config.3

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

.IX Item "d_finite"
From \fId_finite.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FINITE\*(C'\fR symbol, which
indicates to the C program that the \fIfinite()\fR routine is available.
.ie n .IP """d_finitel""" 4
.el .IP "\f(CWd_finitel\fR" 4
.IX Item "d_finitel"
From \fId_finitel.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FINITEL\*(C'\fR symbol, which
indicates to the C program that the \fIfinitel()\fR routine is available.
.ie n .IP """d_flexfnam""" 4
.el .IP "\f(CWd_flexfnam\fR" 4
.IX Item "d_flexfnam"
From \fId_flexfnam.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`FLEXFILENAMES\*(C'\fR symbol, which
indicates that the system supports filenames longer than 14 characters.
.ie n .IP """d_flock""" 4
.el .IP "\f(CWd_flock\fR" 4
.IX Item "d_flock"
From \fId_flock.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`HAS_FLOCK\*(C'\fR if \fIflock()\fR is
available to do file locking.
.ie n .IP """d_flockproto""" 4
.el .IP "\f(CWd_flockproto\fR" 4
.IX Item "d_flockproto"
From \fId_flockproto.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FLOCK_PROTO\*(C'\fR symbol,
which indicates to the C program that the system provides
a prototype for the \fIflock()\fR function.  Otherwise, it is
up to the program to supply one.
.ie n .IP """d_fork""" 4
.el .IP "\f(CWd_fork\fR" 4
.IX Item "d_fork"
From \fId_fork.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FORK\*(C'\fR symbol, which
indicates to the C program that the \fIfork()\fR routine is available.
.ie n .IP """d_fp_class""" 4
.el .IP "\f(CWd_fp_class\fR" 4
.IX Item "d_fp_class"
From \fId_fp_class.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FP_CLASS\*(C'\fR symbol, which
indicates to the C program that the \fIfp_class()\fR routine is available.
.ie n .IP """d_fpathconf""" 4
.el .IP "\f(CWd_fpathconf\fR" 4
.IX Item "d_fpathconf"
From \fId_pathconf.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FPATHCONF\*(C'\fR symbol, which
indicates to the C program that the \fIpathconf()\fR routine is available
to determine file-system related limits and options associated
with a given open file descriptor.
.ie n .IP """d_fpclass""" 4
.el .IP "\f(CWd_fpclass\fR" 4
.IX Item "d_fpclass"
From \fId_fpclass.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FPCLASS\*(C'\fR symbol, which
indicates to the C program that the \fIfpclass()\fR routine is available.
.ie n .IP """d_fpclassify""" 4
.el .IP "\f(CWd_fpclassify\fR" 4
.IX Item "d_fpclassify"
From \fId_fpclassify.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FPCLASSIFY\*(C'\fR symbol, which
indicates to the C program that the \fIfpclassify()\fR routine is available.
.ie n .IP """d_fpclassl""" 4
.el .IP "\f(CWd_fpclassl\fR" 4
.IX Item "d_fpclassl"
From \fId_fpclassl.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FPCLASSL\*(C'\fR symbol, which
indicates to the C program that the \fIfpclassl()\fR routine is available.
.ie n .IP """d_fpos64_t""" 4
.el .IP "\f(CWd_fpos64_t\fR" 4
.IX Item "d_fpos64_t"
From \fId_fpos64_t.U\fR:
.Sp
This symbol will be defined if the C compiler supports fpos64_t.
.ie n .IP """d_frexpl""" 4
.el .IP "\f(CWd_frexpl\fR" 4
.IX Item "d_frexpl"
From \fId_frexpl.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FREXPL\*(C'\fR symbol, which
indicates to the C program that the \fIfrexpl()\fR routine is available.
.ie n .IP """d_fs_data_s""" 4
.el .IP "\f(CWd_fs_data_s\fR" 4
.IX Item "d_fs_data_s"
From \fId_fs_data_s.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_STRUCT_FS_DATA\*(C'\fR symbol,
which indicates that the struct fs_data is supported.
.ie n .IP """d_fseeko""" 4
.el .IP "\f(CWd_fseeko\fR" 4
.IX Item "d_fseeko"
From \fId_fseeko.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FSEEKO\*(C'\fR symbol, which
indicates to the C program that the \fIfseeko()\fR routine is available.
.ie n .IP """d_fsetpos""" 4
.el .IP "\f(CWd_fsetpos\fR" 4
.IX Item "d_fsetpos"
From \fId_fsetpos.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`HAS_FSETPOS\*(C'\fR if \fIfsetpos()\fR is
available to set the file position indicator.
.ie n .IP """d_fstatfs""" 4
.el .IP "\f(CWd_fstatfs\fR" 4
.IX Item "d_fstatfs"
From \fId_fstatfs.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FSTATFS\*(C'\fR symbol, which
indicates to the C program that the \fIfstatfs()\fR routine is available.
