| /* |
| (See Documentation/git-fast-import.txt for maintained documentation.) |
| Format of STDIN stream: |
| |
| stream ::= cmd*; |
| |
| cmd ::= new_blob |
| | new_commit |
| | new_tag |
| | reset_branch |
| | checkpoint |
| | progress |
| ; |
| |
| new_blob ::= 'blob' lf |
| mark? |
| file_content; |
| file_content ::= data; |
| |
| new_commit ::= 'commit' sp ref_str lf |
| mark? |
| ('author' (sp name)? sp '<' email '>' sp when lf)? |
| 'committer' (sp name)? sp '<' email '>' sp when lf |
| commit_msg |
| ('from' sp committish lf)? |
| ('merge' sp committish lf)* |
| (file_change | ls)* |
| lf?; |
| commit_msg ::= data; |
| |
| ls ::= 'ls' sp '"' quoted(path) '"' lf; |
| |
| file_change ::= file_clr |
| | file_del |
| | file_rnm |
| | file_cpy |
| | file_obm |
| | file_inm; |
| file_clr ::= 'deleteall' lf; |
| file_del ::= 'D' sp path_str lf; |
| file_rnm ::= 'R' sp path_str sp path_str lf; |
| file_cpy ::= 'C' sp path_str sp path_str lf; |
| file_obm ::= 'M' sp mode sp (hexsha1 | idnum) sp path_str lf; |
| file_inm ::= 'M' sp mode sp 'inline' sp path_str lf |
| data; |
| note_obm ::= 'N' sp (hexsha1 | idnum) sp committish lf; |
| note_inm ::= 'N' sp 'inline' sp committish lf |
| data; |
| |
| new_tag ::= 'tag' sp tag_str lf |
| 'from' sp committish lf |
| ('tagger' (sp name)? sp '<' email '>' sp when lf)? |
| tag_msg; |
| tag_msg ::= data; |
| |
| reset_branch ::= 'reset' sp ref_str lf |
| ('from' sp committish lf)? |
| lf?; |
| |
| checkpoint ::= 'checkpoint' lf |
| lf?; |
| |
| progress ::= 'progress' sp not_lf* lf |
| lf?; |
| |
| # note: the first idnum in a stream should be 1 and subsequent |
| # idnums should not have gaps between values as this will cause |
| # the stream parser to reserve space for the gapped values. An |
| # idnum can be updated in the future to a new object by issuing |
| # a new mark directive with the old idnum. |
| # |
| mark ::= 'mark' sp idnum lf; |
| data ::= (delimited_data | exact_data) |
| lf?; |
| |
| # note: delim may be any string but must not contain lf. |
| # data_line may contain any data but must not be exactly |
| # delim. |
| delimited_data ::= 'data' sp '<<' delim lf |
| (data_line lf)* |
| delim lf; |
| |
| # note: declen indicates the length of binary_data in bytes. |
| # declen does not include the lf preceding the binary data. |
| # |
| exact_data ::= 'data' sp declen lf |
| binary_data; |
| |
| # note: quoted strings are C-style quoting supporting \c for |
| # common escapes of 'c' (e..g \n, \t, \\, \") or \nnn where nnn |
| # is the signed byte value in octal. Note that the only |
| # characters which must actually be escaped to protect the |
| # stream formatting is: \, " and LF. Otherwise these values |
| # are UTF8. |
| # |
| committish ::= (ref_str | hexsha1 | sha1exp_str | idnum); |
| ref_str ::= ref; |
| sha1exp_str ::= sha1exp; |
| tag_str ::= tag; |
| path_str ::= path | '"' quoted(path) '"' ; |
| mode ::= '100644' | '644' |
| | '100755' | '755' |
| | '120000' |
| ; |
| |
| declen ::= # unsigned 32 bit value, ascii base10 notation; |
| bigint ::= # unsigned integer value, ascii base10 notation; |
| binary_data ::= # file content, not interpreted; |
| |
| when ::= raw_when | rfc2822_when; |
| raw_when ::= ts sp tz; |
| rfc2822_when ::= # Valid RFC 2822 date and time; |
| |
| sp ::= # ASCII space character; |
| lf ::= # ASCII newline (LF) character; |
| |
| # note: a colon (':') must precede the numerical value assigned to |
| # an idnum. This is to distinguish it from a ref or tag name as |
| # GIT does not permit ':' in ref or tag strings. |
| # |
| idnum ::= ':' bigint; |
| path ::= # GIT style file path, e.g. "a/b/c"; |
| ref ::= # GIT ref name, e.g. "refs/heads/MOZ_GECKO_EXPERIMENT"; |
| tag ::= # GIT tag name, e.g. "FIREFOX_1_5"; |
| sha1exp ::= # Any valid GIT SHA1 expression; |
| hexsha1 ::= # SHA1 in hexadecimal format; |
| |
| # note: name and email are UTF8 strings, however name must not |
| # contain '<' or lf and email must not contain any of the |
| # following: '<', '>', lf. |
| # |
| name ::= # valid GIT author/committer name; |
| email ::= # valid GIT author/committer email; |
| ts ::= # time since the epoch in seconds, ascii base10 notation; |
| tz ::= # GIT style timezone; |
| |
| # note: comments, ls and cat requests may appear anywhere |
| # in the input, except within a data command. Any form |
| # of the data command always escapes the related input |
| # from comment processing. |
| # |
| # In case it is not clear, the '#' that starts the comment |
| # must be the first character on that line (an lf |
| # preceded it). |
| # |
| |
| cat_blob ::= 'cat-blob' sp (hexsha1 | idnum) lf; |
| ls_tree ::= 'ls' sp (hexsha1 | idnum) sp path_str lf; |
| |
| comment ::= '#' not_lf* lf; |
| not_lf ::= # Any byte that is not ASCII newline (LF); |
| */ |
| |
| #include "builtin.h" |
| #include "cache.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 "exec_cmd.h" |
| #include "dir.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) |
| |
| struct object_entry { |
| struct pack_idx_entry idx; |
| struct object_entry *next; |
| uint32_t type : TYPE_BITS, |
| pack_id : PACK_ID_BITS, |
| depth : DEPTH_BITS; |
| }; |
| |
| 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_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 mem_pool { |
| struct mem_pool *next_pool; |
| char *next_free; |
| char *end; |
| uintmax_t space[FLEX_ARRAY]; /* more */ |
| }; |
| |
| 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; |
| unsigned char sha1[20]; |
| } 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 pack_id : PACK_ID_BITS; |
| unsigned char sha1[20]; |
| }; |
| |
| struct tag { |
| struct tag *next_tag; |
| const char *name; |
| unsigned int pack_id; |
| unsigned char sha1[20]; |
| }; |
| |
| struct hash_list { |
| struct hash_list *next; |
| unsigned char sha1[20]; |
| }; |
| |
| typedef enum { |
| WHENSPEC_RAW = 1, |
| WHENSPEC_RFC2822, |
| WHENSPEC_NOW |
| } whenspec_type; |
