Commit graph

7487 commits

Author SHA1 Message Date
cinap_lenrek
ca2f1c07f2 acid/kernel: for stacktraces, try to use context from error stack when process is not sleeping
when a process state has not been saved (Proc.mach != nil)
then the contents of Proc.sched should be considered invalid.

to approximate a stacktrace in this case, we use the error
stack and get a stacktrace from the last waserror() call.
2019-09-12 15:28:04 +02:00
cinap_lenrek
fbf29fc695 ip/cifsd: dont return garbage in upper 32 bit of unix extension stat fields 2019-09-11 15:41:14 +02:00
cinap_lenrek
88b386a4a1 ip/cifsd: add basic support for UNIX extensions 2019-09-10 21:19:34 +02:00
cinap_lenrek
67edb3bd01 ip/cifsd: exit to close connection when we get malformed smb header (fixes linux mount hang) 2019-09-10 21:17:23 +02:00
cinap_lenrek
481a4c75fd usbehci: silence "param declared but not used" compiler warning in itdinit()/sitdinit() 2019-09-09 16:58:45 +02:00
cinap_lenrek
7de7444c6e sdide: silence compiler warning in atadebug() 2019-09-09 16:56:01 +02:00
Roberto E. Vargas Caballero
42240127a7 ape: Add mkstemp to /sys/src/ape/lib/ap/gen/mkfile 2019-09-09 17:27:57 +01:00
Roberto E. Vargas Caballero
5e9d8a7b18 Add toascii() to ape 2019-09-09 16:00:06 +01:00
Roberto E. Vargas Caballero
e0720a48b0 Add mkstemp to stdlib.h
q
2019-09-09 15:58:39 +01:00
cinap_lenrek
662fd71e11 merge 2019-09-08 19:04:55 +02:00
cinap_lenrek
62eec43340 kernel: clear FPillegal in pexit() and before pprint()
pexit() and pprint() can get called outside of a syscall
(from procctl()) with a process that is in active note
handling and require floating point in the kernel on amd64
for aesni (devtls).
2019-09-08 19:02:01 +02:00
cinap_lenrek
6ad06b36b2 devproc: restore psstate info string in procstopwait() 2019-09-08 18:53:12 +02:00
Ori Bernstein
71939a82cc Allow address expressions in ?c after int casts.
This fixes ocaml on non-x86 architectures, where we have code
that looks like:

	#define Fl_head ((uintptr_t)(&sentinel.first_field))

Without this change, we get an error about a non-constant
initializer. This change takes the checks for pointers and
makes them apply to all expressions. It also makes the checks
stricter, preventing the following from compiling to junk:

	int x;
	int y = 42;
	int *p = &x + y
2019-09-07 18:25:04 -07:00
Ori Bernstein
2917cb1d17 merge 2019-09-07 12:46:44 -07:00
Ori Bernstein
ba8e5c774a Libflac: Tell it that we have stdint.h so it finds SIZE_MAX 2019-09-07 12:37:33 -07:00
Ori Bernstein
ff9ce8210a Include integer limits from generic stdint.h in system-specific stdint.h 2019-09-06 18:01:52 -07:00
cinap_lenrek
971e14663a merge 2019-09-07 02:13:35 +02:00
cinap_lenrek
766a641d25 cc: fix void cast crash
the following code reproduces the crash:

void
foo(void)
{
}

void
main(int argc, char **argv)
{
	(void)(1 ? (void)0 : foo());
}

the problem is that side() gives a false positive on the OCOND
with later constant folding eleminating the acutal side effect
and OCAST ending up with two nested OCATS with the nested one
being zapped (type == T).
2019-09-07 02:11:18 +02:00
Ori Bernstein
c09546ccea Add missing UINTsz_MIN defines to ape stdint.h 2019-09-06 16:33:11 -07:00
Ori Bernstein
d1204d9b80 merge 2019-09-06 11:57:08 -07:00
David du Colombier
27824a6c0b sys/src/libventi: define VtEntryNoArchive constant 2019-09-06 11:55:35 -07:00
David du Colombier
cb091e7539 sys/src/libventi: implement vtsha1 and vtsha1check functions 2019-09-06 11:55:18 -07:00
David du Colombier
63ae9ed53a sys/src/libventi: implement vtreconn and vtredial functions 2019-09-06 11:54:44 -07:00
cinap_lenrek
98e2ea45fb ip/ipconfig: don't leave behind null address when dhcp gets interrupted
cleanup the null address (::) when the command gets interrupted.
2019-09-06 18:48:35 +02:00
Ori Bernstein
8cbe3772c4 Add RFC2822 (email style) formatted dates to to date(1). 2019-09-06 08:25:21 -07:00
cinap_lenrek
0cb4115b82 kernel: get rid of tmperrbuf and use syserrstr swapping instead in namec() 2019-09-04 02:44:39 +02:00
cinap_lenrek
4088f72903 rune(2): complete source references 2019-09-04 02:41:22 +02:00
cinap_lenrek
6aa7ebcf49 kernel: make exec clear errstr, stop side-channels and truncate on utf8 boundary
make exec() clear the per process error string
to avoid spurious errors and confusion.

