1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2010 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 /* Missing glibc definitions to access certain kernel APIs */
26 #include <sys/resource.h>
27 #include <sys/syscall.h>
32 #include <linux/oom.h>
33 #include <linux/input.h>
34 #include <linux/if_link.h>
43 #include <asm/sgidefs.h>
47 #define RLIMIT_RTTIME 15
50 /* If RLIMIT_RTTIME is not defined, then we cannot use RLIMIT_NLIMITS as is */
51 #define _RLIMIT_MAX (RLIMIT_RTTIME+1 > RLIMIT_NLIMITS ? RLIMIT_RTTIME+1 : RLIMIT_NLIMITS)
53 #ifndef F_LINUX_SPECIFIC_BASE
54 #define F_LINUX_SPECIFIC_BASE 1024
58 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
62 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
66 #define IP_FREEBIND 15
69 #ifndef OOM_SCORE_ADJ_MIN
70 #define OOM_SCORE_ADJ_MIN (-1000)
73 #ifndef OOM_SCORE_ADJ_MAX
74 #define OOM_SCORE_ADJ_MAX 1000
77 #ifndef AUDIT_SERVICE_START
78 #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */
81 #ifndef AUDIT_SERVICE_STOP
82 #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */
86 #define TIOCVHANGUP 0x5437
89 #ifndef IP_TRANSPARENT
90 #define IP_TRANSPARENT 19
94 #define IFLA_CARRIER 33
95 #ifndef IFLA_NUM_RX_QUEUES
96 #define IFLA_NUM_RX_QUEUES 32
97 #ifndef IFLA_NUM_TX_QUEUES
98 #define IFLA_NUM_TX_QUEUES 31
99 #ifndef IFLA_PROMISCUITY
100 #define IFLA_PROMISCUITY 30
106 #if !HAVE_DECL_PIVOT_ROOT
107 static inline int pivot_root(const char *new_root, const char *put_old) {
108 return syscall(SYS_pivot_root, new_root, put_old);
113 # ifndef __NR_fanotify_init
114 # define __NR_fanotify_init 300
116 # ifndef __NR_fanotify_mark
117 # define __NR_fanotify_mark 301
119 #elif defined _MIPS_SIM
120 # if _MIPS_SIM == _MIPS_SIM_ABI32
121 # ifndef __NR_fanotify_init
122 # define __NR_fanotify_init 4336
124 # ifndef __NR_fanotify_mark
125 # define __NR_fanotify_mark 4337
127 # elif _MIPS_SIM == _MIPS_SIM_NABI32
128 # ifndef __NR_fanotify_init
129 # define __NR_fanotify_init 6300
131 # ifndef __NR_fanotify_mark
132 # define __NR_fanotify_mark 6301
134 # elif _MIPS_SIM == _MIPS_SIM_ABI64
135 # ifndef __NR_fanotify_init
136 # define __NR_fanotify_init 5295
138 # ifndef __NR_fanotify_mark
139 # define __NR_fanotify_mark 5296
143 # ifndef __NR_fanotify_init
144 # define __NR_fanotify_init 338
146 # ifndef __NR_fanotify_mark
147 # define __NR_fanotify_mark 339
151 #ifndef HAVE_FANOTIFY_INIT
152 static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) {
153 return syscall(__NR_fanotify_init, flags, event_f_flags);
157 #ifndef HAVE_FANOTIFY_MARK
158 static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
159 int dfd, const char *pathname) {
160 #if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ \
161 || defined __arm__ && !defined __aarch64__
168 return syscall(__NR_fanotify_mark, fanotify_fd, flags,
169 _mask._32[0], _mask._32[1], dfd, pathname);
171 return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
176 #ifndef BTRFS_IOCTL_MAGIC
177 #define BTRFS_IOCTL_MAGIC 0x94
180 #ifndef BTRFS_PATH_NAME_MAX
181 #define BTRFS_PATH_NAME_MAX 4087
184 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
185 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
188 #ifndef BTRFS_FSID_SIZE
189 #define BTRFS_FSID_SIZE 16
192 #ifndef BTRFS_UUID_SIZE
193 #define BTRFS_UUID_SIZE 16
196 #ifndef HAVE_LINUX_BTRFS_H
