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Together with the "dosmode | FILE_ATTRIBUTE_ARCHIVE" a line below this
is more obvious to me.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
In all places where we access or modify a file or it's associated metadata, we
use fsp_get_io_fd() to fetch the low-level fd from the fsp. This ensures we
don't accidentally use a pathref fsp where the fd would be opened as root on
systems lacking O_PATH.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
I checked all callers of SMB_VFS_PWRITE[_SEND](),
all callers of SMB_VFS_PREAD[_SEND]() and also
places where we append to the file and allocate
more space.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14361
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
They should never touch the SMB_VFS layer
and they never trigger an DISK_FULL error.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14361
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Let delayed update handler also update on-disk timestamps by calling
trigger_write_time_update_immediate().
trigger_write_time_update_immediate() sets fsp->update_write_time_on_close to
false which prevents updating the write-time on close if there was ever only one
write to the file.
Besides resetting fsp->update_write_time_on_close and setting the on-disk timestamps
trigger_write_time_update_immediate() takes the same steps as the removed code.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14320
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Mar 19 03:05:40 UTC 2020 on sn-devel-184
Preperatory change: the next commit will reset fsp->update_write_time_on_close
in the event handler, so this change ensures it gets set again for any
subsequent write.
This will NOT always result in a write-time update because
trigger_write_time_update() has its own only-once logic using the internal
variable fsp->update_write_time_triggered.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14320
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This stat dates back to d03453864a where the call
to trigger_write_time_update() had been to the file IO codepath. It was present
there for other reasons: to setup the write-cache based on the file's size.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14320
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This implements two core changes:
* use NTTIME instead of struct timespec at the database layer
* use struct timespec { .tv_nsec = SAMBA_UTIME_OMIT } as special sentinel
value in smbd when processing timestamps
Using NTTIME at the database layer is only done to avoid storing the special
struct timespec sentinel values on disk. Instead, with NTTIME the sentinel value
for an "unset" timestamp is just 0 on-disk.
The NTTIME value of 0 gets translated by nt_time_to_full_timespec() to the
struct timespec sentinel value { .tv_nsec = SAMBA_UTIME_OMIT }.
The function is_omit_timespec() can be used to check this.
Beside nt_time_to_full_timespec(), there are various other new time conversion
functions with *full* in their name that can be used to safely convert between
different types with the changed sentinel value.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=7771
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Since this was written, our write path has changed significantly. In
particular we have gained very flexible support for async I/O, with the
linux io_uring in the pipeline. Caching stuff in main memory and then
doing a blocking pwrite nowadays does not belong into the core smbd
code. If someone wants it back, it should be doable in a VFS module.
Removes: "write cache size" parameter.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Nov 13 00:20:55 UTC 2019 on sn-devel-184
Both functions do the same, they differ just in the type of the returned result.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14121
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
It's confusing to call update_write_time_handler() from anywhere,
it should only be called from within the event loop when the
timer expires.
This makes it more obvious that fsp_flush_write_time_update()
doesn't really need an tevent context argument.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
All SMB1/2/3 offsets over the wire are absolute.
The only caller with offset == -1 is on a print-spool file
in reply_printwrite(), and write_file() redirects this
to print_spool_write(), which correctly handles the -1.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
No code change intended. This file just looked to hard to read.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
This is in preperation of a more fine grained control of POSIX behaviour
in the SMB and VFS layers.
Inititally we use an uint8_t for the flags bitmap and add a define
posix_flags as posix_open in order to avoid breaking the VFS ABI.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11065
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
In order to have useful profiling counters should never be decremented.
We need a separate counter for deallocation events.
The current value can be calculated by allocations - deallocations.
We also use better names and avoid having an array for the flush reasons.
This will simplify further profiling improvements a lot.
The value writecache_num_write_caches (this was similar to writecache_allocations)
is replaced by writecache_cached_writes, which counts the amount of writes which
were completely handled by the cache.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
I would like to have the freedom to play with the profiling implementation.
This is kindof in the way.
This code is from pre-SVN days:
> commit 7914e9351a
> Author: Jeremy Allison <jra@samba.org>
> AuthorDate: Thu Oct 5 18:50:18 2000 +0000
> Commit: Jeremy Allison <jra@samba.org>
> CommitDate: Thu Oct 5 18:50:18 2000 +0000
>
> Herb's fixes for profiling & compiler warnings.
> Jeremy.
Herb, please speak up quickly if you still need this :-)
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The DO_PROFILE_INC thingies already #define to nothing without
WITH_PROFILE, and any sane compiler will just not compile the if-condition
if there is no body to be executed.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Pair-Programmed-With: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Fri Jun 8 18:08:09 CEST 2012 on sn-devel-104
Now that we always require a 64 bit off_t, we no longer need SMB_OFF_T.
Andrew Bartlett
Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Fri Apr 6 01:47:43 CEST 2012 on sn-devel-104
Several places want "microseconds from current time", and several were
simply handing "usecs" values which could be over a million.
Using a helper to do this is safer and more readable.
I didn't replace any obviously correct callers (ie. constants).
I also renamed wait_nsec in source3/lib/util_sock.c; it's actually
microseconds not nanoseconds (introduced with this code in Volker's
19b783cc Async wrapper for open_socket_out_send/recv).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This has been a wrapper around server_event_context() for some time
now, and removing this from dummmysmbd.c assists with library
dependencies.
Andrew Bartlett
strict allocation on sparse files. Files opened as POSIX opens are always
sparse.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Tue Dec 21 04:12:22 CET 2010 on sn-devel-104
