The caller assumes that an unimplemented vfunc means that copying is
unsupported (and falls back to its internal copy implementation), so
there’s no point in implementing the vfunc just to unconditionally
return `G_IO_ERROR_NOT_SUPPORTED`.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Rather than defining a vfunc which only ever returns
`G_IO_ERROR_NOT_SUPPORTED`, just don’t define the vfunc at all. The
caller in `GFile` interprets this as symlinks not being supported — so
we get the same behaviour, but without spending a vfunc call on it.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Currently, readlink() is used only 12 times when expanding symlinks.
However, kernel uses 40 for this purpose and it is defined as MAXSYMLINKS.
Use that constant if available, or 40. See:
https://github.com/torvalds/linux/include/linux/namei.h.
find_mountpoint_for() uses current file in case of error, because
get_parent() returns NULL for error, but also if parent doesn't exist.
Return "." from get_parent() if parent doesn't exist in order to
differentiate the error state.
G_FILE_ATTRIBUTE_ACCESS_CAN_TRASH can be set to a wrong value if
its parent dir is a symlink. This is because the find_mountpoint_for()
function tries to find mountpoint for a filepath and expands symlinks
only in parent dirs. But in this case the path is already parent dir
and needs to be expanded first...
Closes: https://gitlab.gnome.org/GNOME/glib/issues/1522
Previously, glocalfile.c would not set file system metadata for
the free/used key for file systems which reported 0 free space. This is
because some file systems don’t set that metadata when you call
statfs(), so we can’t reliably report it. However, some do, and they
can legitimately set f_bavail and f_bfree to 0 if the file system is
full.
In order to avoid that, always set the file system metadata unless the
file system is FUSE or ncpfs.
This is a partial revert of commit 0b9f24c1e1: instead of the changes
made in that commit, I think we should maintain a blacklist of file
systems which are known to not correctly report free space.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
https://gitlab.gnome.org/GNOME/glib/issues/328
In order to determine whether to trash a file to the home directory, we
compare its st_dev to our home directory's st_dev field.
This is the wrong thing to do on overlayfs when deleting files, because
st_dev contains the ID of the filesystem providing the file (which can
be the lower or upper filesystem), but directories always return the ID
of the overlayfs. Thus the comparison fails and we are unable to trash
the file.
Fix this by checking st_dev of the parent directory when we are deleting
a file.
Also adjust `test_trash_not_supported` for this - make its st_dev check
look at the parent directory's `st_dev` rather than the temporary file's
own.
Fixes#1027.
Use either g_get_real_time() or g_date_time_new_now_local(). This means
we don’t need to worry about time_t being 32b in future (the year 2038
problem), and it makes the need for error handling a bit more explicit.
Improve the error handling in several cases.
Based on a patch by Niels De Graef
(https://gitlab.gnome.org/GNOME/glib/merge_requests/142).
Signed-off-by: Philip Withnall <withnall@endlessm.com>
https://gitlab.gnome.org/GNOME/glib/issues/1402
G_IO_ERROR_NOT_SUPPORTED is used as parameter for g_set_io_error(),
however, errno is expected instead and thus error code is set to 0,
which is wrong. Let's use ENOTSUP instead.
To be honest, I am not sure why, but in some special environments (e.g.
our CI integration) can happen, that file device number is different from
parent device number. Return "Unable to find or create trash directory for
%s" error from g_local_file_trash() in that case and also set
G_FILE_ATTRIBUTE_ACCESS_CAN_TRASH appropriately.
Change G_FILE_ATTRIBUTE_ACCESS_CAN_TRASH logic to be consistent
with recent g_local_file_trash changes, i.e. set this to FALSE for
locations on system-internal mounts.
https://gitlab.gnome.org/GNOME/glib/issues/251
New bugs appears periodically in nautilus/gvfs/glib components that not
all trashed files are shown in trash:///. It used to be problem mostly
for "bind mounts" and btrfs subvolumes only. Currently, it is also
problem for nfs, cifs and other filesystems, which have been recently
added by commmit 0d69462f on the list of system internal filesystems.
This happens because the trash backend doesn't monitor files on system
internal mounts. Such behavior is not against the trash-spec, however,
we should be consistent within GNOME.
