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Tiny markup fixes.

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This commit is contained in:
Ruslan Ermilov 2004-07-06 08:21:12 +00:00
parent 8290e396fb
commit 6f39ea8888
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=131689
11 changed files with 99 additions and 60 deletions
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17
share/man/man9/DECLARE_GEOM_CLASS.9
View File

@ -38,7 +38,9 @@ The
.Fn DECLARE_GEOM_CLASS
macro registers a GEOM class in GEOM.
A GEOM class itself implements one particular kind of transformation.
Typical examples are: MBR disk partition, BSD disklabel and RAID5 classes.
Typical examples are: MBR disk partition,
.Bx
disklabel and RAID5 classes.
.Fn DECLARE_GEOM_CLASS
can be used both for compiled in and loaded as
.Xr kld 4
@ -48,11 +50,11 @@ The arguments to
.Fn DECLARE_GEOM_CLASS
are:
.Bl -inset -offset indent
.It Em class
.It Fa class
is the
.Vt g_class
structure which describes a GEOM class.
.It Em mod_name
.It Fa mod_name
is a kernel module name (not a class name!).
.El
.Pp
@ -60,15 +62,16 @@ Structure
.Vt g_class
contains data describing the class.
They are:
.Bl -inset -offset indent
.Bl -tag -offset indent -width indent
.It Vt "const char *" Va name
Class name.
.It Vt "g_taste_t *" Va taste
Pointer to function used for taste event handling.
If it is
.No non- Ns Dv NULL
.Pf non- Dv NULL
it is called in three situations:
.Bl -dash -offset indent -compact
.Pp
.Bl -dash -compact
.It
On class activation, all existing providers are offered for tasting.
.It
@ -97,12 +100,10 @@ If this field is not set, the class can not be unloaded.
Only field
.Fa name
is required, the rest is optional.
.Pp
.Sh RESTRICTIONS/CONDITIONS
In the
.Vt g_class
initialization one must use C99 initialization (just like in the example below).
.Pp
.Sh EXAMPLES
Example class declaration.
.Bd -literal -offset indent

11
share/man/man9/g_access.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_access 9
.Dt G_ACCESS 9
.Os
.Sh NAME
.Nm g_access
@ -52,7 +52,7 @@ A provider's access count is the sum of the access counts of all
attached consumers.
.Pp
After attaching a consumer to a provider with
.Fn g_attach ,
.Xr g_attach 9 ,
the
.Fn g_access
function has to be called on the consumer before starting I/O requests.
@ -61,16 +61,17 @@ The consumer has to be attached to a provider.
.Pp
The intended change must not result in a negative access count.
.Pp
No\-operation is not permitted
No-operation is not permitted
.Fa ( dcr
=
.Fa dcw
=
.Fa dce
=
.Va 0 ) .
.Li 0 ) .
.Pp
The provider's geom must have an access method defined (e.g.\& gp->access).
The provider's geom must have an access method defined (e.g.,
.Va gp->access ) .
.Pp
The topology lock has to be held.
.Sh RETURN VALUES

2
share/man/man9/g_attach.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_attach 9
.Dt G_ATTACH 9
.Os
.Sh NAME
.Nm g_attach ,

