mirror of
https://github.com/git-for-windows/git.git
synced 2026-02-03 18:59:59 -06:00
Merge branch 'long-paths'
This commit is contained in:
Johannes Schindelin
commit
9dfe22e227
@ -64,6 +64,9 @@ all advice messages.
|
||||
set their identity configuration.
|
||||
mergeConflict::
|
||||
Shown when various commands stop because of conflicts.
|
||||
nameTooLong::
|
||||
Advice shown if a filepath operation is attempted where the
|
||||
path was too long.
|
||||
nestedTag::
|
||||
Shown when a user attempts to recursively tag a tag object.
|
||||
pushAlreadyExists::
|
||||
|
||||
@ -710,6 +710,19 @@ relatively high IO latencies. When enabled, Git will do the
|
||||
index comparison to the filesystem data in parallel, allowing
|
||||
overlapping IO's. Defaults to true.
|
||||
|
||||
core.fscache::
|
||||
Enable additional caching of file system data for some operations.
|
||||
+
|
||||
Git for Windows uses this to bulk-read and cache lstat data of entire
|
||||
directories (instead of doing lstat file by file).
|
||||
|
||||
core.longpaths::
|
||||
Enable long path (> 260) support for builtin commands in Git for
|
||||
Windows. This is disabled by default, as long paths are not supported
|
||||
by Windows Explorer, cmd.exe and the Git for Windows tool chain
|
||||
(msys, bash, tcl, perl...). Only enable this if you know what you're
|
||||
doing and are prepared to live with a few quirks.
|
||||
|
||||
core.unsetenvvars::
|
||||
Windows-only: comma-separated list of environment variables'
|
||||
names that need to be unset before spawning any other process.
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||||
|
||||
1
advice.c
1
advice.c
@ -61,6 +61,7 @@ static struct {
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||||
[ADVICE_IGNORED_HOOK] = { "ignoredHook" },
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||||
[ADVICE_IMPLICIT_IDENTITY] = { "implicitIdentity" },
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||||
[ADVICE_MERGE_CONFLICT] = { "mergeConflict" },
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||||
[ADVICE_NAME_TOO_LONG] = { "nameTooLong" },
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||||
[ADVICE_NESTED_TAG] = { "nestedTag" },
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||||
[ADVICE_OBJECT_NAME_WARNING] = { "objectNameWarning" },
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||||
[ADVICE_PUSH_ALREADY_EXISTS] = { "pushAlreadyExists" },
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||||
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||||
1
advice.h
1
advice.h
@ -28,6 +28,7 @@ enum advice_type {
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||||
ADVICE_IGNORED_HOOK,
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ADVICE_IMPLICIT_IDENTITY,
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||||
ADVICE_MERGE_CONFLICT,
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||||
ADVICE_NAME_TOO_LONG,
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||||
ADVICE_NESTED_TAG,
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ADVICE_OBJECT_NAME_WARNING,
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||||
ADVICE_PUSH_ALREADY_EXISTS,
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||||
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||||
@ -493,6 +493,10 @@ int cmd_add(int argc,
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||||
die_in_unpopulated_submodule(repo->index, prefix);
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||||
die_path_inside_submodule(repo->index, &pathspec);
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||||
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||||
enable_fscache(0);
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||||
/* We do not really re-read the index but update the up-to-date flags */
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||||
preload_index(repo->index, &pathspec, 0);
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||||
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||||
if (add_new_files) {
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||||
int baselen;
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||||
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||||
@ -605,5 +609,6 @@ finish:
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||||
free(ps_matched);
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dir_clear(&dir);
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clear_pathspec(&pathspec);
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||||
enable_fscache(0);
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return exit_status;
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||||
}
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||||
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||||
@ -415,6 +415,7 @@ static int checkout_worktree(const struct checkout_opts *opts,
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if (pc_workers > 1)
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||||
init_parallel_checkout();
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||||
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||||
enable_fscache(the_repository->index->cache_nr);
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||||
for (pos = 0; pos < the_repository->index->cache_nr; pos++) {
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||||
struct cache_entry *ce = the_repository->index->cache[pos];
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||||
if (ce->ce_flags & CE_MATCHED) {
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||||
@ -440,6 +441,7 @@ static int checkout_worktree(const struct checkout_opts *opts,
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||||
errs |= run_parallel_checkout(&state, pc_workers, pc_threshold,
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||||
NULL, NULL);
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||||
mem_pool_discard(&ce_mem_pool, should_validate_cache_entries());
|
||||
disable_fscache();
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||||
remove_marked_cache_entries(the_repository->index, 1);
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||||
remove_scheduled_dirs();
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||||
errs |= finish_delayed_checkout(&state, opts->show_progress);
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||||
|
||||
@ -26,6 +26,7 @@
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||||
#include "pathspec.h"
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||||
#include "help.h"
|
||||
#include "prompt.h"
|
||||
#include "advice.h"
|
||||
|
||||
static int require_force = -1; /* unset */
|
||||
static int interactive;
|
||||
@ -221,6 +222,9 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
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||||
quote_path(path->buf, prefix, "ed, 0);
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||||
errno = saved_errno;
|
||||
warning_errno(_(msg_warn_remove_failed), quoted.buf);
|
||||
if (saved_errno == ENAMETOOLONG) {
|
||||
advise_if_enabled(ADVICE_NAME_TOO_LONG, _("Setting `core.longPaths` may allow the deletion to succeed."));
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||||
}
|
||||
*dir_gone = 0;
|
||||
}
|
||||
ret = res;
|
||||
@ -256,6 +260,9 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
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||||
quote_path(path->buf, prefix, "ed, 0);
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||||
errno = saved_errno;
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||||
warning_errno(_(msg_warn_remove_failed), quoted.buf);
|
||||
if (saved_errno == ENAMETOOLONG) {
|
||||
advise_if_enabled(ADVICE_NAME_TOO_LONG, _("Setting `core.longPaths` may allow the deletion to succeed."));
|
||||
}
|
||||
*dir_gone = 0;
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||||
ret = 1;
|
||||
}
|
||||
@ -299,6 +306,9 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
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||||
quote_path(path->buf, prefix, "ed, 0);
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||||
errno = saved_errno;
|
||||
warning_errno(_(msg_warn_remove_failed), quoted.buf);
|
||||
if (saved_errno == ENAMETOOLONG) {
|
||||
advise_if_enabled(ADVICE_NAME_TOO_LONG, _("Setting `core.longPaths` may allow the deletion to succeed."));
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||||
}
|
||||
*dir_gone = 0;
|
||||
ret = 1;
|
||||
}
|
||||
@ -1042,6 +1052,7 @@ int cmd_clean(int argc,
|
||||
|
||||
if (repo_read_index(the_repository) < 0)
|
||||
die(_("index file corrupt"));
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||||
enable_fscache(the_repository->index->cache_nr);
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||||
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||||
pl = add_pattern_list(&dir, EXC_CMDL, "--exclude option");
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||||
for (i = 0; i < exclude_list.nr; i++)
|
||||
@ -1108,6 +1119,9 @@ int cmd_clean(int argc,
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||||
qname = quote_path(item->string, NULL, &buf, 0);
|
||||
errno = saved_errno;
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||||
warning_errno(_(msg_warn_remove_failed), qname);
|
||||
if (saved_errno == ENAMETOOLONG) {
|
||||
advise_if_enabled(ADVICE_NAME_TOO_LONG, _("Setting `core.longPaths` may allow the deletion to succeed."));
|
||||
}
|
||||
errors++;
|
||||
} else if (!quiet) {
|
||||
qname = quote_path(item->string, NULL, &buf, 0);
|
||||
@ -1116,6 +1130,7 @@ int cmd_clean(int argc,
|
||||
}
|
||||
}
|
||||
|
||||
disable_fscache();
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||||
strbuf_release(&abs_path);
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||||
strbuf_release(&buf);
|
||||
string_list_clear(&del_list, 0);
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||||
|
||||
@ -1623,6 +1623,7 @@ struct repository *repo UNUSED)
|
||||
PATHSPEC_PREFER_FULL,
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||||
prefix, argv);
|
||||
|
||||
enable_fscache(0);
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||||
if (status_format != STATUS_FORMAT_PORCELAIN &&
|
||||
status_format != STATUS_FORMAT_PORCELAIN_V2)
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||||
progress_flag = REFRESH_PROGRESS;
|
||||
@ -1663,6 +1664,7 @@ struct repository *repo UNUSED)
|
||||
wt_status_print(&s);
|
||||
wt_status_collect_free_buffers(&s);
|
||||
|
||||
disable_fscache();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -34,7 +34,7 @@ struct fsm_health_data
|
||||
|
||||
struct wt_moved
|
||||
{
|
||||
wchar_t wpath[MAX_PATH + 1];
|
||||
wchar_t wpath[MAX_LONG_PATH + 1];
|
||||
BY_HANDLE_FILE_INFORMATION bhfi;
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||||
} wt_moved;
|
||||
};
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||||
@ -143,8 +143,8 @@ static int has_worktree_moved(struct fsmonitor_daemon_state *state,
|
||||
return 0;
|
||||
|
||||
case CTX_INIT:
|
||||
if (xutftowcs_path(data->wt_moved.wpath,
|
||||
state->path_worktree_watch.buf) < 0) {
|
||||
if (xutftowcs_long_path(data->wt_moved.wpath,
|
||||
state->path_worktree_watch.buf) < 0) {
|
||||
error(_("could not convert to wide characters: '%s'"),
|
||||
state->path_worktree_watch.buf);
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||||
return -1;
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||||
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||||
@ -28,7 +28,7 @@ struct one_watch
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||||
DWORD count;
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||||
|
||||
struct strbuf path;
|
||||
wchar_t wpath_longname[MAX_PATH + 1];
|
||||
wchar_t wpath_longname[MAX_LONG_PATH + 1];
|
||||
DWORD wpath_longname_len;
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||||
|
||||
HANDLE hDir;
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||||
@ -131,8 +131,8 @@ normalize:
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||||
*/
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||||
static void check_for_shortnames(struct one_watch *watch)
|
||||
{
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||||
wchar_t buf_in[MAX_PATH + 1];
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||||
wchar_t buf_out[MAX_PATH + 1];
|
||||
wchar_t buf_in[MAX_LONG_PATH + 1];
|
||||
wchar_t buf_out[MAX_LONG_PATH + 1];
|
||||
wchar_t *last;
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||||
wchar_t *p;
|
||||
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||||
@ -197,8 +197,8 @@ static enum get_relative_result get_relative_longname(
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||||
const wchar_t *wpath, DWORD wpath_len,
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||||
wchar_t *wpath_longname, size_t bufsize_wpath_longname)
|
||||
{
|
||||
wchar_t buf_in[2 * MAX_PATH + 1];
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||||
wchar_t buf_out[MAX_PATH + 1];
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||||
wchar_t buf_in[2 * MAX_LONG_PATH + 1];
|
||||
wchar_t buf_out[MAX_LONG_PATH + 1];
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||||
DWORD root_len;
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||||
DWORD out_len;
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||||
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||||
@ -298,10 +298,10 @@ static struct one_watch *create_watch(const char *path)
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FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE;
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||||
HANDLE hDir;
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||||
DWORD len_longname;
|
||||
wchar_t wpath[MAX_PATH + 1];
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||||
wchar_t wpath_longname[MAX_PATH + 1];
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||||
wchar_t wpath[MAX_LONG_PATH + 1];
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wchar_t wpath_longname[MAX_LONG_PATH + 1];
|
||||
|
||||
if (xutftowcs_path(wpath, path) < 0) {
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||||
if (xutftowcs_long_path(wpath, path) < 0) {
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error(_("could not convert to wide characters: '%s'"), path);
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||||
return NULL;
|
||||
}
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||||
@ -545,7 +545,7 @@ static int process_worktree_events(struct fsmonitor_daemon_state *state)
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||||
struct string_list cookie_list = STRING_LIST_INIT_DUP;
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||||
struct fsmonitor_batch *batch = NULL;
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||||
const char *p = watch->buffer;
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||||
wchar_t wpath_longname[MAX_PATH + 1];
|
||||
wchar_t wpath_longname[MAX_LONG_PATH + 1];
|
||||
|
||||
/*
|
||||
* If the kernel gets more events than will fit in the kernel
|
||||
|
||||
@ -69,8 +69,8 @@ static int check_remote_protocol(wchar_t *wpath)
|
||||
*/
|
||||
int fsmonitor__get_fs_info(const char *path, struct fs_info *fs_info)
|
||||
{
|
||||
wchar_t wpath[MAX_PATH];
|
||||
wchar_t wfullpath[MAX_PATH];
|
||||
wchar_t wpath[MAX_LONG_PATH];
|
||||
wchar_t wfullpath[MAX_LONG_PATH];
|
||||
size_t wlen;
|
||||
UINT driveType;
|
||||
|
||||
@ -78,7 +78,7 @@ int fsmonitor__get_fs_info(const char *path, struct fs_info *fs_info)
|
||||
* Do everything in wide chars because the drive letter might be
|
||||
* a multi-byte sequence. See win32_has_dos_drive_prefix().
|
||||
*/
|
||||
if (xutftowcs_path(wpath, path) < 0) {
|
||||
if (xutftowcs_long_path(wpath, path) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
@ -97,7 +97,7 @@ int fsmonitor__get_fs_info(const char *path, struct fs_info *fs_info)
|
||||
* slashes to backslashes. This is essential to get GetDriveTypeW()
|
||||
* correctly handle some UNC "\\server\share\..." paths.
