#include "dir.h"
#include "tree.h"
#include "commit.h"
-#include "diff.h"
-#include "diffcore.h"
-#include "revision.h"
#include "blob.h"
+#include "resolve-undo.h"
+
+static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
/* Index extensions.
*
#define CACHE_EXT(s) ( (s[0]<<24)|(s[1]<<16)|(s[2]<<8)|(s[3]) )
#define CACHE_EXT_TREE 0x54524545 /* "TREE" */
+#define CACHE_EXT_RESOLVE_UNDO 0x52455543 /* "REUC" */
struct index_state the_index;
*/
void fill_stat_cache_info(struct cache_entry *ce, struct stat *st)
{
- ce->ce_ctime = st->st_ctime;
- ce->ce_mtime = st->st_mtime;
+ ce->ce_ctime.sec = (unsigned int)st->st_ctime;
+ ce->ce_mtime.sec = (unsigned int)st->st_mtime;
+ ce->ce_ctime.nsec = ST_CTIME_NSEC(*st);
+ ce->ce_mtime.nsec = ST_MTIME_NSEC(*st);
ce->ce_dev = st->st_dev;
ce->ce_ino = st->st_ino;
ce->ce_uid = st->st_uid;
static int ce_compare_link(struct cache_entry *ce, size_t expected_size)
{
int match = -1;
- char *target;
void *buffer;
unsigned long size;
enum object_type type;
- int len;
+ struct strbuf sb = STRBUF_INIT;
- target = xmalloc(expected_size);
- len = readlink(ce->name, target, expected_size);
- if (len != expected_size) {
- free(target);
+ if (strbuf_readlink(&sb, ce->name, expected_size))
return -1;
- }
+
buffer = read_sha1_file(ce->sha1, &type, &size);
- if (!buffer) {
- free(target);
- return -1;
+ if (buffer) {
+ if (size == sb.len)
+ match = memcmp(buffer, sb.buf, size);
+ free(buffer);
}
- if (size == expected_size)
- match = memcmp(buffer, target, size);
- free(buffer);
- free(target);
+ strbuf_release(&sb);
return match;
}
return 0;
}
-int is_empty_blob_sha1(const unsigned char *sha1)
+static int is_empty_blob_sha1(const unsigned char *sha1)
{
static const unsigned char empty_blob_sha1[20] = {
0xe6,0x9d,0xe2,0x9b,0xb2,0xd1,0xd6,0x43,0x4b,0x8b,
default:
die("internal error: ce_mode is %o", ce->ce_mode);
}
- if (ce->ce_mtime != (unsigned int) st->st_mtime)
+ if (ce->ce_mtime.sec != (unsigned int)st->st_mtime)
changed |= MTIME_CHANGED;
- if (trust_ctime && ce->ce_ctime != (unsigned int) st->st_ctime)
+ if (trust_ctime && ce->ce_ctime.sec != (unsigned int)st->st_ctime)
changed |= CTIME_CHANGED;
+#ifdef USE_NSEC
+ if (ce->ce_mtime.nsec != ST_MTIME_NSEC(*st))
+ changed |= MTIME_CHANGED;
+ if (trust_ctime && ce->ce_ctime.nsec != ST_CTIME_NSEC(*st))
+ changed |= CTIME_CHANGED;
+#endif
+
if (ce->ce_uid != (unsigned int) st->st_uid ||
ce->ce_gid != (unsigned int) st->st_gid)
changed |= OWNER_CHANGED;
static int is_racy_timestamp(const struct index_state *istate, struct cache_entry *ce)
{
return (!S_ISGITLINK(ce->ce_mode) &&
- istate->timestamp &&
- ((unsigned int)istate->timestamp) <= ce->ce_mtime);
+ istate->timestamp.sec &&
+#ifdef USE_NSEC
+ /* nanosecond timestamped files can also be racy! */
+ (istate->timestamp.sec < ce->ce_mtime.sec ||
+ (istate->timestamp.sec == ce->ce_mtime.sec &&
+ istate->timestamp.nsec <= ce->ce_mtime.nsec))
+#else
+ istate->timestamp.sec <= ce->ce_mtime.sec
+#endif
+ );
}
int ie_match_stat(const struct index_state *istate,
{
unsigned int changed;
int ignore_valid = options & CE_MATCH_IGNORE_VALID;
+ int ignore_skip_worktree = options & CE_MATCH_IGNORE_SKIP_WORKTREE;
int assume_racy_is_modified = options & CE_MATCH_RACY_IS_DIRTY;
/*
* If it's marked as always valid in the index, it's
* valid whatever the checked-out copy says.
