minix/servers/vfs/vmnt.h
Ben Gras 3cc092ff06 . new kernel call sysctl for generic unprivileged system operations;
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.
2009-01-26 17:43:59 +00:00

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C

EXTERN struct vmnt {
int m_fs_e; /* FS process' kernel endpoint */
dev_t m_dev; /* device number */
int m_flags; /* mount flags */
struct vnode *m_mounted_on; /* the vnode on which the partition is mounted */
struct vnode *m_root_node; /* root vnode */
} vmnt[NR_MNTS];
#define NIL_VMNT (struct vmnt *) 0