tcrt/src/stat.cpp

   1 /*=============================================================================
   2         stat.h :
   3
   4         Copyright © 2008 Bruno Santos <nayart3@gmail.com>
   5 =============================================================================*/
   6
   7 #include <sys/stat.h>
   8 #include <unistd.h>
   9 #include <fcntl.h>
  10 #include <errno.h>
  11 #include "utils.h"
  12
  13 ////////////////////////////////////////////////////////////////////////////////
  14 static inline int file_attr_to_st_mode(DWORD attr)
  15 {
  16         int mode = S_IRUSR;
  17
  18         if (attr & FILE_ATTRIBUTE_DIRECTORY)
  19                 mode |= S_IFDIR;
  20         else if (attr & FILE_ATTRIBUTE_REPARSE_POINT)
  21                 mode |= S_IFLNK;
  22         else
  23                 mode |= S_IFREG;
  24
  25         if (!(attr & FILE_ATTRIBUTE_READONLY))
  26                 mode |= S_IWUSR;
  27
  28         return mode;
  29 }
  30
  31 int chmod(const char* path, mode_t mode)
  32 {
  33         tcrt::buffer<wchar_t> wpath;
  34         size_t len;
  35         DWORD attr;
  36
  37         len = strlen(path) + 1;
  38         if (!wpath.resize(len * sizeof(WCHAR)))
  39                 return -1;
  40
  41         tcrt_utf8_to_utf16(path, len, wpath.get(), len);
  42         attr = GetFileAttributesW(wpath.get());
  43         if (attr == INVALID_FILE_ATTRIBUTES) {
  44                 tcrt_set_errno_win32();
  45                 return -1;
  46         }
  47         if (mode & S_IWUSR)
  48                 attr &= ~FILE_ATTRIBUTE_READONLY;
  49         else
  50                 attr |= FILE_ATTRIBUTE_READONLY;
  51         if (!SetFileAttributesW(wpath.get(), attr)) {
  52                 tcrt_set_errno_win32();
  53                 return -1;
  54         }
  55         return 0;
  56 }
  57
  58 int fchmod(int fildes, mode_t mode)
  59 {
  60         FILE_BASIC_INFO binfo;
  61         FILETIME ctime;
  62         HANDLE handle;
  63
  64         handle = tcrt::fildes_to_handle(fildes);
  65         if (!GetFileInformationByHandleEx(handle, FileBasicInfo, &binfo, sizeof(binfo))) {
  66                 tcrt_set_errno_win32();
  67                 return -1;
  68         }
  69         if (mode & S_IWUSR)
  70                 binfo.FileAttributes &= ~FILE_ATTRIBUTE_READONLY;
  71         else
  72                 binfo.FileAttributes |= FILE_ATTRIBUTE_READONLY;
  73         GetSystemTimeAsFileTime(&ctime);
  74         binfo.ChangeTime.LowPart = ctime.dwLowDateTime;
  75         binfo.ChangeTime.HighPart = ctime.dwHighDateTime;
  76         if (!SetFileInformationByHandle(handle, FileBasicInfo, &binfo, sizeof(binfo))) {
  77                 tcrt_set_errno_win32();
  78                 return -1;
  79         }
  80         return 0;
  81 }
  82
  83 int fstat(int fildes, struct stat *buf)
  84 {
  85         BY_HANDLE_FILE_INFORMATION info;
  86         HANDLE handle;
  87
  88         handle = tcrt::fildes_to_handle(fildes);
  89         if (GetFileInformationByHandle(handle, &info)) {
  90                 LARGE_INTEGER size;
  91
  92                 size.LowPart = info.nFileSizeLow;
  93                 size.HighPart = info.nFileSizeHigh;
  94                 buf->st_ino = 0;
  95                 buf->st_gid = 0;
  96                 buf->st_uid = 0; //getuid();
  97                 buf->st_mode = file_attr_to_st_mode(info.dwFileAttributes);
  98                 buf->st_size = size.QuadPart;
  99                 buf->st_dev = 0;
 100                 buf->st_atime = filetime_to_time_t(&info.ftLastAccessTime);
 101                 buf->st_mtime = filetime_to_time_t(&info.ftLastWriteTime);
 102                 buf->st_ctime = filetime_to_time_t(&info.ftCreationTime);
 103                 buf->st_blksize = 4096;
 104                 buf->st_blocks = ((buf->st_size + 4095) / 4096);
 105                 return 0;
 106
 107         } else if (fildes < 3 && handle != INVALID_HANDLE_VALUE) {
 108                 memset(buf, 0, sizeof(*buf));
 109                 return 0;
 110         }
 111         tcrt_set_errno_win32();
 112         return -1;
 113 }
 114
 115 int mkdir(const char* path, mode_t mode)
 116 {
 117         tcrt::buffer<wchar_t> wpath;
 118         size_t len;
 119
 120         len = strlen(path) + 1;
 121         if (!wpath.resize(len * sizeof(wchar_t)))
 122                 return -1;
 123         tcrt_utf8_to_utf16(path, len, wpath.get(), len);
 124         if (!CreateDirectoryW(wpath.get(), NULL)) {
 125                 tcrt_set_errno_win32();
 126                 return -1;
 127         }
 128         return 0;
 129 }
 130
 131 int lstat(const char *path, struct stat *buf)
 132 {
 133         //
 134         // FIXME
 135         //
 136         return stat(path, buf);
 137 }
 138
 139 int stat(const char *path, struct stat *buf)
 140 {
 141         int fd;
 142         int res;
 143
 144         fd = open(path, O_RDONLY);
 145         if (fd < 0)
 146                 return fd;
 147         res = fstat(fd, buf);
 148         close(fd);
 149         return res;
 150 }
 151
 152 mode_t umask(mode_t mode)
 153 {
 154         __debugbreak();
 155         errno = ENOSYS;
 156         return -1;
 157 }
 158
 159 // EOF ////////////////////////////////////////////////////////////////////////