static BOOL g_b_init_copy_sid;
static BOOL g_b_init_get_native_system_info;
static BOOL g_b_init_get_system_times;
-static BOOL g_b_init_create_symbolic_link;
+static BOOL g_b_init_create_symbolic_link_w;
+static BOOL g_b_init_create_symbolic_link_a;
static BOOL g_b_init_get_security_descriptor_dacl;
static BOOL g_b_init_convert_sd_to_sddl;
static BOOL g_b_init_convert_sddl_to_sd;
LPFILETIME lpIdleTime,
LPFILETIME lpKernelTime,
LPFILETIME lpUserTime);
-typedef BOOLEAN (WINAPI *CreateSymbolicLink_Proc) (
- LPTSTR lpSymlinkFileName,
- LPTSTR lpTargetFileName,
+typedef BOOLEAN (WINAPI *CreateSymbolicLinkW_Proc) (
+ LPCWSTR lpSymlinkFileName,
+ LPCWSTR lpTargetFileName,
+ DWORD dwFlags);
+typedef BOOLEAN (WINAPI *CreateSymbolicLinkA_Proc) (
+ LPCSTR lpSymlinkFileName,
+ LPCSTR lpTargetFileName,
DWORD dwFlags);
typedef BOOL (WINAPI *ConvertStringSecurityDescriptorToSecurityDescriptor_Proc) (
LPCTSTR StringSecurityDescriptor,
}
static BOOLEAN WINAPI
-create_symbolic_link (LPTSTR lpSymlinkFilename,
- LPTSTR lpTargetFileName,
+create_symbolic_link (LPCSTR lpSymlinkFilename,
+ LPCSTR lpTargetFileName,
DWORD dwFlags)
{
- static CreateSymbolicLink_Proc s_pfn_Create_Symbolic_Link = NULL;
+ static CreateSymbolicLinkW_Proc s_pfn_Create_Symbolic_LinkW = NULL;
+ static CreateSymbolicLinkA_Proc s_pfn_Create_Symbolic_LinkA = NULL;
BOOLEAN retval;
if (is_windows_9x () == TRUE)
errno = ENOSYS;
return 0;
}
- if (g_b_init_create_symbolic_link == 0)
+ if (w32_unicode_filenames)
{
- g_b_init_create_symbolic_link = 1;
-#ifdef _UNICODE
- s_pfn_Create_Symbolic_Link =
- (CreateSymbolicLink_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"),
- "CreateSymbolicLinkW");
-#else
- s_pfn_Create_Symbolic_Link =
- (CreateSymbolicLink_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"),
- "CreateSymbolicLinkA");
-#endif
+ wchar_t symfn_w[MAX_PATH], tgtfn_w[MAX_PATH];
+
+ if (g_b_init_create_symbolic_link_w == 0)
+ {
+ g_b_init_create_symbolic_link_w = 1;
+ s_pfn_Create_Symbolic_LinkW =
+ (CreateSymbolicLinkW_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"),
+ "CreateSymbolicLinkW");
+ }
+ if (s_pfn_Create_Symbolic_LinkW == NULL)
+ {
+ errno = ENOSYS;
+ return 0;
+ }
+
+ filename_to_utf16 (lpSymlinkFilename, symfn_w);
+ filename_to_utf16 (lpTargetFileName, tgtfn_w);
+ retval = s_pfn_Create_Symbolic_LinkW (symfn_w, tgtfn_w, dwFlags);
+ /* If we were denied creation of the symlink, try again after
+ enabling the SeCreateSymbolicLinkPrivilege for our process. */
+ if (!retval)
+ {
+ TOKEN_PRIVILEGES priv_current;
+
+ if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME, TRUE,
+ &priv_current))
+ {
+ retval = s_pfn_Create_Symbolic_LinkW (symfn_w, tgtfn_w, dwFlags);
+ restore_privilege (&priv_current);
+ revert_to_self ();
+ }
+ }
}
- if (s_pfn_Create_Symbolic_Link == NULL)
+ else
{
- errno = ENOSYS;
- return 0;
- }
+ char symfn_a[MAX_PATH], tgtfn_a[MAX_PATH];
- retval = s_pfn_Create_Symbolic_Link (lpSymlinkFilename, lpTargetFileName,
