*/
#define NO_THE_INDEX_COMPATIBILITY_MACROS
#include "cache.h"
+#include "tempfile.h"
#include "lockfile.h"
#include "cache-tree.h"
#include "refs.h"
#include "strbuf.h"
#include "varint.h"
#include "split-index.h"
-#include "sigchain.h"
#include "utf8.h"
-static struct cache_entry *refresh_cache_entry(struct cache_entry *ce,
- unsigned int options);
-
/* Mask for the name length in ce_flags in the on-disk index */
#define CE_NAMEMASK (0x0fff)
#define CACHE_EXT_TREE 0x54524545 /* "TREE" */
#define CACHE_EXT_RESOLVE_UNDO 0x52455543 /* "REUC" */
#define CACHE_EXT_LINK 0x6c696e6b /* "link" */
+#define CACHE_EXT_UNTRACKED 0x554E5452 /* "UNTR" */
/* 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)
+ SPLIT_INDEX_ORDERED | UNTRACKED_CHANGED)
struct index_state the_index;
static const char *alternate_index_output;
memcpy(new->name, new_name, namelen + 1);
cache_tree_invalidate_path(istate, old->name);
+ untracked_cache_remove_from_index(istate, old->name);
remove_index_entry_at(istate, nr);
add_index_entry(istate, new, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
}
static int ce_compare_data(const struct cache_entry *ce, struct stat *st)
{
int match = -1;
- int fd = open(ce->name, O_RDONLY);
+ static int cloexec = O_CLOEXEC;
+ int fd = open(ce->name, O_RDONLY | cloexec);
+
+ if ((cloexec & O_CLOEXEC) && fd < 0 && errno == EINVAL) {
+ /* Try again w/o O_CLOEXEC: the kernel might not support it */
+ cloexec &= ~O_CLOEXEC;
+ fd = open(ce->name, O_RDONLY | cloexec);
+ }
if (fd >= 0) {
unsigned char sha1[20];
if (!index_fd(sha1, fd, st, OBJ_BLOB, ce->name, 0))
- match = hashcmp(sha1, ce->sha1);
+ match = hashcmp(sha1, ce->oid.hash);
/* index_fd() closed the file descriptor already */
}
return match;
if (strbuf_readlink(&sb, ce->name, expected_size))
return -1;
- buffer = read_sha1_file(ce->sha1, &type, &size);
+ buffer = read_sha1_file(ce->oid.hash, &type, &size);
if (buffer) {
if (size == sb.len)
match = memcmp(buffer, sb.buf, size);
*/
if (resolve_gitlink_ref(ce->name, "HEAD", sha1) < 0)
return 0;
- return hashcmp(sha1, ce->sha1);
+ return hashcmp(sha1, ce->oid.hash);
}
static int ce_modified_check_fs(const struct cache_entry *ce, struct stat *st)
/* Racily smudged entry? */
if (!ce->ce_stat_data.sd_size) {
- if (!is_empty_blob_sha1(ce->sha1))
+ if (!is_empty_blob_sha1(ce->oid.hash))
changed |= DATA_CHANGED;
}
return changed;
}
-static int is_racy_timestamp(const struct index_state *istate,
- const struct cache_entry *ce)
+static int is_racy_stat(const struct index_state *istate,
+ const struct stat_data *sd)
{
- return (!S_ISGITLINK(ce->ce_mode) &&
- istate->timestamp.sec &&
+ return (istate->timestamp.sec &&
#ifdef USE_NSEC
/* nanosecond timestamped files can also be racy! */
- (istate->timestamp.sec < ce->ce_stat_data.sd_mtime.sec ||
- (istate->timestamp.sec == ce->ce_stat_data.sd_mtime.sec &&
- istate->timestamp.nsec <= ce->ce_stat_data.sd_mtime.nsec))
+ (istate->timestamp.sec < sd->sd_mtime.sec ||
+ (istate->timestamp.sec == sd->sd_mtime.sec &&
+ istate->timestamp.nsec <= sd->sd_mtime.nsec))
#else
- istate->timestamp.sec <= ce->ce_stat_data.sd_mtime.sec
+ istate->timestamp.sec <= sd->sd_mtime.sec
#endif
- );
+ );
+}
+
+static int is_racy_timestamp(const struct index_state *istate,
+ const struct cache_entry *ce)
+{
+ return (!S_ISGITLINK(ce->ce_mode) &&
+ is_racy_stat(istate, &ce->ce_stat_data));
+}
+
+int match_stat_data_racy(const struct index_state *istate,
+ const struct stat_data *sd, struct stat *st)
+{
+ if (is_racy_stat(istate, sd))
+ return MTIME_CHANGED;
+ return match_stat_data(sd, st);
}
int ie_match_stat(const struct index_state *istate,
* by definition never matches what is in the work tree until it
* actually gets added.
