/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ /* Missing glibc definitions to access certain kernel APIs */ #include <sys/resource.h> #include <sys/syscall.h> #include <fcntl.h> #include <stdlib.h> #include <unistd.h> #include <errno.h> #include <linux/oom.h> #include <linux/input.h> #include <linux/if_link.h> #include <linux/loop.h> #include <linux/audit.h> #include <linux/capability.h> #ifdef HAVE_AUDIT #include <libaudit.h> #endif #ifdef ARCH_MIPS #include <asm/sgidefs.h> #endif #ifdef HAVE_LINUX_BTRFS_H #include <linux/btrfs.h> #endif #include "macro.h" #ifndef RLIMIT_RTTIME #define RLIMIT_RTTIME 15 #endif /* If RLIMIT_RTTIME is not defined, then we cannot use RLIMIT_NLIMITS as is */ #define _RLIMIT_MAX (RLIMIT_RTTIME+1 > RLIMIT_NLIMITS ? RLIMIT_RTTIME+1 : RLIMIT_NLIMITS) #ifndef F_LINUX_SPECIFIC_BASE #define F_LINUX_SPECIFIC_BASE 1024 #endif #ifndef F_SETPIPE_SZ #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) #endif #ifndef F_GETPIPE_SZ #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) #endif #ifndef F_ADD_SEALS #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ #define F_SEAL_GROW 0x0004 /* prevent file from growing */ #define F_SEAL_WRITE 0x0008 /* prevent writes */ #endif #ifndef F_OFD_GETLK #define F_OFD_GETLK 36 #define F_OFD_SETLK 37 #define F_OFD_SETLKW 38 #endif #ifndef MFD_ALLOW_SEALING #define MFD_ALLOW_SEALING 0x0002U #endif #ifndef MFD_CLOEXEC #define MFD_CLOEXEC 0x0001U #endif #ifndef IP_FREEBIND #define IP_FREEBIND 15 #endif #ifndef OOM_SCORE_ADJ_MIN #define OOM_SCORE_ADJ_MIN (-1000) #endif #ifndef OOM_SCORE_ADJ_MAX #define OOM_SCORE_ADJ_MAX 1000 #endif #ifndef AUDIT_SERVICE_START #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */ #endif #ifndef AUDIT_SERVICE_STOP #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */ #endif #ifndef TIOCVHANGUP #define TIOCVHANGUP 0x5437 #endif #ifndef IP_TRANSPARENT #define IP_TRANSPARENT 19 #endif #ifndef SOL_NETLINK #define SOL_NETLINK 270 #endif #if !HAVE_DECL_PIVOT_ROOT static inline int pivot_root(const char *new_root, const char *put_old) { return syscall(SYS_pivot_root, new_root, put_old); } #endif #ifndef __NR_memfd_create # if defined __x86_64__ # define __NR_memfd_create 319 # elif defined __arm__ # define __NR_memfd_create 385 # elif defined __aarch64__ # define __NR_memfd_create 279 # elif defined _MIPS_SIM # if _MIPS_SIM == _MIPS_SIM_ABI32 # define __NR_memfd_create 4354 # endif # if _MIPS_SIM == _MIPS_SIM_NABI32 # define __NR_memfd_create 6318 # endif # if _MIPS_SIM == _MIPS_SIM_ABI64 # define __NR_memfd_create 5314 # endif # elif defined __i386__ # define __NR_memfd_create 356 # else # warning "__NR_memfd_create unknown for your architecture" # define __NR_memfd_create 0xffffffff # endif #endif #ifndef HAVE_MEMFD_CREATE static inline int memfd_create(const char *name, unsigned int flags) { return syscall(__NR_memfd_create, name, flags); } #endif #ifndef __NR_getrandom # if defined __x86_64__ # define __NR_getrandom 318 # elif defined(__i386__) # define __NR_getrandom 355 # elif defined(__arm__) # define __NR_getrandom 384 # elif defined(__aarch64__) # define __NR_getrandom 278 # elif defined(__ia64__) # define __NR_getrandom 1339 # elif defined(__m68k__) # define __NR_getrandom 352 # elif defined(__s390x__) # define __NR_getrandom 349 # else # warning "__NR_getrandom unknown for your architecture" # define __NR_getrandom 0xffffffff # endif #endif #if !HAVE_DECL_GETRANDOM static inline int getrandom(void *buffer, size_t count, unsigned flags) { return syscall(__NR_getrandom, buffer, count, flags); } #endif #ifndef GRND_NONBLOCK #define GRND_NONBLOCK 0x0001 #endif #ifndef GRND_RANDOM #define GRND_RANDOM 0x0002 #endif #ifndef BTRFS_IOCTL_MAGIC #define BTRFS_IOCTL_MAGIC 0x94 #endif #ifndef BTRFS_PATH_NAME_MAX #define BTRFS_PATH_NAME_MAX 4087 #endif #ifndef BTRFS_DEVICE_PATH_NAME_MAX #define BTRFS_DEVICE_PATH_NAME_MAX 1024 #endif #ifndef BTRFS_FSID_SIZE #define BTRFS_FSID_SIZE 16 #endif #ifndef BTRFS_UUID_SIZE #define BTRFS_UUID_SIZE 16 #endif #ifndef HAVE_LINUX_BTRFS_H struct btrfs_ioctl_vol_args { int64_t fd; char name[BTRFS_PATH_NAME_MAX + 1]; }; struct btrfs_ioctl_dev_info_args { uint64_t devid; /* in/out */ uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */ uint64_t bytes_used; /* out */ uint64_t total_bytes; /* out */ uint64_t unused[379]; /* pad to 4k */ char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ }; struct btrfs_ioctl_fs_info_args { uint64_t max_id; /* out */ uint64_t num_devices; /* out */ uint8_t fsid[BTRFS_FSID_SIZE]; /* out */ uint64_t reserved[124]; /* pad to 1k */ }; #endif #ifndef BTRFS_IOC_DEFRAG #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ struct btrfs_ioctl_vol_args) #endif #ifndef BTRFS_IOC_DEV_INFO #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ struct btrfs_ioctl_dev_info_args) #endif #ifndef BTRFS_IOC_FS_INFO #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ struct btrfs_ioctl_fs_info_args) #endif #ifndef BTRFS_IOC_DEVICES_READY #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ struct btrfs_ioctl_vol_args) #endif #ifndef BTRFS_FIRST_FREE_OBJECTID #define BTRFS_FIRST_FREE_OBJECTID 256 #endif #ifndef BTRFS_ROOT_TREE_OBJECTID #define BTRFS_ROOT_TREE_OBJECTID 1 #endif #ifndef BTRFS_QUOTA_TREE_OBJECTID #define BTRFS_QUOTA_TREE_OBJECTID 8ULL #endif #ifndef BTRFS_ROOT_ITEM_KEY #define BTRFS_ROOT_ITEM_KEY 132 #endif #ifndef BTRFS_QGROUP_STATUS_KEY #define BTRFS_QGROUP_STATUS_KEY 240 #endif #ifndef BTRFS_QGROUP_INFO_KEY #define BTRFS_QGROUP_INFO_KEY 242 #endif #ifndef BTRFS_QGROUP_LIMIT_KEY #define BTRFS_QGROUP_LIMIT_KEY 244 #endif #ifndef BTRFS_SUPER_MAGIC #define BTRFS_SUPER_MAGIC 0x9123683E #endif #ifndef MS_MOVE #define MS_MOVE 8192 #endif #ifndef MS_PRIVATE #define MS_PRIVATE (1 << 18) #endif #if !HAVE_DECL_GETTID static inline pid_t gettid(void) { return (pid_t) syscall(SYS_gettid); } #endif #ifndef SCM_SECURITY #define SCM_SECURITY 0x03 #endif #ifndef MS_STRICTATIME #define MS_STRICTATIME (1<<24) #endif #ifndef MS_REC #define MS_REC 16384 #endif #ifndef MS_SHARED #define MS_SHARED (1<<20) #endif #ifndef PR_SET_NO_NEW_PRIVS #define PR_SET_NO_NEW_PRIVS 38 #endif #ifndef PR_SET_CHILD_SUBREAPER #define PR_SET_CHILD_SUBREAPER 36 #endif #ifndef MAX_HANDLE_SZ #define