This patch adds (very limited) support for memory-mapping pages on
file systems that are mounted on the special "none" device and that
do not implement PEEK support by themselves. This includes hgfs,
vbfs, and procfs.
The solution is implemented in libvtreefs, and consists of allocating
pages, filling them with content by calling the file system's READ
functionality, passing the pages to VM, and freeing them again. A new
VM flag is used to indicate that these pages should be mapped in only
once, and thus not cached beyond their single use. This prevents
stale data from getting mapped in without the involvement of the file
system, which would be problematic on file systems where file contents
may become outdated at any time. No VM caching means no sharing and
poor performance, but mmap no longer fails on these file systems.
Compared to a libc-based approach, this patch retains the on-demand
nature of mmap. Especially tail(1) is known to map in a large file
area only to use a small portion of it.
All file systems now need to be given permission for the SETCACHEPAGE
and CLEARCACHE calls to VM.
A very basic regression test is added to test74.
Change-Id: I17afc4cb97315b515cad1542521b98f293b6b559
This obviates the need for several file system implementations to
remember the device on which they are mounted.
Change-Id: Ida8325cf4bcf072e61761cfee34e3f7ed2d750b9
This directory is filled dynamically with regular files, one for each
service that RS knows about, named after its label. Its contents are
still subject to (heavy) change, but currently expose the service's
endpoint and number of restarts so far.
Change-Id: Ie58c824bcb6382c8da7a714e59fee87329970b4b
- rename start_vtreefs to run_vtreefs, since the function returns upon
termination these days;
- add get_inode_slots function to retrieve the number of indexed slots;
- add support for extra per-inode data for arbitrary storage.
Change-Id: If2d365d7b478a1cecc9e20fb2b3e70c1a1cf7243
The test would sometimes fail because an alarm triggered before the
system call to be interrupted by the alarm could be started.
Change-Id: Ia507720a1f2d259afde1f97b7edd03f22cbd4810
Also fix two small IOCTL-related bugs:
- do not print an argument pointer for argument-less IOCTLs;
- print IOCTL contents with -V given once, just like structures.
Change-Id: Iec7373003d71937fd34ee4b9db6c6cec0c916411
Fix for problems reported by Alejandro Hernández:
. VM unmap: handle case where there is no nextvr
Fixes for problems found by running Melkor ELF fuzzing tool:
. VM: better handle case where region prealloc fails by
freeing memory that was allocated so far
. MFS fs_readwrite: EOF check should happen for read and
peek requests, not just read
This fixes#4.
Change-Id: I2adf4eebdfb4c48a297beff0478eed5c917a53a4
With the import of Xorg, a proper separation between login-time and sub
shell-time of the environment setup is necessary.
Instead of re-developping this from scratch, I am taking the opportunity
to import the NetBSD default environment.
Change-Id: Ib6a8fbd9c2f407ccd59be57a52ef9df21c2c9ce7
- Adding missing fields for PCI device lookup
- Adding the domain (for now set to zero) as part of the slot name
Change-Id: Iebaf3b21f6ab5024738cbc1dea66d5ad3ada175d
- Moved to KNF
- Whitespace cleanup
- Removed useless static functions prototypes
- Renamed some file private functions by prepending '__'
- Renamed some server-specific function by prepending '_'
- Fixed compilation warning for WARNS= 3
Change-Id: Ie44d35839177d5ee0630cdf576660c852452ab80
Define _NLS_PRIVATE in tools/llvm-tblgen/Makefile so that
<tools/compat/nl_types.h> will pull in <include/nl_types.h>. This is
necessary as Clang's c++/v1/locale implementation contains references
to catopen and other catalog symbols that aren't defined anywhere.
Moreover, the compiler will complain about NL_CAT_LOCALE not being
declared. The compat nl_types.h fixes these discrepancies.
However, <nl_types.h> uses __format_arg to add function attributes to
declarations. On NetBSD __format_arg(fmtarg) is defined by
<sys/cdefs.h> to be __attribute__((__format_arg__ (fmtarg))) for
briefness, but other platforms don't do that. Consequently, the build
will fail on catopen and friends function declarations because the
compiler doesn't know how to handle __format_arg(fmtarg). A fixup to
<tools/compat/nl_types.h> takes care of this, but it won't win any
beauty contest.
Change-Id: Ic4426eca8385aeef858e60304d6e8c06cd497d95
Signed-off-by: Thomas Veerman <tveerman@gmail.com>
Read calls may be repeated by VFS if the user destination memory is
not mapped in. Devman currently assumes that all reads are
successful, and uses this to track whether EOF has been reached for
a particular event, discarding it as soon as this happens. Upon
repetition, this may result in lost events for devmand.
With this patch, devman discards events only once devmand reads the
EOF marker, which itself can never generate a user page fault. The
result is that read calls for data can be repeated safely, without
the risk of losing events in the process.
Change-Id: I9dfdf7f8c8992a20a10302d79c3506e61f8564b0
When building Gold on OSX 10.9 and Clang 6.0, the build process fails
with the error:
In file included from /Users/thomas/minix/tools/binutils/../../external/gpl3/binutils/dist/gold/binary.cc:31:
In file included from /Users/thomas/minix/tools/binutils/../../external/gpl3/binutils/dist/gold/stringpool.h:23:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string:438:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cwchar:107:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cwctype:54:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cctype:51:72: error: use of undeclared identifier 'do_not_use_isalnum_with_safe_ctype'
inline _LIBCPP_INLINE_VISIBILITY int __libcpp_isalnum(int __c) {return isalnum(__c);}
Signed-off-by: Thomas Veerman <tveerman@gmail.com>
Change-Id: Ib7ca13a51e83c31bb3020d755e04b308aeacde5d
- Fixed missing variable interpolation because of single quotes
- Replaced /bin/sh in gen_uEnv.txt.sh with /usr/bin/env bash as the default
echo doesn't support '-n'
- Fixed some whitespace errors
- A succesful build requires for now to skip the gold linker on OSX.
Change-Id: Id09bf52f45252026e3a58b74e8448ea24a0dab12
We have to use SOCK_SEQPACKET instead of SOCK_STREAM for client/server
communication, because UDS does things with control messages that tmux
does not expect.
Change-Id: I3edb1875d61fb976cf6485c650f4fd4b82fa354c
The NetBSD version is seriously broken--it is unable to match lines
against an empty pattern--and appears to be unmaintained.
The new version is the latest OpenBSD grep, with a number of MINIX-
specific changes marked as such, and an additional number of
(signed/unsigned, const) fixes to pass compilation.
Since this is not NetBSD code, move back the entire thing into
minix/usr.bin.
Change-Id: Icd40794a2d0cff9e7fb452db7d28c16dbd25e51d
The entire infrastructure relied on an ACK feature, and as such, it
has been broken for years now, with no easy way to repair it.
Change-Id: I783c2a21276967af115a642199f31fef0f14a572
- synchronize request type with ioctl by making it unsigned long;
- unbreak VFS requests, as they were being sent to PM;
- use proper ioctl direction flags (and new numbers) for requests;
- remove some needless header inclusions;
- svrctl is in libc, make its message name reflect this;
- keep backward compatibility: svrctl is part of the userland ABI.
Change-Id: I44902e8d0d11b8ebc1ef3bda94d2202481743c9b
