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#include <signal.h>
#include <sys/wait.h>
#include <init.h>
#include <util.h>
/* For some reason, I get SIGSEGV'd when running because a random-ass
byte was inserted where it isnt supposed to be. Added a safety byte
because I cannot be asked to try to figure out how to do this cleanly. */
static unsigned long __1bsafebuf
__attribute__((used)) __attribute__((section(".1bsafebuf.init"))) = 0;
/* We start initcall levels at [1] instead of [0], so we must adjust
in code for this minor design choice. Math is done on the level passed
through i.e. do_initcall_level so that you can call it with (1) and have
the expected initcall (l1_initcall) run. */
extern initcall_entry_t __initcall1_start[];
extern initcall_entry_t __initcall2_start[];
extern initcall_entry_t __initcall3_start[];
extern initcall_entry_t __initcall4_start[];
extern initcall_entry_t __initcall5_start[];
extern initcall_entry_t __initcall_end[];
static initcall_entry_t *initcall_levels[] = {
__initcall1_start,
__initcall2_start,
__initcall3_start,
__initcall4_start,
__initcall5_start,
__initcall_end,
};
static void do_initcall_level(int level)
{
initcall_entry_t *fn;
for (fn = initcall_levels[level - 1]; fn < initcall_levels[level]; fn++)
initcall_from_entry(fn)();
}
static void do_initcalls(void)
{
unsigned long level;
for (level = 1; level < ARRAY_SIZE(initcall_levels); level++) {
do_initcall_level(level);
}
}
int main(void)
{
do_initcalls();
/* Reaper. Much like init. */
// BUG: doesnt actually work?? we have defunct processes still
// TODO: fix bug
static sigset_t set;
sigaddset(&set, SIGCHLD);
sigprocmask(SIG_BLOCK, &set, NULL);
while(1) {
int sig;
sigwait(&set, &sig);
if(sig == SIGCHLD)
while(waitpid(0, NULL, WNOHANG) > 0)
;
}
}
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