*/
- if (ce->ce_flags & CE_INTENT_TO_ADD)
+ if (ce_intent_to_add(ce))
return DATA_CHANGED | TYPE_CHANGED | MODE_CHANGED;
changed = ce_match_stat_basic(ce, st);
if (pos < 0)
pos = -pos-1;
cache_tree_invalidate_path(istate, path);
+ untracked_cache_remove_from_index(istate, path);
while (pos < istate->cache_nr && !strcmp(istate->cache[pos]->name, path))
remove_index_entry_at(istate, pos);
return 0;
unsigned char sha1[20];
if (write_sha1_file("", 0, blob_type, sha1))
die("cannot create an empty blob in the object database");
- hashcpy(ce->sha1, sha1);
+ hashcpy(ce->oid.hash, sha1);
}
int add_to_index(struct index_state *istate, const char *path, struct stat *st, int flags)
else
ce->ce_flags |= CE_INTENT_TO_ADD;
- if (trust_executable_bit && has_symlinks)
+
+ if (trust_executable_bit && has_symlinks) {
ce->ce_mode = create_ce_mode(st_mode);
- else {
+ } else {
/* If there is an existing entry, pick the mode bits and type
* from it, otherwise assume unexecutable regular file.
*/
* entry's directory case.
*/
if (ignore_case) {
- const char *startPtr = ce->name;
- const char *ptr = startPtr;
- while (*ptr) {
- while (*ptr && *ptr != '/')
- ++ptr;
- if (*ptr == '/') {
- struct cache_entry *foundce;
- ++ptr;
- foundce = index_dir_exists(istate, ce->name, ptr - ce->name - 1);
- if (foundce) {
- memcpy((void *)startPtr, foundce->name + (startPtr - ce->name), ptr - startPtr);
- startPtr = ptr;
- }
- }
- }
+ adjust_dirname_case(istate, ce->name);
}
alias = index_file_exists(istate, ce->name, ce_namelen(ce), ignore_case);
return 0;
}
if (!intent_only) {
- if (index_path(ce->sha1, path, st, HASH_WRITE_OBJECT)) {
+ if (index_path(ce->oid.hash, path, st, HASH_WRITE_OBJECT)) {
free(ce);
return error("unable to index file %s", path);
}
/* It was suspected to be racily clean, but it turns out to be Ok */
was_same = (alias &&
!ce_stage(alias) &&
- !hashcmp(alias->sha1, ce->sha1) &&
+ !oidcmp(&alias->oid, &ce->oid) &&
ce->ce_mode == alias->ce_mode);
if (pretend)
size = cache_entry_size(len);
ce = xcalloc(1, size);
- hashcpy(ce->sha1, sha1);
+ hashcpy(ce->oid.hash, sha1);
memcpy(ce->name, path, len);
ce->ce_flags = create_ce_flags(stage);
ce->ce_namelen = len;
return ret;
}
+/*
+ * Chmod an index entry with either +x or -x.