|
||||
*/
|
||||
if (!GetFullPathNameW(wpath, MAX_PATH, wfullpath, NULL)) {
|
||||
if (!GetFullPathNameW(wpath, MAX_LONG_PATH, wfullpath, NULL)) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
@ -338,6 +338,17 @@ static inline int getrlimit(int resource, struct rlimit *rlp)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
|
||||
* Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
|
||||
*/
|
||||
static inline long long filetime_to_hnsec(const FILETIME *ft)
|
||||
{
|
||||
long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
|
||||
/* Windows to Unix Epoch conversion */
|
||||
return winTime - 116444736000000000LL;
|
||||
}
|
||||
|
||||
/*
|
||||
* Use mingw specific stat()/lstat()/fstat() implementations on Windows,
|
||||
* including our own struct stat with 64 bit st_size and nanosecond-precision
|
||||
@ -354,6 +365,13 @@ struct timespec {
|
||||
#endif
|
||||
#endif
|
||||
|
||||
static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts)
|
||||
{
|
||||
long long hnsec = filetime_to_hnsec(ft);
|
||||
ts->tv_sec = (time_t)(hnsec / 10000000);
|
||||
ts->tv_nsec = (hnsec % 10000000) * 100;
|
||||
}
|
||||
|
||||
struct mingw_stat {
|
||||
_dev_t st_dev;
|
||||
_ino_t st_ino;
|
||||
@ -386,7 +404,7 @@ int mingw_fstat(int fd, struct stat *buf);
|
||||
#ifdef lstat
|
||||
#undef lstat
|
||||
#endif
|
||||
#define lstat mingw_lstat
|
||||
extern int (*lstat)(const char *file_name, struct stat *buf);
|
||||
|
||||
|
||||
int mingw_utime(const char *file_name, const struct utimbuf *times);
|
||||
|
||||
231
compat/mingw.c
231
compat/mingw.c
@ -14,6 +14,7 @@
|
||||
#include "symlinks.h"
|
||||
#include "trace2.h"
|
||||
#include "win32.h"
|
||||
#include "win32/fscache.h"
|
||||
#include "win32/lazyload.h"
|
||||
#include "wrapper.h"
|
||||
#include "write-or-die.h"
|
||||
@ -274,6 +275,28 @@ enum hide_dotfiles_type {
|
||||
|
||||
static enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
|
||||
static char *unset_environment_variables;
|
||||
int core_fscache;
|
||||
|
||||
int are_long_paths_enabled(void)
|
||||
{
|
||||
/* default to `false` during initialization */
|
||||
static const int fallback = 0;
|
||||
|
||||
static int enabled = -1;
|
||||
|
||||
if (enabled < 0) {
|
||||
/* avoid infinite recursion */
|
||||
if (!the_repository)
|
||||
return fallback;
|
||||
|
||||
if (the_repository->config &&
|
||||
the_repository->config->hash_initialized &&
|
||||
repo_config_get_bool(the_repository, "core.longpaths", &enabled) < 0)
|
||||
enabled = 0;
|
||||
}
|
||||
|
||||
return enabled < 0 ? fallback : enabled;
|
||||
}
|
||||
|
||||
int mingw_core_config(const char *var, const char *value,
|
||||
const struct config_context *ctx UNUSED,
|
||||
@ -287,6 +310,11 @@ int mingw_core_config(const char *var, const char *value,
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!strcmp(var, "core.fscache")) {
|
||||
core_fscache = git_config_bool(var, value);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!strcmp(var, "core.unsetenvvars")) {
|
||||
if (!value)
|
||||
return config_error_nonbool(var);
|
||||
@ -350,7 +378,7 @@ process_phantom_symlink(const wchar_t *wtarget, const wchar_t *wlink)
|
||||
{
|
||||
HANDLE hnd;
|
||||
BY_HANDLE_FILE_INFORMATION fdata;
|
||||
wchar_t relative[MAX_PATH];
|
||||
wchar_t relative[MAX_LONG_PATH];
|
||||
const wchar_t *rel;
|
||||
|
||||
/* check that wlink is still a file symlink */
|
||||
@ -454,8 +482,8 @@ static wchar_t *normalize_ntpath(wchar_t *wbuf)
|
||||
int mingw_unlink(const char *pathname, int handle_in_use_error)
|
||||
{
|
||||
int tries = 0;
|
||||
wchar_t wpathname[MAX_PATH];
|
||||
if (xutftowcs_path(wpathname, pathname) < 0)
|
||||
wchar_t wpathname[MAX_LONG_PATH];
|
||||
if (xutftowcs_long_path(wpathname, pathname) < 0)
|
||||
return -1;
|
||||
|
||||
if (DeleteFileW(wpathname))
|
||||
@ -487,7 +515,7 @@ static int is_dir_empty(const wchar_t *wpath)
|
||||
{
|
||||
WIN32_FIND_DATAW findbuf;
|
||||
HANDLE handle;
|
||||
wchar_t wbuf[MAX_PATH + 2];
|
||||
wchar_t wbuf[MAX_LONG_PATH + 2];
|
||||
wcscpy(wbuf, wpath);
|
||||
wcscat(wbuf, L"\\*");
|
||||
handle = FindFirstFileW(wbuf, &findbuf);
|
||||
@ -508,7 +536,7 @@ static int is_dir_empty(const wchar_t *wpath)
|
||||
int mingw_rmdir(const char *pathname)
|
||||
{
|
||||
int tries = 0;
|
||||
wchar_t wpathname[MAX_PATH];
|
||||
wchar_t wpathname[MAX_LONG_PATH];
|
||||
struct stat st;
|
||||
|
||||
/*
|
||||
@ -530,7 +558,7 @@ int mingw_rmdir(const char *pathname)
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (xutftowcs_path(wpathname, pathname) < 0)
|
||||
if (xutftowcs_long_path(wpathname, pathname) < 0)
|
||||
return -1;
|
||||
|
||||
do {
|
||||
@ -599,15 +627,18 @@ static int set_hidden_flag(const wchar_t *path, int set)
|
||||
int mingw_mkdir(const char *path, int mode UNUSED)
|
||||
{
|
||||
int ret;
|
||||
wchar_t wpath[MAX_PATH];
|
||||
wchar_t wpath[MAX_LONG_PATH];
|
||||
|
||||
if (!is_valid_win32_path(path, 0)) {
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (xutftowcs_path(wpath, path) < 0)
|
||||
/* CreateDirectoryW path limit is 248 (MAX_PATH - 8.3 file name) */
|
||||
if (xutftowcs_path_ex(wpath, path, MAX_LONG_PATH, -1, 248,
|
||||
are_long_paths_enabled()) < 0)
|
||||
return -1;
|
||||
|
||||
ret = _wmkdir(wpath);
|
||||
if (!ret)
|
||||
process_phantom_symlinks();
|
||||
@ -773,7 +804,7 @@ int mingw_open (const char *filename, int oflags, ...)
|
||||
va_list args;
|
||||
unsigned mode;
|
||||
int fd, create = (oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL);
|
||||
wchar_t wfilename[MAX_PATH];
|
||||
wchar_t wfilename[MAX_LONG_PATH];
|
||||
open_fn_t open_fn;
|
||||
WIN32_FILE_ATTRIBUTE_DATA fdata;
|
||||
|
||||
@ -806,7 +837,7 @@ int mingw_open (const char *filename, int oflags, ...)
|
||||
|
||||
if (filename && !strcmp(filename, "/dev/null"))
|
||||
wcscpy(wfilename, L"nul");
|
||||
else if (xutftowcs_path(wfilename, filename) < 0)
|
||||
else if (xutftowcs_long_path(wfilename, filename) < 0)
|
||||
return -1;
|
||||
|
||||
/*
|
||||
@ -892,14 +923,14 @@ FILE *mingw_fopen (const char *filename, const char *otype)
|
||||
{
|
||||
int hide = needs_hiding(filename);
|
||||
FILE *file;
|
||||
wchar_t wfilename[MAX_PATH], wotype[4];
|
||||
wchar_t wfilename[MAX_LONG_PATH], wotype[4];
|
||||
if (filename && !strcmp(filename, "/dev/null"))
|
||||
wcscpy(wfilename, L"nul");
|
||||
else if (!is_valid_win32_path(filename, 1)) {
|
||||
int create = otype && strchr(otype, 'w');
|
||||
errno = create ? EINVAL : ENOENT;
|
||||
return NULL;
|
||||
} else if (xutftowcs_path(wfilename, filename) < 0)
|
||||
} else if (xutftowcs_long_path(wfilename, filename) < 0)
|
||||
return NULL;
|
||||
|
||||
if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
|
||||
@ -921,14 +952,14 @@ FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
|
||||
{
|
||||
int hide = needs_hiding(filename);
|
||||
FILE *file;
|
||||
wchar_t wfilename[MAX_PATH], wotype[4];
|
||||
wchar_t wfilename[MAX_LONG_PATH], wotype[4];
|
||||
if (filename && !strcmp(filename, "/dev/null"))
|
||||
wcscpy(wfilename, L"nul");
|
||||
else if (!is_valid_win32_path(filename, 1)) {
|
||||
int create = otype && strchr(otype, 'w');
|
||||
errno = create ? EINVAL : ENOENT;
|
||||
return NULL;
|
||||
} else if (xutftowcs_path(wfilename, filename) < 0)
|
||||
} else if (xutftowcs_long_path(wfilename, filename) < 0)
|
||||
return NULL;
|
||||
|
||||
if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
|
||||
@ -978,7 +1009,7 @@ ssize_t mingw_write(int fd, const void *buf, size_t len)
|
||||
HANDLE h = (HANDLE) _get_osfhandle(fd);
|
||||
if (GetFileType(h) != FILE_TYPE_PIPE) {
|
||||
if (orig == EINVAL) {
|
||||
wchar_t path[MAX_PATH];
|
||||
wchar_t path[MAX_LONG_PATH];
|
||||
DWORD ret = GetFinalPathNameByHandleW(h, path,
|
||||
ARRAY_SIZE(path), 0);
|
||||
UINT drive_type = ret > 0 && ret < ARRAY_SIZE(path) ?
|
||||
@ -1015,20 +1046,23 @@ ssize_t mingw_write(int fd, const void *buf, size_t len)
|
||||
|
||||
int mingw_access(const char *filename, int mode)
|
||||
{
|
||||
wchar_t wfilename[MAX_PATH];
|
||||
wchar_t wfilename[MAX_LONG_PATH];
|
||||
if (!strcmp("nul", filename) || !strcmp("/dev/null", filename))
|
||||
return 0;
|
||||
if (xutftowcs_path(wfilename, filename) < 0)
|
||||
if (xutftowcs_long_path(wfilename, filename) < 0)
|
||||
return -1;
|
||||
/* X_OK is not supported by the MSVCRT version */
|
||||
return _waccess(wfilename, mode & ~X_OK);
|
||||
}
|
||||
|
||||
/* cached length of current directory for handle_long_path */
|
||||
static int current_directory_len = 0;
|
||||
|
||||
int mingw_chdir(const char *dirname)
|
||||
{
|
||||
wchar_t wdirname[MAX_PATH];
|
||||
|
||||
if (xutftowcs_path(wdirname, dirname) < 0)
|
||||
int result;
|
||||
wchar_t wdirname[MAX_LONG_PATH];
|
||||
if (xutftowcs_long_path(wdirname, dirname) < 0)
|
||||
return -1;
|
||||
|
||||
if (has_symlinks) {
|
||||
@ -1047,35 +1081,19 @@ int mingw_chdir(const char *dirname)
|
||||
CloseHandle(hnd);
|
||||
}
|
||||
|
||||
return _wchdir(normalize_ntpath(wdirname));
|
||||
result = _wchdir(normalize_ntpath(wdirname));
|
||||
current_directory_len = GetCurrentDirectoryW(0, NULL);
|
||||
return result;
|
||||
}
|
||||
|
||||
int mingw_chmod(const char *filename, int mode)
|
||||
{
|
||||
wchar_t wfilename[MAX_PATH];
|
||||
if (xutftowcs_path(wfilename, filename) < 0)
|
||||
wchar_t wfilename[MAX_LONG_PATH];
|
||||
if (xutftowcs_long_path(wfilename, filename) < 0)
|
||||
return -1;
|
||||
return _wchmod(wfilename, mode);
|
||||
}
|
||||
|
||||
/*
|
||||
* The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
|
||||
* Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
|
||||
*/
|
||||
static inline long long filetime_to_hnsec(const FILETIME *ft)
|
||||
{
|
||||
long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
|
||||
/* Windows to Unix Epoch conversion */
|
||||
return winTime - 116444736000000000LL;
|
||||
}
|
||||
|
||||
static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts)
|
||||
{
|
||||
long long hnsec = filetime_to_hnsec(ft);
|
||||
ts->tv_sec = (time_t)(hnsec / 10000000);
|
||||
ts->tv_nsec = (hnsec % 10000000) * 100;
|
||||
}
|
||||
|
||||
/**
|
||||
* Verifies that safe_create_leading_directories() would succeed.
|
||||
*/
|
||||
@ -1205,8 +1223,8 @@ int mingw_lstat(const char *file_name, struct stat *buf)
|
||||
WIN32_FILE_ATTRIBUTE_DATA fdata;
|
||||
DWORD reparse_tag = 0;
|
||||
int link_len = 0;
|
||||
wchar_t wfilename[MAX_PATH];
|
||||
int wlen = xutftowcs_path(wfilename, file_name);
|
||||
wchar_t wfilename[MAX_LONG_PATH];
|
||||
int wlen = xutftowcs_long_path(wfilename, file_name);
|
||||
if (wlen < 0)
|
||||
return -1;
|
||||
|
||||
@ -1221,7 +1239,7 @@ int mingw_lstat(const char *file_name, struct stat *buf)
|
||||
if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
|
||||
/* for reparse points, get the link tag and length */
|
||||
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
|
||||
char tmpbuf[MAX_PATH];
|
||||
char tmpbuf[MAX_LONG_PATH];
|
||||
|
||||
if (read_reparse_point(wfilename, FALSE, tmpbuf,
|
||||
&link_len, &reparse_tag) < 0)
|
||||
@ -1268,6 +1286,8 @@ int mingw_lstat(const char *file_name, struct stat *buf)
|
||||
return -1;
|
||||
}
|
||||
|
||||
int (*lstat)(const char *file_name, struct stat *buf) = mingw_lstat;
|
||||
|
||||
static int get_file_info_by_handle(HANDLE hnd, struct stat *buf)
|
||||
{
|
||||
BY_HANDLE_FILE_INFORMATION fdata;
|
||||
@ -1293,12 +1313,12 @@ static int get_file_info_by_handle(HANDLE hnd, struct stat *buf)
|
||||
|
||||
int mingw_stat(const char *file_name, struct stat *buf)
|
||||
{
|
||||
wchar_t wfile_name[MAX_PATH];
|
||||
wchar_t wfile_name[MAX_LONG_PATH];
|
||||
HANDLE hnd;
|
||||
int result;
|
||||
|
||||
/* open the file and let Windows resolve the links */
|
||||
if (xutftowcs_path(wfile_name, file_name) < 0)
|
||||
if (xutftowcs_long_path(wfile_name, file_name) < 0)
|
||||
return -1;
|
||||
hnd = CreateFileW(wfile_name, 0,
|
||||
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
|
||||
@ -1366,10 +1386,10 @@ int mingw_utime (const char *file_name, const struct utimbuf *times)
|
||||
FILETIME mft, aft;
|
||||
int rc;
|
||||
DWORD attrs;
|
||||
wchar_t wfilename[MAX_PATH];
|
||||
wchar_t wfilename[MAX_LONG_PATH];
|
||||
HANDLE osfilehandle;
|
||||
|
||||
if (xutftowcs_path(wfilename, file_name) < 0)
|
||||
if (xutftowcs_long_path(wfilename, file_name) < 0)
|
||||
return -1;
|
||||
|
||||
/* must have write permission */
|
||||
@ -2073,6 +2093,10 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaen
|
||||
|
||||
if (*argv && !strcmp(cmd, *argv))
|
||||
wcmd[0] = L'\0';
|
||||
/*
|
||||
* Paths to executables and to the current directory do not support
|
||||
* long paths, therefore we cannot use xutftowcs_long_path() here.
