fuse-lite announces a FUSE_VERSION which may not always match the exact
capabilities of the library. Hence we add a special case for 'ioctl',
which we know exists in fuse-lite regardless of the version number
published.
The capability actually appeared in FUSE 2.9, not 2.8. However in order
to maintain similarity to earlier #ifdef:s, we simpy check if
FUSE_CAP_IOCTL_DIR is defined rather than checking the FUSE version.
The variable 'res' was never initialized if the #ifdef condition
'!KERNELPERMS | (POSIXACLS & !KERNELACLS)' evaluated to true and there
was an error allocating memory for 'value'.
fstrim(8) discards unused blocks on a mounted filesystem. It is useful for
solid-state drives (SSDs) and thinly-provisioned storage.
Only trimming the full device (with no option) is supported.
Contributed by Richard W.M. Jones
When Posix ACLs are used, the umask is ignored and the initial permissions
of created files are taken for the parent directory. However the umask
should still be used when the Posix ACLs are not enabled in the mount
options.
When permissions are used, umask(2) is supposed to be active and the
umask mount option is supposed to be ignored, but it was still wrongly
applied. This caused permission restrictions when an external disk was
automatically mounted with standard options.
chmod/chown/setfacl can only define permissions according to Linux rules
with references to owner and group. Windows rules are more general and
propagated through inheritance, and chmod/chown/setfacl may create unwanted
deviations from these rules. Ignoring them prevents text editors from
creating such deviations when updating a file and creating a backup one.
If a readdir operation returned a file name larger than 255 bytes,
Solaris/Illumos would return I/O error from the readdir operation.
Fixed by truncating the file name returned in the readdir operation.
Windows applies legacy restrictions to file names, so when the option
windows_names is applied, reject the same reserved names, which are
CON, PRN, AUX, NUL, COM1..COM9, and LPT1..LPT9
Reworked the delayed deletion of open files in lowntfs-3g to cope with
situations where a file was opened multiple times. In such circumstances,
multiple ghost names are created, to avoid having to check the full list
when opening and closing, which are much more frequent than deleting.
The MS_* flags originated from system constants. However the flags
passed to ntfs_mount were really unrelated to the system constants and
many new MS_* flags had to be introduced as different features were
added to the library. Those flags had no counterparts in any system
APIs, so using the same naming scheme is inappropriate.
Instead, let's namespace these flags similarly to what has already been
done in ntfsprogs/libntfs earlier. This avoids any possible conflicts
with system constants.
The values of the flags themselves are kept the same as earlier, so
backward compatibility is retained.
External devices, such as USB keys, may have a switch to make them
temporarily unwriteable. When such a device is plugged in, mount it
as read-only by default.
The type of special files (symlinks, fifos, etc.) was not returned in
readdir() and they appeared wrongly in the field d_type of "struct dirent".
This prevented some applications which relied on d_type (which does
not exist in Solaris) from navigating in an NTFS tree.
Special files (FIFOs, SOCKETs, etc.) are not allowed to have user extended
attributes. When listing their extended attributes, return none without
checking whether the calling process is allowed to access these files.
So far the set-group-id flag could be set in a chmod. This patch enables
the inheritance of the group to files and subdirectories, and the
inheritance of the set-group-id flag to subdirectories.
The suggestion to use option remove_hiberfile was displayed in the
standard help and when a volume is found dirty. As this option may
lead to loss of data, only mention it in the manual, with a proper
warning.
The option delay_mtime avoid updating the mtime of a file after each
individual updating. With this patch, the frequency of the update can
be adjusted to needs (default 60s). This is mainly useful for big files
which are kept open for a long period (file system images, virtual
computers, etc.)
The special tests for accepting ftruncate(2) and access(W_OK) applied
to a file being created read-only have been implemented in the fuse
kernel module, so there is no need to duplicate them in the file system.
On OpenIndiana the fuse kernel module does not prevent unlink(2)
from deleting directories, nor prevent rmdir(2) from deleting files,
so this has to be done in the lowntfs-3g driver.
When a file is created with no write permissions, ftruncate and
access(W_OK) should be allowed, but this check has to be made by the
file system on OpenIndiana.
This patch is not active on Linux (#ifdef'ed)
When a user queries an extended attribute in the trusted namespace,
the traditional error return was EPERM. This has been recently changed
to ENODATA. See https://lkml.org/lkml/2011/5/27/199
With the default mount options, compression of new files are now done
if the parent directory is marked for compression. The mount option
"compression" is not needed any more, but the option "nocompression"
can be used to disable compression of new files.
The default option also applies to applications using libntfs-3g with
no mount command.
This patch avoid updating the time stamps whenever a file is modified,
by delaying the time stamps updating until the file is closed.
This is mostly useful when the ntfs file system hosts another loop-monted
file system to avoid frequent updates of the time stamps in the outer
file system.
For some reason, when the monted device is "/dev/mapper/*", a record
in the form "/dev/dm-*" ends up in /etc/mtab and the device cannot be
unmounted.
The reason is unclear, the /dev/mapper name is not a symlink, and the
function doing the name change is not known. No detailed feedback from
the users having met the issue.
The patch changes the name back to the /dev/mapper name after realpath()
is called, and, if there is an actual change, both the name passed to
ntfs-3g and the one passed to fuse and mount are logged in the hope
of getting a clue about what is happening.
But ntfs-3g is probably not the right place for a fix.
Erik Larsson
Jean-Pierre André
Jean-Pierre André
Szaka