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mirror of https://git.FreeBSD.org/src.git synced 2024-12-14 10:09:48 +00:00

Markup, grammar, and spelling fixes.

This commit is contained in:
Ruslan Ermilov 2004-06-30 20:09:10 +00:00
parent 55388cdd92
commit 33992dc0ed
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=131365
20 changed files with 121 additions and 82 deletions

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@ -138,8 +138,14 @@ The following flags
alter this:
.Bl -tag -width VIS_WHITEX
.It Dv VIS_GLOB
Also encode magic characters ('*', '?', '[' and '#') recognized by
.Xr glob 3
Also encode magic characters
.Ql ( * ,
.Ql \&? ,
.Ql \&[
and
.Ql # )
recognized by
.Xr glob 3 .
.It Dv VIS_SP
Also encode space.
.It Dv VIS_TAB

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@ -126,10 +126,10 @@ See the specific manual pages for more information.
.Xr isgraph 3 ,
.Xr isideogram 3 ,
.Xr islower 3 ,
.Xr isrune 3 ,
.Xr isphonogram 3 ,
.Xr isprint 3 ,
.Xr ispunct 3 ,
.Xr isrune 3 ,
.Xr isspace 3 ,
.Xr isspecial 3 ,
.Xr isupper 3 ,

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@ -51,7 +51,7 @@
.Sh DESCRIPTION
The basic elements of some written natural languages, such as Chinese,
cannot be represented uniquely with single C
.Va char Ns s .
.Vt char Ns s .
The C standard supports two different ways of dealing with
extended natural language encodings:
wide characters and
@ -59,10 +59,10 @@ multibyte characters.
Wide characters are an internal representation
which allows each basic element to map
to a single object of type
.Va wchar_t .
.Vt wchar_t .
Multibyte characters are used for input and output
and code each basic element as a sequence of C
.Va char Ns s .
.Vt char Ns s .
Individual basic elements may map into one or more
(up to
.Dv MB_LEN_MAX )
@ -75,7 +75,7 @@ The locale category
.Dv LC_CTYPE
specifically controls this interpretation.
The
.Va wchar_t
.Vt wchar_t
type is wide enough to hold the largest value
in the wide character representations for all locales.
.Pp
@ -89,17 +89,17 @@ but are lumped with a neighboring character.
There is always a distinguished
.Sq initial
shift state.
Some functions (e.g.
.Fn mblen ,
.Fn mbtowc
Some functions (e.g.,
.Xr mblen 3 ,
.Xr mbtowc 3
and
.Fn wctomb )
.Xr wctomb 3 )
maintain static shift state internally, whereas
others store in an
others store it in an
.Vt mbstate_t
object passed by the caller.
Shift states are undefined after a call to
.Fn setlocale
.Xr setlocale 3
with the
.Dv LC_CTYPE
or
@ -118,22 +118,22 @@ Null bytes are not permitted within multibyte characters.
The C library provides the following functions for dealing with
multibyte characters:
.Bl -column "Description"
.It Sy "Function Description"
.It "mblen get number of bytes in a character"
.It "mbrlen get number of bytes in a character (restartable)"
.It "mbrtowc convert a character to a wide-character code (restartable)"
.It "mbsrtowcs convert a character string to a wide-character string (restartable)"
.It "mbstowcs convert a character string to a wide-character string"
.It "mbtowc convert a character to a wide-character code"
.It "wcrtomb convert a wide-character code to a character (restartable)"
.It "wcstombs convert a wide-character string to a character string"
.It "wcsrtombs convert a wide-character string to a character string (restartable)"
.It "wctomb convert a wide-character code to a character"
.It Sy "Function Description"
.It Xr mblen 3 Ta "get number of bytes in a character"
.It Xr mbrlen 3 Ta "get number of bytes in a character (restartable)"
.It Xr mbrtowc 3 Ta "convert a character to a wide-character code (restartable)"
.It Xr mbsrtowcs 3 Ta "convert a character string to a wide-character string (restartable)"
.It Xr mbstowcs 3 Ta "convert a character string to a wide-character string"
.It Xr mbtowc 3 Ta "convert a character to a wide-character code"
.It Xr wcrtomb 3 Ta "convert a wide-character code to a character (restartable)"
.It Xr wcstombs 3 Ta "convert a wide-character string to a character string"
.It Xr wcsrtombs 3 Ta "convert a wide-character string to a character string (restartable)"
.It Xr wctomb 3 Ta "convert a wide-character code to a character"
.El
.Sh SEE ALSO
.Xr mklocale 1 ,
.Xr stdio 3 ,
.Xr setlocale 3 ,
.Xr stdio 3 ,
.Xr big5 5 ,
.Xr euc 5 ,
.Xr gb18030 5 ,

