Module: wine Branch: master Commit: a14cdc8ba0cfcfc25aebfff4c734a6ae6288133b URL: https://source.winehq.org/git/wine.git/?a=commit;h=a14cdc8ba0cfcfc25aebfff4c...
Author: Zebediah Figura z.figura12@gmail.com Date: Wed Apr 8 16:06:04 2020 -0500
ntdll: Fill the volume serial number in NtQueryInformationFile(FileIdInformation).
Signed-off-by: Zebediah Figura zfigura@codeweavers.com Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/ntdll/file.c | 246 ++++++++++++++++++++++++++++-------------------------- 1 file changed, 126 insertions(+), 120 deletions(-)
diff --git a/dlls/ntdll/file.c b/dlls/ntdll/file.c index dac8538add..a9770290e0 100644 --- a/dlls/ntdll/file.c +++ b/dlls/ntdll/file.c @@ -2237,6 +2237,124 @@ static NTSTATUS server_get_file_info( HANDLE handle, IO_STATUS_BLOCK *io, void *
}
+/* Find a DOS device which can act as the root of "path". + * Similar to find_drive_root(), but returns -1 instead of crossing volumes. */ +static int find_dos_device( const char *path ) +{ + int len = strlen(path); + int drive; + char *buffer; + struct stat st; + struct drive_info info[MAX_DOS_DRIVES]; + dev_t dev_id; + + if (!DIR_get_drives_info( info )) return -1; + + if (stat( path, &st ) < 0) return -1; + dev_id = st.st_dev; + + /* strip off trailing slashes */ + while (len > 1 && path[len - 1] == '/') len--; + + /* make a copy of the path */ + if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, len + 1 ))) return -1; + memcpy( buffer, path, len ); + buffer[len] = 0; + + for (;;) + { + if (!stat( buffer, &st ) && S_ISDIR( st.st_mode )) + { + if (st.st_dev != dev_id) break; + + for (drive = 0; drive < MAX_DOS_DRIVES; drive++) + { + if ((info[drive].dev == st.st_dev) && (info[drive].ino == st.st_ino)) + { + if (len == 1) len = 0; /* preserve root slash in returned path */ + TRACE( "%s -> drive %c:, root=%s, name=%s\n", + debugstr_a(path), 'A' + drive, debugstr_a(buffer), debugstr_a(path + len)); + RtlFreeHeap( GetProcessHeap(), 0, buffer ); + return drive; + } + } + } + if (len <= 1) break; /* reached root */ + while (path[len - 1] != '/') len--; + while (path[len - 1] == '/') len--; + buffer[len] = 0; + } + RtlFreeHeap( GetProcessHeap(), 0, buffer ); + return -1; +} + +static struct mountmgr_unix_drive *get_mountmgr_fs_info( HANDLE handle, int fd ) +{ + struct mountmgr_unix_drive *drive; + OBJECT_ATTRIBUTES attr; + UNICODE_STRING string; + ANSI_STRING unix_name; + IO_STATUS_BLOCK io; + HANDLE mountmgr; + NTSTATUS status; + int letter; + + if (server_get_unix_name( handle, &unix_name )) + return NULL; + + letter = find_dos_device( unix_name.Buffer ); + RtlFreeAnsiString( &unix_name ); + + if (!(drive = RtlAllocateHeap( GetProcessHeap(), 0, 1024 ))) + return NULL; + + if (letter == -1) + { + struct stat st; + + if (fstat( fd, &st ) == -1) + { + RtlFreeHeap( GetProcessHeap(), 0, drive ); + return NULL; + } + + drive->unix_dev = st.st_dev; + drive->letter = 0; + } + else + drive->letter = 'a' + letter; + + RtlInitUnicodeString( &string, MOUNTMGR_DEVICE_NAME ); + InitializeObjectAttributes( &attr, &string, 0, NULL, NULL ); + if (NtOpenFile( &mountmgr, GENERIC_READ | SYNCHRONIZE, &attr, &io, + FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_SYNCHRONOUS_IO_NONALERT )) + return NULL; + + status = NtDeviceIoControlFile( mountmgr, NULL, NULL, NULL, &io, IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE, + drive, sizeof(*drive), drive, 1024 ); + if (status == STATUS_BUFFER_OVERFLOW) + { + if (!(drive = RtlReAllocateHeap( GetProcessHeap(), 0, drive, drive->size ))) + { + RtlFreeHeap( GetProcessHeap(), 0, drive ); + NtClose( mountmgr ); + return NULL; + } + status = NtDeviceIoControlFile( mountmgr, NULL, NULL, NULL, &io, IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE, + drive, sizeof(*drive), drive, drive->size ); + } + NtClose( mountmgr ); + + if (status) + { + WARN("failed to retrieve filesystem type from mountmgr, status %#x\n", status); + RtlFreeHeap( GetProcessHeap(), 0, drive ); + return NULL; + } + + return drive; +} + /****************************************************************************** * NtQueryInformationFile [NTDLL.