- dwFlags);
- /* If we were denied creation of the symlink, try again after
- enabling the SeCreateSymbolicLinkPrivilege for our process. */
- if (!retval)
- {
- TOKEN_PRIVILEGES priv_current;
+ if (g_b_init_create_symbolic_link_a == 0)
+ {
+ g_b_init_create_symbolic_link_a = 1;
+ s_pfn_Create_Symbolic_LinkA =
+ (CreateSymbolicLinkA_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"),
+ "CreateSymbolicLinkA");
+ }
+ if (s_pfn_Create_Symbolic_LinkA == NULL)
+ {
+ errno = ENOSYS;
+ return 0;
+ }
- if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME, TRUE, &priv_current))
+ filename_to_ansi (lpSymlinkFilename, symfn_a);
+ filename_to_ansi (lpTargetFileName, tgtfn_a);
+ retval = s_pfn_Create_Symbolic_LinkA (symfn_a, tgtfn_a, dwFlags);
+ /* If we were denied creation of the symlink, try again after
+ enabling the SeCreateSymbolicLinkPrivilege for our process. */
+ if (!retval)
{
- retval = s_pfn_Create_Symbolic_Link (lpSymlinkFilename, lpTargetFileName,
- dwFlags);
- restore_privilege (&priv_current);
- revert_to_self ();
+ TOKEN_PRIVILEGES priv_current;
+
+ if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME, TRUE,
+ &priv_current))
+ {
+ retval = s_pfn_Create_Symbolic_LinkA (symfn_a, tgtfn_a, dwFlags);
+ restore_privilege (&priv_current);
+ revert_to_self ();
+ }
}
}
return retval;
int
symlink (char const *filename, char const *linkname)
{
- char linkfn[MAX_PATH], *tgtfn;
+ char linkfn[MAX_UTF8_PATH], *tgtfn;
DWORD flags = 0;
int dir_access, filename_ends_in_slash;
- int dbcs_p;
/* Diagnostics follows Posix as much as possible. */
if (filename == NULL || linkname == NULL)
errno = ENOENT;
return -1;
}
- if (strlen (filename) > MAX_PATH || strlen (linkname) > MAX_PATH)
+ if (strlen (filename) > MAX_UTF8_PATH || strlen (linkname) > MAX_UTF8_PATH)
{
errno = ENAMETOOLONG;
return -1;
return -1;
}
- dbcs_p = max_filename_mbslen () > 1;
-
/* Note: since empty FILENAME was already rejected, we can safely
refer to FILENAME[1]. */
if (!(IS_DIRECTORY_SEP (filename[0]) || IS_DEVICE_SEP (filename[1])))
directory where the Emacs process runs. Note that
make-symbolic-link always makes sure LINKNAME is a fully
expanded file name. */
- char tem[MAX_PATH];
+ char tem[MAX_UTF8_PATH];
char *p = linkfn + strlen (linkfn);
- if (!dbcs_p)
- {
- while (p > linkfn && !IS_ANY_SEP (p[-1]))
- p--;
- }
- else
- {
- char *p1 = CharPrevExA (file_name_codepage, linkfn, p, 0);
-
- while (p > linkfn && !IS_ANY_SEP (*p1))
- {
- p = p1;
- p1 = CharPrevExA (file_name_codepage, linkfn, p1, 0);
- }
- }
+ while (p > linkfn && !IS_ANY_SEP (p[-1]))
+ p--;
if (p > linkfn)
strncpy (tem, linkfn, p - linkfn);
tem[p - linkfn] = '\0';
exist, but ends in a slash, we create a symlink to directory. If
FILENAME exists and is a directory, we always create a symlink to
directory. */
- if (!dbcs_p)
- filename_ends_in_slash = IS_DIRECTORY_SEP (filename[strlen (filename) - 1]);
- else
- {
- const char *end = filename + strlen (filename);