.ie n .IP """d_fstatvfs""" 4
.el .IP "\f(CWd_fstatvfs\fR" 4
.IX Item "d_fstatvfs"
From \fId_statvfs.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FSTATVFS\*(C'\fR symbol, which
indicates to the C program that the \fIfstatvfs()\fR routine is available.
.ie n .IP """d_fsync""" 4
.el .IP "\f(CWd_fsync\fR" 4
.IX Item "d_fsync"
From \fId_fsync.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FSYNC\*(C'\fR symbol, which
indicates to the C program that the \fIfsync()\fR routine is available.
.ie n .IP """d_ftello""" 4
.el .IP "\f(CWd_ftello\fR" 4
.IX Item "d_ftello"
From \fId_ftello.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FTELLO\*(C'\fR symbol, which
indicates to the C program that the \fIftello()\fR routine is available.
.ie n .IP """d_ftime""" 4
.el .IP "\f(CWd_ftime\fR" 4
.IX Item "d_ftime"
From \fId_ftime.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FTIME\*(C'\fR symbol, which indicates
that the \fIftime()\fR routine exists.  The \fIftime()\fR routine is basically
a sub-second accuracy clock.
.ie n .IP """d_futimes""" 4
.el .IP "\f(CWd_futimes\fR" 4
.IX Item "d_futimes"
From \fId_futimes.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FUTIMES\*(C'\fR symbol, which
indicates to the C program that the \fIfutimes()\fR routine is available.
.ie n .IP """d_Gconvert""" 4
.el .IP "\f(CWd_Gconvert\fR" 4
.IX Item "d_Gconvert"
From \fId_gconvert.U\fR:
.Sp
This variable holds what Gconvert is defined as to convert
floating point numbers into strings.  By default, Configure
sets \f(CW\*(C`this\*(C'\fR macro to use the first of gconvert, gcvt, or sprintf
that pass sprintf\-%g\-like behaviour tests.  If perl is using
long doubles, the macro uses the first of the following
functions that pass Configure's tests: qgcvt, sprintf (if
Configure knows how to make sprintf format long doubles\*(--see
sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
The gconvert_preference and gconvert_ld_preference variables
can be used to alter Configure's preferences, for doubles and
long doubles, respectively.  If present, they contain a
space-separated list of one or more of the above function
names in the order they should be tried.
.Sp
d_Gconvert may be set to override Configure with a platform\-
specific function.  If this function expects a double, a
different value may need to be set by the \fIuselongdouble.cbu\fR
call-back unit so that long doubles can be formatted without
loss of precision.
.ie n .IP """d_getcwd""" 4
.el .IP "\f(CWd_getcwd\fR" 4
.IX Item "d_getcwd"
From \fId_getcwd.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETCWD\*(C'\fR symbol, which
indicates to the C program that the \fIgetcwd()\fR routine is available
to get the current working directory.
.ie n .IP """d_getespwnam""" 4
.el .IP "\f(CWd_getespwnam\fR" 4
.IX Item "d_getespwnam"
From \fId_getespwnam.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`HAS_GETESPWNAM\*(C'\fR if \fIgetespwnam()\fR is
available to retrieve enchanced (shadow) password entries by name.
.ie n .IP """d_getfsstat""" 4
.el .IP "\f(CWd_getfsstat\fR" 4
.IX Item "d_getfsstat"
From \fId_getfsstat.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETFSSTAT\*(C'\fR symbol, which
indicates to the C program that the \fIgetfsstat()\fR routine is available.
.ie n .IP """d_getgrent""" 4
.el .IP "\f(CWd_getgrent\fR" 4
.IX Item "d_getgrent"
From \fId_getgrent.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETGRENT\*(C'\fR symbol, which
indicates to the C program that the \fIgetgrent()\fR routine is available
for sequential access of the group database.
.ie n .IP """d_getgrent_r""" 4
.el .IP "\f(CWd_getgrent_r\fR" 4
.IX Item "d_getgrent_r"
From \fId_getgrent_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETGRENT_R\*(C'\fR symbol,
which indicates to the C program that the \fIgetgrent_r()\fR
routine is available.
.ie n .IP """d_getgrgid_r""" 4
.el .IP "\f(CWd_getgrgid_r\fR" 4
.IX Item "d_getgrgid_r"
From \fId_getgrgid_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETGRGID_R\*(C'\fR symbol,
which indicates to the C program that the \fIgetgrgid_r()\fR
routine is available.
.ie n .IP """d_getgrnam_r""" 4
.el .IP "\f(CWd_getgrnam_r\fR" 4
.IX Item "d_getgrnam_r"
From \fId_getgrnam_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETGRNAM_R\*(C'\fR symbol,
which indicates to the C program that the \fIgetgrnam_r()\fR
routine is available.
.ie n .IP """d_getgrps""" 4
.el .IP "\f(CWd_getgrps\fR" 4
.IX Item "d_getgrps"
From \fId_getgrps.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETGROUPS\*(C'\fR symbol, which
indicates to the C program that the \fIgetgroups()\fR routine is available
to get the list of process groups.
