diff options
Diffstat (limited to 'sbin/mount_std')
| -rw-r--r-- | sbin/mount_std/Makefile | 16 | ||||
| -rw-r--r-- | sbin/mount_std/mount_devfs.8 | 90 | ||||
| -rw-r--r-- | sbin/mount_std/mount_fdesc.8 | 171 | ||||
| -rw-r--r-- | sbin/mount_std/mount_kernfs.8 | 131 | ||||
| -rw-r--r-- | sbin/mount_std/mount_procfs.8 | 253 | ||||
| -rw-r--r-- | sbin/mount_std/mount_std.8 | 134 | ||||
| -rw-r--r-- | sbin/mount_std/mount_std.c | 122 |
7 files changed, 917 insertions, 0 deletions
diff --git a/sbin/mount_std/Makefile b/sbin/mount_std/Makefile new file mode 100644 index 0000000..ff01131 --- /dev/null +++ b/sbin/mount_std/Makefile @@ -0,0 +1,16 @@ +# @(#)Makefile 8.2 (Berkeley) 3/27/94 + +PROG= mount_std +SRCS= mount_std.c getmntopts.c +MAN8= mount_std.8 mount_devfs.8 mount_fdesc.8 mount_kernfs.8 mount_procfs.8 + +MOUNT= ${.CURDIR}/../mount +CFLAGS+= -I${MOUNT} +.PATH: ${MOUNT} + +LINKS= ${BINDIR}/mount_std ${BINDIR}/mount_devfs \ + ${BINDIR}/mount_std ${BINDIR}/mount_fdesc \ + ${BINDIR}/mount_std ${BINDIR}/mount_kernfs \ + ${BINDIR}/mount_std ${BINDIR}/mount_procfs + +.include <bsd.prog.mk> diff --git a/sbin/mount_std/mount_devfs.8 b/sbin/mount_std/mount_devfs.8 new file mode 100644 index 0000000..8c4d63a --- /dev/null +++ b/sbin/mount_std/mount_devfs.8 @@ -0,0 +1,90 @@ +.\" +.\" Copyright (c) 1992, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" All rights reserved. +.\" +.\" This code is derived from software donated to Berkeley by +.\" Jan-Simon Pendry. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)mount_devfs.8 8.2 (Berkeley) 3/27/94 +.\" +.\" +.Dd March 27, 1994 +.Dt MOUNT_DEFVS 8 +.Os FreeBSD 2.0 +.Sh NAME +.Nm mount_devfs +.Nd mount the /devs file system +.Sh SYNOPSIS +.Nm mount_devfs +.Op Fl o Ar options +.Ar "devfs" +.Ar mount_point +.Sh DESCRIPTION +The +.Nm mount_devfs +command attaches an instance of the kernel's device +namespace to the global filesystem namespace. +The conventional mount point is +.Pa /devs . +This command is normally executed by +.Xr mount 8 +at boot time. +.Pp +The filesystem includes several directories, links, symbolic links and devices, +some of which can also be written. +In a chroot'ed environment, +.Nm +can be used to create a new +.Pa /devs +mount point. +.Pp +The options are as follows: +.Bl -tag -width indent +.It Fl o +Options are specified with a +.Fl o +flag followed by a comma separated string of options. +See the +.Xr mount 8 +man page for possible options and their meanings. +.El +.Sh SEE ALSO +.Xr mount 2 , +.Xr unmount 2 , +.Xr fstab 5 , +.Xr mount 8 +.Sh CAVEATS +This filesystem may not be NFS-exported. +.Sh HISTORY +The +.Nm mount_devfs +utility first appeared in FreeBSD 2.0 diff --git a/sbin/mount_std/mount_fdesc.8 b/sbin/mount_std/mount_fdesc.8 new file mode 100644 index 0000000..a61c952 --- /dev/null +++ b/sbin/mount_std/mount_fdesc.8 @@ -0,0 +1,171 @@ +.\" +.\" Copyright (c) 1992, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" All rights reserved. +.\" +.\" This code is derived from software donated to Berkeley by +.\" Jan-Simon Pendry. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)mount_fdesc.8 8.2 (Berkeley) 3/27/94 +.\" +.\" +.Dd March 27, 1994 +.Dt MOUNT_FDESC 8 +.Os BSD 4.4 +.Sh NAME +.Nm mount_fdesc +.Nd mount the file-descriptor file system +.Sh SYNOPSIS +.Nm mount_fdesc +.Op Fl o Ar options +.Ar fdesc +.Ar mount_point +.Sh DESCRIPTION +The +.Nm mount_fdesc +command attaches an instance of the per-process file descriptor +namespace to the global filesystem namespace. +The conventional mount point is +.Pa /dev +and the filesystem should be union mounted in order to augment, +rather than replace, the existing entries in +.Pa /dev . +This command is normally executed by +.Xr mount 8 +at boot time. +.Pp +The options are as follows: +.Bl -tag -width indent +.It Fl o +Options are specified with a +.Fl o +flag followed by a comma separated string of options. +See the +.Xr mount 8 +man page for possible options and their meanings. +.El +.Pp +The contents of the mount point are +.Pa fd , +.Pa stderr , +.Pa stdin , +.Pa stdout +and +.Pa tty . +.Pp +.Pa fd +is a directory whose contents +appear as a list of numbered files +which correspond to the open files of the process reading the +directory. +The files +.Pa /dev/fd/0 +through +.Pa /dev/fd/# +refer to file descriptors which can be accessed through the file +system. +If the file descriptor is open and the mode the file is being opened +with is a subset of the mode of the existing descriptor, the call: +.Bd -literal -offset indent +fd = open("/dev/fd/0", mode); +.Ed +.Pp +and the call: +.Bd -literal -offset indent +fd = fcntl(0, F_DUPFD, 0); +.Ed +.Pp +are equivalent. +.Pp +The files +.Pa /dev/stdin , +.Pa /dev/stdout +and +.Pa /dev/stderr +appear as symlinks to the relevant entry in the +.Pa /dev/fd +sub-directory. +Opening them is equivalent to the following calls: +.Bd -literal -offset indent +fd = fcntl(STDIN_FILENO, F_DUPFD, 0); +fd = fcntl(STDOUT_FILENO, F_DUPFD, 0); +fd = fcntl(STDERR_FILENO, F_DUPFD, 0); +.Ed +.Pp +Flags to the +.Xr open 2 +call other than +.Dv O_RDONLY , +.Dv O_WRONLY +and +.Dv O_RDWR +are ignored. +.Pp +The +.Pa /dev/tty +entry is an indirect reference to the current process's controlling terminal. +It appears as a named pipe (FIFO) but behaves in exactly the same way as +the real controlling terminal device. +.Sh FILES +.Bl -tag -width /dev/stderr -compact +.It Pa /dev/fd/# +.It Pa /dev/stdin +.It Pa /dev/stdout +.It Pa /dev/stderr +.It Pa /dev/tty +.El +.Sh SEE ALSO +.Xr mount 2 , +.Xr unmount 2 , +.Xr tty 4 , +.Xr fstab 5 , +.Xr mount 8 +.Sh CAVEATS +No +.Pa . +and +.Pa .. +entries appear when listing the contents of the +.Pa /dev/fd +directory. +This makes sense in the context of this filesystem, but is inconsistent +with usual filesystem conventions. +However, it is still possible to refer to both +.Pa . +and +.Pa .. +in a pathname. +.Pp +This filesystem may not be NFS-exported. +.Sh HISTORY +The +.Nm mount_fdesc +utility first appeared in 4.4BSD. diff --git a/sbin/mount_std/mount_kernfs.8 b/sbin/mount_std/mount_kernfs.8 new file mode 100644 index 0000000..787c174 --- /dev/null +++ b/sbin/mount_std/mount_kernfs.8 @@ -0,0 +1,131 @@ +.\" +.\" Copyright (c) 1992, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" All rights reserved. +.\" +.\" This code is derived from software donated to Berkeley by +.\" Jan-Simon Pendry. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)mount_kernfs.8 8.2 (Berkeley) 3/27/94 +.\" +.\" +.Dd March 27, 1994 +.Dt MOUNT_KERNFS 8 +.Os BSD 4.4 +.Sh NAME +.Nm mount_kernfs +.Nd mount the /kern file system +.Sh SYNOPSIS +.Nm mount_kernfs +.Op Fl o Ar options +.Ar /kern +.Ar mount_point +.Sh DESCRIPTION +The +.Nm mount_kern +command attaches an instance of the kernel parameter +namespace to the global filesystem namespace. +The conventional mount point is +.Pa /kern . +This command is normally executed by +.Xr mount 8 +at boot time. +.Pp +The filesystem includes several regular files which can be read, +some of which can also be written. +The contents of the files is in a machine-independent format, +either a string, or an integer in decimal ASCII. +Where numbers are returned, a trailing newline character is also added. +.Pp +The options are as follows: +.Bl -tag -width indent +.It Fl o +Options are specified with a +.Fl o +flag followed by a comma separated string of options. +See the +.Xr mount 8 +man page for possible options and their meanings. +.El +.Sh FILES +.Bl -tag -width copyright -compact +.It Pa boottime +the time at which the system was last booted (decimal ASCII). +.It