+ *
+ * skip-worktree has the same effect with higher precedence
*/
+ if (!ignore_skip_worktree && ce_skip_worktree(ce))
+ return 0;
if (!ignore_valid && (ce->ce_flags & CE_VALID))
return 0;
+ /*
+ * Intent-to-add entries have not been added, so the index entry
+ * by definition never matches what is in the work tree until it
+ * actually gets added.
+ */
+ if (ce->ce_flags & CE_INTENT_TO_ADD)
+ return DATA_CHANGED | TYPE_CHANGED | MODE_CHANGED;
+
changed = ce_match_stat_basic(ce, st);
/*
{
struct cache_entry *ce = istate->cache[pos];
+ record_resolve_undo(istate, ce);
remove_name_hash(ce);
istate->cache_changed = 1;
istate->cache_nr--;
return 1;
}
+/*
+ * Remove all cache ententries marked for removal, that is where
+ * CE_REMOVE is set in ce_flags. This is much more effective than
+ * calling remove_index_entry_at() for each entry to be removed.
+ */
+void remove_marked_cache_entries(struct index_state *istate)
+{
+ struct cache_entry **ce_array = istate->cache;
+ unsigned int i, j;
+
+ for (i = j = 0; i < istate->cache_nr; i++) {
+ if (ce_array[i]->ce_flags & CE_REMOVE)
+ remove_name_hash(ce_array[i]);
+ else
+ ce_array[j++] = ce_array[i];
+ }
+ istate->cache_changed = 1;
+ istate->cache_nr = j;
+}
+
int remove_file_from_index(struct index_state *istate, const char *path)
{
int pos = index_name_pos(istate, path, strlen(path));
int size, namelen, was_same;
mode_t st_mode = st->st_mode;
struct cache_entry *ce, *alias;
- unsigned ce_option = CE_MATCH_IGNORE_VALID|CE_MATCH_RACY_IS_DIRTY;
+ unsigned ce_option = CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE|CE_MATCH_RACY_IS_DIRTY;
int verbose = flags & (ADD_CACHE_VERBOSE | ADD_CACHE_PRETEND);
int pretend = flags & ADD_CACHE_PRETEND;
int intent_only = flags & ADD_CACHE_INTENT;
ce->ce_flags = namelen;
if (!intent_only)
fill_stat_cache_info(ce, st);
+ else
+ ce->ce_flags |= CE_INTENT_TO_ADD;
if (trust_executable_bit && has_symlinks)
ce->ce_mode = create_ce_mode(st_mode);
if (alias && !ce_stage(alias) && !ie_match_stat(istate, alias, st, ce_option)) {
/* Nothing changed, really */
free(ce);
- ce_mark_uptodate(alias);
+ if (!S_ISGITLINK(alias->ce_mode))
+ ce_mark_uptodate(alias);
alias->ce_flags |= CE_ADDED;
return 0;
}
{
struct stat st;
if (lstat(path, &st))
- die("%s: unable to stat (%s)", path, strerror(errno));
+ die_errno("unable to stat '%s'", path);
return add_to_index(istate, path, &st, flags);
}
struct cache_entry *updated;
int changed, size;
int ignore_valid = options & CE_MATCH_IGNORE_VALID;
+ int ignore_skip_worktree = options & CE_MATCH_IGNORE_SKIP_WORKTREE;
if (ce_uptodate(ce))
return ce;
/*
- * CE_VALID means the user promised us that the change to
- * the work tree does not matter and told us not to worry.
+ * CE_VALID or CE_SKIP_WORKTREE means the user promised us
+ * that the change to the work tree does not matter and told
+ * us not to worry.
*/
+ if (!ignore_skip_worktree && ce_skip_worktree(ce)) {
+ ce_mark_uptodate(ce);
+ return ce;
+ }
if (!ignore_valid && (ce->ce_flags & CE_VALID)) {
ce_mark_uptodate(ce);
return ce;
* because CE_UPTODATE flag is in-core only;
* we are not going to write this change out.
