- fix round-off errors when determining the number of inodes per group,
which often resulted in the total number of inodes in the file system
being less than what the density asked for.
now you might get more inodes than requested for a given density,
rather than less.
- if the new inodes/group is <= 0, ensure that it's at least 1, preventing
a possible division by zero or other wacky problems
- use long long instead of quad_t
determine the endianness of the `struct fs *o' superblock from o->fs_magic
and set needswap as necessary, rather than trusting the caller to get
it right. invariably, almost every caller of ffs_sb_swap() was calling it
with ns set to the wrong value for ns anyway!
ansi KNF ffs_bswap.c declarations whilst here.
this fixes all sorts of problems when trying to use other-endian file systems,
notably the kernel trying to access memory *way* off, possibly corrupting or
panicing, and userland programs SEGVing and/or corrupting things (e.g,
"fsck_ffs -B" to swap a file system endianness).
whilst the previous rev of ffs_bswap.c (1.10, 2000/12/23) made this problem
worse, i suspect that the problem was always there and previous versions
just happened not to trash things at the wrong time.
FFS_EI should now be a lot more stable.
safe (since there's two separate mallocs using sbrk(2) in that case)
XXX: local malloc provided for mfs memory store allocation; need to
investigate if system (phk) malloc can be used instead.
disklabel is created as per mfs on "swap".
* add -Z option: pre-zero the -F image file before use. this is necessary if
the image is to be used with vnd(4) because by default the files created
with -F have "holes" and vnd doesn't cope with that.
* support 'k', 'm', 'g' suffixes for all options which take numeric arguments.
provide strsuftoi() which performs the parsing mechanism.
* improve man page description of various options
* replace "filesystem" with "file system"
* when displaying usage for mfs, only list mfs options
* minor KNF and WARNS=2 cleanups
- in replacement malloc(), if sbrk(2) returns (void *)-1, convert to NULL
before returning
- in replacement calloc(), check return value of malloc() before zeroing result
Don't try to subtract the address of "acg.cg_firstfield" from
"acg.cg_nextfreeoff", as it's already relative to the start of "&acg".
This always worked because the result of the subtraction was
always negative, thus could never be > "sblock.fs_cgsize" ...
of the new fs has uid.gid equal to the euid.egid of the process
which made it. This change permits users who have write access to
a device (say a floppy) to create a filesystem that, when mounted,
they have write access to.
This change closes PR bin/5990 from jbernard@ox.mines.edu, and is also the
change requested in PR bin/6276 from "Charles M. Hannum" <mycroft@netbsd.org>
need to swap, allocate a buffer for the swapped summaries rather than using
writebuf. The latter is fixed at 64k, which is only enough room to hold
4096 summaries. Creating an fs with more results in a buffer overrun.
First noted by Matt Jacob mjacob@netbsd.org, and fixed by Albeaus
Bayucan, bayucan@nas.nasa.gov. Minor mods by me.
lukem