Cygwin: Add FS_IOC_GETFLAGS and FS_IOC_SETFLAGS ioctls
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
parent
4021509ba2
commit
af4a65a26d
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@ -534,6 +534,8 @@ LoadDLLprime (ws2_32, _wsock_init, 0)
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LoadDLLfunc (CheckTokenMembership, 12, advapi32)
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LoadDLLfunc (CreateProcessAsUserW, 44, advapi32)
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LoadDLLfunc (DeregisterEventSource, 4, advapi32)
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LoadDLLfunc (DecryptFileW, 8, advapi32)
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LoadDLLfunc (EncryptFileW, 4, advapi32)
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LoadDLLfunc (LogonUserW, 24, advapi32)
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LoadDLLfunc (LookupAccountNameW, 28, advapi32)
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LoadDLLfunc (LookupAccountSidW, 28, advapi32)
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@ -1437,6 +1437,8 @@ class fhandler_disk_file: public fhandler_base
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int __reg3 readdir_helper (DIR *, dirent *, DWORD, DWORD, PUNICODE_STRING fname);
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int prw_open (bool, void *);
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uint64_t fs_ioc_getflags ();
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int fs_ioc_setflags (uint64_t);
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public:
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fhandler_disk_file ();
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@ -1462,6 +1464,7 @@ class fhandler_disk_file: public fhandler_base
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int __reg2 link (const char *);
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int __reg2 utimens (const struct timespec *);
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int __reg2 fstatvfs (struct statvfs *buf);
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int ioctl (unsigned int cmd, void *buf);
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HANDLE mmap (caddr_t *addr, size_t len, int prot, int flags, off_t off);
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int munmap (HANDLE h, caddr_t addr, size_t len);
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@ -25,6 +25,7 @@ details. */
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#include "devices.h"
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#include "ldap.h"
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#include <aio.h>
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#include <cygwin/fs.h>
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#define _COMPILING_NEWLIB
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#include <dirent.h>
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@ -2437,6 +2438,252 @@ fhandler_disk_file::closedir (DIR *dir)
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return res;
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}
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uint64_t
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fhandler_disk_file::fs_ioc_getflags ()
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{
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NTSTATUS status;
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IO_STATUS_BLOCK io;
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FILE_BASIC_INFORMATION fbi;
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FILE_CASE_SENSITIVE_INFORMATION fcsi;
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uint64_t flags = 0;
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status = NtQueryInformationFile (get_handle (), &io, &fbi, sizeof fbi,
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FileBasicInformation);
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if (NT_SUCCESS (status))
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{
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flags = (uint64_t) fbi.FileAttributes & FS_FL_USER_VISIBLE;
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pc.file_attributes (fbi.FileAttributes);
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}
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else
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flags = (uint64_t) pc.file_attributes () & FS_FL_USER_VISIBLE;
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if (pc.isdir () && wincap.has_case_sensitive_dirs ()
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&& !pc.isremote () && pc.fs_is_ntfs ())
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{
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fcsi.Flags = 0;
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status = NtQueryInformationFile (get_handle (), &io,
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&fcsi, sizeof fcsi,
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FileCaseSensitiveInformation);
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if (NT_SUCCESS (status)
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&& (fcsi.Flags & FILE_CS_FLAG_CASE_SENSITIVE_DIR))
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flags |= FS_CASESENS_FL;
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}
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return flags;
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}
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/* Settable DOS attributes */
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#define FS_FL_SETATTRIBS (FS_READONLY_FL \
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| FS_HIDDEN_FL \
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| FS_SYSTEM_FL \
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| FS_ARCHIVE_FL \
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| FS_TEMP_FL \
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| FS_NOTINDEXED_FL)
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int
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fhandler_disk_file::fs_ioc_setflags (uint64_t flags)
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{
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int ret = -1;
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uint64_t old_flags;
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HANDLE fh;
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NTSTATUS status;
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OBJECT_ATTRIBUTES attr;
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IO_STATUS_BLOCK io;
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FILE_BASIC_INFORMATION fbi;
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FILE_SET_SPARSE_BUFFER fssb;
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USHORT comp;
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FILE_CASE_SENSITIVE_INFORMATION fcsi;
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if ((get_access () & (GENERIC_WRITE | FILE_WRITE_ATTRIBUTES)) != 0)
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fh = get_handle ();
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else
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{
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status = NtOpenFile (&fh, FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES,
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pc.init_reopen_attr (attr, get_handle ()), &io,
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FILE_SHARE_VALID_FLAGS,
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FILE_OPEN_FOR_BACKUP_INTENT);
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if (!NT_SUCCESS (status))
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{
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fh = get_handle ();
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__seterrno_from_nt_status (status);
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goto out;
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}
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}
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old_flags = fs_ioc_getflags ();
