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Add logging to root ctx, add msgb ctx to root ctx, free wqueue to simulate the
msgb being sent, and assert final talloc size.
Change-Id: Ief3d5e7b6c4d781b3854e230e45a67d5281b94cd
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The CTRL interface has a ctrl_cmd_def_* API that allows deferring a CTRL
command reply until later. However, the command handling currently fails to
acknowledge this and deallocates the struct ctrl_cmd anyway.
Fix: in struct ctrl_cmd, add a defer pointer to be populated by
ctrl_cmd_def_make(). A cmd thus marked as deferred is not deallocated at the
end of command handling. This fix needs no change in calling code.
(Another idea was to return a different code than CTRL_CMD_HANDLED when the
command is to be deferred, but that would require adjusting each user of
ctrl_cmd_def_make(). The implicit marking is safer and easier.)
Show that handling deferred commands is fixed by adjusting the expectations of
ctrl_test.c's test_deferred_cmd() and removing the now obsolete exit_early
label.
One symptom of the breakage is that osmo-bts-sysmo crashes when asked to report
a trx's clock-info, which is aggravated by the fact that the sysmobts-mgr does
ask osmo-bts-sysmo for a clock-info.
The crash appears since Id583b413f8b8bd16e5cf92a8a9e8663903646381 -- it looked
like just fixing an obvious memory leak, which it did as shown by the unit
test, but deferred ctrl commands actually relied on that leak. Both fixed now.
Related: OS#3120
Change-Id: I24232be7dcf7be79f4def91ddc8b8f8005b56318
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Handling a deferred command currently deallocates the struct ctrl_cmd upon
exiting the initial command handling, while it should actually stay around for
the asynchronous/deferred handling of the ctrl command.
Show the current bug by means of a ctrl test. The test will be adjusted to
expect the correct result when the bug is fixed in a subsequent commit
(I24232be7dcf7be79f4def91ddc8b8f8005b56318).
Change-Id: Ibbc847fc583bdd8e5e53a008258805e634ea12b4
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Validate that incoming CTRL commands...
- have decimal IDs,
- return error on trailing characters,
- have invalid characters in variable identifiers,
- send detailed error messages as reply to the requestor.
Adjust ctrl_test.{c,ok}, which best show the change in behavior.
Message handling causes log messages on stderr; previously, stderr was empty.
Add '[ignore]' in testsuite.at so that the nonempty stderr doesn't cause test
failures.
Change-Id: I96a9b6b6a3a5e0b80513aa9eaa727ae8c9c7d7a1
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The recently added ctrl_cmd_parse2() returns non-NULL cmd with error messages
upon parsing errors. In handle_control_read(), use ctrl_cmd_parse2() and send
those back to the CTRL command sender as reply.
Retain the previous "Command parser error" reply only in case ctrl_cmd_parse2()
should return NULL, which shouldn't actually happen at all.
Change-Id: Ie35a02555b76913bb12734a76fc40fde7ffb244d
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Change-Id: Id11bc326be2f0bc2746a928354e416495a18baf7
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In ctrl_handle_msg() (code recently propagated from handle_control_read()),
talloc_free() the parsed ctrl_cmd in all code paths. In particular, a free was
missing in case ctrl_cmd_handle() returns CTRL_CMD_HANDLED.
CTRL_CMD_HANDLED is triggered by GET_REPLY / SET_REPLY parsing, as show by
ctrl_test.c. With the memleak fixed, adjust expected test output and make a
detected mem leak abort the test immediately.
Change-Id: Id583b413f8b8bd16e5cf92a8a9e8663903646381
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The "memleak!" output shows messages that lack a talloc_free() of the parsed
ctrl command buffer. The leak shall be fixed in a subsequent patch.
Change-Id: I2c3e4d08b769b9cd77593362ea36a28d681cd042
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Subsequent patches that tighten CTRL input validation will make the results
more interesting.
Change-Id: Idd4cc7d193db1a7d761f72ed33ed46eea450a78f
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Change-Id: I12d3828dcc925f97fde11c360f1d60f3bd8cad8b
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This uncovers some interesting behavior of the CTRL interface which we may want
to guard against in subsequent patches: trailing whitespace, ignored tokens,
special characters as cmd->id.
Change-Id: If7af06d50ca71fd528b08cd70310774d5a53f0f7
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According to GCC's online docs:
When an inline function is not static, then the compiler must
assume that there may be calls from other source files; since
a global symbol can be defined only once in any program, the
function must not be defined in the other source files, so the
calls therein cannot be integrated. Therefore, a non-static
inline function is always compiled on its own in the usual fashion.
There is no any (performance or size) benefit from 'inline' keyword
in this particular file, so let's replace one by 'static'.
Change-Id: I11e1f1cfea09c6f0cf8225239e782b551d3eb52f
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Don't use CTRL_TYPE_UNKNOWN as value_string[] terminator, use an explicit, more
obvious { 0, NULL } termination. Set an explicit string for CTRL_TYPE_UNKNOWN.
No other value_string[]s to date have such a "hidden" terminator.
BTW, a { 0, "string" } item is not a terminator, only { 0, NULL } is, so we can
set a string for CTRL_TYPE_UNKNOWN == 0.
Also, having a string value for CTRL_TYPE_UNKNOWN is not harmful because all
code paths explicitly check for the CTRL_TYPE_*s that are valid.
Adjust the test expectation.
From the ctrl_type_vals enum, remove the = 0, because it is implicitly 0
anyway.
One motivation to press this fixup: I am trying to add a script that checks
whether all value_string[]s are terminated to our jenkins jobs, and to find
that this one is terminated, it would need to interpret the CTRL_TYPE_UNKNOWN
constant, which would make things far more complex. At this point, all of the
value_string[]s have an explicit termination, and I would like to enforce this
from now on -- for readable code and to not spend more time on the validator.
The patch adding ctrl_type_vals (Icd4e96dd9f00876cb70b43cfcf42ab4f10311b28) was
accepted by another reviewer before I could reconfirm my -1, so this is a fixup
to enable the termination checking script patches.
Related: I2bc93ab4781487e7685cfb63091a489cd126b1a8 (adds script to libosmocore)
I7fe3678b524d602fc6aa14bc0ed06308df809a3e (uses in jenkins.sh)
Icd4e96dd9f00876cb70b43cfcf42ab4f10311b28 (adds ctrl_type_vals)
Change-Id: Ia99f37464c7b36b587da2cc78f52c82725f02cbc
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Use value_string for enum ctrl_type instead of custom code. Add
corresponding unit tests.
Related: OS#1615
Change-Id: Icd4e96dd9f00876cb70b43cfcf42ab4f10311b28
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