MAX_HANDLE_SZ 128 #endif #ifndef __NR_name_to_handle_at # if defined(__x86_64__) # define __NR_name_to_handle_at 303 # elif defined(__i386__) # define __NR_name_to_handle_at 341 # elif defined(__arm__) # define __NR_name_to_handle_at 370 # elif defined(__powerpc__) # define __NR_name_to_handle_at 345 # else # error "__NR_name_to_handle_at is not defined" # endif #endif #if !HAVE_DECL_NAME_TO_HANDLE_AT struct file_handle { unsigned int handle_bytes; int handle_type; unsigned char f_handle[0]; }; static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) { return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags); } #endif #ifndef HAVE_SECURE_GETENV # ifdef HAVE___SECURE_GETENV # define secure_getenv __secure_getenv # else # error "neither secure_getenv nor __secure_getenv are available" # endif #endif #ifndef CIFS_MAGIC_NUMBER # define CIFS_MAGIC_NUMBER 0xFF534D42 #endif #ifndef TFD_TIMER_CANCEL_ON_SET # define TFD_TIMER_CANCEL_ON_SET (1 << 1) #endif #ifndef SO_REUSEPORT # define SO_REUSEPORT 15 #endif #ifndef EVIOCREVOKE # define EVIOCREVOKE _IOW('E', 0x91, int) #endif #ifndef DRM_IOCTL_SET_MASTER # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e) #endif #ifndef DRM_IOCTL_DROP_MASTER # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f) #endif #if defined(__i386__) || defined(__x86_64__) /* The precise definition of __O_TMPFILE is arch specific, so let's * just define this on x86 where we know the value. */ #ifndef __O_TMPFILE #define __O_TMPFILE 020000000 #endif /* a horrid kludge trying to make sure that this will fail on old kernels */ #ifndef O_TMPFILE #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY) #endif #endif #ifndef __NR_setns # if defined(__x86_64__) # define __NR_setns 308 # elif defined(__i386__) # define __NR_setns 346 # else # error "__NR_setns is not defined" # endif #endif #if !HAVE_DECL_SETNS static inline int setns(int fd, int nstype) { return syscall(__NR_setns, fd, nstype); } #endif #if !HAVE_DECL_LO_FLAGS_PARTSCAN #define LO_FLAGS_PARTSCAN 8 #endif #ifndef LOOP_CTL_REMOVE #define LOOP_CTL_REMOVE 0x4C81 #endif #ifndef LOOP_CTL_GET_FREE #define LOOP_CTL_GET_FREE 0x4C82 #endif #if !HAVE_DECL_IFLA_MACVLAN_FLAGS #define IFLA_MACVLAN_UNSPEC 0 #define IFLA_MACVLAN_MODE 1 #define IFLA_MACVLAN_FLAGS 2 #define __IFLA_MACVLAN_MAX 3 #define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1) #endif #if !HAVE_DECL_IFLA_IPVLAN_MODE #define IFLA_IPVLAN_UNSPEC 0 #define IFLA_IPVLAN_MODE 1 #define __IFLA_IPVLAN_MAX 2 #define IFLA_IPVLAN_MAX (__IFLA_IPVLAN_MAX - 1) #define IPVLAN_MODE_L2 0 #define IPVLAN_MODE_L3 1 #define IPVLAN_MAX 2 #endif #if !HAVE_DECL_IFLA_VTI_REMOTE #define IFLA_VTI_UNSPEC 0 #define IFLA_VTI_LINK 1 #define IFLA_VTI_IKEY 2 #define IFLA_VTI_OKEY 3 #define IFLA_VTI_LOCAL 4 #define IFLA_VTI_REMOTE 5 #define __IFLA_VTI_MAX 6 #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1) #endif #if !HAVE_DECL_IFLA_PHYS_PORT_ID #undef IFLA_PROMISCUITY #define IFLA_PROMISCUITY 30 #define IFLA_NUM_TX_QUEUES 31 #define IFLA_NUM_RX_QUEUES 32 #define IFLA_CARRIER 33 #define IFLA_PHYS_PORT_ID 34 #define __IFLA_MAX 35 #define