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if ((old_flags & FS_FL_SETATTRIBS) != (flags & FS_FL_SETATTRIBS))
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{
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fbi.CreationTime.QuadPart
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= fbi.LastAccessTime.QuadPart
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= fbi.LastWriteTime.QuadPart
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= fbi.ChangeTime.QuadPart = 0LL;
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fbi.FileAttributes = (ULONG) old_flags;
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fbi.FileAttributes &= ~FS_FL_SETATTRIBS;
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fbi.FileAttributes |= (flags & FS_FL_SETATTRIBS);
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if (fbi.FileAttributes == 0)
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fbi.FileAttributes = FILE_ATTRIBUTE_NORMAL;
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status = NtSetInformationFile (fh, &io, &fbi, sizeof fbi,
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FileBasicInformation);
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if (!NT_SUCCESS (status))
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{
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__seterrno_from_nt_status (status);
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goto out;
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}
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}
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if (!pc.isdir() && (flags & FS_SPARSE_FL) != (old_flags & FS_SPARSE_FL))
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{
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fssb.SetSparse = (flags & FS_SPARSE_FL) ? TRUE : FALSE;
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status = NtFsControlFile (fh, NULL, NULL, NULL, &io,
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FSCTL_SET_SPARSE, &fssb, sizeof fssb, NULL, 0);
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if (!NT_SUCCESS (status))
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{
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__seterrno_from_nt_status (status);
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goto out;
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}
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}
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if (pc.isdir () && (flags & FS_CASESENS_FL) != (old_flags & FS_CASESENS_FL))
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{
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if (wincap.has_case_sensitive_dirs ()
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&& !pc.isremote () && pc.fs_is_ntfs ())
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{
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fcsi.Flags = (flags & FS_CASESENS_FL)
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? FILE_CS_FLAG_CASE_SENSITIVE_DIR : 0;
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status = NtSetInformationFile (fh, &io, &fcsi, sizeof fcsi,
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FileCaseSensitiveInformation);
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if (!NT_SUCCESS (status))
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{
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/* Special case: The directory contains files which only
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differ in case. NtSetInformationFile refuses to change
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back to case insensitivity and returns status 0xc00004b3.
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There's no STATUS_xyz macro assigned to that value yet,
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nor does it map to a useful Win32 error value. */
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if (status == (NTSTATUS) 0xc00004b3)
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set_errno (EINVAL); /* Does that make sense? */
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else
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__seterrno_from_nt_status (status);
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goto out;
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}
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}
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else
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{
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set_errno (ENOTSUP);
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goto out;
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}
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}
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if ((flags & FS_COMPRESSED_FL) != (old_flags & FS_COMPRESSED_FL))
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{
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if (fh != get_handle ())
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NtClose (fh);
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fh = NULL;
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if ((get_access () & (GENERIC_WRITE | GENERIC_READ))
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!= (GENERIC_WRITE | GENERIC_READ))
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{
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status = NtOpenFile (&fh, GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
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pc.init_reopen_attr (attr, get_handle ()), &io,
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FILE_SHARE_VALID_FLAGS,
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FILE_SYNCHRONOUS_IO_NONALERT
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| FILE_OPEN_FOR_BACKUP_INTENT);
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if (!NT_SUCCESS (status))
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{
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fh = get_handle ();
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__seterrno_from_nt_status (status);
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goto out;
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}
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}
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comp = (flags & FS_COMPRESSED_FL)
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? COMPRESSION_FORMAT_DEFAULT : COMPRESSION_FORMAT_NONE;
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status = NtFsControlFile (fh, NULL, NULL, NULL, &io,
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FSCTL_SET_COMPRESSION, &comp, sizeof comp,
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NULL, 0);
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if (!NT_SUCCESS (status))
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{
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__seterrno_from_nt_status (status);
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goto out;
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}
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}
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if (!pc.isdir() && (flags & FS_ENCRYPT_FL) != (old_flags & FS_ENCRYPT_FL))
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{
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tmp_pathbuf tp;
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PWCHAR path = tp.w_get ();
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BOOL cret;
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/* EncryptFileW/DecryptFileW needs exclusive access. */
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if (fh != get_handle ())
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NtClose (fh);
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NtClose (get_handle ());
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set_io_handle (NULL);
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pc.get_wide_win32_path (path);
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cret = (flags & FS_ENCRYPT_FL)
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? EncryptFileW (path) : DecryptFileW (path, 0);
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status = NtOpenFile (&fh, get_access (),
