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 #ifndef F_LINUX_SPECIFIC_BASE
51 #define F_LINUX_SPECIFIC_BASE 1024
55 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
59 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
63 #define IP_FREEBIND 15
66 #ifndef OOM_SCORE_ADJ_MIN
67 #define OOM_SCORE_ADJ_MIN (-1000)
70 #ifndef OOM_SCORE_ADJ_MAX
71 #define OOM_SCORE_ADJ_MAX 1000
74 #ifndef AUDIT_SERVICE_START
75 #define AUDIT_SERVICE_START 1130 /* Service (daemon) start */
78 #ifndef AUDIT_SERVICE_STOP
79 #define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */
83 #define TIOCVHANGUP 0x5437
86 #ifndef IP_TRANSPARENT
87 #define IP_TRANSPARENT 19
91 #define IFLA_CARRIER 33
92 #ifndef IFLA_NUM_RX_QUEUES
93 #define IFLA_NUM_RX_QUEUES 32
94 #ifndef IFLA_NUM_TX_QUEUES
95 #define IFLA_NUM_TX_QUEUES 31
96 #ifndef IFLA_PROMISCUITY
97 #define IFLA_PROMISCUITY 30
103 #if !HAVE_DECL_PIVOT_ROOT
104 static inline int pivot_root(const char *new_root, const char *put_old) {
105 return syscall(SYS_pivot_root, new_root, put_old);
110 # ifndef __NR_fanotify_init
111 # define __NR_fanotify_init 300
113 # ifndef __NR_fanotify_mark
114 # define __NR_fanotify_mark 301
116 #elif defined _MIPS_SIM
117 # if _MIPS_SIM == _MIPS_SIM_ABI32
118 # ifndef __NR_fanotify_init
119 # define __NR_fanotify_init 4336
121 # ifndef __NR_fanotify_mark
122 # define __NR_fanotify_mark 4337
124 # elif _MIPS_SIM == _MIPS_SIM_NABI32
125 # ifndef __NR_fanotify_init
126 # define __NR_fanotify_init 6300
128 # ifndef __NR_fanotify_mark
129 # define __NR_fanotify_mark 6301
131 # elif _MIPS_SIM == _MIPS_SIM_ABI64
132 # ifndef __NR_fanotify_init
133 # define __NR_fanotify_init 5295
135 # ifndef __NR_fanotify_mark
136 # define __NR_fanotify_mark 5296
140 # ifndef __NR_fanotify_init
141 # define __NR_fanotify_init 338
143 # ifndef __NR_fanotify_mark
144 # define __NR_fanotify_mark 339
148 #ifndef HAVE_FANOTIFY_INIT
149 static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) {
150 return syscall(__NR_fanotify_init, flags, event_f_flags);
154 #ifndef HAVE_FANOTIFY_MARK
155 static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
156 int dfd, const char *pathname) {
157 #if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ \
158 || defined __arm__ && !defined __aarch64__
165 return syscall(__NR_fanotify_mark, fanotify_fd, flags,
166 _mask._32[0], _mask._32[1], dfd, pathname);
168 return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
173 #ifndef BTRFS_IOCTL_MAGIC
174 #define BTRFS_IOCTL_MAGIC 0x94
177 #ifndef BTRFS_PATH_NAME_MAX
178 #define BTRFS_PATH_NAME_MAX 4087
181 #ifndef BTRFS_DEVICE_PATH_NAME_MAX
182 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
185 #ifndef BTRFS_FSID_SIZE
186 #define BTRFS_FSID_SIZE 16
189 #ifndef BTRFS_UUID_SIZE
190 #define BTRFS_UUID_SIZE 16
193 #ifndef HAVE_LINUX_BTRFS_H
194 struct btrfs_ioctl_vol_args {
196 char name[BTRFS_PATH_NAME_MAX + 1];
199 struct btrfs_ioctl_dev_info_args {
200 uint64_t devid; /* in/out */
201 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
202 uint64_t bytes_used; /* out */
203 uint64_t total_bytes; /* out */
204 uint64_t unused[379]; /* pad to 4k */
205 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
208 struct btrfs_ioctl_fs_info_args {
209 uint64_t max_id; /* out */
210 uint64_t num_devices; /* out */
211 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
212 uint64_t reserved[124]; /* pad to 1k */
216 #ifndef BTRFS_IOC_DEFRAG
217 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, struct btrfs_ioctl_vol_args)
220 #ifndef BTRFS_IOC_DEV_INFO
221 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
222 struct btrfs_ioctl_dev_info_args)
225 #ifndef BTRFS_IOC_FS_INFO
226 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
227 struct btrfs_ioctl_fs_info_args)
230 #ifndef BTRFS_SUPER_MAGIC
231 #define BTRFS_SUPER_MAGIC 0x9123683E
239 #define MS_PRIVATE (1 << 18)
242 #if !HAVE_DECL_GETTID
243 static inline pid_t gettid(void) {
244 return (pid_t) syscall(SYS_gettid);
249 #define SCM_SECURITY 0x03
252 #ifndef MS_STRICTATIME
253 #define MS_STRICTATIME (1<<24)
261 #define MS_SHARED (1<<20)
264 #ifndef PR_SET_NO_NEW_PRIVS
265 #define PR_SET_NO_NEW_PRIVS 38
268 #ifndef PR_SET_CHILD_SUBREAPER
269 #define PR_SET_CHILD_SUBREAPER 36
272 #ifndef MAX_HANDLE_SZ
273 #define MAX_HANDLE_SZ 128
276 #ifndef __NR_name_to_handle_at
277 # if defined(__x86_64__)
278 # define __NR_name_to_handle_at 303
279 # elif defined(__i386__)
280 # define __NR_name_to_handle_at 341
281 # elif defined(__arm__)
282 # define __NR_name_to_handle_at 370
283 # elif defined(__powerpc__)
284 # define __NR_name_to_handle_at 345
286 # error "__NR_name_to_handle_at is not defined"
290 #if !HAVE_DECL_NAME_TO_HANDLE_AT
292 unsigned int handle_bytes;
294 unsigned char f_handle[0];
297 static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
298 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
302 #ifndef HAVE_SECURE_GETENV
303 # ifdef HAVE___SECURE_GETENV
304 # define secure_getenv __secure_getenv
306 # error "neither secure_getenv nor __secure_getenv are available"
310 #ifndef CIFS_MAGIC_NUMBER
311 # define CIFS_MAGIC_NUMBER 0xFF534D42
314 #ifndef TFD_TIMER_CANCEL_ON_SET
315 # define TFD_TIMER_CANCEL_ON_SET (1 << 1)
319 # define SO_REUSEPORT 15
323 # define EVIOCREVOKE _IOW('E', 0x91, int)
326 #ifndef DRM_IOCTL_SET_MASTER
327 # define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
330 #ifndef DRM_IOCTL_DROP_MASTER
331 # define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
334 #if defined(__i386__) || defined(__x86_64__)
336 /* The precise definition of __O_TMPFILE is arch specific, so let's
337 * just define this on x86 where we know the value. */
340 #define __O_TMPFILE 020000000
343 /* a horrid kludge trying to make sure that this will fail on old kernels */
345 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
351 # if defined(__x86_64__)
352 # define __NR_setns 308
353 # elif defined(__i386__)
354 # define __NR_setns 346
356 # error "__NR_setns is not defined"
361 static inline int setns(int fd, int nstype) {
362 return syscall(__NR_setns, fd, nstype);