#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;
}
