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35 .\" @(#)quotactl.2 8.2 (Berkeley) 3/10/95
43 .Nd manipulate file system quotas
50 .Fn quotactl "const char *path" "int cmd" "int id" "void *addr"
54 system call enables, disables and
55 manipulates file system quotas.
56 A quota control command
59 operates on the given filename
63 (NOTE: One should use the QCMD macro defined in
65 to formulate the value for
67 The address of an optional command specific data structure,
69 may be given; its interpretation
70 is discussed below with each command.
72 Currently quotas are supported only for the
77 a command is composed of a primary command (see below)
78 and a command type used to interpret the
80 Types are supported for interpretation of user identifiers (USRQUOTA)
81 and group identifiers (GRPQUOTA).
84 specific commands are:
85 .Bl -tag -width Q_QUOTAOFFxx
87 Enable disk quotas for the file system specified by
89 The command type specifies the type of the quotas being enabled.
92 argument specifies a file from which to take the quotas.
93 The quota file must exist;
94 it is normally created with the
100 Only the super-user may turn quotas on.
102 Disable disk quotas for the file system specified by
104 The command type specifies the type of the quotas being disabled.
109 arguments are unused.
110 Only the super-user may turn quotas off.
112 Get disk quota limits and current usage for the user or group
113 (as determined by the command type) with identifier
120 structure (defined in
121 .In ufs/ufs/quota.h ) .
123 Set disk quota limits for the user or group
124 (as determined by the command type) with identifier
131 structure (defined in
132 .In ufs/ufs/quota.h ) .
133 The usage fields of the
135 structure are ignored.
136 This system call is restricted to the super-user.
138 Set disk usage limits for the user or group
139 (as determined by the command type) with identifier
146 structure (defined in
147 .In ufs/ufs/quota.h ) .
148 Only the usage fields are used.
149 This system call is restricted to the super-user.
151 Update the on-disk copy of quota usages.
152 The command type specifies which type of quotas are to be updated.
157 arguments are ignored.
164 system call will fail if:
167 The kernel has not been compiled with the
171 The quota table cannot be expanded.
176 or the command type is invalid.
181 quotas are not currently enabled for this file system.
185 the quota file is not a plain file.
187 Search permission is denied for a component of a path prefix.
189 A component of a path prefix was not a directory.
190 .It Bq Er ENAMETOOLONG
191 A component of either pathname exceeded 255 characters,
192 or the entire length of either path name exceeded 1023 characters.
194 A filename does not exist.
196 Too many symbolic links were encountered in translating a pathname.
200 the quota file resides on a read-only file system.
204 error occurred while reading from or writing
205 to a file containing quotas.
209 was supplied; the associated structure could not be copied in or out
215 points outside the process's allocated address space.
217 The call was privileged and the caller was not the super-user.
229 system call appeared in
232 There should be some way to integrate this call with the resource
233 limit interface provided by