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-rw-r--r--fast-import.c697
1 files changed, 509 insertions, 188 deletions
diff --git a/fast-import.c b/fast-import.c
index b477dc6a8f..3e4e655bb9 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -24,10 +24,12 @@ Format of STDIN stream:
commit_msg
('from' sp committish lf)?
('merge' sp committish lf)*
- file_change*
+ (file_change | ls)*
lf?;
commit_msg ::= data;
+ ls ::= 'ls' sp '"' quoted(path) '"' lf;
+
file_change ::= file_clr
| file_del
| file_rnm
@@ -132,14 +134,19 @@ Format of STDIN stream:
ts ::= # time since the epoch in seconds, ascii base10 notation;
tz ::= # GIT style timezone;
- # note: comments 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.
+ # 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);
*/
@@ -156,32 +163,29 @@ Format of STDIN stream:
#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 object_entry {
+ struct pack_idx_entry idx;
struct object_entry *next;
- uint32_t offset;
uint32_t type : TYPE_BITS,
pack_id : PACK_ID_BITS,
depth : DEPTH_BITS;
- unsigned char sha1[20];
};
-struct object_entry_pool
-{
+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
-{
+struct mark_set {
union {
struct object_entry *marked[1024];
struct mark_set *sets[1024];
@@ -189,57 +193,49 @@ struct mark_set
unsigned int shift;
};
-struct last_object
-{
+struct last_object {
struct strbuf data;
- uint32_t offset;
+ off_t offset;
unsigned int depth;
unsigned no_swap : 1;
};
-struct mem_pool
-{
+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 {
struct atom_str *next_atom;
unsigned short str_len;
char str_dat[FLEX_ARRAY]; /* more */
};
struct tree_content;
-struct tree_entry
-{
+struct tree_entry {
struct tree_content *tree;
struct atom_str *name;
- struct tree_entry_ms
- {
+ struct tree_entry_ms {
uint16_t mode;
unsigned char sha1[20];
} versions[2];
};
-struct tree_content
-{
+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
-{
+struct avail_tree_content {
unsigned int entry_capacity; /* must match tree_content */
struct avail_tree_content *next_avail;
};
-struct branch
-{
+struct branch {
struct branch *table_next_branch;
struct branch *active_next_branch;
const char *name;
@@ -251,16 +247,14 @@ struct branch
unsigned char sha1[20];
};
-struct tag
-{
+struct tag {
struct tag *next_tag;
const char *name;
unsigned int pack_id;
unsigned char sha1[20];
};
-struct hash_list
-{
+struct hash_list {
struct hash_list *next;
unsigned char sha1[20];
};
@@ -268,11 +262,10 @@ struct hash_list
typedef enum {
WHENSPEC_RAW = 1,
WHENSPEC_RFC2822,
- WHENSPEC_NOW,
+ WHENSPEC_NOW
} whenspec_type;
-struct recent_command
-{
+struct recent_command {
struct recent_command *prev;
struct recent_command *next;
char *buf;
@@ -280,8 +273,7 @@ struct recent_command
/* Configured limits on output */
static unsigned long max_depth = 10;
-static off_t max_packsize = (1LL << 32) - 1;
-static uintmax_t big_file_threshold = 512 * 1024 * 1024;
+static off_t max_packsize;
static int force_update;
static int pack_compression_level = Z_DEFAULT_COMPRESSION;
static int pack_compression_seen;
@@ -313,9 +305,10 @@ 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 unsigned long pack_size;
+static off_t pack_size;
/* Table of objects we've written. */
static unsigned int object_entry_alloc = 5000;
@@ -325,6 +318,7 @@ 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 */
@@ -361,7 +355,15 @@ 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)
{
@@ -500,6 +502,32 @@ static NORETURN void die_nicely(const char *err, va_list params)
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;
@@ -521,7 +549,7 @@ static struct object_entry *new_object(unsigned char *sha1)
alloc_objects(object_entry_alloc);
e = blocks->next_free++;
- hashcpy(e->sha1, sha1);
+ hashcpy(e->idx.sha1, sha1);
return e;
}
