section 2const · System calls 📞

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E

EPIOCGPARAMS(2const)ioctl() operations for epoll file descriptors✨
EPIOCSPARAMS(2const)ioctl() operations for epoll file descriptors✨

F

F_ADD_SEALS(2const)get/add file seals✨
F_DUPFD(2const)duplicate a file descriptor✨
F_DUPFD_CLOEXEC(2const)duplicate a file descriptor✨
F_GET_FILE_RW_HINT(2const)get/set file read/write hints✨
F_GET_RW_HINT(2const)get/set file read/write hints✨
F_GET_SEALS(2const)get/add file seals✨
F_GETDELEG(2const)delegations✨
F_GETFD(2const)get/set file descriptor flags✨
F_GETFL(2const)get/set file status flags✨
F_GETLEASE(2const)leases✨
F_GETLK(2const)locking✨
F_GETOWN(2const)managing signals✨
F_GETOWN_EX(2const)managing signals✨
F_GETPIPE_SZ(2const)get/set the capacity of a pipe✨
F_GETSIG(2const)managing signals✨
F_NOTIFY(2const)file and directory change notification✨
F_OFD_GETLK(2const)locking✨
F_OFD_SETLK(2const)locking✨
F_OFD_SETLKW(2const)locking✨
F_SET_FILE_RW_HINT(2const)get/set file read/write hints✨
F_SET_RW_HINT(2const)get/set file read/write hints✨
F_SETDELEG(2const)delegations✨
F_SETFD(2const)get/set file descriptor flags✨
F_SETFL(2const)get/set file status flags✨
F_SETLEASE(2const)leases✨
F_SETLK(2const)locking✨
F_SETLKW(2const)locking✨
F_SETOWN(2const)managing signals✨
F_SETOWN_EX(2const)managing signals✨
F_SETPIPE_SZ(2const)get/set the capacity of a pipe✨
F_SETSIG(2const)managing signals✨
FAT_IOCTL_GET_ATTRIBUTES(2const)get and set file attributes in a FAT filesystem✨
FAT_IOCTL_GET_VOLUME_ID(2const)read the volume ID in a FAT filesystem✨
FAT_IOCTL_SET_ATTRIBUTES(2const)get and set file attributes in a FAT filesystem✨
FICLONE(2const)share some the data of one file with another file✨
FICLONERANGE(2const)share some the data of one file with another file✨
FIDEDUPERANGE(2const)share some the data of one file with another file✨
FIONREAD(2const)buffer count and flushing✨
FS_IOC_GETFLAGS(2const)ioctl() operations for inode flags✨
FS_IOC_GETFSLABEL(2const)get or set a filesystem label✨
FS_IOC_GETFSMAP(2const)retrieve the physical layout of the filesystem✨
FS_IOC_SETFLAGS(2const)ioctl() operations for inode flags✨
FS_IOC_SETFSLABEL(2const)get or set a filesystem label✨
FUTEX_CMP_REQUEUE(2const)compare a futex, wake some waiters, and requeue others✨
FUTEX_CMP_REQUEUE_PI(2const)compare a priority-inheritance futex, wake a waiter, and requeue others✨
FUTEX_FD(2const)create a file descriptor associated with a futex✨
FUTEX_LOCK_PI(2const)lock a priority-inheritance futex✨
FUTEX_LOCK_PI2(2const)lock a priority‐inheritance futex✨
FUTEX_REQUEUE(2const)wake some waiters, and requeue others✨
FUTEX_TRYLOCK_PI(2const)try to lock a priority-inheritance futex✨
FUTEX_UNLOCK_PI(2const)unlock a priority‐inheritance futex✨
FUTEX_WAIT(2const)sleep waiting for a FUTEX_WAKE operation✨
FUTEX_WAIT_BITSET(2const)selective futex waiting and waking✨
FUTEX_WAIT_REQUEUE_PI(2const)wait on a non-PI futex, and potentially be requeued onto a PI futex✨
FUTEX_WAKE(2const)wake waiters that are inside FUTEX_WAIT✨
FUTEX_WAKE_BITSET(2const)selective futex waiting and waking✨
FUTEX_WAKE_OP(2const)fast user-space locking✨

