#include "varint.h"
#include "split-index.h"
#include "utf8.h"
+#include "fsmonitor.h"
/* Mask for the name length in ce_flags in the on-disk index */
#define CACHE_EXT_RESOLVE_UNDO 0x52455543 /* "REUC" */
#define CACHE_EXT_LINK 0x6c696e6b /* "link" */
#define CACHE_EXT_UNTRACKED 0x554E5452 /* "UNTR" */
+#define CACHE_EXT_FSMONITOR 0x46534D4E /* "FSMN" */
/* changes that can be kept in $GIT_DIR/index (basically all extensions) */
#define EXTMASK (RESOLVE_UNDO_CHANGED | CACHE_TREE_CHANGED | \
CE_ENTRY_ADDED | CE_ENTRY_REMOVED | CE_ENTRY_CHANGED | \
- SPLIT_INDEX_ORDERED | UNTRACKED_CHANGED)
+ SPLIT_INDEX_ORDERED | UNTRACKED_CHANGED | FSMONITOR_CHANGED)
struct index_state the_index;
static const char *alternate_index_output;
free(old);
set_index_entry(istate, nr, ce);
ce->ce_flags |= CE_UPDATE_IN_BASE;
+ mark_fsmonitor_invalid(istate, ce);
istate->cache_changed |= CE_ENTRY_CHANGED;
}
if (assume_unchanged)
ce->ce_flags |= CE_VALID;
- if (S_ISREG(st->st_mode))
+ if (S_ISREG(st->st_mode)) {
ce_mark_uptodate(ce);
+ mark_fsmonitor_valid(ce);
+ }
}
static int ce_compare_data(const struct cache_entry *ce, struct stat *st)
static int ce_compare_gitlink(const struct cache_entry *ce)
{
- unsigned char sha1[20];
+ struct object_id oid;
/*
* We don't actually require that the .git directory
*
* If so, we consider it always to match.
*/
- if (resolve_gitlink_ref(ce->name, "HEAD", sha1) < 0)
+ if (resolve_gitlink_ref(ce->name, "HEAD", &oid) < 0)
return 0;
- return hashcmp(sha1, ce->oid.hash);
+ return oidcmp(&oid, &ce->oid);
}
static int ce_modified_check_fs(const struct cache_entry *ce, struct stat *st)
return match_stat_data(sd, st);
}
-int ie_match_stat(const struct index_state *istate,
+int ie_match_stat(struct index_state *istate,
const struct cache_entry *ce, struct stat *st,
unsigned int options)
{
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;
+ int ignore_fsmonitor = options & CE_MATCH_IGNORE_FSMONITOR;
+ if (!ignore_fsmonitor)
+ refresh_fsmonitor(istate);
/*
* If it's marked as always valid in the index, it's
* valid whatever the checked-out copy says.
return 0;
if (!ignore_valid && (ce->ce_flags & CE_VALID))
return 0;
+ if (!ignore_fsmonitor && (ce->ce_flags & CE_FSMONITOR_VALID))
+ return 0;
/*
* Intent-to-add entries have not been added, so the index entry
return changed;
}
-int ie_modified(const struct index_state *istate,
+int ie_modified(struct index_state *istate,
const struct cache_entry *ce,
struct stat *st, unsigned int options)
{
{
int size, namelen, was_same;
mode_t st_mode = st->st_mode;
- struct cache_entry *ce, *alias;
+ struct cache_entry *ce, *alias = NULL;
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;
int add_option = (ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE|
(intent_only ? ADD_CACHE_NEW_ONLY : 0));
+ int newflags = HASH_WRITE_OBJECT;
+
+ if (flags & HASH_RENORMALIZE)
+ newflags |= HASH_RENORMALIZE;
if (!S_ISREG(st_mode) && !S_ISLNK(st_mode) && !S_ISDIR(st_mode))
return error("%s: can only add regular files, symbolic links or git-directories", path);
if (ignore_case) {
adjust_dirname_case(istate, ce->name);
}
+ if (!(flags & HASH_RENORMALIZE)) {
+ alias = index_file_exists(istate, ce->name,
+ ce_namelen(ce), ignore_case);
+ if (alias &&
+ !ce_stage(alias) &&
+ !ie_match_stat(istate, alias, st, ce_option)) {
+ /* Nothing changed, really */
+ if (!S_ISGITLINK(alias->ce_mode))
+ ce_mark_uptodate(alias);
+ alias->ce_flags |= CE_ADDED;
- alias = index_file_exists(istate, ce->name, ce_namelen(ce), ignore_case);
- if (alias && !ce_stage(alias) && !ie_match_stat(istate, alias, st, ce_option)) {
- /* Nothing changed, really */
- if (!S_ISGITLINK(alias->ce_mode))
- ce_mark_uptodate(alias);
- alias->ce_flags |= CE_ADDED;
-
- free(ce);
- return 0;
+ free(ce);
+ return 0;
+ }
}
if (!intent_only) {
- if (index_path(&ce->oid, path, st, HASH_WRITE_OBJECT)) {
+ if (index_path(&ce->oid, path, st, newflags)) {
free(ce);
return error("unable to index file %s", path);
}
}
cache_tree_invalidate_path(istate, ce->name);
ce->ce_flags |= CE_UPDATE_IN_BASE;
+ mark_fsmonitor_invalid(istate, ce);
istate->cache_changed |= CE_ENTRY_CHANGED;
return 0;
int ignore_valid = options & CE_MATCH_IGNORE_VALID;
int ignore_skip_worktree = options & CE_MATCH_IGNORE_SKIP_WORKTREE;
int ignore_missing = options & CE_MATCH_IGNORE_MISSING;
+ int ignore_fsmonitor = options & CE_MATCH_IGNORE_FSMONITOR;
if (!refresh || ce_uptodate(ce))
return ce;
+ if (!ignore_fsmonitor)
+ refresh_fsmonitor(istate);
/*
* CE_VALID or CE_SKIP_WORKTREE means the user promised us
* that the change to the work tree does not matter and told
ce_mark_uptodate(ce);
return ce;
}
+ if (!ignore_fsmonitor && (ce->ce_flags & CE_FSMONITOR_VALID)) {
+ ce_mark_uptodate(ce);
+ return ce;
+ }
if (has_symlink_leading_path(ce->name, ce_namelen(ce))) {
if (ignore_missing)
* because CE_UPTODATE flag is in-core only;
* we are not going to write this change out.
