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/statfs.h>
   8 #include <sys/statvfs.h>
   9 #include <minix/vfsif.h>
  10
  11 #include "puffs.h"
  12 #include "puffs_priv.h"
  13
  14
  15 /*===========================================================================*
  16  *                              fs_fstatfs                                   *
  17  *===========================================================================*/
  18 int fs_fstatfs()
  19 {
  20   int r;
  21   struct statvfs st_vfs;
  22   struct statfs st;
  23
  24   if (global_pu->pu_ops.puffs_fs_statvfs(global_pu, &st_vfs) != 0) {
  25         lpuffs_debug("statfs failed\n");
  26         return(EINVAL);
  27   }
  28
  29   st.f_bsize = st_vfs.f_bsize;
  30
  31   /* Copy the struct to user space. */
  32   r = sys_safecopyto(fs_m_in.m_source, (cp_grant_id_t) fs_m_in.REQ_GRANT,
  33                      (vir_bytes) 0, (vir_bytes) &st, (size_t) sizeof(st));
  34
  35   return(r);
  36 }
  37
  38
  39 /*===========================================================================*
  40  *                             fs_stat                                       *
  41  *===========================================================================*/
  42 int fs_stat()
  43 {
  44   register int r;              /* return value */
  45   register struct puffs_node *pn;  /* target pnode */
  46   struct vattr va;
  47   struct stat statbuf;
  48   mode_t mo;
  49   int s;
  50   PUFFS_MAKECRED(pcr, &global_kcred);
  51
  52   if (global_pu->pu_ops.puffs_node_getattr == NULL) {
  53         lpuffs_debug("fs_stat: puffs_node_getattr is missing\n");
  54         return(EINVAL);
  55   }
  56
  57   if ((pn = puffs_pn_nodewalk(global_pu, 0, &fs_m_in.REQ_INODE_NR)) == NULL) {
  58         lpuffs_debug("walk failed...\n");
  59         return(EINVAL);
  60   }
  61
  62   if (global_pu->pu_ops.puffs_node_getattr(global_pu, pn, &va, pcr) != 0) {
  63         if (errno) {
  64                 if (errno > 0) errno = -errno;
  65                 return(errno);
  66         }
  67         return(EINVAL);
  68   }
  69
  70   /* Fill in the statbuf struct. */
  71   mo = va.va_mode & I_TYPE;
  72
  73   /* true iff special */
  74   s = (mo == I_CHAR_SPECIAL || mo == I_BLOCK_SPECIAL);
  75
  76   statbuf.st_dev = fs_dev;
  77   statbuf.st_ino = va.va_fileid;
  78   statbuf.st_mode = va.va_mode;
  79   statbuf.st_nlink = va.va_nlink;
  80   statbuf.st_uid = va.va_uid;
  81   statbuf.st_gid = va.va_gid;
  82   statbuf.st_rdev = (s ? va.va_rdev : NO_DEV);
  83   statbuf.st_size = va.va_size;
  84   statbuf.st_atime = va.va_atime.tv_sec;
  85   statbuf.st_mtime = va.va_mtime.tv_sec;
  86   statbuf.st_ctime = va.va_ctime.tv_sec;
  87
  88   /* Copy the struct to user space. */
  89   r = sys_safecopyto(fs_m_in.m_source, (cp_grant_id_t) fs_m_in.REQ_GRANT,
  90                      (vir_bytes) 0, (vir_bytes) &statbuf,
  91                      (size_t) sizeof(statbuf));
  92
  93   return(r);
  94 }
  95
  96
  97 /*===========================================================================*
  98  *                             fs_statvfs                                    *
  99  *===========================================================================*/
 100 int fs_statvfs()
 101 {
 102   int r;
 103   struct statvfs st;
 104
 105   if (global_pu->pu_ops.puffs_fs_statvfs(global_pu, &st) != 0) {
 106         lpuffs_debug("statvfs failed\n");
 107         return(EINVAL);
 108   }
 109
 110   /* XXX libpuffs doesn't truncate filenames and returns ENAMETOOLONG,
 111    * though some servers would like to behave differently.
 112    * See subtest 2.18-19 of test23 and test/common.c:does_fs_truncate().
 113    */
 114   st.f_flag |= ST_NOTRUNC;
 115
 116   /* Copy the struct to user space. */
 117   r = sys_safecopyto(fs_m_in.m_source, fs_m_in.REQ_GRANT, 0, (vir_bytes) &st,
 118                     (phys_bytes) sizeof(st));
 119
 120   return(r);
 121 }