); - return; - } -} - -static void insert_object_entry(struct mark_set *s, struct object_id *oid, uintmax_t mark) -{ - struct object_entry *e; - e = find_object(oid); - if (!e) { - enum object_type type = oid_object_info(the_repository, - oid, NULL); - if (type < 0) - die("object not found: %s", oid_to_hex(oid)); - e = insert_object(oid); - e->type = type; - e->pack_id = MAX_PACK_ID; - e->idx.offset = 1; /* just not zero! */ - } - insert_mark(s, mark, e); -} - -static void insert_oid_entry(struct mark_set *s, struct object_id *oid, uintmax_t mark) -{ - insert_mark(s, mark, xmemdupz(oid, sizeof(*oid))); -} - -static void read_mark_file(struct mark_set *s, FILE *f, mark_set_inserter_t inserter) -{ - char line[512]; - while (fgets(line, sizeof(line), f)) { - uintmax_t mark; - char *end; - struct object_id oid; - - /* Ensure SHA-1 objects are padded with zeros. */ - memset(oid.hash, 0, sizeof(oid.hash)); - - end = strchr(line, '\n'); - if (line[0] != ':' || !end) - die("corrupt mark line: %s", line); - *end = 0; - mark = strtoumax(line + 1, &end, 10); - if (!mark || end == line + 1 - || *end != ' ' - || get_oid_hex_any(end + 1, &oid) == GIT_HASH_UNKNOWN) - die("corrupt mark line: %s", line); - inserter(s, &oid, mark); - } -} - -static void read_marks(void) -{ - FILE *f = fopen(import_marks_file, "r"); - if (f) - ; - else if (import_marks_file_ignore_missing && errno == ENOENT) - goto done; /* Marks file does not exist */ - else - die_errno("cannot read '%s'", import_marks_file); - read_mark_file(marks, f, insert_object_entry); - fclose(f); -done: - import_marks_file_done = 1; -} - - -static int read_next_command(void) -{ - static int stdin_eof = 0; - - if (stdin_eof) { - unread_command_buf = 0; - return EOF; - } - - for (;;) { - if (unread_command_buf) { - unread_command_buf = 0; - } else { - struct recent_command *rc; - - stdin_eof = strbuf_getline_lf(&command_buf, stdin); - if (stdin_eof) - return EOF; - - if (!seen_data_command - && !starts_with(command_buf.buf, "feature ") - && !starts_with(command_buf.buf, "option ")) { - parse_argv(); - } - - rc = rc_free; - if (rc) - rc_free = rc->next; - else { - rc = cmd_hist.next; - cmd_hist.next = rc->next; - cmd_hist.next->prev = &cmd_hist; - free(rc->buf); - } - - rc->buf = xstrdup(command_buf.buf); - rc->prev = cmd_tail; - rc->next = cmd_hist.prev; - rc->prev->next = rc; - cmd_tail = rc; - } - if (command_buf.buf[0] == '#') - continue; - return 0; - } -} - -static void skip_optional_lf(void) -{ - int term_char = fgetc(stdin); - if (term_char != '\n' && term_char != EOF) - ungetc(term_char, stdin); -} - -static void parse_mark(void) -{ - const char *v; - if (skip_prefix(command_buf.buf, "mark :", &v)) { - next_mark = strtoumax(v, NULL, 10); - read_next_command(); - } - else - next_mark = 0; -} - -static void parse_original_identifier(void) -{ - const char *v; - if (skip_prefix(command_buf.buf, "original-oid ", &v)) - read_next_command(); -} - -static int parse_data(struct strbuf *sb, uintmax_t limit, uintmax_t *len_res) -{ - const char *data; - strbuf_reset(sb); - - if (!skip_prefix(command_buf.buf, "data ", &data)) - die("Expected 'data n' command, found: %s", command_buf.buf); - - if (skip_prefix(data, "<<", &data)) { - char *term = xstrdup(data); - size_t term_len = command_buf.len - (data - command_buf.buf); - - for (;;) { - if (strbuf_getline_lf(&command_buf, stdin) == EOF) - die("EOF in data (terminator '%s' not found)", term); - if (term_len == command_buf.len - && !strcmp(term, command_buf.buf)) - break; - strbuf_addbuf(sb, &command_buf); - strbuf_addch(sb, '\n'); - } - free(term); - } - else { - uintmax_t len = strtoumax(data, NULL, 10); - size_t n = 0, length = (size_t)len; - - if (limit && limit < len) { - *len_res = len; - return 0; - } - if (length < len) - die("data is too large to use in this context"); - - while (n < length) { - size_t s = strbuf_fread(sb, length - n, stdin); - if (!s && feof(stdin)) - die("EOF in data (%lu bytes remaining)", - (unsigned long)(length - n)); - n += s; - } - } - - skip_optional_lf(); - return 1; -} - -static int validate_raw_date(const char *src, struct strbuf *result, int strict) -{ - const char *orig_src = src; - char *endp; - unsigned long num; - - errno = 0; - - num = strtoul(src, &endp, 10); - /* - * NEEDSWORK: perhaps check for reasonable values? For example, we - * could error on values representing times more than a - * day in the future. - */ - if (errno || endp == src || *endp != ' ') - return -1; - - src = endp + 1; - if (*src != '-' && *src != '+') - return -1; - - num = strtoul(src + 1, &endp, 10); - /* - * NEEDSWORK: check for brokenness other than num > 1400, such as - * (num % 100) >= 60, or ((num % 100) % 15) != 0 ? - */ - if (errno || endp == src + 1 || *endp || /* did not parse */ - (strict && (1400 < num)) /* parsed a broken timezone */ - ) - return -1; - - strbuf_addstr(result, orig_src); - return 0; -} - -static char *parse_ident(const char *buf) -{ - const char *ltgt; - size_t name_len; - struct strbuf ident = STRBUF_INIT; - - /* ensure there is a space delimiter even if there is no name */ - if (*buf == '<') - --buf; - - ltgt = buf + strcspn(buf, "<>"); - if (*ltgt != '<') - die("Missing < in ident string: %s", buf); - if (ltgt != buf && ltgt[-1] != ' ') - die("Missing space before < in ident string: %s", buf); - ltgt = ltgt + 1 + strcspn(ltgt + 1, "<>"); - if (*ltgt != '>') - die("Missing > in ident string: %s", buf); - ltgt++; - if (*ltgt != ' ') - die("Missing space after > in ident string: %s", buf); - ltgt++; - name_len = ltgt - buf; - strbuf_add(&ident, buf, name_len); - - switch (whenspec) { - case WHENSPEC_RAW: - if (validate_raw_date(ltgt, &ident, 1) < 0) - die("Invalid raw date \"%s\" in ident: %s", ltgt, buf); - break; - case WHENSPEC_RAW_PERMISSIVE: - if (validate_raw_date(ltgt, &ident, 0) < 0) - die("Invalid raw date \"%s\" in ident: %s", ltgt, buf); - break; - case WHENSPEC_RFC2822: - if (parse_date(ltgt, &ident) < 0) - die("Invalid rfc2822 date \"%s\" in ident: %s", ltgt, buf); - break; - case WHENSPEC_NOW: - if (strcmp("now", ltgt)) - die("Date in ident must be 'now': %s", buf); - datestamp(&ident); - break; - } - - return strbuf_detach(&ident, NULL); -} - -static void parse_and_store_blob( - struct last_object *last, - struct object_id *oidout, - uintmax_t mark) -{ - static struct strbuf buf = STRBUF_INIT; - uintmax_t len; - - if (parse_data(&buf, big_file_threshold, &len)) - store_object(OBJ_BLOB, &buf, last, oidout, mark); - else { - if (last) { - strbuf_release(&last->data); - last->offset = 0; - last->depth = 0; - } - stream_blob(len, oidout, mark); - skip_optional_lf(); - } -} - -static void parse_new_blob(void) -{ - read_next_command(); - parse_mark(); - parse_original_identifier(); - parse_and_store_blob(&last_blob, NULL, next_mark); -} - -static void unload_one_branch(void) -{ - while (cur_active_branches - && cur_active_branches >= max_active_branches) { - uintmax_t min_commit = ULONG_MAX; - struct branch *e, *l = NULL, *p = NULL; - - for (e = active_branches; e; e = e->active_next_branch) { - if (e->last_commit < min_commit) { - p = l; - min_commit = e->last_commit; - } - l = e; - } - - if (p) { - e = p->active_next_branch; - p->active_next_branch = e->active_next_branch; - } else { - e = active_branches; - active_branches = e->active_next_branch; - } - e->active = 0; - e->active_next_branch = NULL; - if (e->branch_tree.tree) { - release_tree_content_recursive(e->branch_tree.tree); - e->branch_tree.tree = NULL; - } - cur_active_branches--; - } -} - -static void load_branch(struct branch *b) -{ - load_tree(&b->branch_tree); - if (!b->active) { - b->active = 1; - b->active_next_branch = active_branches; - active_branches = b; - cur_active_branches++; - branch_load_count++; - } -} - -static unsigned char convert_num_notes_to_fanout(uintmax_t num_notes) -{ - unsigned char fanout = 0; - while ((num_notes >>= 8)) - fanout++; - return fanout; -} - -static void construct_path_with_fanout(const char *hex_sha1, - unsigned char fanout, char *path) -{ - unsigned int i = 0, j = 0; - if (fanout >= the_hash_algo->rawsz) - die("Too large fanout (%u)", fanout); - while (fanout) { - path[i++] = hex_sha1[j++]; - path[i++] = hex_sha1[j++]; - path[i++] = '/'; - fanout--; - } - memcpy(path + i, hex_sha1 + j, the_hash_algo->hexsz - j); - path[i + the_hash_algo->hexsz - j] = '\0'; -} - -static uintmax_t do_change_note_fanout( - struct tree_entry *orig_root, struct tree_entry *root, - char *hex_oid, unsigned int hex_oid_len, - char *fullpath, unsigned int fullpath_len, - unsigned char fanout) -{ - struct tree_content *t; - struct tree_entry *e, leaf; - unsigned int i, tmp_hex_oid_len, tmp_fullpath_len; - uintmax_t num_notes = 0; - struct object_id oid; - /* hex oid + '/' between each pair of hex digits + NUL */ - char realpath[GIT_MAX_HEXSZ + ((GIT_MAX_HEXSZ / 2) - 1) + 1]; - const unsigned hexsz = the_hash_algo->hexsz; - - if (!root->tree) - load_tree(root); - t = root->tree; - - for (i = 0; t && i < t->entry_count; i++) { - e = t->entries[i]; - tmp_hex_oid_len = hex_oid_len + e->name->str_len; - tmp_fullpath_len = fullpath_len; - - /* - * We're interested in EITHER existing note entries (entries - * with exactly 40 hex chars in path, not including directory - * separators), OR directory entries that may contain note - * entries (with < 40 hex chars in path). - * Also, each path component in a note entry must be a multiple - * of 2 chars. - */ - if (!e->versions[1].mode || - tmp_hex_oid_len > hexsz || - e->name->str_len % 2) - continue; - - /* This _may_ be a note entry, or a subdir containing notes */ - memcpy(hex_oid + hex_oid_len, e->name->str_dat, - e->name->str_len); - if (tmp_fullpath_len) - fullpath[tmp_fullpath_len++] = '/'; - memcpy(fullpath + tmp_fullpath_len, e->name->str_dat, - e->name->str_len); - tmp_fullpath_len += e->name->str_len; - fullpath[tmp_fullpath_len] = '\0'; - - if (tmp_hex_oid_len == hexsz && !get_oid_hex(hex_oid, &oid)) { - /* This is a note entry */ - if (fanout == 0xff) { - /* Counting mode, no rename */ - num_notes++; - continue; - } - construct_path_with_fanout(hex_oid, fanout, realpath); - if (!strcmp(fullpath, realpath)) { - /* Note entry is in correct location */ - num_notes++; - continue; - } - - /* Rename fullpath to realpath */ - if (!tree_content_remove(orig_root, fullpath, &leaf, 0)) - die("Failed to remove path %s", fullpath); - tree_content_set(orig_root, realpath, - &leaf.versions[1].oid, - leaf.versions[1].mode, - leaf.tree); - } else if (S_ISDIR(e->versions[1].mode)) { - /* This is a subdir that may contain note entries */ - num_notes += do_change_note_fanout(orig_root, e, - hex_oid, tmp_hex_oid_len, - fullpath, tmp_fullpath_len, fanout); - } - - /* The above may have reallocated the current tree_content */ - t = root->tree; - } - return num_notes; -} - -static uintmax_t change_note_fanout(struct tree_entry *root, - unsigned char fanout) -{ - /* - * The size of path is due to one slash between every two hex digits, - * plus the terminating NUL. Note that there is no slash at the end, so - * the number of slashes is one less than half the number of hex - * characters. - */ - char hex_oid[GIT_MAX_HEXSZ], path[GIT_MAX_HEXSZ + (GIT_MAX_HEXSZ / 2) - 1 + 1]; - return do_change_note_fanout(root, root, hex_oid, 0, path, 0, fanout); -} - -static int parse_mapped_oid_hex(const char *hex, struct object_id *oid, const char **end) -{ - int algo; - khiter_t it; - - /* Make SHA-1 object IDs have all-zero padding. */ - memset(oid->hash, 0, sizeof(oid->hash)); - - algo = parse_oid_hex_any(hex, oid, end); - if (algo == GIT_HASH_UNKNOWN) - return -1; - - it = kh_get_oid_map(sub_oid_map, *oid); - /* No such object? */ - if (it == kh_end(sub_oid_map)) { - /* If we're using the same algorithm, pass it through. */ - if (hash_algos[algo].format_id == the_hash_algo->format_id) - return 0; - return -1; - } - oidcpy(oid, kh_value(sub_oid_map, it)); - return 0; -} - -/* - * Given a pointer into a string, parse a mark reference: - * - * idnum ::= ':' bigint; - * - * Return the first character after the value in *endptr. - * - * Complain if the following character is not what is expected, - * either a space or end of the string. - */ -static uintmax_t parse_mark_ref(const char *p, char **endptr) -{ - uintmax_t mark; - - assert(*p == ':'); - p++; - mark = strtoumax(p, endptr, 10); - if (*endptr == p) - die("No value after ':' in mark: %s", command_buf.buf); - return mark; -} - -/* - * Parse the mark reference, and complain if this is not the end of - * the string. - */ -static uintmax_t parse_mark_ref_eol(const char *p) -{ - char *end; - uintmax_t mark; - - mark = parse_mark_ref(p, &end); - if (*end != '\0') - die("Garbage after mark: %s", command_buf.buf); - return mark; -} - -/* - * Parse the mark reference, demanding a trailing space. Return a - * pointer to the space. - */ -static uintmax_t parse_mark_ref_space(const char **p) -{ - uintmax_t mark; - char *end; - - mark = parse_mark_ref(*p, &end); - if (*end++ != ' ') - die("Missing space after mark: %s", command_buf.buf); - *p = end; - return mark; -} - -static void file_change_m(const char *p, struct branch *b) -{ - static struct strbuf uq = STRBUF_INIT; - const char *endp; - struct object_entry *oe; - struct object_id oid; - uint16_t mode, inline_data = 0; - - p = get_mode(p, &mode); - if (!p) - die("Corrupt mode: %s", command_buf.buf); - switch (mode) { - case 0644: - case 0755: - mode |= S_IFREG; - case S_IFREG | 0644: - case S_IFREG | 0755: - case S_IFLNK: - case S_IFDIR: - case S_IFGITLINK: - /* ok */ - break; - default: - die("Corrupt mode: %s", command_buf.buf); - } - - if (*p == ':') { - oe = find_mark(marks, parse_mark_ref_space(&p)); - oidcpy(&oid, &oe->idx.oid); - } else if (skip_prefix(p, "inline ", &p)) { - inline_data = 1; - oe = NULL; /* not used with inline_data, but makes gcc happy */ - } else { - if (parse_mapped_oid_hex(p, &oid, &p)) - die("Invalid dataref: %s", command_buf.buf); - oe = find_object(&oid); - if (*p++ != ' ') - die("Missing space after SHA1: %s", command_buf.buf); - } - - strbuf_reset(&uq); - if (!unquote_c_style(&uq, p, &endp)) { - if (*endp) - die("Garbage after path in: %s", command_buf.buf); - p = uq.buf; - } - - /* Git does not track empty, non-toplevel directories. */ - if (S_ISDIR(mode) && is_empty_tree_oid(&oid) && *p) { - tree_content_remove(&b->branch_tree, p, NULL, 0); - return; - } - - if (S_ISGITLINK(mode)) { - if (inline_data) - die("Git links cannot be specified 'inline': %s", - command_buf.buf); - else if (oe) { - if (oe->type != OBJ_COMMIT) - die("Not a commit (actually a %s): %s", - type_name(oe->type), command_buf.buf); - } - /* - * Accept the sha1 without checking; it expected to be in - * another repository. - */ - } else if (inline_data) { - if (S_ISDIR(mode)) - die("Directories cannot be specified 'inline': %s", - command_buf.buf); - if (p != uq.buf) { - strbuf_addstr(&uq, p); - p = uq.buf; - } - while (read_next_command() != EOF) { - const char *v; - if (skip_prefix(command_buf.buf, "cat-blob ", &v)) - parse_cat_blob(v); - else { - parse_and_store_blob(&last_blob, &oid, 0); - break; - } - } - } else { - enum object_type expected = S_ISDIR(mode) ? - OBJ_TREE: OBJ_BLOB; - enum object_type type = oe ? oe->type : - oid_object_info(the_repository, &oid, - NULL); - if (type < 0) - die("%s not found: %s", - S_ISDIR(mode) ? "Tree" : "Blob", - command_buf.buf); - if (type != expected) - die("Not a %s (actually a %s): %s", - type_name(expected), type_name(type), - command_buf.buf); - } - - if (!*p) { - tree_content_replace(&b->branch_tree, &oid, mode, NULL); - return; - } - tree_content_set(&b->branch_tree, p, &oid, mode, NULL); -} - -static void file_change_d(const char *p, struct branch *b) -{ - static struct strbuf uq = STRBUF_INIT; - const char *endp; - - strbuf_reset(&uq); - if (!unquote_c_style(&uq, p, &endp)) { - if (*endp) - die("Garbage after path in: %s", command_buf.buf); - p = uq.buf; - } - tree_content_remove(&b->branch_tree, p, NULL, 1); -} - -static void file_change_cr(const char *s, struct branch *b, int rename) -{ - const char *d; - static struct strbuf s_uq = STRBUF_INIT; - static struct strbuf d_uq = STRBUF_INIT; - const char *endp; - struct tree_entry leaf; - - strbuf_reset(&s_uq); - if (!unquote_c_style(&s_uq, s, &endp)) { - if (*endp != ' ') - die("Missing space after source: %s", command_buf.buf); - } else { - endp = strchr(s, ' '); - if (!endp) - die("Missing space after source: %s", command_buf.buf); - strbuf_add(&s_uq, s, endp - s); - } - s = s_uq.buf; - - endp++; - if (!*endp) - die("Missing dest: %s", command_buf.buf); - - d = endp; - strbuf_reset(&d_uq); - if (!unquote_c_style(&d_uq, d, &endp)) { - if (*endp) - die("Garbage after dest in: %s", command_buf.buf); - d = d_uq.buf; - } - - memset(&leaf, 0, sizeof(leaf)); - if (rename) - tree_content_remove(&b->branch_tree, s, &leaf, 1); - else - tree_content_get(&b->branch_tree, s, &leaf, 1); - if (!leaf.versions[1].mode) - die("Path %s not in branch", s); - if (!*d) { /* C "path/to/subdir" "" */ - tree_content_replace(&b->branch_tree, - &leaf.versions[1].oid, - leaf.versions[1].mode, - leaf.tree); - return; - } - tree_content_set(&b->branch_tree, d, - &leaf.versions[1].oid, - leaf.versions[1].mode, - leaf.tree); -} - -static void note_change_n(const char *p, struct branch *b, unsigned char *old_fanout) -{ - static struct strbuf uq = STRBUF_INIT; - struct object_entry *oe; - struct branch *s; - struct object_id oid, commit_oid; - char path[GIT_MAX_RAWSZ * 3]; - uint16_t inline_data = 0; - unsigned char new_fanout; - - /* - * When loading a branch, we don't traverse its tree to count the real - * number of notes (too expensive to do this for all non-note refs). - * This means that recently loaded notes refs might incorrectly have - * b->num_notes == 0, and consequently, old_fanout might be wrong. - * - * Fix this by traversing the tree and counting the number of notes - * when b->num_notes == 0. If the notes tree is truly empty, the - * calculation should not take long. - */ - if (b->num_notes == 0 && *old_fanout == 0) { - /* Invoke change_note_fanout() in "counting mode". */ - b->num_notes = change_note_fanout(&b->branch_tree, 0xff); - *old_fanout = convert_num_notes_to_fanout(b->num_notes); - } - - /* Now parse the notemodify command. */ - /* <dataref> or 'inline' */ - if (*p == ':') { - oe = find_mark(marks, parse_mark_ref_space(&p)); - oidcpy(&oid, &oe->idx.oid); - } else if (skip_prefix(p, "inline ", &p)) { - inline_data = 1; - oe = NULL; /* not used with inline_data, but makes gcc happy */ - } else { - if (parse_mapped_oid_hex(p, &oid, &p)) - die("Invalid dataref: %s", command_buf.buf); - oe = find_object(&oid); - if (*p++ != ' ') - die("Missing space after SHA1: %s", command_buf.buf); - } - - /* <commit-ish> */ - s = lookup_branch(p); - if (s) { - if (is_null_oid(&s->oid)) - die("Can't add a note on empty branch."); - oidcpy(&commit_oid, &s->oid); - } else if (*p == ':') { - uintmax_t commit_mark = parse_mark_ref_eol(p); - struct object_entry *commit_oe = find_mark(marks, commit_mark); - if (commit_oe->type != OBJ_COMMIT) - die("Mark :%" PRIuMAX " not a commit", commit_mark); - oidcpy(&commit_oid, &commit_oe->idx.oid); - } else if (!get_oid(p, &commit_oid)) { - unsigned long size; - char *buf = read_object_with_reference(the_repository, - &commit_oid, - commit_type, &size, - &commit_oid); - if (!buf || size < the_hash_algo->hexsz + 6) - die("Not a valid commit: %s", p); - free(buf); - } else - die("Invalid ref name or SHA1 expression: %s", p); - - if (inline_data) { - if (p != uq.buf) { - strbuf_addstr(&uq, p); - p = uq.buf; - } - read_next_command(); - parse_and_store_blob(&last_blob, &oid, 0); - } else if (oe) { - if (oe->type != OBJ_BLOB) - die("Not a blob (actually a %s): %s", - type_name(oe->type), command_buf.buf); - } else if (!is_null_oid(&oid)) { - enum object_type type = oid_object_info(the_repository, &oid, - NULL); - if (type < 0) - die("Blob not found: %s", command_buf.buf); - if (type != OBJ_BLOB) - die("Not a blob (actually a %s): %s", - type_name(type), command_buf.buf); - } - - construct_path_with_fanout(oid_to_hex(&commit_oid), *old_fanout, path); - if (tree_content_remove(&b->branch_tree, path, NULL, 0)) - b->num_notes--; - - if (is_null_oid(&oid)) - return; /* nothing to insert */ - - b->num_notes++; - new_fanout = convert_num_notes_to_fanout(b->num_notes); - construct_path_with_fanout(oid_to_hex(&commit_oid), new_fanout, path); - tree_content_set(&b->branch_tree, path, &oid, S_IFREG | 0644, NULL); -} - -static void file_change_deleteall(struct branch *b) -{ - release_tree_content_recursive(b->branch_tree.tree); - oidclr(&b->branch_tree.versions[0].oid); - oidclr(&b->branch_tree.versions[1].oid); - load_tree(&b->branch_tree); - b->num_notes = 0; -} - -static void parse_from_commit(struct branch *b, char *buf, unsigned long size) -{ - if (!buf || size < the_hash_algo->hexsz + 6) - die("Not a valid commit: %s", oid_to_hex(&b->oid)); - if (memcmp("tree ", buf, 5) - || get_oid_hex(buf + 5, &b->branch_tree.versions[1].oid)) - die("The commit %s is corrupt", oid_to_hex(&b->oid)); - oidcpy(&b->branch_tree.versions[0].oid, - &b->branch_tree.versions[1].oid); -} - -static void parse_from_existing(struct branch *b) -{ - if (is_null_oid(&b->oid)) { - oidclr(&b->branch_tree.versions[0].oid); - oidclr(&b->branch_tree.versions[1].oid); - } else { - unsigned long size; - char *buf; - - buf = read_object_with_reference(the_repository, - &b->oid, commit_type, &size, - &b->oid); - parse_from_commit(b, buf, size); - free(buf); - } -} - -static int parse_objectish(struct branch *b, const char *objectish) -{ - struct branch *s; - struct object_id oid; - - oidcpy(&oid, &b->branch_tree.versions[1].oid); - - s = lookup_branch(objectish); - if (b == s) - die("Can't create a branch from itself: %s", b->name); - else if (s) { - struct object_id *t = &s->branch_tree.versions[1].oid; - oidcpy(&b->oid, &s->oid); - oidcpy(&b->branch_tree.versions[0].oid, t); - oidcpy(&b->branch_tree.versions[1].oid, t); - } else if (*objectish == ':') { - uintmax_t idnum = parse_mark_ref_eol(objectish); - struct object_entry *oe = find_mark(marks, idnum); - if (oe->type != OBJ_COMMIT) - die("Mark :%" PRIuMAX " not a commit", idnum); - if (!oideq(&b->oid, &oe->idx.oid)) { - oidcpy(&b->oid, &oe->idx.oid); - if (oe->pack_id != MAX_PACK_ID) { - unsigned long size; - char *buf = gfi_unpack_entry(oe, &size); - parse_from_commit(b, buf, size); - free(buf); - } else - parse_from_existing(b); - } - } else if (!get_oid(objectish, &b->oid)) { - parse_from_existing(b); - if (is_null_oid(&b->oid)) - b->delete = 1; - } - else - die("Invalid ref name or SHA1 expression: %s", objectish); - - if (b->branch_tree.tree && !oideq(&oid, &b->branch_tree.versions[1].oid)) { - release_tree_content_recursive(b->branch_tree.tree); - b->branch_tree.tree = NULL; - } - - read_next_command(); - return 1; -} - -static int parse_from(struct branch *b) -{ - const char *from; - - if (!skip_prefix(command_buf.buf, "from ", &from)) - return 0; - - return parse_objectish(b, from); -} - -static int parse_objectish_with_prefix(struct branch *b, const char *prefix) -{ - const char *base; - - if (!skip_prefix(command_buf.buf, prefix, &base)) - return 0; - - return parse_objectish(b, base); -} - -static struct hash_list *parse_merge(unsigned int *count) -{ - struct hash_list *list = NULL, **tail = &list, *n; - const char *from; - struct branch *s; - - *count = 0; - while (skip_prefix(command_buf.buf, "merge ", &from)) { - n = xmalloc(sizeof(*n)); - s = lookup_branch(from); - if (s) - oidcpy(&n->oid, &s->oid); - else if (*from == ':') { - uintmax_t idnum = parse_mark_ref_eol(from); - struct object_entry *oe = find_mark(marks, idnum); - if (oe->type != OBJ_COMMIT) - die("Mark :%" PRIuMAX " not a commit", idnum); - oidcpy(&n->oid, &oe->idx.oid); - } else if (!get_oid(from, &n->oid)) { - unsigned long size; - char *buf = read_object_with_reference(the_repository, - &n->oid, - commit_type, - &size, &n->oid); - if (!buf || size < the_hash_algo->hexsz + 6) - die("Not a valid commit: %s", from); - free(buf); - } else - die("Invalid ref name or SHA1 expression: %s", from); - - n->next = NULL; - *tail = n; - tail = &n->next; - - (*count)++; - read_next_command(); - } - return list; -} - -static void parse_new_commit(const char *arg) -{ - static struct strbuf msg = STRBUF_INIT; - struct branch *b; - char *author = NULL; - char *committer = NULL; - char *encoding = NULL; - struct hash_list *merge_list = NULL; - unsigned int merge_count; - unsigned char prev_fanout, new_fanout; - const char *v; - - b = lookup_branch(arg); - if (!b) - b = new_branch(arg); - - read_next_command(); - parse_mark(); - parse_original_identifier(); - if (skip_prefix(command_buf.buf, "author ", &v)) { - author = parse_ident(v); - read_next_command(); - } - if (skip_prefix(command_buf.buf, "committer ", &v)) { - committer = parse_ident(v); - read_next_command(); - } - if (!committer) - die("Expected committer but didn't get one"); - if (skip_prefix(command_buf.buf, "encoding ", &v)) { - encoding = xstrdup(v); - read_next_command(); - } - parse_data(&msg, 0, NULL); - read_next_command(); - parse_from(b); - merge_list = parse_merge(&merge_count); - - /* ensure the branch is active/loaded */ - if (!b->branch_tree.tree || !max_active_branches) { - unload_one_branch(); - load_branch(b); - } - - prev_fanout = convert_num_notes_to_fanout(b->num_notes); - - /* file_change* */ - while (command_buf.len > 0) { - if (skip_prefix(command_buf.buf, "M ", &v)) - file_change_m(v, b); - else if (skip_prefix(command_buf.buf, "D ", &v)) - file_change_d(v, b); - else if (skip_prefix(command_buf.buf, "R ", &v)) - file_change_cr(v, b, 1); - else if (skip_prefix(command_buf.buf, "C ", &v)) - file_change_cr(v, b, 0); - else if (skip_prefix(command_buf.buf, "N ", &v)) - note_change_n(v, b, &prev_fanout); - else if (!strcmp("deleteall", command_buf.buf)) - file_change_deleteall(b); - else if (skip_prefix(command_buf.buf, "ls ", &v)) - parse_ls(v, b); - else if (skip_prefix(command_buf.buf, "cat-blob ", &v)) - parse_cat_blob(v); - else { - unread_command_buf = 1; - break; - } - if (read_next_command() == EOF) - break; - } - - new_fanout = convert_num_notes_to_fanout(b->num_notes); - if (new_fanout != prev_fanout) - b->num_notes = change_note_fanout(&b->branch_tree, new_fanout); - - /* build the tree and the commit */ - store_tree(&b->branch_tree); - oidcpy(&b->branch_tree.versions[0].oid, - &b->branch_tree.versions[1].oid); - - strbuf_reset(&new_data); - strbuf_addf(&new_data, "tree %s\n", - oid_to_hex(&b->branch_tree.versions[1].oid)); - if (!is_null_oid(&b->oid)) - strbuf_addf(&new_data, "parent %s\n", - oid_to_hex(&b->oid)); - while (merge_list) { - struct hash_list *next = merge_list->next; - strbuf_addf(&new_data, "parent %s\n", - oid_to_hex(&merge_list->oid)); - free(merge_list); - merge_list = next; - } - strbuf_addf(&new_data, - "author %s\n" - "committer %s\n", - author ? author : committer, committer); - if (encoding) - strbuf_addf(&new_data, - "encoding %s\n", - encoding); - strbuf_addch(&new_data, '\n'); - strbuf_addbuf(&new_data, &msg); - free(author); - free(committer); - free(encoding); - - if (!store_object(OBJ_COMMIT, &new_data, NULL, &b->oid, next_mark)) - b->pack_id = pack_id; - b->last_commit = object_count_by_type[OBJ_COMMIT]; -} - -static void parse_new_tag(const char *arg) -{ - static struct strbuf msg = STRBUF_INIT; - const char *from; - char *tagger; - struct branch *s; - struct tag *t; - uintmax_t from_mark = 0; - struct object_id oid; - enum object_type type; - const char *v; - - t = mem_pool_alloc(&fi_mem_pool, sizeof(struct tag)); - memset(t, 0, sizeof(struct tag)); - t->name = mem_pool_strdup(&fi_mem_pool, arg); - if (last_tag) - last_tag->next_tag = t; - else - first_tag = t; - last_tag = t; - read_next_command(); - parse_mark(); - - /* from ... */ - if (!skip_prefix(command_buf.buf, "from ", &from)) - die("Expected from command, got %s", command_buf.buf); - s = lookup_branch(from); - if (s) { - if (is_null_oid(&s->oid)) - die("Can't tag an empty branch."); - oidcpy(&oid, &s->oid); - type = OBJ_COMMIT; - } else if (*from == ':') { - struct object_entry *oe; - from_mark = parse_mark_ref_eol(from); - oe = find_mark(marks, from_mark); - type = oe->type; - oidcpy(&oid, &oe->idx.oid); - } else if (!get_oid(from, &oid)) { - struct object_entry *oe = find_object(&oid); - if (!oe) { - type = oid_object_info(the_repository, &oid, NULL); - if (type < 0) - die("Not a valid object: %s", from); - } else - type = oe->type; - } else - die("Invalid ref name or SHA1 expression: %s", from); - read_next_command(); - - /* original-oid ... */ - parse_original_identifier(); - - /* tagger ... */ - if (skip_prefix(command_buf.buf, "tagger ", &v)) { - tagger = parse_ident(v); - read_next_command(); - } else - tagger = NULL; - - /* tag payload/message */ - parse_data(&msg, 0, NULL); - - /* build the tag object */ - strbuf_reset(&new_data); - - strbuf_addf(&new_data, - "object %s\n" - "type %s\n" - "tag %s\n", - oid_to_hex(&oid), type_name(type), t->name); - if (tagger) - strbuf_addf(&new_data, - "tagger %s\n", tagger); - strbuf_addch(&new_data, '\n'); - strbuf_addbuf(&new_data, &msg); - free(tagger); - - if (store_object(OBJ_TAG, &new_data, NULL, &t->oid, next_mark)) - t->pack_id = MAX_PACK_ID; - else - t->pack_id = pack_id; -} - -static void parse_reset_branch(const char *arg) -{ - struct branch *b; - const char *tag_name; - - b = lookup_branch(arg); - if (b) { - oidclr(&b->oid); - oidclr(&b->branch_tree.versions[0].oid); - oidclr(&b->branch_tree.versions[1].oid); - if (b->branch_tree.tree) { - release_tree_content_recursive(b->branch_tree.tree); - b->branch_tree.tree = NULL; - } - } - else - b = new_branch(arg); - read_next_command(); - parse_from(b); - if (b->delete && skip_prefix(b->name, "refs/tags/", &tag_name)) { - /* - * Elsewhere, we call dump_branches() before dump_tags(), - * and dump_branches() will handle ref deletions first, so - * in order to make sure the deletion actually takes effect, - * we need to remove the tag from our list of tags to update. - * - * NEEDSWORK: replace list of tags with hashmap for faster - * deletion? - */ - struct tag *t, *prev = NULL; - for (t = first_tag; t; t = t->next_tag) { - if (!strcmp(t->name, tag_name)) - break; - prev = t; - } - if (t) { - if (prev) - prev->next_tag = t->next_tag; - else - first_tag = t->next_tag; - if (!t->next_tag) - last_tag = prev; - /* There is no mem_pool_free(t) function to call. */ - } - } - if (command_buf.len > 0) - unread_command_buf = 1; -} - -static void cat_blob_write(const char *buf, unsigned long size) -{ - if (write_in_full(cat_blob_fd, buf, size) < 0) - die_errno("Write to frontend failed"); -} - -static void cat_blob(struct object_entry *oe, struct object_id *oid) -{ - struct strbuf line = STRBUF_INIT; - unsigned long size; - enum object_type type = 0; - char *buf; - - if (!oe || oe->pack_id == MAX_PACK_ID) { - buf = read_object_file(oid, &type, &size); - } else { - type = oe->type; - buf = gfi_unpack_entry(oe, &size); - } - - /* - * Output based on batch_one_object() from cat-file.c. - */ - if (type <= 0) { - strbuf_reset(&line); - strbuf_addf(&line, "%s missing\n", oid_to_hex(oid)); - cat_blob_write(line.buf, line.len); - strbuf_release(&line); - free(buf); - return; - } - if (!buf) - die("Can't read object %s", oid_to_hex(oid)); - if (type != OBJ_BLOB) - die("Object %s is a %s but a blob was expected.", - oid_to_hex(oid), type_name(type)); - strbuf_reset(&line); - strbuf_addf(&line, "%s %s %"PRIuMAX"\n", oid_to_hex(oid), - type_name(type), (uintmax_t)size); - cat_blob_write(line.buf, line.len); - strbuf_release(&line); - cat_blob_write(buf, size); - cat_blob_write("\n", 1); - if (oe && oe->pack_id == pack_id) { - last_blob.offset = oe->idx.offset; - strbuf_attach(&last_blob.data, buf, size, size); - last_blob.depth = oe->depth; - } else - free(buf); -} - -static void parse_get_mark(const char *p) -{ - struct object_entry *oe; - char output[GIT_MAX_HEXSZ + 2]; - - /* get-mark SP <object> LF */ - if (*p != ':') - die("Not a mark: %s", p); - - oe = find_mark(marks, parse_mark_ref_eol(p)); - if (!oe) - die("Unknown mark: %s", command_buf.buf); - - xsnprintf(output, sizeof(output), "%s\n", oid_to_hex(&oe->idx.oid)); - cat_blob_write(output, the_hash_algo->hexsz + 1); -} - -static void parse_cat_blob(const char *p) -{ - struct object_entry *oe; - struct object_id oid; - - /* cat-blob SP <object> LF */ - if (*p == ':') { - oe = find_mark(marks, parse_mark_ref_eol(p)); - if (!oe) - die("Unknown mark: %s", command_buf.buf); - oidcpy(&oid, &oe->idx.oid); - } else { - if (parse_mapped_oid_hex(p, &oid, &p)) - die("Invalid dataref: %s", command_buf.buf); - if (*p) - die("Garbage after SHA1: %s", command_buf.buf); - oe = find_object(&oid); - } - - cat_blob(oe, &oid); -} - -static struct object_entry *dereference(struct object_entry *oe, - struct object_id *oid) -{ - unsigned long size; - char *buf = NULL; - const unsigned hexsz = the_hash_algo->hexsz; - - if (!oe) { - enum object_type type = oid_object_info(the_repository, oid, - NULL); - if (type < 0) - die("object not found: %s", oid_to_hex(oid)); - /* cache it! */ - oe = insert_object(oid); - oe->type = type; - oe->pack_id = MAX_PACK_ID; - oe->idx.offset = 1; - } - switch (oe->type) { - case OBJ_TREE: /* easy case. */ - return oe; - case OBJ_COMMIT: - case OBJ_TAG: - break; - default: - die("Not a tree-ish: %s", command_buf.buf); - } - - if (oe->pack_id != MAX_PACK_ID) { /* in a pack being written */ - buf = gfi_unpack_entry(oe, &size); - } else { - enum object_type unused; - buf = read_object_file(oid, &unused, &size); - } - if (!buf) - die("Can't load object %s", oid_to_hex(oid)); - - /* Peel one layer. */ - switch (oe->type) { - case OBJ_TAG: - if (size < hexsz + strlen("object ") || - get_oid_hex(buf + strlen("object "), oid)) - die("Invalid SHA1 in tag: %s", command_buf.buf); - break; - case OBJ_COMMIT: - if (size < hexsz + strlen("tree ") || - get_oid_hex(buf + strlen("tree "), oid)) - die("Invalid SHA1 in commit: %s", command_buf.buf); - } - - free(buf); - return find_object(oid); -} - -static void insert_mapped_mark(uintmax_t mark, void *object, void *cbp) -{ - struct object_id *fromoid = object; - struct object_id *tooid = find_mark(cbp, mark); - int ret; - khiter_t it; - - it = kh_put_oid_map(sub_oid_map, *fromoid, &ret); - /* We've already seen this object. */ - if (ret == 0) - return; - kh_value(sub_oid_map, it) = tooid; -} - -static void build_mark_map_one(struct mark_set *from, struct mark_set *to) -{ - for_each_mark(from, 0, insert_mapped_mark, to); -} - -static void build_mark_map(struct string_list *from, struct string_list *to) -{ - struct string_list_item *fromp, *top; - - sub_oid_map = kh_init_oid_map(); - - for_each_string_list_item(fromp, from) { - top = string_list_lookup(to, fromp->string); - if (!fromp->util) { - die(_("Missing from marks for submodule '%s'"), fromp->string); - } else if (!top || !top->util) { - die(_("Missing to marks for submodule '%s'"), fromp->string); - } - build_mark_map_one(fromp->util, top->util); - } -} - -static struct object_entry *parse_treeish_dataref(const char **p) -{ - struct object_id oid; - struct object_entry *e; - - if (**p == ':') { /* <mark> */ - e = find_mark(marks, parse_mark_ref_space(p)); - if (!e) - die("Unknown mark: %s", command_buf.buf); - oidcpy(&oid, &e->idx.oid); - } else { /* <sha1> */ - if (parse_mapped_oid_hex(*p, &oid, p)) - die("Invalid dataref: %s", command_buf.buf); - e = find_object(&oid); - if (*(*p)++ != ' ') - die("Missing space after tree-ish: %s", command_buf.buf); - } - - while (!e || e->type != OBJ_TREE) - e = dereference(e, &oid); - return e; -} - -static void print_ls(int mode, const unsigned char *hash, const char *path) -{ - static struct strbuf line = STRBUF_INIT; - - /* See show_tree(). */ - const char *type = - S_ISGITLINK(mode) ? commit_type : - S_ISDIR(mode) ? tree_type : - blob_type; - - if (!mode) { - /* missing SP path LF */ - strbuf_reset(&line); - strbuf_addstr(&line, "missing "); - quote_c_style(path, &line, NULL, 0); - strbuf_addch(&line, '\n'); - } else { - /* mode SP type SP object_name TAB path LF */ - strbuf_reset(&line); - strbuf_addf(&line, "%06o %s %s\t", - mode & ~NO_DELTA, type, hash_to_hex(hash)); - quote_c_style(path, &line, NULL, 0); - strbuf_addch(&line, '\n'); - } - cat_blob_write(line.buf, line.len); -} - -static void parse_ls(const char *p, struct branch *b) -{ - struct tree_entry *root = NULL; - struct tree_entry leaf = {NULL}; - - /* ls SP (<tree-ish> SP)? <path> */ - if (*p == '"') { - if (!b) - die("Not in a commit: %s", command_buf.buf); - root = &b->branch_tree; - } else { - struct object_entry *e = parse_treeish_dataref(&p); - root = new_tree_entry(); - oidcpy(&root->versions[1].oid, &e->idx.oid); - if (!is_null_oid(&root->versions[1].oid)) - root->versions[1].mode = S_IFDIR; - load_tree(root); - } - if (*p == '"') { - static struct strbuf uq = STRBUF_INIT; - const char *endp; - strbuf_reset(&uq); - if (unquote_c_style(&uq, p, &endp)) - die("Invalid path: %s", command_buf.buf); - if (*endp) - die("Garbage after path in: %s", command_buf.buf); - p = uq.buf; - } - tree_content_get(root, p, &leaf, 1); - /* - * A directory in preparation would have a sha1 of zero - * until it is saved. Save, for simplicity. - */ - if (S_ISDIR(leaf.versions[1].mode)) - store_tree(&leaf); - - print_ls(leaf.versions[1].mode, leaf.versions[1].oid.hash, p); - if (leaf.tree) - release_tree_content_recursive(leaf.tree); - if (!b || root != &b->branch_tree) - release_tree_entry(root); -} - -static void checkpoint(void) -{ - checkpoint_requested = 0; - if (object_count) { - cycle_packfile(); - } - dump_branches(); - dump_tags(); - dump_marks(); -} - -static void parse_checkpoint(void) -{ - checkpoint_requested = 1; - skip_optional_lf(); -} - -static void parse_progress(void) -{ - fwrite(command_buf.buf, 1, command_buf.len, stdout); - fputc('\n', stdout); - fflush(stdout); - skip_optional_lf(); -} - -static void parse_alias(void) -{ - struct object_entry *e; - struct branch b; - - skip_optional_lf(); - read_next_command(); - - /* mark ... */ - parse_mark(); - if (!next_mark) - die(_("Expected 'mark' command, got %s"), command_buf.buf); - - /* to ... */ - memset(&b, 0, sizeof(b)); - if (!parse_objectish_with_prefix(&b, "to ")) - die(_("Expected 'to' command, got %s"), command_buf.buf); - e = find_object(&b.oid); - assert(e); - insert_mark(marks, next_mark, e); -} - -static char* make_fast_import_path(const char *path) -{ - if (!relative_marks_paths || is_absolute_path(path)) - return xstrdup(path); - return git_pathdup("info/fast-import/%s", path); -} - -static void option_import_marks(const char *marks, - int from_stream, int