.ie n .IP """d_gethbyaddr""" 4
.el .IP "\f(CWd_gethbyaddr\fR" 4
.IX Item "d_gethbyaddr"
From \fId_gethbyad.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETHOSTBYADDR\*(C'\fR symbol, which
indicates to the C program that the \fIgethostbyaddr()\fR routine is available
to look up hosts by their \f(CW\*(C`IP\*(C'\fR addresses.
.ie n .IP """d_gethbyname""" 4
.el .IP "\f(CWd_gethbyname\fR" 4
.IX Item "d_gethbyname"
From \fId_gethbynm.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETHOSTBYNAME\*(C'\fR symbol, which
indicates to the C program that the \fIgethostbyname()\fR routine is available
to look up host names in some data base or other.
.ie n .IP """d_gethent""" 4
.el .IP "\f(CWd_gethent\fR" 4
.IX Item "d_gethent"
From \fId_gethent.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`HAS_GETHOSTENT\*(C'\fR if \fIgethostent()\fR is
available to look up host names in some data base or another.
.ie n .IP """d_gethname""" 4
.el .IP "\f(CWd_gethname\fR" 4
.IX Item "d_gethname"
From \fId_gethname.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETHOSTNAME\*(C'\fR symbol, which
indicates to the C program that the \fIgethostname()\fR routine may be
used to derive the host name.
.ie n .IP """d_gethostbyaddr_r""" 4
.el .IP "\f(CWd_gethostbyaddr_r\fR" 4
.IX Item "d_gethostbyaddr_r"
From \fId_gethostbyaddr_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETHOSTBYADDR_R\*(C'\fR symbol,
which indicates to the C program that the \fIgethostbyaddr_r()\fR
routine is available.
.ie n .IP """d_gethostbyname_r""" 4
.el .IP "\f(CWd_gethostbyname_r\fR" 4
.IX Item "d_gethostbyname_r"
From \fId_gethostbyname_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETHOSTBYNAME_R\*(C'\fR symbol,
which indicates to the C program that the \fIgethostbyname_r()\fR
routine is available.
.ie n .IP """d_gethostent_r""" 4
.el .IP "\f(CWd_gethostent_r\fR" 4
.IX Item "d_gethostent_r"
From \fId_gethostent_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETHOSTENT_R\*(C'\fR symbol,
which indicates to the C program that the \fIgethostent_r()\fR
routine is available.
.ie n .IP """d_gethostprotos""" 4
.el .IP "\f(CWd_gethostprotos\fR" 4
.IX Item "d_gethostprotos"
From \fId_gethostprotos.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETHOST_PROTOS\*(C'\fR symbol,
which indicates to the C program that <netdb.h> supplies
prototypes for the various gethost*() functions.
See also \fInetdbtype.U\fR for probing for various netdb types.
.ie n .IP """d_getitimer""" 4
.el .IP "\f(CWd_getitimer\fR" 4
.IX Item "d_getitimer"
From \fId_getitimer.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETITIMER\*(C'\fR symbol, which
indicates to the C program that the \fIgetitimer()\fR routine is available.
.ie n .IP """d_getlogin""" 4
.el .IP "\f(CWd_getlogin\fR" 4
.IX Item "d_getlogin"
From \fId_getlogin.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETLOGIN\*(C'\fR symbol, which
indicates to the C program that the \fIgetlogin()\fR routine is available
to get the login name.
.ie n .IP """d_getlogin_r""" 4
.el .IP "\f(CWd_getlogin_r\fR" 4
.IX Item "d_getlogin_r"
From \fId_getlogin_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETLOGIN_R\*(C'\fR symbol,
which indicates to the C program that the \fIgetlogin_r()\fR
routine is available.
.ie n .IP """d_getmnt""" 4
.el .IP "\f(CWd_getmnt\fR" 4
.IX Item "d_getmnt"
From \fId_getmnt.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETMNT\*(C'\fR symbol, which
indicates to the C program that the \fIgetmnt()\fR routine is available
to retrieve one or more mount info blocks by filename.
.ie n .IP """d_getmntent""" 4
.el .IP "\f(CWd_getmntent\fR" 4
.IX Item "d_getmntent"
From \fId_getmntent.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETMNTENT\*(C'\fR symbol, which
indicates to the C program that the \fIgetmntent()\fR routine is available
to iterate through mounted files to get their mount info.
.ie n .IP """d_getnbyaddr""" 4
.el .IP "\f(CWd_getnbyaddr\fR" 4
.IX Item "d_getnbyaddr"
From \fId_getnbyad.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_GETNETBYADDR\*(C'\fR symbol, which
indicates to the C program that the \fIgetnetbyaddr()\fR routine is available
to look up networks by their \f(CW\*(C`IP\*(C'\fR addresses.
.ie n .IP """d_getnbyname""" 4
.el .IP "\f(CWd_getnbyname\fR" 4
.IX Item "d_getnbyname"
From \fId_getnbynm.U\fR:
.Sp
This variable conditionally defines the