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updatepri(9) -- perform round-robin scheduling of runnable processes
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Each process has three different priorities stored in struct proc: p_usrpri, p_nativepri, and p_priority. The p_usrpri member is the user priority of the process calculated from a process' estimated ... |
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uprintf(9) -- formatted output conversion
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The printf(9) family of functions are similar to the printf(3) family of functions. The three functions each use a different output stream. The uprintf() function outputs to the current process' cont... |
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useracc(9) -- check memory regions for accessibility
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The kernacc() and useracc() functions check whether operations of the type specified in rw are permitted in the range of virtual addresses given by addr and len. The possible values of rw are any bitw... |
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utopia(9) -- Driver module for ATM PHY chips
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This module is used by all ATM drivers for cards that use a number of known PHY chips to provide uniform functionality. The module implements status monitoring in either interrupt or polling mode, med... |
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vaccess(9) -- generate an access control decision using vnode parameters
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This call implements the logic for the UNIX discretionary file security model common to many file systems in FreeBSD. It accepts the vnodes type type, permissions via file_mode, owning UID file_uid, o... |
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vaccess_acl_posix1e(9) -- generate a POSIX.1e ACL access control decision using vnode parameters
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This call implements the logic for the UNIX discretionary file security model with POSIX.1e ACL extensions. It accepts the vnodes type type, owning UID file_uid, owning GID file_gid, access ACL for th... |
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vcount(9) -- get total number of references to a device
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vcount() is used to get the number of references to a particular device. It allows for the fact that multiple vnodes may reference the same device. count_dev() does the same thing as vcount(), but tak... |
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vdrop(9) -- acquire/release a hold on a vnode
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The vhold() function increments the v_holdcnt of the given vnode. If the vnode has already been added to the free list and is still referenced, it will be removed. The vdrop() function decrements the ... |
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vflush(9) -- flush vnodes for a mount point
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The vflush() function removes any vnodes in the vnode table that belong to the given mount structure. Its arguments are: mp The mount point whose vnodes should be removed. rootrefs The number of refer... |
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VFS(9) -- kernel interface to file systems
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Calls used to set or query file systems for settings or information. File systems that don't implement a VFS operation should use the appropriate vfs_std function from src/sys/kern/vfs_default.c rath... |
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vfsconf(9) -- vfs configuration information
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Each file system type known to the kernel has a vfsconf structure that contains the information required to create a new mount of that file systems type. struct vfsconf { struct vfsops *vfc_vfsops; /*... |
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vfs_busy(9) -- marks a mount point as busy
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The vfs_busy() function marks a mount point as busy. The purpose of this function is to synchronize access to a mount point. It also delays unmounting by sleeping on mp if the MNTK_UNMOUNT flag is set... |
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VFS_CHECKEXP(9) -- check if a file system is exported to a client
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This is used by the NFS server to check if a mount point is exported to a client. Its arguments are: mp The mount point to be checked. nam An mbuf containing the network address of the client. exflags... |
