changelog

讲述linux的初始化过程

- Created <devfs_auto_unregister>

- Fixed bugs: compatibility entries were not unregistered for:
    loop driver
    floppy driver
    RAMDISC driver
    IDE tape driver
    SCSI CD-ROM driver
    SCSI HDD driver
===============================================================================
Changes for patch v97

- Fixed bugs: compatibility entries were not unregistered for:
    ALSA sound driver
    partitions in generic disc driver

- Don't return unregistred entries in <devfs_find_handle>

- Panic in <devfs_unregister> if entry unregistered

- Don't panic in <devfs_auto_unregister> for duplicates
===============================================================================
Changes for patch v98

- Don't unregister already unregistered entries in <unregister>

- Register entry in <sd_detect>

- Unregister entry in <sd_detach>

- Changed to <devfs_*register_chrdev> in drivers/char/tty_io.c

- Ported to kernel 2.2.7
===============================================================================
Changes for patch v99

- Ported to kernel 2.2.8

- Fixed bug in drivers/scsi/sd.c when >16 SCSI discs

- Disable warning messages when unable to read partition table for
  removable media
===============================================================================
Changes for patch v100

- Ported to kernel 2.3.1-pre5

- Added "oops-on-panic" boot option

- Improved debugging in <devfs_register> and <devfs_unregister>

- Register entry in <sr_detect>

- Unregister entry in <sr_detach>

- Register entry in <sg_detect>

- Unregister entry in <sg_detach>

- Added support for ALSA drivers
===============================================================================
Changes for patch v101

- Ported to kernel 2.3.2
===============================================================================
Changes for patch v102

- Update serial driver to register PCMCIA entries
  Thanks to Roch-Alexandre Nomine-Beguin <[e-mail]>

- Updated an email address in ChangeLog

- Hide virtual console capture entries from directory listings when
  corresponding console device is not open
===============================================================================
Changes for patch v103

- Ported to kernel 2.3.3
===============================================================================
Changes for patch v104

- Added documentation for some functions

- Added "doc" target to fs/devfs/Makefile

- Added "v4l" directory for video4linux devices

- Replaced call to <devfs_unregister> in <sd_detach> with call to
  <devfs_register_partitions>

- Moved registration for sr and sg drivers from detect() to attach()
  methods

- Register entries in <st_attach> and unregister in <st_detach>

- Work around IDE driver treating CD-ROM as gendisk

- Use <sed> instead of <tr> in rc.devfs

- Updated ToDo list

- Removed "oops-on-panic" boot option: now always Oops
===============================================================================
Changes for patch v105

- Unregister SCSI host from <scsi_host_no_list> in <scsi_unregister>
  Thanks to Zolt醤 B鰏z鰎m閚yi <[e-mail]>

- Don't save /dev/log in rc.devfs

- Ported to kernel 2.3.4-pre1
===============================================================================
Changes for patch v106

- Fixed silly typo in drivers/scsi/st.c

- Improved debugging in <devfs_register>
===============================================================================
Changes for patch v107

- Added "diunlink" and "nokmod" boot options

- Removed superfluous warning message in <devfs_d_iput>
===============================================================================
Changes for patch v108

- Remove entries when unloading sound module
===============================================================================
Changes for patch v109

- Ported to kernel 2.3.6-pre2
===============================================================================
Changes for patch v110

- Took account of change to <d_alloc_root>
===============================================================================
Changes for patch v111

- Created separate event queue for each mounted devfs

- Removed <devfs_invalidate_dcache>

- Created new ioctl()s for devfsd

- Incremented devfsd protocol revision to 3

- Fixed bug when re-creating directories: contents were lost

- Block access to inodes until devfsd updates permissions
===============================================================================
Changes for patch v112

- Modified patch so it applies against 2.3.5 and 2.3.6

- Updated an email address in ChangeLog

- Do not automatically change ownership/protection of /dev/tty<n>

- Updated sample modules.conf

- Switched to sending process uid/gid to devfsd

- Renamed <call_kmod> to <try_modload>

- Added DEVFSD_NOTIFY_LOOKUP event

- Added DEVFSD_NOTIFY_CHANGE event

- Added DEVFSD_NOTIFY_CREATE event

- Incremented devfsd protocol revision to 4

- Moved kernel-specific stuff to include/linux/devfs_fs_kernel.h
===============================================================================
Changes for patch v113

- Ported to kernel 2.3.9

- Restricted permissions on some block devices
===============================================================================
Changes for patch v114

- Added support for /dev/netlink
  Thanks to Dennis Hou <[e-mail]>

- Return EISDIR rather than EINVAL for read(2) on directories

- Ported to kernel 2.3.10
===============================================================================
Changes for patch v115

- Added support for all remaining character devices
  Thanks to Dennis Hou <[e-mail]>

- Cleaned up netlink support
===============================================================================
Changes for patch v116