G

GIO_CMAP(2const)ioctls for console terminal and virtual consoles✨
GIO_FONT(2const)ioctls for console terminal and virtual consoles✨
GIO_FONTX(2const)ioctls for console terminal and virtual consoles✨
GIO_SCRNMAP(2const)ioctls for console terminal and virtual consoles✨
GIO_UNIMAP(2const)ioctls for console terminal and virtual consoles✨
GIO_UNISCRNMAP(2const)ioctls for console terminal and virtual consoles✨

I

IP_ADD_MEMBERSHIP(2const)join a multicast group✨
IP_ADD_SOURCE_MEMBERSHIP(2const)join a multicast group and allow receiving data only from a specified source✨
IP_BIND_ADDRESS_NO_PORT(2const)don't reserve an ephemeral port✨
IP_BLOCK_SOURCE(2const)stop receiving multicast data from a specific source in a given group✨
IP_DROP_MEMBERSHIP(2const)leave a multicast group✨
IP_DROP_SOURCE_MEMBERSHIP(2const)leave a source-specific multicast group✨
IP_FREEBIND(2const)bind to a nonlocal or nonexistent IP address✨
IP_HDRINCL(2const)include a user-supplied IP header✨
IP_LOCAL_PORT_RANGE(2const)default local port range✨
IP_MSFILTER(2const)multicast source filtering✨
IP_MTU(2const)path maximum transmission unit size✨
IP_MTU_DISCOVER(2const)path maximum transfer unit size discovery✨
IP_MULTICAST_ALL(2const)delivery policy of multicast messages✨
IP_MULTICAST_IF(2const)local device for a multicast socket✨
IP_MULTICAST_LOOP(2const)loop back sent multicast packets to local sockets✨
IP_MULTICAST_TTL(2const)time-to-live value of outgoing multicast packets✨
IP_NODEFRAG(2const)don't defragmentate outgoing packets✨
IP_OPTIONS(2const)options to be sent with every packet✨
IP_PASSSEC(2const)receive the security context of the peer socket✨
IP_PKTINFO(2const)information about the incoming packet✨
IP_RECVERR(2const)extended reliable error message passing✨
IP_RECVOPTS(2const)receive all incoming IP options in control message✨
IP_RECVORIGDSTADDR(2const)receive IP_ORIGDSTADDR control message✨
IP_RECVTOS(2const)receive IP_TOS control message✨
IP_RECVTTL(2const)enable IP_TTL control message✨
IP_RETOPTS(2const)receive most incoming IP options in control message✨
IP_ROUTER_ALERT(2const)pass all to-be forwarded packets✨
IP_TOS(2const)type of service✨
IP_TRANSPARENT(2const)transparent proxying✨
IP_TTL(2const)time to live✨
IP_UNBLOCK_SOURCE(2const)unblock multicast source✨
IPPROTO_IP(2const)Linux IPv4 protocol socket options✨
IPPROTO_IPV6(2const)Linux IPv6 protocol socket options✨
IPV6_ADD_MEMBERSHIP(2const)join or leave a multicast group✨
IPV6_ADDRFORM(2const)turn an AF_INET6 socket into a socket of a different address family✨
IPV6_AUTHHDR(2const)set the delivery of control messages for incoming datagrams containing extension headers✨
IPV6_DROP_MEMBERSHIP(2const)join or leave a multicast group✨
IPV6_DSTOPTS(2const)set the delivery of control messages for incoming datagrams containing extension headers✨
IPV6_FLOWINFO(2const)set the delivery of control messages for incoming datagrams containing extension headers✨
IPV6_HOPLIMIT(2const)set the delivery of control messages for incoming datagrams containing extension headers✨
IPV6_HOPOPTS(2const)set the delivery of control messages for incoming datagrams containing extension headers✨
IPV6_MTU(2const)path maximum transmission unit size✨
IPV6_MTU_DISCOVER(2const)path maximum transfer unit size discovery✨
IPV6_MULTICAST_HOPS(2const)multicast hop limit✨
IPV6_MULTICAST_IF(2const)local device for a multicast socket✨
IPV6_MULTICAST_LOOP(2const)loop back sent multicast packets to local sockets✨
IPV6_RECVERR(2const)extended reliable error message passing✨
IPV6_RECVPKTINFO(2const)set delivery of the IPV6_PKTINFO control message on incoming datagrams✨
IPV6_ROUTER_ALERT(2const)pass forwarded packets containing a router alert hop-by-hop to this socket✨
IPV6_RTHDR(2const)set the delivery of control messages for incoming datagrams containing extension headers✨
IPV6_UNICAST_HOPS(2const)unicast hop limit✨
IPV6_V6ONLY(2const)restrict to IPv6 only✨

