RE: Still seeing large file problem

["George Milliken" <gmilliken@farm9.com>]

remove

-----Original Message-----
From: owner-linux-crypto@nl.linux.org
[mailto:owner-linux-crypto@nl.linux.org]On Behalf Of Dale Amon
Sent: Wednesday, March 07, 2001 9:50 AM
To: linux-crypto
Subject: Still seeing large file problem


Still having problems with 2G files. I can create a multigig file of
zeroes file for my loopback, but I'm running into problems
when I try to open it. I wrote a small test prog that repro's
my problem and I've tried everything I can think of.

I'm hoping there is something obvious and stupid and easily fixed :-)

kernel: 2.4.0 with 2.4.0.3 int patches
	Linux starbase2 2.4.0 #5 SMP Wed Feb 14 19:22:54 GMT 2001 i686 unknown

libc6:  libc6-dev_2.2.2-1_i386.deb
	libc6_2.2.2-1_i386.deb

dist:	debian sid, bleeding edge current

Test program:
-------------- test.c
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <fcntl.h>

main () {
  const char *file = "/bigloop";
  int mode = O_RDONLY;
  int ffd;

  ffd = open (file, mode);
  if (ffd < 0) {
    perror (file);
    exit (1);
  }
  exit (0);
}
------------

test run:
	# gcc -g test.c -o test
	# ./test
	/bigloop: File too large


test file:
	# ls -lg /bigloop
	-rw-rw-r--    1 root     root     2252800000 Feb 26 14:59 /bigloop


strace of test:

root@starbase2:/home/amon# strace ./test
execve("./test", ["./test"], [/* 20 vars */]) = 0
uname({sys="Linux", node="starbase2", ...}) = 0
brk(0)                                  = 0x8049630
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(0x3, 0xbffff02c)                = 0
old_mmap(NULL, 43259, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40017000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0$\320\1"..., 1024) =
1024
fstat64(0x3, 0xbffff074)                = 0
old_mmap(NULL, 1108036, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40022000
mprotect(0x40127000, 38980, PROT_NONE)  = 0
old_mmap(0x40127000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x104000) = 0x40127000
old_mmap(0x4012d000, 14404, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4012d000
close(3)                                = 0
munmap(0x40017000, 43259)               = 0
getpid()                                = 13901
open("/bigloop", O_RDONLY)              = -1 EFBIG (File too large)
write(2, "/bigloop: File too large\n", 25/bigloop: File too large
) = 25
_exit(1)                                = ?

--
------------------------------------------------------
Use Linux: A computer        Dale Amon, CEO/MD
is a terrible thing          Village Networking Ltd
to waste.                    Belfast, Northern Ireland
------------------------------------------------------

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