This behavior has the nice side-effect that it solves issues with hangs
on network filesystems: https://gitlab.gnome.org/GNOME/glib/issues/605,
because those are currently on the system internal filesystem list.
https://gitlab.gnome.org/GNOME/glib/issues/251
Change G_FILE_ATTRIBUTE_ACCESS_CAN_TRASH logic to be consistent
with recent g_local_file_trash changes, i.e. set this to FALSE for
locations on system-internal mounts.
https://gitlab.gnome.org/GNOME/glib/issues/251
New bugs appears periodically in nautilus/gvfs/glib components that not
all trashed files are shown in trash:///. It used to be problem mostly
for "bind mounts" and btrfs subvolumes only. Currently, it is also
problem for nfs, cifs and other filesystems, which have been recently
added by commmit 0d69462f on the list of system internal filesystems.
This happens because the trash backend doesn't monitor files on system
internal mounts. Such behavior is not against the trash-spec, however,
we should be consistent within GNOME.
This behavior has the nice side-effect that it solves issues with hangs
on network filesystems: https://gitlab.gnome.org/GNOME/glib/issues/605,
because those are currently on the system internal filesystem list.
https://gitlab.gnome.org/GNOME/glib/issues/251
Fix various warnings regarding unused variables, duplicated
branches etc by adjusting the ifdeffery and some missing casts.
gnulib triggers -Wduplicated-branches in one of the copied files,
disable as that just makes updating the code harder.
The warning indicating missing features are made none fatal through
pragmas. They still show but don't abort the build.
https://bugzilla.gnome.org/show_bug.cgi?id=793729
Add filesystem magic numbers found in statfs(2) manual page. Filesystem
magic numbers that are not available from the manual page are copied
from Linux source code.
configfs is found in fs/configfs/mount.c, macro CONFIGFS_MAGIC.
fusectl is found in fs/fuse/control.c, macro FUSE_CTL_SUPER_MAGIC.
rpc_pipefs is found in net/sunrpc/rpc_pipe.c, macro RPCAUTH_GSSMAGIC.
https://bugzilla.gnome.org/show_bug.cgi?id=754634
fstype is a const char*, and is passed to
g_file_info_set_attribute_string(), which takes a copy of it. There’s no
need to g_strdup() the FS type from various statfs/statvfs buffers
beforehand, given that the buffers are valid for the duration of this
function.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
https://bugzilla.gnome.org/show_bug.cgi?id=679347
This commit adds new W32-only functions to gstdio.c,
and a new header file, gstdioprivate.h.
These functions are:
g_win32_stat_utf8()
g_win32_lstat_utf8()
g_win32_fstat()
and they fill a private structure, GWin32PrivateStat,
which has all the fields that normal stat has, as well as some
extras.
These functions are then used throughout glib and gio to get better
data about the system. Specifically:
* Full, 64-bit size, guaranteed (g_stat() is forced to use 32-bit st_size)
* Full, 64-bit file identifier (st_ino is 0 when normal stat() is used, and still is)
* W32 File attributes (which stat() doesn't report); in particular, this allows
symlinks to be correctly identified
* Full, 64-bit time, guaranteed (g_stat() uses 32-bit st_*time on 32-bit Windows)
* Allocated file size (as a W32 replacement for the missing st_blocks)
st_mode remains unchanged (thus, no S_ISLNK), so when these are given back to
glib users (via g_stat(), for example, which is now implemented by calling g_win32_stat_utf8),
this field does not contain anything unexpected.
g_lstat() now calls g_win32_lstat_utf8(), which works on symlinks the way it's supposed to.
Also adds the g_win32_readlink_utf8() function, which behaves like readlink()
(including its inability to return 0-terminated strings and inability to say how large
the output buffer should be; these limitations are purely for compatibility with
existing glib code).
Thus, symlink support should now be much better, although far from being complete.
A new W32-only test in gio/tests/file.c highlights the following features:
* allocated size
* 64-bit time
* unique file IDs
https://bugzilla.gnome.org/show_bug.cgi?id=788180
ssize_t is supported widely, but not universally, so use gssize instead.