@@ -530,7 +558,7 @@ 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->sha1))
+ if (!hashcmp(sha1, e->idx.sha1))
return e;
return NULL;
}
@@ -539,22 +567,17 @@ static struct object_entry *insert_object(unsigned char *sha1)
{
unsigned int h = sha1[0] << 8 | sha1[1];
struct object_entry *e = object_table[h];
- struct object_entry *p = NULL;
while (e) {
- if (!hashcmp(sha1, e->sha1))
+ if (!hashcmp(sha1, e->idx.sha1))
return e;
- p = e;
e = e->next;
}
e = new_object(sha1);
- e->next = NULL;
- e->offset = 0;
- if (p)
- p->next = e;
- else
- object_table[h] = e;
+ e->next = object_table[h];
+ e->idx.offset = 0;
+ object_table[h] = e;
return e;
}
@@ -839,11 +862,13 @@ static void start_packfile(void)
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;
- write_or_die(p->pack_fd, &hdr, sizeof(hdr));
+ sha1write(pack_file, &hdr, sizeof(hdr));
pack_data = p;
pack_size = sizeof(hdr);
@@ -853,67 +878,30 @@ static void start_packfile(void)
all_packs[pack_id] = p;
}
-static int oecmp (const void *a_, const void *b_)
-{
- struct object_entry *a = *((struct object_entry**)a_);
- struct object_entry *b = *((struct object_entry**)b_);
- return hashcmp(a->sha1, b->sha1);
-}
-
-static char *create_index(void)
+static const char *create_index(void)
{
- static char tmpfile[PATH_MAX];
- git_SHA_CTX ctx;
- struct sha1file *f;
- struct object_entry **idx, **c, **last, *e;
+ const char *tmpfile;
+ struct pack_idx_entry **idx, **c, **last;
+ struct object_entry *e;
struct object_entry_pool *o;
- uint32_t array[256];
- int i, idx_fd;
- /* Build the sorted table of object IDs. */
- idx = xmalloc(object_count * sizeof(struct object_entry*));
+ /* 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;
+ *c++ = &e->idx;
last = idx + object_count;
if (c != last)
die("internal consistency error creating the index");
- qsort(idx, object_count, sizeof(struct object_entry*), oecmp);
- /* Generate the fan-out array. */
- c = idx;
- for (i = 0; i < 256; i++) {
- struct object_entry **next = c;
- while (next < last) {
- if ((*next)->sha1[0] != i)
- break;
- next++;
- }
- array[i] = htonl(next - idx);
- c = next;
- }
-
- idx_fd = odb_mkstemp(tmpfile, sizeof(tmpfile),
- "pack/tmp_idx_XXXXXX");
- f = sha1fd(idx_fd, tmpfile);
- sha1write(f, array, 256 * sizeof(int));
- git_SHA1_Init(&ctx);
- for (c = idx; c != last; c++) {
- uint32_t offset = htonl((*c)->offset);
- sha1write(f, &offset, 4);
- sha1write(f, (*c)->sha1, sizeof((*c)->sha1));
- git_SHA1_Update(&ctx, (*c)->sha1, 20);
- }
- sha1write(f, pack_data->sha1, sizeof(pack_data->sha1));
- sha1close(f, NULL, CSUM_FSYNC);
+ tmpfile = write_idx_file(NULL, idx, object_count, pack_data->sha1);
free(idx);
- git_SHA1_Final(pack_data->sha1, &ctx);
return tmpfile;
}
-static char *keep_pack(char *curr_index_name)
+static char *keep_pack(const char *curr_index_name)
{
static char name[PATH_MAX];
static const char *keep_msg = "fast-import";
@@ -935,6 +923,7 @@ static char *keep_pack(char *curr_index_name)
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;
}
@@ -957,15 +946,17 @@ static void end_packfile(void)
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,
- NULL, 0);
+ cur_pack_sha1, pack_size);
close(pack_data->pack_fd);
idx_name = keep_pack(create_index());
@@ -1013,29 +1004,6 @@ static void cycle_packfile(void)
start_packfile();
}
-static size_t encode_header(
- enum object_type type,
- uintmax_t size,
- unsigned char *hdr)
-{
- int n = 1;
- unsigned char c;
-
- if (type < OBJ_COMMIT || type > OBJ_REF_DELTA)
- die("bad type %d", type);
-
- c = (type << 4) | (size & 15);
- size >>= 4;
- while (size) {
- *hdr++ = c | 0x80;
- c = size & 0x7f;
- size >>= 7;
- n++;
- }
- *hdr = c;
- return n;
-}
-
static int store_object(
enum object_type type,
struct strbuf *dat,
@@ -1063,25 +1031,21 @@ static int store_object(
e = insert_object(sha1);
if (mark)
insert_mark(mark, e);
- if (e->offset) {
