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cinap_lenrek 08d6b0f043 kernel: improve diagnostics by reversing the roles of Proc.parentpid and Proc.parent 
for better system diagnostics, we *ALWAYS* want to record the parent
pid of a user process, regardless of if the child will post a wait
record on exit or not.

for that, we reverse the roles of Proc.parent and Proc.parentpid so
Proc.parentpid will always be set on rfork() and the Proc.parent
pointer will point to the parent's Proc structure or is set to nil
when no wait record should be posted on exit (RFNOWAIT flag).

this means that we can get the pid of the original parent process
from /proc, regardless of the the child having rforked with the
RFNOWAIT flag. this improves the output of pstree(1) somewhat if
the parent is still alive. note that theres no guarantee that the
parent pid is still valid.

the conditions are unchanged:

a user process that will post wait record has:

up->kp == 0 && up->parent != nil && up->parent->pid == up->parentpid

the boot process is:

up->kp == 0 && up->parent == nil && up->parentpid == 0

and kproc's have:

up->kp != 0 && up->parent == nil && up->parentpid == 0
 2019-12-01 17:57:14 +01:00
cinap_lenrek 21a599743e pc, pc64: merge adjacent e820 map entries of same type 
some machines give us over 300 e820 ram entries that are
all adjacent to each other causing us to run out of Map
end Emap entries.

this change adds e820clean() function, which sorts the
current e820 map and discards unusable entries and merges
adjacent entries. e820clean() is called after we parsed
the *e820= boot parameter or when we run out of entries.

an example of such a broken e820 map (thanks mischief):

