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From: jak@sactoh0.UUCP (Jay A. Konigsberg)
Newsgroups: comp.unix.questions,comp.sys.pyramid
Subject: Re: getting 'df' info from inside a program?
Message-ID: <3394@sactoh0.UUCP>
Date: 28 Jun 90 01:08:55 GMT
References: <797@massey.ac.nz>
Reply-To: jak@sactoh0.UUCP (Jay A. Konigsberg)
Organization: SAC-UNIX, Sacramento, Ca.
Lines: 32

In article <797@massey.ac.nz> GEustace@massey.ac.nz (Glen Eustace) writes:
>We are trying to write some code that will check whether a file will
>fit on a given file system prior to copying it.  It would be great if
>the information given in a 'df' were available with some system call.
>Does anyone know whether there is one and if so how one uses it.
>
This looks like a job for the stat() system call. (Sys V)

#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>

main()
{
struct stat *buf;

buf = (struct stat *)malloc(sizeof(struct stat)); /* error check removed */

if ( stat("filename", buf) == -1 )
    {
    fprintf("stat: error=%d\n", errno);
    exit(2);
    }
else
    {
    printf("%s is %ld bytes.\n", "filename", buf->st_size);
    }
}
-- 
-------------------------------------------------------------
Jay @ SAC-UNIX, Sacramento, Ca.   UUCP=...pacbell!sactoh0!jak
If something is worth doing, its worth doing correctly.