Commit Graph

253 Commits

Author SHA1 Message Date
Giacomo Tesio 65cdad4317 libc: rewrite putenv and getenv.
These new implementations

- do several validity check on input parameters
- allow a bit larger variable names (127 bytes, aka sizeof(Proc.genbuf)-1)
- preserve nulls in the content (the original version used to replace
  '\0' with ' '). I can't see why they did, actually.
  See also http://marc.info/?l=9fans&m=148475801229908&w=2

Should also fix CID 155718
2017-01-19 00:58:43 +01:00
Giacomo Tesio d43be3861b libc: fix potential nil dereference in system() posix wrapper
Should also fix CID 155750.
2017-01-18 23:36:18 +01:00
Giacomo Tesio b05c21397e libc: rewrite brk() and sbrk()
Also fix Coverity 1 scan defects, CID 155773 and CID 155768, removing
less-than-zero comparisons of unsigned values that were never true.
2017-01-18 23:35:41 +01:00
Giacomo Tesio 6e816b293d libmp: fix #6: mptole takes `p` xor `pp`
See commit 0f82a2c3c3 for further info

Also fix build after typo.
2017-01-18 01:59:44 +01:00
Giacomo Tesio 0f82a2c3c3 libmp: fix #5: mptole takes `p` xor `pp`
According to http://man.cat-v.org/9front/2/mp mptole either take p or pp:

> Mptobe and mptole convert an mpint to a byte array.  The
> former creates a big endian representation, the latter a
> little endian one.  If the destination buf is not nil, it
> specifies the buffer of length blen for the result.  If the
> representation is less than blen bytes, the rest of the
> buffer is zero filled.  **If buf is nil**, then a buffer is
> allocated and a pointer to it is deposited in the location
> pointed to by **bufp**. Sign is ignored in these conversions,
> i.e., the byte array version is always positive.

Assert accordingly.
2017-01-18 01:47:31 +01:00
Giacomo Tesio 90fe80e73b libsec: fix #4: Finished.n can only be 0, 12 or 36
As noted ty Cinap Lenrek Finished.n is only set by setVersion and can only
be either 0 before setVersion() as emalloc() zeros the TlsConnection struct
or SSL3FinishedLen/TLSFinishedLen after when we got the client/server hello.

Introducing FinishedLength enum we make the domain of the field explicit.
2017-01-18 00:24:10 +01:00
Giacomo Tesio 49040ffdaa kernel: boot: fix dup() leaks reported by coverity 2017-01-17 22:01:15 +01:00
Giacomo Tesio e1a14b49be kernel: devdup: fix dup(n, 0)
A successful dup(n, 0) must not return -1L
2017-01-17 21:48:33 +01:00
Giacomo Tesio 207967f9e8 libc: _assert do not return. should fix build 2017-01-17 21:28:56 +01:00
Giacomo Tesio 04962f0637 libsec: fix #3: out-of-bound access in aesXCBCmac (CID 155914) 2017-01-17 21:05:59 +01:00
Giacomo Tesio 90f3d2ce31 lib9p2000: cleanup redundant checks in convM2S
CID 49221 (#1 of 1): Identical code for different branches (IDENTICAL_BRANCHES)
identical_branches: The same code is executed when the condition p == NULL is true or false, because the code in the if-then branch and after the if statement is identical. Should the if statement be removed?
2017-01-17 21:05:15 +01:00
Giacomo Tesio 663b002529 libsec: mark DigestState as stack var in ccpoly_*
CID 160099 and CID 160100 (#1 of 1): Free of address-of expression (BAD_FREE)
address_free: ccpolylen frees address of ds
2017-01-17 21:04:15 +01:00
Giacomo Tesio 3cfe366cc0 libsec: fix out of bound write (CID 155904)
In aesXCBCmac fix (potential) out of bound write in padding.

CID 155904 (#1 of 1): Out-of-bounds write (OVERRUN)
7. overrun-local: Overrunning array of 16 bytes at byte offset 16 by dereferencing pointer p2++.
2017-01-17 21:03:32 +01:00
Giacomo Tesio 06376d5859 libc.h: mark _assert as noreturn
Indeed the `assert` macro calls the _assert function only when the assertion failed.
2017-01-17 21:02:30 +01:00
Giacomo Tesio 6daa49324a kernel: umem: fix frees in segments_fill
CID 155453 (#1 of 1): Free of address-of expression (BAD_FREE)
address_free: free frees address of (segments + 0).pages.
2017-01-17 00:26:23 +01:00
Giacomo Tesio 20f15cbe5a kernel: fix not null terminated string in options()
CID 155471 (#1 of 1): Buffer not null terminated (BUFFER_SIZE_WARNING)67.
buffer_size_warning: Calling strncpy with a maximum size argument of 256 bytes on destination array envcopy of size 256 bytes might leave the destination string unterminated.
2017-01-17 00:18:18 +01:00
Giacomo Tesio 41a9489dd4 libsec: fix des56to64 access to key array
CID 155910 (#1 of 1): Out-of-bounds access (OVERRUN)1.