+ *
+ * Returns -1 if the chmod for the particular cache entry failed (if it's
+ * not a regular file), -2 if an invalid flip argument is passed in, 0
+ * otherwise.
+ */
+int chmod_index_entry(struct index_state *istate, struct cache_entry *ce,
+ char flip)
+{
+ if (!S_ISREG(ce->ce_mode))
+ return -1;
+ switch (flip) {
+ case '+':
+ ce->ce_mode |= 0111;
+ break;
+ case '-':
+ ce->ce_mode &= ~0111;
+ break;
+ default:
+ return -2;
+ }
+ cache_tree_invalidate_path(istate, ce->name);
+ ce->ce_flags |= CE_UPDATE_IN_BASE;
+ istate->cache_changed |= CE_ENTRY_CHANGED;
+
+ return 0;
+}
+
int ce_same_name(const struct cache_entry *a, const struct cache_entry *b)
{
int len = ce_namelen(a);
}
pos = -pos-1;
+ if (!(option & ADD_CACHE_KEEP_CACHE_TREE))
+ untracked_cache_add_to_index(istate, ce->name);
+
/*
* Inserting a merged entry ("stage 0") into the index
* will always replace all non-merged entries..
if (cache_errno == ENOENT)
fmt = deleted_fmt;
- else if (ce->ce_flags & CE_INTENT_TO_ADD)
+ else if (ce_intent_to_add(ce))
fmt = added_fmt; /* must be before other checks */
else if (changed & TYPE_CHANGED)
fmt = typechange_fmt;
return has_errors;
}
-static struct cache_entry *refresh_cache_entry(struct cache_entry *ce,
+struct cache_entry *refresh_cache_entry(struct cache_entry *ce,
unsigned int options)
{
return refresh_cache_ent(&the_index, ce, options, NULL, NULL);
if (read_link_extension(istate, data, sz))
return -1;
break;
+ case CACHE_EXT_UNTRACKED:
+ istate->untracked = read_untracked_extension(data, sz);
+ break;
default:
if (*ext < 'A' || 'Z' < *ext)
return error("index uses %.4s extension, which we do not understand",
ce->ce_flags = flags & ~CE_NAMEMASK;
ce->ce_namelen = len;
ce->index = 0;
- hashcpy(ce->sha1, ondisk->sha1);
+ hashcpy(ce->oid.hash, ondisk->sha1);
memcpy(ce->name, name, len);
ce->name[len] = '\0';
return ce;
}
}
+static void tweak_untracked_cache(struct index_state *istate)
+{
+ switch (git_config_get_untracked_cache()) {
+ case -1: /* keep: do nothing */
+ break;
+ case 0: /* false */
+ remove_untracked_cache(istate);
+ break;
+ case 1: /* true */
+ add_untracked_cache(istate);
+ break;
+ default: /* unknown value: do nothing */
+ break;
+ }
+}
+
+static void post_read_index_from(struct index_state *istate)
+{
+ check_ce_order(istate);
+ tweak_untracked_cache(istate);
+}
+
/* remember to discard_cache() before reading a different cache! */
int do_read_index(struct index_state *istate, const char *path, int must_exist)
{
return istate->cache_nr;
ret = do_read_index(istate, path, 0);
+
split_index = istate->split_index;
if (!split_index || is_null_sha1(split_index->base_sha1)) {
- check_ce_order(istate);
+ post_read_index_from(istate);
return ret;
}
die("broken index, expect %s in %s, got %s",
sha1_to_hex(split_index->base_sha1),
git_path("sharedindex.%s",
- sha1_to_hex(split_index->base_sha1)),
+ sha1_to_hex(split_index->base_sha1)),
sha1_to_hex(split_index->base->sha1));
merge_base_index(istate);
- check_ce_order(istate);
+ post_read_index_from(istate);
return ret;
}
istate->cache = NULL;
istate->cache_alloc = 0;