| |
| struct recent_command { |
| struct recent_command *prev; |
| struct recent_command *next; |
| char *buf; |
| }; |
| |
| /* Configured limits on output */ |
| static unsigned long max_depth = 10; |
| static off_t max_packsize; |
| static int force_update; |
| static int pack_compression_level = Z_DEFAULT_COMPRESSION; |
| static int pack_compression_seen; |
| |
| /* 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 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 size_t mem_pool_alloc = 2*1024*1024 - sizeof(struct mem_pool); |
| static size_t total_allocd; |
| static struct mem_pool *mem_pool; |
| |
| /* 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 unsigned int pack_id; |
| static struct sha1file *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 object_entry *object_table[1 << 16]; |
| 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 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 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; |
| |
| /* Signal handling */ |
| static volatile sig_atomic_t checkpoint_requested; |
| |
| /* Where to write output of cat-blob commands */ |
| static int cat_blob_fd = STDOUT_FILENO; |
| |
| static void parse_argv(void); |
| static void parse_cat_blob(void); |
| static void parse_ls(struct branch *b); |
| |
| 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_sha1(b->branch_tree.versions[1].sha1)) |
| fputs(" dirty", rpt); |
| fputc('\n', rpt); |
| |
| fprintf(rpt, " tip commit : %s\n", sha1_to_hex(b->sha1)); |
| fprintf(rpt, " old tree : %s\n", sha1_to_hex(b->branch_tree.versions[0].sha1)); |
| fprintf(rpt, " cur tree : %s\n", sha1_to_hex(b->branch_tree.versions[1].sha1)); |
| 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 dump_marks_helper(FILE *, uintmax_t, struct mark_set *); |
| |
| static void write_crash_report(const char *err) |
| { |
| char *loc = git_path("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("can't write crash report %s: %s", loc, strerror(errno)); |
| 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_LOCAL)); |
| 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(sha1_to_hex(tg->sha1), 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 |
| dump_marks_helper(rpt, 0, marks); |
| |
| fputc('\n', rpt); |
| fputs("-------------------\n", rpt); |
| fputs("END OF CRASH REPORT\n", rpt); |
| fclose(rpt); |
| } |
| |
| 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(unsigned char *sha1) |
| { |
| struct object_entry *e; |
| |
| if (blocks->next_free == blocks->end) |
| alloc_objects(object_entry_alloc); |
| |
| e = blocks->next_free++; |
| hashcpy(e->idx.sha1, sha1); |
| return e; |
| } |
| |
| static struct object_entry *find_object(unsigned char *sha1) |
| { |
| unsigned int h = sha1[0] << 8 | sha1[1]; |
| struct object_entry *e; |
| for (e = object_table[h]; e; e = e->next) |
| if (!hashcmp(sha1, e->idx.sha1)) |
| return e; |
| return NULL; |
| } |
| |
| static struct object_entry *insert_object(unsigned char *sha1) |
| { |
| unsigned int h = sha1[0] << 8 | sha1[1]; |
| struct object_entry *e = object_table[h]; |
| |
| while (e) { |
| if (!hashcmp(sha1, e->idx.sha1)) |
| return e; |
| e = e->next; |
| } |
| |
| e = new_object(sha1); |
| e->next = object_table[h]; |
| e->idx.offset = 0; |
| object_table[h] = e; |
| return e; |
| } |
| |
| 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 *pool_alloc(size_t len) |
| { |
| struct mem_pool *p; |
| void *r; |
| |
| /* round up to a 'uintmax_t' alignment */ |
| if (len & (sizeof(uintmax_t) - 1)) |
| len += sizeof(uintmax_t) - (len & (sizeof(uintmax_t) - 1)); |
| |
| for (p = mem_pool; p; p = p->next_pool) |
| if ((p->end - p->next_free >= len)) |
| break; |
| |
| if (!p) { |
| if (len >= (mem_pool_alloc/2)) { |
| total_allocd += len; |
| return xmalloc(len); |
| } |
| total_allocd += sizeof(struct mem_pool) + mem_pool_alloc; |
| p = xmalloc(sizeof(struct mem_pool) + mem_pool_alloc); |
| p->next_pool = mem_pool; |
| p->next_free = (char *) p->space; |
| p->end = p->next_free + mem_pool_alloc; |
| mem_pool = p; |
| } |
| |
| r = p->next_free; |
| p->next_free += len; |
| return r; |
| } |
| |
| static void *pool_calloc(size_t count, size_t size) |
| { |
| size_t len = count * size; |
| void *r = pool_alloc(len); |
| memset(r, 0, len); |
| return r; |
| } |
| |
| static char *pool_strdup(const char *s) |
| { |
| char *r = pool_alloc(strlen(s) + 1); |
| strcpy(r, s); |
| return r; |
| } |
| |
| static void insert_mark(uintmax_t idnum, struct object_entry *oe) |
| { |
| struct mark_set *s = marks; |
| while ((idnum >> s->shift) >= 1024) { |
| s = pool_calloc(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] = pool_calloc(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 struct object_entry *find_mark(uintmax_t idnum) |
| { |
| uintmax_t orig_idnum = idnum; |
| struct mark_set *s = marks; |
| 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 = pool_alloc(sizeof(struct atom_str) + len + 1); |
| c->str_len = len; |
| strncpy(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); |
| switch (check_ref_format(name)) { |
| case 0: break; /* its valid */ |
| case CHECK_REF_FORMAT_ONELEVEL: |
| break; /* valid, but too few '/', allow anyway */ |
| default: |
| die("Branch name doesn't conform to GIT standards: %s", name); |
| } |
| |
| b = pool_calloc(1, sizeof(struct branch)); |
| b->name = pool_strdup(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 = pool_alloc(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; |
| memcpy(r->entries,t->entries,t->entry_count*sizeof(t->entries[0])); |
| 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; |
| total_allocd += n * sizeof(struct tree_entry); |
| avail_tree_entry = e = xmalloc(n * sizeof(struct tree_entry)); |
| 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_sha1(b->versions[1].sha1)) |
| 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) |
| { |
| static char tmpfile[PATH_MAX]; |
| struct packed_git *p; |
