diff options
author | Michael Shalayeff <mickey@cvs.openbsd.org> | 1997-08-18 01:52:52 +0000 |
---|---|---|
committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 1997-08-18 01:52:52 +0000 |
commit | a40dd2fb1f521296ac73e77e22f23bdb19b2ec66 (patch) | |
tree | 17544eb76064281f23289f41c9e7831984f2c958 /share/man | |
parent | dc6a3fdd9cbbd5246f012eb6943be03097f85803 (diff) |
more cleanup w/ jason
Diffstat (limited to 'share/man')
-rw-r--r-- | share/man/man4/options.4 | 121 |
1 files changed, 19 insertions, 102 deletions
diff --git a/share/man/man4/options.4 b/share/man/man4/options.4 index f7cb8119471..013e7fa399c 100644 --- a/share/man/man4/options.4 +++ b/share/man/man4/options.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: options.4,v 1.1 1997/08/18 01:27:54 mickey Exp $ +.\" $OpenBSD: options.4,v 1.2 1997/08/18 01:52:51 mickey Exp $ .\" $NetBSD: options.4,v 1.21 1997/06/25 03:13:00 thorpej Exp $ .\" .\" Copyright (c) 1996 @@ -80,34 +80,8 @@ compatibility, without which programs using the old interface produce an .Dq inapropriate ioctl error. -.It Cd option COMPAT_11 -Enable binary compatibility with -.Nx 1.1 . -This allows binaries running on the i386 port to gain direct access to -the io ports by opening -.Pa /dev/io -read/write. This functionality was -replaced by -.Xr i386_iopl 2 -post 1.1. -On the -.Tn Atari -port, the location of the disk label was moved after 1.1. When the -.Em COMPAT_11 -option is set, the kernel will read (pre) 1.1 style disk labels as a -last resort. When a disklabel is re-written, the old style label will -be replaced with a post 1.1 style label. -.It Cd option COMPAT_12 -Enable binary compatibility with -.Nx 1.2 . -This allows the use of old syscalls for -.Fn reboot , and -.Fn swapon . -The syscall numbers was changed post 1.2 to add functionality to the -reboot syscall, and the new -.Fn swapctl -interface was introduced. .It Cd option COMPAT_43 +Use of this option is discouraged extremely. Enables compatibility with .Bx 4.3 . This adds an old syscall for lseek. It also adds the ioctls for @@ -120,8 +94,7 @@ It also provides backwards compatibility with SIOC[GS]IF{ADDR,DSTADDR,BRDADDR,NETMASK} interface ioctls, including binary compatibility with code written before the introduction of the sa_len field in sockaddrs. -It also enables -support for some older pre BSD 4.4 socket calls. +It also enables support for some older pre BSD 4.4 socket calls. .It Cd option COMPAT_SVR4 On those architectures that support it, this enables binary compatibility with @@ -235,11 +208,11 @@ for details. .El .Ss File Systems .Bl -ohang -.It Cd file-system FFS +.It Cd option FFS Includes code implementing the Berkeley Fast File System .Em ( FFS ) . Most machines need this if they are not running diskless. -.It Cd file-system EXT2FS +.It Cd option EXT2FS Includes code implementing the Second Extended File System .Em ( EXT2FS ) . This is the most commonly used file system on the Linux operating system, @@ -250,15 +223,7 @@ like the "behavior on errors" are not implemented. This file system can't be used with UID or GID greather than 65535. See .Xr mount_ext2fs 8 for details. -.It Cd file-system LFS -Include the log structured file system -.Em ( LFS ) . -See -.Xr mount_lfs 8 -and -.Xr newlfs 8 -for details. -.It Cd file-system MFS +.It Cd option MFS Include the memory file system .Em ( MFS ) . This file system stores files in swappable memory, and produces @@ -268,7 +233,7 @@ for and similar file systems. See .Xr mount_mfs 8 for details. -.It Cd file-system NFS +.It Cd option NFS Include the client side of the .Em NFS (Network File System) remote file sharing protocol. @@ -280,13 +245,13 @@ work. See and .Xr nfsiod 8 for details. -.It Cd file-system CD9660 +.It Cd option CD9660 Includes code for the ISO 9660 + Rock Ridge file system, which is the standard file system on many CD-ROMs. Useful mostly if you have a CD drive. See .Xr mount_cd9660 8 for details. -.It Cd file-system MSDOSFS +.It Cd option MSDOSFS Includes the .Tn MS-DOS FAT file system, which is reportedly still used @@ -300,7 +265,7 @@ file names. see and .Xr fsck_msdos 8 for details. -.It Cd file-system FDESC +.It Cd option FDESC Includes code for a file system, conventionally mounted on .Pa /dev/fd , which permits access to the per-process file descriptor space via @@ -323,7 +288,7 @@ and on .Pa /dev/stdout , and .Pa /dev/stderr . -.It Cd file-system KERNFS +.It Cd option KERNFS Includes code which permits the mounting of a special file system (normally mounted on .Pa /kern ) @@ -332,13 +297,13 @@ may be found. See .Xr mount_kernfs 8 for details. -.It Cd file-system NULLFS +.It Cd option NULLFS Includes code for a loopback file system. This permits portions of the file hierarchy to be re-mounted in other places. The code really exists to provide an example