discard_split_index(istate);
+ free_untracked_cache(istate->untracked);
+ istate->untracked = NULL;
return 0;
}
ondisk->uid = htonl(ce->ce_stat_data.sd_uid);
ondisk->gid = htonl(ce->ce_stat_data.sd_gid);
ondisk->size = htonl(ce->ce_stat_data.sd_size);
- hashcpy(ondisk->sha1, ce->sha1);
+ hashcpy(ondisk->sha1, ce->oid.hash);
flags = ce->ce_flags & ~CE_NAMEMASK;
flags |= (ce_namelen(ce) >= CE_NAMEMASK ? CE_NAMEMASK : ce_namelen(ce));
continue;
if (!ce_uptodate(ce) && is_racy_timestamp(istate, ce))
ce_smudge_racily_clean_entry(ce);
- if (is_null_sha1(ce->sha1)) {
+ if (is_null_oid(&ce->oid)) {
static const char msg[] = "cache entry has null sha1: %s";
static int allow = -1;
if (err)
return -1;
}
+ if (!strip_extensions && istate->untracked) {
+ struct strbuf sb = STRBUF_INIT;
+
+ write_untracked_extension(&sb, istate->untracked);
+ err = write_index_ext_header(&c, newfd, CACHE_EXT_UNTRACKED,
+ 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) || fstat(newfd, &st))
return -1;
static int do_write_locked_index(struct index_state *istate, struct lock_file *lock,
unsigned flags)
{
- int ret = do_write_index(istate, lock->fd, 0);
+ int ret = do_write_index(istate, get_lock_file_fd(lock), 0);
if (ret)
return ret;
assert((flags & (COMMIT_LOCK | CLOSE_LOCK)) !=
return ret;
}
-static char *temporary_sharedindex;
-
-static void remove_temporary_sharedindex(void)
-{
- if (temporary_sharedindex) {
- unlink_or_warn(temporary_sharedindex);
- free(temporary_sharedindex);
- temporary_sharedindex = NULL;
- }
-}
-
-static void remove_temporary_sharedindex_on_signal(int signo)
-{
- remove_temporary_sharedindex();
- sigchain_pop(signo);
- raise(signo);
-}
+static struct tempfile temporary_sharedindex;
static int write_shared_index(struct index_state *istate,
struct lock_file *lock, unsigned flags)
{
struct split_index *si = istate->split_index;
- static int installed_handler;
int fd, ret;
- temporary_sharedindex = git_pathdup("sharedindex_XXXXXX");
- fd = mkstemp(temporary_sharedindex);
+ fd = mks_tempfile(&temporary_sharedindex, git_path("sharedindex_XXXXXX"));
if (fd < 0) {
- free(temporary_sharedindex);
- temporary_sharedindex = NULL;
hashclr(si->base_sha1);
return do_write_locked_index(istate, lock, flags);
}
- if (!installed_handler) {
- atexit(remove_temporary_sharedindex);
- sigchain_push_common(remove_temporary_sharedindex_on_signal);
- }
move_cache_to_base_index(istate);
ret = do_write_index(si->base, fd, 1);
- close(fd);
if (ret) {
- remove_temporary_sharedindex();
+ delete_tempfile(&temporary_sharedindex);
return ret;
}
- ret = rename(temporary_sharedindex,
- git_path("sharedindex.%s", sha1_to_hex(si->base->sha1)));
- free(temporary_sharedindex);
- temporary_sharedindex = NULL;
+ ret = rename_tempfile(&temporary_sharedindex,
+ git_path("sharedindex.%s", sha1_to_hex(si->base->sha1)));
if (!ret)
hashcpy(si->base_sha1, si->base->sha1);
return ret;
}
if (pos < 0)
return NULL;
- data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
+ data = read_sha1_file(istate->cache[pos]->oid.hash, &type, &sz);
if (!data || type != OBJ_BLOB) {
free(data);
return NULL;