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/************************************************************************
*
* Purpose: Program to demonstrate the 'statfs' function.
* The program will show the number of free blocks
* on the /tmp filesystem.
*
* Author: M J Leslie
*
* Date: 09-Nov-97 MJL Inital Release
*
* Notes: This function is only available on older unix systems.
* SVR4 systems replaced statfs with statvfs.
*
************************************************************************/
#include <sys/types.h>
#include <sys/vfs.h>
#define UNDEF -1
#define OK 0
#define FAIL 1
void GetFileSystemStat(
const char *Path, /* I Path to a file on the file system to be queried */
long *BSize, /* O Size of blocks on this file system */
long *Blocks, /* O Total no. of blocks on this file system */
long *BFree, /* O No. of blocks still available to an ordinary user */
long *Files, /* O Maximum no. of files possible on this file system */
long *FFree, /* O No. of free file nodes (ie max - currently allocated) */
int *Status); /* O Returned status of this function call:
OK File system parameters found
FAIL Unable to determine file system
parameters */
main()
{
long BSize;
long Blocks;
long BFree;
long Files;
long FFree;
int Status;
GetFileSystemStat("/tmp", /* I Path to a file on the file system to be queried */
&BSize, /* O Size of blocks on this file system */
&Blocks, /* O Total no. of blocks on this file system */
&BFree, /* O No. of blocks still available to an ordinary user */
&Files, /* O Maximum no. of files possible on this file system */
&FFree, /* O No. of free file nodes (ie max - currently allocated) */
&Status); /* O REturned status of this function call:
OK File system parameters found
FAIL */
printf("Free Blocks = %d\n", BFree);
}
/* PUBLIC FUNCTION
********************************************************************************
**
** mos_GetFileSystemStat
**
** DESCRIPTION
**
** Gets information on the file-system on which a particular file resides
**
** IMPLEMENTATION NOTES
**
** On some file systems (eg NFS mounted partitions) it may not be possible
** to determine all the required parameters. In these cases the returned
** value will be set to MOS_UNDEF.
**
********************************************************************************
*/
void GetFileSystemStat(
const char *Path, /* I Path to a file on the file system to be queried */
long *BSize, /* O Size of blocks on this file system */
long *Blocks, /* O Total no. of blocks on this file system */
long *BFree, /* O No. of blocks still available to an ordinary user */
long *Files, /* O Maximum no. of files possible on this file system */
long *FFree, /* O No. of free file nodes (ie max - currently allocated) */
int *Status) /* O returned status of this function call:
OK File system parameters found
FAIL Unable to determine file system
parameters */
{
struct statfs FSBuf; /* structure to contain file system information */
int locStatus; /* local status value */
locStatus = statfs(Path, &FSBuf);
if (locStatus != 0)
{
*BSize = UNDEF;
*Blocks = UNDEF;
*BFree = UNDEF;
*Files = UNDEF;
*FFree = UNDEF;
*Status = FAIL;
}
else
{
*BSize = FSBuf.f_bsize;
*Blocks = FSBuf.f_blocks;
*BFree = FSBuf.f_bavail;
*Files = FSBuf.f_files;
*FFree = FSBuf.f_ffree;
*Status = OK;
}
}
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