[solved] stat64() usage in C

Question

Can someone tell me how to use the large file functions, especially stat64()? I always get
warning: implicit declaration of function 'stat64'
and for the struct stat64 named "filestat"
error: storage size of 'filestat' isn't known
I already crawled every page I found via google and tried with no success:
- compiling with -D_FILE_OFFSET_BITS=64
- #define __USE_LARGEFILE64
- #define _LARGEFILE_SOURCE
- #define _LARGEFILE64_SOURCE
Any suggestions? Thanks in advance!
lynix
Last edited by lynix (2009-10-23 21:11:22)

Answer 1

why not use just the stat instead of stat64 ??
i rly dont know what this c program need to do i'm a beginner c/c++ programmer, but at least i can use google and i found that use stat instead of stat64...
and i tried to and compiles without a problem, so i think it need to be good
1 /*
2 * =====================================================================================
3 *
4 * Filename: test.c
5 *
6 * Description:
7 *
8 * Version: 1.0
9 * Created: 10/23/2009 11:52:20 PM
10 * Revision: none
11 * Compiler: gcc
12 *
13 * Author: Czaka Hunor (), [email protected]
14 * Company:
15 *
16 * =====================================================================================
17 */
18
19 #include <sys/stat.h>
20
21 #define __USE_LARGEFILE64
22 #define _LARGEFILE_SOURCE
23 #define _LARGEFILE64_SOURCE
24
25 int main()
26 {
27 struct stat mystat;
28
29 stat("/etc/fstab", &mystat);
30
31 return 0;
32 }
┌─[ hybrid@arch ~ ]
└─[ $> gcc -Wall -c test.c
test.c: In function 'main':
test.c:27: error: storage size of 'mystat' isn't known
test.c:29: warning: implicit declaration of function '_stat64'
test.c:27: warning: unused variable 'mystat'
┌─[ hybrid@arch ~ ]
└─[ $> gcc -Wall -c test.c
┌─[ hybrid@arch ~ ]
└─[ $> gcc test.o -o test
┌─[ hybrid@arch ~ ]
└─[ $> ./test
┌─[ hybrid@arch ~ ]
└─[ $>
hope i helped