Pa copyright +kernel copyright message. +.It Pa hostname +the hostname, with a trailing newline. +The hostname can be changed by writing to this file. +A trailing newline will be stripped from the hostname being written. +.It Pa hz +the frequency of the system clock (decimal ASCII). +.It Pa loadavg +the 1, 5 and 15 minute load average in kernel fixed-point format. +The final integer is the fix-point scaling factor. +All numbers are in decimal ASCII. +.It Pa pagesize +the machine pagesize (decimal ASCII). +.It Pa physmem +the number of pages of physical memory in the machine (decimal ASCII). +.It Pa root +the system root directory. +In a chroot'ed environment, +.Nm +can be used to create a new +.Pa /kern +mount point. +.Pa /kern/root +will then refer to the system global root, not the current process root. +.It Pa rootdev +the root device. +.It Pa rrootdev +the raw root device. +.It Pa time +the second and microsecond value of the system clock. +Both numbers are in decimal ASCII. +.It Pa version +the kernel version string. +The head line for +.Pa /etc/motd +can be generated by running: +.Dq Ic "sed 1q /kern/version" +.El +.Sh SEE ALSO +.Xr mount 2 , +.Xr unmount 2 , +.Xr fstab 5 , +.Xr mount 8 +.Sh CAVEATS +This filesystem may not be NFS-exported. +.Sh HISTORY +The +.Nm mount_kernfs +utility first appeared in 4.4BSD. diff --git a/sbin/mount_std/mount_procfs.8 b/sbin/mount_std/mount_procfs.8 new file mode 100644 index 0000000..3aa20e0 --- /dev/null +++ b/sbin/mount_std/mount_procfs.8 @@ -0,0 +1,253 @@ +.\" +.\" Copyright (c) 1992, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" All rights reserved. +.\" +.\" This code is derived from software donated to Berkeley by +.\" Jan-Simon Pendry. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)mount_procfs.8 8.2 (Berkeley) 3/27/94 +.\" +.\" +.Dd March 27, 1994 +.Dt MOUNT_PROCFS 8 +.Os BSD 4.4 +.Sh NAME +.Nm mount_procfs +.Nd mount the process file system +.Sh SYNOPSIS +.Nm mount_procfs +.Op Fl o Ar options +.Pa /proc +.Pa mount_point +.Sh DESCRIPTION +The +.Nm mount_procfs +command attaches an instance of the process +namespace to the global filesystem namespace. +The conventional mount point is +.Pa /proc . +This command is normally executed by +.Xr mount 8 +at boot time. +.Pp +The options are as follows: +.Bl -tag -width indent +.It Fl o +Options are specified with a +.Fl o +flag followed by a comma separated string of options. +See the +.Xr mount 8 +man page for possible options and their meanings. +.El +.Pp +The root of the process filesystem +contains an entry for each active process. +These processes are visible as a directory whose +name is the process' pid. +In addition, the special entry +.Pa curproc +references the current process. +.Pp +Each directory contains several files. +.Bl -tag -width status +.It Pa ctl +a writeonly file which supports a variety +of control operations. +Control commands are written as strings to the +.Pa ctl +file. +The control commands are: +.Bl -tag -width detach -compact +.It attach +stops the target process and arranges for the sending +process to become the debug control process. +.It detach +continue execution of the target process and +remove it from control by the debug process (which +need not be the sending process). +.It run +continue running the target process until +a signal is delivered, a breakpoint is hit, or the +target process exits. +.It step +single step the target process, with no signal delivery. +.It wait +wait for the target process to come to a steady +state ready for debugging. +The target process must be in this state before +any of the other commands are allowed. +.El +.Pp +The string can also be the name of a signal, lower case +and without the +.Dv SIG +prefix, +in which case that signal is delivered to the process +(see +.Xr sigaction 2 ). +.It Pa file +A reference to the vnode from which the process text was read. +This can be used to gain access to the process' symbol table, +or to start another copy of the process. +.It Pa mem +The complete virtual memory image of the process. +Only those address which exist in the process can be accessed. +Reads and writes to this file modify the process. +Writes to the text segment remain private to the process. +.It Pa note +Not implemented. +.It Pa notepg +Not implemented. +.It Pa regs +Allows read and write access to the process' register set. +This file contains a binary data structure +.Dv "struct regs" +defined in +.Pa <machine/reg.h> . +.Pa regs +can only be written when the process is stopped. +.It Pa fpregs +The floating point registers as defined by +.Dv "struct fpregs" +in +.Pa <machine/reg.h> . +.Pa fpregs +is only implemented on machines which have distinct general +purpose and floating point register sets. +.It Pa status +The process status. +This file is readonly and returns a single line containing +multiple space-separated fields as follows: +.Pp +.Bl -bullet -compact +.It +command name +.It +process id +.It +parent process id +.It +process group id +.It +session id +.It +.Ar major,minor +of the controlling terminal, or +.Dv -1,-1 +if there is no controlling terminal. +.It +a list of process flags: +.Dv ctty +if there is a controlling terminal, +.Dv sldr +if the process is a session leader, +.Dv noflags +if neither of the other two flags are set. +.It +the process start time in seconds and microseconds, +comma separated. +.It +the user time in seconds and microseconds, +comma separated. +.It +the system time in seconds and microseconds, +comma separated. +.It +the wait channel message +.It +the process credentials consisting of +the effective user id +and the list of groups (whose first member +is the effective group id) +all comma separated. +.El +.El +.Pp +In a normal debugging environment, +where the target is fork/exec'd by the debugger, +the debugger should fork and the child should stop +itself (with a self-inflicted +.Dv SIGSTOP +for example). +The parent should issue a +.Dv wait +and then an +.Dv attach +command via the appropriate +.Pa ctl +file. +The child process will receive a +.Dv SIGTRAP +immediately after the call to exec (see +.Xr execve 2 ). +.Sh FILES +.Bl -tag -width /proc/curproc -compact +.It Pa /proc/# +.It Pa /proc/curproc +.It Pa /proc/curproc/ctl +.It Pa /proc/curproc/file +.It Pa /proc/curproc/mem +.It Pa /proc/curproc/note +.It Pa /proc/curproc/notepg +.It Pa /proc/curproc/regs +.It Pa /proc/curproc/fpregs +.It Pa /proc/curproc/status +.El +.Sh SEE ALSO +.Xr sigaction 2 , +.Xr mount 2 , +.Xr unmount 2 , +.Sh CAVEATS +No +.Pa . +and +.Pa .. +entries appear when listing the contents of the +.Pa /proc +directory. +This makes sense in the context of this filesystem, but is inconsistent +with usual filesystem conventions. +However, it is still possible to refer to both +.Pa . +and +.Pa .. +in a pathname. +.Pp +This filesystem may not be NFS-exported +since most of the functionality of +.Dv procfs +requires that state be maintained. +.Sh HISTORY +The +.Nm mount_procfs +utility first appeared in 4.4BSD. diff --git a/sbin/mount_std/mount_std.8 b/sbin/mount_std/mount_std.8 new file mode 100644 index 0000000..f8d22a4 --- /dev/null +++ b/sbin/mount_std/mount_std.8 @@ -0,0 +1,134 @@ +.\" +.\" Copyright (c) 1992, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" All rights reserved. +.\" +.\" This code is derived from software donated to Berkeley by +.\" Jan-Simon Pendry. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $Id$ +.