2 * Copyright (C) 2003-2013 Kay Sievers <kay@vrfy.org>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include <sys/prctl.h>
29 #include <sys/epoll.h>
31 #include <sys/signalfd.h>
34 #include "rtnl-util.h"
36 struct udev_event
*udev_event_new(struct udev_device
*dev
) {
37 struct udev
*udev
= udev_device_get_udev(dev
);
38 struct udev_event
*event
;
40 event
= new0(struct udev_event
, 1);
45 udev_list_init(udev
, &event
->run_list
, false);
46 udev_list_init(udev
, &event
->seclabel_list
, false);
47 event
->fd_signal
= -1;
48 event
->birth_usec
= now(CLOCK_MONOTONIC
);
52 void udev_event_unref(struct udev_event
*event
) {
55 sd_rtnl_unref(event
->rtnl
);
56 udev_list_cleanup(&event
->run_list
);
57 udev_list_cleanup(&event
->seclabel_list
);
58 free(event
->program_result
);
63 size_t udev_event_apply_format(struct udev_event
*event
, const char *src
, char *dest
, size_t size
) {
64 struct udev_device
*dev
= event
->dev
;
84 static const struct subst_map
{
89 { .name
= "devnode", .fmt
= 'N', .type
= SUBST_DEVNODE
},
90 { .name
= "tempnode", .fmt
= 'N', .type
= SUBST_DEVNODE
},
91 { .name
= "attr", .fmt
= 's', .type
= SUBST_ATTR
},
92 { .name
= "sysfs", .fmt
= 's', .type
= SUBST_ATTR
},
93 { .name
= "env", .fmt
= 'E', .type
= SUBST_ENV
},
94 { .name
= "kernel", .fmt
= 'k', .type
= SUBST_KERNEL
},
95 { .name
= "number", .fmt
= 'n', .type
= SUBST_KERNEL_NUMBER
},
96 { .name
= "driver", .fmt
= 'd', .type
= SUBST_DRIVER
},
97 { .name
= "devpath", .fmt
= 'p', .type
= SUBST_DEVPATH
},
98 { .name
= "id", .fmt
= 'b', .type
= SUBST_ID
},
99 { .name
= "major", .fmt
= 'M', .type
= SUBST_MAJOR
},
100 { .name
= "minor", .fmt
= 'm', .type
= SUBST_MINOR
},
101 { .name
= "result", .fmt
= 'c', .type
= SUBST_RESULT
},
102 { .name
= "parent", .fmt
= 'P', .type
= SUBST_PARENT
},
103 { .name
= "name", .fmt
= 'D', .type
= SUBST_NAME
},
104 { .name
= "links", .fmt
= 'L', .type
= SUBST_LINKS
},
105 { .name
= "root", .fmt
= 'r', .type
= SUBST_ROOT
},
106 { .name
= "sys", .fmt
= 'S', .type
= SUBST_SYS
},
117 enum subst_type type
= SUBST_UNKNOWN
;
118 char attrbuf
[UTIL_PATH_SIZE
];
121 while (from
[0] != '\0') {
122 if (from
[0] == '$') {
123 /* substitute named variable */
126 if (from
[1] == '$') {
131 for (i
= 0; i
< ELEMENTSOF(map
); i
++) {
132 if (startswith(&from
[1], map
[i
].name
)) {
134 from
+= strlen(map
[i
].name
)+1;
138 } else if (from
[0] == '%') {
139 /* substitute format char */
142 if (from
[1] == '%') {
147 for (i
= 0; i
< ELEMENTSOF(map
); i
++) {
148 if (from
[1] == map
[i
].fmt
) {
167 /* extract possible $format{attr} */
168 if (from
[0] == '{') {
172 for (i
= 0; from
[i
] != '}'; i
++) {
173 if (from
[i
] == '\0') {
174 log_error("missing closing brace for format '%s'", src
);
178 if (i
>= sizeof(attrbuf
))
180 memcpy(attrbuf
, from
, i
);
190 l
= strpcpy(&s
, l
, udev_device_get_devpath(dev
));
193 l
= strpcpy(&s
, l
, udev_device_get_sysname(dev
));
195 case SUBST_KERNEL_NUMBER
:
196 if (udev_device_get_sysnum(dev
) == NULL
)
198 l
= strpcpy(&s
, l
, udev_device_get_sysnum(dev