|
||||
*/
|
||||
else if (xutftowcs_path(wcmd, cmd) < 0)
|
||||
return -1;
|
||||
if (dir && xutftowcs_path(wdir, dir) < 0)
|
||||
@ -2762,12 +2786,12 @@ int mingw_rename(const char *pold, const char *pnew)
|
||||
static int supports_file_rename_info_ex = 1;
|
||||
DWORD attrs = INVALID_FILE_ATTRIBUTES, gle;
|
||||
int tries = 0;
|
||||
wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
|
||||
wchar_t wpold[MAX_LONG_PATH], wpnew[MAX_LONG_PATH];
|
||||
int wpnew_len;
|
||||
|
||||
if (xutftowcs_path(wpold, pold) < 0)
|
||||
if (xutftowcs_long_path(wpold, pold) < 0)
|
||||
return -1;
|
||||
wpnew_len = xutftowcs_path(wpnew, pnew);
|
||||
wpnew_len = xutftowcs_long_path(wpnew, pnew);
|
||||
if (wpnew_len < 0)
|
||||
return -1;
|
||||
|
||||
@ -2797,9 +2821,9 @@ repeat:
|
||||
* flex array so that the structure has to be allocated on
|
||||
* the heap. As we declare this structure ourselves though
|
||||
* we can avoid the allocation and define FileName to have
|
||||
* MAX_PATH bytes.
|
||||
* MAX_LONG_PATH bytes.
|
||||
*/
|
||||
WCHAR FileName[MAX_PATH];
|
||||
WCHAR FileName[MAX_LONG_PATH];
|
||||
} rename_info = { 0 };
|
||||
HANDLE old_handle = INVALID_HANDLE_VALUE;
|
||||
BOOL success;
|
||||
@ -3153,9 +3177,9 @@ int mingw_raise(int sig)
|
||||
|
||||
int link(const char *oldpath, const char *newpath)
|
||||
{
|
||||
wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
|
||||
if (xutftowcs_path(woldpath, oldpath) < 0 ||
|
||||
xutftowcs_path(wnewpath, newpath) < 0)
|
||||
wchar_t woldpath[MAX_LONG_PATH], wnewpath[MAX_LONG_PATH];
|
||||
if (xutftowcs_long_path(woldpath, oldpath) < 0 ||
|
||||
xutftowcs_long_path(wnewpath, newpath) < 0)
|
||||
return -1;
|
||||
|
||||
if (!CreateHardLinkW(wnewpath, woldpath, NULL)) {
|
||||
@ -3167,7 +3191,7 @@ int link(const char *oldpath, const char *newpath)
|
||||
|
||||
int symlink(const char *target, const char *link)
|
||||
{
|
||||
wchar_t wtarget[MAX_PATH], wlink[MAX_PATH];
|
||||
wchar_t wtarget[MAX_LONG_PATH], wlink[MAX_LONG_PATH];
|
||||
int len;
|
||||
|
||||
/* fail if symlinks are disabled or API is not supported (WinXP) */
|
||||
@ -3176,8 +3200,8 @@ int symlink(const char *target, const char *link)
|
||||
return -1;
|
||||
}
|
||||
|
||||
if ((len = xutftowcs_path(wtarget, target)) < 0
|
||||
|| xutftowcs_path(wlink, link) < 0)
|
||||
if ((len = xutftowcs_long_path(wtarget, target)) < 0
|
||||
|| xutftowcs_long_path(wlink, link) < 0)
|
||||
return -1;
|
||||
|
||||
/* convert target dir separators to backslashes */
|
||||
@ -3231,12 +3255,12 @@ int symlink(const char *target, const char *link)
|
||||
|
||||
int readlink(const char *path, char *buf, size_t bufsiz)
|
||||
{
|
||||
WCHAR wpath[MAX_PATH];
|
||||
char tmpbuf[MAX_PATH];
|
||||
WCHAR wpath[MAX_LONG_PATH];
|
||||
char tmpbuf[MAX_LONG_PATH];
|
||||
int len;
|
||||
DWORD tag;
|
||||
|
||||
if (xutftowcs_path(wpath, path) < 0)
|
||||
if (xutftowcs_long_path(wpath, path) < 0)
|
||||
return -1;
|
||||
|
||||
if (read_reparse_point(wpath, TRUE, tmpbuf, &len, &tag) < 0)
|
||||
@ -3305,12 +3329,14 @@ pid_t waitpid(pid_t pid, int *status, int options)
|
||||
return -1;
|
||||
}
|
||||
|
||||
int (*win32_is_mount_point)(struct strbuf *path) = mingw_is_mount_point;
|
||||
|
||||
int mingw_is_mount_point(struct strbuf *path)
|
||||
{
|
||||
WIN32_FIND_DATAW findbuf = { 0 };
|
||||
HANDLE handle;
|
||||
wchar_t wfilename[MAX_PATH];
|
||||
int wlen = xutftowcs_path(wfilename, path->buf);
|
||||
wchar_t wfilename[MAX_LONG_PATH];
|
||||
int wlen = xutftowcs_long_path(wfilename, path->buf);
|
||||
if (wlen < 0)
|
||||
die(_("could not get long path for '%s'"), path->buf);
|
||||
|
||||
@ -3453,9 +3479,9 @@ static size_t append_system_bin_dirs(char *path, size_t size)
|
||||
|
||||
static int is_system32_path(const char *path)
|
||||
{
|
||||
WCHAR system32[MAX_PATH], wpath[MAX_PATH];
|
||||
WCHAR system32[MAX_LONG_PATH], wpath[MAX_LONG_PATH];
|
||||
|
||||
if (xutftowcs_path(wpath, path) < 0 ||
|
||||
if (xutftowcs_long_path(wpath, path) < 0 ||
|
||||
!GetSystemDirectoryW(system32, ARRAY_SIZE(system32)) ||
|
||||
_wcsicmp(system32, wpath))
|
||||
return 0;
|
||||
@ -3891,6 +3917,73 @@ not_a_reserved_name:
|
||||
}
|
||||
}
|
||||
|
||||
int handle_long_path(wchar_t *path, int len, int max_path, int expand)
|
||||
{
|
||||
int result;
|
||||
wchar_t buf[MAX_LONG_PATH];
|
||||
|
||||
/*
|
||||
* we don't need special handling if path is relative to the current
|
||||
* directory, and current directory + path don't exceed the desired
|
||||
* max_path limit. This should cover > 99 % of cases with minimal
|
||||
* performance impact (git almost always uses relative paths).
|
||||
*/
|
||||
if ((len < 2 || (!is_dir_sep(path[0]) && path[1] != ':')) &&
|
||||
(current_directory_len + len < max_path))
|
||||
return len;
|
||||
|
||||
/*
|
||||
* handle everything else:
|
||||
* - absolute paths: "C:\dir\file"
|
||||
* - absolute UNC paths: "\\server\share\dir\file"
|
||||
* - absolute paths on current drive: "\dir\file"
|
||||
* - relative paths on other drive: "X:file"
|
||||
* - prefixed paths: "\\?\...", "\\.\..."
|
||||
*/
|
||||
|
||||
/* convert to absolute path using GetFullPathNameW */
|
||||
result = GetFullPathNameW(path, MAX_LONG_PATH, buf, NULL);
|
||||
if (!result) {
|
||||
errno = err_win_to_posix(GetLastError());
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* return absolute path if it fits within max_path (even if
|
||||
* "cwd + path" doesn't due to '..' components)
|
||||
*/
|
||||
if (result < max_path) {
|
||||
/* Be careful not to add a drive prefix if there was none */
|
||||
if (is_wdir_sep(path[0]) &&
|
||||
!is_wdir_sep(buf[0]) && buf[1] == L':' && is_wdir_sep(buf[2]))
|
||||
wcscpy(path, buf + 2);
|
||||
else
|
||||
wcscpy(path, buf);
|
||||
return result;
|
||||
}
|
||||
|
||||
/* error out if we shouldn't expand the path or buf is too small */
|
||||
if (!expand || result >= MAX_LONG_PATH - 6) {
|
||||
errno = ENAMETOOLONG;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* prefix full path with "\\?\" or "\\?\UNC\" */
|
||||
if (buf[0] == '\\') {
|
||||
/* ...unless already prefixed */
|
||||
if (buf[1] == '\\' && (buf[2] == '?' || buf[2] == '.'))
|
||||
return len;
|
||||
|
||||
wcscpy(path, L"\\\\?\\UNC\\");
|
||||
wcscpy(path + 8, buf + 2);
|
||||
return result + 6;
|
||||
} else {
|
||||
wcscpy(path, L"\\\\?\\");
|
||||
wcscpy(path + 4, buf);
|
||||
return result + 4;
|
||||
}
|
||||
}
|
||||
|
||||
#if !defined(_MSC_VER)
|
||||
/*
|
||||
* Disable MSVCRT command line wildcard expansion (__getmainargs called from
|
||||
@ -4061,6 +4154,9 @@ int wmain(int argc, const wchar_t **wargv)
|
||||
InitializeCriticalSection(&pinfo_cs);
|
||||
InitializeCriticalSection(&phantom_symlinks_cs);
|
||||
|
||||
/* initialize critical section for fscache */
|
||||
InitializeCriticalSection(&fscache_cs);
|
||||
|
||||
/* set up default file mode and file modes for stdin/out/err */
|
||||
_fmode = _O_BINARY;
|
||||
_setmode(_fileno(stdin), _O_BINARY);
|
||||
@ -4070,6 +4166,9 @@ int wmain(int argc, const wchar_t **wargv)
|
||||
/* initialize Unicode console */
|
||||
winansi_init();
|
||||
|
||||
/* init length of current directory for handle_long_path */
|
||||
current_directory_len = GetCurrentDirectoryW(0, NULL);
|
||||
|
||||
/* invoke the real main() using our utf8 version of argv. */
|
||||
exit_status = main(argc, argv);
|
||||
|
||||
|
||||
@ -1,5 +1,8 @@
|
||||
#include "mingw-posix.h"
|
||||
|
||||
extern int core_fscache;
|
||||
int are_long_paths_enabled(void);
|
||||
|
||||
struct config_context;
|
||||
int mingw_core_config(const char *var, const char *value,
|
||||
const struct config_context *ctx, void *cb);
|
||||
@ -38,7 +41,8 @@ static inline void convert_slashes(char *path)
|
||||
}
|
||||
struct strbuf;
|
||||
int mingw_is_mount_point(struct strbuf *path);
|
||||
#define is_mount_point mingw_is_mount_point
|
||||
extern int (*win32_is_mount_point)(struct strbuf *path);
|
||||
#define is_mount_point win32_is_mount_point
|
||||
#define CAN_UNLINK_MOUNT_POINTS 1
|
||||
#define PATH_SEP ';'
|
||||
char *mingw_query_user_email(void);
|
||||
@ -75,6 +79,42 @@ int is_path_owned_by_current_sid(const char *path, struct strbuf *report);
|
||||
int is_valid_win32_path(const char *path, int allow_literal_nul);
|
||||
#define is_valid_path(path) is_valid_win32_path(path, 0)
|
||||
|
||||
/**
|
||||
* Max length of long paths (exceeding MAX_PATH). The actual maximum supported
|
||||
* by NTFS is 32,767 (* sizeof(wchar_t)), but we choose an arbitrary smaller
|
||||
* value to limit required stack memory.
|
||||
*/
|
||||
#define MAX_LONG_PATH 4096
|
||||
|
||||
/**
|
||||
* Handles paths that would exceed the MAX_PATH limit of Windows Unicode APIs.
|
||||
*
|
||||
* With expand == false, the function checks for over-long paths and fails
|
||||
* with ENAMETOOLONG. The path parameter is not modified, except if cwd + path
|
||||
* exceeds max_path, but the resulting absolute path doesn't (e.g. due to
|
||||
* eliminating '..' components). The path parameter must point to a buffer
|
||||
* of max_path wide characters.
|
||||
*
|
||||
* With expand == true, an over-long path is automatically converted in place
|
||||
* to an absolute path prefixed with '\\?\', and the new length is returned.
|
||||
* The path parameter must point to a buffer of MAX_LONG_PATH wide characters.
|
||||
*
|
||||
* Parameters:
|
||||
* path: path to check and / or convert
|
||||
* len: size of path on input (number of wide chars without \0)
|
||||
* max_path: max short path length to check (usually MAX_PATH = 260, but just
|
||||
* 248 for CreateDirectoryW)
|
||||
* expand: false to only check the length, true to expand the path to a
|
||||
* '\\?\'-prefixed absolute path
|
||||
*
|
||||
* Return:
|
||||
* length of the resulting path, or -1 on failure
|
||||
*
|
||||
* Errors:
|
||||
* ENAMETOOLONG if path is too long
|
||||
*/
|
||||
int handle_long_path(wchar_t *path, int len, int max_path, int expand);
|
||||
|
||||
/**
|
||||
* Converts UTF-8 encoded string to UTF-16LE.
|
||||
*
|
||||
@ -132,17 +172,45 @@ static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
|
||||
return xutftowcsn(wcs, utf, wcslen, -1);
|
||||
}
|
||||
|
||||
/**
|
||||
* Simplified file system specific wrapper of xutftowcsn and handle_long_path.
|
||||
* Converts ERANGE to ENAMETOOLONG. If expand is true, wcs must be at least
|
||||
* MAX_LONG_PATH wide chars (see handle_long_path).
|
||||
*/
|
||||
static inline int xutftowcs_path_ex(wchar_t *wcs, const char *utf,
|
||||
size_t wcslen, int utflen, int max_path, int expand)
|
||||
{
|
||||
int result = xutftowcsn(wcs, utf, wcslen, utflen);
|
||||
if (result < 0 && errno == ERANGE)
|
||||
errno = ENAMETOOLONG;
|
||||
if (result >= 0)
|
||||
result = handle_long_path(wcs, result, max_path, expand);
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* Simplified file system specific variant of xutftowcsn, assumes output
|
||||
* buffer size is MAX_PATH wide chars and input string is \0-terminated,
|
||||
* fails with ENAMETOOLONG if input string is too long.
|
||||
* fails with ENAMETOOLONG if input string is too long. Typically used for
|
||||
* Windows APIs that don't support long paths, e.g. SetCurrentDirectory,
|
||||
* LoadLibrary, CreateProcess...
|
||||
*/
|
||||
static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
|
||||
{
|
||||
int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
|
||||
if (result < 0 && errno == ERANGE)
|
||||
errno = ENAMETOOLONG;
|
||||
return result;
|
||||
return xutftowcs_path_ex(wcs, utf, MAX_PATH, -1, MAX_PATH, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* Simplified file system specific variant of xutftowcsn for Windows APIs
|
||||
* that support long paths via '\\?\'-prefix, assumes output buffer size is
|
||||
* MAX_LONG_PATH wide chars, fails with ENAMETOOLONG if input string is too
|
||||
* long. The 'core.longpaths' git-config option controls whether the path
|
||||
* is only checked or expanded to a long path.
