RGBCube/serenity
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2399 commits 1 branch 0 tags 230 MiB
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976 commits

Author SHA1 Message Date
Andreas Kling
c3b7ace3e0 Kernel: Assign Lock names in class member initializers. 2019-05-02 03:28:20 +02:00
Mustafa Ali CAN
9fa8324f7a Fix jittery mouse 2019-05-01 21:54:41 +02:00
Andreas Kling
28244039a5 Kernel: Don't symbolicate symbol+offset for obvious non-kernel addresses. 2019-04-30 14:47:22 +02:00
Andreas Kling
14ac77131b Kernel: The exit_thread() syscall should unlock the big lock. 
Since exit_thread() never returns, it can't rely on the syscall trap handler
to unlock the big lock before returning.
 2019-04-29 15:56:25 +02:00
Andreas Kling
d07be1087a Kernel+LibC: Add exit_thread() syscall. 2019-04-29 15:17:20 +02:00
Andreas Kling
8cbb7f101f Kernel: Have File virtuals take a FileDescriptor& rather than a Process&. 
This will allow us to implement different behaviors depending on the role
of the descriptor a File is being accessed through.
 2019-04-29 13:58:40 +02:00
Andreas Kling
0a0d739e98 Kernel: Make FIFO inherit from File. 2019-04-29 04:55:54 +02:00
Andreas Kling
475a17fa4b VFS: Also respect the sticky bit of the new parent in rename(). 
Obviously we should not allow overwriting someone else's files in a sticky
directory either.
 2019-04-28 23:34:33 +02:00
Andreas Kling
e4eca17848 VFS: Implement sticky bit behavior for rename() and unlink(). 
Removing entries from a sticky directory is only allowed when you are either
the owner of the entry, or the superuser. :^)
 2019-04-28 22:54:30 +02:00
Andreas Kling
a104d7cc93 Kernel: Make SharedMemory inherit from File. 2019-04-28 22:31:31 +02:00
Andreas Kling
a6d407fec5 Ext2FS: Put some debug spam behind EXT2_DEBUG. 2019-04-28 22:14:37 +02:00
Andreas Kling
899f6a5de2 Ext2FS: Support shrinking inode to a smaller size. 
Factor out inode resizing into a separate Ext2FSInode::resize() function.
This is then called both from write_bytes() and truncate().
This patch finally implements freeing of blocks when an inode shrinks.
 2019-04-28 22:07:25 +02:00
Andreas Kling
89df887e1f Kernel: Dump backtrace on user process page fault. 2019-04-28 22:05:13 +02:00
Andreas Kling
c91b0d6b5f FileDescriptor: Let TTY handle its own absolute_path(). 2019-04-28 15:09:23 +02:00
Andreas Kling
e886337a67 Kernel: Make ProcessTracer inherit from File. 2019-04-28 15:02:55 +02:00
Andreas Kling
7ec1f6ab3c Kernel: Add File, a base class for anything that a FileDescriptor can wrap. 
FileDescriptor is getting out of control, and the layering isn't quite right
so let's make a File class that everything can inherit from. Then we can
stop worrying about all kinds of specifics in FileDescriptor.
 2019-04-28 14:53:50 +02:00
Andreas Kling
d32d85e133 Kernel: Fix rename() sometimes failing to move within the same directory. 
It was wrong to do a reverse name lookup on the old inode after adding
a new name for it, since we might very well get the new inode instead of
the old one, depending on hash table layouts.
 2019-04-27 22:38:51 +02:00
Andreas Kling
52139a2392 DiskBackedFS: Flush write cache if it reaches 32 entries before sync. 
This is just to avoid chewing through all of the kernel memory. There is a
lot of room for improvement here, and 32 is just a number from the place
where numbers come from.
 2019-04-27 17:30:32 +02:00
Andreas Kling
dde8d90747 Ext2FS: Fix accidental zero-fill when appending to a file. 
We were using the old file size, rather than the new file size, to determine
how much to zero-fill in the last block of a file.
 2019-04-27 17:14:27 +02:00
Andreas Kling
679ac386eb Kernel: "Succeed" quietly for zero-length read() and write(). 2019-04-27 16:17:24 +02:00
Andreas Kling
490e89e240 LibC: Add execvpe() and make execvp()'ed children inherit environment. 2019-04-26 03:16:26 +02:00
Andreas Kling
1163e0a030 Kernel: Don't count kfree(nullptr) as a call to kfree(). 
This was causing the kmalloc/kfree call delta to accumulate errors.
 2019-04-25 23:18:11 +02:00
Andreas Kling
44673c4f3b Kernel: Add a write cache to DiskBackedFS. 
This way you can spam small write()s on a file without the kernel writing
to disk every single time. Flushes are included in the FS::sync() operation
and will get triggered regularly by syncd. :^)
 2019-04-25 22:05:53 +02:00
Andreas Kling
e0cdc5db0d Ext2FS: Reduce debug spam in block allocation. 2019-04-25 22:05:32 +02:00
Andreas Kling
6c950f8f83 Kernel: Dump stack trace when kmalloc() fails. 2019-04-25 15:58:49 +02:00
Andreas Kling
d5578826af Kernel: Make it possible to look up FIFO's by ID. 
