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encapsulating all such access into wall-defined functions
that makes sure locking is done as needed.
It also cleans up some uses of wall time vs. uptime some
places, but there is sure to be more of these needed as
well, particularily in MD code. Also, many current calls
to microtime() should probably be changed to getmicrotime(),
or to the {,get}microuptime() versions.
ok art@ deraadt@ aaron@ matthieu@ beck@ sturm@ millert@ others
"Oh, that is not your problem!" from miod@
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and m68k.
ok drahn@, millert@
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ok deraadt@ millert@
problem noticed by deprotect.com
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now call the poll backend. With this change we implement greater
poll(2) functionality instead of emulating it via the select backend.
Adapted from NetBSD and including some changes from FreeBSD.
Tested by many, deraadt@ OK
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argument. old cred only calls user suser_ucred. this will allow future
work to more flexibly implement the idea of a root process. looks like
something i saw in freebsd, but a little different.
use of suser_ucred vs suser in file system code should be looked at again,
for the moment semantics remain unchanged.
review and input from art@ testing and further review miod@
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rescinded 22 July 1999. Proofed by myself and Theo.
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is set). deraadt@ and tholo@ OK.
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ok art@
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These are the files that were ok:ed and tested.
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- cache_lookup
move common code from various fs's here
always return with vnode and parent locked
adjust return codes
- PDIRUNLOCK - new flag set if lookup couldn't lock parent vnode
- kernfs and procfs
lock vnode in get_root
don't unlock (again) in kernfs_freevp
fix memory leak in procfs
From tedu@stanford.edu
deraadt@ and various other ok
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so that this compiles with option DIAGNOSTIC; fixes PR #2528
ok fgsch@
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your kernel configuration file.
By default, GENERIC will enable this.
When PTRACE is not enabled, several ptrace-like features of the procfs
filesystem will be disabled as well (namely, the ability to read and write
any process' registers, as well as attching, single stepping and detaching
to/from processes).
This should help paranoid people build better sandboxens, and us to build
smaller ramdisks.
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They still stay in MD code for backwards compatibility, but a check in
ptrace.h checks if they are defined.
Note - the same thing will be done with PT_{GET,SET}FPREGS once vax implements
them and with PT_STEP when it's implemented by sparc, sparc64 and alpha.
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and procfs (and possibly more places in the future) and simply refuse to
fiddle with the execing process. This is an ugly hack, but this far we
haven't been successful in creating a race-free exec.
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the filesystem if we're allowed to mmap the file.
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(Look ma, I might have broken the tree)
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How this could have ever worked without this is beyond me.
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From NetBSD.
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fstatfs(2), and getfsstat(2) so you will need to build a new kernel
before doing a "make build" or you will get "unimplemented syscall" errors.
The new struct statfs has the following featuires:
o Has a u_int32_t flags field--now softdep can have a real flag.
o Uses u_int32_t instead of longs (nicer on the alpha). Note: the man
page used to lie about setting invalid/unused fields to -1. SunOS does
that but our code never has.
o Gets rid of f_type completely. It hasn't been used since NetBSD 0.9
and having it there but always 0 is confusing. It is conceivable
that this may cause some old code to not compile but that is better
than silently breaking.
o Adds a mount_info union that contains the FSTYPE_args struct. This
means that "mount" can now tell you all the options a filesystem was
mounted with. This is especially nice for NFS.
Other changes:
o The linux statfs emulation didn't convert between BSD fs names
and linux f_type numbers. Now it does, since the BSD f_type
number is useless to linux apps (and has been removed anyway)
o FreeBSD's struct statfs is different from our (both old and new)
and thus needs conversion. Previously, the OpenBSD syscalls
were used without any real translation.
o mount(8) will now show extra info when invoked with no arguments.
However, to see *everything* you need to use the -v (verbose) flag.
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