4.3BSD - /usr/ingres/source/iutil/markopen.c

   1: # include   <useful.h>
   2: # include   <opsys.h>
   3: # include   <sccs.h>
   4: 
   5: SCCSID(@(#)markopen.c	8.2	1/6/85)
   6: 
   7: /*
   8: **  MARKOPEN -- mark all open files
   9: **
  10: **	Marked files will not be closed later.
  11: **
  12: **	Parameters:
  13: **		ovect -- pointer to bitmap of open files.
  14: **
  15: **	Returns:
  16: **		none
  17: **
  18: **	Side Effects:
  19: **		Sets *ovect to represent the open files.
  20: */
  21: 
  22: long    CmOfiles;   /* default set of files, used all over */
  23: 
  24: markopen(ovect)
  25: register long   *ovect;
  26: {
  27:     register int    i;
  28:     register int    j;
  29:     extern int  errno;
  30:     struct stat sbuf;
  31: 
  32:     if (ovect == NULL)
  33:         ovect = &CmOfiles;
  34: 
  35:     *ovect = 0;
  36:     for (i = 0; i < NOFILE; i++)
  37:     {
  38:         if (fstat(i, &sbuf) >= 0)
  39:             *ovect |= 1 << i;
  40:     }
  41:     errno = 0;
  42: }
  43: /*
  44: **  CLOSEALL -- close all open files (except marked files)
  45: **
  46: **	Parameters:
  47: **		tell -- if set, report files that are open and should
  48: **			not have been.
  49: **		ovect -- vector of files to leave open.
  50: **
  51: **	Returns:
  52: **		none
  53: **
  54: **	Side Effects:
  55: **		none
  56: **
  57: **	Trace Flags:
  58: **		none
  59: */
  60: 
  61: closeall(tell, ovect)
  62: register int    tell;
  63: register long   ovect;
  64: {
  65:     register int    i;
  66: 
  67:     ovect |= CmOfiles;
  68: 
  69:     for (i = 0; i < NOFILE; i++)
  70:     {
  71:         if (!bitset(1 << i, ovect))
  72:             if (close(i) >= 0 && tell)
  73:                 lprintf("File %d open\n", i);
  74:     }
  75: }
  76: 
  77: /*
  78: **	ADDMARKOPEN -- mark individial file descriptors as open
  79: **
  80: **	Marked descriptors will not be closed
  81: **
  82: **	Parameters:
  83: **		long	pvect	pointer to file descriptor vector
  84: **		int	fd	descriptor to mark
  85: **
  86: **	Returns:
  87: **		nothing
  88: **
  89: **	Side effects:
  90: **		none
  91: */
  92: 
  93: addmarkopen(pvect, fd)
  94: register long   *pvect;
  95: int     fd;
  96: {
  97:     *pvect |= 1 << fd;
  98: }

Defined functions

Defined variables