K

KDADDIO(2const)ioctls for console terminal and virtual consoles✨
KDDELIO(2const)ioctls for console terminal and virtual consoles✨
KDDISABIO(2const)ioctls for console terminal and virtual consoles✨
KDENABIO(2const)ioctls for console terminal and virtual consoles✨
KDGETKEYCODE(2const)ioctls for console terminal and virtual consoles✨
KDGETLED(2const)ioctls for console terminal and virtual consoles✨
KDGETMODE(2const)ioctls for console terminal and virtual consoles✨
KDGKBDIACR(2const)ioctls for console terminal and virtual consoles✨
KDGKBENT(2const)ioctls for console terminal and virtual consoles✨
KDGKBLED(2const)ioctls for console terminal and virtual consoles✨
KDGKBMETA(2const)ioctls for console terminal and virtual consoles✨
KDGKBMODE(2const)ioctls for console terminal and virtual consoles✨
KDGKBSENT(2const)ioctls for console terminal and virtual consoles✨
KDGKBTYPE(2const)ioctls for console terminal and virtual consoles✨
KDMKTONE(2const)ioctls for console terminal and virtual consoles✨
KDSETKEYCODE(2const)ioctls for console terminal and virtual consoles✨
KDSETLED(2const)ioctls for console terminal and virtual consoles✨
KDSETMODE(2const)ioctls for console terminal and virtual consoles✨
KDSIGACCEPT(2const)ioctls for console terminal and virtual consoles✨
KDSKBENT(2const)ioctls for console terminal and virtual consoles✨
KDSKBLED(2const)ioctls for console terminal and virtual consoles✨
KDSKBMETA(2const)ioctls for console terminal and virtual consoles✨
KDSKBMODE(2const)ioctls for console terminal and virtual consoles✨
KDSKBSENT(2const)ioctls for console terminal and virtual consoles✨
KEYCTL_ASSUME_AUTHORITY(2const)assume the authority to instantiate a key✨
KEYCTL_CHOWN(2const)change the ownership of a key✨
KEYCTL_CLEAR(2const)clear a keyring✨
KEYCTL_DESCRIBE(2const)describe a key✨
KEYCTL_DH_COMPUTE(2const)compute a Diffie-Hellman shared secret or public key✨
KEYCTL_GET_KEYRING_ID(2const)map a special key ID to a real key ID for this process✨
KEYCTL_GET_PERSISTENT(2const)get the persistent keyring for a user✨
KEYCTL_GET_SECURITY(2const)manipulate the kernel's key management facility✨
KEYCTL_INSTANTIATE(2const)key instantiation functions✨
KEYCTL_INSTANTIATE_IOV(2const)key instantiation functions✨
KEYCTL_INVALIDATE(2const)invalidate a key✨
KEYCTL_JOIN_SESSION_KEYRING(2const)replace the session keyring this process subscribes to with a new one✨
KEYCTL_LINK(2const)link a key to a keyring✨
KEYCTL_NEGATE(2const)key instantiation functions✨
KEYCTL_READ(2const)read a key✨
KEYCTL_REJECT(2const)key instantiation functions✨
KEYCTL_RESTRICT_KEYRING(2const)restrict keys that may be linked to a keyring✨
KEYCTL_REVOKE(2const)revoke a key✨
KEYCTL_SEARCH(2const)search a keyring for a key✨
KEYCTL_SESSION_TO_PARENT(2const)set the parent process's session keyring✨
KEYCTL_SET_REQKEY_KEYRING(2const)set the implicit destination keyring✨
KEYCTL_SET_TIMEOUT(2const)set the expiration timer on a key✨
KEYCTL_SETPERM(2const)change the permissions mask on a key✨
KEYCTL_UNLINK(2const)unlink a key from a keyring✨
KEYCTL_UPDATE(2const)update a key's data payload✨
KIOCSOUND(2const)ioctls for console terminal and virtual consoles✨