|
||||
*/
|
||||
static inline int xutftowcs_long_path(wchar_t *wcs, const char *utf)
|
||||
{
|
||||
return xutftowcs_path_ex(wcs, utf, MAX_LONG_PATH, -1, MAX_PATH,
|
||||
are_long_paths_enabled());
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
@ -1,15 +1,21 @@
|
||||
#include "../../git-compat-util.h"
|
||||
|
||||
struct DIR {
|
||||
struct dirent dd_dir; /* includes d_type */
|
||||
#pragma GCC diagnostic push
|
||||
#pragma GCC diagnostic ignored "-Wpedantic"
|
||||
typedef struct dirent_DIR {
|
||||
struct DIR base_dir; /* extend base struct DIR */
|
||||
HANDLE dd_handle; /* FindFirstFile handle */
|
||||
int dd_stat; /* 0-based index */
|
||||
};
|
||||
struct dirent dd_dir; /* includes d_type */
|
||||
} dirent_DIR;
|
||||
#pragma GCC diagnostic pop
|
||||
|
||||
DIR *(*opendir)(const char *dirname) = dirent_opendir;
|
||||
|
||||
static inline void finddata2dirent(struct dirent *ent, WIN32_FIND_DATAW *fdata)
|
||||
{
|
||||
/* convert UTF-16 name to UTF-8 */
|
||||
xwcstoutf(ent->d_name, fdata->cFileName, sizeof(ent->d_name));
|
||||
/* convert UTF-16 name to UTF-8 (d_name points to dirent_DIR.dd_name) */
|
||||
xwcstoutf(ent->d_name, fdata->cFileName, MAX_PATH * 3);
|
||||
|
||||
/* Set file type, based on WIN32_FIND_DATA */
|
||||
if ((fdata->dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
|
||||
@ -21,41 +27,7 @@ static inline void finddata2dirent(struct dirent *ent, WIN32_FIND_DATAW *fdata)
|
||||
ent->d_type = DT_REG;
|
||||
}
|
||||
|
||||
DIR *opendir(const char *name)
|
||||
{
|
||||
wchar_t pattern[MAX_PATH + 2]; /* + 2 for '/' '*' */
|
||||
WIN32_FIND_DATAW fdata;
|
||||
HANDLE h;
|
||||
int len;
|
||||
DIR *dir;
|
||||
|
||||
/* convert name to UTF-16 and check length < MAX_PATH */
|
||||
if ((len = xutftowcs_path(pattern, name)) < 0)
|
||||
return NULL;
|
||||
|
||||
/* append optional '/' and wildcard '*' */
|
||||
if (len && !is_dir_sep(pattern[len - 1]))
|
||||
pattern[len++] = '/';
|
||||
pattern[len++] = '*';
|
||||
pattern[len] = 0;
|
||||
|
||||
/* open find handle */
|
||||
h = FindFirstFileW(pattern, &fdata);
|
||||
if (h == INVALID_HANDLE_VALUE) {
|
||||
DWORD err = GetLastError();
|
||||
errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* initialize DIR structure and copy first dir entry */
|
||||
dir = xmalloc(sizeof(DIR));
|
||||
dir->dd_handle = h;
|
||||
dir->dd_stat = 0;
|
||||
finddata2dirent(&dir->dd_dir, &fdata);
|
||||
return dir;
|
||||
}
|
||||
|
||||
struct dirent *readdir(DIR *dir)
|
||||
static struct dirent *dirent_readdir(dirent_DIR *dir)
|
||||
{
|
||||
if (!dir) {
|
||||
errno = EBADF; /* No set_errno for mingw */
|
||||
@ -82,7 +54,7 @@ struct dirent *readdir(DIR *dir)
|
||||
return &dir->dd_dir;
|
||||
}
|
||||
|
||||
int closedir(DIR *dir)
|
||||
static int dirent_closedir(dirent_DIR *dir)
|
||||
{
|
||||
if (!dir) {
|
||||
errno = EBADF;
|
||||
@ -93,3 +65,44 @@ int closedir(DIR *dir)
|
||||
free(dir);
|
||||
return 0;
|
||||
}
|
||||
|
||||
DIR *dirent_opendir(const char *name)
|
||||
{
|
||||
wchar_t pattern[MAX_LONG_PATH + 2]; /* + 2 for "\*" */
|
||||
WIN32_FIND_DATAW fdata;
|
||||
HANDLE h;
|
||||
int len;
|
||||
dirent_DIR *dir;
|
||||
|
||||
/* convert name to UTF-16 and check length */
|
||||
if ((len = xutftowcs_path_ex(pattern, name, MAX_LONG_PATH, -1,
|
||||
MAX_PATH - 2,
|
||||
are_long_paths_enabled())) < 0)
|
||||
return NULL;
|
||||
|
||||
/*
|
||||
* append optional '\' and wildcard '*'. Note: we need to use '\' as
|
||||
* Windows doesn't translate '/' to '\' for "\\?\"-prefixed paths.
|
||||
*/
|
||||
if (len && !is_dir_sep(pattern[len - 1]))
|
||||
pattern[len++] = '\\';
|
||||
pattern[len++] = '*';
|
||||
pattern[len] = 0;
|
||||
|
||||
/* open find handle */
|
||||
h = FindFirstFileW(pattern, &fdata);
|
||||
if (h == INVALID_HANDLE_VALUE) {
|
||||
DWORD err = GetLastError();
|
||||
errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* initialize DIR structure and copy first dir entry */
|
||||
dir = xmalloc(sizeof(dirent_DIR) + MAX_LONG_PATH);
|
||||
dir->base_dir.preaddir = (struct dirent *(*)(DIR *dir)) dirent_readdir;
|
||||
dir->base_dir.pclosedir = (int (*)(DIR *dir)) dirent_closedir;
|
||||
dir->dd_handle = h;
|
||||
dir->dd_stat = 0;
|
||||
finddata2dirent(&dir->dd_dir, &fdata);
|
||||
return (DIR*) dir;
|
||||
}
|
||||
|
||||
@ -1,20 +1,34 @@
|
||||
#ifndef DIRENT_H
|
||||
#define DIRENT_H
|
||||
|
||||
typedef struct DIR DIR;
|
||||
|
||||
#define DT_UNKNOWN 0
|
||||
#define DT_DIR 1
|
||||
#define DT_REG 2
|
||||
#define DT_LNK 3
|
||||
|
||||
struct dirent {
|
||||
unsigned char d_type; /* file type to prevent lstat after readdir */
|
||||
char d_name[MAX_PATH * 3]; /* file name (* 3 for UTF-8 conversion) */
|
||||
unsigned char d_type; /* file type to prevent lstat after readdir */
|
||||
char d_name[/* FLEX_ARRAY */]; /* file name */
|
||||
};
|
||||
|
||||
DIR *opendir(const char *dirname);
|
||||
struct dirent *readdir(DIR *dir);
|
||||
int closedir(DIR *dir);
|
||||
/*
|
||||
* Base DIR structure, contains pointers to readdir/closedir implementations so
|
||||
* that opendir may choose a concrete implementation on a call-by-call basis.
|
||||
*/
|
||||
typedef struct DIR {
|
||||
struct dirent *(*preaddir)(struct DIR *dir);
|
||||
int (*pclosedir)(struct DIR *dir);
|
||||
} DIR;
|
||||
|
||||
/* default dirent implementation */
|
||||
extern DIR *dirent_opendir(const char *dirname);
|
||||
|
||||
#define opendir git_opendir
|
||||
|
||||
/* current dirent implementation */
|
||||
extern DIR *(*opendir)(const char *dirname);
|
||||
|
||||
#define readdir(dir) (dir->preaddir(dir))
|
||||
#define closedir(dir) (dir->pclosedir(dir))
|
||||
|
||||
#endif /* DIRENT_H */
|
||||
|
||||
782
compat/win32/fscache.c
Normal file
782
compat/win32/fscache.c
Normal file
@ -0,0 +1,782 @@
|
||||
#include "../../git-compat-util.h"
|
||||
#include "../../hashmap.h"
|
||||
#include "../win32.h"
|
||||
#include "fscache.h"
|
||||
#include "../../dir.h"
|
||||
#include "../../abspath.h"
|
||||
#include "../../trace.h"
|
||||
#include "config.h"
|
||||
#include "../../mem-pool.h"
|
||||
#include "ntifs.h"
|
||||
|
||||
static volatile long initialized;
|
||||
static DWORD dwTlsIndex;
|
||||
CRITICAL_SECTION fscache_cs;
|
||||
|
||||
/*
|
||||
* Store one fscache per thread to avoid thread contention and locking.
|
||||
* This is ok because multi-threaded access is 1) uncommon and 2) always
|
||||
* splitting up the cache entries across multiple threads so there isn't
|
||||
* any overlap between threads anyway.
|
||||
*/
|
||||
struct fscache {
|
||||
volatile long enabled;
|
||||
struct hashmap map;
|
||||
struct mem_pool mem_pool;
|
||||
unsigned int lstat_requests;
|
||||
unsigned int opendir_requests;
|
||||
unsigned int fscache_requests;
|
||||
unsigned int fscache_misses;
|
||||
/*
|
||||
* 32k wide characters translates to 64kB, which is the maximum that
|
||||
* Windows 8.1 and earlier can handle. On network drives, not only
|
||||
* the client's Windows version matters, but also the server's,
|
||||
* therefore we need to keep this to 64kB.
|
||||
*/
|
||||
WCHAR buffer[32 * 1024];
|
||||
};
|
||||
static struct trace_key trace_fscache = TRACE_KEY_INIT(FSCACHE);
|
||||
|
||||
/*
|
||||
* An entry in the file system cache. Used for both entire directory listings
|
||||
* and file entries.
|
||||
*/
|
||||
#pragma GCC diagnostic push
|
||||
#pragma GCC diagnostic ignored "-Wpedantic"
|
||||
struct fsentry {
|
||||
struct hashmap_entry ent;
|
||||
mode_t st_mode;
|
||||
ULONG reparse_tag;
|
||||
/* Pointer to the directory listing, or NULL for the listing itself. */
|
||||
struct fsentry *list;
|
||||
/* Pointer to the next file entry of the list. */
|
||||
struct fsentry *next;
|
||||
|
||||
union {
|
||||
/* Reference count of the directory listing. */
|
||||
volatile long refcnt;
|
||||
struct {
|
||||
/* More stat members (only used for file entries). */
|
||||
off64_t st_size;
|
||||
struct timespec st_atim;
|
||||
struct timespec st_mtim;
|
||||
struct timespec st_ctim;
|
||||
} s;
|
||||
} u;
|
||||
|
||||
/* Length of name. */
|
||||
unsigned short len;
|
||||
/*
|
||||
* Name of the entry. For directory listings: relative path of the
|
||||
* directory, without trailing '/' (empty for cwd()). For file entries:
|
||||
* name of the file. Typically points to the end of the structure if
|
||||
* the fsentry is allocated on the heap (see fsentry_alloc), or to a
|
||||
* local variable if on the stack (see fsentry_init).
|
||||
*/
|
||||
struct dirent dirent;
|
||||
};
|
||||
#pragma GCC diagnostic pop
|
||||
|
||||
#pragma GCC diagnostic push
|
||||
#ifdef __clang__
|
||||
#pragma GCC diagnostic ignored "-Wflexible-array-extensions"
|
||||
#endif
|
||||
struct heap_fsentry {
|
||||
union {
|
||||
struct fsentry ent;
|
||||
char dummy[sizeof(struct fsentry) + MAX_LONG_PATH];
|
||||
} u;
|
||||
};
|
||||
#pragma GCC diagnostic pop
|
||||
|
||||
/*
|
||||
* Compares the paths of two fsentry structures for equality.
|
||||
*/
|
||||
static int fsentry_cmp(void *cmp_data UNUSED,
|
||||
const struct fsentry *fse1, const struct fsentry *fse2,
|
||||
void *keydata UNUSED)
|
||||
{
|
||||
int res;
|
||||
if (fse1 == fse2)
|
||||
return 0;
|
||||
|
||||
/* compare the list parts first */
|
||||
if (fse1->list != fse2->list &&
|
||||
(res = fsentry_cmp(NULL, fse1->list ? fse1->list : fse1,
|
||||
fse2->list ? fse2->list : fse2, NULL)))
|
||||
return res;
|
||||
|
||||
/* if list parts are equal, compare len and name */
|
||||
if (fse1->len != fse2->len)
|
||||
return fse1->len - fse2->len;
|
||||
return fspathncmp(fse1->dirent.d_name, fse2->dirent.d_name, fse1->len);
|
||||
}
|
||||
|
||||
/*
|
||||
* Calculates the hash code of an fsentry structure's path.
|
||||
*/
|
||||
static unsigned int fsentry_hash(const struct fsentry *fse)
|
||||
{
|
||||
unsigned int hash = fse->list ? fse->list->ent.hash : 0;
|
||||
return hash ^ memihash(fse->dirent.d_name, fse->len);
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize an fsentry structure for use by fsentry_hash and fsentry_cmp.
|
||||
*/
|
||||
static void fsentry_init(struct fsentry *fse, struct fsentry *list,
|
||||
const char *name, size_t len)
|
||||
{
|
||||
fse->list = list;
|
||||
if (len > MAX_LONG_PATH)
|
||||
BUG("Trying to allocate fsentry for long path '%.*s'",
|
||||
(int)len, name);
|
||||
memcpy(fse->dirent.d_name, name, len);
|
||||
fse->dirent.d_name[len] = 0;
|
||||
fse->len = len;
|
||||
hashmap_entry_init(&fse->ent, fsentry_hash(fse));
|
||||
}
|
||||
|
||||
/*
|
||||
* Allocate an fsentry structure on the heap.
|
||||
*/
|
||||
static struct fsentry *fsentry_alloc(struct fscache *cache, struct fsentry *list, const char *name,
|
||||
size_t len)
|
||||
{
|
||||
/* overallocate fsentry and copy the name to the end */
|
||||
struct fsentry *fse =
|
||||
mem_pool_alloc(&cache->mem_pool, sizeof(*fse) + len + 1);
|
||||
/* init the rest of the structure */
|
||||
fsentry_init(fse, list, name, len);
|
||||
fse->next = NULL;
|
||||
fse->u.refcnt = 1;
|
||||
return fse;
|
||||
}
|
||||
|
||||
/*
|
||||
* Add a reference to an fsentry.
|
||||
*/
|
||||
inline static void fsentry_addref(struct fsentry *fse)
|
||||
{
|
||||
if (fse->list)
|
||||
fse = fse->list;
|
||||
|
||||
InterlockedIncrement(&(fse->u.refcnt));
|
||||
}
|
||||
|
||||
/*
|
||||
* Release the reference to an fsentry.