+ 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->offset = 1; /* just not zero! */
+ e->idx.offset = 1; /* just not zero! */
duplicate_count_by_type[type]++;
return 1;
}
- if (last && last->data.buf && last->depth < max_depth) {
+ 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, 0);
- if (delta && deltalen >= dat->len) {
- free(delta);
- delta = NULL;
- }
+ &deltalen, dat->len - 20);
} else
delta = NULL;
@@ -1101,7 +1065,7 @@ static int store_object(
deflateEnd(&s);
/* Determine if we should auto-checkpoint. */
- if ((pack_size + 60 + s.total_out) > max_packsize
+ 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. */
@@ -1127,36 +1091,40 @@ static int store_object(
e->type = type;
e->pack_id = pack_id;
- e->offset = pack_size;
+ e->idx.offset = pack_size;
object_count++;
object_count_by_type[type]++;
+ crc32_begin(pack_file);
+
if (delta) {
- unsigned long ofs = e->offset - last->offset;
+ 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_header(OBJ_OFS_DELTA, deltalen, hdr);
- write_or_die(pack_data->pack_fd, hdr, hdrlen);
+ 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);
- write_or_die(pack_data->pack_fd, hdr + pos, sizeof(hdr) - pos);
+ sha1write(pack_file, hdr + pos, sizeof(hdr) - pos);
pack_size += sizeof(hdr) - pos;
} else {
e->depth = 0;
- hdrlen = encode_header(type, dat->len, hdr);
- write_or_die(pack_data->pack_fd, hdr, hdrlen);
+ hdrlen = encode_in_pack_object_header(type, dat->len, hdr);
+ sha1write(pack_file, hdr, hdrlen);
pack_size += hdrlen;
}
- write_or_die(pack_data->pack_fd, out, s.total_out);
+ 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) {
@@ -1165,18 +1133,23 @@ static int store_object(
} else {
strbuf_swap(&last->data, dat);
}
- last->offset = e->offset;
+ last->offset = e->idx.offset;
last->depth = e->depth;
}
return 0;
}
-static void truncate_pack(off_t to)
+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)
@@ -1189,16 +1162,21 @@ static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark)
unsigned long hdrlen;
off_t offset;
git_SHA_CTX c;
+ git_SHA_CTX pack_file_ctx;
z_stream s;
int status = Z_OK;
/* Determine if we should auto-checkpoint. */
- if ((pack_size + 60 + len) > max_packsize
+ 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");
@@ -1206,10 +1184,12 @@ static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark)
git_SHA1_Init(&c);
git_SHA1_Update(&c, out_buf, hdrlen);
+ crc32_begin(pack_file);
+
memset(&s, 0, sizeof(s));
deflateInit(&s, pack_compression_level);
- hdrlen = encode_header(OBJ_BLOB, len, out_buf);
+ hdrlen = encode_in_pack_object_header(OBJ_BLOB, len, out_buf);
if (out_sz <= hdrlen)
die("impossibly large object header");
@@ -1233,7 +1213,7 @@ static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark)
if (!s.avail_out || status == Z_STREAM_END) {
size_t n = s.next_out - out_buf;
- write_or_die(pack_data->pack_fd, out_buf, n);
+ sha1write(pack_file, out_buf, n);
pack_size += n;
s.next_out = out_buf;
s.avail_out = out_sz;
@@ -1259,22 +1239,23 @@ static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark)
if (mark)
insert_mark(mark, e);
- if (e->offset) {
+ if (e->idx.offset) {
duplicate_count_by_type[OBJ_BLOB]++;
- truncate_pack(offset);
+ 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->offset = 1; /* just not zero! */
+ e->idx.offset = 1; /* just not zero! */
duplicate_count_by_type[OBJ_BLOB]++;
- truncate_pack(offset);
+ truncate_pack(offset, &pack_file_ctx);
} else {
e->depth = 0;
e->type = OBJ_BLOB;
e->pack_id = pack_id;
- e->offset = offset;
+ e->idx.offset = offset;
+ e->idx.crc32 = crc32_end(pack_file);
object_count++;
object_count_by_type[OBJ_BLOB]++;
}
@@ -1317,6 +1298,7 @@ static void *gfi_unpack_entry(
* 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
@@ -1326,7 +1308,7 @@ static void *gfi_unpack_entry(
*/
p->pack_size = pack_size + 20;
