docs: Added All OpenBSD Manuals

1 files changed, 123 insertions, 0 deletions

diff --git a/static/openbsd/man2/chroot.2 b/static/openbsd/man2/chroot.2
new file mode 100644
index 00000000..d9378c85
--- /dev/null
+++ b/static/openbsd/man2/chroot.2
@@ -0,0 +1,123 @@
+.\"	$OpenBSD: chroot.2,v 1.24 2022/03/31 17:27:16 naddy Exp $
+.\"	$NetBSD: chroot.2,v 1.7 1995/02/27 12:32:12 cgd Exp $
+.\"
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" 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. 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.
+.\"
+.\"     @(#)chroot.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd $Mdocdate: March 31 2022 $
+.Dt CHROOT 2
+.Os
+.Sh NAME
+.Nm chroot
+.Nd change root directory
+.Sh SYNOPSIS
+.In unistd.h
+.Ft int
+.Fn chroot "const char *dirname"
+.Sh DESCRIPTION
+.Fa dirname
+is the address of the pathname of a directory, terminated by an ASCII NUL.
+.Fn chroot
+causes
+.Fa dirname
+to become the root directory, that is, the starting point for path
+searches of pathnames beginning with
+.Ql / .
+.Pp
+In order for a directory to become the root directory,
+a process must have execute (search) access for that directory.
+.Pp
+If the program is not currently running with an altered root directory,
+it should be noted that
+.Fn chroot
+has no effect on the process's current directory.
+.Pp
+If the program is already running with an altered root directory, the
+process's current directory is changed to the same new root directory.
+This prevents the current directory from being further up the directory
+tree than the altered root directory.
+.Pp
+This call is restricted to the superuser.
+.Sh RETURN VALUES
+.Rv -std
+.Sh EXAMPLES
+The following example changes the root directory to
+.Va newroot ,
+sets the current directory to the new root, and drops some
+setuid privileges.
+There may be other privileges which need to be dropped as well.
+.Bd -literal -offset indent
+#include <err.h>
+#include <unistd.h>
+
+if (chroot(newroot) != 0 || chdir("/") != 0)
+	err(1, "%s", newroot);
+setresuid(getuid(), getuid(), getuid());
+.Ed
+.Sh ERRORS
+.Fn chroot
+will fail and the root directory will be unchanged if:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the pathname is not a directory.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded
+.Dv NAME_MAX
+characters, or an entire pathname (including the terminating NUL)
+exceeded
+.Dv PATH_MAX
+bytes.
+.It Bq Er ENOENT
+The named directory does not exist.
+.It Bq Er EACCES
+Search permission is denied for any component of the pathname.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EFAULT
+.Fa dirname
+points outside the process's allocated address space.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EPERM
+The caller is not the superuser.
+.El
+.Sh SEE ALSO
+.Xr chdir 2
+.Sh HISTORY
+The
+.Fn chroot
+system call first appeared in
+.At v7 .
+.Sh CAVEATS
+There are ways for a root process to escape from the chroot jail.
+Changes to the directory hierarchy made from outside the chroot jail
+may allow a restricted process to escape, even if it is unprivileged.
+Passing directory file descriptors via
+.Xr recvmsg 2
+from outside the chroot jail may also allow a process to escape.