BSD 2.11 - man page for setquota (bsd section 2)
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setquota - enable/disable quotas on a file system
char *special, *file;
Disc quotas are enabled or disabled with the setquota call. 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 0, then quotas are
disabled on the file system. The quota file must exist; it is normally created with the
Only the super-user may turn quotas on or off.
quota(2), quotacheck(8), quotaon(8)
A 0 return value indicates a successful call. A value of -1 is returned when an error
occurs and errno is set to indicate the reason for failure.
Setquota will fail when one of the following occurs:
[ENOTDIR] A component of either path prefix is not a directory.
[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.
[ENODEV] Special does not exist.
[ENOENT] File does not exist.
[ELOOP] Too many symbolic links were encountered in translating either pathname.
[EPERM] The caller is not the super-user.
[ENOTBLK] 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).
[EROFS] File resides on a read-only file system.
[EACCES] Search permission is denied for a component of either path prefix.
[EACCES] File resides on a file system different from special.
[EACCES] File is not a plain file.
[EIO] An I/O error occurred while reading from or writing to the file containing
[EFAULT] Special or path points outside the process's allocated address space.
The error codes are in a state of disarray; too many errors appear to the caller as one
4.2 Berkeley Distribution August 26, 1985 SETQUOTA(2)
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