));
201 if (event
->dev_parent
== NULL
)
203 l
= strpcpy(&s
, l
, udev_device_get_sysname(event
->dev_parent
));
208 if (event
->dev_parent
== NULL
)
211 driver
= udev_device_get_driver(event
->dev_parent
);
214 l
= strpcpy(&s
, l
, driver
);
218 char num
[UTIL_PATH_SIZE
];
220 sprintf(num
, "%u", major(udev_device_get_devnum(dev
)));
221 l
= strpcpy(&s
, l
, num
);
225 char num
[UTIL_PATH_SIZE
];
227 sprintf(num
, "%u", minor(udev_device_get_devnum(dev
)));
228 l
= strpcpy(&s
, l
, num
);
235 if (event
->program_result
== NULL
)
237 /* get part part of the result string */
240 i
= strtoul(attr
, &rest
, 10);
242 char result
[UTIL_PATH_SIZE
];
243 char tmp
[UTIL_PATH_SIZE
];
246 strscpy(result
, sizeof(result
), event
->program_result
);
249 while (cpos
[0] != '\0' && !isspace(cpos
[0]))
251 while (isspace(cpos
[0]))
257 log_error("requested part of result string not found");
260 strscpy(tmp
, sizeof(tmp
), cpos
);
261 /* %{2+}c copies the whole string from the second part on */
262 if (rest
[0] != '+') {
263 cpos
= strchr(tmp
, ' ');
267 l
= strpcpy(&s
, l
, tmp
);
269 l
= strpcpy(&s
, l
, event
->program_result
);
274 const char *value
= NULL
;
275 char vbuf
[UTIL_NAME_SIZE
];
280 log_error("missing file parameter for attr");
284 /* try to read the value specified by "[dmi/id]product_name" */
285 if (util_resolve_subsys_kernel(event
->udev
, attr
, vbuf
, sizeof(vbuf
), 1) == 0)
288 /* try to read the attribute the device */
290 value
= udev_device_get_sysattr_value(event
->dev
, attr
);
292 /* try to read the attribute of the parent device, other matches have selected */
293 if (value
== NULL
&& event
->dev_parent
!= NULL
&& event
->dev_parent
!= event
->dev
)
294 value
= udev_device_get_sysattr_value(event
->dev_parent
, attr
);
299 /* strip trailing whitespace, and replace unwanted characters */
301 strscpy(vbuf
, sizeof(vbuf
), value
);
303 while (len
> 0 && isspace(vbuf
[--len
]))
305 count
= util_replace_chars(vbuf
, UDEV_ALLOWED_CHARS_INPUT
);
307 log_debug("%i character(s) replaced" , count
);
308 l
= strpcpy(&s
, l
, vbuf
);
312 struct udev_device
*dev_parent
;
315 dev_parent
= udev_device_get_parent(event
->dev
);
316 if (dev_parent
== NULL
)
318 devnode
= udev_device_get_devnode(dev_parent
);
320 l
= strpcpy(&s
, l
, devnode
+ strlen("/dev/"));
324 if (udev_device_get_devnode(dev
) != NULL
)
325 l
= strpcpy(&s
, l
, udev_device_get_devnode(dev
));
328 if (event
->name
!= NULL
)
329 l
= strpcpy(&s
, l
, event
->name
);
330 else if (udev_device_get_devnode(dev
) != NULL
)
331 l
= strpcpy(&s
, l
, udev_device_get_devnode(dev
) + strlen("/dev/"));
333 l
= strpcpy(&s
, l
, udev_device_get_sysname(dev
));
336 struct udev_list_entry
*list_entry
;
338 list_entry
= udev_device_get_devlinks_list_entry(dev
);
339 if (list_entry
== NULL
)
341 l
= strpcpy(&s
, l
, udev_list_entry_get_name(list_entry
) + strlen("/dev/"));
342 udev_list_entry_foreach(list_entry
, udev_list_entry_get_next(list_entry
))
343 l
= strpcpyl(&s
, l
, " ", udev_list_entry_get_name(list_entry
) + strlen("/dev/"), NULL