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@ -458,7 +458,7 @@ are documented in
Although the current implementation is otherwise thread-safe, using
it in conjunction with
.Fn gethostby*
(see
(see
.Xr gethostbyname 3 )
or
.Xr yp 8

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@ -243,7 +243,11 @@ call fails if:
was not large enough to store the presentation form of the address.
.It Bq Er EAFNOSUPPORT
.Fa *src
was not an AF_INET or AF_INET6 family address.
was not an
.Dv AF_INET
or
.Dv AF_INET6
family address.
.El
.Sh SEE ALSO
.Xr addr2ascii 3 ,

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@ -399,7 +399,7 @@ to a buffer pointed to by
.Sh RETURN VALUES
The
.Fn res_init
function will return 0 on success, or -1 in a threaded program if
function will return 0 on success, or \-1 in a threaded program if
per-thread storage could not be allocated.
.Sh IMPLEMENTATION NOTES
This implementation of the resolver is thread-safe, but it will not

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@ -37,6 +37,8 @@
.Nm mac_get_file ,
.Nm mac_get_link ,
.Nm mac_get_fd ,
.Nm mac_get_peer ,
.Nm mac_get_pid ,
.Nm mac_get_proc
.Nd get the label of a file, socket, socket peer or process
.Sh LIBRARY
@ -61,7 +63,7 @@ The
system call returns the label associated with a file specified by
pathname.
The
.Fn mac_get_link
.Fn mac_get_link
function is the same as
.Fn mac_get_file ,
except that it does not follow symlinks.
@ -86,7 +88,7 @@ The
and
.Fn mac_get_proc
system calls return the process label associated with an arbitrary
process id, or the current process.
process ID, or the current process.
.Pp
Label storage for use with these calls must first be allocated and
prepared using the

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@ -84,7 +84,7 @@ implementation, they must be freed using
as
.Xr mac_free 3
is used only to free memory used for type
.Dv mac_t .
.Vt mac_t .
.Sh ERRORS
.Bl -tag -width Er
.It Bq Er ENOMEM

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@ -549,10 +549,9 @@ to represent the hex digits, and the letter
to separate the mantissa and exponent.
.Pp
Note that there may be multiple valid ways to represent floating-point
numbers in this hexadecimal format. For example,
.Li 0x3.24p+0
and
.Li 0x6.48p-1
numbers in this hexadecimal format.
For example,
.Li 0x3.24p+0 , 0x6.48p-1
and
.Li 0xc.9p-2
are all equivalent.

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@ -34,7 +34,7 @@
.\" @(#)ffs.3 8.2 (Berkeley) 4/19/94
.\" $FreeBSD$
.\"
.Dd April 19, 1994
.Dd January 13, 2004
.Dt FFS 3
.Os
.Sh NAME

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@ -120,7 +120,7 @@ is zero,
will return immediately even if there is a
.Fa timeout
specified unlike
.Xr select 2 .
.Xr select 2 .
If
.Fa timeout
is a non-NULL pointer, it specifies a maximum interval to wait
@ -345,7 +345,7 @@ The file referenced by the descriptor was renamed.
.It NOTE_REVOKE
Access to the file was revoked via
.Xr revoke 2
or the underlying filesystem was unmounted.
or the underlying file system was unmounted.
.El
.Pp
On return,
@ -530,7 +530,7 @@ It is currently not possible to watch a
that resides on anything but
a UFS file system.
.Pp
The
The
.Dv EVFILT_NETDEV
filter is currently only implemented for devices that use the
.Xr miibus 4

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@ -82,24 +82,24 @@ The
.Fn nmount
system call behaves similarly to
.Fn mount ,
except that the mount options (filesystem type name, device to mount,
except that the mount options (file system type name, device to mount,
mount-point name, etc.) are passed as an array of name-value pairs
in the array
.Fa iov ,
containing
.Fa niov
elements.
The following options are required by all filesystems:
The following options are required by all file systems:
.Bl -item -offset indent -compact
.It
.Li fstype Ta filesystem type name (e.g. Dq Li procfs )
.Li fstype Ta file system type name (e.g., Dq Li procfs )
.It
.Li fspath Ta mount point pathname (e.g. Dq Li /proc )
.Li fspath Ta mount point pathname (e.g., Dq Li /proc )
.El
.Pp
Depending on the filesystem type, other options may be
Depending on the file system type, other options may be
recognized or required;
for example, most disk-based filesystems require a
for example, most disk-based file systems require a
.Dq Li from
option containing the pathname of a special device
in addition to the options listed above.