- const char *n = CharPrevExA (file_name_codepage, filename, end, 0);
-
- filename_ends_in_slash = IS_DIRECTORY_SEP (*n);
- }
+ filename_ends_in_slash = IS_DIRECTORY_SEP (filename[strlen (filename) - 1]);
if (dir_access == 0 || filename_ends_in_slash)
flags = SYMBOLIC_LINK_FLAG_DIRECTORY;
is_symlink (const char *filename)
{
DWORD attrs;
- WIN32_FIND_DATA wfd;
+ wchar_t filename_w[MAX_PATH];
+ char filename_a[MAX_PATH];
+ WIN32_FIND_DATAW wfdw;
+ WIN32_FIND_DATAA wfda;
HANDLE fh;
+ int attrs_mean_symlink;
- attrs = GetFileAttributes (filename);
+ if (w32_unicode_filenames)
+ {
+ filename_to_utf16 (filename, filename_w);
+ attrs = GetFileAttributesW (filename_w);
+ }
+ else
+ {
+ filename_to_ansi (filename, filename_a);
+ attrs = GetFileAttributesA (filename_a);
+ }
if (attrs == -1)
{
DWORD w32err = GetLastError ();
if ((attrs & FILE_ATTRIBUTE_REPARSE_POINT) == 0)
return 0;
logon_network_drive (filename);
- fh = FindFirstFile (filename, &wfd);
+ if (w32_unicode_filenames)
+ {
+ fh = FindFirstFileW (filename_w, &wfdw);
+ attrs_mean_symlink =
+ (wfdw.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) != 0
+ && (wfdw.dwReserved0 & IO_REPARSE_TAG_SYMLINK) == IO_REPARSE_TAG_SYMLINK;
+ }
+ else if (_mbspbrk (filename_a, "?"))
+ {
+ /* filename_to_ansi failed to convert the file name. */
+ errno = ENOENT;
+ return 0;
+ }
+ else
+ {
+ fh = FindFirstFileA (filename_a, &wfda);
+ attrs_mean_symlink =
+ (wfda.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) != 0
+ && (wfda.dwReserved0 & IO_REPARSE_TAG_SYMLINK) == IO_REPARSE_TAG_SYMLINK;
+ }
if (fh == INVALID_HANDLE_VALUE)
return 0;
FindClose (fh);
- return (wfd.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) != 0
- && (wfd.dwReserved0 & IO_REPARSE_TAG_SYMLINK) == IO_REPARSE_TAG_SYMLINK;
+ return attrs_mean_symlink;
}
/* If NAME identifies a symbolic link, copy into BUF the file name of
int restore_privs = 0;
HANDLE sh;
ssize_t retval;
+ char resolved[MAX_UTF8_PATH];
if (name == NULL)
{
path = map_w32_filename (name, NULL);
- if (strlen (path) > MAX_PATH)
+ if (strlen (path) > MAX_UTF8_PATH)
{
errno = ENAMETOOLONG;
return -1;
e.g. 'C:\Users\All Users', GENERIC_READ fails with
ERROR_ACCESS_DENIED. Zero seems to work just fine, both for file
and directory symlinks. */
- sh = CreateFile (path, 0, 0, NULL, OPEN_EXISTING,
- FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS,
- NULL);
+ if (w32_unicode_filenames)
+ {
+ wchar_t path_w[MAX_PATH];
+
+ filename_to_utf16 (path, path_w);
+ sh = CreateFileW (path_w, 0, 0, NULL, OPEN_EXISTING,
+ FILE_FLAG_OPEN_REPARSE_POINT
+ | FILE_FLAG_BACKUP_SEMANTICS,
+ NULL);
+ }
+ else
+ {
+ char path_a[MAX_PATH];
+
+ filename_to_ansi (path, path_a);
+ sh = CreateFileA (path_a, 0, 0, NULL, OPEN_EXISTING,
+ FILE_FLAG_OPEN_REPARSE_POINT
+ | FILE_FLAG_BACKUP_SEMANTICS,
+ NULL);
+ }
if (sh != INVALID_HANDLE_VALUE)
{
BYTE reparse_buf[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
reparse_data, then convert it to multibyte encoding in
the current locale's codepage. */
