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Diffstat (limited to 'builtin/update-index.c')
-rw-r--r--builtin/update-index.c259
1 files changed, 234 insertions, 25 deletions
diff --git a/builtin/update-index.c b/builtin/update-index.c
index 6271b54adc..6cdfd5f730 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -33,6 +33,16 @@ static int mark_valid_only;
static int mark_skip_worktree_only;
#define MARK_FLAG 1
#define UNMARK_FLAG 2
+static struct strbuf mtime_dir = STRBUF_INIT;
+
+/* Untracked cache mode */
+enum uc_mode {
+ UC_UNSPECIFIED = -1,
+ UC_DISABLE = 0,
+ UC_ENABLE,
+ UC_TEST,
+ UC_FORCE
+};
__attribute__((format (printf, 1, 2)))
static void report(const char *fmt, ...)
@@ -48,6 +58,166 @@ static void report(const char *fmt, ...)
va_end(vp);
}
+static void remove_test_directory(void)
+{
+ if (mtime_dir.len)
+ remove_dir_recursively(&mtime_dir, 0);
+}
+
+static const char *get_mtime_path(const char *path)
+{
+ static struct strbuf sb = STRBUF_INIT;
+ strbuf_reset(&sb);
+ strbuf_addf(&sb, "%s/%s", mtime_dir.buf, path);
+ return sb.buf;
+}
+
+static void xmkdir(const char *path)
+{
+ path = get_mtime_path(path);
+ if (mkdir(path, 0700))
+ die_errno(_("failed to create directory %s"), path);
+}
+
+static int xstat_mtime_dir(struct stat *st)
+{
+ if (stat(mtime_dir.buf, st))
+ die_errno(_("failed to stat %s"), mtime_dir.buf);
+ return 0;
+}
+
+static int create_file(const char *path)
+{
+ int fd;
+ path = get_mtime_path(path);
+ fd = open(path, O_CREAT | O_RDWR, 0644);
+ if (fd < 0)
+ die_errno(_("failed to create file %s"), path);
+ return fd;
+}
+
+static void xunlink(const char *path)
+{
+ path = get_mtime_path(path);
+ if (unlink(path))
+ die_errno(_("failed to delete file %s"), path);
+}
+
+static void xrmdir(const char *path)
+{
+ path = get_mtime_path(path);
+ if (rmdir(path))
+ die_errno(_("failed to delete directory %s"), path);
+}
+
+static void avoid_racy(void)
+{
+ /*
+ * not use if we could usleep(10) if USE_NSEC is defined. The
+ * field nsec could be there, but the OS could choose to
+ * ignore it?
+ */
+ sleep(1);
+}
+
+static int test_if_untracked_cache_is_supported(void)
+{
+ struct stat st;
+ struct stat_data base;
+ int fd, ret = 0;
+
+ strbuf_addstr(&mtime_dir, "mtime-test-XXXXXX");
+ if (!mkdtemp(mtime_dir.buf))
+ die_errno("Could not make temporary directory");
+
+ fprintf(stderr, _("Testing mtime in '%s' "), xgetcwd());
+ atexit(remove_test_directory);
+ xstat_mtime_dir(&st);
+ fill_stat_data(&base, &st);
+ fputc('.', stderr);
+
+ avoid_racy();
+ fd = create_file("newfile");
+ xstat_mtime_dir(&st);
+ if (!match_stat_data(&base, &st)) {
+ close(fd);
+ fputc('\n', stderr);
+ fprintf_ln(stderr,_("directory stat info does not "
+ "change after adding a new file"));
+ goto done;
+ }
+ fill_stat_data(&base, &st);
+ fputc('.', stderr);
+
+ avoid_racy();
+ xmkdir("new-dir");
+ xstat_mtime_dir(&st);
+ if (!match_stat_data(&base, &st)) {
+ close(fd);
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info does not change "
+ "after adding a new directory"));
+ goto done;
+ }
+ fill_stat_data(&base, &st);
+ fputc('.', stderr);
+
+ avoid_racy();
+ write_or_die(fd, "data", 4);
+ close(fd);
+ xstat_mtime_dir(&st);
+ if (match_stat_data(&base, &st)) {
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info changes "
+ "after updating a file"));
+ goto done;
+ }
+ fputc('.', stderr);
+
+ avoid_racy();
+ close(create_file("new-dir/new"));
+ xstat_mtime_dir(&st);
+ if (match_stat_data(&base, &st)) {
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info changes after "
+ "adding a file inside subdirectory"));
+ goto done;
+ }
+ fputc('.', stderr);
+
+ avoid_racy();
+ xunlink("newfile");
+ xstat_mtime_dir(&st);
+ if (!match_stat_data(&base, &st)) {
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info does not "