|
||||
*/
|
||||
static void fsentry_release(struct fsentry *fse)
|
||||
{
|
||||
if (fse->list)
|
||||
fse = fse->list;
|
||||
|
||||
InterlockedDecrement(&(fse->u.refcnt));
|
||||
}
|
||||
|
||||
static int xwcstoutfn(char *utf, int utflen, const wchar_t *wcs, int wcslen)
|
||||
{
|
||||
if (!wcs || !utf || utflen < 1) {
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, wcslen, utf, utflen, NULL, NULL);
|
||||
if (utflen)
|
||||
return utflen;
|
||||
errno = ERANGE;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Allocate and initialize an fsentry from a FILE_FULL_DIR_INFORMATION structure.
|
||||
*/
|
||||
static struct fsentry *fseentry_create_entry(struct fscache *cache,
|
||||
struct fsentry *list,
|
||||
PFILE_FULL_DIR_INFORMATION fdata)
|
||||
{
|
||||
char buf[MAX_PATH * 3];
|
||||
int len;
|
||||
struct fsentry *fse;
|
||||
|
||||
len = xwcstoutfn(buf, ARRAY_SIZE(buf), fdata->FileName, fdata->FileNameLength / sizeof(wchar_t));
|
||||
|
||||
fse = fsentry_alloc(cache, list, buf, len);
|
||||
|
||||
fse->reparse_tag =
|
||||
fdata->FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT ?
|
||||
fdata->EaSize : 0;
|
||||
|
||||
fse->st_mode = file_attr_to_st_mode(fdata->FileAttributes,
|
||||
fdata->EaSize, buf);
|
||||
fse->dirent.d_type = S_ISREG(fse->st_mode) ? DT_REG :
|
||||
S_ISDIR(fse->st_mode) ? DT_DIR : DT_LNK;
|
||||
fse->u.s.st_size = S_ISLNK(fse->st_mode) ? MAX_LONG_PATH :
|
||||
fdata->EndOfFile.LowPart |
|
||||
(((off_t)fdata->EndOfFile.HighPart) << 32);
|
||||
filetime_to_timespec((FILETIME *)&(fdata->LastAccessTime),
|
||||
&(fse->u.s.st_atim));
|
||||
filetime_to_timespec((FILETIME *)&(fdata->LastWriteTime),
|
||||
&(fse->u.s.st_mtim));
|
||||
filetime_to_timespec((FILETIME *)&(fdata->CreationTime),
|
||||
&(fse->u.s.st_ctim));
|
||||
|
||||
return fse;
|
||||
}
|
||||
|
||||
/*
|
||||
* Create an fsentry-based directory listing (similar to opendir / readdir).
|
||||
* Dir should not contain trailing '/'. Use an empty string for the current
|
||||
* directory (not "."!).
|
||||
*/
|
||||
static struct fsentry *fsentry_create_list(struct fscache *cache, const struct fsentry *dir,
|
||||
int *dir_not_found)
|
||||
{
|
||||
wchar_t pattern[MAX_LONG_PATH];
|
||||
NTSTATUS status;
|
||||
IO_STATUS_BLOCK iosb;
|
||||
PFILE_FULL_DIR_INFORMATION di;
|
||||
HANDLE h;
|
||||
int wlen;
|
||||
struct fsentry *list, **phead;
|
||||
DWORD err;
|
||||
|
||||
*dir_not_found = 0;
|
||||
|
||||
/* convert name to UTF-16 and check length */
|
||||
if ((wlen = xutftowcs_path_ex(pattern, dir->dirent.d_name,
|
||||
MAX_LONG_PATH, dir->len, MAX_PATH - 2,
|
||||
are_long_paths_enabled())) < 0)
|
||||
return NULL;
|
||||
|
||||
/* handle CWD */
|
||||
if (!wlen) {
|
||||
wlen = GetCurrentDirectoryW(ARRAY_SIZE(pattern), pattern);
|
||||
if (!wlen || wlen >= (ssize_t)ARRAY_SIZE(pattern)) {
|
||||
errno = wlen ? ENAMETOOLONG : err_win_to_posix(GetLastError());
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
h = CreateFileW(pattern, FILE_LIST_DIRECTORY,
|
||||
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
||||
NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
|
||||
if (h == INVALID_HANDLE_VALUE) {
|
||||
err = GetLastError();
|
||||
*dir_not_found = 1; /* or empty directory */
|
||||
errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
|
||||
trace_printf_key(&trace_fscache, "fscache: error(%d) '%s'\n",
|
||||
errno, dir->dirent.d_name);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* allocate object to hold directory listing */
|
||||
list = fsentry_alloc(cache, NULL, dir->dirent.d_name, dir->len);
|
||||
list->st_mode = S_IFDIR;
|
||||
list->dirent.d_type = DT_DIR;
|
||||
|
||||
/* walk directory and build linked list of fsentry structures */
|
||||
phead = &list->next;
|
||||
status = NtQueryDirectoryFile(h, NULL, 0, 0, &iosb, cache->buffer,
|
||||
sizeof(cache->buffer), FileFullDirectoryInformation, FALSE, NULL, FALSE);
|
||||
if (!NT_SUCCESS(status)) {
|
||||
/*
|
||||
* NtQueryDirectoryFile returns STATUS_INVALID_PARAMETER when
|
||||
* asked to enumerate an invalid directory (ie it is a file
|
||||
* instead of a directory). Verify that is the actual cause
|
||||
* of the error.
|
||||
*/
|
||||
if (status == (NTSTATUS)STATUS_INVALID_PARAMETER) {
|
||||
DWORD attributes = GetFileAttributesW(pattern);
|
||||
if (!(attributes & FILE_ATTRIBUTE_DIRECTORY))
|
||||
status = ERROR_DIRECTORY;
|
||||
}
|
||||
goto Error;
|
||||
}
|
||||
di = (PFILE_FULL_DIR_INFORMATION)(cache->buffer);
|
||||
for (;;) {
|
||||
|
||||
*phead = fseentry_create_entry(cache, list, di);
|
||||
phead = &(*phead)->next;
|
||||
|
||||
/* If there is no offset in the entry, the buffer has been exhausted. */
|
||||
if (di->NextEntryOffset == 0) {
|
||||
status = NtQueryDirectoryFile(h, NULL, 0, 0, &iosb, cache->buffer,
|
||||
sizeof(cache->buffer), FileFullDirectoryInformation, FALSE, NULL, FALSE);
|
||||
if (!NT_SUCCESS(status)) {
|
||||
if (status == STATUS_NO_MORE_FILES)
|
||||
break;
|
||||
goto Error;
|
||||
}
|
||||
|
||||
di = (PFILE_FULL_DIR_INFORMATION)(cache->buffer);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Advance to the next entry. */
|
||||
di = (PFILE_FULL_DIR_INFORMATION)(((PUCHAR)di) + di->NextEntryOffset);
|
||||
}
|
||||
|
||||
CloseHandle(h);
|
||||
return list;
|
||||
|
||||
Error:
|
||||
trace_printf_key(&trace_fscache,
|
||||
"fscache: status(%ld) unable to query directory "
|
||||
"contents '%s'\n", status, dir->dirent.d_name);
|
||||
CloseHandle(h);
|
||||
fsentry_release(list);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* Adds a directory listing to the cache.
|
||||
*/
|
||||
static void fscache_add(struct fscache *cache, struct fsentry *fse)
|
||||
{
|
||||
if (fse->list)
|
||||
fse = fse->list;
|
||||
|
||||
for (; fse; fse = fse->next)
|
||||
hashmap_add(&cache->map, &fse->ent);
|
||||
}
|
||||
|
||||
/*
|
||||
* Clears the cache.
|
||||
*/
|
||||
static void fscache_clear(struct fscache *cache)
|
||||
{
|
||||
mem_pool_discard(&cache->mem_pool, 0);
|
||||
mem_pool_init(&cache->mem_pool, 0);
|
||||
hashmap_clear(&cache->map);
|
||||
hashmap_init(&cache->map, (hashmap_cmp_fn)fsentry_cmp, NULL, 0);
|
||||
cache->lstat_requests = cache->opendir_requests = 0;
|
||||
cache->fscache_misses = cache->fscache_requests = 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Checks if the cache is enabled for the given path.
|
||||
*/
|
||||
static int do_fscache_enabled(struct fscache *cache, const char *path)
|
||||
{
|
||||
return cache->enabled > 0 && !is_absolute_path(path);
|
||||
}
|
||||
|
||||
int fscache_enabled(const char *path)
|
||||
{
|
||||
struct fscache *cache = fscache_getcache();
|
||||
|
||||
return cache ? do_fscache_enabled(cache, path) : 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Looks up or creates a cache entry for the specified key.
|
||||
*/
|
||||
static struct fsentry *fscache_get(struct fscache *cache, struct fsentry *key)
|
||||
{
|
||||
struct fsentry *fse;
|
||||
int dir_not_found;
|
||||
|
||||
cache->fscache_requests++;
|
||||
/* check if entry is in cache */
|
||||
fse = hashmap_get_entry(&cache->map, key, ent, NULL);
|
||||
if (fse) {
|
||||
if (fse->st_mode)
|
||||
fsentry_addref(fse);
|
||||
else
|
||||
fse = NULL; /* non-existing directory */
|
||||
return fse;
|
||||
}
|
||||
/* if looking for a file, check if directory listing is in cache */
|
||||
if (!fse && key->list) {
|
||||
fse = hashmap_get_entry(&cache->map, key->list, ent, NULL);
|
||||
if (fse) {
|
||||
/*
|
||||
* dir entry without file entry, or dir does not
|
||||
* exist -> file doesn't exist
|
||||
*/
|
||||
errno = ENOENT;
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* create the directory listing */
|
||||
fse = fsentry_create_list(cache, key->list ? key->list : key, &dir_not_found);
|
||||
|
||||
/* leave on error (errno set by fsentry_create_list) */
|
||||
if (!fse) {
|
||||
if (dir_not_found && key->list) {
|
||||
/*
|
||||
* Record that the directory does not exist (or is
|
||||
* empty, which for all practical matters is the same
|
||||
* thing as far as fscache is concerned).
|
||||
*/
|
||||
fse = fsentry_alloc(cache, key->list->list,
|
||||
key->list->dirent.d_name,
|
||||
key->list->len);
|
||||
fse->st_mode = 0;
|
||||
hashmap_add(&cache->map, &fse->ent);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* add directory listing to the cache */
|
||||
cache->fscache_misses++;
|
||||
fscache_add(cache, fse);
|
||||
|
||||
/* lookup file entry if requested (fse already points to directory) */
|
||||
if (key->list)
|
||||
fse = hashmap_get_entry(&cache->map, key, ent, NULL);
|
||||
|
||||
if (fse && !fse->st_mode)
|
||||
fse = NULL; /* non-existing directory */
|
||||
|
||||
/* return entry or ENOENT */
|
||||
if (fse)
|
||||
fsentry_addref(fse);
|
||||
else
|
||||
errno = ENOENT;
|
||||
|
||||
return fse;
|
||||
}
|
||||
|
||||
/*
|
||||
* Enables the cache. Note that the cache is read-only, changes to
|
||||
* the working directory are NOT reflected in the cache while enabled.
|
||||
*/
|
||||
int fscache_enable(size_t initial_size)
|
||||
{
|
||||
int fscache;
|
||||
struct fscache *cache;
|
||||
int result = 0;
|
||||
|
||||
/* allow the cache to be disabled entirely */
|
||||
fscache = git_env_bool("GIT_TEST_FSCACHE", -1);
|
||||
if (fscache != -1)
|
||||
core_fscache = fscache;
|
||||
if (!core_fscache)
|
||||
return 0;
|
||||
|
||||
/*
|
||||
* refcount the global fscache initialization so that the
|
||||
* opendir and lstat function pointers are redirected if
|
||||
* any threads are using the fscache.
|
||||
*/
|
||||
EnterCriticalSection(&fscache_cs);
|
||||
if (!initialized) {
|
||||
if (!dwTlsIndex) {
|
||||
dwTlsIndex = TlsAlloc();
|
||||
if (dwTlsIndex == TLS_OUT_OF_INDEXES) {
|
||||
LeaveCriticalSection(&fscache_cs);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* redirect opendir and lstat to the fscache implementations */
|
||||
opendir = fscache_opendir;
|
||||
lstat = fscache_lstat;
|
||||
win32_is_mount_point = fscache_is_mount_point;
|
||||
}
|
||||
initialized++;
|
||||
LeaveCriticalSection(&fscache_cs);
|
||||
|
||||
/* refcount the thread specific initialization */
|
||||
cache = fscache_getcache();
|
||||
if (cache) {
|
||||
cache->enabled++;
|
||||
} else {
|
||||
cache = (struct fscache *)xcalloc(1, sizeof(*cache));
|
||||
cache->enabled = 1;
|
||||
/*
|
||||
* avoid having to rehash by leaving room for the parent dirs.
|
||||
* '4' was determined empirically by testing several repos
|
||||
*/
|
||||
hashmap_init(&cache->map, (hashmap_cmp_fn)fsentry_cmp, NULL, initial_size * 4);
|
||||
mem_pool_init(&cache->mem_pool, 0);
|
||||
if (!TlsSetValue(dwTlsIndex, cache))
|
||||
BUG("TlsSetValue error");
|
||||
}
|
||||
|
||||
trace_printf_key(&trace_fscache, "fscache: enable\n");
|
||||
return result;
|
||||
}
|
||||
|
||||
/*
|
||||
* Disables the cache.
|
||||
*/
|
||||
void fscache_disable(void)
|
||||
{
|
||||
struct fscache *cache;
|
||||
|
||||
if (!core_fscache)
|
||||
return;
|
||||
|
||||
/* update the thread specific fscache initialization */
|
||||
cache = fscache_getcache();
|
||||
if (!cache)
|
||||
BUG("fscache_disable() called on a thread where fscache has not been initialized");
|
||||
if (!cache->enabled)
|
||||
BUG("fscache_disable() called on an fscache that is already disabled");
|
||||
cache->enabled--;
|
||||
if (!cache->enabled) {
|
||||
TlsSetValue(dwTlsIndex, NULL);
|
||||
trace_printf_key(&trace_fscache, "fscache_disable: lstat %u, opendir %u, "
|
||||
"total requests/misses %u/%u\n",
|
||||
cache->lstat_requests, cache->opendir_requests,
|
||||
cache->fscache_requests, cache->fscache_misses);
|
||||
mem_pool_discard(&cache->mem_pool, 0);
|
||||
hashmap_clear(&cache->map);
|
||||
free(cache);
|
||||
}
|
||||
|
||||
/* update the global fscache initialization */
|
||||
EnterCriticalSection(&fscache_cs);
|
||||
initialized--;
|
||||
if (!initialized) {
|
||||
/* reset opendir and lstat to the original implementations */
|
||||
opendir = dirent_opendir;
|
||||
lstat = mingw_lstat;
|
||||
win32_is_mount_point = mingw_is_mount_point;
|
||||
}
|
||||
LeaveCriticalSection(&fscache_cs);
|
||||
|
||||
trace_printf_key(&trace_fscache, "fscache: disable\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* Flush cached stats result when fscache is enabled.