);
347 l
= strpcpy(&s
, l
, "/dev");
350 l
= strpcpy(&s
, l
, "/sys");
358 value
= udev_device_get_property_value(event
->dev
, attr
);
361 l
= strpcpy(&s
, l
, value
);
365 log_error("unknown substitution type=%i", type
);
375 static int spawn_exec(struct udev_event
*event
,
376 const char *cmd
, char *const argv
[], char **envp
, const sigset_t
*sigmask
,
377 int fd_stdout
, int fd_stderr
) {
378 _cleanup_close_
int fd
= -1;
380 /* discard child output or connect to pipe */
381 fd
= open("/dev/null", O_RDWR
);
383 dup2(fd
, STDIN_FILENO
);
385 dup2(fd
, STDOUT_FILENO
);
387 dup2(fd
, STDERR_FILENO
);
389 log_error_errno(errno
, "open /dev/null failed: %m");
391 /* connect pipes to std{out,err} */
392 if (fd_stdout
>= 0) {
393 dup2(fd_stdout
, STDOUT_FILENO
);
394 safe_close(fd_stdout
);
396 if (fd_stderr
>= 0) {
397 dup2(fd_stderr
, STDERR_FILENO
);
398 safe_close(fd_stderr
);
401 /* terminate child in case parent goes away */
402 prctl(PR_SET_PDEATHSIG
, SIGTERM
);
404 /* restore original udev sigmask before exec */
406 sigprocmask(SIG_SETMASK
, sigmask
, NULL
);
408 execve(argv
[0], argv
, envp
);
411 log_error_errno(errno
, "failed to execute '%s' '%s': %m", argv
[0], cmd
);
416 static void spawn_read(struct udev_event
*event
,
419 int fd_stdout
, int fd_stderr
,
420 char *result
, size_t ressize
) {
421 _cleanup_close_
int fd_ep
= -1;
422 struct epoll_event ep_outpipe
= {
424 .data
.ptr
= &fd_stdout
,
426 struct epoll_event ep_errpipe
= {
428 .data
.ptr
= &fd_stderr
,
433 /* read from child if requested */
434 if (fd_stdout
< 0 && fd_stderr
< 0)
437 fd_ep
= epoll_create1(EPOLL_CLOEXEC
);
439 log_error_errno(errno
, "error creating epoll fd: %m");
443 if (fd_stdout
>= 0) {
444 r
= epoll_ctl(fd_ep
, EPOLL_CTL_ADD
, fd_stdout
, &ep_outpipe
);
446 log_error_errno(errno
, "fail to add stdout fd to epoll: %m");
451 if (fd_stderr
>= 0) {
452 r
= epoll_ctl(fd_ep
, EPOLL_CTL_ADD
, fd_stderr
, &ep_errpipe
);
454 log_error_errno(errno
, "fail to add stderr fd to epoll: %m");
459 /* read child output */
460 while (fd_stdout
>= 0 || fd_stderr
>= 0) {
463 struct epoll_event ev
[4];
466 if (timeout_usec
> 0) {
469 age_usec
= now(CLOCK_MONOTONIC
) - event
->birth_usec
;
470 if (age_usec
>= timeout_usec
) {
471 log_error("timeout '%s'", cmd
);
474 timeout
= ((timeout_usec
- age_usec
) / USEC_PER_MSEC
) + MSEC_PER_SEC
;
479 fdcount
= epoll_wait(fd_ep
, ev
, ELEMENTSOF(ev
), timeout
);
483 log_error_errno(errno
, "failed to poll: %m");
485 } else if (fdcount
== 0) {
486 log_error("timeout '%s'", cmd
);
490 for (i
= 0; i
< fdcount
; i
++) {
491 int *fd
= (int *)ev
[i
].data
.ptr
;
496 if (ev
[i
].events
& EPOLLIN
) {
500 count
= read(*fd
, buf
, sizeof(buf
)-1);
505 /* store stdout result */
506 if (result
!= NULL
&& *fd
== fd_stdout
) {
507 if (respos
+ count
< ressize
) {
508 memcpy(&result
[respos
], buf
, count
);
511 log_error("'%s' ressize %zu too short", cmd
, ressize
);
515 /* log debug output only if we watch stderr */
516 if (fd_stderr
>= 0) {
521 while ((line
= strsep(&pos
, "\n"))) {