- Added support for /dev/parport%d
  Thanks to Tim Waugh <[e-mail]>

- Fixed parallel port ATAPI tape driver

- Fixed Atari SLM laser printer driver
===============================================================================
Changes for patch v117

- Added support for COSA card
  Thanks to Dennis Hou <[e-mail]>

- Fixed drivers/char/ppdev.c: missing #include <linux/init.h>

- Fixed drivers/char/ftape/zftape/zftape-init.c
  Thanks to Vladimir Popov <[e-mail]>
===============================================================================
Changes for patch v118

- Ported to kernel 2.3.15-pre3

- Fixed bug in loop driver

- Unregister /dev/lp%d entries in drivers/char/lp.c
  Thanks to Maciej W. Rozycki <[e-mail]>
===============================================================================
Changes for patch v119

- Ported to kernel 2.3.16
===============================================================================
Changes for patch v120

- Fixed bug in drivers/scsi/scsi.c

- Added /dev/ppp
  Thanks to Dennis Hou <[e-mail]>

- Ported to kernel 2.3.17
===============================================================================
Changes for patch v121

- Fixed bug in drivers/block/loop.c

- Ported to kernel 2.3.18
===============================================================================
Changes for patch v122

- Ported to kernel 2.3.19
===============================================================================
Changes for patch v123

- Ported to kernel 2.3.20
===============================================================================
Changes for patch v124

- Ported to kernel 2.3.21
===============================================================================
Changes for patch v125

- Created <devfs_get_info>, <devfs_set_info>,
  <devfs_get_first_child> and <devfs_get_next_sibling>
  Added <<dir>> parameter to <devfs_register>, <devfs_mk_compat>,
  <devfs_mk_dir> and <devfs_find_handle>
  Work sponsored by SGI

- Fixed apparent bug in COSA driver

- Re-instated "scsihosts=" boot option
===============================================================================
Changes for patch v126

- Always create /dev/pts if CONFIG_UNIX98_PTYS=y

- Fixed call to <devfs_mk_dir> in drivers/block/ide-disk.c
  Thanks to Dennis Hou <[e-mail]>

- Allow multiple unregistrations

- Created /dev/scsi hierarchy
  Work sponsored by SGI
===============================================================================
Changes for patch v127

Work sponsored by SGI

- No longer disable devpts if devfs enabled (caveat emptor)

- Added flags array to struct gendisk and removed code from
  drivers/scsi/sd.c

- Created /dev/discs hierarchy
===============================================================================
Changes for patch v128

Work sponsored by SGI

- Created /dev/cdroms hierarchy
===============================================================================
Changes for patch v129

Work sponsored by SGI

- Removed compatibility entries for sound devices

- Removed compatibility entries for printer devices

- Removed compatibility entries for video4linux devices

- Removed compatibility entries for parallel port devices

- Removed compatibility entries for frame buffer devices
===============================================================================
Changes for patch v130

Work sponsored by SGI

- Added major and minor number to devfsd protocol

- Incremented devfsd protocol revision to 5

- Removed compatibility entries for SoundBlaster CD-ROMs

- Removed compatibility entries for netlink devices

- Removed compatibility entries for SCSI generic devices

- Removed compatibility entries for SCSI tape devices
===============================================================================
Changes for patch v131

Work sponsored by SGI

- Support info pointer for all devfs entry types

- Added <<info>> parameter to <devfs_mk_dir> and <devfs_mk_symlink>

- Removed /dev/st hierarchy

- Removed /dev/sg hierarchy

- Removed compatibility entries for loop devices

- Removed compatibility entries for IDE tape devices

- Removed compatibility entries for SCSI CD-ROMs

- Removed /dev/sr hierarchy
===============================================================================
Changes for patch v132

Work sponsored by SGI

- Removed compatibility entries for floppy devices

- Removed compatibility entries for RAMDISCs

- Removed compatibility entries for meta-devices

- Removed compatibility entries for SCSI discs

- Created <devfs_make_root>

- Removed /dev/sd hierarchy

- Support "../" when searching devfs namespace

- Created /dev/ide/host* hierarchy

- Supported IDE hard discs in /dev/ide/host* hierarchy

- Removed compatibility entries for IDE discs

- Removed /dev/ide/hd hierarchy

- Supported IDE CD-ROMs in /dev/ide/host* hierarchy

- Removed compatibility entries for IDE CD-ROMs

- Removed /dev/ide/cd hierarchy
===============================================================================
Changes for patch v133

Work sponsored by SGI

- Created <devfs_get_unregister_slave>

- Fixed bug in fs/partitions/check.c when rescanning
===============================================================================
Changes for patch v134

Work sponsored by SGI

- Removed /dev/sd, /dev/sr, /dev/st and /dev/sg directories

- Removed /dev/ide/hd directory

- Exported <devfs_get_parent>

- Created <devfs_register_tape> and /dev/tapes hierarchy

- Removed /dev/ide/mt hierarchy

- Removed /dev/ide/fd hierarchy

- Ported to kernel 2.3.25