overrun-buffer-val: Overrunning buffer pointed to by key of 7 bytes by passing it to a function which accesses it at byte offset 63.
2017-01-17 00:01:08 +01:00
Giacomo Tesio e2b5953d99 libc: handle positive fd on "always-failing" creates (brk and dup) 2017-01-16 23:53:05 +01:00
Giacomo Tesio 042e206d13 kernel: devrtc: fix use of uninitialized array in rtcextract
CID 156229: Uninitialized scalar variable (UNINIT)9.
uninit_use: Using uninitialized value bcdclock[0].
2017-01-16 02:00:10 +01:00
Giacomo Tesio 237b7709ae kernel: umem: fix use of uninitialized fptr in freelist_pop
CID 156230 (#1 of 1): Uninitialized pointer read (UNINIT)9.
uninit_use: Using uninitialized value fptr.
2017-01-15 01:59:41 +01:00
Giacomo Tesio 1cb4610ed2 kernel: udp: fix read of uninitialized array
CID 156231 (#1 of 1): Uninitialized scalar variable (UNINIT)6.
uninit_use_in_call: Using uninitialized element of array laddr when calling memcmp.
2017-01-15 01:35:28 +01:00
Giacomo Tesio f2f95a935f kernel: fix use of uninitialized value in freelist_pop
CID 156233 (#1 of 1): Uninitialized pointer read (UNINIT)5. uninit_use: Using uninitialized value fimg.
2017-01-15 01:03:35 +01:00
Giacomo Tesio c4fb99ec38 qa: fix a few issues detected by coverity 2017-01-14 17:58:33 +01:00
Giacomo Tesio d4157c7e24 improve README.md and LICENSE.md 2017-01-14 12:39:05 +01:00
Giacomo Tesio 87a1c929ea doc: draft coding style 2017-01-12 23:19:02 +01:00
Giacomo Tesio 0de2dfc95b kernel: fix /dev/swap and `stats -m` 2017-01-12 00:41:14 +01:00
Giacomo Tesio 4e8d766fe8 doc: drafted hacking/overview.md 2017-01-12 00:41:01 +01:00
Giacomo Tesio d1cc947cd9 kernel: fix fd mode print in devproc 2017-01-12 00:39:50 +01:00
Giacomo Tesio e93aafc028 qa: build everything with -Werror 2017-01-12 00:38:56 +01:00
Giacomo Tesio 51d12f1f34 kernel: fix #0/brk/ qid (it's a special directory, not a special file) 2017-01-09 00:44:01 +01:00
Giacomo Tesio 01562d4ddb qa: rfork(RFNAMEG) on tests that are going to rfork(RFNOMNT) later 2017-01-06 23:04:04 +01:00
Giacomo Tesio 6872a8483b devtools: continuous-build.sh: restore toolchain cache in travis-ci 2017-01-06 18:49:12 +01:00
Giacomo Tesio d7d987c746 devtools: update 2017-01-06 03:48:47 +01:00
Giacomo Tesio a8e2247e20 kernel: drop SysNsec references from syscall() 2017-01-06 01:40:04 +01:00
Giacomo Tesio 4676c65a3d kernel: move nsec to libc 2017-01-06 00:56:22 +01:00
Giacomo Tesio 2508de40ea kernel: move sysdup to libc 2017-01-06 00:56:22 +01:00
Giacomo Tesio 882e33b091 qa: fix warnings 2017-01-06 00:54:42 +01:00
Giacomo Tesio c342234d74 kernel: print faults to process standard error 2017-01-06 00:54:04 +01:00
Giacomo Tesio 410e6d1fa1 cflags: set --sysroot=$JEHANNE 2017-01-06 00:53:25 +01:00
Giacomo Tesio d24c2b3606 rio: fix wloc call to sys/call 2017-01-04 23:34:44 +01:00
Giacomo Tesio e8562ff537 cmd/pict: import 9front's graphical tools 2017-01-03 22:31:09 +01:00
Giacomo Tesio 890f126abc kernel: fix usb after changing OREAD/OWRITE values
OREAD and OWRITE are used as array indexes assuming that OREAD was zero
and OWRITE was one. Thus each related allocation reserved just 2 slot and
even Ep struct in usb.h reserved just 2 int for toggles.

Since OREAD is now 1 and OWRITE is 2 we have to allocate/reserve 3 slot
as long as we use them as array indexes (which we could change in the future).

Unfortunately this means we waste the index zero in those arrays that will
always be unused. This also means that, to loop in such arrays we must begin
with OREAD as index zero is always empty.

PRO-MEMORIA: if/when we introduce the walk() syscall, OSTAT might turn useless.
In that case we might remove it and thus consider to move back OREAD/OWRITE
to 0/1 respectively (which might or might not be a good idea, to be analyzed).
2017-01-03 01:27:08 +01:00
Giacomo Tesio c1eb65b35e kernel: move null and zero from #c to #0 2017-01-03 01:27:08 +01:00
Giacomo Tesio 8e7f47c743 kernel/boot: bind #0 wherever #c is bound 2017-01-03 01:27:08 +01:00
Giacomo Tesio ac15346de7 kernel: make #0/pid, #0/ppid and #0/pgrpid readable 2017-01-03 01:27:07 +01:00
Giacomo Tesio da77086023 mount: update dev9p name (#9 instead of #M) 2016-12-31 17:19:40 +01:00
Giacomo Tesio ba80ac9649 lib/namespace: bind #0 to /dev 2016-12-31 00:46:34 +01:00
Giacomo Tesio 37541724d0 kernel: add #0/brk and move brk_() to libc 2016-12-31 00:43:02 +01:00
Giacomo Tesio 0bbd79e0a5 kernel: waitdebugger on lapictimerset if apic->div == 0 2016-12-26 02:18:19 +01:00
Giacomo Tesio 71ea62eb5b rm -e prints the return value of remove syscalls
Some devices return useful info on specific file remove (eg #0/pid, #0/ppid...)
so we need a tool to get such info.

	rm -e '#0/pid' '#0/ppid'
	#0/pid 65
	#0/ppid 59
2016-12-26 02:18:19 +01:00