WCHAR *lwname;
- BYTE lname[MAX_PATH];
- USHORT lname_len;
+ size_t lname_size;
USHORT lwname_len =
reparse_data->SymbolicLinkReparseBuffer.PrintNameLength;
WCHAR *lwname_src =
reparse_data->SymbolicLinkReparseBuffer.PathBuffer
+ reparse_data->SymbolicLinkReparseBuffer.PrintNameOffset/sizeof(WCHAR);
- /* This updates file_name_codepage which we need below. */
- int dbcs_p = max_filename_mbslen () > 1;
+ size_t size_to_copy = buf_size;
/* According to MSDN, PrintNameLength does not include the
terminating null character. */
lwname = alloca ((lwname_len + 1) * sizeof(WCHAR));
memcpy (lwname, lwname_src, lwname_len);
lwname[lwname_len/sizeof(WCHAR)] = 0; /* null-terminate */
-
- lname_len = WideCharToMultiByte (file_name_codepage, 0, lwname, -1,
- lname, MAX_PATH, NULL, NULL);
- if (!lname_len)
- {
- /* WideCharToMultiByte failed. */
- DWORD w32err1 = GetLastError ();
-
- switch (w32err1)
- {
- case ERROR_INSUFFICIENT_BUFFER:
- errno = ENAMETOOLONG;
- break;
- case ERROR_INVALID_PARAMETER:
- errno = EFAULT;
- break;
- case ERROR_NO_UNICODE_TRANSLATION:
- errno = ENOENT;
- break;
- default:
- errno = EINVAL;
- break;
- }
- }
- else
- {
- size_t size_to_copy = buf_size;
- BYTE *p = lname, *p2;
- BYTE *pend = p + lname_len;
-
- /* Normalize like dostounix_filename does, but we don't
- want to assume that lname is null-terminated. */
- if (dbcs_p)
- p2 = CharNextExA (file_name_codepage, p, 0);
- else
- p2 = p + 1;
- if (*p && *p2 == ':' && *p >= 'A' && *p <= 'Z')
- {
- *p += 'a' - 'A';
- p += 2;
- }
- while (p <= pend)
- {
- if (*p == '\\')
- *p = '/';
- if (dbcs_p)
- {
- p = CharNextExA (file_name_codepage, p, 0);
- /* CharNextExA doesn't advance at null character. */
- if (!*p)
- break;
- }
- else
- ++p;
- }
- /* Testing for null-terminated LNAME is paranoia:
- WideCharToMultiByte should always return a
- null-terminated string when its 4th argument is -1
- and its 3rd argument is null-terminated (which they
- are, see above). */
- if (lname[lname_len - 1] == '\0')
- lname_len--;
- if (lname_len <= buf_size)
- size_to_copy = lname_len;
- strncpy (buf, lname, size_to_copy);
- /* Success! */
- retval = size_to_copy;
- }
+ filename_from_utf16 (lwname, resolved);
+ dostounix_filename (resolved);
+ lname_size = strlen (resolved) + 1;
+ if (lname_size <= buf_size)
+ size_to_copy = lname_size;
+ strncpy (buf, resolved, size_to_copy);
+ /* Success! */
+ retval = size_to_copy;
}
CloseHandle (sh);
}
{
/* Rely on a hack: an open directory is modeled as file descriptor 0,
as in fstatat. FIXME: Add proper support for readlinkat. */
- char fullname[MAX_PATH];
+ char fullname[MAX_UTF8_PATH];
if (fd != AT_FDCWD)
{
static char *
chase_symlinks (const char *file)
{
- static char target[MAX_PATH];
- char link[MAX_PATH];
+ static char target[MAX_UTF8_PATH];
+ char link[MAX_UTF8_PATH];
+ wchar_t target_w[MAX_PATH], link_w[MAX_PATH];
+ char target_a[MAX_PATH], link_a[MAX_PATH];
ssize_t res, link_len;
int loop_count = 0;
- int dbcs_p;
