lib/libpuffs/stadir.c

   1 /* Created (MFS based):
   2  *   February 2010 (Evgeniy Ivanov)
   3  */
   4
   5 #include "fs.h"
   6 #include <sys/stat.h>
   7 #include <sys/statvfs.h>
   8 #include <minix/vfsif.h>
   9
  10 #include "puffs.h"
  11 #include "puffs_priv.h"
  12
  13
  14 /*===========================================================================*
  15  *                             fs_stat                                       *
  16  *===========================================================================*/
  17 int fs_stat(void)
  18 {
  19   register int r;              /* return value */
  20   register struct puffs_node *pn;  /* target pnode */
  21   struct vattr va;
  22   struct stat statbuf;
  23   pmode_t mo;
  24   int s;
  25   PUFFS_MAKECRED(pcr, &global_kcred);
  26
  27   if (global_pu->pu_ops.puffs_node_getattr == NULL) {
  28         lpuffs_debug("fs_stat: puffs_node_getattr is missing\n");
  29         return(EINVAL);
  30   }
  31
  32   if ((pn = puffs_pn_nodewalk(global_pu, 0, &fs_m_in.REQ_INODE_NR)) == NULL) {
  33         lpuffs_debug("walk failed...\n");
  34         return(EINVAL);
  35   }
  36
  37   if (global_pu->pu_ops.puffs_node_getattr(global_pu, pn, &va, pcr) != 0) {
  38         if (errno) {
  39                 if (errno > 0) errno = -errno;
  40                 return(errno);
  41         }
  42         return(EINVAL);
  43   }
  44
  45   /* Fill in the statbuf struct. */
  46   mo = va.va_mode & I_TYPE;
  47
  48   /* true iff special */
  49   s = (mo == I_CHAR_SPECIAL || mo == I_BLOCK_SPECIAL);
  50
  51   statbuf.st_dev = fs_dev;
  52   statbuf.st_ino = va.va_fileid;
  53   statbuf.st_mode = va.va_mode;
  54   statbuf.st_nlink = va.va_nlink;
  55   statbuf.st_uid = va.va_uid;
  56   statbuf.st_gid = va.va_gid;
  57   statbuf.st_rdev = (s ? va.va_rdev : NO_DEV);
  58   statbuf.st_size = va.va_size;
  59   statbuf.st_atimespec = va.va_atime;
  60   statbuf.st_mtimespec = va.va_mtime;
  61   statbuf.st_ctimespec = va.va_ctime;
  62
  63   statbuf.st_birthtimespec = va.va_birthtime;
  64   statbuf.st_blksize = va.va_blocksize;
  65   statbuf.st_blocks = va.va_bytes / va.va_blocksize;
  66   statbuf.st_flags = va.va_flags;
  67   statbuf.st_gen = va.va_gen;
  68
  69   /* Copy the struct to user space. */
  70   r = sys_safecopyto(fs_m_in.m_source, (cp_grant_id_t) fs_m_in.REQ_GRANT,
  71                      (vir_bytes) 0, (vir_bytes) &statbuf,
  72                      (size_t) sizeof(statbuf));
  73
  74   return(r);
  75 }
  76
  77
  78 /*===========================================================================*
  79  *                             fs_statvfs                                    *
  80  *===========================================================================*/
  81 int fs_statvfs(void)
  82 {
  83   int r;
  84   struct statvfs st;
  85
  86   memset(&st, 0, sizeof(st));
  87
  88   if (global_pu->pu_ops.puffs_fs_statvfs(global_pu, &st) != 0) {
  89         lpuffs_debug("statvfs failed\n");
  90         return(EINVAL);
  91   }
  92
  93   /* XXX libpuffs doesn't truncate filenames and returns ENAMETOOLONG,
  94    * though some servers would like to behave differently.
  95    * See subtest 2.18-19 of test23 and test/common.c:does_fs_truncate().
  96    */
  97   st.f_flag |= ST_NOTRUNC;
  98
  99   /* Copy the struct to user space. */
 100   r = sys_safecopyto(fs_m_in.m_source, fs_m_in.REQ_GRANT, 0, (vir_bytes) &st,
 101                     (phys_bytes) sizeof(st));
 102
 103   return(r);
 104 }