This will be useful when implementing the /proc/PID/fd/N links where N is
a file descriptor referring to a FIFO.
 2019-04-25 13:53:24 +02:00
Andreas Kling
16f6a3af3c Allow passing extra args to qemu via a SERENITY_EXTRA_QEMU_ARGS env var. 2019-04-24 21:06:16 +02:00
Andreas Kling
d7cf841d3d Kernel: Add a comment block about the Device class. 2019-04-24 02:37:57 +02:00
Andreas Kling
ca9ed13643 Kernel: Simplify Device::open(). 2019-04-24 02:20:14 +02:00
Andreas Kling
c5c4e54a67 Kernel: Process destruction should destroy all child threads. 
We were only destroying the main thread when a process died, leaving any
secondary threads around. They couldn't run, but because they were still
in the global thread list, strange things could happen since they had some
now-stale pointers to their old process.
 2019-04-23 22:17:01 +02:00
Andreas Kling
0c898e3c2c Put assertions behind a DEBUG flag to make it easy to build without them. 2019-04-23 21:52:02 +02:00
Andreas Kling
f3754b8429 Build: Pass --gc-sections to the linker in all builds. 
This removes unused sections from the output and reduces the binary size
of everything we compile.
 2019-04-23 21:37:10 +02:00
Andreas Kling
f042b3adeb Kernel: Make the right shift key work. 
I never realized the right shift key wasn't hooked up since my left pinky
always hovers over the left shift key, ready to rock.
 2019-04-23 20:47:45 +02:00
Andreas Kling
fd500c79d6 Ext2S: Fix off-by-one error in block allocation. 2019-04-23 16:38:45 +02:00
Andreas Kling
b041fc57de Ext2FS: Bitmaps aren't always at full capacity. 
Block bitmaps only have (blocks_per_group) entries, while inode bitmaps
only have (inodes_per_group) entries.
 2019-04-23 16:21:07 +02:00
Andreas Kling
14ceabeca8 Ext2FS: More bitmap misunderstanding cleanups. 
Inode bitmaps are also only ever one block.
 2019-04-23 15:07:07 +02:00
Andreas Kling
1bf37db9a9 Ext2FS: Simplify block bitmap stuff. 
Block bitmaps are only ever one block in size. I don't know why I thought
otherwise, but use this info to simplify the code. :^)
 2019-04-23 14:51:47 +02:00
Andreas Kling
58240fdb33 Do a pass of compiler warning fixes. 
This is really making me question not using 64-bit integers more.
 2019-04-23 13:00:53 +02:00
Andreas Kling
243e1d8462 Kernel: Use rep insw/outsw for IDE transfers. 
There are much faster ways to do disk transfers, but I'm not implementing
those today. In the meantime, this is slightly nicer. :^)
 2019-04-23 03:45:55 +02:00
Andreas Kling
37498c1566 Kernel: Send IDE flush command after writing sectors. 2019-04-23 03:16:47 +02:00
Andreas Kling
11e7ce60e5 Kernel: Use IDE LBA addressing instead of the long-obsolete C/H/S. 2019-04-23 02:26:51 +02:00
Andreas Kling
2d7cad6a16 Kernel: Make sure we don't use any FPU/MMX/SSE instructions. 2019-04-22 23:38:33 +02:00
Andreas Kling
5c68929aa1 Kernel: Add a systrace() syscall and implement /bin/strace using it. 
Calling systrace(pid) gives you a file descriptor with a stream of the
syscalls made by a peer process. The process must be owned by the same
UID who calls systrace(). :^)
 2019-04-22 18:44:45 +02:00
Andreas Kling
6693cfb26a Kernel: Don't use MMX memcpy() in the kernel. 
I just discovered the hard way that clobbering FPU/MMX/SSE registers in the
kernel makes things very confusing for userspace (and other kernel threads.)

Let's banish all of those things from the kernel to keep things simple.
 2019-04-22 17:13:18 +02:00
Andreas Kling
a9d09e9020 Kernel: Get rid of the "cool globals" thingy. 
This was something I used while debugging with Computron. I haven't needed
it for months, so let's get rid of it. It's trivial to readd if needed.
 2019-04-21 12:33:14 +02:00
Andreas Kling
57da00b731 Include Makefile.common in all other Makefiles. 2019-04-21 04:09:39 +02:00
Andreas Kling
5f63f8120c Kernel: Remove "restorer" field from SignalActionData. 
I was originally implementing signals by looking at some man page about
sigaction() to see how it works. It seems like the restorer thingy is
system-specific and not required by POSIX, so let's get rid of it.
 2019-04-20 19:32:14 +02:00
Andreas Kling
5562ab3f5a Kernel: Remove some more unnecessary Thread members. 2019-04-20 19:29:48 +02:00
Andreas Kling
b2ebf6c798 Kernel: Shrink Thread by making kernel resume TSS heap-allocated. 2019-04-20 19:23:45 +02:00
Andreas Kling
ec365b82d5 Kernel: Make the colonel run at "Idle" priority (the lowest possible.) 
This means it won't hog the CPU for more than a single timeslice. :^)
 2019-04-20 15:58:45 +02:00