if (is_windows_9x () == TRUE || !is_symlink (file))
return (char *)file;
- if ((link_len = GetFullPathName (file, MAX_PATH, link, NULL)) == 0)
- return (char *)file;
+ if (w32_unicode_filenames)
+ {
+ wchar_t file_w[MAX_PATH];
+
+ filename_to_utf16 (file, file_w);
+ if (GetFullPathNameW (file_w, MAX_PATH, link_w, NULL) == 0)
+ return (char *)file;
+ filename_from_utf16 (link_w, link);
+ }
+ else
+ {
+ char file_a[MAX_PATH];
+
+ filename_to_ansi (file, file_a);
+ if (GetFullPathNameA (file_a, MAX_PATH, link_a, NULL) == 0)
+ return (char *)file;
+ filename_from_ansi (link_a, link);
+ }
+ link_len = strlen (link);
- dbcs_p = max_filename_mbslen () > 1;
target[0] = '\0';
do {
/* Remove trailing slashes, as we want to resolve the last
non-trivial part of the link name. */
- if (!dbcs_p)
- {
- while (link_len > 3 && IS_DIRECTORY_SEP (link[link_len-1]))
- link[link_len--] = '\0';
- }
- else if (link_len > 3)
- {
- char *n = CharPrevExA (file_name_codepage, link, link + link_len, 0);
-
- while (n >= link + 2 && IS_DIRECTORY_SEP (*n))
- {
- n[1] = '\0';
- n = CharPrevExA (file_name_codepage, link, n, 0);
- }
- }
+ while (link_len > 3 && IS_DIRECTORY_SEP (link[link_len-1]))
+ link[link_len--] = '\0';
- res = readlink (link, target, MAX_PATH);
+ res = readlink (link, target, MAX_UTF8_PATH);
if (res > 0)
{
target[res] = '\0';
the symlink, then copy the result back to target. */
char *p = link + link_len;
- if (!dbcs_p)
- {
- while (p > link && !IS_ANY_SEP (p[-1]))
- p--;
- }
- else
- {
- char *p1 = CharPrevExA (file_name_codepage, link, p, 0);
-
- while (p > link && !IS_ANY_SEP (*p1))
- {
- p = p1;
- p1 = CharPrevExA (file_name_codepage, link, p1, 0);
- }
- }
+ while (p > link && !IS_ANY_SEP (p[-1]))
+ p--;
strcpy (p, target);
strcpy (target, link);
}
/* Resolve any "." and ".." to get a fully-qualified file name
in link[] again. */
- link_len = GetFullPathName (target, MAX_PATH, link, NULL);
+ if (w32_unicode_filenames)
+ {
+ filename_to_utf16 (target, target_w);
+ link_len = GetFullPathNameW (target_w, MAX_PATH, link_w, NULL);
+ if (link_len > 0)
+ filename_from_utf16 (link_w, link);
+ }
+ else
+ {
+ filename_to_ansi (target, target_a);
+ link_len = GetFullPathNameA (target_a, MAX_PATH, link_a, NULL);
+ if (link_len > 0)
+ filename_from_ansi (link_a, link);
+ }
+ link_len = strlen (link);
}
} while (res > 0 && link_len > 0 && ++loop_count <= 100);
struct allocator const *alloc,
ssize_t (*preadlinkat) (int, char const *, char *, size_t))
{
- char linkname[MAX_PATH];
+ char linkname[MAX_UTF8_PATH];
ssize_t link_size;
link_size = preadlinkat (fd, filename, linkname, sizeof(linkname));
g_b_init_get_length_sid = 0;
g_b_init_get_native_system_info = 0;
g_b_init_get_system_times = 0;
- g_b_init_create_symbolic_link = 0;
+ g_b_init_create_symbolic_link_w = 0;
+ g_b_init_create_symbolic_link_a = 0;
g_b_init_get_security_descriptor_dacl = 0;
g_b_init_convert_sd_to_sddl = 0;
g_b_init_convert_sddl_to_sd = 0;
projects / emacs.git / commitdiff