CHROOT

Section: System Calls (2)
Updated: August 26, 1985
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NAME

chroot - change root directory

SYNOPSIS

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.

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.
[EINVAL]: The pathname contains a character with the high-order bit set.
[ENAMETOOLONG]: A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 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.
[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.

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Time: 00:58:43 GMT, September 26, 2024