+ "change after deleting a file"));
+ goto done;
+ }
+ fill_stat_data(&base, &st);
+ fputc('.', stderr);
+
+ avoid_racy();
+ xunlink("new-dir/new");
+ xrmdir("new-dir");
+ xstat_mtime_dir(&st);
+ if (!match_stat_data(&base, &st)) {
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info does not "
+ "change after deleting a directory"));
+ goto done;
+ }
+
+ if (rmdir(mtime_dir.buf))
+ die_errno(_("failed to delete directory %s"), mtime_dir.buf);
+ fprintf_ln(stderr, _(" OK"));
+ ret = 1;
+
+done:
+ strbuf_release(&mtime_dir);
+ return ret;
+}
+
static int mark_ce_flags(const char *path, int flag, int mark)
{
int namelen = strlen(path);
@@ -85,7 +255,7 @@ static int process_lstat_error(const char *path, int err)
{
if (err == ENOENT || err == ENOTDIR)
return remove_one_path(path);
- return error("lstat(\"%s\"): %s", path, strerror(errno));
+ return error("lstat(\"%s\"): %s", path, strerror(err));
}
static int add_one_path(const struct cache_entry *old, const char *path, int len, struct stat *st)
@@ -307,12 +477,14 @@ static void update_one(const char *path)
report("add '%s'", path);
}
-static void read_index_info(int line_termination)
+static void read_index_info(int nul_term_line)
{
struct strbuf buf = STRBUF_INIT;
struct strbuf uq = STRBUF_INIT;
+ strbuf_getline_fn getline_fn;
- while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
+ getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
+ while (getline_fn(&buf, stdin) != EOF) {
char *ptr, *tab;
char *path_name;
unsigned char sha1[20];
@@ -361,7 +533,7 @@ static void read_index_info(int line_termination)
goto bad_line;
path_name = ptr;
- if (line_termination && path_name[0] == '"') {
+ if (!nul_term_line && path_name[0] == '"') {
strbuf_reset(&uq);
if (unquote_c_style(&uq, path_name, NULL)) {
die("git update-index: bad quoting of path name");
@@ -532,10 +704,9 @@ static int do_unresolve(int ac, const char **av,
for (i = 1; i < ac; i++) {
const char *arg = av[i];
- const char *p = prefix_path(prefix, prefix_length, arg);
+ char *p = prefix_path(prefix, prefix_length, arg);
err |= unresolve_one(p);
- if (p < arg || p > arg + strlen(arg))
- free((char *)p);
+ free(p);
}
return err;
}
@@ -588,7 +759,7 @@ static int do_reupdate(int ac, const char **av,
if (save_nr != active_nr)
goto redo;
}
- free_pathspec(&pathspec);
+ clear_pathspec(&pathspec);
return 0;
}
@@ -684,12 +855,12 @@ static int cacheinfo_callback(struct parse_opt_ctx_t *ctx,
static int stdin_cacheinfo_callback(struct parse_opt_ctx_t *ctx,
const struct option *opt, int unset)
{
- int *line_termination = opt->value;
+ int *nul_term_line = opt->value;
if (ctx->argc != 1)
return error("option '%s' must be the last argument", opt->long_name);
allow_add = allow_replace = allow_remove = 1;
- read_index_info(*line_termination);
+ read_index_info(*nul_term_line);
return 0;
}
@@ -741,7 +912,8 @@ static int reupdate_callback(struct parse_opt_ctx_t *ctx,
int cmd_update_index(int argc, const char **argv, const char *prefix)
{
- int newfd, entries, has_errors = 0, line_termination = '\n';
+ int newfd, entries, has_errors = 0, nul_term_line = 0;
+ enum uc_mode untracked_cache = UC_UNSPECIFIED;
int read_from_stdin = 0;
int prefix_length = prefix ? strlen(prefix) : 0;
int preferred_index_format = 0;
@@ -751,6 +923,7 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
int split_index = -1;
struct lock_file *lock_file;
struct parse_opt_ctx_t ctx;
+ strbuf_getline_fn getline_fn;
int parseopt_state = PARSE_OPT_UNKNOWN;
struct option options[] = {
OPT_BIT('q', NULL, &refresh_args.flags,
@@ -802,13 +975,13 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
N_("add to index only; do not add content to object database"), 1),
OPT_SET_INT(0, "force-remove", &force_remove,
N_("remove named paths even if present in worktree"), 1),
- OPT_SET_INT('z', NULL, &line_termination,
