10-09-2012
Do you get the same result running as root? The path might be set differently.
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chroot(2) System Calls Manual chroot(2)
NAME
chroot - Changes the effective root directory
SYNOPSIS
#include <unistd.h>
int chroot ( const char *path );
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
chroot(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
PARAMETERS
Points to the new effective root directory. If the path parameter refers to a symbolic link, the chroot() function sets the effective root
directory to the directory pointed to by the symbolic link.
DESCRIPTION
The chroot() function causes the directory named by the path parameter to become the effective root directory.
The effective root directory is the starting point when searching for a file's pathname that begins with a / (slash). The current working
directory is not affected by the chroot() function.
The calling process must have superuser privilege in order to change the effective root directory. The calling process must also have
search access to the new effective root directory.
The .. (dot-dot) entry in the effective root directory is interpreted to mean the effective root directory itself. Thus, .. (dot-dot) can-
not be used to access files outside the subtree rooted at the effective root directory.
RETURN VALUES
Upon successful completion, a value of 0 (zero) is returned. If the chroot() function fails, a value of -1 is returned and errno is set to
indicate the error.
ERRORS
If the chroot() function fails, the effective root directory remains unchanged and errno may be set to one of the following values: Search
permission is denied for any component of the pathname. The path parameter points outside the process' allocated address space. An I/O
error occurred while reading from or writing to the file system. More than MAXSYMLINKS symbolic links are encountered while resolving
path. The length of the path argument exceeds PATH_MAX or a pathname component is longer than NAME_MAX. The path parameter does not exist
or points to an empty string. A component of path is not a directory. The process does not have appropriate privilege.
RELATED INFORMATION
Functions: chdir(2)
Commands: cd(1)
Standards: standards(5) delim off
chroot(2)