522 if (pos
!= NULL
|| line
[0] != '\0')
523 log_debug("'%s'(%s) '%s'", cmd
, *fd
== fd_stdout
? "out" : "err" , line
);
526 } else if (ev
[i
].events
& EPOLLHUP
) {
527 r
= epoll_ctl(fd_ep
, EPOLL_CTL_DEL
, *fd
, NULL
);
529 log_error_errno(errno
, "failed to remove fd from epoll: %m");
537 /* return the child's stdout string */
539 result
[respos
] = '\0';
542 static int spawn_wait(struct udev_event
*event
,
544 usec_t timeout_warn_usec
,
545 const char *cmd
, pid_t pid
) {
546 struct pollfd pfd
[1];
549 pfd
[0].events
= POLLIN
;
550 pfd
[0].fd
= event
->fd_signal
;
554 int timeout_warn
= 0;
557 if (timeout_usec
> 0) {
560 age_usec
= now(CLOCK_MONOTONIC
) - event
->birth_usec
;
561 if (age_usec
>= timeout_usec
)
564 if (timeout_warn_usec
> 0)
565 timeout_warn
= ((timeout_warn_usec
- age_usec
) / USEC_PER_MSEC
) + MSEC_PER_SEC
;
567 timeout
= ((timeout_usec
- timeout_warn_usec
- age_usec
) / USEC_PER_MSEC
) + MSEC_PER_SEC
;
573 fdcount
= poll(pfd
, 1, timeout_warn
);
578 log_error_errno(errno
, "failed to poll: %m");
582 log_warning("slow: '%s' ["PID_FMT
"]", cmd
, pid
);
584 fdcount
= poll(pfd
, 1, timeout
);
589 log_error_errno(errno
, "failed to poll: %m");
593 log_error("timeout: killing '%s' ["PID_FMT
"]", cmd
, pid
);
598 if (pfd
[0].revents
& POLLIN
) {
599 struct signalfd_siginfo fdsi
;
603 size
= read(event
->fd_signal
, &fdsi
, sizeof(struct signalfd_siginfo
));
604 if (size
!= sizeof(struct signalfd_siginfo
))
607 switch (fdsi
.ssi_signo
) {
609 event
->sigterm
= true;
612 if (waitpid(pid
, &status
, WNOHANG
) < 0)
614 if (WIFEXITED(status
)) {
615 log_debug("'%s' ["PID_FMT
"] exit with return code %i", cmd
, pid
, WEXITSTATUS(status
));
616 if (WEXITSTATUS(status
) != 0)
618 } else if (WIFSIGNALED(status
)) {
619 log_error("'%s' ["PID_FMT
"] terminated by signal %i (%s)", cmd
, pid
, WTERMSIG(status
), strsignal(WTERMSIG(status
)));
621 } else if (WIFSTOPPED(status
)) {
622 log_error("'%s' ["PID_FMT
"] stopped", cmd
, pid
);
624 } else if (WIFCONTINUED(status
)) {
625 log_error("'%s' ["PID_FMT
"] continued", cmd
, pid
);
628 log_error("'%s' ["PID_FMT
"] exit with status 0x%04x", cmd
, pid
, status
);
640 int udev_build_argv(struct udev
*udev
, char *cmd
, int *argc
, char *argv
[]) {
644 if (strchr(cmd
, ' ') == NULL
) {
650 while (pos
!= NULL
&& pos
[0] != '\0') {
651 if (pos
[0] == '\'') {
652 /* do not separate quotes */
654 argv
[i
] = strsep(&pos
, "\'");
656 while (pos
[0] == ' ')
659 argv
[i
] = strsep(&pos
, " ");
661 while (pos
[0] == ' ')
673 int udev_event_spawn(struct udev_event
*event
,
675 usec_t timeout_warn_usec
,
676 const char *cmd
, char **envp
, const sigset_t
*sigmask
,
677 char *result
, size_t ressize
) {
678 int outpipe
[2] = {-1, -1};
679 int errpipe
[2] = {-1, -1};
681 char arg
[UTIL_PATH_SIZE
];
683 char program
[UTIL_PATH_SIZE
];
686 strscpy(arg
, sizeof(arg
), cmd
);
687 udev_build_argv(event
->udev
, arg
, NULL
, argv
);
689 /* pipes from child to parent */
690 if (result
!= NULL
|| log_get_max_level() >= LOG_INFO
) {
691 if (pipe2(outpipe
