This rotates through fds explicitly, to avoid unfairness.
This doesn't really make a difference until we start using it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We fix the configure test which was bogus, and breaks on 32-bit gcc with optimization:
```
checking for unaligned access to int... ccan/tools/configurator/configurator: Test for HAVE_UNALIGNED_ACCESS did not compile:
configuratortest.c: In function 'main':
configuratortest.c:8:22: error: array subscript 'int[0]' is partly outside array bounds of 'char[4]' [-Werror=array-bounds]
8 | return *x == *y;
| ^~
configuratortest.c:5:11: note: at offset 1 into object 'pad' of size 4
5 | char pad[sizeof(int *) * 1];
| ^~~
cc1: all warnings being treated as errors
```
And also removes sprintf() calls, which apparently MacOS no longer likes:
Environment: Sequoia 15.6.1 (24G90)
SDK Version: MacOSX15.sdk
```
ccan/ccan/closefrom/closefrom.c:83:2: error: 'sprintf' is deprecated: This function is provided for compatibility reasons only. Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Werror,-Wdeprecated-declarations]
83 | sprintf(dnam, "/proc/%ld/fd", (long) getpid());
| ^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/_stdio.h:278:1: note: 'sprintf' has been explicitly marked deprecated here
278 | deprecated_msg("This function is provided for compatibility reasons only. Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
| ^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/cdefs.h:218:48: note: expanded from macro 'deprecated_msg'
218 | #define deprecated_msg(_msg) attribute((deprecated(_msg)))
| ^
ccan/ccan/closefrom/closefrom.c:162:2: error: 'sprintf' is deprecated: This function is provided for compatibility reasons only. Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Werror,-Wdeprecated-declarations]
162 | sprintf(dnam, "/proc/%ld/fd", (long) getpid());
| ^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/_stdio.h:278:1: note: 'sprintf' has been explicitly marked deprecated here
278 | deprecated_msg("This function is provided for compatibility reasons only. Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
| ^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/cdefs.h:218:48: note: expanded from macro 'deprecated_msg'
218 | #define deprecated_msg(_msg) attribute((deprecated(_msg)))
| ^
2 errors generated.
make: *** [ccan-closefrom.o] Error 1
```
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reported-by: Sangbida
Fixes: https://github.com/ElementsProject/lightning/issues/8581
Reported-by: https://github.com/Raimo33
Fixes: https://github.com/ElementsProject/lightning/issues/8501
Changelog-Fixed: build: we now build on MacOS without errors on the latest Command Line Tools (macOS 15 SDK).
Changelog-Fixes: build: fix build with -O2 on 32 bit arm (armhf)
Changelog-Fixed: Protocol: fix occasional lost sending of final packet (usually warnings or errors).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The updated API requires typed htables to explicitly state whether they
allow duplicates: for most cases we don't, but we've had issues in the
past.
This is a big patch, but mainly mechanical.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Theoretical only, but we could leak an fd if we closed a conn before
the fd was sent. This doesn't happen in our current codebase because
we only hand fds to connectd, which only closes at shutdown.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
A fairly simple change: ccan/io will now call the underlying I/O
routines repeatedly until they indicate they are unfinished, *or* fail
with EAGAIN. This should make a significant difference to large
nodes, which currently spend far too much time calling poll() to
discover a single fd is still writable (mainly, for streaming gossip).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: connectd: now should use far less CPU on large nodes.
```
ccan/ccan/base64/base64.c:34:10: error: result of comparison of constant 255 with expression of type 'int8_t' (aka 'signed char') is always false [-Werror,-Wtautological-constant-out-of-range-compare]
if (ret == (char)0xff) {
~~~ ^ ~~~~~~~~~~
ccan/ccan/base64/base64.c:44:57: error: result of comparison of constant 255 with expression of type 'const signed char' is always true [-Werror,-Wtautological-constant-out-of-range-compare]
return (maps->decode_map[(const unsigned char)b64char] != (char)0xff);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
```
Reported-by: Christian Decker
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This adds:
1. ability to search for an option by name.
2. allowance to set our own bits when registering options.
3. show callbacks which can say "don't show", and variable length.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Most importantly, configurator used to use bitshifts on signed
integers which -fsanitize=undefined caught.
But also, tal played fast and loose with typing and aliases, which was
a signficant amount of rework.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
```
lightningd/jsonrpc.c: In function ‘destroy_json_command’:
lightningd/jsonrpc.c:1180:63: error: the comparison will always evaluate as ‘false’ for the address of ‘canary’ will never be NULL [-Werror=address]
lightningd/jsonrpc.c:108:53: note: ‘canary’ declared here
```
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Which includes not asserting in timer.c should time go backwards.
Fixes: #4401
Changelog-Fixed: lightningd: don't assert if time goes backwards temporarily.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Otherwise we get a configurator failure:
In file included from /usr/include/string.h:495,
from configuratortest.c:2:
In function ‘strncpy’,
inlined from ‘main’ at configuratortest.c:6:2:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:106:10: warning: ‘__builtin_strncpy’ specified bound 8 equals destination size [-Wstringop-truncation]
106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I was wondering why TAGS was missing some functions, and finally
tracked it down: PRINTF_FMT() confuses etags if it's at the start
of a function, and it ignores the rest of the file.
So we put PRINTF_FMT at the end, but that doesn't work for
*definitions*, only *declarations*. So we remove it from definitions
and add gratuitous declarations in the few static places.1
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Dynamic plugins were keeping fds open; they should not have these
at all anyway, but worse, they interfere with operation because
we don't notice they're closed.
The symptom was that shutdown of the test_plugin_slowinit and
test_plugin_command was 30 seconds (10 seconds grace to kill each daemon).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Dumb programs which have a --daemon option call fork() early. This is
terrible UX since startup errors get lost: the program exits with
"success" immediately then you discover via the logs that it didn't
start at all.
However, forking late introduced a heap of problems with changing
pids. Instead, fork early but keep stderr and the parent around: if
we fail early on, the parent fails with us. We release our parent
with an explicit action just before the main loop.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
configurator failed under clang:
checking for #pragma omp and -fopenmp support... ccan/tools/configurator/configurator: Test for HAVE_OPENMP failed with 32512:
./configurator.out: error while loading shared libraries: libomp.so: cannot open shared object file: No such file or directory
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