- N_("with --stdin: input lines are terminated by null bytes"), '\0'),
+ OPT_BOOL('z', NULL, &nul_term_line,
+ N_("with --stdin: input lines are terminated by null bytes")),
{OPTION_LOWLEVEL_CALLBACK, 0, "stdin", &read_from_stdin, NULL,
N_("read list of paths to be updated from standard input"),
PARSE_OPT_NONEG | PARSE_OPT_NOARG,
(parse_opt_cb *) stdin_callback},
- {OPTION_LOWLEVEL_CALLBACK, 0, "index-info", &line_termination, NULL,
+ {OPTION_LOWLEVEL_CALLBACK, 0, "index-info", &nul_term_line, NULL,
N_("add entries from standard input to the index"),
PARSE_OPT_NONEG | PARSE_OPT_NOARG,
(parse_opt_cb *) stdin_cacheinfo_callback},
@@ -833,6 +1006,12 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
N_("write index in this format")),
OPT_BOOL(0, "split-index", &split_index,
N_("enable or disable split index")),
+ OPT_BOOL(0, "untracked-cache", &untracked_cache,
+ N_("enable/disable untracked cache")),
+ OPT_SET_INT(0, "test-untracked-cache", &untracked_cache,
+ N_("test if the filesystem supports untracked cache"), UC_TEST),
+ OPT_SET_INT(0, "force-untracked-cache", &untracked_cache,
+ N_("enable untracked cache without testing the filesystem"), UC_FORCE),
OPT_END()
};
@@ -871,14 +1050,14 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
case PARSE_OPT_DONE:
{
const char *path = ctx.argv[0];
- const char *p;
+ char *p;
setup_work_tree();
p = prefix_path(prefix, prefix_length, path);
update_one(p);
if (set_executable_bit)
chmod_path(set_executable_bit, p);
- free((char *)p);
+ free(p);
ctx.argc--;
ctx.argv++;
break;
@@ -892,6 +1071,8 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
}
}
argc = parse_options_end(&ctx);
+
+ getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
if (preferred_index_format) {
if (preferred_index_format < INDEX_FORMAT_LB ||
INDEX_FORMAT_UB < preferred_index_format)
@@ -905,24 +1086,25 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
}
if (read_from_stdin) {
- struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;
+ struct strbuf buf = STRBUF_INIT;
+ struct strbuf unquoted = STRBUF_INIT;
setup_work_tree();
- while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
- const char *p;
- if (line_termination && buf.buf[0] == '"') {
- strbuf_reset(&nbuf);
- if (unquote_c_style(&nbuf, buf.buf, NULL))
+ while (getline_fn(&buf, stdin) != EOF) {
+ char *p;
+ if (!nul_term_line && buf.buf[0] == '"') {
+ strbuf_reset(&unquoted);
+ if (unquote_c_style(&unquoted, buf.buf, NULL))
die("line is badly quoted");
- strbuf_swap(&buf, &nbuf);
+ strbuf_swap(&buf, &unquoted);
}
p = prefix_path(prefix, prefix_length, buf.buf);
update_one(p);
if (set_executable_bit)
chmod_path(set_executable_bit, p);
- free((char *)p);
+ free(p);
}
- strbuf_release(&nbuf);
+ strbuf_release(&unquoted);
strbuf_release(&buf);
}
@@ -940,6 +1122,33 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
the_index.cache_changed |= SOMETHING_CHANGED;
}
+ switch (untracked_cache) {
+ case UC_UNSPECIFIED:
+ break;
+ case UC_DISABLE:
+ if (git_config_get_untracked_cache() == 1)
+ warning("core.untrackedCache is set to true; "
+ "remove or change it, if you really want to "
+ "disable the untracked cache");
+ remove_untracked_cache(&the_index);
+ report(_("Untracked cache disabled"));
+ break;
+ case UC_TEST:
+ setup_work_tree();
+ return !test_if_untracked_cache_is_supported();
+ case UC_ENABLE:
+ case UC_FORCE:
+ if (git_config_get_untracked_cache() == 0)
+ warning("core.untrackedCache is set to false; "
+ "remove or change it, if you really want to "
+ "enable the untracked cache");
+ add_untracked_cache(&the_index);
+ report(_("Untracked cache enabled for '%s'"), get_git_work_tree());
+ break;
+ default:
+ die("Bug: bad untracked_cache value: %d", untracked_cache);
+ }
+
if (active_cache_changed) {
if (newfd < 0) {
if (refresh_args.flags & REFRESH_QUIET)