1e03b754ae
Event processes now get re-used after they handled an event. This reduces pressure on the CPU significantly because cloned event processes no longer cause page faults in the main daemon. After the events have settled, the no longer needed worker processes get killed.
143 lines
5.1 KiB
C
143 lines
5.1 KiB
C
/*
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* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
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* Copyright (C) 2003-2008 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _UDEV_H_
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#define _UDEV_H_
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#include <sys/types.h>
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#include <sys/param.h>
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#include "lib/libudev.h"
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#include "lib/libudev-private.h"
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#define DEFAULT_FAKE_PARTITIONS_COUNT 15
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#define UDEV_EVENT_TIMEOUT 180
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#define UDEV_CTRL_SOCK_PATH "@" UDEV_PREFIX "/org/kernel/udev/udevd"
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#define UDEV_MAX(a,b) ((a) > (b) ? (a) : (b))
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#define READ_END 0
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#define WRITE_END 1
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static inline void logging_init(const char *program_name)
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{
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openlog(program_name, LOG_PID | LOG_CONS, LOG_DAEMON);
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}
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static inline void logging_msg(struct udev *udev, int priority,
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const char *file, int line, const char *fn,
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const char *format, va_list args)
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{
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vsyslog(priority, format, args);
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}
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static inline void logging_close(void)
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{
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closelog();
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}
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struct udev_event {
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struct udev *udev;
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struct udev_device *dev;
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struct udev_device *dev_parent;
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char *name;
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char *tmp_node;
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char *program_result;
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mode_t mode;
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uid_t uid;
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gid_t gid;
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struct udev_list_node run_list;
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unsigned int group_final:1;
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unsigned int owner_final:1;
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unsigned int mode_final:1;
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unsigned int name_final:1;
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unsigned int devlink_final:1;
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unsigned int run_final:1;
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unsigned int ignore_device:1;
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unsigned int inotify_watch:1;
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};
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struct udev_watch {
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struct udev_list_node node;
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int handle;
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char *name;
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};
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/* udev-rules.c */
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struct udev_rules;
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struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names);
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void udev_rules_unref(struct udev_rules *rules);
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int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event);
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/* udev-event.c */
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struct udev_event *udev_event_new(struct udev_device *dev);
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void udev_event_unref(struct udev_event *event);
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int udev_event_execute_rules(struct udev_event *event, struct udev_rules *rules);
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int udev_event_execute_run(struct udev_event *event);
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size_t udev_event_apply_format(struct udev_event *event, const char *src, char *dest, size_t size);
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int udev_event_apply_subsys_kernel(struct udev_event *event, const char *string,
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char *result, size_t maxsize, int read_value);
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/* udev-watch.c */
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int udev_watch_init(struct udev *udev);
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void udev_watch_restore(struct udev *udev);
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void udev_watch_begin(struct udev *udev, struct udev_device *dev);
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void udev_watch_end(struct udev *udev, struct udev_device *dev);
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struct udev_device *udev_watch_lookup(struct udev *udev, int wd);
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/* udev-node.c */
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int udev_node_mknod(struct udev_device *dev, const char *file, dev_t devnum, mode_t mode, uid_t uid, gid_t gid);
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int udev_node_add(struct udev_device *dev, mode_t mode, uid_t uid, gid_t gid);
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int udev_node_remove(struct udev_device *dev);
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void udev_node_update_old_links(struct udev_device *dev, struct udev_device *dev_old);
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/* udev-util.c */
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int util_create_path(struct udev *udev, const char *path);
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int util_delete_path(struct udev *udev, const char *path);
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int util_unlink_secure(struct udev *udev, const char *filename);
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uid_t util_lookup_user(struct udev *udev, const char *user);
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gid_t util_lookup_group(struct udev *udev, const char *group);
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int util_run_program(struct udev *udev, const char *command, char **envp,
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char *result, size_t ressize, size_t *reslen);
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int util_resolve_subsys_kernel(struct udev *udev, const char *string,
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char *result, size_t maxsize, int read_value);
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/* udev-selinux.c */
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#ifndef USE_SELINUX
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static inline void udev_selinux_init(struct udev *udev) {}
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static inline void udev_selinux_exit(struct udev *udev) {}
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static inline void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode) {}
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static inline void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode) {}
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static inline void udev_selinux_resetfscreatecon(struct udev *udev) {}
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#else
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void udev_selinux_init(struct udev *udev);
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void udev_selinux_exit(struct udev *udev);
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void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode);
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void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode);
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void udev_selinux_resetfscreatecon(struct udev *udev);
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#endif
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/* udevadm commands */
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int udevadm_monitor(struct udev *udev, int argc, char *argv[]);
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int udevadm_info(struct udev *udev, int argc, char *argv[]);
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int udevadm_control(struct udev *udev, int argc, char *argv[]);
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int udevadm_trigger(struct udev *udev, int argc, char *argv[]);
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int udevadm_settle(struct udev *udev, int argc, char *argv[]);
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int udevadm_test(struct udev *udev, int argc, char *argv[]);
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#endif
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