, O_NONBLOCK
) != 0) {
693 log_error_errno(errno
, "pipe failed: %m");
697 if (log_get_max_level() >= LOG_INFO
) {
698 if (pipe2(errpipe
, O_NONBLOCK
) != 0) {
700 log_error_errno(errno
, "pipe failed: %m");
705 /* allow programs in /usr/lib/udev/ to be called without the path */
706 if (argv
[0][0] != '/') {
707 strscpyl(program
, sizeof(program
), UDEVLIBEXECDIR
"/", argv
[0], NULL
);
714 /* child closes parent's ends of pipes */
715 if (outpipe
[READ_END
] >= 0) {
716 close(outpipe
[READ_END
]);
717 outpipe
[READ_END
] = -1;
719 if (errpipe
[READ_END
] >= 0) {
720 close(errpipe
[READ_END
]);
721 errpipe
[READ_END
] = -1;
724 log_debug("starting '%s'", cmd
);
726 spawn_exec(event
, cmd
, argv
, envp
, sigmask
,
727 outpipe
[WRITE_END
], errpipe
[WRITE_END
]);
731 log_error_errno(errno
, "fork of '%s' failed: %m", cmd
);
735 /* parent closed child's ends of pipes */
736 if (outpipe
[WRITE_END
] >= 0) {
737 close(outpipe
[WRITE_END
]);
738 outpipe
[WRITE_END
] = -1;
740 if (errpipe
[WRITE_END
] >= 0) {
741 close(errpipe
[WRITE_END
]);
742 errpipe
[WRITE_END
] = -1;
748 outpipe
[READ_END
], errpipe
[READ_END
],
751 err
= spawn_wait(event
, timeout_usec
, timeout_warn_usec
, cmd
, pid
);
755 if (outpipe
[READ_END
] >= 0)
756 close(outpipe
[READ_END
]);
757 if (outpipe
[WRITE_END
] >= 0)
758 close(outpipe
[WRITE_END
]);
759 if (errpipe
[READ_END
] >= 0)
760 close(errpipe
[READ_END
]);
761 if (errpipe
[WRITE_END
] >= 0)
762 close(errpipe
[WRITE_END
]);
766 static int rename_netif(struct udev_event
*event
) {
767 struct udev_device
*dev
= event
->dev
;
772 oldname
= udev_device_get_sysname(dev
);
774 strscpy(name
, IFNAMSIZ
, event
->name
);
776 r
= rtnl_set_link_name(&event
->rtnl
, udev_device_get_ifindex(dev
), name
);
778 return log_error_errno(r
, "Error changing net interface name '%s' to '%s': %m", oldname
, name
);
780 log_debug("renamed network interface '%s' to '%s'", oldname
, name
);
785 void udev_event_execute_rules(struct udev_event
*event
,
786 usec_t timeout_usec
, usec_t timeout_warn_usec
,
787 struct udev_list
*properties_list
,
788 struct udev_rules
*rules
,
789 const sigset_t
*sigmask
) {
790 struct udev_device
*dev
= event
->dev
;
792 if (udev_device_get_subsystem(dev
) == NULL
)
795 if (streq(udev_device_get_action(dev
), "remove")) {
796 udev_device_read_db(dev
);
797 udev_device_delete_db(dev
);
798 udev_device_tag_index(dev
, NULL
, false);
800 if (major(udev_device_get_devnum(dev
)) != 0)
801 udev_watch_end(event
->udev
, dev
);
803 udev_rules_apply_to_event(rules
, event
,
804 timeout_usec
, timeout_warn_usec
,
808 if (major(udev_device_get_devnum(dev
)) != 0)
809 udev_node_remove(dev
);
811 event
->dev_db
= udev_device_shallow_clone(dev
);
812 if (event
->dev_db
!= NULL
) {
813 udev_device_read_db(event
->dev_db
);
814 udev_device_set_info_loaded(event
->dev_db
);
816 /* disable watch during event processing */
817 if (major(udev_device_get_devnum(dev
)) != 0)
818 udev_watch_end(event
->udev
, event
->dev_db
);
821 if (major(udev_device_get_devnum(dev