the errstr() syscall used to always swap the
maximum buffer size with memmove(), which is
problematic as this gives access to the garbage
beyond the NUL byte. worse, newproc(), werrstr()
and rerrstr() only clear the first byte of the
input buffer. so random stack rubble could be
leaked across processes.

we change the errstr() syscall to not copy
beyond the NUL byte.

the manpage also documents that errstr() should
truncate on a utf8 boundary so we use utfecpy()
to ensure proper NUL termination.
2019-09-04 02:40:41 +02:00
cinap_lenrek
e4a57c8b8a bcm64: enable devgpio in kernel configuration (thanks qeed) 2019-09-02 19:38:44 +02:00
cinap_lenrek
4b9ccb2de0 ndb/dnsquery, ndb/csquery: write ">" prompt to stderr (thanks kvik)
kvik writes:

dnsquery(8) prints the interactive prompt on stdout together with
query results, making scripted usage unnecessarily difficult.

A straightforward solution is prompting on stderr instead: as
practiced by rc(1), among many others -- promptly taking care of
the issue:

	; echo 9front.org mx | ndb/dnsquery >[2]/dev/null
2019-08-30 20:17:19 +02:00
cinap_lenrek
a6fde3edc5 rsa(2): document asn1encodeRSApriv() and asn1encodeRSApub() functions 2019-08-30 07:35:54 +02:00
cinap_lenrek
85216d3d95 auth/rsa2asn1: implement private key export with -a flag (thanks kvik)
kvik writes:

I needed to convert the RSA private key that was laying around in
secstore into a format understood by UNIX® tools like SSH.

With asn12rsa(8) we can go from the ASN.1/DER to Plan 9 format, but not
back - so I wrote the libsec function asn1encodeRSApriv(2) and used it in
rsa2asn1(8) by adding the -a flag which causes the full private key to be
encoded and output.
2019-08-30 07:34:35 +02:00
cinap_lenrek
7bb1a9a185 pc64: map kernel text readonly and everything else no-execute
the idea is to catch bugs and make kernel exploitation
harder by mapping the kernel text section readonly
and everything else no-execute.

l.s maps the KZERO address space using 2MB pages so
to get the 4K granularity for the text section we use
the new ptesplit() function to split that mapping up.

we need to set EFER no-execute enable bit early
in apbootstrap so secondary application processors
will understand the NX bit in our shared kernel page
tables. also APBOOTSTRAP needs to be kept executable.

rebootjump() needs to mark REBOOTADDR page executable.
2019-08-29 07:35:22 +02:00
cinap_lenrek
e988d56a2f 8l, 6l: fix "unknown relation: TEXT" xfol() bug (thanks mischief)
mischief reports:

this assembler input assembles with 6a but makes 6l crash.

 // 6a l.s
 // 6l l.6
 // _intrr: unknown relation: TEXT in _intrr
 // 6l 511: suicide: sys: trap: fault write addr=0x18 pc=0x20789c

 TEXT noteret(SB), 1, $-4
         CLI
         JMP _intrestore // works when commented

 TEXT _intrr(SB), 1, $-4
 _intrestore:
         RET

 TEXT _main(SB), 1, $-4
         RET
2019-08-28 21:01:16 +02:00
cinap_lenrek
d9fec3c70a kernel: prohibit changing cache attributes (SG_CACHED|SG_DEVICE) in segattach(), set SG_RONLY in data2txt()
the user should not be able to change the cache
attributes for a segment in segattach() as this
can cause the same memory to be mapped with
conflicting attributes in the cache.

