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ircd::mods::ldso: Simplify and extend interface functionality.

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This commit is contained in:
Jason Volk 2019-05-29 15:41:43 -07:00
parent 0fd7dd998f
commit 28f86802d2
3 changed files with 36 additions and 14 deletions
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10
include/ircd/mods/ldso.h
View file

@ -24,9 +24,11 @@ extern "C"
/// Platform-dependent interface on ELF+ld.so supporting compilations.
namespace ircd::mods::ldso
{
using link_map_closure = std::function<bool (struct link_map &)>;
using link_name_closure = std::function<bool (const string_view &)>;
using link_closure = std::function<bool (struct link_map &)>;
bool for_each(const link_map_closure &);
bool for_each(const link_name_closure &);
string_view name(const struct link_map &);
bool for_each(const link_closure &);
bool has(const string_view &name);
size_t count();
}

34
ircd/mods_ldso.cc
View file

@ -20,18 +20,32 @@
// mods/ldso.h
//
bool
ircd::mods::ldso::for_each(const link_name_closure &closure)
size_t
ircd::mods::ldso::count()
{
return !for_each(link_map_closure{[&closure]
(struct link_map &map)
size_t ret(0);
for_each([&ret](const struct link_map &)
{
return closure(map.l_name);
}});
++ret;
return true;
});
return ret;
}
bool
ircd::mods::ldso::for_each(const link_map_closure &closure)
ircd::mods::ldso::has(const string_view &name)
{
return !for_each([&name]
(const auto &link)
{
// false to break
return name == ldso::name(link)? false : true;
});
}
bool
ircd::mods::ldso::for_each(const link_closure &closure)
{
auto *map
{
@ -51,6 +65,12 @@ ircd::mods::ldso::for_each(const link_map_closure &closure)
return true;
}
ircd::string_view
ircd::mods::ldso::name(const struct link_map &map)
{
return map.l_name;
}
///////////////////////////////////////////////////////////////////////////////
//
// Symbolic dl-error redefinition to throw our C++ exception for the symbol

6
modules/console.cc
View file

@ -1603,14 +1603,14 @@ console_cmd__mod__unload(opt &out, const string_view &line)
}
bool
console_cmd__mod__link_map(opt &out, const string_view &line)
console_cmd__mod__links(opt &out, const string_view &line)
{
size_t i(0);
mods::ldso::for_each([&out, &i]
(const string_view &name)
(const auto &link)
{
out << std::setw(2) << (i++)
<< " " << name
<< " " << mods::ldso::name(link)
<< std::endl;
return true;