}
- return unpack_entry(p, oe->offset, &type, sizep);
+ return unpack_entry(p, oe->idx.offset, &type, sizep);
}
static const char *get_mode(const char *str, uint16_t *modep)
@@ -1457,7 +1439,7 @@ static void store_tree(struct tree_entry *root)
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->offset;
+ lo.offset = le->idx.offset;
lo.depth = t->delta_depth;
}
@@ -1479,6 +1461,20 @@ static void store_tree(struct tree_entry *root)
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,
@@ -1486,7 +1482,7 @@ static int tree_content_set(
const uint16_t mode,
struct tree_content *subtree)
{
- struct tree_content *t = root->tree;
+ struct tree_content *t;
const char *slash1;
unsigned int i, n;
struct tree_entry *e;
@@ -1501,9 +1497,12 @@ static int tree_content_set(
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(p, e->name->str_dat, n)) {
+ 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
@@ -1556,7 +1555,7 @@ static int tree_content_remove(
const char *p,
struct tree_entry *backup_leaf)
{
- struct tree_content *t = root->tree;
+ struct tree_content *t;
const char *slash1;
unsigned int i, n;
struct tree_entry *e;
@@ -1567,9 +1566,20 @@ static int tree_content_remove(
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(p, e->name->str_dat, n)) {
+ 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)
@@ -1606,7 +1616,7 @@ static int tree_content_get(
const char *p,
struct tree_entry *leaf)
{
- struct tree_content *t = root->tree;
+ struct tree_content *t;
const char *slash1;
unsigned int i, n;
struct tree_entry *e;
@@ -1617,9 +1627,12 @@ static int tree_content_get(
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(p, e->name->str_dat, n)) {
+ 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))
@@ -1708,14 +1721,14 @@ static void dump_marks_helper(FILE *f,
if (m->shift) {
for (k = 0; k < 1024; k++) {
if (m->data.sets[k])
- dump_marks_helper(f, (base + k) << m->shift,
+ 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]->sha1));
+ sha1_to_hex(m->data.marked[k]->idx.sha1));
}
}
}
@@ -1774,7 +1787,11 @@ static void read_marks(void)
{
char line[512];
FILE *f = fopen(import_marks_file, "r");
- if (!f)
+ 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;
@@ -1798,7 +1815,7 @@ static void read_marks(void)
e = insert_object(sha1);
e->type = type;
e->pack_id = MAX_PACK_ID;
- e->offset = 1; /* just not zero! */
+ e->idx.offset = 1; /* just not zero! */
}
insert_mark(mark, e);
}
@@ -1815,7 +1832,7 @@ static int read_next_command(void)
return EOF;
}
- do {
+ for (;;) {
if (unread_command_buf) {
unread_command_buf = 0;
} else {
@@ -1848,9 +1865,14 @@ static int read_next_command(void)
rc->prev->next = rc;
cmd_tail = rc;
}
- } while (command_buf.buf[0] == '#');
-
- return 0;
+ 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)
@@ -2173,6 +2195,7 @@ static void file_change_m(struct branch *b)
case S_IFREG | 0644:
case S_IFREG | 0755:
case S_IFLNK:
+ case S_IFDIR:
case S_IFGITLINK:
/* ok */
break;
@@ -2183,7 +2206,7 @@ static void file_change_m(struct branch *b)
if (*p == ':') {
char *x;
oe = find_mark(strtoumax(p + 1, &x, 10));
- hashcpy(sha1, oe->sha1);
+ hashcpy(sha1, oe->idx.sha1);
p = x;
} else if (!prefixcmp(p, "inline")) {
inline_data = 1;
@@ -2204,6 +2227,12 @@ static void file_change_m(struct branch *b)
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",
@@ -2218,25 +2247,34 @@ static void file_change_m(struct branch *b)
* 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 if (oe) {
- if (oe->type != OBJ_BLOB)
- die("Not a blob (actually a %s): %s",
- typename(oe->type), command_buf.buf);
} else {
- enum object_type type = sha1_object_info(sha1, NULL);
+ 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("Blob not found: %s", command_buf.buf);
- if (type != OBJ_BLOB)
- die("Not a blob (actually a %s): %s",
- typename(type), command_buf.buf);