*/
- ce_mark_uptodate(ce);
+ if (!S_ISGITLINK(ce->ce_mode))
+ ce_mark_uptodate(ce);
return ce;
}
}
return updated;
}
-int refresh_index(struct index_state *istate, unsigned int flags, const char **pathspec, char *seen)
+static void show_file(const char * fmt, const char * name, int in_porcelain,
+ int * first, char *header_msg)
+{
+ if (in_porcelain && *first && header_msg) {
+ printf("%s\n", header_msg);
+ *first=0;
+ }
+ printf(fmt, name);
+}
+
+int refresh_index(struct index_state *istate, unsigned int flags, const char **pathspec,
+ char *seen, char *header_msg)
{
int i;
int has_errors = 0;
int quiet = (flags & REFRESH_QUIET) != 0;
int not_new = (flags & REFRESH_IGNORE_MISSING) != 0;
int ignore_submodules = (flags & REFRESH_IGNORE_SUBMODULES) != 0;
+ int first = 1;
+ int in_porcelain = (flags & REFRESH_IN_PORCELAIN);
unsigned int options = really ? CE_MATCH_IGNORE_VALID : 0;
- const char *needs_update_message;
+ const char *needs_update_fmt;
+ const char *needs_merge_fmt;
- needs_update_message = ((flags & REFRESH_SAY_CHANGED)
- ? "locally modified" : "needs update");
+ needs_update_fmt = (in_porcelain ? "M\t%s\n" : "%s: needs update\n");
+ needs_merge_fmt = (in_porcelain ? "U\t%s\n" : "%s: needs merge\n");
for (i = 0; i < istate->cache_nr; i++) {
struct cache_entry *ce, *new;
int cache_errno = 0;
i--;
if (allow_unmerged)
continue;
- printf("%s: needs merge\n", ce->name);
+ show_file(needs_merge_fmt, ce->name, in_porcelain, &first, header_msg);
has_errors = 1;
continue;
}
}
if (quiet)
continue;
- printf("%s: %s\n", ce->name, needs_update_message);
+ show_file(needs_update_fmt, ce->name, in_porcelain, &first, header_msg);
has_errors = 1;
continue;
}
return has_errors;
}
-struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
+static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
{
return refresh_cache_ent(&the_index, ce, really, NULL);
}
if (hdr->hdr_signature != htonl(CACHE_SIGNATURE))
return error("bad signature");
- if (hdr->hdr_version != htonl(2))
+ if (hdr->hdr_version != htonl(2) && hdr->hdr_version != htonl(3))
return error("bad index version");
git_SHA1_Init(&c);
git_SHA1_Update(&c, hdr, size - 20);
case CACHE_EXT_TREE:
istate->cache_tree = cache_tree_read(data, sz);
break;
+ case CACHE_EXT_RESOLVE_UNDO:
+ istate->resolve_undo = resolve_undo_read(data, sz);
+ break;
default:
if (*ext < 'A' || 'Z' < *ext)
return error("index uses %.4s extension, which we do not understand",
static void convert_from_disk(struct ondisk_cache_entry *ondisk, struct cache_entry *ce)
{
size_t len;
+ const char *name;
- ce->ce_ctime = ntohl(ondisk->ctime.sec);
- ce->ce_mtime = ntohl(ondisk->mtime.sec);
+ ce->ce_ctime.sec = ntohl(ondisk->ctime.sec);
+ ce->ce_mtime.sec = ntohl(ondisk->mtime.sec);
+ ce->ce_ctime.nsec = ntohl(ondisk->ctime.nsec);
+ ce->ce_mtime.nsec = ntohl(ondisk->mtime.nsec);
ce->ce_dev = ntohl(ondisk->dev);
ce->ce_ino = ntohl(ondisk->ino);
ce->ce_mode = ntohl(ondisk->mode);
/* On-disk flags are just 16 bits */
ce->ce_flags = ntohs(ondisk->flags);
- /* For future extension: we do not understand this entry yet */
- if (ce->ce_flags & CE_EXTENDED)
- die("Unknown index entry format");
hashcpy(ce->sha1, ondisk->sha1);
len = ce->ce_flags & CE_NAMEMASK;
+
+ if (ce->ce_flags & CE_EXTENDED) {
+ struct ondisk_cache_entry_extended *ondisk2;
+ int extended_flags;
+ ondisk2 = (struct ondisk_cache_entry_extended *)ondisk;
+ extended_flags = ntohs(ondisk2->flags2) << 16;
+ /* We do not yet understand any bit out of CE_EXTENDED_FLAGS */
+ if (extended_flags & ~CE_EXTENDED_FLAGS)
+ die("Unknown index entry format %08x", extended_flags);
+ ce->ce_flags |= extended_flags;
+ name = ondisk2->name;
+ }
+ else
+ name = ondisk->name;
+
if (len == CE_NAMEMASK)
- len = strlen(ondisk->name);
+ len = strlen(name);
/*
* NEEDSWORK: If the original index is crafted, this copy could
* go unchecked.
