ioctl() operations for Linux namespaces NAME ioctl_nsfs - ioctl() operations for Linux namespaces SYNOPSIS #include <linux/nsfs.h......); DESCRIPTION The setns () system call allows the calling thread to move into different namespaces. The fd argument is one of the following: • a file descriptor referring to on…...of CLONE_NEWNS requires the CAP_SYS_ADMIN capability. For further information, see mount_namespaces (7). CLONE_NEWPID (since Linux 3.8) This flag has the same effect as the clon…...al handlers. These system calls also allow the new child process to be placed in separate namespaces (7). Note that in this manual page, "calling process" normally corresponds t…...al handlers. These system calls also allow the new child process to be placed in separate namespaces (7). Note that in this manual page, "calling process" normally corresponds t…...al handlers. These system calls also allow the new child process to be placed in separate namespaces (7). Note that in this manual page, "calling process" normally corresponds t…...the CAP_SYS_ADMIN capability in the user namespace associated with its UTS namespace (see namespaces (7)). getdomainname () can fail with the following errors: EINVAL For getdom…...the CAP_SYS_ADMIN capability in the user namespace associated with its UTS namespace (see namespaces (7)). getdomainname () can fail with the following errors: EINVAL For getdom…...pagation types (including the default propagation type assigned to new mounts), see mount_namespaces (7). Moving a mount If mountflags contains the flag MS_MOVE (available since…......") to be either warm or cold, and either hard or through the BIOS. Behavior inside PID namespaces Since Linux 3.4, if reboot () is called from a PID namespace other than the …...ing a cached value. NOTES If the caller's parent is in a different PID namespace (see pid_namespaces (7)), getppid () returns 0. From a kernel perspective, the PID (which is sha…...ing a cached value. NOTES If the caller's parent is in a different PID namespace (see pid_namespaces (7)), getppid () returns 0. From a kernel perspective, the PID (which is sha…...the CAP_SYS_ADMIN capability in the user namespace associated with its UTS namespace (see namespaces (7)). VERSIONS SUSv2 guarantees that "Host names are limited to 255 bytes". …...the CAP_SYS_ADMIN capability in the user namespace associated with its UTS namespace (see namespaces (7)). VERSIONS SUSv2 guarantees that "Host names are limited to 255 bytes". …...ser address space. EINVAL target is not a mount point. EINVAL target is locked; see mount_namespaces (7). EINVAL umount2 () was called with MNT_EXPIRE and either MNT_DETACH or M…...ser address space. EINVAL target is not a mount point. EINVAL target is locked; see mount_namespaces (7). EINVAL umount2 () was called with MNT_EXPIRE and either MNT_DETACH or M…...l-terminated string. The name includes a namespace prefix; there may be several, disjoint namespaces associated with an individual inode. RETURN VALUE On success, zero is return…...l-terminated string. The name includes a namespace prefix; there may be several, disjoint namespaces associated with an individual inode. RETURN VALUE On success, zero is return…...l-terminated string. The name includes a namespace prefix; there may be several, disjoint namespaces associated with an individual inode. RETURN VALUE On success, zero is return…...nts into unbindable mounts. For further details on the above propagation types, see mount_namespaces (7). RETURN VALUE On success, mount_setattr () returns zero. On error, -1 is…