Commit Graph

4351 Commits

Author SHA1 Message Date
Norman Feske
0c299c5e08 base: separate native CPU from CPU session
This patch unifies the CPU session interface across all platforms. The
former differences are moved to respective "native-CPU" interfaces.

NOVA is not covered by the patch and still relies on a custom version of
the core-internal 'cpu_session_component.h'. However, this will soon be
removed once the ongoing rework of pause/single-step on NOVA is
completed.

Fixes #1922
2016-04-25 10:47:57 +02:00
Norman Feske
e9dec93f4b base: optimized slab allocator
This patch changes the organization of the slab blocks within the slab
allocator. Originally, blocks were kept in a list sorted by the number
of free entries. However, it turned out that the maintenance of this
invariant involves a lot of overhead in the presence of a large number
of blocks. The new implementation manages blocks within a ring in no
particular order and maintains a pointer to the block where the next
allocation is attempted. This alleviates the need for sorting blocks
when allocating and deallocating.

Fixes #1908
2016-04-25 10:47:56 +02:00
Norman Feske
fbc35cb796 base: hide slab implementation details from API
Issue #1908
2016-04-25 10:47:56 +02:00
Norman Feske
db5969e6cc Stress test for the slab allocator
Issue #1908
2016-04-25 10:47:55 +02:00
Norman Feske
7cf40a0971 allocator_avl: hand back meta data when destructed
This patch ensures that the 'Allocator_avl' releases all memory obtained
from the meta-data allocator at destruction time. If allocations are
still dangling, it produces a warning, hinting at possible memory leaks.
Finally, it properly reverts all 'add_range' operations.
2016-04-25 10:47:55 +02:00
Norman Feske
ed37c2ecff core: use copy of region metadata in detach
This patch fixes a use-after-free problem raised by the recent ability of
the slab allocator to dynamically release empty slab blocks. The
Rm_session_component::detach function used to rely on the assumption
that the region metadata co-located with the allocator metadata of the
'_map' would stay intact even after a 'free' if the region.
2016-04-25 10:47:55 +02:00
Norman Feske
329ab80d1d libc: never destruct the file-descriptor allocator
This patch prevents the destruction of the fd allocator when the program
exists. Otherwise, the meta data for file descriptors that were not
manually closed would vanish, which may cause problems in subsequent
destructors.
2016-04-25 10:47:55 +02:00
Norman Feske
8971bb25ce heap: release ds pool meta data when destructed
This patch makes sure that the dataspace pool is flushed before
destructing the heap-local allocator-avl instance. With the original
destruction order, the allocator would still contain dangling
allocations on the account of the dataspace pool when destructed. In
practice, this caused no problem because the underlying backing store is
eventually freed on the destruction of the pool. But it triggers a
runtime warning of the allocator since it has become more strict with
regard to dangling allocations.
2016-04-25 10:47:55 +02:00
Norman Feske
357dbdd64b sel4: allocate vm-space meta data statically
This patch removes the dynamically growing slab allocator from the
page-table registry. This has two benefits. First, we alleviate the
corner cases where the slab allocator needed to extend its backing store
while establishing a core-local memory mapping, thereby triggering a
nested core-local mapping. Without this corner case, no reentrant lock
is needed any longer. Second, it removes the dependency from the overly
large old API of the slab allocator. So we can tighten the slab
interface.
2016-04-25 10:47:54 +02:00
Emery Hemingway
1d301e9c14 lib/vfs: consistent device and inode enumeration
Issue #1751
2016-04-25 10:47:54 +02:00
Emery Hemingway
b8e52189d5 lib/vfs: new permissions errors
New errors STAT_ERR_NO_PERM, DIRENT_ERR_NO_PERM, and READLINK_NO_PERM to
distinguish lookup errors from permissions or other errors.

Issue #1751
2016-04-25 10:47:54 +02:00
Emery Hemingway
14ca140135 lib/vfs: fix disappearing <dir><dir/></dir>
Issue #1751
2016-04-25 10:47:53 +02:00
Emery Hemingway
4a58154e07 server/vfs: refactor for client isolation
VFS handles are allocated from per-session heaps.

Fixes #1751
2016-04-25 10:47:53 +02:00
Emery Hemingway
d1dc5a9071 utility to retrieve aligned sizes from arg strings
Issue #1751
2016-04-25 10:47:52 +02:00
Emery Hemingway
e22cd98a4f File_system::Connection: session upgrading
Upgrade the File_system session RAM quota when an Out_of_metadata
exception is caught.

