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Cygwin: fs_info: update filesystem flags and check Windows 7 flags 

Update the list of filesystem flags to the flags supported since
Windows 7.  Make sure to use the new flags only with Windows
filesystems, not with 3rd party filesystems.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2023-03-20 12:22:07 +01:00
parent 5da71b6059
commit fcccdc4021
2 changed files with 74 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
winsup/cygwin/local_includes/winlean.h
View File

@ -74,6 +74,29 @@ details. */
#undef CRITICAL
#endif
/* Filesystem flags not yet supported by Mingw-w64 headers. */
#ifndef FILE_RETURNS_CLEANUP_RESULT_INFO
#define FILE_RETURNS_CLEANUP_RESULT_INFO 0x00000200
#endif
#ifndef FILE_SUPPORTS_POSIX_UNLINK_RENAME
#define FILE_SUPPORTS_POSIX_UNLINK_RENAME 0x00000400
#endif
#ifndef FILE_SUPPORTS_INTEGRITY_STREAMS
#define FILE_SUPPORTS_INTEGRITY_STREAMS 0x04000000
#endif
#ifndef FILE_SUPPORTS_BLOCK_REFCOUNTING
#define FILE_SUPPORTS_BLOCK_REFCOUNTING 0x08000000
#endif
#ifndef FILE_SUPPORTS_SPARSE_VDL
#define FILE_SUPPORTS_SPARSE_VDL 0x10000000
#endif
#ifndef FILE_DAX_VOLUME
#define FILE_DAX_VOLUME 0x20000000
#endif
#ifndef FILE_SUPPORTS_GHOSTING
#define FILE_SUPPORTS_GHOSTING 0x40000000
#endif
/* So-called "Microsoft Account" SIDs (S-1-11-...) have a netbios domain name
"MicrosoftAccounts". The new "Application Container SIDs" (S-1-15-...)
have a netbios domain name "APPLICATION PACKAGE AUTHORITY"