@] * ZwQueryInformationFile [NTDLL.@] @@ -2507,8 +2625,15 @@ NTSTATUS WINAPI NtQueryInformationFile( HANDLE hFile, PIO_STATUS_BLOCK io, if (fd_get_file_info( fd, options, &st, &attr ) == -1) io->u.Status = FILE_GetNtStatus(); else { + struct mountmgr_unix_drive *drive; FILE_ID_INFORMATION *info = ptr; - info->VolumeSerialNumber = 0; /* FIXME */ + + info->VolumeSerialNumber = 0; + if ((drive = get_mountmgr_fs_info( hFile, fd ))) + { + info->VolumeSerialNumber = drive->serial; + RtlFreeHeap( GetProcessHeap(), 0, drive ); + } memset( &info->FileId, 0, sizeof(info->FileId) ); *(ULONGLONG *)&info->FileId = st.st_ino; } @@ -3120,125 +3245,6 @@ static NTSTATUS get_device_info( int fd, FILE_FS_DEVICE_INFORMATION *info ) return STATUS_SUCCESS; }
-/* Find a DOS device which can act as the root of "path". - * Similar to find_drive_root(), but returns -1 instead of crossing volumes. */ -static int find_dos_device( const char *path ) -{ - int len = strlen(path); - int drive; - char *buffer; - struct stat st; - struct drive_info info[MAX_DOS_DRIVES]; - dev_t dev_id; - - if (!DIR_get_drives_info( info )) return -1; - - if (stat( path, &st ) < 0) return -1; - dev_id = st.st_dev; - - /* strip off trailing slashes */ - while (len > 1 && path[len - 1] == '/') len--; - - /* make a copy of the path */ - if (!(buffer = RtlAllocateHeap( GetProcessHeap(), 0, len + 1 ))) return -1; - memcpy( buffer, path, len ); - buffer[len] = 0; - - for (;;) - { - if (!stat( buffer, &st ) && S_ISDIR( st.st_mode )) - { - if (st.st_dev != dev_id) break; - - for (drive = 0; drive < MAX_DOS_DRIVES; drive++) - { - if ((info[drive].dev == st.st_dev) && (info[drive].ino == st.st_ino)) - { - if (len == 1) len = 0; /* preserve root slash in returned path */ - TRACE( "%s -> drive %c:, root=%s, name=%s\n", - debugstr_a(path), 'A' + drive, debugstr_a(buffer), debugstr_a(path + len)); - RtlFreeHeap( GetProcessHeap(), 0, buffer ); - return drive; - } - } - } - if (len <= 1) break; /* reached root */ - while (path[len - 1] != '/') len--; - while (path[len - 1] == '/') len--; - buffer[len] = 0; - } - RtlFreeHeap( GetProcessHeap(), 0, buffer ); - return -1; -} - -static struct mountmgr_unix_drive *get_mountmgr_fs_info( HANDLE handle, int fd ) -{ - struct mountmgr_unix_drive *drive; - OBJECT_ATTRIBUTES attr; - UNICODE_STRING string; - ANSI_STRING unix_name; - IO_STATUS_BLOCK io; - HANDLE mountmgr; - NTSTATUS status; - int letter; - - if (server_get_unix_name( handle, &unix_name )) - return NULL; - - letter = find_dos_device( unix_name.Buffer ); - RtlFreeAnsiString( &unix_name ); - - if (!(drive = RtlAllocateHeap( GetProcessHeap(), 0, 1024 ))) - return NULL; - - if (letter == -1) - { - struct stat st; - - if (fstat( fd, &st ) == -1) - { - RtlFreeHeap( GetProcessHeap(), 0, drive ); - return NULL; - } - - drive->unix_dev = st.st_dev; - drive->letter = 0; - } - else - drive->letter = 'a' + letter; - - RtlInitUnicodeString( &string, MOUNTMGR_DEVICE_NAME ); - InitializeObjectAttributes( &attr, &string, 0, NULL, NULL ); - if (NtOpenFile( &mountmgr, GENERIC_READ | SYNCHRONIZE, &attr, &io, - FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_SYNCHRONOUS_IO_NONALERT )) - return NULL; - - status = NtDeviceIoControlFile( mountmgr, NULL, NULL, NULL, &io, IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE, - drive, sizeof(*drive), drive, 1024 ); - if (status == STATUS_BUFFER_OVERFLOW) - { - if (!(drive = RtlReAllocateHeap( GetProcessHeap(), 0, drive, drive->size ))) - { - RtlFreeHeap( GetProcessHeap(), 0, drive ); - NtClose( mountmgr ); - return NULL; - } - status = NtDeviceIoControlFile( mountmgr, NULL, NULL, NULL, &io, IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE, - drive, sizeof(*drive), drive, drive->size ); - } - NtClose( mountmgr ); - - if (status) - { - WARN("failed to retrieve filesystem type from mountmgr, status %#x\n", status); - RtlFreeHeap( GetProcessHeap(), 0, drive ); - return NULL; - } - - return drive; -} - - /****************************************************************************** * NtQueryVolumeInformationFile [NTDLL.@] * ZwQueryVolumeInformationFile [NTDLL.@]