| chmod.2 (8269e7673cf033aba67dab8264fe719920c70f87) | chmod.2 (bfd03046d18776ea70785ca1ef36dfc60822de3b) |
|---|---|
| 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 11 unchanged lines hidden (view full) --- 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" | 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 11 unchanged lines hidden (view full) --- 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" |
| 28.Dd March 30, 2021 | 28.Dd October 31, 2024 |
| 29.Dt CHMOD 2 30.Os 31.Sh NAME 32.Nm chmod , 33.Nm fchmod , 34.Nm lchmod , 35.Nm fchmodat 36.Nd change mode of file --- 172 unchanged lines hidden (view full) --- 209.Pp 210Writing or changing the owner of a file 211turns off the set-user-id and set-group-id bits 212unless the user is the super-user. 213This makes the system somewhat more secure 214by protecting set-user-id (set-group-id) files 215from remaining set-user-id (set-group-id) if they are modified, 216at the expense of a degree of compatibility. | 29.Dt CHMOD 2 30.Os 31.Sh NAME 32.Nm chmod , 33.Nm fchmod , 34.Nm lchmod , 35.Nm fchmodat 36.Nd change mode of file --- 172 unchanged lines hidden (view full) --- 209.Pp 210Writing or changing the owner of a file 211turns off the set-user-id and set-group-id bits 212unless the user is the super-user. 213This makes the system somewhat more secure 214by protecting set-user-id (set-group-id) files 215from remaining set-user-id (set-group-id) if they are modified, 216at the expense of a degree of compatibility. |
| 217.Pp 218While it is normally an error to invoke 219.Fn fchmod 220on a socket, it is possible to do so on 221.Dv AF_LOCAL 222sockets before they are bound to a file name; see 223.Xr unix 4 . |
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| 217.Sh RETURN VALUES 218.Rv -std 219.Sh ERRORS 220The 221.Fn chmod 222system call 223will fail and the file mode will be unchanged if: 224.Bl -tag -width Er --- 133 unchanged lines hidden --- | 224.Sh RETURN VALUES 225.Rv -std 226.Sh ERRORS 227The 228.Fn chmod 229system call 230will fail and the file mode will be unchanged if: 231.Bl -tag -width Er --- 133 unchanged lines hidden --- |