CHROOT(2)
NAME
chroot − change root directory
SYNTAX
chroot(dirname)
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 directory, 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.
Upon successful completion, a value of 0 is returned. Otherwise, a value of −1 is returned and errno is set to indicate an error.
DIAGNOSTICS
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.
[ENOENT] The pathname was too long.
[EPERM] The argument contains a byte with the high-order bit set.
[ENOENT] The named directory does not exist.
[EACCES] Search permission is denied for any component of the path name.
[EFAULT] Path points outside the process’s allocated address space.
[ELOOP] Too many symbolic links were encountered in translating the pathname.