IFLA_MAX (__IFLA_MAX - 1) #endif #if !HAVE_DECL_IFLA_BOND_AD_INFO #define IFLA_BOND_UNSPEC 0 #define IFLA_BOND_MODE 1 #define IFLA_BOND_ACTIVE_SLAVE 2 #define IFLA_BOND_MIIMON 3 #define IFLA_BOND_UPDELAY 4 #define IFLA_BOND_DOWNDELAY 5 #define IFLA_BOND_USE_CARRIER 6 #define IFLA_BOND_ARP_INTERVAL 7 #define IFLA_BOND_ARP_IP_TARGET 8 #define IFLA_BOND_ARP_VALIDATE 9 #define IFLA_BOND_ARP_ALL_TARGETS 10 #define IFLA_BOND_PRIMARY 11 #define IFLA_BOND_PRIMARY_RESELECT 12 #define IFLA_BOND_FAIL_OVER_MAC 13 #define IFLA_BOND_XMIT_HASH_POLICY 14 #define IFLA_BOND_RESEND_IGMP 15 #define IFLA_BOND_NUM_PEER_NOTIF 16 #define IFLA_BOND_ALL_SLAVES_ACTIVE 17 #define IFLA_BOND_MIN_LINKS 18 #define IFLA_BOND_LP_INTERVAL 19 #define IFLA_BOND_PACKETS_PER_SLAVE 20 #define IFLA_BOND_AD_LACP_RATE 21 #define IFLA_BOND_AD_SELECT 22 #define IFLA_BOND_AD_INFO 23 #define __IFLA_BOND_MAX 24 #define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1) #endif #if !HAVE_DECL_IFLA_VLAN_PROTOCOL #define IFLA_VLAN_UNSPEC 0 #define IFLA_VLAN_ID 1 #define IFLA_VLAN_FLAGS 2 #define IFLA_VLAN_EGRESS_QOS 3 #define IFLA_VLAN_INGRESS_QOS 4 #define IFLA_VLAN_PROTOCOL 5 #define __IFLA_VLAN_MAX 6 #define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1) #endif #if !HAVE_DECL_IFLA_VXLAN_LOCAL6 #define IFLA_VXLAN_UNSPEC 0 #define IFLA_VXLAN_ID 1 #define IFLA_VXLAN_GROUP 2 #define IFLA_VXLAN_LINK 3 #define IFLA_VXLAN_LOCAL 4 #define IFLA_VXLAN_TTL 5 #define IFLA_VXLAN_TOS 6 #define IFLA_VXLAN_LEARNING 7 #define IFLA_VXLAN_AGEING 8 #define IFLA_VXLAN_LIMIT 9 #define IFLA_VXLAN_PORT_RANGE 10 #define IFLA_VXLAN_PROXY 11 #define IFLA_VXLAN_RSC 12 #define IFLA_VXLAN_L2MISS 13 #define IFLA_VXLAN_L3MISS 14 #define IFLA_VXLAN_PORT 15 #define IFLA_VXLAN_GROUP6 16 #define IFLA_VXLAN_LOCAL6 17 #define __IFLA_VXLAN_MAX 18 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1) #endif #if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN #define IFLA_IPTUN_UNSPEC 0 #define IFLA_IPTUN_LINK 1 #define IFLA_IPTUN_LOCAL 2 #define IFLA_IPTUN_REMOTE 3 #define IFLA_IPTUN_TTL 4 #define IFLA_IPTUN_TOS 5 #define IFLA_IPTUN_ENCAP_LIMIT 6 #define IFLA_IPTUN_FLOWINFO 7 #define IFLA_IPTUN_FLAGS 8 #define IFLA_IPTUN_PROTO 9 #define IFLA_IPTUN_PMTUDISC 10 #define IFLA_IPTUN_6RD_PREFIX 11 #define IFLA_IPTUN_6RD_RELAY_PREFIX 12 #define IFLA_IPTUN_6RD_PREFIXLEN 13 #define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14 #define __IFLA_IPTUN_MAX 15 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1) #endif #if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO #define IFLA_BRIDGE_FLAGS 0 #define IFLA_BRIDGE_MODE 1 #define IFLA_BRIDGE_VLAN_INFO 2 #define __IFLA_BRIDGE_MAX 3 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1) #endif #if !HAVE_DECL_IFLA_BRPORT_UNICAST_FLOOD #define IFLA_BRPORT_UNSPEC 0 #define IFLA_BRPORT_STATE 1 #define IFLA_BRPORT_PRIORITY 2 #define IFLA_BRPORT_COST 3 #define IFLA_BRPORT_MODE 4 #define IFLA_BRPORT_GUARD 5 #define IFLA_BRPORT_PROTECT 6 #define IFLA_BRPORT_FAST_LEAVE 7 #define IFLA_BRPORT_LEARNING 8 #define IFLA_BRPORT_UNICAST_FLOOD 9 #define __IFLA_BRPORT_MAX 10 