3cc092ff06
now used for printing diagnostic messages through the kernel message buffer. this lets processes print diagnostics without sending messages to tty and log directly, simplifying the message protocol a lot and reducing difficulties with deadlocks and other situations in which diagnostics are blackholed (e.g. grants don't work). this makes DIAGNOSTICS(_S), ASYN_DIAGNOSTICS and DIAG_REPL obsolete, although tty and log still accept the codes for 'old' binaries. This also simplifies diagnostics in several servers and drivers - only tty needs its own kputc() now. . simplifications in vfs, and some effort to get the vnode references right (consistent) even during shutdown. m_mounted_on is now NULL for root filesystems (!) (the original and new root), a less awkward special case than 'm_mounted_on == m_root_node'. root now has exactly one reference, to root, if no files are open, just like all other filesystems. m_driver_e is unused.
12 lines
375 B
C
12 lines
375 B
C
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EXTERN struct vmnt {
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int m_fs_e; /* FS process' kernel endpoint */
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dev_t m_dev; /* device number */
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int m_flags; /* mount flags */
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struct vnode *m_mounted_on; /* the vnode on which the partition is mounted */
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struct vnode *m_root_node; /* root vnode */
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} vmnt[NR_MNTS];
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#define NIL_VMNT (struct vmnt *) 0
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