| struct pack_header hdr; |
| int pack_fd; |
| |
| pack_fd = odb_mkstemp(tmpfile, sizeof(tmpfile), |
| "pack/tmp_pack_XXXXXX"); |
| p = xcalloc(1, sizeof(*p) + strlen(tmpfile) + 2); |
| strcpy(p->pack_name, tmpfile); |
| p->pack_fd = pack_fd; |
| p->do_not_close = 1; |
| pack_file = sha1fd(pack_fd, p->pack_name); |
| |
| hdr.hdr_signature = htonl(PACK_SIGNATURE); |
| hdr.hdr_version = htonl(2); |
| hdr.hdr_entries = 0; |
| sha1write(pack_file, &hdr, sizeof(hdr)); |
| |
| pack_data = p; |
| pack_size = sizeof(hdr); |
| object_count = 0; |
| |
| all_packs = xrealloc(all_packs, sizeof(*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. */ |
| idx = xmalloc(object_count * sizeof(*idx)); |
| 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_data->sha1); |
| free(idx); |
| return tmpfile; |
| } |
| |
| static char *keep_pack(const char *curr_index_name) |
| { |
| static char name[PATH_MAX]; |
| static const char *keep_msg = "fast-import"; |
| int keep_fd; |
| |
| keep_fd = odb_pack_keep(name, sizeof(name), pack_data->sha1); |
| 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"); |
| |
| snprintf(name, sizeof(name), "%s/pack/pack-%s.pack", |
| get_object_directory(), sha1_to_hex(pack_data->sha1)); |
| if (move_temp_to_file(pack_data->pack_name, name)) |
| die("cannot store pack file"); |
| |
| snprintf(name, sizeof(name), "%s/pack/pack-%s.idx", |
| get_object_directory(), sha1_to_hex(pack_data->sha1)); |
| if (move_temp_to_file(curr_index_name, name)) |
| die("cannot store index file"); |
| free((void *)curr_index_name); |
| return name; |
| } |
| |
| static void unkeep_all_packs(void) |
| { |
| static char name[PATH_MAX]; |
| int k; |
| |
| for (k = 0; k < pack_id; k++) { |
| struct packed_git *p = all_packs[k]; |
| snprintf(name, sizeof(name), "%s/pack/pack-%s.keep", |
| get_object_directory(), sha1_to_hex(p->sha1)); |
| unlink_or_warn(name); |
| } |
| } |
| |
| static void end_packfile(void) |
| { |
| struct packed_git *old_p = pack_data, *new_p; |
| |
| clear_delta_base_cache(); |
| if (object_count) { |
| unsigned char cur_pack_sha1[20]; |
| char *idx_name; |
| int i; |
| struct branch *b; |
| struct tag *t; |
| |
| close_pack_windows(pack_data); |
| sha1close(pack_file, cur_pack_sha1, 0); |
| fixup_pack_header_footer(pack_data->pack_fd, pack_data->sha1, |
| pack_data->pack_name, object_count, |
| cur_pack_sha1, pack_size); |
| 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(new_p); |
| |
| /* 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", sha1_to_hex(b->sha1)); |
| } |
| } |
| for (t = first_tag; t; t = t->next_tag) { |
| if (t->pack_id == pack_id) |
| fprintf(pack_edges, " %s", sha1_to_hex(t->sha1)); |
| } |
| fputc('\n', pack_edges); |
| fflush(pack_edges); |
| } |
| |
| pack_id++; |
| } |
| else { |
| close(old_p->pack_fd); |
| unlink_or_warn(old_p->pack_name); |
| } |
| free(old_p); |
| |
| /* 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, |
| unsigned char *sha1out, |
| uintmax_t mark) |
| { |
| void *out, *delta; |
| struct object_entry *e; |
| unsigned char hdr[96]; |
| unsigned char sha1[20]; |
| unsigned long hdrlen, deltalen; |
| git_SHA_CTX c; |
| git_zstream s; |
| |
| hdrlen = sprintf((char *)hdr,"%s %lu", typename(type), |
| (unsigned long)dat->len) + 1; |
| git_SHA1_Init(&c); |
| git_SHA1_Update(&c, hdr, hdrlen); |
| git_SHA1_Update(&c, dat->buf, dat->len); |
| git_SHA1_Final(sha1, &c); |
| if (sha1out) |
| hashcpy(sha1out, sha1); |
| |
| e = insert_object(sha1); |
| if (mark) |
| insert_mark(mark, e); |
| if (e->idx.offset) { |
| duplicate_count_by_type[type]++; |
| return 1; |
| } else if (find_sha1_pack(sha1, packed_git)) { |
| 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.buf && last->depth < max_depth && dat->len > 20) { |
| delta = diff_delta(last->data.buf, last->data.len, |
| dat->buf, dat->len, |
| &deltalen, dat->len - 20); |
| } else |
| delta = NULL; |
| |
| memset(&s, 0, sizeof(s)); |
| 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 + 60 + s.total_out) > max_packsize) |
| || (pack_size + 60 + 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(delta); |
| delta = NULL; |
| |
| memset(&s, 0, sizeof(s)); |
| 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(OBJ_OFS_DELTA, deltalen, hdr); |
| sha1write(pack_file, hdr, hdrlen); |
| pack_size += hdrlen; |
| |
| hdr[pos] = ofs & 127; |
| while (ofs >>= 7) |
| hdr[--pos] = 128 | (--ofs & 127); |
| sha1write(pack_file, hdr + pos, sizeof(hdr) - pos); |
| pack_size += sizeof(hdr) - pos; |
| } else { |
| e->depth = 0; |
| hdrlen = encode_in_pack_object_header(type, dat->len, hdr); |
| sha1write(pack_file, hdr, hdrlen); |
| pack_size += hdrlen; |
| } |
| |
| sha1write(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(off_t to, git_SHA_CTX *ctx) |
| { |
| if (ftruncate(pack_data->pack_fd, to) |
| || lseek(pack_data->pack_fd, to, SEEK_SET) != to) |
| die_errno("cannot truncate pack to skip duplicate"); |
| pack_size = to; |
| |
| /* yes this is a layering violation */ |
| pack_file->total = to; |
| pack_file->offset = 0; |
| pack_file->ctx = *ctx; |
| } |
| |
| static void stream_blob(uintmax_t len, unsigned char *sha1out, 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; |
| unsigned char sha1[20]; |
| unsigned long hdrlen; |
| off_t offset; |
| git_SHA_CTX c; |
| git_SHA_CTX pack_file_ctx; |
| git_zstream s; |
| int status = Z_OK; |
| |
| /* Determine if we should auto-checkpoint. */ |
| if ((max_packsize && (pack_size + 60 + len) > max_packsize) |
| || (pack_size + 60 + len) < pack_size) |
| cycle_packfile(); |
| |
| offset = pack_size; |
| |
| /* preserve the pack_file SHA1 ctx in case we have to truncate later */ |
| sha1flush(pack_file); |
| pack_file_ctx = pack_file->ctx; |
| |
| hdrlen = snprintf((char *)out_buf, out_sz, "blob %" PRIuMAX, len) + 1; |
| if (out_sz <= hdrlen) |
| die("impossibly large object header"); |
| |
| git_SHA1_Init(&c); |
| git_SHA1_Update(&c, out_buf, hdrlen); |
| |
| crc32_begin(pack_file); |
| |