+ 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);
}
@@ -2295,6 +2333,13 @@ static void file_change_cr(struct branch *b, int rename)
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,
@@ -2316,7 +2361,7 @@ static void note_change_n(struct branch *b, unsigned char old_fanout)
if (*p == ':') {
char *x;
oe = find_mark(strtoumax(p + 1, &x, 10));
- hashcpy(sha1, oe->sha1);
+ hashcpy(sha1, oe->idx.sha1);
p = x;
} else if (!prefixcmp(p, "inline")) {
inline_data = 1;
@@ -2339,7 +2384,7 @@ static void note_change_n(struct branch *b, unsigned char old_fanout)
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->sha1);
+ 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,
@@ -2446,7 +2491,7 @@ static int parse_from(struct branch *b)
struct object_entry *oe = find_mark(idnum);
if (oe->type != OBJ_COMMIT)
die("Mark :%" PRIuMAX " not a commit", idnum);
- hashcpy(b->sha1, oe->sha1);
+ hashcpy(b->sha1, oe->idx.sha1);
if (oe->pack_id != MAX_PACK_ID) {
unsigned long size;
char *buf = gfi_unpack_entry(oe, &size);
@@ -2481,7 +2526,7 @@ static struct hash_list *parse_merge(unsigned int *count)
struct object_entry *oe = find_mark(idnum);
if (oe->type != OBJ_COMMIT)
die("Mark :%" PRIuMAX " not a commit", idnum);
- hashcpy(n->sha1, oe->sha1);
+ hashcpy(n->sha1, oe->idx.sha1);
} else if (!get_sha1(from, n->sha1)) {
unsigned long size;
char *buf = read_object_with_reference(n->sha1,
@@ -2560,6 +2605,8 @@ static void parse_new_commit(void)
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;
@@ -2639,7 +2686,7 @@ static void parse_new_tag(void)
from_mark = strtoumax(from + 1, NULL, 10);
oe = find_mark(from_mark);
type = oe->type;
- hashcpy(sha1, oe->sha1);
+ hashcpy(sha1, oe->idx.sha1);
} else if (!get_sha1(from, sha1)) {
unsigned long size;
char *buf;
@@ -2708,14 +2755,242 @@ static void parse_reset_branch(void)
unread_command_buf = 1;
}
-static void parse_checkpoint(void)
+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 ") ||
+ get_sha1_hex(buf + strlen("object "), sha1))
+ die("Invalid SHA1 in tag: %s", command_buf.buf);
+ break;
+ case OBJ_COMMIT:
+ if (size < 40 + strlen("tree ") ||
+ get_sha1_hex(buf + strlen("tree "), sha1))
+ die("Invalid SHA1 in commit: %s", command_buf.buf);
+ }
+
+ free(buf);
+ return find_object(sha1);
+}
+
+static struct object_entry *parse_treeish_dataref(const char **p)
+{
+ unsigned char sha1[20];
+ struct object_entry *e;
+
+ if (**p == ':') { /* <mark> */
+ char *endptr;
+ e = find_mark(strtoumax(*p + 1, &endptr, 10));
+ if (endptr == *p + 1)
+ die("Invalid mark: %s", command_buf.buf);
+ if (!e)
+ die("Unknown mark: %s", command_buf.buf);
+ *p = endptr;
+ hashcpy(sha1, e->idx.sha1);
+ } else { /* <sha1> */
+ if (get_sha1_hex(*p, sha1))
+ die("Invalid SHA1: %s", command_buf.buf);
+ e = find_object(sha1);
+ *p += 40;
+ }
+
+ while (!e || e->type != OBJ_TREE)
+ e = dereference(e, sha1);
+ return e;
+}
+
+static void print_ls(int mode, const unsigned char *sha1, 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, type, sha1_to_hex(sha1));
+ quote_c_style(path, &line, NULL, 0);
+ strbuf_addch(&line, '\n');
+ }
+ cat_blob_write(line.buf, line.len);
+}
+
+static void parse_ls(struct branch *b)
+{
+ const char *p;
+ struct tree_entry *root = NULL;
+ struct tree_entry leaf = {NULL};
+
+ /* ls SP (<treeish> SP)? <path> */
+ p = command_buf.buf + strlen("ls ");
+ 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();
+ hashcpy(root->versions[1].sha1, e->idx.sha1);
+ load_tree(root);
+ if (*p++ != ' ')
+ die("Missing space after tree-ish: %s", command_buf.buf);
+ }
+ 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);
+ /*
+ * 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].sha1, p);
+ 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();
}
@@ -2737,7 +3012,8 @@ static char* make_fast_import_path(const char *path)