|
||||
*/
|
||||
void fscache_flush(void)
|
||||
{
|
||||
struct fscache *cache = fscache_getcache();
|
||||
|
||||
if (cache && cache->enabled) {
|
||||
fscache_clear(cache);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Lstat replacement, uses the cache if enabled, otherwise redirects to
|
||||
* mingw_lstat.
|
||||
*/
|
||||
int fscache_lstat(const char *filename, struct stat *st)
|
||||
{
|
||||
int dirlen, base, len;
|
||||
#pragma GCC diagnostic push
|
||||
#ifdef __clang__
|
||||
#pragma GCC diagnostic ignored "-Wflexible-array-extensions"
|
||||
#endif
|
||||
struct heap_fsentry key[2];
|
||||
#pragma GCC diagnostic pop
|
||||
struct fsentry *fse;
|
||||
struct fscache *cache = fscache_getcache();
|
||||
|
||||
if (!cache || !do_fscache_enabled(cache, filename))
|
||||
return mingw_lstat(filename, st);
|
||||
|
||||
cache->lstat_requests++;
|
||||
/* split filename into path + name */
|
||||
len = strlen(filename);
|
||||
if (len && is_dir_sep(filename[len - 1]))
|
||||
len--;
|
||||
base = len;
|
||||
while (base && !is_dir_sep(filename[base - 1]))
|
||||
base--;
|
||||
dirlen = base ? base - 1 : 0;
|
||||
|
||||
/* lookup entry for path + name in cache */
|
||||
fsentry_init(&key[0].u.ent, NULL, filename, dirlen);
|
||||
fsentry_init(&key[1].u.ent, &key[0].u.ent, filename + base, len - base);
|
||||
fse = fscache_get(cache, &key[1].u.ent);
|
||||
if (!fse) {
|
||||
errno = ENOENT;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Special case symbolic links: FindFirstFile()/FindNextFile() did not
|
||||
* provide us with the length of the target path.
|
||||
*/
|
||||
if (fse->u.s.st_size == MAX_LONG_PATH && S_ISLNK(fse->st_mode)) {
|
||||
char buf[MAX_LONG_PATH];
|
||||
int len = readlink(filename, buf, sizeof(buf) - 1);
|
||||
|
||||
if (len > 0)
|
||||
fse->u.s.st_size = len;
|
||||
}
|
||||
|
||||
/* copy stat data */
|
||||
st->st_ino = 0;
|
||||
st->st_gid = 0;
|
||||
st->st_uid = 0;
|
||||
st->st_dev = 0;
|
||||
st->st_rdev = 0;
|
||||
st->st_nlink = 1;
|
||||
st->st_mode = fse->st_mode;
|
||||
st->st_size = fse->u.s.st_size;
|
||||
st->st_atim = fse->u.s.st_atim;
|
||||
st->st_mtim = fse->u.s.st_mtim;
|
||||
st->st_ctim = fse->u.s.st_ctim;
|
||||
|
||||
/* don't forget to release fsentry */
|
||||
fsentry_release(fse);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* is_mount_point() replacement, uses cache if enabled, otherwise falls
|
||||
* back to mingw_is_mount_point().
|
||||
*/
|
||||
int fscache_is_mount_point(struct strbuf *path)
|
||||
{
|
||||
int dirlen, base, len;
|
||||
#pragma GCC diagnostic push
|
||||
#ifdef __clang__
|
||||
#pragma GCC diagnostic ignored "-Wflexible-array-extensions"
|
||||
#endif
|
||||
struct heap_fsentry key[2];
|
||||
#pragma GCC diagnostic pop
|
||||
struct fsentry *fse;
|
||||
struct fscache *cache = fscache_getcache();
|
||||
|
||||
if (!cache || !do_fscache_enabled(cache, path->buf))
|
||||
return mingw_is_mount_point(path);
|
||||
|
||||
cache->lstat_requests++;
|
||||
/* split path into path + name */
|
||||
len = path->len;
|
||||
if (len && is_dir_sep(path->buf[len - 1]))
|
||||
len--;
|
||||
base = len;
|
||||
while (base && !is_dir_sep(path->buf[base - 1]))
|
||||
base--;
|
||||
dirlen = base ? base - 1 : 0;
|
||||
|
||||
/* lookup entry for path + name in cache */
|
||||
fsentry_init(&key[0].u.ent, NULL, path->buf, dirlen);
|
||||
fsentry_init(&key[1].u.ent, &key[0].u.ent, path->buf + base, len - base);
|
||||
fse = fscache_get(cache, &key[1].u.ent);
|
||||
if (!fse)
|
||||
return mingw_is_mount_point(path);
|
||||
return fse->reparse_tag == IO_REPARSE_TAG_MOUNT_POINT;
|
||||
}
|
||||
|
||||
typedef struct fscache_DIR {
|
||||
struct DIR base_dir; /* extend base struct DIR */
|
||||
struct fsentry *pfsentry;
|
||||
struct dirent *dirent;
|
||||
} fscache_DIR;
|
||||
|
||||
/*
|
||||
* Readdir replacement.
|
||||
*/
|
||||
static struct dirent *fscache_readdir(DIR *base_dir)
|
||||
{
|
||||
fscache_DIR *dir = (fscache_DIR*) base_dir;
|
||||
struct fsentry *next = dir->pfsentry->next;
|
||||
if (!next)
|
||||
return NULL;
|
||||
dir->pfsentry = next;
|
||||
dir->dirent = &next->dirent;
|
||||
return dir->dirent;
|
||||
}
|
||||
|
||||
/*
|
||||
* Closedir replacement.
|
||||
*/
|
||||
static int fscache_closedir(DIR *base_dir)
|
||||
{
|
||||
fscache_DIR *dir = (fscache_DIR*) base_dir;
|
||||
fsentry_release(dir->pfsentry);
|
||||
free(dir);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Opendir replacement, uses a directory listing from the cache if enabled,
|
||||
* otherwise calls original dirent implementation.
|
||||
*/
|
||||
DIR *fscache_opendir(const char *dirname)
|
||||
{
|
||||
struct heap_fsentry key;
|
||||
struct fsentry *list;
|
||||
fscache_DIR *dir;
|
||||
int len;
|
||||
struct fscache *cache = fscache_getcache();
|
||||
|
||||
if (!cache || !do_fscache_enabled(cache, dirname))
|
||||
return dirent_opendir(dirname);
|
||||
|
||||
cache->opendir_requests++;
|
||||
/* prepare name (strip trailing '/', replace '.') */
|
||||
len = strlen(dirname);
|
||||
if ((len == 1 && dirname[0] == '.') ||
|
||||
(len && is_dir_sep(dirname[len - 1])))
|
||||
len--;
|
||||
|
||||
/* get directory listing from cache */
|
||||
fsentry_init(&key.u.ent, NULL, dirname, len);
|
||||
list = fscache_get(cache, &key.u.ent);
|
||||
if (!list)
|
||||
return NULL;
|
||||
|
||||
/* alloc and return DIR structure */
|
||||
dir = (fscache_DIR*) xmalloc(sizeof(fscache_DIR));
|
||||
dir->base_dir.preaddir = fscache_readdir;
|
||||
dir->base_dir.pclosedir = fscache_closedir;
|
||||
dir->pfsentry = list;
|
||||
return (DIR*) dir;
|
||||
}
|
||||
|
||||
struct fscache *fscache_getcache(void)
|
||||
{
|
||||
return (struct fscache *)TlsGetValue(dwTlsIndex);
|
||||
}
|
||||
|
||||
void fscache_merge(struct fscache *dest)
|
||||
{
|
||||
struct hashmap_iter iter;
|
||||
struct hashmap_entry *e;
|
||||
struct fscache *cache = fscache_getcache();
|
||||
|
||||
/*
|
||||
* Only do the merge if fscache was enabled and we have a dest
|
||||
* cache to merge into.
|
||||
*/
|
||||
if (!dest) {
|
||||
fscache_enable(0);
|
||||
return;
|
||||
}
|
||||
if (!cache)
|
||||
BUG("fscache_merge() called on a thread where fscache has not been initialized");
|
||||
|
||||
TlsSetValue(dwTlsIndex, NULL);
|
||||
trace_printf_key(&trace_fscache, "fscache_merge: lstat %u, opendir %u, "
|
||||
"total requests/misses %u/%u\n",
|
||||
cache->lstat_requests, cache->opendir_requests,
|
||||
cache->fscache_requests, cache->fscache_misses);
|
||||
|
||||
/*
|
||||
* This is only safe because the primary thread we're merging into
|
||||
* isn't being used so the critical section only needs to prevent
|
||||
* the the child threads from stomping on each other.
|
||||
*/
|
||||
EnterCriticalSection(&fscache_cs);
|
||||
|
||||
hashmap_iter_init(&cache->map, &iter);
|
||||
while ((e = hashmap_iter_next(&iter)))
|
||||
hashmap_add(&dest->map, e);
|
||||
|
||||
mem_pool_combine(&dest->mem_pool, &cache->mem_pool);
|
||||
|
||||
dest->lstat_requests += cache->lstat_requests;
|
||||
dest->opendir_requests += cache->opendir_requests;
|
||||
dest->fscache_requests += cache->fscache_requests;
|
||||
dest->fscache_misses += cache->fscache_misses;
|
||||
initialized--;
|
||||
LeaveCriticalSection(&fscache_cs);
|
||||
|
||||
free(cache);
|
||||
|
||||
}
|
||||
36
compat/win32/fscache.h
Normal file
36
compat/win32/fscache.h
Normal file
@ -0,0 +1,36 @@
|
||||
#ifndef FSCACHE_H
|
||||
#define FSCACHE_H
|
||||
|
||||
/*
|
||||
* The fscache is thread specific. enable_fscache() must be called
|
||||
* for each thread where caching is desired.
|
||||
*/
|
||||
|
||||
extern CRITICAL_SECTION fscache_cs;
|
||||
|
||||
int fscache_enable(size_t initial_size);
|
||||
#define enable_fscache(initial_size) fscache_enable(initial_size)
|
||||
|
||||
void fscache_disable(void);
|
||||
#define disable_fscache() fscache_disable()
|
||||
|
||||
int fscache_enabled(const char *path);
|
||||
#define is_fscache_enabled(path) fscache_enabled(path)
|
||||
|
||||
void fscache_flush(void);
|
||||
#define flush_fscache() fscache_flush()
|
||||
|
||||
DIR *fscache_opendir(const char *dir);
|
||||
int fscache_lstat(const char *file_name, struct stat *buf);
|
||||
int fscache_is_mount_point(struct strbuf *path);
|
||||
|
||||
/* opaque fscache structure */
|
||||
struct fscache;
|
||||
|
||||
struct fscache *fscache_getcache(void);
|
||||
#define getcache_fscache() fscache_getcache()
|
||||
|
||||
void fscache_merge(struct fscache *dest);
|
||||
#define merge_fscache(dest) fscache_merge(dest)
|
||||
|
||||
#endif
|
||||
131
compat/win32/ntifs.h
Normal file
131
compat/win32/ntifs.h
Normal file
@ -0,0 +1,131 @@
|
||||
#ifndef _NTIFS_
|
||||
#define _NTIFS_
|
||||
|
||||
/*
|
||||
* Copy necessary structures and definitions out of the Windows DDK
|
||||
* to enable calling NtQueryDirectoryFile()
|
||||
*/
|
||||
|
||||
typedef _Return_type_success_(return >= 0) LONG NTSTATUS;
|
||||
#define NT_SUCCESS(Status) (((NTSTATUS)(Status)) >= 0)
|
||||
|
||||
#if !defined(_NTSECAPI_) && !defined(_WINTERNL_) && \
|
||||
!defined(__UNICODE_STRING_DEFINED)
|
||||
#define __UNICODE_STRING_DEFINED
|
||||
typedef struct _UNICODE_STRING {
|
||||
USHORT Length;
|
||||
USHORT MaximumLength;
|
||||
PWSTR Buffer;
|
||||
} UNICODE_STRING;
|
||||
typedef UNICODE_STRING *PUNICODE_STRING;
|
||||
typedef const UNICODE_STRING *PCUNICODE_STRING;
|
||||
#endif /* !_NTSECAPI_ && !_WINTERNL_ && !__UNICODE_STRING_DEFINED */
|
||||
|
||||
typedef enum _FILE_INFORMATION_CLASS {
|
||||
FileDirectoryInformation = 1,
|
||||
FileFullDirectoryInformation,
|
||||
FileBothDirectoryInformation,
|
||||
FileBasicInformation,
|
||||
FileStandardInformation,
|
||||
FileInternalInformation,
|
||||
FileEaInformation,
|
||||
FileAccessInformation,
|
||||
FileNameInformation,
|
||||
FileRenameInformation,
|
||||
FileLinkInformation,
|
||||
FileNamesInformation,
|
||||
FileDispositionInformation,
|
||||
FilePositionInformation,
|
||||
FileFullEaInformation,
|
||||
FileModeInformation,
|
||||
FileAlignmentInformation,
|
||||
FileAllInformation,
|
||||
FileAllocationInformation,
|
||||
FileEndOfFileInformation,
|
||||
FileAlternateNameInformation,
|
||||
FileStreamInformation,
|
||||
FilePipeInformation,
|
||||
FilePipeLocalInformation,
|
||||
FilePipeRemoteInformation,
|
||||
FileMailslotQueryInformation,
|
||||
FileMailslotSetInformation,
|
||||
FileCompressionInformation,
|
||||
FileObjectIdInformation,
|
||||
FileCompletionInformation,
|
||||
FileMoveClusterInformation,
|
||||
FileQuotaInformation,
|
||||
FileReparsePointInformation,
|
||||
FileNetworkOpenInformation,
|
||||
FileAttributeTagInformation,
|
||||
FileTrackingInformation,
|
||||
FileIdBothDirectoryInformation,
|
||||
FileIdFullDirectoryInformation,
|
||||
FileValidDataLengthInformation,
|
||||
FileShortNameInformation,
|
||||
FileIoCompletionNotificationInformation,
|
||||
FileIoStatusBlockRangeInformation,
|
||||
FileIoPriorityHintInformation,
|
||||
FileSfioReserveInformation,
|
||||
FileSfioVolumeInformation,
|
||||
FileHardLinkInformation,
|
||||
FileProcessIdsUsingFileInformation,
|
||||
FileNormalizedNameInformation,
|
||||
FileNetworkPhysicalNameInformation,
|
||||
FileIdGlobalTxDirectoryInformation,
|
||||
FileIsRemoteDeviceInformation,
|
||||
FileAttributeCacheInformation,
|
||||
FileNumaNodeInformation,
|
||||
FileStandardLinkInformation,
|
||||
FileRemoteProtocolInformation,
|
||||
FileMaximumInformation
|
||||
} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;
|
||||
|
||||
typedef struct _FILE_FULL_DIR_INFORMATION {
|
||||
ULONG NextEntryOffset;
|
||||
ULONG FileIndex;
|
||||
LARGE_INTEGER CreationTime;
|
||||
LARGE_INTEGER LastAccessTime;
|
||||
LARGE_INTEGER LastWriteTime;
|
||||
LARGE_INTEGER ChangeTime;
|
||||
LARGE_INTEGER EndOfFile;
|
||||
LARGE_INTEGER AllocationSize;
|
||||
ULONG FileAttributes;
|
||||
ULONG FileNameLength;