| memset(&s, 0, sizeof(s)); |
| git_deflate_init(&s, pack_compression_level); |
| |
| hdrlen = encode_in_pack_object_header(OBJ_BLOB, len, out_buf); |
| if (out_sz <= hdrlen) |
| die("impossibly large object header"); |
| |
| 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); |
| |
| git_SHA1_Update(&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; |
| sha1write(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); |
| git_SHA1_Final(sha1, &c); |
| |
| if (sha1out) |
| hashcpy(sha1out, sha1); |
| |
| e = insert_object(sha1); |
| |
| if (mark) |
| insert_mark(mark, e); |
| |
| if (e->idx.offset) { |
| duplicate_count_by_type[OBJ_BLOB]++; |
| truncate_pack(offset, &pack_file_ctx); |
| |
| } else if (find_sha1_pack(sha1, packed_git)) { |
| 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(offset, &pack_file_ctx); |
| |
| } 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 + 20)) { |
| /* 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 + 20) 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); |
| sha1flush(pack_file); |
| |
| /* We have to offer 20 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 20 bytes within any window it maps. But |
| * we don't actually create the footer here. |
| */ |
| p->pack_size = pack_size + 20; |
| } |
| return unpack_entry(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) |
| { |
| unsigned char *sha1 = root->versions[1].sha1; |
| 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_sha1(sha1)) |
| return; |
| |
| myoe = find_object(sha1); |
| if (myoe && myoe->pack_id != MAX_PACK_ID) { |
| if (myoe->type != OBJ_TREE) |
| die("Not a tree: %s", sha1_to_hex(sha1)); |
| t->delta_depth = myoe->depth; |
| buf = gfi_unpack_entry(myoe, &size); |
| if (!buf) |
| die("Can't load tree %s", sha1_to_hex(sha1)); |
| } else { |
| enum object_type type; |
| buf = read_sha1_file(sha1, &type, &size); |
| if (!buf || type != OBJ_TREE) |
| die("Can't load tree %s", sha1_to_hex(sha1)); |
| } |
| |
| 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", sha1_to_hex(sha1)); |
| 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].sha1, (unsigned char *)c); |
| hashcpy(e->versions[1].sha1, (unsigned char *)c); |
| c += 20; |
| } |
| 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,sizeof(t->entries[0]),tecmp0); |
| else |
| qsort(t->entries,t->entry_count,sizeof(t->entries[0]),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, |
| e->name->str_dat, '\0'); |
| strbuf_add(b, e->versions[v].sha1, 20); |
| } |
| } |
| |
| static void store_tree(struct tree_entry *root) |
| { |
| struct tree_content *t = root->tree; |
| unsigned int i, j, del; |
| struct last_object lo = { STRBUF_INIT, 0, 0, /* no_swap */ 1 }; |
| struct object_entry *le; |
| |
| if (!is_null_sha1(root->versions[1].sha1)) |
| return; |
| |
| for (i = 0; i < t->entry_count; i++) { |
| if (t->entries[i]->tree) |
| store_tree(t->entries[i]); |
| } |
| |
| le = find_object(root->versions[0].sha1); |
| 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].sha1, 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; |
| hashcpy(e->versions[0].sha1, e->versions[1].sha1); |
| t->entries[j++] = e; |
| } else { |
| release_tree_entry(e); |
| del++; |
| } |
| } |
| t->entry_count -= del; |
| } |
| |
| static void tree_content_replace( |
| struct tree_entry *root, |
| const unsigned char *sha1, |
| const uint16_t mode, |
| struct tree_content *newtree) |
| { |
| if (!S_ISDIR(mode)) |
| die("Root cannot be a non-directory"); |
| hashcpy(root->versions[1].sha1, sha1); |
| 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 unsigned char *sha1, |
| const uint16_t mode, |
| struct tree_content *subtree) |
| { |
| struct tree_content *t; |
| const char *slash1; |
| unsigned int i, n; |
| struct tree_entry *e; |
| |
| slash1 = strchr(p, '/'); |
| if (slash1) |
| n = slash1 - p; |
| else |
| n = strlen(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 && !strncmp_icase(p, e->name->str_dat, n)) { |
| if (!slash1) { |
| if (!S_ISDIR(mode) |
| && e->versions[1].mode == mode |
| && !hashcmp(e->versions[1].sha1, sha1)) |
| return 0; |
| e->versions[1].mode = mode; |
| hashcpy(e->versions[1].sha1, sha1); |
| if (e->tree) |
| release_tree_content_recursive(e->tree); |
| e->tree = subtree; |
| hashclr(root->versions[1].sha1); |
| 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, sha1, mode, subtree)) { |
| hashclr(root->versions[1].sha1); |
| 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; |
| hashclr(e->versions[0].sha1); |
| 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, sha1, mode, subtree); |
| } else { |
| e->tree = subtree; |
| e->versions[1].mode = mode; |
| hashcpy(e->versions[1].sha1, sha1); |
| } |
| hashclr(root->versions[1].sha1); |
| return 1; |
| } |
| |
| static int tree_content_remove( |
| struct tree_entry *root, |
| const char *p, |
| struct tree_entry *backup_leaf) |
| { |
| struct tree_content *t; |
| const char *slash1; |
| unsigned int i, n; |
| struct tree_entry *e; |
| |
| slash1 = strchr(p, '/'); |
| if (slash1) |
| n = slash1 - p; |
| else |
| n = strlen(p); |
| |
| 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 && !strncmp_icase(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)) { |
| for (n = 0; n < e->tree->entry_count; n++) { |
| if (e->tree->entries[n]->versions[1].mode) { |
| hashclr(root->versions[1].sha1); |
| 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; |
| hashclr(e->versions[1].sha1); |
| hashclr(root->versions[1].sha1); |
| return 1; |
| } |
| |
| static int tree_content_get( |
| struct tree_entry *root, |
| const char *p, |
| struct tree_entry *leaf) |
| { |
| struct tree_content *t; |
| const char *slash1; |
| unsigned int i, n; |
| struct tree_entry *e; |
| |
| slash1 = strchr(p, '/'); |
| if (slash1) |
| n = slash1 - p; |
| else |
| n = strlen(p); |
| |
| 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 && !strncmp_icase(p, e->name->str_dat, n)) { |
| if (!slash1) { |
