int main(int argc, char **argv)
{
struct NaClApp state, *nap = &state;
struct SystemManifest sys_mft;
struct GioMemoryFileSnapshot main_file;
GTimer *timer;
/* zerovm initialization */
memset(nap, 0, sizeof *nap);
nap->system_manifest = &sys_mft;
memset(nap->system_manifest, 0, sizeof *nap->system_manifest);
gnap = nap;
ParseCommandLine(nap, argc, argv);
NaClSignalHandlerInit();
NaClSyscallTableInit();
/* initialize mem_map and set nap fields to default values */
ZLOGFAIL(NaClAppCtor(nap) == 0, EFAULT, "Error while constructing app state");
/* We use the signal handler to verify a signal took place. */
if(nap->skip_qualification == 0) NaClRunSelQualificationTests();
/* Remove the signal handler if we are not using it. */
if(nap->handle_signals == 0)
{
NaClSignalHandlerFini();
NaClSignalAssertNoHandlers(); /* Sanity check. */
}
/* read nexe into memory */
timer = g_timer_new();
ZLOGFAIL(0 == GioMemoryFileSnapshotCtor(&main_file, nap->system_manifest->nexe),
ENOENT, "Cannot open '%s'. %s", nap->system_manifest->nexe, strerror(errno));
#define TIMER_REPORT(msg) \
do {\
ZLOGS(LOG_DEBUG, msg " took %.3f milliseconds",\
g_timer_elapsed(timer, NULL) * NACL_MICROS_PER_MILLI);\
g_timer_start(timer);\
} while(0)
TIMER_REPORT("GioMemoryFileSnapshotCtor()");
/* validate given nexe (ensure that text segment is safe) */
ValidateNexe(nap);
TIMER_REPORT("ValidateNexe()");
/* validate nexe structure (check elf header and segments) */
ZLOGS(LOG_DEBUG, "Loading nacl file %s", nap->system_manifest->nexe);
NaClAppLoadFile((struct Gio *) &main_file, nap);
TIMER_REPORT("NaClAppLoadFile()");
if(-1 == (*((struct Gio *)&main_file)->vtbl->Close)((struct Gio *)&main_file))
ZLOG(LOG_ERROR, "Error while closing '%s'", nap->system_manifest->nexe);
(*((struct Gio *) &main_file)->vtbl->Dtor)((struct Gio *) &main_file);
/* quit if fuzz testing specified */
if(nap->quit_after_load)
{
SetExitState(OK_STATE);
NaClExit(0);
}
/* setup zerovm from manifest */
SystemManifestCtor(nap);
/* "defence in depth" call */
LastDefenseLine(nap);
/* start accounting */
AccountingCtor(nap);
/* Make sure all the file buffers are flushed before entering the nexe */
fflush((FILE*) NULL);
TIMER_REPORT("nexe start preparation");
/* set user code trap() exit location and switch to the user code */
if(setjmp(user_exit) == 0)
ZLOGFAIL(!NaClCreateMainThread(nap), EFAULT, "switching to nexe failed");
SetExitState(OK_STATE);
TIMER_REPORT("NaClCreateMainThread()");
/* zerovm exit with finalization, report and stuff */
NaClExit(0);
/* Unreachable, but having the return prevents a compiler error. */
return -1;
}
int main(int argc, char **argv)
{
struct NaClApp state, *nap = &state;
struct SystemManifest sys_mft;
struct GioMemoryFileSnapshot main_file;
struct NaClPerfCounter time_all_main;
/* zerovm initialization */
memset(nap, 0, sizeof *nap);
nap->system_manifest = &sys_mft;
memset(nap->system_manifest, 0, sizeof *nap->system_manifest);
gnap = nap;
ParseCommandLine(nap, argc, argv);
NaClSignalHandlerInit();
NaClTimeInit();
NaClSyscallTableInit();
NaClPerfCounterCtor(&time_all_main, "SelMain");
/* initialize mem_map and set nap fields to default values */
ZLOGFAIL(NaClAppCtor(nap) == 0, EFAULT, "Error while constructing app state");
/* We use the signal handler to verify a signal took place. */
if(nap->skip_qualification == 0) NaClRunSelQualificationTests();
/* Remove the signal handler if we are not using it. */
if(nap->handle_signals == 0)
{
NaClSignalHandlerFini();
NaClSignalAssertNoHandlers(); /* Sanity check. */
}
#define PERF_CNT(str) \
NaClPerfCounterMark(&time_all_main, str);\
NaClPerfCounterIntervalLast(&time_all_main);
/* read nexe into memory */
ZLOGFAIL(0 == GioMemoryFileSnapshotCtor(&main_file, nap->system_manifest->nexe),
ENOENT, "Cannot open '%s'. %s", nap->system_manifest->nexe, strerror(errno));
PERF_CNT("SnapshotNaclFile");
/* validate given nexe (ensure that text segment is safe) */
ValidateNexe(nap);
/* validate nexe structure (check elf header and segments) */
ZLOGS(LOG_DEBUG, "Loading nacl file %s", nap->system_manifest->nexe);
NaClAppLoadFile((struct Gio *) &main_file, nap);
PERF_CNT("AppLoadEnd");
if(-1 == (*((struct Gio *)&main_file)->vtbl->Close)((struct Gio *)&main_file))
ZLOG(LOG_ERROR, "Error while closing '%s'", nap->system_manifest->nexe);
(*((struct Gio *) &main_file)->vtbl->Dtor)((struct Gio *) &main_file);
if(nap->quit_after_load) NaClExit(0);
/* setup zerovm from manifest */
SystemManifestCtor(nap); /* needs dyn_array initialized */
/* "defence in depth" call */
LastDefenseLine(nap);
/* start accounting */
AccountingCtor(nap);
/* Make sure all the file buffers are flushed before entering the nexe */
fflush((FILE*) NULL);
/* set user code trap() exit location and switch to the user code */
PERF_CNT("CreateMainThread");
if(setjmp(user_exit) == 0)
ZLOGFAIL(!NaClCreateMainThread(nap), EFAULT, "switching to nexe failed");
SetExitState(OK_STATE);
PERF_CNT("WaitForMainThread");
PERF_CNT("SelMainEnd");
/* zerovm exit with finalization, report and stuff */
NaClExit(0);
/* Unreachable, but having the return prevents a compiler error. */
return -1;
}
