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Diffstat (limited to 'doc/filesystem/mounting.t')
| -rw-r--r-- | doc/filesystem/mounting.t | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/doc/filesystem/mounting.t b/doc/filesystem/mounting.t index 00671a70b7..b835b8cbda 100644 --- a/doc/filesystem/mounting.t +++ b/doc/filesystem/mounting.t @@ -16,20 +16,26 @@ The following is the list of the characteristics of a mount point: @item The mount point must be a directory. It may have files and other directories under it. These files and directories will be hidden when the -file system is mounted. +filesystem is mounted. @item The task must have read/write/execute permissions to the mount point or the mount attempt will be rejected. -@item Only one file system can be mounted to a single mount point. +@item Only one filesystem can be mounted to a single mount point. -@item The Root of the mountable file system will be referenced by the name +@item The Root of the mountable filesystem will be referenced by the name of the mount point after the mount is complete. @end itemize @section Mount Table Chain +The mount table chain is a dynamic list of structures that describe +mounted filesystems a specific points in the filesystem hierarchy. It is +initialized to an empty state during the base filesystem initialization. +The mount operation will add entries to the mount table chain. The +un-mount operation will remove entries from the mount table chain. + Each entry in the mount table chain is of the following type: @example @@ -56,15 +62,13 @@ struct rtems_filesystem_mount_table_entry_tt @section Adding entries to the chain during mount -When a file system is mounted, its presence and location in the file +When a filesystem is mounted, its presence and location in the file system hierarchy is recorded in a dynamic list structure known as a chain. A unique rtems_filesystem_mount_table_entry_tt structure is logged for -each file system that is mounted. This includes the base file system. +each filesystem that is mounted. This includes the base filesystem. @section Removing entries from the chain during unmount -When a file system is dismounted its entry in the mount table chain is +When a filesystem is dismounted its entry in the mount table chain is extracted and the memory for this entry is freed. - - |