Hi Two users of a hack I wrote told me that http://vleu.net/shake/fb_r4.c (also attached with the mail) returned "FIBMAP=-22, FIGETBSZ=4096" on some of their files on reiser4 filesystems.
Does this value of "-22" have a special meaning (would be strange), or is it a bug in Reiser4 ? I can ask them for more details, if you want. Thanks Brice
/* * Non released test software, distributed under GPL-2 licence by * Brice Arnould (c) 2006 * You shouldn't use it. */ #include <stdio.h> #include <assert.h> // assert() #include <errno.h> // errno #include <error.h> // error() #include <sys/ioctl.h> // ioctl() #include <linux/fs.h> // FIBMAP, FIGETBSZ #include <sys/types.h> // open() #include <sys/stat.h> // open() #include <fcntl.h> // open() int main (int argc, char **argv) { int fd, blocksize, block = 0; if (1 != argc) error (1, 0, "usage : %s FILE", argv[0]); fd = open (argv[1], O_RDONLY); assert (0 < fd); if (-1 == ioctl (fd, FIGETBSZ, &blocksize) || -1 == ioctl (fd, FIBMAP, &block)) error (1, 0, "ioctl() failed, are you root ?\n"); printf ("FIBMAP=%i, FIGETBSZ=%i\n", block, blocksize); close (fd); }