*e820=1 0000000000000000 0000000000008000 1 0000000000008000 000000000000c000 1 000000000000c000 000000000003f000 1 000000000003f000 0000000000040000 1 0000000000040000 00000000000a0000 1 0000000000100000 0000000001000000 1 0000000001000000 0000000001020000 1 0000000001020000 0000000009d82000 2 0000000009d82000 000000000a000000 1 000000000a000000 000000000a200000 4 000000000a200000 000000000a20b000 1 000000000a20b000 000000000b000000 2 000000000b000000 000000000b020000 1 000000000b020000 0000000010000000 1 0000000010000000 000000001000b000 1 000000001000b000 00000000d9634000 1 00000000d9634000 00000000d96be000 1 00000000d96be000 00000000d96cc000 1 00000000d96cc000 00000000d96db000 1 00000000d96db000 00000000d97df000 1 00000000d97df000 00000000d97ed000 1 00000000d97ed000 00000000d9837000 1 00000000d9837000 00000000d9844000 1 00000000d9844000 00000000d985e000 1 00000000d985e000 00000000d9865000 1 00000000d9865000 00000000d9897000 1 00000000d9897000 00000000d98d7000 1 00000000d98d7000 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00000000dbd70000 00000000dbd79000 1 00000000dbd79000 00000000dbd7a000 1 00000000dbd7a000 00000000dbd7c000 1 00000000dbd7c000 00000000dbd7d000 1 00000000dbd7d000 00000000dbd90000 1 00000000dbd90000 00000000dbd93000 1 00000000dbd93000 00000000dbd97000 1 00000000dbd97000 00000000dbd9a000 1 00000000dbd9a000 00000000dbd9b000 1 00000000dbd9b000 00000000dbd9e000 1 00000000dbd9e000 00000000dbda1000 1 00000000dbda1000 00000000dbda5000 1 00000000dbda5000 00000000dbda9000 1 00000000dbda9000 00000000dbdaf000 1 00000000dbdaf000 00000000dbdb3000 1 00000000dbdb3000 00000000dbdb4000 1 00000000dbdb4000 00000000dbdbe000 1 00000000dbdbe000 00000000dbdbf000 1 00000000dbdbf000 00000000dbdc0000 1 00000000dbdc0000 00000000dbdc1000 1 00000000dbdc1000 00000000dbdc2000 1 00000000dbdc2000 00000000dbdc5000 1 00000000dbdc5000 00000000dbdc6000 1 00000000dbdc6000 00000000dbdc7000 1 00000000dbdc7000 00000000dbdcb000 1 00000000dbdcb000 00000000dbdcf000 1 00000000dbdcf000 00000000dbdd5000 1 00000000dbdd5000 00000000dbdd8000 1 00000000dbdd8000 00000000dbddf000 1 00000000dbddf000 00000000dbde1000 1 00000000dbde1000 00000000dbde5000 1 00000000dbde5000 00000000dbde8000 1 00000000dbde8000 00000000dbded000 1 00000000dbded000 00000000dbdf0000 1 00000000dbdf0000 00000000dbdf4000 1 00000000dbdf4000 00000000dbdf7000 1 00000000dbdf7000 00000000dbdfb000 1 00000000dbdfb000 00000000dbe1e000 1 00000000dbe1e000 00000000dbe20000 1 00000000dbe20000 00000000dbe23000 1 00000000dbe23000 00000000dbe27000 1 00000000dbe27000 00000000dbe28000 1 00000000dbe28000 00000000dbe2a000 1 00000000dbe2a000 00000000dbe2b000 1 00000000dbe2b000 00000000dc24d000 1 00000000dc24d000 00000000dc25c000 1 00000000dc25c000 00000000dc25d000 1 00000000dc25d000 00000000dc25e000 1 00000000dc25e000 00000000dc273000 1 00000000dc273000 00000000dc274000 1 00000000dc274000 00000000dc275000 1 00000000dc275000 00000000dc276000 1 00000000dc276000 00000000dc27a000 1 00000000dc27a000 00000000dc27e000 1 00000000dc27e000 00000000dc283000 1 00000000dc283000 00000000dc284000 1 00000000dc284000 00000000dc2a2000 1 00000000dc2a2000 00000000dc2a6000 1 00000000dc2a6000 00000000dd163000 2 00000000dd163000 00000000dd2a8000 1 00000000dd2a8000 00000000dd42a000 4 00000000dd42a000 00000000dd83e000 1 00000000dd83e000 00000000de38b000 1 00000000de38b000 00000000de430000 1 00000000de430000 00000000de733000 1 00000000de733000 00000000de74f000 1 00000000de74f000 00000000de770000 1 00000000de770000 00000000de77d000 1 00000000de77d000 00000000de783000 1 00000000de783000 00000000de78b000 1 00000000de78b000 00000000de7a4000 1 00000000de7a4000 00000000de7b4000 1 00000000de7b4000 00000000de7c9000 1 00000000de7c9000 00000000de7e0000 1 00000000de7e0000 00000000deff9000 1 00000000deff9000 00000000df000000 1 0000000100000000 000000021f380000 2 00000000000a0000 0000000000100000 2 00000000df000000 00000000e0000000 2 00000000f8000000 00000000fc000000 2 00000000fd000000 0000000100000000
 2019-12-01 14:06:30 +01:00
cinap_lenrek 2359389570 os(1): add c implementation of inferno os command and cmd(3) device manpages 
this is a reimplementation of infernos os(1) command, which
allows running commands in the underhying host operating
system when inferno runs in hosted mode (emu). but unlike
inferno, we want to use it to run commands on the client
side of a inferno or drawterm session from the plan9 cpu
server, so it defaults to /mnt/term/cmd for the mountpoint.
 2019-11-30 20:10:08 +01:00
cinap_lenrek d32e5d130c sd53c8xx: fix the driver for amd64, fix alignment/padding issues, fix freechain handling 2019-11-24 21:56:54 +01:00
cinap_lenrek 87c8fa5415 upas/fs: remove useless loop in rf822() 2019-11-24 03:46:53 +01:00
Ori Bernstein 6c2017f6a6 fix ref822 again: remove uniqarray(), fix case with many entries in 'n'. 2019-11-23 08:23:21 -08:00
Alex Musolino cac853084c upas/marshal: fix printinreplyto function 
According to RFC822, the message identifier (msg-id) in a
"In-Reply-To" header must start with a '<' and end with a '>'.
 2019-11-22 17:29:35 +10:30
Ori Bernstein 543c35deba fix ref882 reference parsing. 
we were getting nils in the list when there were many references.
this fixes and simplifies the copying loop and makes the code rhyme.
 2019-11-21 17:17:54 -08:00
Ori Bernstein 4cef9b12fd show urls in html messages. 
sometimes, I get phishing emails with links that I have an unstoppable
urge to click.
 2019-11-21 10:48:13 -08:00
BurnZeZ 29b6ad3330 grep: error if sbrk fails 2019-11-21 16:44:41 +00:00
Ori Bernstein 5510488879 merge 2019-11-20 16:12:21 -08:00
Ori Bernstein 0ff4099a60 improve language in delay(9) 
give the reader enough context to know when to use and not
use the delay family of functions.
 2019-11-20 16:05:52 -08:00
cinap_lenrek 07e3d1c254 merge 2019-11-21 00:40:15 +01:00
cinap_lenrek 8e20bc7515 vac(1): assimilate manpage additions from plan9port and complete usage lines (thanks joe9) 
the usage lines in vac where out of sync with the implementation
and the manpages.

