Commit 0a7463bd authored by Marc Vef's avatar Marc Vef
Browse files

Support lgetxattr()

parent 28b5c214

include/client/hooks.hpp

+3 −0
Original line number Diff line number Diff line
@@ -176,6 +176,9 @@ hook_fsync(unsigned int fd); 
int

hook_getxattr(const char* path, const char* name, void* value, size_t size);



int

hook_lgetxattr(const char* path, const char* name, void* value, size_t size);



} // namespace gkfs::hook



#endif

src/client/hooks.cpp

+14 −0
Original line number Diff line number Diff line
@@ -1008,4 +1008,18 @@ hook_getxattr(const char* path, const char* name, void* value, size_t size) { 
                                            size);

}



int

hook_lgetxattr(const char* path, const char* name, void* value, size_t size) {



    LOG(DEBUG, "{}() called with path '{}' name '{}' value '{}' size '{}'",

        __func__, path, name, fmt::ptr(value), size);



    auto normalized_path = gkfs::path::normalize(path);

    if(gkfs::path::is_in_gkfs(normalized_path, true))

        return -ENOTSUP;

    else

        return syscall_no_intercept_wrapper(SYS_lgetxattr, path, name, value,

                                            size);

}



} // namespace gkfs::hook

src/client/intercept.cpp

+7 −0
Original line number Diff line number Diff line
@@ -781,6 +781,13 @@ hook(long syscall_number, long arg0, long arg1, long arg2, long arg3, long arg4, 
                    reinterpret_cast<void*>(arg2), static_cast<size_t>(arg4));

            break;



        case SYS_lgetxattr:

            *result = gkfs::hook::hook_lgetxattr(

                    reinterpret_cast<const char*>(arg0),

                    reinterpret_cast<const char*>(arg1),

                    reinterpret_cast<void*>(arg2), static_cast<size_t>(arg4));

            break;



        default:

            // ignore any other syscalls, i.e.: pass them on to the kernel

            // (syscalls forwarded to the kernel that return are logged in