Currently only one piece of code actually *needs* this change to be compilable
with MSVC, the rest are mostly in *nix parts of the code, but these are changed
too, for symmetry.
https://bugzilla.gnome.org/show_bug.cgi?id=788180
Prevent the situation where errno is set by function A, then function B
is called (which is typically _(), but could be anything else) and it
overwrites errno, then errno is checked by the caller.
errno is a horrific API, and we need to be careful to save its value as
soon as a function call (which might set it) returns. i.e. Follow the
pattern:
int errsv, ret;
ret = some_call_which_might_set_errno ();
errsv = errno;
if (ret < 0)
puts (strerror (errsv));
This patch implements that pattern throughout GLib. There might be a few
places in the test code which still use errno directly. They should be
ported as necessary. It doesn’t modify all the call sites like this:
if (some_call_which_might_set_errno () && errno == ESOMETHING)
since the refactoring involved is probably more harmful than beneficial
there. It does, however, refactor other call sites regardless of whether
they were originally buggy.
https://bugzilla.gnome.org/show_bug.cgi?id=785577
GLib has g_unix_mount_at (mount_path) already, let's add g_unix_mount_for
(file_path) for whatever path. GLib already contains some private code
for such task. Let's make this code public. This functionality is needed
by GVfs (see Bug 771431) in order to avoid copy-and-pasting.
https://bugzilla.gnome.org/show_bug.cgi?id=772160
Include the filename for the file in question in many of the
error messages in glocalfile.c. This is useful information when
diagnosing such errors, so make it easily available.
http://bugzilla.gnome.org/show_bug.cgi?id=754012
Add filesystem attribute to detect remote filesystems in order to
replace hardcoded filesystem types in GtkFileSystem. Set this attribute
also for GLocalFile appropriately.
Bump version to 2.49.3, so that early adopters of new API have a version
number to target.
This was confusing some static analysis. Through canonicalize_filename()
at construction time, we guaranteed that ->filename is canonical and
absolute, so g_path_skip_root() should never fail.
https://bugzilla.gnome.org/show_bug.cgi?id=731988
Commit 8ece2de964 transplanted a block of
code that contained an early-exit-on-error case which freed several
variables.
Because of the move, the normal-path unconditional free of one of these
variables is now above this early exit case, so if this block is hit, it
will now be a double-free.
Remove that.
https://bugzilla.gnome.org/show_bug.cgi?id=757693
Recent changes to file monitors removed the delay before events were
reported. Among other things, this caused the trash backend of gvfs to
notice trashed files sooner than before.
On noticing trashed files, the backend tries to read the info file to
discover (among other things) the original location of the file.
Unfortunately, g_local_file_trash() does a strange dance when trashing a
file. It does a loop of open(O_EXCL) in order to file an empty filename
in the trash to write an info file to, trashes the file, and only then
writes the contents of the info file. This means that at the time the
file is moved to the trash, the info file is an empty stub.
Change the order so that we write out the actual content of the info
file first. If the actual trash files then we will unlink the info file
anyway.
https://bugzilla.gnome.org/show_bug.cgi?id=749314
_wstat32i64() doesn't exist in msvcrt.dll. This doesn't cause a problem
on 32-bit Windows because mingw-w64 #defines _wstat32i64 to _wstati64,
but on 64-bit Windows we get a link error.
In addition, _wstat32i64() takes a struct _stat32i64 *, but
GLocalFileStat is #defined to struct _stati64, which is not the same
type on 64-bit Windows.
Fix by using _wstati64().
https://bugzilla.gnome.org/show_bug.cgi?id=749161
Remove all event merging and dispatch logic from GFileMonitor. The only
implementation of GFileMonitor outside of glib is in gvfs and it already
does these things properly.
Get rid of GLocalDirectoryMonitor. We will use a single class,
GLocalFileMonitor, for both directory and file monitoring. This will
prevent every single backend from having to create two objects
separately (eg: ginotifydirectorymonitor.c and ginotifyfilemonitor.c).
Introduce GFileMonitorSource as a thread-safe cross-context dispatch
mechanism. Put it in GLocalFileMonitor. All backends will be expected
to dispatch via the source and not touch the GFileMonitor object at all
from the worker thread.
Remove all construct properties from GLocalFileMonitor and remove the
"context" construct property from GFileMonitor. All backends must now
get the information about what file to monitor from the ->start() call
which is mandatory to implement.