document the -a and -x options, from:

https://github.com/9fans/plan9port/blob/master/man/man1/vac.1
 2019-11-21 00:39:07 +01:00
Alex Musolino 48a804e3fd mail(1): fix typo 2019-11-20 17:46:29 +10:30
Alex Musolino 088ec01b1e timezones: change DST timezone string for South Australia 
Use "CDT" for DST as distinct from "CST" for non-DST.
 2019-11-20 11:49:16 +10:30
Ori Bernstein eca7cac908 merge 2019-11-19 12:31:42 -08:00
Ori Bernstein 0b6f0c70db add start of section 9 manpages (thanks rgl) 
this change adds some of the kernel manpages from 9legacy,
fixed and updated to match the changes in 9front.
 2019-11-19 12:30:40 -08:00
cinap_lenrek 2c9e3861a5 rio: fix cons read breakage from previous commit 2019-11-19 09:03:45 +01:00
Alex Musolino 37d6ddd8f3 rio(4): update description of wctl file format 
State strings are now padded to 12-characters.  Remove ambiguous
reference to "12-character style", instead referring the reader to
image(6).
 2019-11-19 12:43:53 +10:30
Alex Musolino 59115ba407 rio: pad window status strings in wctl files 
This makes it possible to read the entire initial contents of the wctl
files without blocking.
 2019-11-19 12:40:53 +10:30
Alex Musolino 4d4107b385 rio: fix bug causing short reads of wctl files 
Previously, reads of wctl files would return one byte less than
requested as the returned string must be null terminated.  Now we pass
the actual size of the allocated buffer to the handler, which is large
enough to accommodate a trailing partial rune and terminating null
byte.
 2019-11-19 12:38:13 +10:30
Ori Bernstein f32148b290 document 'T' flag misbehavior (thanks rgl) 2019-11-18 01:06:02 -08:00
Ori Bernstein b2e29cf315 Specifiy the restrictions on 9boot file names more clearly. 2019-11-17 16:17:15 -08:00
Ori Bernstein 3e1a75d08f Document 9bootfat limitation. 2019-11-17 16:08:48 -08:00
cinap_lenrek 44615fba43 sdiahci: implement reset timeout for ahciencreset(), make blink() never block, fix map[] access in ledkproc() 
Ori_B reports that his controller gets stuck in the ahciencreset()
wait loop. so we implement a 1000 ms timeout. we replace delay()
with esleep() as we are always called from the ledkproc().

blink() could enter infinite delay loop as well, so instead of
waiting for the message to get transmitted we exit making it
non-blocking (we will get called again anyway).

the access to the controller map[] was wrong in ledkproc(). the
index is the controller number, not the drive number!
 2019-11-17 21:19:55 +01:00
cinap_lenrek 521a0b336c bootrc: for wireless netbooting, set the WPA/WPA2 preshard key with wpapsk=password boot parameter 
this allows automatic netbooting without password prompt
for the wirelss network.
 2019-11-17 19:04:38 +01:00
Ori Bernstein b31e965ea3 Parse global pax header in the right place. 2019-11-15 13:26:25 -08:00
Ori Bernstein a68bee44d3 Add pax extended header support to tar. 
Support for 'path=', 'uname=', 'gname=', 'size=', and 'atime=' pax
headers is useful.  Others are ignored, possibly with a warning.

We were running into missing support with the 'go' extraction.