| memcpy(leaf, e, sizeof(*leaf)); |
| if (e->tree && is_null_sha1(e->versions[1].sha1)) |
| leaf->tree = dup_tree_content(e->tree); |
| else |
| leaf->tree = NULL; |
| return 1; |
| } |
| if (!S_ISDIR(e->versions[1].mode)) |
| return 0; |
| if (!e->tree) |
| load_tree(e); |
| return tree_content_get(e, slash1 + 1, leaf); |
| } |
| } |
| return 0; |
| } |
| |
| static int update_branch(struct branch *b) |
| { |
| static const char *msg = "fast-import"; |
| struct ref_lock *lock; |
| unsigned char old_sha1[20]; |
| |
| if (is_null_sha1(b->sha1)) |
| return 0; |
| if (read_ref(b->name, old_sha1)) |
| hashclr(old_sha1); |
| lock = lock_any_ref_for_update(b->name, old_sha1, 0); |
| if (!lock) |
| return error("Unable to lock %s", b->name); |
| if (!force_update && !is_null_sha1(old_sha1)) { |
| struct commit *old_cmit, *new_cmit; |
| |
| old_cmit = lookup_commit_reference_gently(old_sha1, 0); |
| new_cmit = lookup_commit_reference_gently(b->sha1, 0); |
| if (!old_cmit || !new_cmit) { |
| unlock_ref(lock); |
| return error("Branch %s is missing commits.", b->name); |
| } |
| |
| if (!in_merge_bases(old_cmit, &new_cmit, 1)) { |
| unlock_ref(lock); |
| warning("Not updating %s" |
| " (new tip %s does not contain %s)", |
| b->name, sha1_to_hex(b->sha1), sha1_to_hex(old_sha1)); |
| return -1; |
| } |
| } |
| if (write_ref_sha1(lock, b->sha1, msg) < 0) |
| return error("Unable to update %s", b->name); |
| 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 ref_lock *lock; |
| char ref_name[PATH_MAX]; |
| |
| for (t = first_tag; t; t = t->next_tag) { |
| sprintf(ref_name, "tags/%s", t->name); |
| lock = lock_ref_sha1(ref_name, NULL); |
| if (!lock || write_ref_sha1(lock, t->sha1, msg) < 0) |
| failure |= error("Unable to update %s", ref_name); |
| } |
| } |
| |
| static void dump_marks_helper(FILE *f, |
| uintmax_t base, |
| struct mark_set *m) |
| { |
| uintmax_t k; |
| if (m->shift) { |
| for (k = 0; k < 1024; k++) { |
| if (m->data.sets[k]) |
| dump_marks_helper(f, base + (k << m->shift), |
| m->data.sets[k]); |
| } |
| } else { |
| for (k = 0; k < 1024; k++) { |
| if (m->data.marked[k]) |
| fprintf(f, ":%" PRIuMAX " %s\n", base + k, |
| sha1_to_hex(m->data.marked[k]->idx.sha1)); |
| } |
| } |
| } |
| |
| static void dump_marks(void) |
| { |
| static struct lock_file mark_lock; |
| int mark_fd; |
| FILE *f; |
| |
| if (!export_marks_file) |
| return; |
| |
| mark_fd = hold_lock_file_for_update(&mark_lock, export_marks_file, 0); |
| if (mark_fd < 0) { |
| failure |= error("Unable to write marks file %s: %s", |
| export_marks_file, strerror(errno)); |
| return; |
| } |
| |
| f = fdopen(mark_fd, "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; |
| } |
| |
| /* |
| * Since the lock file was fdopen()'ed, it should not be close()'ed. |
| * Assign -1 to the lock file descriptor so that commit_lock_file() |
| * won't try to close() it. |
| */ |
| mark_lock.fd = -1; |
| |
| dump_marks_helper(f, 0, marks); |
| if (ferror(f) || fclose(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; |
| } |
| |
| if (commit_lock_file(&mark_lock)) { |
| int saved_errno = errno; |
| rollback_lock_file(&mark_lock); |
| failure |= error("Unable to commit marks file %s: %s", |
| export_marks_file, strerror(saved_errno)); |
| return; |
| } |
| } |
| |
| static void read_marks(void) |
| { |
| char line[512]; |
| FILE *f = fopen(import_marks_file, "r"); |
| if (f) |
| ; |
| else if (import_marks_file_ignore_missing && errno == ENOENT) |
| return; /* Marks file does not exist */ |
| else |
| die_errno("cannot read '%s'", import_marks_file); |
| while (fgets(line, sizeof(line), f)) { |
| uintmax_t mark; |
| char *end; |
| unsigned char sha1[20]; |
| struct object_entry *e; |
| |
| 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_sha1(end + 1, sha1)) |
| die("corrupt mark line: %s", line); |
| e = find_object(sha1); |
| if (!e) { |
| enum object_type type = sha1_object_info(sha1, NULL); |
| if (type < 0) |
| die("object not found: %s", sha1_to_hex(sha1)); |
| e = insert_object(sha1); |
| e->type = type; |
| e->pack_id = MAX_PACK_ID; |
| e->idx.offset = 1; /* just not zero! */ |
| } |
| insert_mark(mark, e); |
| } |
| fclose(f); |
| } |
| |
| |
| 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; |
| |
| strbuf_detach(&command_buf, NULL); |
| stdin_eof = strbuf_getline(&command_buf, stdin, '\n'); |
| if (stdin_eof) |
| return EOF; |
| |
| if (!seen_data_command |
| && prefixcmp(command_buf.buf, "feature ") |
| && prefixcmp(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 = command_buf.buf; |
| rc->prev = cmd_tail; |
| rc->next = cmd_hist.prev; |
| rc->prev->next = rc; |
| cmd_tail = rc; |
| } |
| if (!prefixcmp(command_buf.buf, "cat-blob ")) { |
| parse_cat_blob(); |
| continue; |
| } |
| 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) |
| { |
| if (!prefixcmp(command_buf.buf, "mark :")) { |
| next_mark = strtoumax(command_buf.buf + 6, NULL, 10); |
| read_next_command(); |
| } |
| else |
| next_mark = 0; |
| } |
| |
| static int parse_data(struct strbuf *sb, uintmax_t limit, uintmax_t *len_res) |
| { |
| strbuf_reset(sb); |
| |
| if (prefixcmp(command_buf.buf, "data ")) |
| die("Expected 'data n' command, found: %s", command_buf.buf); |
| |
| if (!prefixcmp(command_buf.buf + 5, "<<")) { |
| char *term = xstrdup(command_buf.buf + 5 + 2); |
| size_t term_len = command_buf.len - 5 - 2; |
| |
| strbuf_detach(&command_buf, NULL); |
| for (;;) { |
| if (strbuf_getline(&command_buf, stdin, '\n') == 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(command_buf.buf + 5, 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, char *result, int maxlen) |
| { |
| const char *orig_src = src; |
| char *endp; |
| unsigned long num; |
| |
| errno = 0; |
| |
| num = strtoul(src, &endp, 10); |
| /* NEEDSWORK: perhaps check for reasonable values? */ |
| if (errno || endp == src || *endp != ' ') |
| return -1; |
| |
| src = endp + 1; |
| if (*src != '-' && *src != '+') |
| return -1; |
| |
