lib/libpuffs/utility.c

   1 /* Created (MFS based):
   2  *   February 2010 (Evgeniy Ivanov)
   3  */
   4
   5 #include "fs.h"
   6
   7 #include <stdarg.h>
   8
   9 #include "puffs.h"
  10 #include "puffs_priv.h"
  11
  12
  13 /*===========================================================================*
  14  *                              no_sys                                       *
  15  *===========================================================================*/
  16 int no_sys()
  17 {
  18 /* Somebody has used an illegal system call number */
  19   lpuffs_debug("no_sys: invalid call %d\n", req_nr);
  20   return(EINVAL);
  21 }
  22
  23
  24 /*===========================================================================*
  25  *                              mfs_nul                                      *
  26  *===========================================================================*/
  27 void mfs_nul_f(const char *file, int line, char *str, unsigned int len,
  28                       unsigned int maxlen)
  29 {
  30   if (len < maxlen && str[len-1] != '\0') {
  31         lpuffs_debug("%s:%d string (length %d,maxlen %d) not null-terminated\n",
  32                 file, line, len, maxlen);
  33   }
  34 }
  35
  36
  37 /*===========================================================================*
  38  *                              clock_time                                   *
  39  *===========================================================================*/
  40 time_t clock_time()
  41 {
  42 /* This routine returns the time in seconds since 1.1.1970.  MINIX is an
  43  * astrophysically naive system that assumes the earth rotates at a constant
  44  * rate and that such things as leap seconds do not exist.
  45  */
  46
  47   register int k;
  48   clock_t uptime;
  49   time_t boottime;
  50
  51   if ((k=getuptime2(&uptime, &boottime)) != OK)
  52         panic("clock_time: getuptme2 failed: %d", k);
  53
  54   return( (time_t) (boottime + (uptime/sys_hz())));
  55 }
  56
  57
  58 /*===========================================================================*
  59  *                              update_times                                 *
  60  *===========================================================================*/
  61 int update_times(struct puffs_node *pn, int flags, time_t t)
  62 {
  63   int r;
  64   struct vattr va;
  65   time_t new_time;
  66   PUFFS_MAKECRED(pcr, &global_kcred);
  67
  68   if (!flags)
  69         return 0;
  70
  71   if (global_pu->pu_ops.puffs_node_setattr == NULL)
  72         return EINVAL;
  73
  74   new_time = t != 0 ? t : clock_time();
  75
  76   puffs_vattr_null(&va);
  77   /* librefuse modifies atime and mtime together,
  78    * so set old values to avoid setting either one
  79    * to PUFFS_VNOVAL (set by puffs_vattr_null).
  80    */
  81   va.va_atime.tv_sec = pn->pn_va.va_atime.tv_sec;
  82   va.va_mtime.tv_sec = pn->pn_va.va_mtime.tv_sec;
  83
  84   if (flags & ATIME) {
  85         va.va_atime.tv_sec = new_time;
  86         va.va_atime.tv_nsec = 0;
  87   }
  88   if (flags & MTIME) {
  89         va.va_mtime.tv_sec = new_time;
  90         va.va_mtime.tv_nsec = 0;
  91   }
  92   if (flags & CTIME) {
  93         va.va_ctime.tv_sec = new_time;
  94         va.va_ctime.tv_nsec = 0;
  95   }
  96
  97   r = global_pu->pu_ops.puffs_node_setattr(global_pu, pn, &va, pcr);
  98
  99   return(r);
 100 }
 101
 102
 103 /*===========================================================================*
 104  *                              lpuffs_debug                                 *
 105  *===========================================================================*/
 106 void lpuffs_debug(const char *format, ...)
 107 {
 108   char buffer[256];
 109   va_list args;
 110   va_start (args, format);
 111   vsprintf (buffer,format, args);
 112   printf("%s: %s", fs_name, buffer);
 113   va_end (args);
 114 }