-#define CYGWIN_C
-#define WIN32_LEAN_AND_MEAN
-#include <sys/stat.h>
-#include <sys/errno.h>
-#include "win32.h"
#include "../git-compat-util.h"
-#include "../cache.h" /* to read configuration */
+#include "../cache.h"
-/*
- * Return POSIX permission bits, regardless of core.ignorecygwinfstricks
- */
-int cygwin_get_st_mode_bits(const char *path, int *mode)
+int cygwin_offset_1st_component(const char *path)
{
- struct stat st;
- if (lstat(path, &st) < 0)
- return -1;
- *mode = st.st_mode;
- return 0;
-}
-
-static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts)
-{
- long long winTime = ((long long)ft->dwHighDateTime << 32) +
- ft->dwLowDateTime;
- winTime -= 116444736000000000LL; /* Windows to Unix Epoch conversion */
- /* convert 100-nsecond interval to seconds and nanoseconds */
- ts->tv_sec = (time_t)(winTime/10000000);
- ts->tv_nsec = (long)(winTime - ts->tv_sec*10000000LL) * 100;
-}
-
-#define size_to_blocks(s) (((s)+511)/512)
-
-/* do_stat is a common implementation for cygwin_lstat and cygwin_stat.
- *
- * To simplify its logic, in the case of cygwin symlinks, this implementation
- * falls back to the cygwin version of stat/lstat, which is provided as the
- * last argument.
- */
-static int do_stat(const char *file_name, struct stat *buf, stat_fn_t cygstat)
-{
- WIN32_FILE_ATTRIBUTE_DATA fdata;
-
- if (file_name[0] == '/')
- return cygstat (file_name, buf);
-
- if (!(errno = get_file_attr(file_name, &fdata))) {
- /*
- * If the system attribute is set and it is not a directory then
- * it could be a symbol link created in the nowinsymlinks mode.
- * Normally, Cygwin works in the winsymlinks mode, so this situation
- * is very unlikely. For the sake of simplicity of our code, let's
- * Cygwin to handle it.
- */
- if ((fdata.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM) &&
- !(fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
- return cygstat(file_name, buf);
-
- /* fill out the stat structure */
- buf->st_dev = buf->st_rdev = 0; /* not used by Git */
- buf->st_ino = 0;
- buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
- buf->st_nlink = 1;
- buf->st_uid = buf->st_gid = 0;
-#ifdef __CYGWIN_USE_BIG_TYPES__
- buf->st_size = ((_off64_t)fdata.nFileSizeHigh << 32) +
- fdata.nFileSizeLow;
-#else
- buf->st_size = (off_t)fdata.nFileSizeLow;
-#endif
- buf->st_blocks = size_to_blocks(buf->st_size);
- filetime_to_timespec(&fdata.ftLastAccessTime, &buf->st_atim);
- filetime_to_timespec(&fdata.ftLastWriteTime, &buf->st_mtim);
- filetime_to_timespec(&fdata.ftCreationTime, &buf->st_ctim);
- return 0;
- } else if (errno == ENOENT) {
- /*
- * In the winsymlinks mode (which is the default), Cygwin
- * emulates symbol links using Windows shortcut files. These
- * files are formed by adding .lnk extension. So, if we have
- * not found the specified file name, it could be that it is
- * a symbol link. Let's Cygwin to deal with that.
- */
- return cygstat(file_name, buf);
- }
- return -1;
-}
-
-/* We provide our own lstat/stat functions, since the provided Cygwin versions
- * of these functions are too slow. These stat functions are tailored for Git's
- * usage, and therefore they are not meant to be complete and correct emulation
- * of lstat/stat functionality.
- */
-static int cygwin_lstat(const char *path, struct stat *buf)
-{
- return do_stat(path, buf, lstat);
-}
-
-static int cygwin_stat(const char *path, struct stat *buf)
-{
- return do_stat(path, buf, stat);
-}
-
-
-/*
- * At start up, we are trying to determine whether Win32 API or cygwin stat
- * functions should be used. The choice is determined by core.ignorecygwinfstricks.
- * Reading this option is not always possible immediately as git_dir may
- * not be set yet. So until it is set, use cygwin lstat/stat functions.
- * However, if core.filemode is set, we must use the Cygwin posix
- * stat/lstat as the Windows stat functions do not determine posix filemode.
- *
- * Note that git_cygwin_config() does NOT call git_default_config() and this
- * is deliberate. Many commands read from config to establish initial
- * values in variables and later tweak them from elsewhere (e.g. command line).
- * init_stat() is called lazily on demand, typically much late in the program,
- * and calling git_default_config() from here would break such variables.
- */
-static int native_stat = 1;
-static int core_filemode = 1; /* matches trust_executable_bit default */
+ const char *pos = path;
+ /* unc paths */
+ if (is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
+ /* skip server name */
+ pos = strchr(pos + 2, '/');
+ if (!pos)
+ return 0; /* Error: malformed unc path */
-static int git_cygwin_config(const char *var, const char *value, void *cb)
-{
- if (!strcmp(var, "core.ignorecygwinfstricks"))
- native_stat = git_config_bool(var, value);
- else if (!strcmp(var, "core.filemode"))
- core_filemode = git_config_bool(var, value);
- return 0;
-}
-
-static int init_stat(void)
-{
- if (have_git_dir() && git_config(git_cygwin_config,NULL)) {
- if (!core_filemode && native_stat) {
- cygwin_stat_fn = cygwin_stat;
- cygwin_lstat_fn = cygwin_lstat;
- } else {
- cygwin_stat_fn = stat;
- cygwin_lstat_fn = lstat;
- }
- return 0;
+ do {
+ pos++;
+ } while (*pos && pos[0] != '/');
}
- return 1;
+ return pos + is_dir_sep(*pos) - path;
}
-
-static int cygwin_stat_stub(const char *file_name, struct stat *buf)
-{
- return (init_stat() ? stat : *cygwin_stat_fn)(file_name, buf);
-}
-
-static int cygwin_lstat_stub(const char *file_name, struct stat *buf)
-{
- return (init_stat() ? lstat : *cygwin_lstat_fn)(file_name, buf);
-}
-
-stat_fn_t cygwin_stat_fn = cygwin_stat_stub;
-stat_fn_t cygwin_lstat_fn = cygwin_lstat_stub;
-