diff options
| -rw-r--r-- | doc/new_chapters/confspace.t | 86 |
1 files changed, 77 insertions, 9 deletions
diff --git a/doc/new_chapters/confspace.t b/doc/new_chapters/confspace.t index 31e4bd44f4..4d02c51bd6 100644 --- a/doc/new_chapters/confspace.t +++ b/doc/new_chapters/confspace.t @@ -87,7 +87,20 @@ The cfg_mount() function is not supported by this implementation. @subheading DESCRIPTION: The @code{cfg_mount} function maps a configuration space defined -by the file identified by the the @code{file} argument. +by the file identified by the the @code{file} argument. The +distinguished node of the mapped configuration space shall be +mounted in the active space at the point identified bt the +@code{cfgpath} configuration pathname. + +The @code{notification} argument specifies how changes to the +mapped configuration space shall be communicated to the application. +If the @code{notification} argument is NULL, no notification shall +be performed for the mapped configuration space. If the Event +Logging option is defined, the notification argument defines the +facility to which changes in the mapped configuration space shall +be logged. Otherwise, the @code{notification} argument shall +specify an implementation defined method of notifying the application +of changes to the mapped configuration space. @subheading NOTES: @@ -142,7 +155,8 @@ resolution of the cfgpath argument The @code{cfg_umount} function unmaps the configuration space whose distinguished node is mapped in the active space at the location defined -by @code{cfgpatah} configuration pathname. +by @code{cfgpatah} configuration pathname. All system resources +allocated for this configuration space should be deallocated. @subheading NOTES: @@ -202,7 +216,11 @@ The named node resides on a read-only configuration space. @subheading DESCRIPTION: The @code{cfg_mknod} function creates a new node in the configuration -space which contains the pathname prefix of @cod{cfgpath}. +space which contains the pathname prefix of @cod{cfgpath}. T he node +name shall be defined by the pathname suffix of @code{cfgpath}. The +node name shall be defined by the pathname suffix of @code{cfgpath}. +The node permissions shall be specified by the value of @code{mode}. +The node type shall be specified by the value of @code{type}. @subheading NOTES: @@ -251,7 +269,7 @@ resolution of the cfgpath argument. The @code{cfg_get} function stores the value attribute of the configuration node identified by @code{cfgpath}, into the buffer -described by the value pointer. +described by the @code{value} pointer. @subheading NOTES: @@ -300,7 +318,7 @@ resolution of the cfgpath argument. The @code{cfg_set} function stores the value specified by the @code{value} argument in the configuration node defined by the -@code{cfgpath} argument +@code{cfgpath} argument. @subheading NOTES: @@ -368,10 +386,17 @@ resolution of the cfgpath argument. @subheading DESCRIPTION: -The @code{cfg_link} function shall atomically create a link between -specified nodes, and increment by one the link count of the node -specified by the @code{src} argument. The @code{src} and @code{dest} -arguments point to pathnnames which name existing nodes. +The @code{src} and @code{dest}arguments point to pathnnames which +name existing nodes. The @code{cfg_link} function shall atomically +create a link between specified nodes, and increment by one the link +count of the node specified by the @code{src} argument. + +If the @code{cfg_lin} function fails, no link shall be created, and +the link count of the node shall remain unchanged by this function +call. + +This implementation may require that the calling process has permission +to access the specified nodes. @subheading NOTES: @@ -437,6 +462,9 @@ specified by the @code{cfgpath} path prefix and the parent node specified by @code{cfgpaht}, and shall decrement the link count of the @code{cfgpath} node. +When the link count of the node becomes zero, the space occupied +by the node shall be freed and the node shall no longer be accessible. + @subheading NOTES: @page @@ -493,6 +521,38 @@ the substituted pathname string exceeded {PATH_MAX}. The @code{cfg_open} function shall open a configuration traversal stream rooted in the configuration nodes name by the @code{pathnames} argument. +It shall store a pointer to a CFG object that represents that stream at +the location identified the @code{cfgstream} pointer. The @code{pathnames} +argument is an array of character pointers to NULL-terminated strings. +The last member of this array shall be a NULL pointer. + +The value of @code{options} is the bitwise inclusive OR of values from the +following lists. Applications shall supply exactly one of the first two +values below in @code{options}. + CFG_LOGICAL + CFG_PHYSICAL + +Any combination of the remaining flags can be specified in the value of +@code{options} + CFG_COMFOLLOW + CFG_XDEV + +The @code{cfg_open} argument @code{compar} shall either be NULL or point +to a function that shall be called with two pointers to pointers to CFGENT +structures that shall return less than, equal to , or greater than zero if +the node referenced by the first argument is considered to be respectively +less than, equal to, or greater than the node referenced by the second. +The CFGENT structure fields provided to the comparison routine shall be as +described with the exception that the contents of the @code{cfg_path} and +@code{cfg_pathlen} fields are unspecified. + +This comparison routine is used to determine the order in which nodes in +directories encountered during the traversal are returned, and the order +of traversal when more than one node is specified in the @code{pathnames} +argument to @code{cfg_open}. If a comparison routine is specified, the +order of traversal shall be from the least to the greatest. If the +@code{compar} argument is NULL, the order of traversal shall be as listed +in the @code{pathnames} argument. @subheading NOTES: @@ -542,6 +602,14 @@ substituted pathname string exceeded {PATH_MATH}. @subheading DESCRIPTION: +The @code{cfg_read} function returns a pointer to a CFGENT sturcture +representing a node in the configuration space to which @code{cfgp} +refers. The returned pointer shall be stored at the location +indicated by the @code{node} argument. + +The child nodes of each node in the configuration tree is returned +by @code{cfg_read}. + @subheading NOTES: @page |