SG_TEXT should always be mapped with SG_RONLY
attribute. so fix data2txt() to follow the rules.
2019-08-27 06:16:20 +02:00
cinap_lenrek
d25ca13ed8 kernel: make user stack segment non-executable 2019-08-27 04:04:46 +02:00
cinap_lenrek
1e773c97e7 pc64: implement NX bit discovery, map kernel mappings no-execute 2019-08-27 03:55:12 +02:00
cinap_lenrek
49411b2ca1 kernel: catch execution read fault on SG_NOEXEC segment (for mips) 2019-08-27 03:48:51 +02:00
cinap_lenrek
2149600d12 kernel: catch execution read fault on SG_NOEXEC segment
fault() now has an additional pc argument that is
used to detect fault on a non-executable segment.
that is, we check on read fault if the segment
has the SG_NOEXEC attribute and the program counter
is within faulting page.
2019-08-27 03:47:18 +02:00
cinap_lenrek
128ea44a89 kernel: expose no execute bit to portable mmu code as SG_NOEXEC / PTENOEXEC, add PTECACHED bits
a portable SG_NOEXEC segment attribute was added to allow
non-executable (physical) segments. which will set the
PTENOEXEC bits for putmmu().

in the future, this can be used to make non-executable
stack / bss segments.

the SG_DEVICE attribute was added to distinguish between
mmio regions and uncached memory. only matterns on arm64.

on arm, theres the issue that PTEUNCACHED would have
no bits set when using the hardware bit definitions.
this is the reason bcm, kw, teg2 and omap kernels use
arteficial PTE constants. on zynq, the XN bit was used
as a hack to give PTEUNCACHED a non-zero value and when
the bit is clear then cache attributes where added to
the pte.

to fix this, PTECACHED constant was added.

the portable mmu code in fault.c will now explicitely set
PTECACHED bits for cached memory and PTEUNCACHED for
uncached memory. that way the hardware bit definitions
can be used everywhere.
2019-08-26 22:34:38 +02:00
qwx
91a8d03040 vncv: fix snarf buffer realloc memory corruption
fix never updating p when snarf is reallocated,
resulting in memory corruption.
2019-08-26 17:02:58 +02:00
cinap_lenrek
51cfe763a4 emmc: 50MHz highspeed support (from richard miller) 2019-08-25 20:02:53 +02:00
cinap_lenrek
a8c50a7943 bcm64: replace emmc2 driver with richard millers sdhc driver
the new driver supports 50MHz highspeed bus mode
and uses ADMA instead of SDMA.
2019-08-25 18:45:29 +02:00
cinap_lenrek
60ec886191 /sys/lib/dist/mkfile: adjust 2GB for pi3 and zynq img 2019-08-24 16:35:03 +02:00
cinap_lenrek
f6ef250871 /sys/lib/dist/mkfile: storage vendors idea of 2GB is deflating 2019-08-24 16:29:00 +02:00
cinap_lenrek
bcf988aff1 bcm64: deal with discontinuous memory regions, avoid virtual memory aliasing, implement vmap() proper
on the 2GB and 4GB raspberry pi 4 variants, there are two
memory regions for ram:

[0x00000000..0x3e600000)
[0x40000000..0xfc000000)

the framebuffer is somewhere at the end of the first
GB of memory.

to handle these, we append the region base and limit
of the second region to *maxmem= like:

*maxmem=0x3e600000 0x40000000 0xfc000000

the mmu code has been changed to have non-existing
ram unmapped and mmukmap() now uses small 64K pages
instead of 512GB pages to avoid aliasing (framebuffer).

the VIRTPCI mapping has been removed as we now have
a proper vmap() implementation which assigns vritual
addresses automatically.
2019-08-23 21:39:20 +02:00
cinap_lenrek
e6d22570a8 bcm: invalidate cache on Fbinfo after firmware completion 2019-08-22 02:54:06 +02:00
cinap_lenrek
aca0293f0b bcm: flush out early boot messages on uart and screen initialization
make early boot messages available by writing out
kmesg.buf after uart and screen initialization.
2019-08-22 02:52:21 +02:00
cinap_lenrek
a70b93a356 /sys/lib/acid/kernel: fix procstk() for arm64, set kdir for arm/arm64 to bcm/bcm64 2019-08-21 19:34:24 +02:00
cinap_lenrek
b4cb19235e bcm: set XN bits for kernel device mappings 2019-08-21 18:28:01 +02:00