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CHROOT.2
Upload User: jnzhq888
Upload Date: 2007-01-18
Package Size: 51694k
Code Size: 2k
Category:
OS Develop
Development Platform:
WINDOWS
- ." Copyright (c) 1983 Regents of the University of California.
- ." All rights reserved. The Berkeley software License Agreement
- ." specifies the terms and conditions for redistribution.
- ."
- ." @(#)chroot.2 6.3 (Berkeley) 8/26/85
- ."
- .TH CHROOT 2 "August 26, 1985"
- .UC 5
- .SH NAME
- chroot - change root directory
- .SH SYNOPSIS
- .nf
- .ft B
- #include <unistd.h>
- int chroot(const char *fIdirnamefP)
- .ft R
- .fi
- .SH DESCRIPTION
- .I Dirname
- is the address of the pathname of a directory, terminated by a null byte.
- .B Chroot
- causes this directory
- to become the root directory,
- the starting point for path names beginning with ``/''.
- .PP
- In order for a directory to become the root directory
- a process must have execute (search) access to the directory.
- .PP
- This call is restricted to the super-user.
- .SH "RETURN VALUE
- Upon successful completion, a value of 0 is returned. Otherwise,
- a value of -1 is returned and fBerrnofP is set to indicate an error.
- .SH ERRORS
- .B Chroot
- will fail and the root directory will be unchanged if
- one or more of the following are true:
- .TP 15
- [ENOTDIR]
- A component of the path name is not a directory.
- .TP 15
- [ENAMETOOLONG]
- The path name exceeds PATH_MAX characters.
- .TP 15
- [ENOENT]
- The named directory does not exist.
- .TP 15
- [EACCES]
- Search permission is denied for any component of the path name.
- .TP 15
- [ELOOP]
- Too many symbolic links were encountered in translating the pathname.
- (Minix-vmd)
- .TP 15
- [EFAULT]
- .I Path
- points outside the process's allocated address space.
- .TP 15
- [EIO]
- An I/O error occurred while reading from or writing to the file system.
- .SH "SEE ALSO"
- .BR chdir (2).