47
share/man/man9/g_bio.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_bio 9
.Dt G_BIO 9
.Os
.Sh NAME
.Nm g_new_bio ,
@ -46,14 +46,14 @@
.Fn g_print_bio "struct bio *bp"
.Sh DESCRIPTION
A
.Fa struct bio
.Vt "struct bio"
is used by GEOM to describe I/O requests, its
most important fields are described below:
.Bl -tag -width ".Va bio_attribute"
.It Va bio_cmd
I/O request command.
There are four I/O requests available in GEOM:
.Bl -tag -width BIO_GETATTR
.Bl -tag -width ".Dv BIO_GETATTR"
.It Dv BIO_READ
A read request.
.It Dv BIO_WRITE
@ -78,7 +78,7 @@ Offset into provider.
Pointer to data buffer.
.It Va bio_flags
Available flags:
.Bl -tag -width BIO_GETATTR
.Bl -tag -width ".Dv BIO_GETATTR"
.It Dv BIO_ERROR
Request failed (error value is stored in
.Va bio_error
@ -91,36 +91,45 @@ Available for private use.
Available for private use.
.El
.It Va bio_error
Error value when BIO_ERROR is set.
Error value when
.Dv BIO_ERROR
is set.
.It Va bio_done
Pointer to function which will be called when the request is finished.
.It Va bio_driver1
Private use by the callee (ie: the provider).
Private use by the callee (i.e., the provider).
.It Va bio_driver2
Private use by the callee (ie: the provider).
Private use by the callee (i.e., the provider).
.It Va bio_caller1
Private use by the caller (ie: the consumer).
Private use by the caller (i.e., the consumer).
.It Va bio_caller2
Private use by the caller (ie: the consumer).
Private use by the caller (i.e., the consumer).
.It Va bio_attribute
Attribute string for BIO_GETATTR request.
Attribute string for
.Dv BIO_GETATTR
request.
.It Va bio_from
Consumer to use for request (attached to provider stored in
.Va bio_to
field) (typically read\-only for a class).
field) (typically read-only for a class).
.It Va bio_to
Destination provider (typically read\-only for a class).
Destination provider (typically read-only for a class).
.It Va bio_length
Request length in bytes.
.It Va bio_completed
Number of bytes completed, but they may not be completed from
the front of the request.
.It Va bio_children
Number of bio clones (typically read\-only for a class).
Number of
.Vt bio
clones (typically read-only for a class).
.It Va bio_inbed
Number of finished bio clones.
Number of finished
.Vt bio
clones.
.It Va bio_parent
Pointer to parent bio.
Pointer to parent
.Vt bio .
.El
.Pp
The
@ -183,13 +192,15 @@ and
.Fn g_clone_bio
functions return a pointer to the allocated
.Vt bio ,
or NULL if an error occurred.
or
.Dv NULL
if an error occurred.
.Sh EXAMPLES
Implementation of
.Dq Dv NULL Ns \-transformation ,
.Dq Dv NULL Ns -transformation ,
meaning that an I/O request is cloned and scheduled down without any
modifications.
Let's assume that field
Let us assume that field
.Va ex_consumer
in structure
.Vt example_softc

9
share/man/man9/g_consumer.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_consumer 9
.Dt G_CONSUMER 9
.Os
.Sh NAME
.Nm g_new_consumer ,
@ -54,7 +54,6 @@ The
.Fn g_destroy_consumer
function destroys the given consumer and cancels all related pending events.
This function is the last stage of killing an unwanted consumer.
.Pp
.Sh RESTRICTIONS/CONDITIONS
.Fn g_new_consumer :
.Bl -item -offset indent
@ -62,9 +61,9 @@ This function is the last stage of killing an unwanted consumer.
The geom
.Fa gp
has to have
.Fa start
.Va start
and
.Fa access
.Va access
methods defined.
.It
The topology lock has to be held.
@ -80,7 +79,9 @@ The access count has to be 0.
The topology lock has to be held.
.El
.Sh RETURN VALUES
The
.Fn g_new_consumer
function
returns a pointer to the newly created consumer.
.Sh EXAMPLES
Create consumer, attach it to given provider, gain read access and clean up.

17
share/man/man9/g_data.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_data 9
.Dt G_DATA 9
.Os
.Sh NAME
.Nm g_read_data ,
@ -34,9 +34,13 @@
.Sh SYNOPSIS
.In geom/geom.h
.Ft "void *"
.Fn g_read_data "struct g_consumer *cp" "off_t offset" "off_t length" "int *error"
.Fo g_read_data
.Fa "struct g_consumer *cp" "off_t offset" "off_t length" "int *error"
.Fc
.Ft int
.Fn g_write_data "struct g_consumer *cp" "off_t offset" "void *ptr" "off_t length"
.Fo g_write_data
.Fa "struct g_consumer *cp" "off_t offset" "void *ptr" "off_t length"
.Fc
.Sh DESCRIPTION
The
.Fn g_read_data
@ -69,11 +73,14 @@ to the provider attached to consumer
starting at offset
.Fa offset .
.Sh RESTRICTIONS/CONDITIONS
The
.Fa length
argument
should be a multiple of the provider's sectorsize
and less than or equal to
.Dv DFLTPHYS
.Dv ( DFLTPHYS is defined in
.Dv ( DFLTPHYS
is defined in
.In sys/param.h ) .
.Pp
The topology lock must not be held.
@ -95,7 +102,7 @@ function returns 0 if successful; otherwise an error code is returned.
Possible errors:
.Bl -tag -width Er
.It Bq Er EIO
Can not read data.
Cannot read data.
.El
.Sh SEE ALSO
.Xr geom 4 ,

