* globals.cc: Improve comment on R/O UNICODE_STRINGs.
* mount.h (class fs_info): Add is_mvfs bit. * mount.cc (fs_info::update): Recognize MVFS remote filesystem. (fillout_mntent): Reorder filesystem checks for speed. Add mvfs, unixfs, and sunwnfs filesystem types. * path.h (class path_conv): Add fs_is_mvfs method. * path.cc (symlink_worker): On MVFS, always create symlinks as Windows shortcuts. Explain why.
This commit is contained in:
Corinna Vinschen
parent
b7735ec72d
commit
0fb0fb8391
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@ -1,3 +1,14 @@
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2009-07-17 Corinna Vinschen <corinna@vinschen.de>
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* globals.cc: Improve comment on R/O UNICODE_STRINGs.
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* mount.h (class fs_info): Add is_mvfs bit.
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* mount.cc (fs_info::update): Recognize MVFS remote filesystem.
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(fillout_mntent): Reorder filesystem checks for speed. Add
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mvfs, unixfs, and sunwnfs filesystem types.
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* path.h (class path_conv): Add fs_is_mvfs method.
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* path.cc (symlink_worker): On MVFS, always create symlinks as
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Windows shortcuts. Explain why.
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2009-07-16 Corinna Vinschen <corinna@vinschen.de>
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* syscalls.cc (unlink_nt): First remove the R/O DOS attribute with
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@ -72,7 +72,13 @@ char NO_COPY almost_null[1];
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char *old_title;
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/* Heavily-used const UNICODE_STRINGs are defined here once. */
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/* Heavily-used const UNICODE_STRINGs are defined here once. The idea is a
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speed improvement by not having to initialize a UNICODE_STRING every time
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we make a string comparison. The strings are not defined as const,
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because the respective NT functions are not taking const arguments
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and doing so here results in lots of extra casts for no good reason.
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Rather, the strings are placed in the R/O section .rdata, so we get
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a SEGV if some code erroneously tries to overwrite these strings. */
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#define _ROU(_s) \
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{ Length: sizeof (_s) - sizeof (WCHAR), \
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MaximumLength: sizeof (_s), \
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@ -240,6 +240,10 @@ fs_info::update (PUNICODE_STRING upath, HANDLE in_vol)
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&& FS_IS_NETAPP_DATAONTAP)
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/* Microsoft NFS needs distinct access methods for metadata. */
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&& !is_nfs (RtlEqualUnicodeString (&fsname, &ro_u_nfs, FALSE))
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/* MVFS == Rational ClearCase remote filesystem. Has a couple of
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drawbacks, like not supporting DOS attributes other than R/O
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and stuff like that. */
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&& !is_mvfs (RtlEqualUnicodePathPrefix (&fsname, &ro_u_mvfs, FALSE))
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/* Known remote file system which can't handle calls to
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NtQueryDirectoryFile(FileIdBothDirectoryInformation) */
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&& !is_unixfs (RtlEqualUnicodeString (&fsname, &ro_u_unixfs, FALSE)))
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@ -1386,22 +1390,28 @@ fillout_mntent (const char *native_path, const char *posix_path, unsigned flags)
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RtlAppendUnicodeToString (&unat, L"\\");
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mntinfo.update (&unat, NULL);
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if (mntinfo.is_samba())
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if (mntinfo.is_ntfs ())
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strcpy (_my_tls.locals.mnt_type, (char *) "ntfs");
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else if (mntinfo.is_fat ())
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strcpy (_my_tls.locals.mnt_type, (char *) "vfat");
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else if (mntinfo.is_samba())
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strcpy (_my_tls.locals.mnt_type, (char *) "smbfs");
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else if (mntinfo.is_nfs ())
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strcpy (_my_tls.locals.mnt_type, (char *) "nfs");
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else if (mntinfo.is_fat ())
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strcpy (_my_tls.locals.mnt_type, (char *) "vfat");
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else if (mntinfo.is_ntfs ())
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strcpy (_my_tls.locals.mnt_type, (char *) "ntfs");
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else if (mntinfo.is_netapp ())
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strcpy (_my_tls.locals.mnt_type, (char *) "netapp");
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else if (mntinfo.is_udf ())
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strcpy (_my_tls.locals.mnt_type, (char *) "udf");
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else if (mntinfo.is_cdrom ())
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strcpy (_my_tls.locals.mnt_type, (char *) "iso9660");
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else if (mntinfo.is_netapp ())
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strcpy (_my_tls.locals.mnt_type, (char *) "netapp");
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else if (mntinfo.is_csc_cache ())
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strcpy (_my_tls.locals.mnt_type, (char *) "csc-cache");
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else if (mntinfo.is_mvfs ())
