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# ====================================================================
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#      fileio.cdl
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#      FILEIO layer configuration data
#
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# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      nickg
# Contributors:
# Date:           2000-5-25
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_IO_FILEIO {
    display        "POSIX File IO compatibility layer"
    description    "This package enables the POSIX compatibility
                    layer that implements IEEE 1003.1 file IO."
    include_dir    cyg/fileio
    doc            ref/fileio.html
    
    requires       CYGPKG_ISOINFRA
    requires       CYGPKG_ERROR
    requires       CYGINT_ISO_ERRNO
    requires       CYGINT_ISO_ERRNO_CODES
    requires       CYGINT_ISO_STRING_STRFUNCS

    implements     CYGINT_ISO_FCNTL
    implements     CYGINT_ISO_OPEN
    implements     CYGINT_ISO_DIRENT

    requires       { CYGBLD_ISO_DIRENT_HEADER == "<cyg/fileio/dirent.h>" }
    requires       { CYGBLD_ISO_OPEN_MAX_HEADER == "<cyg/fileio/limits.h>" }
    requires       { CYGBLD_ISO_NAME_MAX_HEADER == "<cyg/fileio/limits.h>" }

    compile        fd.cxx file.cxx io.cxx dir.cxx
    compile        -library=libextras.a misc.cxx

    cdl_interface     CYGINT_IO_FILEIO_FS {
        display       "Filesystems interfacing to FILEIO"
        no_define
        description "
           Each filesystem driver which FILEIO can use implements
           this interface. You can use this to determine if there are
           any filesystems configured in the system." 
    }

    cdl_option CYGFUN_IO_FILEIO_SELECT {
        display          "Enable support for select()"
        active_if        CYGPKG_KERNEL
        implements       CYGINT_ISO_SELECT
        default_value    1
        description      "
            This option enables support for select()."

        compile          select.cxx
    }

    cdl_option CYGPKG_IO_FILEIO_DEVFS_SUPPORT {
        display          "Enable devfs support"
        active_if        CYGPKG_IO
        default_value    { CYGPKG_REDBOOT ? 0 : 1 }
        description      "
            This option enables support for the devfs file system."

        compile           -library=libextras.a devfs.cxx
    }

    cdl_option CYGPKG_IO_FILEIO_SOCKET_SUPPORT {
        display          "Enable socket support"
        active_if        CYGPKG_NET
        active_if        CYGPKG_KERNEL
        default_value    1
        description      "
            This option enables support for the socket interface. It is
            only present if the NET package is included."

        compile          socket.cxx
    }
    
    cdl_option CYGNUM_FILEIO_NFILE {
        display          "Maximum number of open files"
        flavor           data
        default_value    16
        legal_values     1 to 9999999
        description      "This option controls the number of open files
                          that are allowed for all filesystems."
    }

    cdl_option CYGNUM_FILEIO_NFD {
        display          "Maximum number of open file descriptors"
        flavor           data
        default_value    16
        legal_values     CYGNUM_FILEIO_NFILE to 9999999
        description      "This option controls the number of open file descriptors
                          that are allowed for all filesystems."
    }

    cdl_option CYGNUM_FILEIO_FSTAB_MAX {
        display          "Maximum number of installed filesystems"
        flavor           data
        default_value    4
        legal_values     1 to 9999999
        description      "This option controls the maximum number of filesystems
                          that can be handled by the fileio system."

    }

    cdl_option CYGNUM_FILEIO_MTAB_MAX {
        display          "Maximum number of mounted filesystems"
        flavor           data
        default_value    8
        legal_values     CYGNUM_FILEIO_MTAB_EXTRA to 9999999
        description      "This option controls the maximum number of mounted
                          filesystems that can be handled by the fileio system."