|
||||
ULONG EaSize;
|
||||
WCHAR FileName[1];
|
||||
} FILE_FULL_DIR_INFORMATION, *PFILE_FULL_DIR_INFORMATION;
|
||||
|
||||
typedef struct _IO_STATUS_BLOCK {
|
||||
union {
|
||||
NTSTATUS Status;
|
||||
PVOID Pointer;
|
||||
} u;
|
||||
ULONG_PTR Information;
|
||||
} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;
|
||||
|
||||
typedef VOID
|
||||
(NTAPI *PIO_APC_ROUTINE)(
|
||||
IN PVOID ApcContext,
|
||||
IN PIO_STATUS_BLOCK IoStatusBlock,
|
||||
IN ULONG Reserved);
|
||||
|
||||
NTSYSCALLAPI
|
||||
NTSTATUS
|
||||
NTAPI
|
||||
NtQueryDirectoryFile(
|
||||
_In_ HANDLE FileHandle,
|
||||
_In_opt_ HANDLE Event,
|
||||
_In_opt_ PIO_APC_ROUTINE ApcRoutine,
|
||||
_In_opt_ PVOID ApcContext,
|
||||
_Out_ PIO_STATUS_BLOCK IoStatusBlock,
|
||||
_Out_writes_bytes_(Length) PVOID FileInformation,
|
||||
_In_ ULONG Length,
|
||||
_In_ FILE_INFORMATION_CLASS FileInformationClass,
|
||||
_In_ BOOLEAN ReturnSingleEntry,
|
||||
_In_opt_ PUNICODE_STRING FileName,
|
||||
_In_ BOOLEAN RestartScan
|
||||
);
|
||||
|
||||
#define STATUS_NO_MORE_FILES ((NTSTATUS)0x80000006L)
|
||||
|
||||
#endif
|
||||
@ -509,7 +509,7 @@ endif
|
||||
compat/win32/path-utils.o \
|
||||
compat/win32/pthread.o compat/win32/syslog.o \
|
||||
compat/win32/trace2_win32_process_info.o \
|
||||
compat/win32/dirent.o
|
||||
compat/win32/dirent.o compat/win32/fscache.o
|
||||
COMPAT_CFLAGS = -D__USE_MINGW_ACCESS -DDETECT_MSYS_TTY \
|
||||
-DENSURE_MSYSTEM_IS_SET="\"$(MSYSTEM)\"" -DMINGW_PREFIX="\"$(patsubst /%,%,$(MINGW_PREFIX))\"" \
|
||||
-DNOGDI -DHAVE_STRING_H -Icompat -Icompat/regex -Icompat/win32 -DSTRIP_EXTENSION=\".exe\"
|
||||
@ -714,7 +714,7 @@ ifeq ($(uname_S),MINGW)
|
||||
compat/win32/flush.o \
|
||||
compat/win32/path-utils.o \
|
||||
compat/win32/pthread.o compat/win32/syslog.o \
|
||||
compat/win32/dirent.o
|
||||
compat/win32/dirent.o compat/win32/fscache.o
|
||||
BASIC_CFLAGS += -DWIN32
|
||||
EXTLIBS += -lws2_32
|
||||
GITLIBS += git.res
|
||||
|
||||
@ -301,7 +301,8 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
|
||||
compat/win32/trace2_win32_process_info.c
|
||||
compat/win32/dirent.c
|
||||
compat/nedmalloc/nedmalloc.c
|
||||
compat/strdup.c)
|
||||
compat/strdup.c
|
||||
compat/win32/fscache.c)
|
||||
set(NO_UNIX_SOCKETS 1)
|
||||
|
||||
elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
|
||||
|
||||
66
dir.c
66
dir.c
@ -1156,16 +1156,64 @@ static int add_patterns(const char *fname, const char *base, int baselen,
|
||||
size_t size = 0;
|
||||
char *buf;
|
||||
|
||||
if (flags & PATTERN_NOFOLLOW)
|
||||
fd = open_nofollow(fname, O_RDONLY);
|
||||
else
|
||||
fd = open(fname, O_RDONLY);
|
||||
|
||||
if (fd < 0 || fstat(fd, &st) < 0) {
|
||||
if (fd < 0)
|
||||
warn_on_fopen_errors(fname);
|
||||
/*
|
||||
* A performance optimization for status.
|
||||
*
|
||||
* During a status scan, git looks in each directory for a .gitignore
|
||||
* file before scanning the directory. Since .gitignore files are not
|
||||
* that common, we can waste a lot of time looking for files that are
|
||||
* not there. Fortunately, the fscache already knows if the directory
|
||||
* contains a .gitignore file, since it has already read the directory
|
||||
* and it already has the stat-data.
|
||||
*
|
||||
* If the fscache is enabled, use the fscache-lstat() interlude to see
|
||||
* if the file exists (in the fscache hash maps) before trying to open()
|
||||
* it.
|
||||
*
|
||||
* This causes problem when the .gitignore file is a symlink, because
|
||||
* we call lstat() rather than stat() on the symlnk and the resulting
|
||||
* stat-data is for the symlink itself rather than the target file.
|
||||
* We CANNOT use stat() here because the fscache DOES NOT install an
|
||||
* interlude for stat() and mingw_stat() always calls "open-fstat-close"
|
||||
* on the file and defeats the purpose of the optimization here. Since
|
||||
* symlinks are even more rare than .gitignore files, we force a fstat()
|
||||
* after our open() to get stat-data for the target file.
|
||||
*
|
||||
* Since `clang`'s `-Wunreachable-code` mode is clever, it would figure
|
||||
* out that on non-Windows platforms, this `lstat()` is unreachable.
|
||||
* We do want to keep the conditional block for the sake of Windows,
|
||||
* though, so let's use the `NOT_CONSTANT()` trick to suppress that error.
|
||||
*/
|
||||
if (NOT_CONSTANT(is_fscache_enabled(fname))) {
|
||||
if (lstat(fname, &st) < 0) {
|
||||
fd = -1;
|
||||
} else {
|
||||
fd = open(fname, O_RDONLY);
|
||||
if (fd < 0)
|
||||
warn_on_fopen_errors(fname);
|
||||
else if (S_ISLNK(st.st_mode) && fstat(fd, &st) < 0) {
|
||||
warn_on_fopen_errors(fname);
|
||||
close(fd);
|
||||
fd = -1;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (flags & PATTERN_NOFOLLOW)
|
||||
fd = open_nofollow(fname, O_RDONLY);
|
||||
else
|
||||
close(fd);
|
||||
fd = open(fname, O_RDONLY);
|
||||
|
||||
if (fd < 0 || fstat(fd, &st) < 0) {
|
||||
if (fd < 0)
|
||||
warn_on_fopen_errors(fname);
|
||||
else {
|
||||
close(fd);
|
||||
fd = -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (fd < 0) {
|
||||
if (!istate)
|
||||
return -1;
|
||||
r = read_skip_worktree_file_from_index(istate, fname,
|
||||
|
||||
3
entry.c
3
entry.c
@ -411,6 +411,9 @@ static int write_entry(struct cache_entry *ce, char *path, struct conv_attrs *ca
|
||||
}
|
||||
|
||||
finish:
|
||||
/* Flush cached lstat in fscache after writing to disk. */
|
||||
flush_fscache();
|
||||
|
||||
if (state->refresh_cache) {
|
||||
if (!fstat_done && lstat(ce->name, &st) < 0)
|
||||
return error_errno("unable to stat just-written file %s",
|
||||
|
||||
@ -760,6 +760,7 @@ static void mark_complete_and_common_ref(struct fetch_negotiator *negotiator,
|
||||
save_commit_buffer = 0;
|
||||
|
||||
trace2_region_enter("fetch-pack", "parse_remote_refs_and_find_cutoff", NULL);
|
||||
enable_fscache(0);
|
||||
for (ref = *refs; ref; ref = ref->next) {
|
||||
struct commit *commit;
|
||||
|
||||
@ -784,6 +785,7 @@ static void mark_complete_and_common_ref(struct fetch_negotiator *negotiator,
|
||||
if (!cutoff || cutoff < commit->date)
|
||||
cutoff = commit->date;
|
||||
}
|
||||
disable_fscache();
|
||||
trace2_region_leave("fetch-pack", "parse_remote_refs_and_find_cutoff", NULL);
|
||||
|
||||
/*
|
||||
|
||||
@ -162,9 +162,11 @@ static inline int is_xplatform_dir_sep(int c)
|
||||
/* pull in Windows compatibility stuff */
|
||||
#include "compat/win32/path-utils.h"
|
||||
#include "compat/mingw.h"
|
||||
#include "compat/win32/fscache.h"
|
||||
#elif defined(_MSC_VER)
|
||||
#include "compat/win32/path-utils.h"
|
||||
#include "compat/msvc.h"
|
||||
#include "compat/win32/fscache.h"
|
||||
#endif
|
||||
|
||||
/* used on Mac OS X */
|
||||
@ -1050,6 +1052,45 @@ static inline int is_missing_file_error(int errno_)
|
||||
return (errno_ == ENOENT || errno_ == ENOTDIR);
|
||||
}
|
||||
|
||||
/*
|
||||
* Enable/disable a read-only cache for file system data on platforms that
|
||||
* support it.
|
||||
*
|
||||
* Implementing a live-cache is complicated and requires special platform
|
||||
* support (inotify, ReadDirectoryChangesW...). enable_fscache shall be used
|
||||
* to mark sections of git code that extensively read from the file system
|
||||
* without modifying anything. Implementations can use this to cache e.g. stat
|
||||
* data or even file content without the need to synchronize with the file
|
||||
* system.
|
||||
*/
|
||||
|
||||
/* opaque fscache structure */
|
||||
struct fscache;
|
||||
|
||||
#ifndef enable_fscache
|
||||
#define enable_fscache(x) /* noop */
|
||||
#endif
|
||||
|
||||
#ifndef disable_fscache
|
||||
#define disable_fscache() /* noop */
|
||||
#endif
|
||||
|
||||
#ifndef is_fscache_enabled
|
||||
#define is_fscache_enabled(path) (0)
|
||||
#endif
|
||||
|
||||
#ifndef flush_fscache
|
||||
#define flush_fscache() /* noop */
|
||||
#endif
|
||||
|
||||
#ifndef getcache_fscache
|
||||
#define getcache_fscache() (NULL) /* noop */
|
||||
#endif
|
||||
|
||||
#ifndef merge_fscache
|
||||
#define merge_fscache(dest) /* noop */
|
||||
#endif
|
||||
|
||||
int cmd_main(int, const char **);
|
||||
|
||||
/*
|
||||
|
||||
10
mem-pool.c
10
mem-pool.c
@ -7,7 +7,9 @@
|
||||
#include "git-compat-util.h"
|
||||
#include "mem-pool.h"
|
||||
#include "gettext.h"
|
||||
#include "trace.h"
|
||||
|
||||
static struct trace_key trace_mem_pool = TRACE_KEY_INIT(MEMPOOL);
|
||||
#define BLOCK_GROWTH_SIZE (1024 * 1024 - sizeof(struct mp_block))
|
||||
|
||||
/*
|
||||
@ -65,12 +67,20 @@ void mem_pool_init(struct mem_pool *pool, size_t initial_size)
|
||||
|
||||
if (initial_size > 0)
|
||||
mem_pool_alloc_block(pool, initial_size, NULL);
|
||||
|
||||
trace_printf_key(&trace_mem_pool,
|
||||
"mem_pool (%p): init (%"PRIuMAX") initial size\n",
|
||||
(void *)pool, (uintmax_t)initial_size);
|
||||
}
|
||||
|
||||
void mem_pool_discard(struct mem_pool *pool, int invalidate_memory)
|
||||
{
|
||||
struct mp_block *block, *block_to_free;
|
||||
|
||||
trace_printf_key(&trace_mem_pool,
|
||||
"mem_pool (%p): discard (%"PRIuMAX") unused\n",
|
||||
(void *)pool,
|
||||
(uintmax_t)(pool->mp_block->end - pool->mp_block->next_free));
|
||||
block = pool->mp_block;
|
||||
while (block)
|
||||
{
|
||||
|
||||
@ -1260,6 +1260,7 @@ elif host_machine.system() == 'windows'
|
||||
'compat/winansi.c',
|
||||
'compat/win32/dirent.c',
|
||||
'compat/win32/flush.c',
|
||||
'compat/win32/fscache.c',
|
||||
'compat/win32/path-utils.c',
|
||||
'compat/win32/pthread.c',
|
||||
'compat/win32/syslog.c',
|
||||
|
||||
@ -640,6 +640,7 @@ static void write_items_sequentially(struct checkout *state)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
flush_fscache();
|
||||
for (i = 0; i < parallel_checkout.nr; i++) {
|
||||
struct parallel_checkout_item *pc_item = ¶llel_checkout.items[i];
|
||||
write_pc_item(pc_item, state);
|
||||
|
||||
@ -20,6 +20,8 @@
|
||||
#include "trace2.h"
|
||||
#include "config.h"
|
||||
|
||||
static struct fscache *fscache;
|
||||
|
||||
/*
|
||||
* Mostly randomly chosen maximum thread counts: we
|
||||
* cap the parallelism to 20 threads, and we want
|
||||
@ -57,6 +59,7 @@ static void *preload_thread(void *_data)
|
||||
nr = index->cache_nr - p->offset;
|
||||
last_nr = nr;
|
||||
|
||||
enable_fscache(nr);
|
||||
do {
|
||||
struct cache_entry *ce = *cep++;
|
||||
struct stat st;
|
||||
@ -100,6 +103,7 @@ static void *preload_thread(void *_data)
|
||||
pthread_mutex_unlock(&pd->mutex);
|
||||
}
|
||||
cache_def_clear(&cache);
|
||||
merge_fscache(fscache);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -118,6 +122,7 @@ void preload_index(struct index_state *index,
|
||||
if (!HAVE_THREADS || !core_preload_index)
|
||||
return;
|
||||
|
||||
fscache = getcache_fscache();
|
||||
threads = index->cache_nr / THREAD_COST;
|
||||
if ((index->cache_nr > 1) && (threads < 2) && git_env_bool("GIT_TEST_PRELOAD_INDEX", 0))
|
||||
threads = 2;
|
||||
|
||||
@ -1512,6 +1512,7 @@ int refresh_index(struct index_state *istate, unsigned int flags,
|
||||
typechange_fmt = in_porcelain ? "T\t%s\n" : "%s: needs update\n";
|
||||
added_fmt = in_porcelain ? "A\t%s\n" : "%s: needs update\n";
|
||||
unmerged_fmt = in_porcelain ? "U\t%s\n" : "%s: needs merge\n";
|
||||
enable_fscache(0);
|
||||
/*
|
||||
* Use the multi-threaded preload_index() to refresh most of the
|
||||
* cache entries quickly then in the single threaded loop below,
|
||||
@ -1606,6 +1607,7 @@ int refresh_index(struct index_state *istate, unsigned int flags,
|
||||
display_progress(progress, istate->cache_nr);
|
||||
stop_progress(&progress);
|
||||
trace_performance_leave("refresh index");
|
||||
disable_fscache();
|
||||
return has_errors;
|
||||
}
|
||||
|
||||
|
||||
3
t/README
3
t/README
@ -479,6 +479,9 @@ GIT_TEST_NAME_HASH_VERSION=<int>, when set, causes 'git pack-objects' to
|
||||
assume '--name-hash-version=<n>'.
