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Remove the amateur radio (AX.25, NET/ROM, ROSE) protocol implementation and all associated hamradio device drivers from the kernel tree. This set of protocols has long been a huge bug/syzbot magnet, and since nobody stepped up to help us deal with the influx of the AI-generated bug reports we need to move it out of tree to protect our sanity. The code is moved to an out-of-tree repo: https://github.com/linux-netdev/mod-orphan if it's cleaned up and reworked there we can accept it back. Minimal stub headers are kept for include/net/ax25.h (AX25_P_IP, AX25_ADDR_LEN, ax25_address) and include/net/rose.h (ROSE_ADDR_LEN) so that the conditional integration code in arp.c and tun.c continues to compile and work when the out-of-tree modules are loaded. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Stephen Hemminger <stephen@networkplumber.org> Acked-by: Carlos Bilbao <carlos.bilbao@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Acked-by: Toke Høiland-Jørgensen <toke@toke.dk> Link: https://patch.msgid.link/20260421021824.1293976-1-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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80 lines
3.3 KiB
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.. include:: ../disclaimer-zh_CN.rst
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:Original: Documentation/staging/magic-number.rst
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:翻译:
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贾威威 Jia Wei Wei <harryxiyou@gmail.com>
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:校译:
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司延腾 Yanteng Si <siyanteng@loongson.cn>
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Linux 魔术数
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============
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这个文件是有关当前使用的魔术值注册表。当你给一个结构体添加了一个魔术值，你也
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应该把这个魔术值添加到这个文件，因为我们最好把用于各种结构体的魔术值统一起来。
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使用魔术值来保护内核数据结构是一个 **非常好的主意** 。这就允许你在运行时检
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查一个结构体(a)是否已经被攻击，或者(b)你已经给一个例程传递了一个错误的结构
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体。最后一种情况特别地有用---特别是当你通过一个空指针指向结构体的时候。例如，
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tty源码经常通过特定驱动使用这种方法用来反复地排列特定方面的结构体。
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使用魔术值的方法是在结构体的开头声明它们，如下::
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struct tty_ldisc {
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int magic;
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...
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};
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当你以后给内核添加增强功能的时候，请遵守这条规则！这样就会节省数不清的调试
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时间，特别是一些古怪的情况，例如，数组超出范围并且覆盖写了超出部分。利用这
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个规则，这些情况可以被快速地，安全地检测到这些案例。
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变更日志::
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Theodore Ts'o
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31 Mar 94
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给当前的Linux 2.1.55添加魔术表。
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Michael Chastain
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<mailto:mec@shout.net>
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22 Sep 1997
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现在应该最新的Linux 2.1.112.因为在特性冻结期间，不能在2.2.x前改变任
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何东西。这些条目被数域所排序。
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Krzysztof G.Baranowski
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<mailto: kgb@knm.org.pl>
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29 Jul 1998
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更新魔术表到Linux 2.5.45。刚好越过特性冻结，但是有可能还会有一些新的魔
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术值在2.6.x之前融入到内核中。
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Petr Baudis
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<pasky@ucw.cz>
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03 Nov 2002
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更新魔术表到Linux 2.5.74。
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Fabian Frederick
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<ffrederick@users.sourceforge.net>
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09 Jul 2003
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===================== ================ ======================== ==========================================
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魔术数名 数字 结构 文件
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===================== ================ ======================== ==========================================
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PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/pg.h``
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APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
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FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
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SLIP_MAGIC 0x5302 slip ``drivers/net/slip.h``
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KV_MAGIC 0x5f4b565f kernel_vars_s ``arch/mips/include/asm/sn/klkernvars.h``
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CODA_MAGIC 0xC0DAC0DA coda_file_info ``fs/coda/coda_fs_i.h``
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CCB_MAGIC 0xf2691ad2 ccb ``drivers/scsi/ncr53c8xx.c``
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QUEUE_MAGIC_FREE 0xf7e1c9a3 queue_entry ``drivers/scsi/arm/queue.c``
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QUEUE_MAGIC_USED 0xf7e1cc33 queue_entry ``drivers/scsi/arm/queue.c``
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NMI_MAGIC 0x48414d4d455201 nmi_s ``arch/mips/include/asm/sn/nmi.h``
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===================== ================ ======================== ==========================================
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