\" +.Dd May 13, 1996 +.Dt MOUNT_STD 8 +.Os FreeBSD 2.2 +.Sh NAME +.Nm mount_std +.Nd mount ``standard'' filesystems +.Sh SYNOPSIS +.Nm mount_ Ns Ar fsname +.Op Fl o Ar options +.Ar "devfs" +.Ar mount_point +.Sh DESCRIPTION +The +.Nm +command is a generic mechanism for attaching ``standard'' filesystems to +the filesystem. A ``standard'' filesystem is one which: +.Bl -enum -offset indent +.It +accepts only the standard +.Fl o +options +.Dq ro +.Pq ``rdonly'' , +.Dq rw , +.Dq nodev , +.Dq noexec , +.Dq nosuid , +and +.Dq union . +.It +has a kernel filesystem module name the same as its user-visible name. +.It +requires no other special processing on the part of the +.Nm mount_std +command. +.El +.Pp +The +.Nm +command examines its zeroth command-line argument (the name by which +it was called) to determine the type of filesystem to be mounted. If +it is called by a name which does not end in +.Dq Li _ Ns Ar fsname , +.Nm +will issue a diagnostic and return an error. The +.Nm +command is normally installed with appropriate links to commands for +the distributed filesystems which can be mounted in this way; +for information on the function of each filesystem, see the manual page +for that specific +.Nm mount_ Ns Ar fsname +command. +.Sh DIAGNOSTICS +.Bl -diag +.It argv[0] must end in _fsname +The +.Nm mount_std +command was called with a zero'th argument which does not specify a +filesystem type to be mounted. +.It vfsload(%s) +.Nm +was unable to load a kernel module implementing the %s filesystem +type. +.It %s filesystem not available +The specified filesystem type was not present in the kernel and no +loadable module for it was found. +.El +.Sh SEE ALSO +.Xr mount 2 , +.Xr unmount 2 , +.Xr getvfsbyname 3 , +.Xr fstab 5 , +.Xr mount 8 , +.Xr mount_devfs 8 , +.Xr mount_fdesc 8 , +.Xr mount_kernfs 8 , +.Xr mount_procfs 8 +.Sh HISTORY +The +.Nm mount_std +utility first appeared in +.Fx 2.2 . +Loadable filesystem modules first appeared in +.Fx 2.0 . +The +.Dq fdesc , +.Dq kernfs , +and +.Dq procfs +filesystem types first appeared in +.Fx 2.0 ; +the +.Dq devfs +filesystem type first appeared in +.Fx 2.2 . + diff --git a/sbin/mount_std/mount_std.c b/sbin/mount_std/mount_std.c new file mode 100644 index 0000000..5d0615a --- /dev/null +++ b/sbin/mount_std/mount_std.c @@ -0,0 +1,122 @@ +/* + * Copyright (c) 1990, 1992 Jan-Simon Pendry + * Copyright (c) 1992, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Jan-Simon Pendry. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +char copyright[] = +"@(#) Copyright (c) 1992, 1993, 1994\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static const char rcsid[] = + "$Id$"; +#endif /* not lint */ + +#include <sys/param.h> +#include <sys/mount.h> + +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> + +#include "mntopts.h" + +static struct mntopt mopts[] = { + MOPT_STDOPTS, + { NULL } +}; + +static __dead void usage __P((void)) __dead2; +static const char *fsname; + +int +main(argc, argv) + int argc; + char *argv[]; +{ + int ch, mntflags; + struct vfsconf *vfc; + + fsname = strrchr(argv[0], '_'); + if (!fsname || strcmp(fsname, "_std") == 0) + errx(EX_USAGE, "argv[0] must end in _fsname"); + + fsname++; + + mntflags = 0; + while ((ch = getopt(argc, argv, "o:")) != EOF) + switch (ch) { + case 'o': + getmntopts(optarg, mopts, &mntflags, 0); + break; + case '?': + default: + usage(); + } + argc -= optind; + argv += optind; + + if (argc != 2) + usage(); + + vfc = getvfsbyname(fsname); + if(!vfc && vfsisloadable(fsname)) { + if(vfsload(fsname)) { + err(EX_OSERR, "vfsload(%s)", fsname); + } + endvfsent(); + vfc = getvfsbyname(fsname); + } + if (!vfc) + errx(EX_OSERR, "%s filesystem not available", fsname); + + if (mount(vfc->vfc_index, argv[1], mntflags, NULL)) + err(EX_OSERR, NULL); + exit(0); +} + +void +usage() +{ + (void)fprintf(stderr, + "usage: mount_%s [-o options] what_to_mount mount_point\n", + fsname); + exit(EX_USAGE); +} |
