Date: Mon, 15 Aug 2005 20:04:13 +0000 From: "Wojciech A. Koszek" <dunstan@freebsd.czest.pl> To: freebsd-current@FreeBSD.org Subject: Is mmap() broken for files kept on ext2fs? Message-ID: <20050815200412.GA53364@freebsd.czest.pl>
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Hello, I get easily repeatable problem with mmap(). Is file lies on Ext2 filesystem, I get EINVAL. In order to confirm it, could someone try to copy files from Ext2fs to UFS (/bin/cp compiled with -DVM_AND_BUFFER_CACHE_SYNCHRONIZED, which is default). Additionally: http://freebsd.czest.pl/dunstan/FreeBSD/mmapfile/mmapfile.c [..] mdconfig -a -t malloc -s 10m md1 # mkfs.ext2 /dev/md1 mke2fs 1.38 (30-Jun-2005) [..] # mount_ext2fs /dev/md1 /mnt # dd if=/dev/zero of=/mnt/somefile 3018+0 records in 3017+0 records out 1544704 bytes transferred in 0.073870 secs (20911130 bytes/sec) # ls /mnt/somefile 12 -rw-r--r-- 1 root wheel 1545216 Aug 15 21:45 /mnt/somefile # ./mmapfile /mnt/somefile mmapfile: mmap(): Invalid argument - * Wojciech A. Koszek && dunstan@FreeBSD.czest.pl
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