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getfsstat(2)
NAME
  getfsstat - Gets list of all mounted file systems

SYNOPSIS
  #include <sys/types.h>
  #include <sys/mount.h>
  getfsstat(
	  struct statfs buf[],
	  long bufsize,
	  int flags );

PARAMETERS
  buf	    An array of statfs structures.

  bufsize   Specifies the size in bytes of the buf parameter.

  flags	    Specifies one of the following flags:

	    MNT_WAIT  Wait for an update from each file system before
		      returning information.

	    MNT_NOWAIT
		      Information is returned without requesting an update
		      from each file system.  Thus, some of the information
		      will be out of date, but the getfsstat() function will
		      not block waiting for information from a file system
		      that is unable to respond.

DESCRIPTION
  The getfsstat() function returns information about all mounted file
  systems.  Upon successful completion, the buffer pointed to by the buf
  parameter is filled with an array of statfs structures, one for each
  mounted file system up to the size specified by the bufsize parameter.

  If the buf parameter is given as 0 (zero), the getfsstat() function returns
  just the number of mounted file systems.

RETURN VALUE
  Upon successful completion, the number of statfs structures is returned.
  Otherwise, -1 is returned and errno is set to indicate the error.

ERRORS
  If the getfsstat() function fails, errno may be set to one of the following
  values:

  [EFAULT]  The buf parameter points to an invalid address.

  [EIO]	    An I/O error occurred while reading from or writing to the file
	    system.


RELATED INFORMATION
  Functions: statfs(2)

  Commands: mount(8)