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/* 8.t
- Ditto for the above three tests at the offset maximum (largest
possible ext2/3 file size.) (8.t)
*/
#include <sys/vfs.h>
#define EXT2_OLD_SUPER_MAGIC 0xEF51
#define EXT2_SUPER_MAGIC 0xEF53
long long get_fs_limit(int fd)
{
struct statfs s;
int res;
long long lim = 0;
res = fstatfs(fd, &s); assert(res == 0);
switch(s.f_type) {
case EXT2_OLD_SUPER_MAGIC:
case EXT2_SUPER_MAGIC:
#if 0
{
long long tmp;
tmp = s.f_bsize / 4;
/* 12 direct + indirect block + dind + tind */
lim = 12 + tmp + tmp * tmp + tmp * tmp * tmp;
lim *= s.f_bsize;
printf("limit(%ld) = %Ld\n", (long)s.f_bsize, lim);
}
#endif
switch(s.f_bsize) {
case 4096: lim = 2199023251456; break;
default:
printf("unknown ext2 blocksize %ld\n", (long)s.f_bsize);
exit(3);
}
break;
default:
printf("unknown filesystem 0x%08lx\n", (long)s.f_type);
exit(3);
}
return lim;
}
#define SET_RLIMIT(x) do ; while (0)
#define LIMIT get_fs_limit(rwfd)
#define FILENAME "testdir.ext2/rwfile"
#include "common-7-8.h"
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