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Limit max string length in log session for okl4

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This commit also adds a test to test-log.
This commit is contained in:
Christian Helmuth 2017-10-06 16:50:01 +02:00
parent 487162a53d
commit 0da420c104
3 changed files with 30 additions and 3 deletions
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2
repos/base/include/log_session/log_session.h
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@ -44,7 +44,7 @@ struct Genode::Log_session : Session
virtual ~Log_session() { }
/* the lowest platform-specific maximum IPC payload size (OKL4) */
enum { MAX_STRING_LEN = 236};
enum { MAX_STRING_LEN = 232 };
typedef Rpc_in_buffer<MAX_STRING_LEN> String;

7
repos/base/run/log.run
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@ -27,7 +27,7 @@ append xen_args { sdl="0" }
run_genode_until "Test done.*\n" 20
grep_output {\[init -\> test-log\]}
grep_output {\[init -\> test-log}
compare_output_to {
[init -> test-log] hex range: [0e00,1680)
@ -38,5 +38,10 @@ compare_output_to {
[init -> test-log] positive hex char: 0x02
[init -> test-log] multiarg string: "parent -> child.7"
[init -> test-log] String(Hex(3)): 0x3
[init -> test-log] Very long messages:
[init -> test-log -> log] 1.....................................................................................................................................................................................................................................2
[init -> test-log] 3.....................................................................................................................................................................................................................................4
[init -> test-log] 5.....................................................................................................................................................................................................................................6
[init -> test-log]
[init -> test-log] Test done.
}

24
repos/base/src/test/log/main.cc
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@ -1,5 +1,5 @@
/*
* \brief Testing 'log()' with negative integer
* \brief Testing 'Genode::log()' and LOG session
* \author Christian Prochaska
* \date 2012-04-20
*
@ -14,6 +14,7 @@
#include <base/component.h>
#include <base/log.h>
#include <log_session/connection.h>
void Component::construct(Genode::Env &env)
@ -33,5 +34,26 @@ void Component::construct(Genode::Env &env)
String<32> hex(Hex(3));
log("String(Hex(3)): ", hex);
log("Very long messages:");
static char buf[2*Log_session::MAX_STRING_LEN];
/* test writing of message with length = MAX_STRING_LEN with LOG connection */
for (char &c : buf) c = '.';
buf[0] = '1'; /* begin of line */
buf[Log_session::MAX_STRING_LEN - 2] = '2'; /* last visible */
buf[Log_session::MAX_STRING_LEN - 1] = '\0'; /* end of line */
Log_connection log_connection { env, "log" };
log_connection.write(buf);
/* test splitting of message with length > MAX_STRING_LEN with 'Genode::log()' */
for (char &c : buf) c = '.';
buf[0] = '3'; /* begin of first line */
buf[Log_session::MAX_STRING_LEN - 2] = '4'; /* last visible before flushed */
buf[Log_session::MAX_STRING_LEN - 1] = '5'; /* first after flush */
buf[2*Log_session::MAX_STRING_LEN - 3] = '6'; /* last visible before flushed */
buf[2*Log_session::MAX_STRING_LEN - 2] = '\0'; /* end of second line */
log(Cstring(buf));
log("Test done.");
}