60
winsup/cygwin/mount.cc
View File

@ -319,12 +319,49 @@ fs_info::update (PUNICODE_STRING upath, HANDLE in_vol)
to Windows 11. The important point here is to test only flags indicating
capabilities and to ignore flags indicating a specific state of this
volume. At present these flags to ignore are FILE_VOLUME_IS_COMPRESSED,
FILE_READ_ONLY_VOLUME, and FILE_SEQUENTIAL_WRITE_ONCE. The additional
filesystem flags supported since Windows 7 are also ignored for now.
They add information only for filesystems also supporting these flags,
right now only NTFS. */
#define GETVOLINFO_VALID_MASK (0x002701ffUL)
FILE_READ_ONLY_VOLUME, FILE_SEQUENTIAL_WRITE_ONCE and FILE_DAX_VOLUME. */
#define GETVOLINFO_VALID_MASK (FILE_CASE_SENSITIVE_SEARCH \
| FILE_CASE_PRESERVED_NAMES \
| FILE_UNICODE_ON_DISK \
| FILE_PERSISTENT_ACLS \
| FILE_FILE_COMPRESSION \
| FILE_VOLUME_QUOTAS \
| FILE_SUPPORTS_SPARSE_FILES \
| FILE_SUPPORTS_REPARSE_POINTS \
| FILE_SUPPORTS_REMOTE_STORAGE \
| FILE_RETURNS_CLEANUP_RESULT_INFO \
| FILE_SUPPORTS_POSIX_UNLINK_RENAME \
| FILE_SUPPORTS_OBJECT_IDS \
| FILE_SUPPORTS_ENCRYPTION \
| FILE_NAMED_STREAMS \
| FILE_SUPPORTS_TRANSACTIONS \
| FILE_SUPPORTS_HARD_LINKS \
| FILE_SUPPORTS_EXTENDED_ATTRIBUTES \
| FILE_SUPPORTS_OPEN_BY_FILE_ID \
| FILE_SUPPORTS_USN_JOURNAL \
| FILE_SUPPORTS_INTEGRITY_STREAMS \
| FILE_SUPPORTS_BLOCK_REFCOUNTING \
| FILE_SUPPORTS_SPARSE_VDL \
| FILE_SUPPORTS_GHOSTING)
/* This is the pre-Win7 mask used to recognize 3rd-party drivers. We'll never
learn in time when those drivers start to support the new (har har) Win7 FS
flags. */
#define GETVOLINFO_NON_WIN_MASK (FILE_CASE_SENSITIVE_SEARCH \
| FILE_CASE_PRESERVED_NAMES \
| FILE_UNICODE_ON_DISK \
| FILE_PERSISTENT_ACLS \
| FILE_FILE_COMPRESSION \
| FILE_VOLUME_QUOTAS \
| FILE_SUPPORTS_SPARSE_FILES \
| FILE_SUPPORTS_REPARSE_POINTS \
| FILE_SUPPORTS_REMOTE_STORAGE \
| FILE_SUPPORTS_OBJECT_IDS \
| FILE_SUPPORTS_ENCRYPTION \
| FILE_NAMED_STREAMS \
| FILE_SUPPORTS_TRANSACTIONS)
#define TEST_GVI(f,m) (((f) & GETVOLINFO_VALID_MASK) == (m))
#define TEST_GVI_NON_WIN(f,m) (((f) & GETVOLINFO_NON_WIN_MASK) == (m))
/* FIXME: This flag twist is getting awkward. There should really be some
other method. Maybe we need mount flags to allow the user to fix file
@ -335,7 +372,7 @@ fs_info::update (PUNICODE_STRING upath, HANDLE in_vol)
#define SAMBA_IGNORE (FILE_VOLUME_QUOTAS \
| FILE_SUPPORTS_OBJECT_IDS \
| FILE_UNICODE_ON_DISK)
#define FS_IS_SAMBA TEST_GVI(flags () & ~SAMBA_IGNORE, \
#define FS_IS_SAMBA TEST_GVI_NON_WIN(flags () & ~SAMBA_IGNORE, \
FILE_CASE_SENSITIVE_SEARCH \
| FILE_CASE_PRESERVED_NAMES \
| FILE_PERSISTENT_ACLS)
@ -343,12 +380,12 @@ fs_info::update (PUNICODE_STRING upath, HANDLE in_vol)
#define NETAPP_IGNORE (FILE_SUPPORTS_SPARSE_FILES \
| FILE_SUPPORTS_REPARSE_POINTS \
| FILE_PERSISTENT_ACLS)
#define FS_IS_NETAPP_DATAONTAP TEST_GVI(flags () & ~NETAPP_IGNORE, \
#define FS_IS_NETAPP_DATAONTAP TEST_GVI_NON_WIN(flags () & ~NETAPP_IGNORE, \
FILE_CASE_SENSITIVE_SEARCH \
| FILE_CASE_PRESERVED_NAMES \
| FILE_UNICODE_ON_DISK \
| FILE_NAMED_STREAMS)
/* These are the minimal flags supported by NTFS since Windows 2000. Every
/* These are the minimal flags supported by NTFS since Windows 7. Every
filesystem not supporting these flags is not a native NTFS. We subsume
them under the filesystem type "cifs". */
#define MINIMAL_WIN_NTFS_FLAGS (FILE_CASE_SENSITIVE_SEARCH \
@ -361,7 +398,12 @@ fs_info::update (PUNICODE_STRING upath, HANDLE in_vol)
| FILE_SUPPORTS_REPARSE_POINTS \
| FILE_SUPPORTS_OBJECT_IDS \
| FILE_SUPPORTS_ENCRYPTION \
| FILE_NAMED_STREAMS)
| FILE_NAMED_STREAMS \
| FILE_SUPPORTS_TRANSACTIONS \
| FILE_SUPPORTS_HARD_LINKS \
| FILE_SUPPORTS_EXTENDED_ATTRIBUTES \
| FILE_SUPPORTS_OPEN_BY_FILE_ID \
| FILE_SUPPORTS_USN_JOURNAL)
#define FS_IS_WINDOWS_NTFS TEST_GVI(flags () & MINIMAL_WIN_NTFS_FLAGS, \
MINIMAL_WIN_NTFS_FLAGS)
/* These are the exact flags of a real Windows FAT/FAT32 filesystem.