util: make use of kcmp() to compare fds, if it is available

[elogind.git] / src / shared / missing.h

diff --git a/src/shared/missing.h b/src/shared/missing.h
index 00e02871d2f4e39ae6d880c3bfa8c758c1638f4a..cdc38b2dd8945850b9b316c29eabe9af0a176391 100644 (file)
--- a/src/shared/missing.h
+++ b/src/shared/missing.h
@@ -33,17 +33,23 @@
 #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
 
-#include "macro.h"
-
 #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
@@ -74,7 +80,11 @@
 #endif
 
 #ifndef MFD_ALLOW_SEALING
-#define MFD_ALLOW_SEALING 0x0002ULL
+#define MFD_ALLOW_SEALING 0x0002U
+#endif
+
+#ifndef MFD_CLOEXEC
+#define MFD_CLOEXEC 0x0001U
 #endif
 
 #ifndef IP_FREEBIND
@@ -121,10 +131,20 @@ static inline int pivot_root(const char *new_root, const char *put_old) {
 #  elif defined __arm__
 #    define __NR_memfd_create 385
 #  elif defined _MIPS_SIM
-#    warning "__NR_memfd_create not yet defined for MIPS"
-#    define __NR_memfd_create 0xffffffff
-#  else
+#    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
 
@@ -136,7 +156,17 @@ static inline int memfd_create(const char *name, unsigned int flags) {
 
 #ifndef __NR_getrandom
 #  if defined __x86_64__
-#    define __NR_getrandom 278
+#    define __NR_getrandom 318
+#  elif defined(__i386__)
+#    define __NR_getrandom 355
+#  elif defined(__arm__) || defined(__aarch64__)
+#    define __NR_getrandom 384
+#  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
@@ -149,6 +179,14 @@ static inline int getrandom(void *buffer, size_t count, unsigned 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
@@ -212,6 +250,34 @@ struct btrfs_ioctl_fs_info_args {
                                  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
@@ -489,6 +555,22 @@ static inline int setns(int fd, int nstype) {
 #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
@@ -517,6 +599,10 @@ static inline int setns(int fd, int nstype) {
 #  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
@@ -545,3 +631,93 @@ static inline int setns(int fd, int nstype) {
 #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