ignore_missing) -{ - if (import_marks_file) { - if (from_stream) - die("Only one import-marks command allowed per stream"); - - /* read previous mark file */ - if(!import_marks_file_from_stream) - read_marks(); - } - - import_marks_file = make_fast_import_path(marks); - import_marks_file_from_stream = from_stream; - import_marks_file_ignore_missing = ignore_missing; -} - -static void option_date_format(const char *fmt) -{ - if (!strcmp(fmt, "raw")) - whenspec = WHENSPEC_RAW; - else if (!strcmp(fmt, "raw-permissive")) - whenspec = WHENSPEC_RAW_PERMISSIVE; - else if (!strcmp(fmt, "rfc2822")) - whenspec = WHENSPEC_RFC2822; - else if (!strcmp(fmt, "now")) - whenspec = WHENSPEC_NOW; - else - die("unknown --date-format argument %s", fmt); -} - -static unsigned long ulong_arg(const char *option, const char *arg) -{ - char *endptr; - unsigned long rv = strtoul(arg, &endptr, 0); - if (strchr(arg, '-') || endptr == arg || *endptr) - die("%s: argument must be a non-negative integer", option); - return rv; -} - -static void option_depth(const char *depth) -{ - max_depth = ulong_arg("--depth", depth); - if (max_depth > MAX_DEPTH) - die("--depth cannot exceed %u", MAX_DEPTH); -} - -static void option_active_branches(const char *branches) -{ - max_active_branches = ulong_arg("--active-branches", branches); -} - -static void option_export_marks(const char *marks) -{ - export_marks_file = make_fast_import_path(marks); -} - -static void option_cat_blob_fd(const char *fd) -{ - unsigned long n = ulong_arg("--cat-blob-fd", fd); - if (n > (unsigned long) INT_MAX) - die("--cat-blob-fd cannot exceed %d", INT_MAX); - cat_blob_fd = (int) n; -} - -static void option_export_pack_edges(const char *edges) -{ - if (pack_edges) - fclose(pack_edges); - pack_edges = xfopen(edges, "a"); -} - -static void option_rewrite_submodules(const char *arg, struct string_list *list) -{ - struct mark_set *ms; - FILE *fp; - char *s = xstrdup(arg); - char *f = strchr(s, ':'); - if (!f) - die(_("Expected format name:filename for submodule rewrite option")); - *f = '\0'; - f++; - ms = xcalloc(1, sizeof(*ms)); - string_list_insert(list, s)->util = ms; - - fp = fopen(f, "r"); - if (!fp) - die_errno("cannot read '%s'", f); - read_mark_file(ms, fp, insert_oid_entry); - fclose(fp); -} - -static int parse_one_option(const char *option) -{ - if (skip_prefix(option, "max-pack-size=", &option)) { - unsigned long v; - if (!git_parse_ulong(option, &v)) - return 0; - if (v < 8192) { - warning("max-pack-size is now in bytes, assuming --max-pack-size=%lum", v); - v *= 1024 * 1024; - } else if (v < 1024 * 1024) { - warning("minimum max-pack-size is 1 MiB"); - v = 1024 * 1024; - } - max_packsize = v; - } else if (skip_prefix(option, "big-file-threshold=", &option)) { - unsigned long v; - if (!git_parse_ulong(option, &v)) - return 0; - big_file_threshold = v; - } else if (skip_prefix(option, "depth=", &option)) { - option_depth(option); - } else if (skip_prefix(option, "active-branches=", &option)) { - option_active_branches(option); - } else if (skip_prefix(option, "export-pack-edges=", &option)) { - option_export_pack_edges(option); - } else if (!strcmp(option, "quiet")) { - show_stats = 0; - } else if (!strcmp(option, "stats")) { - show_stats = 1; - } else if (!strcmp(option, "allow-unsafe-features")) { - ; /* already handled during early option parsing */ - } else { - return 0; - } - - return 1; -} - -static void check_unsafe_feature(const char *feature, int from_stream) -{ - if (from_stream && !allow_unsafe_features) - die(_("feature '%s' forbidden in input without --allow-unsafe-features"), - feature); -} - -static int parse_one_feature(const char *feature, int from_stream) -{ - const char *arg; - - if (skip_prefix(feature, "date-format=", &arg)) { - option_date_format(arg); - } else if (skip_prefix(feature, "import-marks=", &arg)) { - check_unsafe_feature("import-marks", from_stream); - option_import_marks(arg, from_stream, 0); - } else if (skip_prefix(feature, "import-marks-if-exists=", &arg)) { - check_unsafe_feature("import-marks-if-exists", from_stream); - option_import_marks(arg, from_stream, 1); - } else if (skip_prefix(feature, "export-marks=", &arg)) { - check_unsafe_feature(feature, from_stream); - option_export_marks(arg); - } else if (!strcmp(feature, "alias")) { - ; /* Don't die - this feature is supported */ - } else if (skip_prefix(feature, "rewrite-submodules-to=", &arg)) { - option_rewrite_submodules(arg, &sub_marks_to); - } else if (skip_prefix(feature, "rewrite-submodules-from=", &arg)) { - option_rewrite_submodules(arg, &sub_marks_from); - } else if (skip_prefix(feature, "rewrite-submodules-from=", &arg)) { - } else if (!strcmp(feature, "get-mark")) { - ; /* Don't die - this feature is supported */ - } else if (!strcmp(feature, "cat-blob")) { - ; /* Don't die - this feature is supported */ - } else if (!strcmp(feature, "relative-marks")) { - relative_marks_paths = 1; - } else if (!strcmp(feature, "no-relative-marks")) { - relative_marks_paths = 0; - } else if (!strcmp(feature, "done")) { - require_explicit_termination = 1; - } else if (!strcmp(feature, "force")) { - force_update = 1; - } else if (!strcmp(feature, "notes") || !strcmp(feature, "ls")) { - ; /* do nothing; we have the feature */ - } else { - return 0; - } - - return 1; -} - -static void parse_feature(const char *feature) -{ - if (seen_data_command) - die("Got feature command '%s' after data command", feature); - - if (parse_one_feature(feature, 1)) - return; - - die("This version of fast-import does not support feature %s.", feature); -} - -static void parse_option(const char *option) -{ - if (seen_data_command) - die("Got option command '%s' after data command", option); - - if (parse_one_option(option)) - return; - - die("This version of fast-import does not support option: %s", option); -} - -static void git_pack_config(void) -{ - int indexversion_value; - int limit; - unsigned long packsizelimit_value; - - if (!git_config_get_ulong("pack.depth", &max_depth)) { - if (max_depth > MAX_DEPTH) - max_depth = MAX_DEPTH; - } - if (!git_config_get_int("pack.indexversion", &indexversion_value)) { - pack_idx_opts.version = indexversion_value; - if (pack_idx_opts.version > 2) - git_die_config("pack.indexversion", - "bad pack.indexversion=%"PRIu32, pack_idx_opts.version); - } - if (!git_config_get_ulong("pack.packsizelimit", &packsizelimit_value)) - max_packsize = packsizelimit_value; - - if (!git_config_get_int("fastimport.unpacklimit", &limit)) - unpack_limit = limit; - else if (!git_config_get_int("transfer.unpacklimit", &limit)) - unpack_limit = limit; - - git_config(git_default_config, NULL); -} - -static const char fast_import_usage[] = -"git fast-import [--date-format=<f>] [--max-pack-size=<n>] [--big-file-threshold=<n>] [--depth=<n>] [--active-branches=<n>] [--export-marks=<marks.file>]"; - -static void parse_argv(void) -{ - unsigned int i; - - for (i = 1; i < global_argc; i++) { - const char *a = global_argv[i]; - - if (*a != '-' || !strcmp(a, "--")) - break; - - if (!skip_prefix(a, "--", &a)) - die("unknown option %s", a); - - if (parse_one_option(a)) - continue; - - if (parse_one_feature(a, 0)) - continue; - - if (skip_prefix(a, "cat-blob-fd=", &a)) { - option_cat_blob_fd(a); - continue; - } - - die("unknown option --%s", a); - } - if (i != global_argc) - usage(fast_import_usage); - - seen_data_command = 1; - if (import_marks_file) - read_marks(); - build_mark_map(&sub_marks_from, &sub_marks_to); -} - -int cmd_fast_import(int argc, const char **argv, const char *prefix) -{ - unsigned int i; - - if (argc == 2 && !strcmp(argv[1], "-h")) - usage(fast_import_usage); - - reset_pack_idx_option(&pack_idx_opts); - git_pack_config(); - - alloc_objects(object_entry_alloc); - strbuf_init(&command_buf, 0); - atom_table = xcalloc(atom_table_sz, sizeof(struct atom_str*)); - branch_table = xcalloc(branch_table_sz, sizeof(struct branch*)); - avail_tree_table = xcalloc(avail_tree_table_sz, sizeof(struct avail_tree_content*)); - marks = mem_pool_calloc(&fi_mem_pool, 1, sizeof(struct mark_set)); - - hashmap_init(&object_table, object_entry_hashcmp, NULL, 0); - - /* - * We don't parse most options until after we've seen the set of - * "feature" lines at the start of the stream (which allows the command - * line to override stream data). But we must do an early parse of any - * command-line options that impact how we interpret the feature lines. - */ - for (i = 1; i < argc; i++) { - const char *arg = argv[i]; - if (*arg != '-' || !strcmp(arg, "--")) - break; - if (!strcmp(arg, "--allow-unsafe-features")) - allow_unsafe_features = 1; - } - - global_argc = argc; - global_argv = argv; - - rc_free = mem_pool_alloc(&fi_mem_pool, cmd_save * sizeof(*rc_free)); - for (i = 0; i < (cmd_save - 1); i++) - rc_free[i].next = &rc_free[i + 1]; - rc_free[cmd_save - 1].next = NULL; - - start_packfile(); - set_die_routine(die_nicely); - set_checkpoint_signal(); - while (read_next_command() != EOF) { - const char *v; - if (!strcmp("blob", command_buf.buf)) - parse_new_blob(); - else if (skip_prefix(command_buf.buf, "commit ", &v)) - parse_new_commit(v); - else if (skip_prefix(command_buf.buf, "tag ", &v)) - parse_new_tag(v); - else if (skip_prefix(command_buf.buf, "reset ", &v)) - parse_reset_branch(v); - else if (skip_prefix(command_buf.buf, "ls ", &v)) - parse_ls(v, NULL); - else if (skip_prefix(command_buf.buf, "cat-blob ", &v)) - parse_cat_blob(v); - else if (skip_prefix(command_buf.buf, "get-mark ", &v)) - parse_get_mark(v); - else if (!strcmp("checkpoint", command_buf.buf)) - parse_checkpoint(); - else if (!strcmp("done", command_buf.buf)) - break; - else if (!strcmp("alias", command_buf.buf)) - parse_alias(); - else if (starts_with(command_buf.buf, "progress ")) - parse_progress(); - else if (skip_prefix(command_buf.buf, "feature ", &v)) - parse_feature(v); - else if (skip_prefix(command_buf.buf, "option git ", &v)) - parse_option(v); - else if (starts_with(command_buf.buf, "option ")) - /* ignore non-git options*/; - else - die("Unsupported command: %s", command_buf.buf); - - if (checkpoint_requested) - checkpoint(); - } - - /* argv hasn't been parsed yet, do so */ - if (!seen_data_command) - parse_argv(); - - if (require_explicit_termination && feof(stdin)) - die("stream ends early"); - - end_packfile(); - - dump_branches(); - dump_tags(); - unkeep_all_packs(); - dump_marks(); - - if (pack_edges) - fclose(pack_edges); - - if (show_stats) { - uintmax_t total_count = 0, duplicate_count = 0; - for (i = 0; i < ARRAY_SIZE(object_count_by_type); i++) - total_count += object_count_by_type[i]; - for (i = 0; i < ARRAY_SIZE(duplicate_count_by_type); i++) - duplicate_count += duplicate_count_by_type[i]; - - fprintf(stderr, "%s statistics:\n", argv[0]); - fprintf(stderr, "---------------------------------------------------------------------\n"); - fprintf(stderr, "Alloc'd objects: %10" PRIuMAX "\n", alloc_count); - fprintf(stderr, "Total objects: %10" PRIuMAX " (%10" PRIuMAX " duplicates )\n", total_count, duplicate_count); - fprintf(stderr, " blobs : %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas of %10" PRIuMAX" attempts)\n", object_count_by_type[OBJ_BLOB], duplicate_count_by_type[OBJ_BLOB], delta_count_by_type[OBJ_BLOB], delta_count_attempts_by_type[OBJ_BLOB]); - fprintf(stderr, " trees : %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas of %10" PRIuMAX" attempts)\n", object_count_by_type[OBJ_TREE], duplicate_count_by_type[OBJ_TREE], delta_count_by_type[OBJ_TREE], delta_count_attempts_by_type[OBJ_TREE]); - fprintf(stderr, " commits: %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas of %10" PRIuMAX" attempts)\n", object_count_by_type[OBJ_COMMIT], duplicate_count_by_type[OBJ_COMMIT], delta_count_by_type[OBJ_COMMIT], delta_count_attempts_by_type[OBJ_COMMIT]); - fprintf(stderr, " tags : %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas of %10" PRIuMAX" attempts)\n", object_count_by_type[OBJ_TAG], duplicate_count_by_type[OBJ_TAG], delta_count_by_type[OBJ_TAG], delta_count_attempts_by_type[OBJ_TAG]); - fprintf(stderr, "Total branches: %10lu (%10lu loads )\n", branch_count, branch_load_count); - fprintf(stderr, " marks: %10" PRIuMAX " (%10" PRIuMAX " unique )\n", (((uintmax_t)1) << marks->shift) * 1024, marks_set_count); - fprintf(stderr, " atoms: %10u\n", atom_cnt); - fprintf(stderr, "Memory total: %10" PRIuMAX " KiB\n", (tree_entry_allocd + fi_mem_pool.pool_alloc + alloc_count*sizeof(struct object_entry))/1024); - fprintf(stderr, " pools: %10lu KiB\n", (unsigned long)((tree_entry_allocd + fi_mem_pool.pool_alloc) /1024)); - fprintf(stderr, " objects: %10" PRIuMAX " KiB\n", (alloc_count*sizeof(struct object_entry))/1024); - fprintf(stderr, "---------------------------------------------------------------------\n"); - pack_report(); - fprintf(stderr, "---------------------------------------------------------------------\n"); - fprintf(stderr, "\n"); - } - - return failure ? 1 : 0; -} |