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report_rom: zero-terminate reports

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This commit is contained in:
Norman Feske 2015-06-10 13:19:46 +02:00 committed by Christian Helmuth
parent 7897e52235
commit 68c6052485
1 changed files with 12 additions and 3 deletions
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15
repos/os/src/server/report_rom/rom_module.h
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@ -156,14 +156,23 @@ struct Rom::Module : Module_list::Element
{
_size = 0;
/* realloc backing store if needed */
if (!_ds.is_constructed() || _ds->size() < src_len)
_ds.construct(Genode::env()->ram_session(), src_len);
/*
* Realloc backing store if needed
*
* Take a terminating zero into account, which we append to each
* report. This way, we do not need to trust report clients to
* append a zero termination to textual reports.
*/
if (!_ds.is_constructed() || _ds->size() < (src_len + 1))
_ds.construct(Genode::env()->ram_session(), (src_len + 1));
/* copy content into backing store */
_size = src_len;
Genode::memcpy(_ds->local_addr<char>(), src, _size);
/* append zero termination */
_ds->local_addr<char>()[src_len] = 0;
/* notify ROM clients that access the module */
for (Reader const *r = _readers.first(); r; r = r->next())
r->notify_module_changed();