Issue #1751
Issue #1909
2016-04-25 10:47:52 +02:00
Emery Hemingway
cb952d2087 obscure File_system::Out_of_node_handles exception
Replace the Out_of_node_handles exception with Out_of_metadata.
Clients need to know when the server is out of internal resources,
but not why.

Cleanup and sort the errors at file_system_session.h.
Remove 'Size_limit_reached exception' from File_system, which was
internal to ram_fs.

Issue #1751
Fixes #1909
2016-04-25 10:47:52 +02:00
Emery Hemingway
58632ab8b5 lib/vfs: improve memory safety at ram file system
Reference count files to prevent dangling handles.
Catch out-of-memory conditions and throw NO_SPACE.

Issue #1751
2016-04-11 12:56:54 +02:00
Emery Hemingway
82a7799638 lib/vfs: pass handle allocator to open(...)
Opening a VFS handle previously involved allocating from the global heap
at each VFS file system. By amending open with an allocator argument,
dynamic allocation can be partitioned.

A new close method is used to deallocate open handles.

Issue #1751
Issue #1891
2016-04-11 12:56:54 +02:00
Christian Helmuth
98b9a24357 builddir: genode world in optional repositories 2016-04-11 12:25:56 +02:00
Timo Wischer
3e1fa54c61 sd_card: generalise RPi sd card driver
This enables to reuse the driver for zynq (and other platforms) in the
future.

Fixes #1925
2016-04-11 12:12:23 +02:00
Timo Wischer
036f3b5702 sd_card: add card version information to interface
Issue #1925
2016-04-11 12:06:08 +02:00
Johannes Schlatow
338cfe5a94 sd_card: return capacity in 512kByte blocks
The returned capacity had different semantics dependent on the card
type. For HIGH_CAPACITY cards, the memory capacity is specified in 512kB
blocks. So we should also return 512kB blocks for STANDARD_CAPACITY
cards.

Issue #1925
2016-04-11 12:04:34 +02:00
Johannes Schlatow
063a603948 zynq: fix NIC phy detection
Fixes #1924
2016-04-11 12:01:31 +02:00
Johannes Schlatow
44fe44e8b6 init: invalidate child-provided service on kill
When init destroys a child server with an open session, the client must
be updated as it will otherwise store a pointer to a no-more existing
service object which will be dereferenced when the child client is
destroyed.

Fixes #1912
2016-04-11 11:58:15 +02:00
Emery Hemingway
b07be42e9f noux: fix leak in pipe ring buffer
Fixes #1923
2016-04-11 11:55:01 +02:00
Christian Helmuth
14f1ac497e linux: improve exception-signal handling
First, we use an alternate stack for signal handling now. The stack is
shared among all threads of the component, which is okay as we only
handle exceptions with log output and pass on to the default handler
(that terminates the execution). The primary motivation for the
alternate stack is the detection of SIGSEGV due to stack overflows.

Also, hybrid components now handle exception signals by logging and the
support for multi-threaded applications was improved.

Fixes #1935
2016-04-11 11:53:00 +02:00
Norman Feske
051e84c4b4 Move server API concept to base framework
This commit introduces the new `Component` interface in the form of the
headers base/component.h and base/entrypoint.h. The os/server.h API
has become merely a compatibilty wrapper and will eventually be removed.
The same holds true for os/signal_rpc_dispatcher.h. The mechanism has
moved to base/signal.h and is now called 'Signal_handler'.

Since the patch shuffles headers around, please do a 'make clean' in the
build directory.

Issue #1832
2016-04-11 11:51:46 +02:00
Alexander Boettcher
4ac7127f89 nova: avoid memory leak in kernel 2016-04-11 11:51:45 +02:00
Christian Prochaska
b6afee344f Noux: upgrade RAM quota in Rm_session_component::add_client()
Fixes #1933
2016-04-11 11:51:44 +02:00
Christian Prochaska
17401d6a63 Noux: increase tool_chain_auto run script timeout for Fiasco.OC
Fixes #1932
2016-04-11 11:51:44 +02:00
Christian Prochaska
a0d08d4bd1 Noux: workaround for libtool problem
Add the prefix '-Wl,' to static library names to keep them before shared
library names after libtool's command line reorderings.

