/************************************************************************ * * 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; } }
file: /Techref/language/ccpp/cref/EXAMPLES/statfs.c, 4KB, , updated: 1997/11/8 23:53, local time: 2024/8/14 19:36,
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