*/
- memcpy(ce->name, ondisk->name, len + 1);
+ memcpy(ce->name, name, len + 1);
}
static inline size_t estimate_cache_size(size_t ondisk_size, unsigned int entries)
return istate->cache_nr;
errno = ENOENT;
- istate->timestamp = 0;
+ istate->timestamp.sec = 0;
+ istate->timestamp.nsec = 0;
fd = open(path, O_RDONLY);
if (fd < 0) {
if (errno == ENOENT)
return 0;
- die("index file open failed (%s)", strerror(errno));
+ die_errno("index file open failed");
}
if (fstat(fd, &st))
- die("cannot stat the open index (%s)", strerror(errno));
+ die_errno("cannot stat the open index");
errno = EINVAL;
mmap_size = xsize_t(st.st_size);
mmap = xmmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
close(fd);
if (mmap == MAP_FAILED)
- die("unable to map index file");
+ die_errno("unable to map index file");
hdr = mmap;
if (verify_hdr(hdr, mmap_size) < 0)
src_offset += ondisk_ce_size(ce);
dst_offset += ce_size(ce);
}
- istate->timestamp = st.st_mtime;
+ istate->timestamp.sec = st.st_mtime;
+ istate->timestamp.nsec = ST_MTIME_NSEC(st);
+
while (src_offset <= mmap_size - 20 - 8) {
/* After an array of active_nr index entries,
* there can be arbitrary number of extended
* extension name (4-byte) and section length
* in 4-byte network byte order.
*/
- unsigned long extsize;
+ uint32_t extsize;
memcpy(&extsize, (char *)mmap + src_offset + 4, 4);
extsize = ntohl(extsize);
if (read_index_extension(istate,
die("index file corrupt");
}
+int is_index_unborn(struct index_state *istate)
+{
+ return (!istate->cache_nr && !istate->alloc && !istate->timestamp.sec);
+}
+
int discard_index(struct index_state *istate)
{
+ resolve_undo_clear_index(istate);
istate->cache_nr = 0;
istate->cache_changed = 0;
- istate->timestamp = 0;
+ istate->timestamp.sec = 0;
+ istate->timestamp.nsec = 0;
istate->name_hash_initialized = 0;
free_hash(&istate->name_hash);
cache_tree_free(&(istate->cache_tree));
{
int size = ondisk_ce_size(ce);
struct ondisk_cache_entry *ondisk = xcalloc(1, size);
+ char *name;
- ondisk->ctime.sec = htonl(ce->ce_ctime);
- ondisk->ctime.nsec = 0;
- ondisk->mtime.sec = htonl(ce->ce_mtime);
- ondisk->mtime.nsec = 0;
+ ondisk->ctime.sec = htonl(ce->ce_ctime.sec);
+ ondisk->mtime.sec = htonl(ce->ce_mtime.sec);
+ ondisk->ctime.nsec = htonl(ce->ce_ctime.nsec);
+ ondisk->mtime.nsec = htonl(ce->ce_mtime.nsec);
ondisk->dev = htonl(ce->ce_dev);
ondisk->ino = htonl(ce->ce_ino);
ondisk->mode = htonl(ce->ce_mode);
ondisk->size = htonl(ce->ce_size);
hashcpy(ondisk->sha1, ce->sha1);
ondisk->flags = htons(ce->ce_flags);
- memcpy(ondisk->name, ce->name, ce_namelen(ce));
+ if (ce->ce_flags & CE_EXTENDED) {
+ struct ondisk_cache_entry_extended *ondisk2;
+ ondisk2 = (struct ondisk_cache_entry_extended *)ondisk;
+ ondisk2->flags2 = htons((ce->ce_flags & CE_EXTENDED_FLAGS) >> 16);
+ name = ondisk2->name;
+ }
+ else
+ name = ondisk->name;
+ memcpy(name, ce->name, ce_namelen(ce));
return ce_write(c, fd, ondisk, size);
}
-int write_index(const struct index_state *istate, int newfd)
+int write_index(struct index_state *istate, int newfd)
{
git_SHA_CTX c;
struct cache_header hdr;
- int i, err, removed;
+ int i, err, removed, extended;
struct cache_entry **cache = istate->cache;
int entries = istate->cache_nr;
+ struct stat st;
- for (i = removed = 0; i < entries; i++)
+ for (i = removed = extended = 0; i < entries; i++) {
if (cache[i]->ce_flags & CE_REMOVE)
