Merge branch 'js/mingw-ns-filetime'
Windows port learned to use nano-second resolution file timestamps. * js/mingw-ns-filetime: mingw: implement nanosecond-precision file times mingw: replace MSVCRT's fstat() with a Win32-based implementation mingw: factor out code to set stat() data
This commit is contained in:
Junio C Hamano
commit
b9c3f062b6
@ -618,9 +618,11 @@ static inline long long filetime_to_hnsec(const FILETIME *ft)
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return winTime - 116444736000000000LL;
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}
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static inline time_t filetime_to_time_t(const FILETIME *ft)
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static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts)
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{
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return (time_t)(filetime_to_hnsec(ft) / 10000000);
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long long hnsec = filetime_to_hnsec(ft);
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ts->tv_sec = (time_t)(hnsec / 10000000);
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ts->tv_nsec = (hnsec % 10000000) * 100;
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}
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/**
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@ -679,9 +681,9 @@ static int do_lstat(int follow, const char *file_name, struct stat *buf)
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buf->st_size = fdata.nFileSizeLow |
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(((off_t)fdata.nFileSizeHigh)<<32);
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buf->st_dev = buf->st_rdev = 0; /* not used by Git */
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buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
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buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
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buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
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filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
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filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
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filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
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if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
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WIN32_FIND_DATAW findbuf;
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HANDLE handle = FindFirstFileW(wfilename, &findbuf);
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@ -762,6 +764,29 @@ static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
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return do_lstat(follow, alt_name, buf);
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}
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static int get_file_info_by_handle(HANDLE hnd, struct stat *buf)
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{
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BY_HANDLE_FILE_INFORMATION fdata;
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if (!GetFileInformationByHandle(hnd, &fdata)) {
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errno = err_win_to_posix(GetLastError());
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return -1;
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}
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buf->st_ino = 0;
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buf->st_gid = 0;
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buf->st_uid = 0;
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buf->st_nlink = 1;
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buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
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buf->st_size = fdata.nFileSizeLow |
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(((off_t)fdata.nFileSizeHigh)<<32);
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buf->st_dev = buf->st_rdev = 0; /* not used by Git */
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filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
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filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
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filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
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return 0;
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}
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int mingw_lstat(const char *file_name, struct stat *buf)
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{
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return do_stat_internal(0, file_name, buf);
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@ -774,32 +799,31 @@ int mingw_stat(const char *file_name, struct stat *buf)
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int mingw_fstat(int fd, struct stat *buf)
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{
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HANDLE fh = (HANDLE)_get_osfhandle(fd);
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BY_HANDLE_FILE_INFORMATION fdata;
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DWORD avail, type = GetFileType(fh) & ~FILE_TYPE_REMOTE;
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if (fh == INVALID_HANDLE_VALUE) {
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switch (type) {
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case FILE_TYPE_DISK:
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return get_file_info_by_handle(fh, buf);
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case FILE_TYPE_CHAR:
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case FILE_TYPE_PIPE:
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/* initialize stat fields */
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memset(buf, 0, sizeof(*buf));
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buf->st_nlink = 1;
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if (type == FILE_TYPE_CHAR) {
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buf->st_mode = _S_IFCHR;
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} else {
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buf->st_mode = _S_IFIFO;
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if (PeekNamedPipe(fh, NULL, 0, NULL, &avail, NULL))
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buf->st_size = avail;
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}
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return 0;
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default:
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errno = EBADF;
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return -1;
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}
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/* direct non-file handles to MS's fstat() */
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if (GetFileType(fh) != FILE_TYPE_DISK)
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return _fstati64(fd, buf);
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if (GetFileInformationByHandle(fh, &fdata)) {
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buf->st_ino = 0;
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buf->st_gid = 0;
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buf->st_uid = 0;
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buf->st_nlink = 1;
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buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
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buf->st_size = fdata.nFileSizeLow |
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(((off_t)fdata.nFileSizeHigh)<<32);
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buf->st_dev = buf->st_rdev = 0; /* not used by Git */
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buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
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buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
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buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
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return 0;
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}
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errno = EBADF;
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return -1;
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}
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static inline void time_t_to_filetime(time_t t, FILETIME *ft)
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@ -327,18 +327,41 @@ static inline int getrlimit(int resource, struct rlimit *rlp)
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}
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/*
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* Use mingw specific stat()/lstat()/fstat() implementations on Windows.
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* Use mingw specific stat()/lstat()/fstat() implementations on Windows,
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* including our own struct stat with 64 bit st_size and nanosecond-precision
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* file times.
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*/
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#ifndef __MINGW64_VERSION_MAJOR
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#define off_t off64_t
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#define lseek _lseeki64
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struct timespec {
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time_t tv_sec;
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long tv_nsec;
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};
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#endif
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/* use struct stat with 64 bit st_size */
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struct mingw_stat {
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_dev_t st_dev;
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_ino_t st_ino;
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_mode_t st_mode;
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short st_nlink;
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short st_uid;
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short st_gid;
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_dev_t st_rdev;
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off64_t st_size;
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struct timespec st_atim;
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struct timespec st_mtim;
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struct timespec st_ctim;
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};
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#define st_atime st_atim.tv_sec
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#define st_mtime st_mtim.tv_sec
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#define st_ctime st_ctim.tv_sec
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#ifdef stat
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#undef stat
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#endif
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#define stat _stati64
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#define stat mingw_stat
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int mingw_lstat(const char *file_name, struct stat *buf);
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int mingw_stat(const char *file_name, struct stat *buf);
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int mingw_fstat(int fd, struct stat *buf);
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@ -351,13 +374,6 @@ int mingw_fstat(int fd, struct stat *buf);
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#endif
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#define lstat mingw_lstat
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#ifndef _stati64
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# define _stati64(x,y) mingw_stat(x,y)
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#elif defined (_USE_32BIT_TIME_T)
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# define _stat32i64(x,y) mingw_stat(x,y)
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#else
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# define _stat64(x,y) mingw_stat(x,y)
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#endif
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int mingw_utime(const char *file_name, const struct utimbuf *times);
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#define utime mingw_utime
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@ -370,7 +370,6 @@ ifeq ($(uname_S),Windows)
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RUNTIME_PREFIX = YesPlease
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HAVE_WPGMPTR = YesWeDo
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NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease
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NO_NSEC = YesPlease
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USE_WIN32_MMAP = YesPlease
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MMAP_PREVENTS_DELETE = UnfortunatelyYes
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# USE_NED_ALLOCATOR = YesPlease
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@ -518,7 +517,6 @@ ifneq (,$(findstring MINGW,$(uname_S)))
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RUNTIME_PREFIX = YesPlease
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HAVE_WPGMPTR = YesWeDo
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NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease
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NO_NSEC = YesPlease
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USE_WIN32_MMAP = YesPlease
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MMAP_PREVENTS_DELETE = UnfortunatelyYes
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USE_NED_ALLOCATOR = YesPlease
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