CHROOT(2) System Calls Manual CHROOT(2)
NAME
chroot - change root directory
SYNOPSIS
#include <unistd.h>
int chroot(const char *dirname)
DESCRIPTION
Dirname is the address of the pathname of a directory, terminated by a null byte. Chroot causes this directory to become the root direc-
tory, the starting point for path names beginning with ``/''.
In order for a directory to become the root directory a process must have execute (search) access to the directory.
This call is restricted to the super-user.
RETURN VALUE
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate an error.
ERRORS
Chroot will fail and the root directory will be unchanged if one or more of the following are true:
[ENOTDIR] A component of the path name is not a directory.
[ENAMETOOLONG] The path name exceeds PATH_MAX characters.
[ENOENT] The named directory does not exist.
[EACCES] Search permission is denied for any component of the path name.
[ELOOP] Too many symbolic links were encountered in translating the pathname. (Minix-vmd)
[EFAULT] Path points outside the process's allocated address space.
[EIO] An I/O error occurred while reading from or writing to the file system.
SEE ALSO
chdir(2).
4.2 Berkeley Distribution August 26, 1985 CHROOT(2)
