...ject's size ( st_size ), permissions ( st_mode ), owner ( st_uid ), and group ( st_gid ). fchown (2) To change the ownership of a shared memory object. fchmod (2) To change the …...1-2008 fchdir (2) Added in POSIX.1-2008 TC1 fchmod (2) fchmodat (2) Added in POSIX.1-2008 fchown (2) fchownat (2) Added in POSIX.1-2008 fcntl (2) fdatasync (2) fexecve (3) Added…...dded in POSIX.1-2008] fchmod() [Added in POSIX.1-2008] fchmodat() [Added in POSIX.1-2008] fchown() [Added in POSIX.1-2008] fchownat() [Added in POSIX.1-2008] fclose() fcntl() (f…...e only to one of the groups it belongs to. This affects the following functions: chown () fchown () CS - _POSIX_CLOCK_SELECTION - _SC_CLOCK_SELECTION This option implies the _PO…..._nlink , st_uid , and st_gid . All files support the chmod (2)/ fchmod (2) and chown (2)/ fchown (2) operations, but will not be able to grant permissions that contradict the po…...descriptor that can be passed as the dirfd argument in system calls such as fstatat (2), fchownat (2), fchmodat (2), linkat (2), and readlinkat (2), in order to operate on the s…...binding an abstract socket, and changing the ownership and permissions of the object (via fchown (2) and fchmod (2)) has no effect on the accessibility of the socket. Abstract s…