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31 .\" @(#)quotactl.2 8.2 (Berkeley) 3/10/95
32 .\" $FreeBSD: src/lib/libc/sys/quotactl.2,v 1.12.2.7 2002/05/20 09:06:37 roam Exp $
39 .Nd manipulate filesystem quotas
46 .Fn quotactl "const char *path" "int cmd" "int id" "void *addr"
50 call enables, disables and
51 manipulates filesystem quotas.
52 A quota control command
55 operates on the given filename
59 (NOTE: One should use the QCMD macro defined in
61 to formulate the value for
63 The address of an optional command specific data structure,
65 may be given; its interpretation
66 is discussed below with each command.
68 Currently quotas are supported only for the
73 a command is composed of a primary command (see below)
74 and a command type used to interpret the
76 Types are supported for interpretation of user identifiers (USRQUOTA)
77 and group identifiers (GRPQUOTA).
80 specific commands are:
81 .Bl -tag -width Q_QUOTAOFFxx
83 Enable disk quotas for the filesystem specified by
85 The command type specifies the type of the quotas being enabled.
88 argument specifies a file from which to take the quotas.
89 The quota file must exist;
90 it is normally created with the
96 Only the super-user may turn quotas on.
98 Disable disk quotas for the filesystem specified by
100 The command type specifies the type of the quotas being disabled.
105 arguments are unused.
106 Only the super-user may turn quotas off.
108 Get disk quota limits and current usage for the user or group
109 (as determined by the command type) with identifier
114 structure (defined in
115 .In ufs/ufs/quota.h ) .
117 Set disk quota limits for the user or group
118 (as determined by the command type) with identifier
123 structure (defined in
124 .In ufs/ufs/quota.h ) .
125 The usage fields of the
127 structure are ignored.
128 This call is restricted to the super-user.
130 Set disk usage limits for the user or group
131 (as determined by the command type) with identifier
136 structure (defined in
137 .In ufs/ufs/quota.h ) .
138 Only the usage fields are used.
139 This call is restricted to the super-user.
141 Update the on-disk copy of quota usages.
142 The command type specifies which type of quotas are to be updated.
147 parameters are ignored.
157 The kernel has not been compiled with the
161 The quota table cannot be expanded.
164 or the command type is invalid.
169 quotas are not currently enabled for this filesystem.
173 the quota file is not a plain file.
175 Search permission is denied for a component of a path prefix.
177 A component of a path prefix was not a directory.
178 .It Bq Er ENAMETOOLONG
179 A component of either pathname exceeded 255 characters,
180 or the entire length of either path name exceeded 1023 characters.
182 A filename does not exist.
184 Too many symbolic links were encountered in translating a pathname.
188 the quota file resides on a read-only filesystem.
192 error occurred while reading from or writing
193 to a file containing quotas.
197 was supplied; the associated structure could not be copied in or out
201 points outside the process's allocated address space.
203 The call was privileged and the caller was not the super-user.
215 function call appeared in
218 There should be some way to integrate this call with the resource
219 limit interface provided by