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1) #endif #ifndef IPV6_UNICAST_IF #define IPV6_UNICAST_IF 76 #endif #ifndef IFF_MULTI_QUEUE #define IFF_MULTI_QUEUE 0x100 #endif #ifndef IFF_LOWER_UP #define IFF_LOWER_UP 0x10000 #endif #ifndef IFF_DORMANT #define IFF_DORMANT 0x20000 #endif #ifndef BOND_XMIT_POLICY_ENCAP23 #define BOND_XMIT_POLICY_ENCAP23 3 #endif #ifndef BOND_XMIT_POLICY_ENCAP34 #define BOND_XMIT_POLICY_ENCAP34 4 #endif #ifndef NET_ADDR_RANDOM # define NET_ADDR_RANDOM 1 #endif #ifndef NET_NAME_UNKNOWN # define NET_NAME_UNKNOWN 0 #endif #ifndef NET_NAME_ENUM # define NET_NAME_ENUM 1 #endif #ifndef NET_NAME_PREDICTABLE # define NET_NAME_PREDICTABLE 2 #endif #ifndef NET_NAME_USER # define NET_NAME_USER 3 #endif #ifndef NET_NAME_RENAMED # define NET_NAME_RENAMED 4 #endif #ifndef BPF_XOR # define BPF_XOR 0xa0 #endif /* Note that LOOPBACK_IFINDEX is currently not exported by the * kernel/glibc, but hardcoded internally by the kernel. However, as * it is exported to userspace indirectly via rtnetlink and the * ioctls, and made use of widely we define it here too, in a way that * is compatible with the kernel's internal definition. */ #ifndef LOOPBACK_IFINDEX #define LOOPBACK_IFINDEX 1 #endif #ifndef MAX_AUDIT_MESSAGE_LENGTH #define MAX_AUDIT_MESSAGE_LENGTH 8970 #endif #ifndef AUDIT_NLGRP_MAX #define AUDIT_NLGRP_READLOG 1 #endif #ifndef CAP_MAC_OVERRIDE #define CAP_MAC_OVERRIDE 32 #endif #ifndef CAP_MAC_ADMIN #define CAP_MAC_ADMIN 33 #endif #ifndef CAP_SYSLOG #define CAP_SYSLOG 34 #endif #ifndef CAP_WAKE_ALARM #define CAP_WAKE_ALARM 35 #endif #ifndef CAP_BLOCK_SUSPEND #define CAP_BLOCK_SUSPEND 36 #endif #ifndef CAP_AUDIT_READ #define CAP_AUDIT_READ 37 #endif static inline int raw_clone(unsigned long flags, void *child_stack) { #if defined(__s390__) || defined(__CRIS__) /* On s390 and cris the order of the first and second arguments * of the raw clone() system call is reversed. */ return (int) syscall(__NR_clone, child_stack, flags); #else return (int) syscall(__NR_clone, flags, child_stack); #endif } static inline pid_t raw_getpid(void) { return (pid_t) syscall(__NR_getpid); } #if !HAVE_DECL_RENAMEAT2 #ifndef __NR_renameat2 # if defined __x86_64__ # define __NR_renameat2 316 # elif defined __arm__ # define __NR_renameat2 382 # elif defined _MIPS_SIM # if _MIPS_SIM == _MIPS_SIM_ABI32 # define __NR_renameat2 4351 # endif # if _MIPS_SIM == _MIPS_SIM_NABI32 # define __NR_renameat2 6315 # endif # if _MIPS_SIM == _MIPS_SIM_ABI64 # define __NR_renameat2 5311 # endif # elif defined __i386__ # define __NR_renameat2 353 # else # warning "__NR_renameat2 unknown for your architecture" # define __NR_renameat2 0xffffffff # endif #endif static inline int renameat2(int oldfd, const char *oldname, int newfd, const char *newname, unsigned flags) { return syscall(__NR_renameat2, oldfd, oldname, newfd, newname, flags); } #endif #ifndef RENAME_NOREPLACE #define RENAME_NOREPLACE (1 << 0) #endif #if !HAVE_DECL_KCMP static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) { return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2); } #endif #ifndef KCMP_FILE #define KCMP_FILE 0 #endif