return strbuf_detach(&abs_path, NULL);
}
-static void option_import_marks(const char *marks, int from_stream)
+static void option_import_marks(const char *marks,
+ int from_stream, int ignore_missing)
{
if (import_marks_file) {
if (from_stream)
@@ -2749,7 +3025,9 @@ static void option_import_marks(const char *marks, int from_stream)
}
import_marks_file = make_fast_import_path(marks);
+ safe_create_leading_directories_const(import_marks_file);
import_marks_file_from_stream = from_stream;
+ import_marks_file_ignore_missing = ignore_missing;
}
static void option_date_format(const char *fmt)
@@ -2764,21 +3042,39 @@ static void option_date_format(const char *fmt)
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 = strtoul(depth, NULL, 0);
+ 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 = strtoul(branches, NULL, 0);
+ max_active_branches = ulong_arg("--active-branches", branches);
}
static void option_export_marks(const char *marks)
{
export_marks_file = make_fast_import_path(marks);
+ safe_create_leading_directories_const(export_marks_file);
+}
+
+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)
@@ -2831,15 +3127,22 @@ static int parse_one_feature(const char *feature, int from_stream)
if (!prefixcmp(feature, "date-format=")) {
option_date_format(feature + 12);
} else if (!prefixcmp(feature, "import-marks=")) {
- option_import_marks(feature + 13, from_stream);
+ option_import_marks(feature + 13, from_stream, 0);
+ } else if (!prefixcmp(feature, "import-marks-if-exists=")) {
+ option_import_marks(feature + strlen("import-marks-if-exists="),
+ from_stream, 1);
} else if (!prefixcmp(feature, "export-marks=")) {
option_export_marks(feature + 13);
+ } else if (!strcmp(feature, "cat-blob")) {
+ ; /* Don't die - this feature is supported */
} else if (!prefixcmp(feature, "relative-marks")) {
relative_marks_paths = 1;
} else if (!prefixcmp(feature, "no-relative-marks")) {
relative_marks_paths = 0;
} else if (!prefixcmp(feature, "force")) {
force_update = 1;
+ } else if (!strcmp(feature, "notes") || !strcmp(feature, "ls")) {
+ ; /* do nothing; we have the feature */
} else {
return 0;
}
@@ -2891,15 +3194,22 @@ static int git_pack_config(const char *k, const char *v, void *cb)
pack_compression_seen = 1;
return 0;
}
- if (!strcmp(k, "core.bigfilethreshold")) {
- long n = git_config_int(k, v);
- big_file_threshold = 0 < n ? n : 0;
+ if (!strcmp(k, "pack.indexversion")) {
+ pack_idx_default_version = git_config_int(k, v);
+ if (pack_idx_default_version > 2)
+ die("bad pack.indexversion=%"PRIu32,
+ pack_idx_default_version);
+ return 0;
+ }
+ if (!strcmp(k, "pack.packsizelimit")) {
+ max_packsize = git_config_ulong(k, v);
+ return 0;
}
return git_default_config(k, v, cb);
}
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]";
+"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)
{
@@ -2917,6 +3227,11 @@ static void parse_argv(void)
if (parse_one_feature(a + 2, 0))
continue;
+ if (!prefixcmp(a + 2, "cat-blob-fd=")) {
+ option_cat_blob_fd(a + 2 + strlen("cat-blob-fd="));
+ continue;
+ }
+
die("unknown option %s", a);
}
if (i != global_argc)
@@ -2959,9 +3274,12 @@ int main(int argc, const char **argv)
prepare_packed_git();
start_packfile();
set_die_routine(die_nicely);
+ set_checkpoint_signal();
while (read_next_command() != EOF) {
if (!strcmp("blob", command_buf.buf))
parse_new_blob();
+ else if (!prefixcmp(command_buf.buf, "ls "))
+ parse_ls(NULL);
else if (!prefixcmp(command_buf.buf, "commit "))
parse_new_commit();
else if (!prefixcmp(command_buf.buf, "tag "))
@@ -2980,6 +3298,9 @@ int main(int argc, const char **argv)
/* ignore non-git options*/;
else
die("Unsupported command: %s", command_buf.buf);
+
+ if (checkpoint_requested)
+ checkpoint();
}
/* argv hasn't been parsed yet, do so */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 14:30:54 +0000