|
||||
|
||||
|
||||
GIT_TEST_FSCACHE=<boolean> exercises the uncommon fscache code path
|
||||
which adds a cache below mingw's lstat and dirent implementations.
|
||||
|
||||
Naming Tests
|
||||
------------
|
||||
|
||||
|
||||
@ -270,6 +270,7 @@ integration_tests = [
|
||||
't2026-checkout-pathspec-file.sh',
|
||||
't2027-checkout-track.sh',
|
||||
't2030-unresolve-info.sh',
|
||||
't2031-checkout-long-paths.sh',
|
||||
't2050-git-dir-relative.sh',
|
||||
't2060-switch.sh',
|
||||
't2070-restore.sh',
|
||||
@ -888,6 +889,7 @@ integration_tests = [
|
||||
't7422-submodule-output.sh',
|
||||
't7423-submodule-symlinks.sh',
|
||||
't7424-submodule-mixed-ref-formats.sh',
|
||||
't7429-submodule-long-path.sh',
|
||||
't7450-bad-git-dotfiles.sh',
|
||||
't7500-commit-template-squash-signoff.sh',
|
||||
't7501-commit-basic-functionality.sh',
|
||||
|
||||
@ -106,4 +106,24 @@ test_expect_success 'in partial clone, sparse checkout only fetches needed blobs
|
||||
test_cmp expect actual
|
||||
'
|
||||
|
||||
test_expect_success MINGW 'no unnecessary opendir() with fscache' '
|
||||
git clone . fscache-test &&
|
||||
(
|
||||
cd fscache-test &&
|
||||
git config core.fscache 1 &&
|
||||
echo "/excluded/*" >.git/info/sparse-checkout &&
|
||||
for f in $(test_seq 10)
|
||||
do
|
||||
sha1=$(echo $f | git hash-object -w --stdin) &&
|
||||
git update-index --add \
|
||||
--cacheinfo 100644,$sha1,excluded/$f || exit 1
|
||||
done &&
|
||||
test_tick &&
|
||||
git commit -m excluded &&
|
||||
GIT_TRACE_FSCACHE=1 git status >out 2>err &&
|
||||
grep excluded err >grep.out &&
|
||||
test_line_count = 1 grep.out
|
||||
)
|
||||
'
|
||||
|
||||
test_done
|
||||
|
||||
111
t/t2031-checkout-long-paths.sh
Executable file
111
t/t2031-checkout-long-paths.sh
Executable file
@ -0,0 +1,111 @@
|
||||
#!/bin/sh
|
||||
|
||||
test_description='checkout long paths on Windows
|
||||
|
||||
Ensures that Git for Windows can deal with long paths (>260) enabled via core.longpaths'
|
||||
|
||||
. ./test-lib.sh
|
||||
|
||||
if test_have_prereq !MINGW
|
||||
then
|
||||
skip_all='skipping MINGW specific long paths test'
|
||||
test_done
|
||||
fi
|
||||
|
||||
test_expect_success setup '
|
||||
p=longpathxx && # -> 10
|
||||
p=$p$p$p$p$p && # -> 50
|
||||
p=$p$p$p$p$p && # -> 250
|
||||
|
||||
path=${p}/longtestfile && # -> 263 (MAX_PATH = 260)
|
||||
|
||||
blob=$(echo foobar | git hash-object -w --stdin) &&
|
||||
|
||||
printf "100644 %s 0\t%s\n" "$blob" "$path" |
|
||||
git update-index --add --index-info &&
|
||||
git commit -m initial -q
|
||||
'
|
||||
|
||||
test_expect_success 'checkout of long paths without core.longpaths fails' '
|
||||
git config core.longpaths false &&
|
||||
test_must_fail git checkout -f 2>error &&
|
||||
grep -q "Filename too long" error &&
|
||||
test ! -d longpa*
|
||||
'
|
||||
|
||||
test_expect_success 'checkout of long paths with core.longpaths works' '
|
||||
git config core.longpaths true &&
|
||||
git checkout -f &&
|
||||
test_path_is_file longpa*/longtestfile
|
||||
'
|
||||
|
||||
test_expect_success 'update of long paths' '
|
||||
echo frotz >>$(ls longpa*/longtestfile) &&
|
||||
echo $path > expect &&
|
||||
git ls-files -m > actual &&
|
||||
test_cmp expect actual &&
|
||||
git add $path &&
|
||||
git commit -m second &&
|
||||
git grep "frotz" HEAD -- $path
|
||||
'
|
||||
|
||||
test_expect_success cleanup '
|
||||
# bash cannot delete the trash dir if it contains a long path
|
||||
# lets help cleaning up (unless in debug mode)
|
||||
if test -z "$debug"
|
||||
then
|
||||
rm -rf longpa~1
|
||||
fi
|
||||
'
|
||||
|
||||
# check that the template used in the test won't be too long:
|
||||
abspath="$(pwd)"/testdir
|
||||
test ${#abspath} -gt 230 ||
|
||||
test_set_prereq SHORTABSPATH
|
||||
|
||||
test_expect_success SHORTABSPATH 'clean up path close to MAX_PATH' '
|
||||
p=/123456789abcdef/123456789abcdef/123456789abcdef/123456789abc/ef &&
|
||||
p=y$p$p$p$p &&
|
||||
subdir="x$(echo "$p" | tail -c $((253 - ${#abspath})) - )" &&
|
||||
# Now, $abspath/$subdir has exactly 254 characters, and is inside CWD
|
||||
p2="$abspath/$subdir" &&
|
||||
test 254 = ${#p2} &&
|
||||
|
||||
# Be careful to overcome path limitations of the MSys tools and split
|
||||
# the $subdir into two parts. ($subdir2 has to contain 16 chars and a
|
||||
# slash somewhere following; that is why we asked for abspath <= 230 and
|
||||
# why we placed a slash near the end of the $subdir template.)
|
||||
subdir2=${subdir#????????????????*/} &&
|
||||
subdir1=testdir/${subdir%/$subdir2} &&
|
||||
mkdir -p "$subdir1" &&
|
||||
i=0 &&
|
||||
# The most important case is when absolute path is 258 characters long,
|
||||
# and that will be when i == 4.
|
||||
while test $i -le 7
|
||||
do
|
||||
mkdir -p $subdir2 &&
|
||||
touch $subdir2/one-file &&
|
||||
mv ${subdir2%%/*} "$subdir1/" &&
|
||||
subdir2=z${subdir2} &&
|
||||
i=$(($i+1)) ||
|
||||
exit 1
|
||||
done &&
|
||||
|
||||
# now check that git is able to clear the tree:
|
||||
(cd testdir &&
|
||||
git init &&
|
||||
git config core.longpaths yes &&
|
||||
git clean -fdx) &&
|
||||
test ! -d "$subdir1"
|
||||
'
|
||||
|
||||
test_expect_success SYMLINKS_WINDOWS 'leave drive-less, short paths intact' '
|
||||
printf "/Program Files" >symlink-target &&
|
||||
symlink_target_oid="$(git hash-object -w --stdin <symlink-target)" &&
|
||||
git update-index --add --cacheinfo 120000,$symlink_target_oid,PF &&
|
||||
git -c core.symlinks=true checkout -- PF &&
|
||||
cmd //c dir >actual &&
|
||||
grep "<SYMLINKD\\?> *PF *\\[\\\\Program Files\\]" actual
|
||||
'
|
||||
|
||||
test_done
|
||||
@ -35,6 +35,42 @@ fill () {
|
||||
}
|
||||
|
||||
|
||||
test_expect_success MINGW 'fscache flush cache' '
|
||||
|
||||
git init fscache-test &&
|
||||
cd fscache-test &&
|
||||
git config core.fscache 1 &&
|
||||
echo A > test.txt &&
|
||||
git add test.txt &&
|
||||
git commit -m A &&
|
||||
echo B >> test.txt &&
|
||||
git checkout . &&
|
||||
test -z "$(git status -s)" &&
|
||||
echo A > expect.txt &&
|
||||
test_cmp expect.txt test.txt &&
|
||||
cd .. &&
|
||||
rm -rf fscache-test
|
||||
'
|
||||
|
||||
test_expect_success MINGW 'fscache flush cache dir' '
|
||||
|
||||
git init fscache-test &&
|
||||
cd fscache-test &&
|
||||
git config core.fscache 1 &&
|
||||
echo A > test.txt &&
|
||||
git add test.txt &&
|
||||
git commit -m A &&
|
||||
rm test.txt &&
|
||||
mkdir test.txt &&
|
||||
touch test.txt/test.txt &&
|
||||
git checkout . &&
|
||||
test -z "$(git status -s)" &&
|
||||
echo A > expect.txt &&
|
||||
test_cmp expect.txt test.txt &&
|
||||
cd .. &&
|
||||
rm -rf fscache-test
|
||||
'
|
||||
|
||||
test_expect_success setup '
|
||||
fill x y z >same &&
|
||||
fill 1 2 3 4 5 6 7 8 >one &&
|
||||
|
||||
110
t/t7429-submodule-long-path.sh
Executable file
110
t/t7429-submodule-long-path.sh
Executable file
@ -0,0 +1,110 @@
|
||||
#!/bin/sh
|
||||
#
|
||||
# Copyright (c) 2013 Doug Kelly
|
||||
#
|
||||
|
||||
test_description='Test submodules with a path near PATH_MAX
|
||||
|
||||
This test verifies that "git submodule" initialization, update and clones work, including with recursive submodules and paths approaching PATH_MAX (260 characters on Windows)
|
||||
'
|
||||
|
||||
TEST_NO_CREATE_REPO=1
|
||||
. ./test-lib.sh
|
||||
|
||||
# cloning a submodule calls is_git_directory("$path/../.git/modules/$path"),
|
||||
# which effectively limits the maximum length to PATH_MAX / 2 minus some
|
||||
# overhead; start with 3 * 36 = 108 chars (test 2 fails if >= 110)
|
||||
longpath36=0123456789abcdefghijklmnopqrstuvwxyz
|
||||
longpath180=$longpath36$longpath36$longpath36$longpath36$longpath36
|
||||
|
||||
# the git database must fit within PATH_MAX, which limits the submodule name
|
||||
# to PATH_MAX - len(pwd) - ~90 (= len("/objects//") + 40-byte sha1 + some
|
||||
# overhead from the test case)
|
||||
pwd=$(pwd)
|
||||
pwdlen=$(echo "$pwd" | wc -c)
|
||||
longpath=$(echo $longpath180 | cut -c 1-$((170-$pwdlen)))
|
||||
|
||||
test_expect_success 'submodule with a long path' '
|
||||
git config --global protocol.file.allow always &&
|
||||
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= \
|
||||
git -c init.defaultBranch=long init --bare remote &&
|
||||
test_create_repo bundle1 &&
|
||||
(
|
||||
cd bundle1 &&
|
||||
test_commit "shoot" &&
|
||||
git rev-parse --verify HEAD >../expect
|
||||
) &&
|
||||
mkdir home &&
|
||||
(
|
||||
cd home &&
|
||||
git clone ../remote test &&
|
||||
cd test &&
|
||||
git checkout -B long &&
|
||||
git submodule add ../bundle1 $longpath &&
|
||||
test_commit "sogood" &&
|
||||
(
|
||||
cd $longpath &&
|
||||
git rev-parse --verify HEAD >actual &&
|
||||
test_cmp ../../../expect actual
|
||||
) &&
|
||||
git push origin long
|
||||
) &&
|
||||
mkdir home2 &&
|
||||
(
|
||||
cd home2 &&
|
||||
git clone ../remote test &&
|
||||
cd test &&
|
||||
git checkout long &&
|
||||
git submodule update --init &&
|
||||
(
|
||||
cd $longpath &&
|
||||
git rev-parse --verify HEAD >actual &&
|
||||
test_cmp ../../../expect actual
|
||||
)
|
||||
)
|
||||
'
|
||||
|
||||
test_expect_success 'recursive submodule with a long path' '
|
||||
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= \
|
||||
git -c init.defaultBranch=long init --bare super &&
|
||||
test_create_repo child &&
|
||||
(
|
||||
cd child &&
|
||||
test_commit "shoot" &&
|
||||
git rev-parse --verify HEAD >../expect
|
||||
) &&
|
||||
test_create_repo parent &&
|
||||
(
|
||||
cd parent &&
|
||||
git submodule add ../child $longpath &&
|
||||
test_commit "aim"
|
||||
) &&
|
||||
mkdir home3 &&
|
||||
(
|
||||
cd home3 &&
|
||||
git clone ../super test &&
|
||||
cd test &&
|
||||
git checkout -B long &&
|
||||
git submodule add ../parent foo &&
|
||||
git submodule update --init --recursive &&
|
||||
test_commit "sogood" &&
|
||||
(
|
||||
cd foo/$longpath &&
|
||||
git rev-parse --verify HEAD >actual &&
|
||||
test_cmp ../../../../expect actual
|
||||
) &&
|
||||
git push origin long
|
||||
) &&
|
||||
mkdir home4 &&
|
||||
(
|
||||
cd home4 &&
|
||||
git clone ../super test --recursive &&
|
||||
(
|
||||
cd test/foo/$longpath &&
|
||||
git rev-parse --verify HEAD >actual &&
|
||||
test_cmp ../../../../expect actual
|
||||
)
|
||||
)
|
||||
'
|
||||
|
||||
test_done
|
||||
@ -1823,7 +1823,9 @@ static void mark_new_skip_worktree(struct pattern_list *pl,
|
||||
* 2. Widen worktree according to sparse-checkout file.
|
||||
* Matched entries will have skip_wt_flag cleared (i.e. "in")
|
||||
*/
|
||||
enable_fscache(istate->cache_nr);
|
||||
clear_ce_flags(istate, select_flag, skip_wt_flag, pl, show_progress);
|
||||
disable_fscache();
|
||||
}
|
||||
|
||||
static void populate_from_existing_patterns(struct unpack_trees_options *o,
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user