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SubjectRe: two more oddities with the fs/Kconfig file
On Sun, 12 Jan 2003, Adrian Bunk wrote:

> On Sun, Jan 12, 2003 at 02:07:13AM -0500, Robert P. J. Day wrote:
> >
> > there are a few options that are categorized as simply
> > "bool", with no following label -- examples being UMSDOS,
> > QUOTACTL, and a couple of others. without a label on that
> > line, the option is not displayed for selection anywhere
> > on the menu. is this deliberate?
> >...
>
> Yes, this is what was called define_bool in the old kconfig.
>
> E.g.
>
> config QUOTACTL
> bool
> depends on XFS_QUOTA || QUOTA
> default y
>
> says that QUOTACTL is automatically selected if XFS_QUOTA or QUOTA is
> selected. This is a config option that is never visible to the user
> configuring the kernel.

hold everything. i *thought* i understood this, now i'm not so sure.
i zipped thru fs/Kconfig, and extracted all of the options i could
find that were either "bool" or "tristate" with no labels. supposedly,
these are never visible to the user. examples:

config QUOTACTL
bool
depends on XFS_QUOTA || QUOTA
default y

config JBD
bool
default EXT3_FS
---help---

config UMSDOS_FS
bool
---help---

config RAMFS
bool
default y
---help---

config SUNRPC
tristate
default m if NFS_FS!=y && NFSD!=y && (NFS_FS=m || NFSD=m)
default y if NFS_FS=y || NFSD=y

config LOCKD
tristate
default m if NFS_FS!=y && NFSD!=y && (NFS_FS=m || NFSD=m)
default y if NFS_FS=y || NFSD=y

config LOCKD_V4
bool
depends on NFSD_V3 || NFS_V3
default y

config EXPORTFS
tristate
default NFSD

config RXRPC
tristate
default m if AFS_FS=m
default y if AFS_FS=y

config ZISOFS_FS
tristate
depends on ZISOFS
default ISO9660_FS

config FS_MBCACHE
tristate
depends on EXT2_FS_XATTR || EXT3_FS_XATTR
default y if EXT2_FS=y || EXT3_FS=y
default m if EXT2_FS=m || EXT3_FS=m

config FS_POSIX_ACL
bool
depends on EXT2_FS_POSIX_ACL || EXT3_FS_POSIX_ACL || JFS_POSIX_ACL
default y


so, according to the above, i would *always* get RAMFS, no matter
what? there's no way to turn this off?

but what about UMSDOS_FS? it's a non-displayed boolean, but
it has no dependencies, and more weirdly, no default value.
so what will it be set to? and why *shouldn't* i be able to
select UMSDOS support or not?

and if they're not displayed, why do some of them have help
screens? and why can't i get to sleep? argh.

rday

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