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head/share/man/man9/sysctl.9
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| .Fn SYSCTL_ADD_PROC | .Fn SYSCTL_ADD_PROC | ||||
| function. | function. | ||||
| .It Fa format | .It Fa format | ||||
| A pointer to a string | A pointer to a string | ||||
| which specifies the format of the OID in a symbolic way. | which specifies the format of the OID in a symbolic way. | ||||
| This format is used as a hint by | This format is used as a hint by | ||||
| .Xr sysctl 8 | .Xr sysctl 8 | ||||
| to apply proper data formatting for display purposes. | to apply proper data formatting for display purposes. | ||||
| Currently used format names are: | .Pp | ||||
| .Dq N | Current formats: | ||||
| for node, | .Bl -tag -width "S,TYPE" -compact -offset indent | ||||
| .Dq A | .It Cm N | ||||
| for | node | ||||
| .Li "char *" , | .It Cm A | ||||
| .Dq I | .Li "char *" | ||||
| for | .It Cm I | ||||
| .Li "int" , | .Li "int" | ||||
| .Dq IU | .It Cm IK Ns Op Ar n | ||||
| for | temperature in Kelvin, multiplied by an optional single digit | ||||
| .Li "unsigned int" , | power of ten scaling factor: 1 (default) gives deciKelvin, 0 gives Kelvin, 3 | ||||
| .Dq L | gives milliKelvin | ||||
| for | .It Cm IU | ||||
| .Li "long" , | .Li "unsigned int" | ||||
| .Dq LU | .It Cm L | ||||
| for | .Li "long" | ||||
| .Li "unsigned long" , | .It Cm LU | ||||
| .Dq Q | .Li "unsigned long" | ||||
| for | .It Cm Q | ||||
| .Li "quad_t" , | .Li "quad_t" | ||||
| .Dq QU | .It Cm QU | ||||
| for | |||||
| .Li "u_quad_t" | .Li "u_quad_t" | ||||
| and | .It Cm "S,TYPE" | ||||
| .Dq S,TYPE | |||||
| for | |||||
| .Li "struct TYPE" | .Li "struct TYPE" | ||||
| structures. | structures | ||||
| .El | |||||
| .It Fa descr | .It Fa descr | ||||
| A pointer to a textual description of the OID. | A pointer to a textual description of the OID. | ||||
| .El | .El | ||||
| .Sh CREATING ROOT NODES | .Sh CREATING ROOT NODES | ||||
| Sysctl MIBs or OIDs are created in a hierarchical tree. | Sysctl MIBs or OIDs are created in a hierarchical tree. | ||||
| The nodes at the bottom of the tree are called root nodes, and have no | The nodes at the bottom of the tree are called root nodes, and have no | ||||
| parent OID. | parent OID. | ||||
| To create bottom tree nodes the | To create bottom tree nodes the | ||||
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