*/
- if (!S_ISGITLINK(ce->ce_mode))
+ if (!S_ISGITLINK(ce->ce_mode)) {
ce_mark_uptodate(ce);
+ mark_fsmonitor_valid(ce);
+ }
return ce;
}
}
*/
ce->ce_flags &= ~CE_VALID;
ce->ce_flags |= CE_UPDATE_IN_BASE;
+ mark_fsmonitor_invalid(istate, ce);
istate->cache_changed |= CE_ENTRY_CHANGED;
}
if (quiet)
/* Allow fsck to force verification of the index checksum. */
int verify_index_checksum;
+/* Allow fsck to force verification of the cache entry order. */
+int verify_ce_order;
+
static int verify_hdr(struct cache_header *hdr, unsigned long size)
{
git_SHA_CTX c;
case CACHE_EXT_UNTRACKED:
istate->untracked = read_untracked_extension(data, sz);
break;
+ case CACHE_EXT_FSMONITOR:
+ read_fsmonitor_extension(istate, data, sz);
+ break;
default:
if (*ext < 'A' || 'Z' < *ext)
return error("index uses %.4s extension, which we do not understand",
{
unsigned int i;
+ if (!verify_ce_order)
+ return;
+
for (i = 1; i < istate->cache_nr; i++) {
struct cache_entry *ce = istate->cache[i - 1];
struct cache_entry *next_ce = istate->cache[i];
check_ce_order(istate);
tweak_untracked_cache(istate);
tweak_split_index(istate);
+ tweak_fsmonitor(istate);
}
/* remember to discard_cache() before reading a different cache! */
return 0;
}
-/*
- * Opportunistically update the index but do not complain if we can't
- */
void update_index_if_able(struct index_state *istate, struct lock_file *lockfile)
{
if ((istate->cache_changed || has_racy_timestamp(istate)) &&
- verify_index(istate) &&
- write_locked_index(istate, lockfile, COMMIT_LOCK))
+ verify_index(istate))
+ write_locked_index(istate, lockfile, COMMIT_LOCK);
+ else
rollback_lock_file(lockfile);
}
+/*
+ * On success, `tempfile` is closed. If it is the temporary file
+ * of a `struct lock_file`, we will therefore effectively perform
+ * a 'close_lock_file_gently()`. Since that is an implementation
+ * detail of lockfiles, callers of `do_write_index()` should not
+ * rely on it.
+ */
static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
int strip_extensions)
{
if (err)
return -1;
}
+ if (!strip_extensions && istate->fsmonitor_last_update) {
+ struct strbuf sb = STRBUF_INIT;
+
+ write_fsmonitor_extension(&sb, istate);
+ err = write_index_ext_header(&c, newfd, CACHE_EXT_FSMONITOR, sb.len) < 0
+ || ce_write(&c, newfd, sb.buf, sb.len) < 0;
+ strbuf_release(&sb);
+ if (err)
+ return -1;
+ }
if (ce_flush(&c, newfd, istate->sha1))
return -1;
if (close_tempfile_gently(tempfile)) {
error(_("could not close '%s'"), tempfile->filename.buf);
- delete_tempfile(&tempfile);
return -1;
}
if (stat(tempfile->filename.buf, &st))
int ret = do_write_index(istate, lock->tempfile, 0);
if (ret)
return ret;
- assert((flags & (COMMIT_LOCK | CLOSE_LOCK)) !=
- (COMMIT_LOCK | CLOSE_LOCK));
if (flags & COMMIT_LOCK)
return commit_locked_index(lock);
- else if (flags & CLOSE_LOCK)
- return close_lock_file_gently(lock);
- else
- return ret;
+ return close_lock_file_gently(lock);
}
static int write_split_index(struct index_state *istate,
int new_shared_index, ret;
struct split_index *si = istate->split_index;
+ if (istate->fsmonitor_last_update)
+ fill_fsmonitor_bitmap(istate);
+
if (!si || alternate_index_output ||
(istate->cache_changed & ~EXTMASK)) {
if (si)
hashclr(si->base_sha1);
- return do_write_locked_index(istate, lock, flags);
+ ret = do_write_locked_index(istate, lock, flags);
+ goto out;
}
if (getenv("GIT_TEST_SPLIT_INDEX")) {
if (new_shared_index) {
ret = write_shared_index(istate, lock, flags);
if (ret)
- return ret;
+ goto out;
}
ret = write_split_index(istate, lock, flags);
if (!ret && !new_shared_index)
freshen_shared_index(sha1_to_hex(si->base_sha1), 1);
+out:
+ if (flags & COMMIT_LOCK)
+ rollback_lock_file(lock);
return ret;
}