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ref ourselves when we're using an old one, and once we've created the send
right, remove a reference.
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(open_seek): New function.
(raw_read, raw_write): Return EINVAL if *OFFS isn't a block boundary.
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(fd): Put the fd server on `fd', not `stdin'.
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Remove include dependencies.
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(clean_exit, close_device): Deleted functions.
(thread_cancel): New function.
(fsys_port_class, root_port_class, port_bucket): New vars.
(trivfs_protid_portclasses, trivfs_cntl_portclasses,
trivfs_protid_nportclasses, trivfs_cntl_nportclasses): New vars.
(main): Initialize *portclasses vars, and convert to new trivfs lib.
(trivfs_protid_porttypes, trivfs_cntl_porttypes,
trivfs_protid_nporttypes, trivfs_cntl_nporttypes): Deleted vars.
(trivfs_goaway): Convert args for new trivfs lib.
(ports_cleanroutines): Delete var.
(ports_demuxer, ports_notice_idle, ports_no_live_ports, ports_no_hard_ports):
Delete functions.
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Declare dev_stop_paging ().
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(pager_dropweak): New function.
(pager_port_type): Deleted var.
(pager_port_bucket, pager_port_class): New vars.
(dev_get_memory_object): Moved here from dev.c. Also, call init_dev_pager if
necessary.
(service_paging_requests): New function.
(init_dev_pager): New function.
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Rewrote /dev/fd stuff (still commented out).
Use case built-in instead of expr program.
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(install): Depend on $(prefix)/dev/MAKEDEV.
($(prefix)/dev/MAKEDEV): New target.
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device_lock, and use it to control access to the DEVICE variable.
(open_hook, trivfs_modify_stat, trivfs_S_fys_syncfs): Copy DEVICE before
using it, so it doesn't change underneath us.
(clean_exit): Add a new argument that says whether to aquire a lock before
doing our work.
(ports_notice_idle, ports_no_live_ports): Use it.
(close_device): New function, closes DEVICE cleanly.
(clean_exit, ports_no_hard_ports): Use close_device.
(main): Use trivfs_startup instead of doing it manually.
(trivfs_goaway): Try and do it better, paying attention to flags, etc.; this
still isn't right though, we may want to wait for the ports library to be
fixed first.
(DEBUG): New macro, executes its arg with debug_lock locked.
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the end of the device.
(window_create): Initialize the new MAX_POS field.
Rename the location field `pos'.
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