setquota(2)							System Calls Manual						       setquota(2)

Name
       setquota - enable/disable quotas on a file system

Syntax
       setquota(special, file)
       char *special, *file;

Description
       Disk quotas are enabled or disabled with the call.  The special indicates a block special device on which a mounted file system exists.	If
       file is nonzero, it specifies a file in that file system from which to take the quotas.	If file is zero, then quotas are disabled  on  the
       file system.  The quota file must exist; it is normally created with the program.

       Only the superuser can turn quotas on or off.

Return Values
       A zero (0) return value indicates a successful call.  A value of -1 is returned when an error occurs, and errno is set to indicate the rea-
       son for failure.

Diagnostics
       The system call fails when one of the following occurs:

       [ENODEV]       The special does not exist.

       [ENOTBLK]      The special is not a block device.

       [ENXIO]	      The major device number of special is out of range. (This indicates no device driver exists for the associated hardware.)

       [ENOTDIR]      A component of either path prefix is not a directory.

       [EROFS]	      The file resides on a read-only file system.

       [EACCES]       The file resides on a file system different from special.

       [EACCES]       The file is not a plain file.

       [EINVAL]       Either pathname contains a character with the high-order bit set.

       [EINVAL]       The kernel has not been compiled with the QUOTA option.

       [ENAMETOOLONG] A component of either pathname exceeded 255 characters, or the entire length of either path name exceeded 1023 characters.

       [ENOENT]       The file does not exist.

       [ELOOP]	      Too many symbolic links were encountered in translating either pathname.

       [EPERM]	      The caller is not the superuser.

       [EACCES]       Search permission is denied for a component of either path prefix.

       [EIO]	      An I/O error occurred while reading from or writing to the file containing the quotas.

       [EFAULT]       The special or path points outside the process's allocated address space.

See Also
       quota(2), edquota(8), quotacheck(8), quotaon(8),
       "Disk Quotas in a UNIX Environment", Supplementary Documents, Vol. III:System Manager

																       setquota(2)