Remove the implementation of rate limiting in GFileMonitor and add an
implementation in GLocalFileMonitor. gvfs never did anything with this
anyway, but if it wanted to, it would have to implement it for itself.
This was done in order to get the rate_limit field into the
GFileMonitorSource so that it could be safely accessed from the worker
thread.
Expose g_local_file_is_remote() internally for NFS detection.
With the "is_remote" functionality exposed, we can now move all
functions for creating local file monitors to a proper location in
glocalfilemonitor.c
Port the inotify backend to adjust to the changes above. None of the
other backends are ported yet. Those will come in future commits.
Add a new internal constructor for GLocalFile (which itself is private).
This new constructor allows creating a GLocalFile from a dirname and a
basename, assuming that the dirname is already in canonical form and the
basename is a regular basename.
This will be used for creating GLocalFile instances from the file
monitoring code (for signal emissions).
glocalfile.c: In function 'g_local_file_measure_size_of_file':
glocalfile.c:2654:3: warning: passing argument 2 of 'g_lstat' from
incompatible pointer type [enabled by default]
if (g_lstat (name->data, &buf) != 0)
^
In file included from glocalfile.c:68:0:
../glib/gstdio.h:135:5: note: expected 'struct GStatBuf *' but argument
is of type 'struct _stati64 *'
https://bugzilla.gnome.org/show_bug.cgi?id=711547
In Windows development environments that have it, <unistd.h> is mostly
just a wrapper around several other native headers (in particular,
<io.h>, which contains read(), close(), etc, and <process.h>, which
contains getpid()). But given that some Windows dev environments don't
have <unistd.h>, everything that uses those functions on Windows
already needed to include the correct Windows header as well, and so
there is never any point to including <unistd.h> on Windows.
Also, remove some <unistd.h> includes (and a few others) that were
unnecessary even on unix.
https://bugzilla.gnome.org/show_bug.cgi?id=710519
Assume unix platforms support the original POSIX.1 standard.
Specifically, assume that if G_OS_UNIX, then we have chown(),
getcwd(), getgrgid(), getpwuid(), link(), <grp.h>, <pwd.h>,
<sys/types.h>, <sys/uio.h>, <sys/wait.h>, and <unistd.h>.
Additionally, since all versions of Windows that we care about also
have <sys/types.h>, we can remove HAVE_SYS_TYPES_H checks everywhere.
Also remove one include of <sys/times.h>, and the corresponding
configure check, since the include is not currently needed (and may
always have just been a typo for <sys/time.h>).
https://bugzilla.gnome.org/show_bug.cgi?id=710519
Add a convenient and race-free method of watching local files from the
GLib worker thread.
Without this, the race-free way to create a monitor that dispatches
events to the worker thread looked something like this:
- dispatch an idle to the worker thread
- from the idle, create the monitor and connect signals
- from the original thread, wait (on a cond?) until the worker thread
has finished setting up the monitor
- read the file that you were monitoring
which is just ridiculously complicated...
To use the new API:
monitor = g_local_file_monitor_new_in_worker ("/path/to/some/file",
G_FILE_MONITOR_NONE,
&error);
g_assert_no_error (error);
g_signal_connect (monitor, "changed", G_CALLBACK (callback), NULL);
g_local_file_monitor_start (monitor);
'callback' will run from the GLib worker thread.
This is the reason that the start() call was introduced in the previous
commit. The backends that don't use the start() call will have a very
thin race between creating the monitor and connecting the signal, but
hopefully they will be fixed soon.
These new APIs will be used (at least) from gdesktopappinfo to watch for
changes in the desktop file directories.
https://bugzilla.gnome.org/show_bug.cgi?id=704887
It turns out that although dirent is available on mingw32 (where the
code was originally tested), it is not usable from MSVC.
Avoid portability problems by just using GDir.
Also, be careful about ensuring that we utf8-format filenames in our
error messages, and leave out the "file://" component since the strings
we're displaying are not URIs (and we don't want to make them URIs since
the extra escaping would reduce legibility).
Thanks to Chun-wei Fan <fanchunwei@src.gnome.org> for portions of this
patch and for reviews.
https://bugzilla.gnome.org/show_bug.cgi?id=707787
