soft link for directory in root FS

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chroot

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)

Solaris