14
share/man/man9/g_event.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_event 9
.Dt G_EVENT 9
.Os
.Sh NAME
.Nm g_post_event ,
@ -120,13 +120,15 @@ value.
.It
The
.Fn g_waitfor_event
function can not be called from an event, since doing so would result
function cannot be called from an event, since doing so would result
in a deadlock.
.El
.Sh RETURN VALUES
The
.Fn g_post_event
and
.Fn g_waitfor_event
functions
return 0 if successful; otherwise an error code is returned.
.Sh ERRORS
Possible errors for the
@ -136,7 +138,9 @@ function:
.It Bq Er ENOMEM
The
.Fa flag
argument was set to M_NOWAIT and there was insufficient memory.
argument was set to
.Dv M_NOWAIT
and there was insufficient memory.
.El
.Pp
Possible errors for the
@ -148,7 +152,9 @@ The event was canceled.
.It Bq Er ENOMEM
The
.Fa flag
argument was set to M_NOWAIT and there was insufficient memory.
argument was set to
.Dv M_NOWAIT
and there was insufficient memory.
.El
.Sh EXAMPLES
Example of a function called from the event queue.

18
share/man/man9/g_geom.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_geom 9
.Dt G_GEOM 9
.Os
.Sh NAME
.Nm g_new_geomf ,
@ -43,7 +43,9 @@ The geom (do not confuse
with
.Dq GEOM )
is an instance of a GEOM class.
For example: in a typical i386 FreeBSD system, there will be one geom
For example: in a typical i386
.Fx
system, there will be one geom
of class MBR for each disk.
The geom's name is not really important, it is only used in the XML
dump and for debugging purposes.
@ -53,7 +55,9 @@ The
.Fn g_new_geomf
function creates a new geom, which will be an instance of the class
.Fa mp .
The geom's name is created in a printf-like way from the rest of the arguments.
The geom's name is created in a
.Xr printf 3 Ns
-like way from the rest of the arguments.
.Pp
The
.Fn g_destroy_geom
@ -65,7 +69,7 @@ The
structure
contains fields that should be set by the caller after geom creation, but before
creating any providers or consumers related to this geom (not all are required):
.Bl -inset -offset indent
.Bl -tag -offset indent -width indent
.It Vt "g_start_t *" Va start
Pointer to a function used for I/O processing.
.It Vt "g_spoiled_t *" Va spoiled
@ -105,14 +109,16 @@ The topology lock has to be held.
.Fn g_destroy_geom :
.Bl -item -offset indent
.It
The geom can not posses any providers.
The geom cannot posses any providers.
.It
The geom can not posses any consumers.
The geom cannot posses any consumers.
.It
The topology lock has to be held.
.El
.Sh RETURN VALUES
The
.Fn g_new_geomf
function
returns a pointer to the newly created geom.
.Sh EXAMPLES
Create an example geom.

14
share/man/man9/g_provider.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_provider 9
.Dt G_PROVIDER 9
.Os
.Sh NAME
.Nm g_new_providerf ,
@ -43,16 +43,20 @@
.Sh DESCRIPTION
A GEOM provider is the front gate at which a geom offers service.
A provider is
.Dq a disk\-like thing which appears in Pa /dev
\- a logical disk in other words.
.Dq a disk-like thing which appears in Pa /dev
\[en] a logical disk in other words.
All providers have three main properties: name, sectorsize and size.
.Pp
The
.Fn g_new_providerf
function creates a new provider on given geom
.Fa gp .
The name of the provider, which will appear as device in devfs, is created
in a printf-like way from the rest of
The name of the provider, which will appear as device in
.Xr devfs 5 ,
is created
in a
.Xr printf 3 Ns
-like way from the rest of
the arguments.
After creation, the caller has to set the provider's
.Va mediasize

8
share/man/man9/g_provider_by_name.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_provider_by_name 9
.Dt G_PROVIDER_BY_NAME 9
.Os
.Sh NAME
.Nm g_provider_by_name
@ -40,18 +40,20 @@ The
function searches for a provider called
.Fa name
and returns the structure
.Fa g_provider
.Vt g_provider
bound to it.
Argument
.Fa name
should be a name, not a full path (ie.
should be a name, not a full path (i.e.,
.Dq Pa da0 ,
instead of
.Dq Pa /dev/da0 ) .
.Sh RESTRICTIONS/CONDITIONS
The topology lock has to be held.
.Sh RETURN VALUES
The
.Fn g_provider_by_name
function
returns a pointer to the provider called
.Fa name
or

2
share/man/man9/g_wither_geom.9
View File

@ -25,7 +25,7 @@
.\" $FreeBSD$
.\"
.Dd January 16, 2004
.Dt g_wither_geom 9
.Dt G_WITHER_GEOM 9
.Os
.Sh NAME
.Nm g_wither_geom