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- #include <sys/mount.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <sys/sysmacros.h>
- #include <stdio.h>
- #include <fcntl.h>
- #include <unistd.h>
- #include <stdlib.h>
- #include "../utils/utils.h"
- #include "init.h"
- #include "../libc-compat.h"
- #include "../container.h"
- static void
- early_dev(void)
- {
- mkdev("*", 0600);
- mknod("/dev/null", 0666, makedev(1, 3));
- }
- static void
- early_console(const char *dev)
- {
- struct stat s;
- if (stat(dev, &s)) {
- ERROR("Failed to stat %s: %m\n", dev);
- return;
- }
- if (patch_stdio(dev)) {
- ERROR("Failed to setup i/o redirection\n");
- return;
- }
- fcntl(STDERR_FILENO, F_SETFL, fcntl(STDERR_FILENO, F_GETFL) | O_NONBLOCK);
- }
- static void
- early_mounts(void)
- {
- unsigned int oldumask = umask(0);
- if (!is_container()) {
- mount("proc", "/proc", "proc", MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RELATIME, NULL);
- mount("sysfs", "/sys", "sysfs", MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RELATIME, NULL);
- mount("efivars", "/sys/firmware/efi/efivars", "efivarfs", MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RELATIME, NULL);
- mount("cgroup2", "/sys/fs/cgroup", "cgroup2", MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RELATIME, "nsdelegate");
- mount("tmpfs", "/dev", "tmpfs", MS_NOEXEC | MS_NOSUID | MS_RELATIME, "mode=0755,size=512K");
- ignore(symlink("/tmp/shm", "/dev/shm"));
- mkdir("/dev/pts", 0755);
- mount("devpts", "/dev/pts", "devpts", MS_NOEXEC | MS_NOSUID | MS_RELATIME, NULL);
- early_dev();
- }
- early_console("/dev/console");
- mount("tmpfs", "/tmp", "tmpfs", MS_NOSUID | MS_NODEV | MS_NOATIME, "mode=01777");
- mkdir("/tmp/shm", 01777);
- mkdir("/tmp/run", 0755);
- mkdir("/tmp/lock", 0755);
- mkdir("/tmp/state", 0755);
- umask(oldumask);
- }
- static void
- early_env(void)
- {
- setenv("PATH", EARLY_PATH, 1);
- }
- void
- early(void)
- {
- if (getpid() != 1)
- return;
- early_mounts();
- early_env();
- LOG("Console is alive\n");
- }
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