Man Ustat en anglais
USTAT(2)                   Linux Programmer's Manual                  USTAT(2)



 

NAME


       ustat - get file system statistics

 

SYNOPSIS


       #include 
       #include     /* libc[45] */
       #include      /* glibc2 */

       int ustat(dev_t dev, struct ustat *ubuf);

 

DESCRIPTION






       ustat()  returns  information  about  a  mounted file system.  dev is a
       device number identifying a device containing a  mounted  file  system.
       ubuf is a pointer to a ustat structure that contains the following mem-
       bers:

           daddr_t f_tfree;      /* Total free blocks */
           ino_t   f_tinode;     /* Number of free inodes */
           char    f_fname[6];   /* Filsys name */
           char    f_fpack[6];   /* Filsys pack name */

       The last two fields, f_fname and f_fpack, are not implemented and  will
       always be filled with null bytes ('\0').

 

RETURN VALUE


       On success, zero is returned and the ustat structure pointed to by ubuf
       will be filled in.  On error, -1 is returned, and errno is  set  appro-
       priately.

 

ERRORS


       EFAULT ubuf points outside of your accessible address space.

       EINVAL dev does not refer to a device containing a mounted file system.

       ENOSYS The mounted file system referenced by dev does not support  this
              operation, or any version of Linux before 1.3.16.

 

CONFORMING TO


       SVr4.

 

NOTES


       ustat()  is  deprecated  and  has only been provided for compatibility.
       All new programs should use statfs(2) instead.

   HP-UX Notes
       The HP-UX version of the  ustat  structure  has  an  additional  field,
       f_blksize,  that is unknown elsewhere.  HP-UX warns: For some file sys-
       tems, the number of free inodes does not  change.   Such  file  systems
       will  return  -1  in the field f_tinode.  For some file systems, inodes
       are dynamically allocated.  Such file systems will return  the  current
       number of free inodes.

 

SEE ALSO


       stat(2), statfs(2)

 

COLOPHON


       This  page  is  part of release 3.05 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.



Linux                             2003-08-04                          USTAT(2)