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win32.c: fchmod

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* win32/win32.c (fchmod): implement by using
  SetFileInformationByHandle.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51704 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-08-27 04:01:37 +00:00
parent a2da0f7e42
commit 262b10210f
3 changed files with 53 additions and 4 deletions
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14
file.c
View file

@ -2357,7 +2357,7 @@ rb_file_chmod(VALUE obj, VALUE vmode)
{
rb_io_t *fptr;
int mode;
#ifndef HAVE_FCHMOD
#if !defined HAVE_FCHMOD || !HAVE_FCHMOD
VALUE path;
#endif
@ -2365,9 +2365,15 @@ rb_file_chmod(VALUE obj, VALUE vmode)
GetOpenFile(obj, fptr);
#ifdef HAVE_FCHMOD
if (fchmod(fptr->fd, mode) == -1)
rb_sys_fail_path(fptr->pathv);
#else
if (fchmod(fptr->fd, mode) == -1) {
if (HAVE_FCHMOD || errno != ENOSYS)
rb_sys_fail_path(fptr->pathv);
}
else {
if (!HAVE_FCHMOD) return INT2FIX(0);
}
#endif
#if !defined HAVE_FCHMOD || !HAVE_FCHMOD
if (NIL_P(fptr->pathv)) return Qnil;
path = rb_str_encode_ospath(fptr->pathv);
if (chmod(RSTRING_PTR(path), mode) == -1)

2
win32/file.h
View file

@ -39,5 +39,7 @@ int rb_w32_read_reparse_point(const WCHAR *path, rb_w32_reparse_buffer_t *rp,
int lchown(const char *path, int owner, int group);
int rb_w32_ulchown(const char *path, int owner, int group);
int fchmod(int fd, int mode);
#define HAVE_FCHMOD 0
#endif /* RUBY_WIN32_FILE_H */

41
win32/win32.c
View file

@ -7313,6 +7313,47 @@ rb_w32_uchmod(const char *path, int mode)
return ret;
}
/* License: Ruby's */
int
fchmod(int fd, int mode)
{
typedef BOOL (WINAPI *set_file_information_by_handle_func)
(HANDLE, int, void*, DWORD);
static set_file_information_by_handle_func set_file_info =
(set_file_information_by_handle_func)-1;
/* from winbase.h of the mingw-w64 runtime package. */
struct {
LARGE_INTEGER CreationTime;
LARGE_INTEGER LastAccessTime;
LARGE_INTEGER LastWriteTime;
LARGE_INTEGER ChangeTime;
DWORD FileAttributes;
} info = {0, 0, 0}; /* fields with 0 are unchanged */
HANDLE h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
if (set_file_info == (set_file_information_by_handle_func)-1) {
set_file_info = (set_file_information_by_handle_func)
get_proc_address("kernel32", "SetFileInformationByHandle", NULL);
}
if (!set_file_info) {
errno = ENOSYS;
return -1;
}
info.FileAttributes = FILE_ATTRIBUTE_NORMAL;
if (!(mode & 0200)) info.FileAttributes |= FILE_ATTRIBUTE_READONLY;
if (!set_file_info(h, 0, &info, sizeof(info))) {
errno = map_errno(GetLastError());
return -1;
}
return 0;
}
/* License: Ruby's */
int
rb_w32_isatty(int fd)