197 struct btrfs_ioctl_vol_args {
199 char name[BTRFS_PATH_NAME_MAX + 1];
202 struct btrfs_ioctl_dev_info_args {
203 uint64_t devid; /* in/out */
204 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
205 uint64_t bytes_used; /* out */
206 uint64_t total_bytes; /* out */
207 uint64_t unused[379]; /* pad to 4k */
208 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
211 struct btrfs_ioctl_fs_info_args {
212 uint64_t max_id; /* out */
213 uint64_t num_devices; /* out */
214 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
215 uint64_t reserved[124]; /* pad to 1k */
219 #ifndef BTRFS_IOC_DEFRAG
220 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, struct btrfs_ioctl_vol_args)
223 #ifndef BTRFS_IOC_DEV_INFO
224 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
225 struct btrfs_ioctl_dev_info_args)
228 #ifndef BTRFS_IOC_FS_INFO
229 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
230 struct btrfs_ioctl_fs_info_args)
233 #ifndef BTRFS_SUPER_MAGIC
234 #define BTRFS_SUPER_MAGIC 0x9123683E
242 #define MS_PRIVATE (1 << 18)
245 #if !HAVE_DECL_GETTID
246 static inline pid_t gettid(void) {
247 return (pid_t) syscall(SYS_gettid);
252 #define SCM_SECURITY 0x03
255 #ifndef MS_STRICTATIME
256 #define MS_STRICTATIME (1<<24)
264 #define MS_SHARED (1<<20)
267 #ifndef PR_SET_NO_NEW_PRIVS
268 #define PR_SET_NO_NEW_PRIVS 38
271 #ifndef PR_SET_CHILD_SUBREAPER
272 #define PR_SET_CHILD_SUBREAPER 36
275 #ifndef MAX_HANDLE_SZ
276 #define MAX_HANDLE_SZ 128
279 #ifndef __NR_name_to_handle_at
280 # if defined(__x86_64__)
281 # define __NR_name_to_handle_at 303
282 # elif defined(__i386__)
283 # define __NR_name_to_handle_at 341
284 # elif defined(__arm__)
285 # define __NR_name_to_handle_at 370
286 # elif defined(__powerpc__)
287 # define __NR_name_to_handle_at 345
289 # error "__NR_name_to_handle_at is not defined"
293 #if !HAVE_DECL_NAME_TO_HANDLE_AT
295 unsigned int handle_bytes;
297 unsigned char f_handle[0];
300 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
301 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
305 #ifndef HAVE_SECURE_GETENV
306 # ifdef HAVE___SECURE_GETENV
307 # define secure_getenv __secure_getenv
309 # error "neither secure_getenv nor __secure_getenv are available"
313 #ifndef CIFS_MAGIC_NUMBER
314 # define CIFS_MAGIC_NUMBER 0xFF534D42
317 #ifndef TFD_TIMER_CANCEL_ON_SET
318 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
322 # define SO_REUSEPORT 15
326 # define EVIOCREVOKE _IOW('E', 0x91, int)
329 #ifndef DRM_IOCTL_SET_MASTER
330 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
333 #ifndef DRM_IOCTL_DROP_MASTER
334 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
337 #if defined(__i386__) || defined(__x86_64__)
339 /* The precise definition of __O_TMPFILE is arch specific, so let's
340 * just define this on x86 where we know the value. */
343 #define __O_TMPFILE 020000000
346 /* a horrid kludge trying to make sure that this will fail on old kernels */
348 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
354 # if defined(__x86_64__)
355 # define __NR_setns 308
356 # elif defined(__i386__)
357 # define __NR_setns 346
359 # error "__NR_setns is not defined"
364 static inline int setns(int fd, int nstype) {
365 return syscall(__NR_setns, fd, nstype);
369 #if !HAVE_DECL_LO_FLAGS_PARTSCAN
370 #define LO_FLAGS_PARTSCAN 8