85210bffd8
Network file systems generally do not offer inotify() that would work across the network. We hence cannot rely on inotify() exclusiely in those case. Provide an API to determine these cases, and suggest doing manual regular rechecks. Note that this is not complete yet, as we need to rescan journal dirs on network file systems explicitly to find new/removed files
256 lines
5.8 KiB
C
256 lines
5.8 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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/* Missing glibc definitions to access certain kernel APIs */
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#include <sys/resource.h>
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#include <sys/syscall.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <linux/oom.h>
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#ifdef HAVE_AUDIT
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#include <libaudit.h>
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#endif
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#include "macro.h"
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#ifdef ARCH_MIPS
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#include <asm/sgidefs.h>
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#endif
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#ifndef RLIMIT_RTTIME
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#define RLIMIT_RTTIME 15
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#endif
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#ifndef F_LINUX_SPECIFIC_BASE
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#define F_LINUX_SPECIFIC_BASE 1024
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#endif
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#ifndef F_SETPIPE_SZ
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#define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
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#endif
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#ifndef F_GETPIPE_SZ
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#define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
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#endif
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#ifndef IP_FREEBIND
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#define IP_FREEBIND 15
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#endif
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#ifndef OOM_SCORE_ADJ_MIN
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#define OOM_SCORE_ADJ_MIN (-1000)
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#endif
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#ifndef OOM_SCORE_ADJ_MAX
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#define OOM_SCORE_ADJ_MAX 1000
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#endif
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#ifndef AUDIT_SERVICE_START
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#define AUDIT_SERVICE_START 1130 /* Service (daemon) start */
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#endif
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#ifndef AUDIT_SERVICE_STOP
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#define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */
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#endif
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#ifndef TIOCVHANGUP
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#define TIOCVHANGUP 0x5437
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#endif
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#ifndef IP_TRANSPARENT
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#define IP_TRANSPARENT 19
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#endif
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#if !HAVE_DECL_PIVOT_ROOT
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static inline int pivot_root(const char *new_root, const char *put_old) {
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return syscall(SYS_pivot_root, new_root, put_old);
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}
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#endif
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#ifdef __x86_64__
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# ifndef __NR_fanotify_init
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# define __NR_fanotify_init 300
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# endif
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# ifndef __NR_fanotify_mark
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# define __NR_fanotify_mark 301
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# endif
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#elif defined _MIPS_SIM
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# if _MIPS_SIM == _MIPS_SIM_ABI32
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# ifndef __NR_fanotify_init
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# define __NR_fanotify_init 4336
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# endif
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# ifndef __NR_fanotify_mark
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# define __NR_fanotify_mark 4337
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# endif
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# elif _MIPS_SIM == _MIPS_SIM_NABI32
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# ifndef __NR_fanotify_init
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# define __NR_fanotify_init 6300
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# endif
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# ifndef __NR_fanotify_mark
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# define __NR_fanotify_mark 6301
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# endif
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# elif _MIPS_SIM == _MIPS_SIM_ABI64
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# ifndef __NR_fanotify_init
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# define __NR_fanotify_init 5295
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# endif
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# ifndef __NR_fanotify_mark
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# define __NR_fanotify_mark 5296
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# endif
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# endif
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#else
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# ifndef __NR_fanotify_init
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# define __NR_fanotify_init 338
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# endif
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# ifndef __NR_fanotify_mark
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# define __NR_fanotify_mark 339
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# endif
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#endif
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#ifndef HAVE_FANOTIFY_INIT
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static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) {
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return syscall(__NR_fanotify_init, flags, event_f_flags);
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}
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#endif
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#ifndef HAVE_FANOTIFY_MARK
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static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
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int dfd, const char *pathname) {
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#if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__
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union {
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uint64_t _64;
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uint32_t _32[2];
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} _mask;
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_mask._64 = mask;
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return syscall(__NR_fanotify_mark, fanotify_fd, flags,
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_mask._32[0], _mask._32[1], dfd, pathname);
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#else
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return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
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#endif
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}
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#endif
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#ifndef BTRFS_IOCTL_MAGIC
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#define BTRFS_IOCTL_MAGIC 0x94
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#endif
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#ifndef BTRFS_PATH_NAME_MAX
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#define BTRFS_PATH_NAME_MAX 4087
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#endif
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struct btrfs_ioctl_vol_args {
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int64_t fd;
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char name[BTRFS_PATH_NAME_MAX + 1];
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};
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#ifndef BTRFS_IOC_DEFRAG
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#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, struct btrfs_ioctl_vol_args)
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#endif
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#ifndef BTRFS_SUPER_MAGIC
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#define BTRFS_SUPER_MAGIC 0x9123683E
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#endif
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#ifndef MS_MOVE
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#define MS_MOVE 8192
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#endif
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#ifndef MS_PRIVATE
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#define MS_PRIVATE (1 << 18)
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#endif
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#if !HAVE_DECL_GETTID
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static inline pid_t gettid(void) {
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return (pid_t) syscall(SYS_gettid);
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}
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#endif
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#ifndef SCM_SECURITY
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#define SCM_SECURITY 0x03
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#endif
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#ifndef MS_STRICTATIME
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#define MS_STRICTATIME (1<<24)
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#endif
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#ifndef PR_SET_NO_NEW_PRIVS
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#define PR_SET_NO_NEW_PRIVS 38
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#endif
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#ifndef PR_SET_CHILD_SUBREAPER
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#define PR_SET_CHILD_SUBREAPER 36
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#endif
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#ifndef MAX_HANDLE_SZ
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#define MAX_HANDLE_SZ 128
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#endif
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#if defined __x86_64__
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# ifndef __NR_name_to_handle_at
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# define __NR_name_to_handle_at 303
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# endif
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#elif defined __i386__
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# ifndef __NR_name_to_handle_at
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# define __NR_name_to_handle_at 341
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# endif
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#elif defined __arm__
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# ifndef __NR_name_to_handle_at
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# define __NR_name_to_handle_at 370
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# endif
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#elif defined __powerpc__
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# ifndef __NR_name_to_handle_at
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# define __NR_name_to_handle_at 345
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# endif
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#else
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# ifndef __NR_name_to_handle_at
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# error __NR_name_to_handle_at is not defined
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# endif
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#endif
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#if !HAVE_DECL_NAME_TO_HANDLE_AT
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struct file_handle {
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unsigned int handle_bytes;
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int handle_type;
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unsigned char f_handle[0];
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};
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static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
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return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
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}
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#endif
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#ifndef HAVE_SECURE_GETENV
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# ifdef HAVE___SECURE_GETENV
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# define secure_getenv __secure_getenv
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# else
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# error neither secure_getenv nor __secure_getenv are available
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# endif
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#endif
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#ifndef CIFS_MAGIC_NUMBER
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#define CIFS_MAGIC_NUMBER 0xFF534D42
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#endif
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