init.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <sys/types.h>
   5 #include <sys/mount.h>
   6 #include <string.h>
   7 #include <ftw.h>
   8
   9 #include "log.h"
  10 #include "device.h"
  11
  12
  13 void open_devnull_stdio(void)
  14 {
  15         int fd;
  16         static const char *name = "/dev/__null__";
  17         if (mknod(name, S_IFCHR | 0600, (1 << 8) | 3) == 0) {
  18                 fd = open(name, O_RDWR);
  19                 unlink(name);
  20                 if (fd >= 0) {
  21                         dup2(fd, 0);
  22                         dup2(fd, 1);
  23                         dup2(fd, 2);
  24                         if (fd > 2) {
  25                                 close(fd);
  26                         }
  27                         return;
  28                 }
  29         }
  30         exit(1);
  31 }
  32
  33
  34 int printfile(const char*fpath, const struct stat *sb, int typeflag) {
  35         INFO("%s", fpath);
  36         switch(typeflag) {
  37                 case FTW_F:
  38                         INFO("\n");
  39                         break;
  40                 case FTW_D:
  41                         INFO("/\n");
  42                         break;
  43                 case FTW_DNR:
  44                 case FTW_NS:
  45                         INFO("--SOME THING WRONG\n");
  46                         break;
  47         }
  48         return 0;
  49 }
  50
  51 int main(int argc, char **argv)
  52 {
  53         printf("****************************init start****************************\n");
  54         int device_fd = -1;
  55
  56         umask(0);
  57         open_devnull_stdio();
  58         log_init();
  59
  60         mkdir("/dev", 0755);
  61         mkdir("/sys", 0755);
  62         mount("sysfs", "/sys", "sysfs", 0, NULL);
  63         /*
  64            mkdir("/proc", 0755);
  65
  66            mount("tmpfs", "/dev", "tmpfs", 0, "mode=0755");
  67            mkdir("/dev/pts", 0755);
  68            mkdir("/dev/socket", 0755);
  69            mount("devpts", "/dev/pts", "devpts", 0, NULL);
  70            mount("proc", "/proc", "proc", 0, NULL);
  71            */
  72
  73         INFO("device init\n");
  74         device_fd = device_init();
  75
  76         /*char buf[512];
  77         memset(buf, 0, 512);
  78         read(0, buf, 511);
  79         printf(buf);*/
  80         ftw("/dev", printfile, 1000);
  81
  82         INFO("****************************init start****************************\n");
  83         sleep(5000000);
  84
  85         return 0;
  86 }