minix/fs/ext2/stadir.c

   1 /* Created (MFS based):
   2  *   February 2010 (Evgeniy Ivanov)
   3  */
   4
   5 #include "fs.h"
   6 #include <string.h>
   7 #include <sys/stat.h>
   8 #include <sys/statvfs.h>
   9 #include "inode.h"
  10 #include "super.h"
  11
  12
  13 /*===========================================================================*
  14  *                             fs_stat                                       *
  15  *===========================================================================*/
  16 int fs_stat(ino_t ino_nr, struct stat *statbuf)
  17 {
  18   struct inode *rip;
  19   mode_t mo;
  20   int s;
  21
  22   if ((rip = get_inode(fs_dev, ino_nr)) == NULL)
  23         return(EINVAL);
  24
  25   /* Update the atime, ctime, and mtime fields in the inode, if need be. */
  26   if (rip->i_update) update_times(rip);
  27
  28   /* Fill in the statbuf struct. */
  29   mo = rip->i_mode & I_TYPE;
  30
  31   /* true iff special */
  32   s = (mo == I_CHAR_SPECIAL || mo == I_BLOCK_SPECIAL);
  33
  34   statbuf->st_mode = rip->i_mode;
  35   statbuf->st_nlink = rip->i_links_count;
  36   statbuf->st_uid = rip->i_uid;
  37   statbuf->st_gid = rip->i_gid;
  38   statbuf->st_rdev = (s ? (dev_t)rip->i_block[0] : NO_DEV);
  39   statbuf->st_size = rip->i_size;
  40   statbuf->st_atime = rip->i_atime;
  41   statbuf->st_mtime = rip->i_mtime;
  42   statbuf->st_ctime = rip->i_ctime;
  43   statbuf->st_blksize = rip->i_sp->s_block_size;
  44   statbuf->st_blocks = rip->i_blocks;
  45
  46   put_inode(rip);               /* release the inode */
  47
  48   return(OK);
  49 }
  50
  51 /*===========================================================================*
  52  *                             fs_statvfs                                    *
  53  *===========================================================================*/
  54 int fs_statvfs(struct statvfs *st)
  55 {
  56   struct super_block *sp;
  57
  58   sp = get_super(fs_dev);
  59
  60   st->f_flag = ST_NOTRUNC;
  61   st->f_bsize =  sp->s_block_size;
  62   st->f_frsize = sp->s_block_size;
  63   st->f_iosize = sp->s_block_size;
  64   st->f_blocks = sp->s_blocks_count;
  65   st->f_bfree = sp->s_free_blocks_count;
  66   st->f_bavail = sp->s_free_blocks_count - sp->s_r_blocks_count;
  67   st->f_files = sp->s_inodes_count;
  68   st->f_ffree = sp->s_free_inodes_count;
  69   st->f_favail = sp->s_free_inodes_count;
  70   st->f_namemax = EXT2_NAME_MAX;
  71
  72   return(OK);
  73 }