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strcpy (_my_tls.locals.mnt_type, (char *) "mvfs");
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else if (mntinfo.is_unixfs ())
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strcpy (_my_tls.locals.mnt_type, (char *) "unixfs");
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else if (mntinfo.is_sunwnfs ())
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strcpy (_my_tls.locals.mnt_type, (char *) "sunwnfs");
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else
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strcpy (_my_tls.locals.mnt_type, (char *) "unknown");
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@ -37,6 +37,7 @@ class fs_info
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unsigned is_csc_cache : 1;
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unsigned is_sunwnfs : 1;
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unsigned is_unixfs : 1;
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unsigned is_mvfs : 1;
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};
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unsigned long fs_flags;
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};
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@ -65,6 +66,7 @@ class fs_info
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IMPLEMENT_STATUS_FLAG (bool, is_csc_cache)
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IMPLEMENT_STATUS_FLAG (bool, is_sunwnfs)
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IMPLEMENT_STATUS_FLAG (bool, is_unixfs)
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IMPLEMENT_STATUS_FLAG (bool, is_mvfs)
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ULONG serial_number () const { return sernum; }
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int has_buggy_open () const {return is_sunwnfs ();}
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@ -1367,6 +1367,7 @@ symlink_worker (const char *oldpath, const char *newpath, bool use_winsym,
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HANDLE fh;
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tmp_pathbuf tp;
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unsigned check_opt;
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bool mk_winsym = use_winsym;
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/* POSIX says that empty 'newpath' is invalid input while empty
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'oldpath' is valid -- it's symlink resolver job to verify if
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@ -1397,7 +1398,11 @@ symlink_worker (const char *oldpath, const char *newpath, bool use_winsym,
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check_opt = PC_SYM_NOFOLLOW | PC_POSIX | (isdevice ? PC_NOWARN : 0);
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/* We need the normalized full path below. */
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win32_newpath.check (newpath, check_opt, stat_suffixes);
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if (use_winsym && !win32_newpath.exists ()
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/* MVFS doesn't handle the SYSTEM DOS attribute, but it handles the R/O
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attribute. Therefore we create symlinks on MVFS always as shortcuts. */
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mk_winsym |= win32_newpath.fs_is_mvfs ();
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if (mk_winsym && !win32_newpath.exists ()
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&& (isdevice || !win32_newpath.fs_is_nfs ()))
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{
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char *newplnk = tp.c_get ();
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@ -1449,7 +1454,7 @@ symlink_worker (const char *oldpath, const char *newpath, bool use_winsym,
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goto done;
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}
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if (use_winsym)
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if (mk_winsym)
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{
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ITEMIDLIST *pidl = NULL;
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size_t full_len = 0;
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@ -1634,7 +1639,7 @@ symlink_worker (const char *oldpath, const char *newpath, bool use_winsym,
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status = NtWriteFile (fh, NULL, NULL, NULL, &io, buf, cp - buf, NULL, NULL);
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if (NT_SUCCESS (status) && io.Information == (ULONG) (cp - buf))
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{
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status = NtSetAttributesFile (fh, use_winsym ? FILE_ATTRIBUTE_READONLY
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status = NtSetAttributesFile (fh, mk_winsym ? FILE_ATTRIBUTE_READONLY
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: FILE_ATTRIBUTE_SYSTEM);
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if (!NT_SUCCESS (status))
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debug_printf ("Setting attributes failed, status = %p", status);
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@ -1653,7 +1658,7 @@ symlink_worker (const char *oldpath, const char *newpath, bool use_winsym,
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done:
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syscall_printf ("%d = symlink_worker (%s, %s, %d, %d)", res, oldpath,
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newpath, use_winsym, isdevice);
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newpath, mk_winsym, isdevice);
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return res;
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}
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@ -231,6 +231,7 @@ class path_conv
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bool fs_is_nfs () const {return fs.is_nfs ();}
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bool fs_is_netapp () const {return fs.is_netapp ();}
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bool fs_is_cdrom () const {return fs.is_cdrom ();}
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bool fs_is_mvfs () const {return fs.is_mvfs ();}
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ULONG fs_serial_number () const {return fs.serial_number ();}
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void set_path (const char *p) {strcpy (path, p);}
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void fillin (HANDLE h);
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