    }

    cdl_option CYGNUM_FILEIO_MTAB_EXTRA {
        display          "Number of dynamically mounted filesystems"
        flavor           data
        default_value    8
        legal_values     0 to 9999999
        description      "This option controls the number of mounted
                          filesystems that can be created dynamically."
    }

    cdl_option CYGNUM_FILEIO_NSTAB_MAX {
        display          "Maximum number of installed network stacks"
        flavor           data
        default_value    1
        legal_values     1 to 9999999
        description      "This option controls the maximum number of installed
                          network stacks that can be handled by the fileio system."
    }

    cdl_option CYGPKG_IO_FILEIO_TRACK_CWD {
        display          "Enable current directory tracking"
        flavor           bool
        default_value    1
        description      "This option enables tracking of the name of the current
                          directory in the FILEIO package, to support the getcwd()
                          function. When this option is enabled the FILEIO package
                          will attempt to maintain a string that names the current
                          directory. It does this textually, dealing with \".\" and
                          \"..\" entries by textual manipulation. While this should
                          always provide a path for the current directory, it may not
                          be the best, if symbolic links are present. This tracked CWD
                          is only used if a filesystem does not support the
                          FS_INFO_GETCWD key. "
    }

    cdl_component CYGPKG_IO_FILEIO_INODE {
        display          "Generic inode support"
        flavor           bool
        description      "This option enables generic inode support useful to
                          some filesystems. Not all filesystems require this
                          so it is not enabled by default."
        default_value    0
        requires         CYGINT_ISO_MALLOC
        compile          inocache.cxx

        cdl_option CYGNUM_IO_FILEIO_MAX_INODE_CACHE_DEAD {
            display          "Maximum space for unused cached inodes"
            flavor           data
            default_value    10
            description      "The inode cache allows a maximum limit to be set
                              for the number of unused inodes still in the
                              cache before they are freed. It may be set to 0
                              to indicate no dead inode caching should be
                              provided."
        }
    }

    cdl_option CYGNUM_FILEIO_IOVEC_MAX {
        display          "Maximum size of iovec used by readv/writev"
        flavor           data
        default_value    16
        legal_values     1 to 9999999
        description      "This option controls the maximum size of the iovec
                          structure that can be used by readv()/writev().  This
                          limit is required because the iovec structure must be
                          invariant (to the user), thus a copy needs to be made
                          by the interface routines.  The limit is merely a 
                          control over the amount of stack space used by the
                          readv()/writev() functions."

    }

    cdl_option CYGSEM_FILEIO_INFO_DISK_USAGE {
        display       "cyg_fs_getinfo call for disk usage"
        flavor        bool
        default_value 0
        description   "
            Enabling this option includes code in some filesystems to
            implement a call using cyg_fs_getinfo to return the current
            filesystem block usage."
    }

    cdl_component CYGPKG_FILEIO_FNMATCH {
        display           "POSIX fnmatch configuration"
        flavor            bool
        default_value     ( CYGINT_ISO_STRING_STRFUNCS && CYGINT_ISO_CTYPE )
        requires          { CYGBLD_ISO_FNMATCH_HEADER == \
                            "<cyg/fileio/fnmatch.h>" }
        description       "
            This component provides configuration controls for
            the POSIX fnmatch() function."

        compile          fnmatch.c
    }

    cdl_option CYGPKG_FILEIO_DIRENT_DTYPE {
        display          "Struct dirent contains a d_type field"
        flavor           bool
        default_value    0
        description      "
            If this option is enabled then struct dirent contains a
            d_type field. With this field, file type may be
            distinguished directly without calling stat.  Note: This
            member is not part of the POSIX standard, however is
            commonely implemented in Linux, FreeBSD, but not SunOS.
            Also, not all filesystems support it.  So this feature is
            not portable and should be used with caution." 
    }

    # ----------------------------------------------------------------
    # Tests

        cdl_option CYGPKG_IO_FILEIO_TESTS {
            display "Fileio tests"
            flavor  data
            no_define
            calculated { "tests/fileio1 tests/socket tests/select tests/stdio tests/pselect tests/fnmatch" }
            description   "
                This option specifies the set of tests for the FileIO package."
        }
}

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# End of fileio.cdl