removed++;
+ /* reduce extended entries if possible */
+ cache[i]->ce_flags &= ~CE_EXTENDED;
+ if (cache[i]->ce_flags & CE_EXTENDED_FLAGS) {
+ extended++;
+ cache[i]->ce_flags |= CE_EXTENDED;
+ }
+ }
+
hdr.hdr_signature = htonl(CACHE_SIGNATURE);
- hdr.hdr_version = htonl(2);
+ /* for extended format, increase version so older git won't try to read it */
+ hdr.hdr_version = htonl(extended ? 3 : 2);
hdr.hdr_entries = htonl(entries - removed);
git_SHA1_Init(&c);
if (err)
return -1;
}
- return ce_flush(&c, newfd);
+ if (istate->resolve_undo) {
+ struct strbuf sb = STRBUF_INIT;
+
+ resolve_undo_write(&sb, istate->resolve_undo);
+ err = write_index_ext_header(&c, newfd, CACHE_EXT_RESOLVE_UNDO,
+ sb.len) < 0
+ || ce_write(&c, newfd, sb.buf, sb.len) < 0;
+ strbuf_release(&sb);
+ if (err)
+ return -1;
+ }
+
+ if (ce_flush(&c, newfd) || fstat(newfd, &st))
+ return -1;
+ istate->timestamp.sec = (unsigned int)st.st_mtime;
+ istate->timestamp.nsec = ST_MTIME_NSEC(st);
+ return 0;
}
/*
* Read the index file that is potentially unmerged into given
- * index_state, dropping any unmerged entries. Returns true is
+ * index_state, dropping any unmerged entries. Returns true if
* the index is unmerged. Callers who want to refuse to work
* from an unmerged state can call this and check its return value,
* instead of calling read_cache().
len = strlen(ce->name);
size = cache_entry_size(len);
new_ce = xcalloc(1, size);
- hashcpy(new_ce->sha1, ce->sha1);
memcpy(new_ce->name, ce->name, len);
- new_ce->ce_flags = create_ce_flags(len, 0);
+ new_ce->ce_flags = create_ce_flags(len, 0) | CE_CONFLICTED;
new_ce->ce_mode = ce->ce_mode;
if (add_index_entry(istate, new_ce, 0))
return error("%s: cannot drop to stage #0",
return unmerged;
}
-struct update_callback_data
-{
- int flags;
- int add_errors;
-};
-
-static void update_callback(struct diff_queue_struct *q,
- struct diff_options *opt, void *cbdata)
-{
- int i;
- struct update_callback_data *data = cbdata;
-
- for (i = 0; i < q->nr; i++) {
- struct diff_filepair *p = q->queue[i];
- const char *path = p->one->path;
- switch (p->status) {
- default:
- die("unexpected diff status %c", p->status);
- case DIFF_STATUS_UNMERGED:
- case DIFF_STATUS_MODIFIED:
- case DIFF_STATUS_TYPE_CHANGED:
- if (add_file_to_index(&the_index, path, data->flags)) {
- if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
- die("updating files failed");
- data->add_errors++;
- }
- break;
- case DIFF_STATUS_DELETED:
- if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
- break;
- if (!(data->flags & ADD_CACHE_PRETEND))
- remove_file_from_index(&the_index, path);
- if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
- printf("remove '%s'\n", path);
- break;
- }
- }
-}
-
-int add_files_to_cache(const char *prefix, const char **pathspec, int flags)
-{
- struct update_callback_data data;
- struct rev_info rev;
- init_revisions(&rev, prefix);
- setup_revisions(0, NULL, &rev, NULL);
- rev.prune_data = pathspec;
- rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
- rev.diffopt.format_callback = update_callback;
- data.flags = flags;
- data.add_errors = 0;
- rev.diffopt.format_callback_data = &data;
- run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
- return !!data.add_errors;
-}
-
/*
* Returns 1 if the path is an "other" path with respect to
* the index; that is, the path is not mentioned in the index at all,