| num = strtoul(src + 1, &endp, 10); |
| if (errno || endp == src + 1 || *endp || (endp - orig_src) >= maxlen || |
| 1400 < num) |
| return -1; |
| |
| strcpy(result, orig_src); |
| return 0; |
| } |
| |
| static char *parse_ident(const char *buf) |
| { |
| const char *gt; |
| size_t name_len; |
| char *ident; |
| |
| gt = strrchr(buf, '>'); |
| if (!gt) |
| die("Missing > in ident string: %s", buf); |
| gt++; |
| if (*gt != ' ') |
| die("Missing space after > in ident string: %s", buf); |
| gt++; |
| name_len = gt - buf; |
| ident = xmalloc(name_len + 24); |
| strncpy(ident, buf, name_len); |
| |
| switch (whenspec) { |
| case WHENSPEC_RAW: |
| if (validate_raw_date(gt, ident + name_len, 24) < 0) |
| die("Invalid raw date \"%s\" in ident: %s", gt, buf); |
| break; |
| case WHENSPEC_RFC2822: |
| if (parse_date(gt, ident + name_len, 24) < 0) |
| die("Invalid rfc2822 date \"%s\" in ident: %s", gt, buf); |
| break; |
| case WHENSPEC_NOW: |
| if (strcmp("now", gt)) |
| die("Date in ident must be 'now': %s", buf); |
| datestamp(ident + name_len, 24); |
| break; |
| } |
| |
| return ident; |
| } |
| |
| static void parse_and_store_blob( |
| struct last_object *last, |
| unsigned char *sha1out, |
| 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, sha1out, mark); |
| else { |
| if (last) { |
| strbuf_release(&last->data); |
| last->offset = 0; |
| last->depth = 0; |
| } |
| stream_blob(len, sha1out, mark); |
| skip_optional_lf(); |
| } |
| } |
| |
| static void parse_new_blob(void) |
| { |
| read_next_command(); |
| parse_mark(); |
| 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 >= 20) |
| 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, 40 - j); |
| path[i + 40 - j] = '\0'; |
| } |
| |
| static uintmax_t do_change_note_fanout( |
| struct tree_entry *orig_root, struct tree_entry *root, |
| char *hex_sha1, unsigned int hex_sha1_len, |
| char *fullpath, unsigned int fullpath_len, |
| unsigned char fanout) |
| { |
| struct tree_content *t = root->tree; |
| struct tree_entry *e, leaf; |
| unsigned int i, tmp_hex_sha1_len, tmp_fullpath_len; |
| uintmax_t num_notes = 0; |
| unsigned char sha1[20]; |
| char realpath[60]; |
| |
| for (i = 0; t && i < t->entry_count; i++) { |
| e = t->entries[i]; |
| tmp_hex_sha1_len = hex_sha1_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_sha1_len > 40 || |
| e->name->str_len % 2) |
| continue; |
| |
| /* This _may_ be a note entry, or a subdir containing notes */ |
| memcpy(hex_sha1 + hex_sha1_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_sha1_len == 40 && !get_sha1_hex(hex_sha1, sha1)) { |
| /* This is a note entry */ |
| construct_path_with_fanout(hex_sha1, 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)) |
| die("Failed to remove path %s", fullpath); |
| tree_content_set(orig_root, realpath, |
| leaf.versions[1].sha1, |
| leaf.versions[1].mode, |
| leaf.tree); |
| } else if (S_ISDIR(e->versions[1].mode)) { |
| /* This is a subdir that may contain note entries */ |
| if (!e->tree) |
| load_tree(e); |
| num_notes += do_change_note_fanout(orig_root, e, |
| hex_sha1, tmp_hex_sha1_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) |
| { |
| char hex_sha1[40], path[60]; |
| return do_change_note_fanout(root, root, hex_sha1, 0, path, 0, fanout); |
| } |
| |
| static void file_change_m(struct branch *b) |
| { |
| const char *p = command_buf.buf + 2; |
| static struct strbuf uq = STRBUF_INIT; |
| const char *endp; |
| struct object_entry *oe = oe; |
| unsigned char sha1[20]; |
| 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 == ':') { |
| char *x; |
| oe = find_mark(strtoumax(p + 1, &x, 10)); |
| hashcpy(sha1, oe->idx.sha1); |
| p = x; |
| } else if (!prefixcmp(p, "inline")) { |
| inline_data = 1; |
| p += 6; |
| } else { |
| if (get_sha1_hex(p, sha1)) |
| die("Invalid SHA1: %s", command_buf.buf); |
| oe = find_object(sha1); |
| p += 40; |
| } |
| 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) && !memcmp(sha1, EMPTY_TREE_SHA1_BIN, 20) && *p) { |
| tree_content_remove(&b->branch_tree, p, NULL); |
| 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", |
| typename(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; |
| } |
| read_next_command(); |
| parse_and_store_blob(&last_blob, sha1, 0); |
| } else { |
| enum object_type expected = S_ISDIR(mode) ? |
| OBJ_TREE: OBJ_BLOB; |
| enum object_type type = oe ? oe->type : |
| sha1_object_info(sha1, 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", |
| typename(expected), typename(type), |
| command_buf.buf); |
| } |
| |
| if (!*p) { |
| tree_content_replace(&b->branch_tree, sha1, mode, NULL); |
| return; |
| } |
| tree_content_set(&b->branch_tree, p, sha1, mode, NULL); |
| } |
| |
| static void file_change_d(struct branch *b) |
| { |
| const char *p = command_buf.buf + 2; |
| 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); |
| } |
| |
| static void file_change_cr(struct branch *b, int rename) |
| { |
| const char *s, *d; |
| static struct strbuf s_uq = STRBUF_INIT; |
| static struct strbuf d_uq = STRBUF_INIT; |
| const char *endp; |
| struct tree_entry leaf; |
| |
| s = command_buf.buf + 2; |
| 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); |
| else |
| tree_content_get(&b->branch_tree, s, &leaf); |
| 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].sha1, |
| leaf.versions[1].mode, |
| leaf.tree); |
| return; |
| } |
| tree_content_set(&b->branch_tree, d, |
| leaf.versions[1].sha1, |
| leaf.versions[1].mode, |
| leaf.tree); |
| } |
| |
| static void note_change_n(struct branch *b, unsigned char old_fanout) |
| { |
| const char *p = command_buf.buf + 2; |
| static struct strbuf uq = STRBUF_INIT; |
| struct object_entry *oe = oe; |
| struct branch *s; |
| unsigned char sha1[20], commit_sha1[20]; |
| char path[60]; |
| uint16_t inline_data = 0; |
| unsigned char new_fanout; |
| |
| /* <dataref> or 'inline' */ |
| if (*p == ':') { |
| char *x; |
| oe = find_mark(strtoumax(p + 1, &x, 10)); |
| hashcpy(sha1, oe->idx.sha1); |