At the same time, this cleans up the way that we handle paths,
getting rid of static buffers with hidden space at the front.
 2019-11-14 13:52:41 -08:00
Ori Bernstein 4dab28b14f thread(2): fix manpage typos (thanks rgl) 2019-11-12 13:01:38 -08:00
Ori Bernstein 52e92163a6 draw(2): fix manpage typo (thanks rgl) 2019-11-11 13:35:47 -08:00
cinap_lenrek b638c7753d devip: use the routing table for local source ip address selection 
when making outgoing connections, the source ip was selected
by just iterating from the first to the last interface and
trying each local address until a route was found. the result
was kind of hard to predict as it depends on the interface
order.

this change replaces the algorithm with the route lookup algorithm
that we already have which takes more specific desination and
source prefixes into account. so the order of interfaces does
not matter anymore.
 2019-11-10 19:50:46 +01:00
Ori Bernstein d72a404399 Fix directory heuristic for long file names. 
Tar specifies that a filename ending with '/' is a directory. We were
incorrectly looking at the short name. This meant that when we have long
filenames with a '/' at the 100th character, we would decide it was a
directory.

This change uses the long name when deciding the size for extraction,
and trusts the header size when just skipping forward in the stream.
 2019-11-05 10:48:51 -08:00
cinap_lenrek 8b79ad59f1 games/turtle: do exit instead of crash in redraw() when there where no lines drawn 2019-11-03 15:20:57 +01:00
aiju 528936156f add games/linden and turtle to mkfile 2019-11-03 13:54:26 +00:00
aiju ae61eb9381 add games/linden and games/turtle 2019-11-03 13:49:23 +00:00
cinap_lenrek 37827f533b tar: fix memory corruption in extract1 (thanks petter) 
extract1() expects two extra bytes to be avilabe before
fname buffer so it can prepend ./ before the name. this
used to be the case with name(), but was violated when
long name support was added and getname() was used in
place of name() which did not reserve the 2 extra bytes.

this change reserves two extra bytes in the getname()'s
static buffer and also removes the extra copy as name()
already makes a copy.
 2019-11-02 14:17:34 +01:00
cinap_lenrek 638f860791 upasfs(4): fix manpage typo (thanks rgl) 2019-11-02 12:52:39 +01:00
Alex Musolino 7fbd3fd4fe file: add (very) basic support for detecting mpeg4 formats 2019-11-01 12:05:11 +10:30
Alex Musolino 06786f2a71 upas/fs: fix handling of numeric timezone offsets in strtotm 
Since numeric timezone offsets are relative to GMT, initialise zone to
GMT so tm2sec(2) does not assume local time.

Note that if strtotm encounters a timezone *string* and consequently
overwrites zone then we will end up in the same mess since tm2sec(2)
only deals with GMT or local time.
 2019-10-31 09:41:03 +10:30
Ori Bernstein 6c43477492 Check if 'm' is null when updating messages. 2019-10-28 14:12:44 -07:00
cinap_lenrek 82d04a4e63 bcm: fix software cursor avoidance for loadimage() case (thanks bitmapper) 2019-10-27 23:51:11 +01:00
cinap_lenrek ff44b92c96 ip/dhcpd: prevent client from increasing max reply size beyond the reply buffer capacity 2019-10-22 06:53:50 +02:00
Ori Bernstein 9314883aff Make ctrl+g focus text windows and cycle zeroxed copies (thanks kvik) 2019-10-21 15:29:07 -07:00
Alex Musolino 7682a24bc5 /sys/lib/plumb/basic: open nedmail windows with -noscroll 
This preserves the desired behaviour of *not* scrolling to the bottom
of plumbed messages even when rio(1) is invoked with the -s flag.
 2019-10-22 08:18:20 +10:30
cinap_lenrek e168ea045f ndb/dns: handle empty $DNSSERVER 
when $DNSSERVER is empty, query ndb for local dns servers
instead of not using any at all.
 2019-10-13 09:02:04 +02:00
Roberto E. Vargas Caballero c0280c607f backup: Set execution bits in backup scripts 2019-10-13 10:20:10 +02:00
cinap_lenrek e38f75fc45 ether82563: fix multicast for i210 
MTA has 128 entries, according to section 8.10.15 in the datasheet.
this fixes ipv6 in apu2 which has 3x i210 (8086/157b).
 2019-10-11 21:38:12 +02:00
Ori Bernstein 7367b8d2e7 Fetch IMAP flags from server. This makes us sync read/answered/... flags with unix. 2019-10-10 11:52:22 -07:00
Ori Bernstein e3a43c4f2b awk: make empty FS unicodely-correct. 2019-10-09 17:36:02 -07:00