Creates a bitmap from FAT file system free/used clusters. The bitmap is in text format so contains zero (character 48) and one (character 49) bytes. A zero means that the cluster is free, a one means that the cluster is used.
For example creating a usage map of FAT file system (from filesys.iso image file):
fat2bitmap --if filesys.iso --of usagemap.txt
usagemap.txt will contain text:
1110111100001100110 .. and so on.
fat2bitmap [options]
Options:
- --if FILE Specifies the input file.
- --of FILE Specifies the output file (default: stdout).
- --help Prints usage information.
- --version Prints version information.
Program does support output to stdout (so redirection is possible), but cannot get its input data from stdin.
You can get progress information by sending a SIGUSR1 signal to the process:
kill -SIGUSR1 pid (where pid is the process identifier)
Make cluster map of /dev/sda1 partition (FAT):
fat2bitmap --if /dev/sda1 --of mapsda1.txt
Make cluster map of /dev/sdb3 partition (FAT) and create a PBM image of it:
fat2bitmap --if /dev/sdb3 | bitmapdd --bs 1 --null 48 | bitmap2pbm --of mapsdb3.pbm
For these tools check the "See also" section.
Program should build on any UNIX like operation system with a standard C compiler and make utility.
To compile:
make
To compile without signal handling:
make CFLAGS='-DNOSIGNAL'
To run:
./bin/fat2bitmap
(however you must give at least --if parameter to it)
To clean:
make clean
Written by Andras Majdan.
License: GNU General Public License Version 3
Report bugs to [email protected]
Heavily based on code of dosfstools. Without this great tool it would have taken ages to write this program.
bitmap2pbm - Creates a P4 type PBM image from a binary file.
bitmapdd - Creates a bitmap from a file (or device).