| p = x; |
| } else if (!prefixcmp(p, "inline")) { |
| inline_data = 1; |
| p += 6; |
| } else { |
| if (get_sha1_hex(p, sha1)) |
| die("Invalid SHA1: %s", command_buf.buf); |
| oe = find_object(sha1); |
| p += 40; |
| } |
| if (*p++ != ' ') |
| die("Missing space after SHA1: %s", command_buf.buf); |
| |
| /* <committish> */ |
| s = lookup_branch(p); |
| if (s) { |
| hashcpy(commit_sha1, s->sha1); |
| } else if (*p == ':') { |
| uintmax_t commit_mark = strtoumax(p + 1, NULL, 10); |
| struct object_entry *commit_oe = find_mark(commit_mark); |
| if (commit_oe->type != OBJ_COMMIT) |
| die("Mark :%" PRIuMAX " not a commit", commit_mark); |
| hashcpy(commit_sha1, commit_oe->idx.sha1); |
| } else if (!get_sha1(p, commit_sha1)) { |
| unsigned long size; |
| char *buf = read_object_with_reference(commit_sha1, |
| commit_type, &size, commit_sha1); |
| if (!buf || size < 46) |
| 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, sha1, 0); |
| } else if (oe) { |
| if (oe->type != OBJ_BLOB) |
| die("Not a blob (actually a %s): %s", |
| typename(oe->type), command_buf.buf); |
| } else if (!is_null_sha1(sha1)) { |
| enum object_type type = sha1_object_info(sha1, NULL); |
| if (type < 0) |
| die("Blob not found: %s", command_buf.buf); |
| if (type != OBJ_BLOB) |
| die("Not a blob (actually a %s): %s", |
| typename(type), command_buf.buf); |
| } |
| |
| construct_path_with_fanout(sha1_to_hex(commit_sha1), old_fanout, path); |
| if (tree_content_remove(&b->branch_tree, path, NULL)) |
| b->num_notes--; |
| |
| if (is_null_sha1(sha1)) |
| return; /* nothing to insert */ |
| |
| b->num_notes++; |
| new_fanout = convert_num_notes_to_fanout(b->num_notes); |
| construct_path_with_fanout(sha1_to_hex(commit_sha1), new_fanout, path); |
| tree_content_set(&b->branch_tree, path, sha1, S_IFREG | 0644, NULL); |
| } |
| |
| static void file_change_deleteall(struct branch *b) |
| { |
| release_tree_content_recursive(b->branch_tree.tree); |
| hashclr(b->branch_tree.versions[0].sha1); |
| hashclr(b->branch_tree.versions[1].sha1); |
| 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 < 46) |
| die("Not a valid commit: %s", sha1_to_hex(b->sha1)); |
| if (memcmp("tree ", buf, 5) |
| || get_sha1_hex(buf + 5, b->branch_tree.versions[1].sha1)) |
| die("The commit %s is corrupt", sha1_to_hex(b->sha1)); |
| hashcpy(b->branch_tree.versions[0].sha1, |
| b->branch_tree.versions[1].sha1); |
| } |
| |
| static void parse_from_existing(struct branch *b) |
| { |
| if (is_null_sha1(b->sha1)) { |
| hashclr(b->branch_tree.versions[0].sha1); |
| hashclr(b->branch_tree.versions[1].sha1); |
| } else { |
| unsigned long size; |
| char *buf; |
| |
| buf = read_object_with_reference(b->sha1, |
| commit_type, &size, b->sha1); |
| parse_from_commit(b, buf, size); |
| free(buf); |
| } |
| } |
| |
| static int parse_from(struct branch *b) |
| { |
| const char *from; |
| struct branch *s; |
| |
| if (prefixcmp(command_buf.buf, "from ")) |
| return 0; |
| |
| if (b->branch_tree.tree) { |
| release_tree_content_recursive(b->branch_tree.tree); |
| b->branch_tree.tree = NULL; |
| } |
| |
| from = strchr(command_buf.buf, ' ') + 1; |
| s = lookup_branch(from); |
| if (b == s) |
| die("Can't create a branch from itself: %s", b->name); |
| else if (s) { |
| unsigned char *t = s->branch_tree.versions[1].sha1; |
| hashcpy(b->sha1, s->sha1); |
| hashcpy(b->branch_tree.versions[0].sha1, t); |
| hashcpy(b->branch_tree.versions[1].sha1, t); |
| } else if (*from == ':') { |
| uintmax_t idnum = strtoumax(from + 1, NULL, 10); |
| struct object_entry *oe = find_mark(idnum); |
| if (oe->type != OBJ_COMMIT) |
| die("Mark :%" PRIuMAX " not a commit", idnum); |
| hashcpy(b->sha1, oe->idx.sha1); |
| 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_sha1(from, b->sha1)) |
| parse_from_existing(b); |
| else |
| die("Invalid ref name or SHA1 expression: %s", from); |
| |
| read_next_command(); |
| return 1; |
| } |
| |
| static struct hash_list *parse_merge(unsigned int *count) |
| { |
| struct hash_list *list = NULL, *n, *e = e; |
| const char *from; |
| struct branch *s; |
| |
| *count = 0; |
| while (!prefixcmp(command_buf.buf, "merge ")) { |
| from = strchr(command_buf.buf, ' ') + 1; |
| n = xmalloc(sizeof(*n)); |
| s = lookup_branch(from); |
| if (s) |
| hashcpy(n->sha1, s->sha1); |
| else if (*from == ':') { |
| uintmax_t idnum = strtoumax(from + 1, NULL, 10); |
| struct object_entry *oe = find_mark(idnum); |
| if (oe->type != OBJ_COMMIT) |
| die("Mark :%" PRIuMAX " not a commit", idnum); |
| hashcpy(n->sha1, oe->idx.sha1); |
| } else if (!get_sha1(from, n->sha1)) { |
| unsigned long size; |
| char *buf = read_object_with_reference(n->sha1, |
| commit_type, &size, n->sha1); |
| if (!buf || size < 46) |
| die("Not a valid commit: %s", from); |
| free(buf); |
| } else |
| die("Invalid ref name or SHA1 expression: %s", from); |
| |
| n->next = NULL; |
| if (list) |
| e->next = n; |
| else |
| list = n; |
| e = n; |
| (*count)++; |
| read_next_command(); |
| } |
| return list; |
| } |
| |
| static void parse_new_commit(void) |
| { |
| static struct strbuf msg = STRBUF_INIT; |
| struct branch *b; |
| char *sp; |
| char *author = NULL; |
| char *committer = NULL; |
| struct hash_list *merge_list = NULL; |
| unsigned int merge_count; |
| unsigned char prev_fanout, new_fanout; |
| |
| /* Obtain the branch name from the rest of our command */ |
| sp = strchr(command_buf.buf, ' ') + 1; |
| b = lookup_branch(sp); |
| if (!b) |
| b = new_branch(sp); |
| |
| read_next_command(); |
| parse_mark(); |
| if (!prefixcmp(command_buf.buf, "author ")) { |
| author = parse_ident(command_buf.buf + 7); |
| read_next_command(); |
| } |
| if (!prefixcmp(command_buf.buf, "committer ")) { |
| committer = parse_ident(command_buf.buf + 10); |
| read_next_command(); |
| } |
| if (!committer) |
| die("Expected committer but didn't get one"); |
| 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 (!prefixcmp(command_buf.buf, "M ")) |