Fixes #1928
2016-04-11 11:51:44 +02:00
Alexander Boettcher
f153bc9a74 platform_drv: use server framework for device_pd
Fixes #1927
2016-04-11 11:51:44 +02:00
Christian Helmuth
0cacd41823 base: forward arguments in unmanaged_singleton
This enables the use of reference types for constructor arguments.
2016-04-11 11:51:44 +02:00
Christian Helmuth
02f84f98c3 Explicitly set Qemu disk-image format to raw
Prevents the annoying warning about

  WARNING: Image format was not specified for 'bin/test.img' and probing guessed raw.
           Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted.
           Specify the 'raw' format explicitly to remove the restrictions.
2016-04-11 11:51:44 +02:00
Christian Helmuth
1f719dee26 Prevent warnings about unconstructed attached ROMs
If attached ROM dataspaces are not valid after update(), code that uses
these ROMs produces

  void Genode::Volatile_object< <template-parameter-1-1> >::_check_constructed() const [with MT = Genode::Attached_dataspace]: Deref_unconstructed_object
2016-04-11 11:51:43 +02:00
Christian Prochaska
146c694513 Reduce the maximum LOG session string length
The maximum possible string length is defined by the platform with the
lowest maximum IPC payload size (currently OKL4).

Fixes #1919
2016-04-11 11:51:43 +02:00
Norman Feske
a1239c5e9d News item about the RISC-V article 2016-04-11 11:51:43 +02:00
Johannes Schlatow
febb0cc13d config: deal gracefully with invalid dataspace cap
In scenarios where the config ROM is loaded from a report ROM or any
other non-static ROM, config might try to access an invalid dataspace
capability. This patch prevents the component from aborting in this
case.

Fixes #1914
2016-04-11 11:51:43 +02:00
Johannes Schlatow
07e10a04f9 tcp_terminal: disconnect socket on empty read
The tcp_terminal kept the socket open even though the client
disconnected. As a result, reconnecting to the tcp_terminal was not
working.

Fixes #1913
2016-04-11 11:51:43 +02:00
Johannes Schlatow
d32b5a54b6 base: remove duplicates from dependency list
This patch prevents duplicates in the DEPS argument to be passed to the build
stage.

Fixes #1916
2016-04-11 11:51:43 +02:00
Norman Feske
cda07b7da0 base: simplification of the IPC code
This commit replaces the stateful 'Ipc_client' type with the plain
function 'ipc_call' that takes all the needed state as arguments.
The stateful 'Ipc_server' class is retained but it moved from the public
API to the internal ipc_server.h header. The kernel-specific
implementations were cleaned up and simplified. E.g., the 'wait'
function does no longer exist. The badge and exception code are no
longer carried in the message buffers but are handled in kernel-specific
ways.

Issue #610
Issue #1832
2016-04-11 11:51:42 +02:00
Norman Feske
47878bd3e1 Remove 'Ipc_istream' and 'Ipc_ostream' from API
Fixes #610
2016-04-11 11:51:42 +02:00
Norman Feske
4cdfb9bc2f base: remove 'Native_connection_state' from API
Issue #1832
2016-04-11 11:51:42 +02:00
Norman Feske
da5d182ad3 base: remove 'Native_thread' from public API
Issue #1832
2016-04-11 11:51:42 +02:00
Norman Feske
dc0ebba1ec base-hw: clean up native_types.h 2016-03-18 22:43:05 +01:00
Norman Feske
84bfb4c04c base: remove 'Native_thread_id' type
Issue #1832
2016-03-18 22:43:01 +01:00
Emery Hemingway
da16ecc002 libc: remove trailing slash during file operations
POSIX stipulates that a trailing '/' on a path is valid for any
operation where the final path element is a directory.

Fixes #1330
2016-03-17 17:15:32 +01:00
Norman Feske
bc058e698a Add rust.run and xml_node.run to autopilot
Issue #1899
Issue #1424
2016-03-17 17:02:04 +01:00
Stefan Kalkowski
5085ad36c3 tool: remove deprecated 'make prepare' mechanism
Fix #1897
2016-03-17 17:02:04 +01:00
Norman Feske
eb4c6c0456 build.mk: suggest verbatim prepare_port command
If ports need preparation in order to execute a run script, use the
knowledge about the actual genode directory to suggest a command to the
user that can be directly copied to the command line.
2016-03-17 17:02:04 +01:00