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@ -65,11 +65,15 @@ succeeding locations will be examined.
The
.Fa flags
argument may be specified as follows:
.Bd -literal
MS_ASYNC Return immediately
MS_SYNC Perform synchronous writes
MS_INVALIDATE Invalidate all cached data
.Ed
.Pp
.Bl -tag -width ".Dv MS_INVALIDATE" -compact
.It Dv MS_ASYNC
Return immediately
.It Dv MS_SYNC
Perform synchronous writes
.It Dv MS_INVALIDATE
Invalidate all cached data
.El
.Sh RETURN VALUES
.Rv -std msync
.Sh ERRORS
@ -80,7 +84,8 @@ will fail if:
.Bl -tag -width Er
.It Bq Er EBUSY
Some or all of the pages in the specified region are locked and
MS_INVALIDATE is specified.
.Dv MS_INVALIDATE
is specified.
.It Bq Er EINVAL
The
.Fa addr

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@ -246,7 +246,7 @@ or
.Dv O_EXLOCK
is specified but the underlying file system does not support locking.
.It Bq Er EOPNOTSUPP
The named file is a special file mounted through a filesystem that
The named file is a special file mounted through a file system that
does not support access to it (e.g. NFS).
.It Bq Er EWOULDBLOCK
.Dv O_NONBLOCK

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@ -176,7 +176,7 @@ The specified time limit is negative.
.Sh SEE ALSO
.Xr accept 2 ,
.Xr connect 2 ,
.Xr kqueue 2 ,
.Xr kqueue 2 ,
.Xr read 2 ,
.Xr recv 2 ,
.Xr select 2 ,

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@ -34,7 +34,8 @@ issue a series of
system calls to control the execution of the process, as well as access
process memory and register state.
For the duration of the tracing session, the traced process will be
"re-parented", with its parent process id (and resulting behavior)
.Dq re-parented ,
with its parent process ID (and resulting behavior)
changed to the tracing process.
It is permissible for a tracing process to attach to more than one
other process at a time.
@ -61,7 +62,7 @@ as a result of attaching, system calls, or stepping by the tracing
process.
The tracing process may choose to intercept the signal, using it to
observe process behavior (such as
.Dv SIGTRAP ),
.Dv SIGTRAP ) ,
or forward the signal to the process if appropriate.
The
.Fn ptrace

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@ -165,10 +165,10 @@ The file was marked for non-blocking I/O,
and no data were ready to be read.
.It Bq Er EISDIR
The file descriptor is associated with a directory residing
on a filesystem that does not allow regular read operations on
on a file system that does not allow regular read operations on
directories (e.g. NFS).
.It Bq Er EOPNOTSUPP
The file descriptor is associated with a filesystem and file type that
The file descriptor is associated with a file system and file type that
do not allow regular read operations on it.
.It Bq Er EOVERFLOW
The file descriptor is associated with a regular file,
@ -178,7 +178,7 @@ is greater than 0,
is before the end-of-file, and
.Fa offset
is greater than or equal to the offset maximum established
for this filesystem.
for this file system.
.El
.Pp
In addition,
@ -190,7 +190,7 @@ The
.Fa iovcnt
argument
was less than or equal to 0, or greater than
.Li IOV_MAX .
.Dv IOV_MAX .
.It Bq Er EINVAL
One of the
.Fa iov_len

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@ -190,12 +190,16 @@ The remote host was down.
.It Bq Er ENETDOWN
The remote network was down.
.It Bq Er EPERM
The process using a SOCK_RAW socket was jailed and the source
address specified in the IP header did not match the IP
The process using a
.Dv SOCK_RAW
socket was jailed and the source
address specified in the IP header did not match the IP
address bound to the prison.
.It Bq Er EPIPE
The socket is unable to send anymore data (SBS_CANTSENDMORE has
been set on the socket). This typically means that the socket
The socket is unable to send anymore data
.Dv ( SBS_CANTSENDMORE
has been set on the socket).
This typically means that the socket
is not connected.
.El
.Sh BUGS