| file_change_m(b); |
| else if (!prefixcmp(command_buf.buf, "D ")) |
| file_change_d(b); |
| else if (!prefixcmp(command_buf.buf, "R ")) |
| file_change_cr(b, 1); |
| else if (!prefixcmp(command_buf.buf, "C ")) |
| file_change_cr(b, 0); |
| else if (!prefixcmp(command_buf.buf, "N ")) |
| note_change_n(b, prev_fanout); |
| else if (!strcmp("deleteall", command_buf.buf)) |
| file_change_deleteall(b); |
| else if (!prefixcmp(command_buf.buf, "ls ")) |
| parse_ls(b); |
| 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); |
| hashcpy(b->branch_tree.versions[0].sha1, |
| b->branch_tree.versions[1].sha1); |
| |
| strbuf_reset(&new_data); |
| strbuf_addf(&new_data, "tree %s\n", |
| sha1_to_hex(b->branch_tree.versions[1].sha1)); |
| if (!is_null_sha1(b->sha1)) |
| strbuf_addf(&new_data, "parent %s\n", sha1_to_hex(b->sha1)); |
| while (merge_list) { |
| struct hash_list *next = merge_list->next; |
| strbuf_addf(&new_data, "parent %s\n", sha1_to_hex(merge_list->sha1)); |
| free(merge_list); |
| merge_list = next; |
| } |
| strbuf_addf(&new_data, |
| "author %s\n" |
| "committer %s\n" |
| "\n", |
| author ? author : committer, committer); |
| strbuf_addbuf(&new_data, &msg); |
| free(author); |
| free(committer); |
| |
| if (!store_object(OBJ_COMMIT, &new_data, NULL, b->sha1, next_mark)) |
| b->pack_id = pack_id; |
| b->last_commit = object_count_by_type[OBJ_COMMIT]; |
| } |
| |
| static void parse_new_tag(void) |
| { |
| static struct strbuf msg = STRBUF_INIT; |
| char *sp; |
| const char *from; |
| char *tagger; |
| struct branch *s; |
| struct tag *t; |
| uintmax_t from_mark = 0; |
| unsigned char sha1[20]; |
| enum object_type type; |
| |
| /* Obtain the new tag name from the rest of our command */ |
| sp = strchr(command_buf.buf, ' ') + 1; |
| t = pool_alloc(sizeof(struct tag)); |
| t->next_tag = NULL; |
| t->name = pool_strdup(sp); |
| if (last_tag) |
| last_tag->next_tag = t; |
| else |
| first_tag = t; |
| last_tag = t; |
| read_next_command(); |
| |
| /* from ... */ |
| if (prefixcmp(command_buf.buf, "from ")) |
| die("Expected from command, got %s", command_buf.buf); |
| from = strchr(command_buf.buf, ' ') + 1; |
| s = lookup_branch(from); |
| if (s) { |
| hashcpy(sha1, s->sha1); |
| type = OBJ_COMMIT; |
| } else if (*from == ':') { |
| struct object_entry *oe; |
| from_mark = strtoumax(from + 1, NULL, 10); |
| oe = find_mark(from_mark); |
| type = oe->type; |
| hashcpy(sha1, oe->idx.sha1); |
| } else if (!get_sha1(from, sha1)) { |
| unsigned long size; |
| char *buf; |
| |
| buf = read_sha1_file(sha1, &type, &size); |
| if (!buf || size < 46) |
| die("Not a valid commit: %s", from); |
| free(buf); |
| } else |
| die("Invalid ref name or SHA1 expression: %s", from); |
| read_next_command(); |
| |
| /* tagger ... */ |
| if (!prefixcmp(command_buf.buf, "tagger ")) { |
| tagger = parse_ident(command_buf.buf + 7); |
| 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", |
| sha1_to_hex(sha1), typename(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->sha1, 0)) |
| t->pack_id = MAX_PACK_ID; |
| else |
| t->pack_id = pack_id; |
| } |
| |
| static void parse_reset_branch(void) |
| { |
| struct branch *b; |
| char *sp; |
| |
| /* Obtain the branch name from the rest of our command */ |
| sp = strchr(command_buf.buf, ' ') + 1; |
| b = lookup_branch(sp); |
| if (b) { |
| hashclr(b->sha1); |
| hashclr(b->branch_tree.versions[0].sha1); |
| hashclr(b->branch_tree.versions[1].sha1); |
| if (b->branch_tree.tree) { |
| release_tree_content_recursive(b->branch_tree.tree); |
| b->branch_tree.tree = NULL; |
| } |
| } |
| else |
| b = new_branch(sp); |
| read_next_command(); |
| parse_from(b); |
| 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) != size) |
| die_errno("Write to frontend failed"); |
| } |
| |
| static void cat_blob(struct object_entry *oe, unsigned char sha1[20]) |
| { |
| 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_sha1_file(sha1, &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", sha1_to_hex(sha1)); |
| cat_blob_write(line.buf, line.len); |
| strbuf_release(&line); |
| free(buf); |
| return; |
| } |
| if (!buf) |
| die("Can't read object %s", sha1_to_hex(sha1)); |
| if (type != OBJ_BLOB) |
| die("Object %s is a %s but a blob was expected.", |
| sha1_to_hex(sha1), typename(type)); |
| strbuf_reset(&line); |
| strbuf_addf(&line, "%s %s %lu\n", sha1_to_hex(sha1), |
| typename(type), size); |
| cat_blob_write(line.buf, line.len); |
| strbuf_release(&line); |
| cat_blob_write(buf, size); |
| cat_blob_write("\n", 1); |
| free(buf); |
| } |
| |
| static void parse_cat_blob(void) |
| { |
| const char *p; |
| struct object_entry *oe = oe; |
| unsigned char sha1[20]; |
| |
| /* cat-blob SP <object> LF */ |
| p = command_buf.buf + strlen("cat-blob "); |
| if (*p == ':') { |
| char *x; |
| oe = find_mark(strtoumax(p + 1, &x, 10)); |
| if (x == p + 1) |
| die("Invalid mark: %s", command_buf.buf); |
| if (!oe) |
| die("Unknown mark: %s", command_buf.buf); |
| if (*x) |
| die("Garbage after mark: %s", command_buf.buf); |
| hashcpy(sha1, oe->idx.sha1); |
| } else { |
| if (get_sha1_hex(p, sha1)) |
| die("Invalid SHA1: %s", command_buf.buf); |
| if (p[40]) |
| die("Garbage after SHA1: %s", command_buf.buf); |
| oe = find_object(sha1); |
| } |
| |
| cat_blob(oe, sha1); |
| } |
| |
| static struct object_entry *dereference(struct object_entry *oe, |
| unsigned char sha1[20]) |
| { |
| unsigned long size; |
| char *buf = NULL; |
| if (!oe) { |
| enum object_type type = sha1_object_info(sha1, NULL); |
| if (type < 0) |
| die("object not found: %s", sha1_to_hex(sha1)); |
| /* cache it! */ |
| oe = insert_object(sha1); |
| 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 treeish: %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_sha1_file(sha1, &unused, &size); |
| } |
| if (!buf) |
| die("Can't load object %s", sha1_to_hex(sha1)); |
| |
| /* Peel one layer. */ |
| switch (oe->type) { |
| case OBJ_TAG: |
| if (size < 40 + strlen("object ") || |
|