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pc.get_object_attr (attr, sec_none_nih), &io,
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FILE_SHARE_VALID_FLAGS,
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FILE_SYNCHRONOUS_IO_NONALERT
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| FILE_OPEN_FOR_BACKUP_INTENT);
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if (!NT_SUCCESS (status))
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{
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__seterrno_from_nt_status (status);
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return -1;
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}
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set_io_handle (fh);
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if (!cret)
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{
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__seterrno ();
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goto out;
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}
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}
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ret = 0;
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out:
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status = NtQueryInformationFile (fh, &io, &fbi, sizeof fbi,
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FileBasicInformation);
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if (NT_SUCCESS (status))
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pc.file_attributes (fbi.FileAttributes);
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if (fh != get_handle ())
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NtClose (fh);
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return ret;
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}
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int
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fhandler_disk_file::ioctl (unsigned int cmd, void *p)
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{
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int ret = -1;
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uint64_t flags = 0;
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switch (cmd)
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{
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case FS_IOC_GETFLAGS:
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__try
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{
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uint64_t *fp = (uint64_t *) p;
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*fp = fs_ioc_getflags ();
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ret = 0;
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}
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__except (EFAULT) {}
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__endtry
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break;
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case FS_IOC_SETFLAGS:
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__try
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{
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flags = *(__uint64_t *) p;
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}
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__except (EFAULT)
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{
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break;
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}
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__endtry
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if (flags & ~FS_FL_USER_MODIFIABLE)
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{
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set_errno (EINVAL);
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break;
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}
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ret = fs_ioc_setflags (flags);
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break;
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default:
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ret = fhandler_base::ioctl (cmd, p);
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break;
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}
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syscall_printf ("%d = ioctl_file(%x, %p)", ret, cmd, p);
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return ret;
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}
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fhandler_cygdrive::fhandler_cygdrive () :
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fhandler_disk_file ()
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{
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@ -10,6 +10,8 @@ details. */
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#ifndef _CYGWIN_FS_H_
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#define _CYGWIN_FS_H_
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#include <asm/socket.h>
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#define BLKRRPART 0x0000125f
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#define BLKGETSIZE 0x00001260
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#define BLKSSZGET 0x00001268
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@ -19,6 +21,31 @@ details. */
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#define BLKPBSZGET 0x0000127b
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#define BLKGETSIZE64 0x00041268
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/* Get/Set file attributes */
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#define FS_IOC_GETFLAGS _IOR('f', 1, __uint64_t)
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#define FS_IOC_SETFLAGS _IOW('f', 2, __uint64_t)
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/* Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS)
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This is loosely following the Linux inode flags. Basically it's just
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a convenient way to handle certain aspects of files on Windows which
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are not covered by POSIX calls, mostly connected to DOS attributes. */
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#define FS_READONLY_FL 0x000000001ULL /* DOS R/O */
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#define FS_HIDDEN_FL 0x000000002ULL /* DOS Hidden */
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#define FS_SYSTEM_FL 0x000000004ULL /* DOS System */
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#define FS_ARCHIVE_FL 0x000000020ULL /* DOS Archive */
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#define FS_TEMP_FL 0x000000100ULL /* DOS Temporary */
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#define FS_SPARSE_FL 0x000000200ULL /* Sparse file */
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#define FS_REPARSE_FL 0x000000400ULL /* Reparse point */
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#define FS_COMPRESSED_FL 0x000000800ULL /* Compressed file */
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#define FS_OFFLINE_FL 0x000001000ULL /* DOS Offline */
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#define FS_NOTINDEXED_FL 0x000002000ULL /* DOS Not context indexed */
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#define FS_ENCRYPT_FL 0x000004000ULL /* Encrypted file */
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#define FS_CASESENS_FL 0x100000000ULL /* Case sensitive dir */
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#define FS_FL_USER_VISIBLE 0x100007f27ULL /* User visible flags */
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#define FS_FL_USER_MODIFIABLE 0x100006b27ULL /* User modifiable flags */
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/* Flags for renameat2, from /usr/include/linux/fs.h. For now we
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support only RENAME_NOREPLACE. */
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#define RENAME_NOREPLACE (1 << 0)
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