of a stackable file system layer. See .Xr mount_null 8 for details. -.It Cd file-system PORTAL +.It Cd option PORTAL Includes the (experimental) portal filesystem. This permits interesting tricks like opening TCP sockets by opening files in the file system. The portal file system is conventionally mounted on @@ -346,7 +311,7 @@ file system. The portal file system is conventionally mounted on and is partially implemented by a special daemon. See .Xr mount_portal 8 for details. -.It Cd file-system PROCFS +.It Cd option PROCFS Includes code for a special file system (conventionally mounted on .Pa /proc ) in which the process space becomes visible in the file system. Among @@ -356,14 +321,14 @@ visible as files, and signals may be sent to processes by writing to files in the procfs namespace. See .Xr mount_procfs 8 for details. -.It Cd file-system UMAPFS +.It Cd option UMAPFS Includes a loopback file system in which user and group ids may be remapped -- this can be useful when mounting alien file systems with different uids and gids than the local system. See .Xr mount_umap 8 for details. -.It Cd file-system UNION +.It Cd option UNION Includes code for the union file system, which permits directories to be mounted on top of each other in such a way that both file systems remain visible -- this permits tricks like allowing writing (and the @@ -465,11 +430,11 @@ requiring a suid root program to do it. This option changes part of the VM/pmap interface, to allow for non-contiguous memory. On some ports it is not an option. These ports typically only use one of the interfaces. -.It Cd option MEMORY_DISK_HOOKS +.It Cd option RAMDISK_DISK_HOOKS This option allows for some machine dependent functions to be called when the ramdisk driver is configured. This can result in automatically loading a ramdisk from floppy on open (among other things). -.It Cd option MEMORY_DISK_IS_ROOT +.It Cd option RAMDISK_DISK_IS_ROOT Forces the ramdisk to be the root device. This can only be overridden when the kernel is booted in the 'ask-for-root' mode. .It Cd option NTP @@ -501,36 +466,6 @@ is not an integer, the .Em NTP option also enables extended-precision arithmetic to keep track of fractional clock ticks at NTP time-format precision. -.It Cd option PPS -This option enables a kernel serial line discipline for receiving time -phase signals from an external reference clock such as a radio clock. -(The -.Em NTP -option (which see) must be on if the -.Em PPS -option is used.) -Some reference clocks generate a pulse per second (PPS) signal in -phase with their time source. The -.Em PPS -line discipline receives this signal on either the data leads -or the DCD control lead of a serial port. -.Em NTP -uses the PPS signal to discipline the local clock oscillator to a high -degree of precision (typically less than 50 microseconds in time and -0.1 ppm in accuracy). -.Em PPS -can also generate a serial output pulse when the system receives a PPS -interrupt. This can be used to measure the system interrupt latency -and thus calibrate -.Em NTP -to account for it. -Using -.Em PPS -usually requires a -gadget box -to convert from TTL to RS-232 signal levels. -The gadget box and PPS are described in more detail in the HTML documentation -shipped with the xntpd distribution. .It Cd option SETUIDSCRIPTS Allows scripts with the setuid bit set to execute as the effective user rather than the real user, just like binary executables. @@ -728,16 +663,8 @@ bugs. Include support for Internetwork Packet Exchange protocol. .It Cd option NETATALK Include support for AppleTalk. -.It Cd option IPNOPRIVPORTS -Normally, only root can bind a socket descriptor to a so-called -.Dq privileged -TCP -port, that is, a port number in the range 0-1023. This option -eliminates those checks from the kernel. This can be useful if there -is a desire to allow daemons without privileges to bind those ports, -e.g. on firewalls. The security tradeoffs in doing this are subtle. -This option should only be used by experts. .It Cd option TCP_COMPAT_42 +Use of this option is discouraged extremely. TCP bug compatibility with 4.2BSD. In 4.2BSD, TCP sequence numbers were 32-bit signed values. Modern implementations of TCP use unsigned values. This option clamps the initial sequence number to start in @@ -814,16 +741,6 @@ objects (i.e. BSS pages)). -- you cannot actually run without this .Dq option . -.It Cd option VNODEPAGER -Support for mmap()ing of files. (Specifically, this enables the -virtual memory module responsible for handling page faults on mapped -files ( -.Dq plain file -vnodes)). -.Em MANDATORY --- you cannot actually run without -this -.Dq option . .It Cd option DEVPAGER Support for mmap()ing of devices. (Specifically, this enables the virtual memory module responsible for handling page faults on mapped |