N

NS_GET_NSTYPE(2const)discovering the namespace type✨
NS_GET_OWNER_UID(2const)discovering the owner of a user namespace✨
NS_GET_PARENT(2const)discovering namespace relationships✨
NS_GET_USERNS(2const)discovering namespace relationships✨

P

PAGEMAP_SCAN(2const)get and/or clear page flags✨
PIO_CMAP(2const)ioctls for console terminal and virtual consoles✨
PIO_FONT(2const)ioctls for console terminal and virtual consoles✨
PIO_FONTRESET(2const)ioctls for console terminal and virtual consoles✨
PIO_FONTX(2const)ioctls for console terminal and virtual consoles✨
PIO_SCRNMAP(2const)ioctls for console terminal and virtual consoles✨
PIO_UNIMAP(2const)ioctls for console terminal and virtual consoles✨
PIO_UNIMAPCLR(2const)ioctls for console terminal and virtual consoles✨
PIO_UNISCRNMAP(2const)ioctls for console terminal and virtual consoles✨
PR_CAP_AMBIENT(2const)read or change the ambient capability set of the calling thread✨
PR_CAP_AMBIENT_CLEAR_ALL(2const)clear the ambient capability set of the calling thread✨
PR_CAP_AMBIENT_IS_SET(2const)read the ambient capability set of the calling thread✨
PR_CAP_AMBIENT_LOWER(2const)lower the ambient capability set of the calling thread✨
PR_CAP_AMBIENT_RAISE(2const)add to the ambient capability set of the calling thread✨
PR_CAPBSET_DROP(2const)drop a capability from the calling thread's capability bounding set✨
PR_CAPBSET_READ(2const)read the calling thread's capability bounding set✨
PR_FUTEX_HASH(2const)configure the private futex hash✨
PR_FUTEX_HASH_GET_SLOTS(2const)return the size of the private hash✨
PR_FUTEX_HASH_SET_SLOTS(2const)set the size of the private hash✨
PR_GET_AUXV(2const)get the auxiliary vector✨
PR_GET_CHILD_SUBREAPER(2const)get the "child subreaper" attribute of the calling process✨
PR_GET_DUMPABLE(2const)get the "dumpable" attribute of the calling process✨
PR_GET_ENDIAN(2const)get the endianness of the calling process✨
PR_GET_FP_MODE(2const)get the floating point mode of the calling process✨
PR_GET_FPEMU(2const)get the floating-point emulation control bits✨
PR_GET_FPEXC(2const)get the floating-point exception mode✨
PR_GET_IO_FLUSHER(2const)get the IO_FLUSHER state✨
PR_GET_KEEPCAPS(2const)get the state of the "keep capabilities" flag✨
PR_GET_MDWE(2const)get the Memory-Deny-Write-Execute protection mask for the calling process✨