mirror of
https://github.com/ish-app/ish.git
synced 2026-01-18 13:57:29 +00:00
088e7b727d
Also a bunch of somewhat related changes, I was too lazy to break this into more than one commit
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
#include <signal.h>
|
|
#include <string.h>
|
|
#include <sys/stat.h>
|
|
#include "kernel/init.h"
|
|
#include "kernel/calls.h"
|
|
#include "fs/fd.h"
|
|
#include "fs/tty.h"
|
|
|
|
int mount_root(const struct fs_ops *fs, const char *source) {
|
|
char source_realpath[MAX_PATH + 1];
|
|
if (realpath(source, source_realpath) == NULL)
|
|
return errno_map();
|
|
int err = do_mount(fs, source_realpath, "");
|
|
if (err < 0)
|
|
return err;
|
|
return 0;
|
|
}
|
|
|
|
static struct tgroup *init_tgroup() {
|
|
struct tgroup *group = malloc(sizeof(struct tgroup));
|
|
if (group == NULL)
|
|
return NULL;
|
|
*group = (struct tgroup) {};
|
|
list_init(&group->threads);
|
|
lock_init(&group->lock);
|
|
cond_init(&group->child_exit);
|
|
cond_init(&group->stopped_cond);
|
|
return group;
|
|
}
|
|
|
|
void create_first_process() {
|
|
extern void sigusr1_handler(int sig);
|
|
struct sigaction sigact;
|
|
sigact.sa_handler = sigusr1_handler;
|
|
sigact.sa_flags = 0;
|
|
sigemptyset(&sigact.sa_mask);
|
|
sigaddset(&sigact.sa_mask, SIGUSR1);
|
|
sigaction(SIGUSR1, &sigact, NULL);
|
|
signal(SIGPIPE, SIG_IGN);
|
|
|
|
current = task_create_(NULL);
|
|
current->mm = mm_new();
|
|
current->mem = current->cpu.mem = ¤t->mm->mem;
|
|
struct tgroup *group = init_tgroup();
|
|
list_add(&group->threads, ¤t->group_links);
|
|
group->leader = current;
|
|
current->group = group;
|
|
current->tgid = current->pid;
|
|
|
|
struct fs_info *fs = fs_info_new();
|
|
current->fs = fs;
|
|
fs->pwd = fs->root = generic_open("/", O_RDONLY_, 0);
|
|
fs->pwd->refcount = 2;
|
|
fs->umask = 0022;
|
|
current->files = fdtable_new(3);
|
|
current->sighand = sighand_new();
|
|
for (int i = 0; i < RLIMIT_NLIMITS_; i++)
|
|
group->limits[i].cur = group->limits[i].max = RLIM_INFINITY_;
|
|
// python subprocess uses this limit as a way to close every open file
|
|
group->limits[RLIMIT_NOFILE_].cur = 1024;
|
|
current->thread = pthread_self();
|
|
sys_setsid();
|
|
}
|
|
|
|
int create_stdio(struct tty_driver *driver) {
|
|
// I can't wait for when init and udev works and I don't need to do this
|
|
tty_drivers[TTY_CONSOLE_MAJOR] = driver;
|
|
|
|
// FIXME use generic_open (or something) to avoid this mess
|
|
struct fd *fd = adhoc_fd_create(NULL);
|
|
fd->stat.rdev = dev_make(4, 0);
|
|
fd->stat.mode = S_IFCHR | S_IRUSR;
|
|
fd->flags = O_RDWR_;
|
|
int err = dev_open(4, 0, DEV_CHAR, fd);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
fd->refcount = 3;
|
|
current->files->files[0] = fd;
|
|
current->files->files[1] = fd;
|
|
current->files->files[2] = fd;
|
|
return 0;
|
|
}
|
|
|