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@ -89,9 +89,13 @@ variable pointed to by
The
.Fa flags
argument has one possible value:
.Fa SF_NODISKIO .
This flag causes any sendfile call which would block on disk I/O to instead
return EBUSY. Busy servers may benefit by transferring requests that would
.Dv SF_NODISKIO .
This flag causes any
.Fn sendfile
call which would block on disk I/O to instead
return
.Er EBUSY .
Busy servers may benefit by transferring requests that would
block to a separate I/O worker thread.
.Pp
When using a socket marked for non-blocking I/O,
@ -112,27 +116,30 @@ implementation of
is "zero-copy", meaning that it has been optimized so that copying of the file data is avoided.
.Sh TUNING
Internally, this system call uses a special
.Xr sendfile 2
.Fn sendfile
buffer
.Pq Vt "struct sf_buf"
to handle sending file data to the client.
If the sending socket is
blocking, and there are not enough sendfile buffers available,
.Xr sendfile 2
blocking, and there are not enough
.Fn sendfile
buffers available,
.Fn sendfile
will block and report a state of
.Dq Li sfbufa .
If the sending socket is non-blocking and there are not enough
sendfile buffers available, the call will block and wait for the
.Fn sendfile
buffers available, the call will block and wait for the
necessary buffers to become available before finishing the call.
.Pp
The number of
.Vt sf_buf Ns 's
allocated should be proportional to the number of nmbclusters used to
send data to a client via
.Xr sendfile 2 .
.Fn sendfile .
Tune accordingly to avoid blocking!
Busy installations that make extensive use of
.Xr sendfile 2
.Fn sendfile
may want to increase these values to be inline with their
.Va kern.ipc.nmbclusters
(see
@ -140,20 +147,25 @@ may want to increase these values to be inline with their
for details).
.Pp
The number of
.Xr sendfile 2
.Fn sendfile
buffers available is determined at boot time by either the
.Va kern.ipc.nsfbufs
.Xr loader.conf 5
variable or the
.Dv NSFBUFS
kernel configuration tunable.
The number of sendfile buffers scales with
The number of
.Fn sendfile
buffers scales with
.Va kern.maxusers .
The
.Va kern.ipc.nsfbufsused
and
.Va kern.ipc.nsfbufspeak
read-only sysctl variables show current and peak
.Xr sendfile 2
read-only
.Xr sysctl 8
variables show current and peak
.Fn sendfile
buffers usage respectively.
These values may also be viewed through
.Nm netstat Fl m .
@ -173,8 +185,11 @@ argument
is not a valid socket descriptor.
.It Bq Er EBUSY
Completing the entire transfer would have required disk I/O, so
it was aborted. Partial data may have been sent.
(This error can only occur when SF_NODISKIO is specified.)
it was aborted.
Partial data may have been sent.
(This error can only occur when
.Dv SF_NODISKIO
is specified.)
.It Bq Er ENOTSOCK
The
.Fa s
@ -208,7 +223,10 @@ An error occurred while reading from
.It Bq Er EFAULT
An invalid address was specified for an argument.
.It Bq Er EINTR
A signal interrupted sendfile before it could be completed. If specified, the number
A signal interrupted
.Fn sendfile
before it could be completed.
If specified, the number
of bytes successfully sent will be returned in
.Fa *sbytes .
.It Bq Er EAGAIN

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@ -116,11 +116,11 @@ All I/O to the file system is done synchronously.
No file system I/O is done synchronously.
.It Dv MNT_SOFTDEP
Soft updates being done (see
.Xr ffs 7).
.Xr ffs 7 ) .
.It Dv MNT_SUIDDIR
Special handling of SUID bit on directories.
.It Dv MNT_UNION
Union with underlying filesystem.
Union with underlying file system.
.It Dv MNT_NOSYMFOLLOW
Symbolic links are not followed.
.It Dv MNT_NOCLUSTERR
@ -132,7 +132,7 @@ Write clustering is disabled.
.It Dv MNT_MULTILABEL
Mandatory Access Control (MAC) support for individual objects
(see
.Xr mac 4).
.Xr mac 4 ) .
.It Dv MNT_ACLS
Access Control List (ACL) support enabled.
.It Dv MNT_LOCAL