)) == 0 &&
822 streq(udev_device_get_action(dev
), "move"))
823 udev_device_copy_properties(dev
, event
->dev_db
);
825 udev_rules_apply_to_event(rules
, event
,
826 timeout_usec
, timeout_warn_usec
,
830 /* rename a new network interface, if needed */
831 if (udev_device_get_ifindex(dev
) > 0 && streq(udev_device_get_action(dev
), "add") &&
832 event
->name
!= NULL
&& !streq(event
->name
, udev_device_get_sysname(dev
))) {
835 r
= rename_netif(event
);
837 log_warning_errno(r
, "could not rename interface '%d' from '%s' to '%s': %m", udev_device_get_ifindex(dev
),
838 udev_device_get_sysname(dev
), event
->name
);
840 r
= udev_device_rename(dev
, event
->name
);
842 log_warning_errno(r
, "renamed interface '%d' from '%s' to '%s', but could not update udev_device: %m",
843 udev_device_get_ifindex(dev
), udev_device_get_sysname(dev
), event
->name
);
845 log_debug("changed devpath to '%s'", udev_device_get_devpath(dev
));
849 if (major(udev_device_get_devnum(dev
)) > 0) {
852 /* remove/update possible left-over symlinks from old database entry */
853 if (event
->dev_db
!= NULL
)
854 udev_node_update_old_links(dev
, event
->dev_db
);
856 if (!event
->owner_set
)
857 event
->uid
= udev_device_get_devnode_uid(dev
);
859 if (!event
->group_set
)
860 event
->gid
= udev_device_get_devnode_gid(dev
);
862 if (!event
->mode_set
) {
863 if (udev_device_get_devnode_mode(dev
) > 0) {
864 /* kernel supplied value */
865 event
->mode
= udev_device_get_devnode_mode(dev
);
866 } else if (event
->gid
> 0) {
867 /* default 0660 if a group is assigned */
875 apply
= streq(udev_device_get_action(dev
), "add") || event
->owner_set
|| event
->group_set
|| event
->mode_set
;
876 udev_node_add(dev
, apply
, event
->mode
, event
->uid
, event
->gid
, &event
->seclabel_list
);
879 /* preserve old, or get new initialization timestamp */
880 if (event
->dev_db
!= NULL
&& udev_device_get_usec_initialized(event
->dev_db
) > 0)
881 udev_device_set_usec_initialized(event
->dev
, udev_device_get_usec_initialized(event
->dev_db
));
882 else if (udev_device_get_usec_initialized(event
->dev
) == 0)
883 udev_device_set_usec_initialized(event
->dev
, now(CLOCK_MONOTONIC
));
885 /* (re)write database file */
886 udev_device_update_db(dev
);
887 udev_device_tag_index(dev
, event
->dev_db
, true);
888 udev_device_set_is_initialized(dev
);
890 udev_device_unref(event
->dev_db
);
891 event
->dev_db
= NULL
;
895 void udev_event_execute_run(struct udev_event
*event
, usec_t timeout_usec
, usec_t timeout_warn_usec
, const sigset_t
*sigmask
) {
896 struct udev_list_entry
*list_entry
;
898 udev_list_entry_foreach(list_entry
, udev_list_get_entry(&event
->run_list
)) {
899 const char *cmd
= udev_list_entry_get_name(list_entry
);
900 enum udev_builtin_cmd builtin_cmd
= udev_list_entry_get_num(list_entry
);
902 if (builtin_cmd
< UDEV_BUILTIN_MAX
) {
903 char command
[UTIL_PATH_SIZE
];
905 udev_event_apply_format(event
, cmd
, command
, sizeof(command
));
906 udev_builtin_run(event
->dev
, builtin_cmd
, command
, false);
908 char program
[UTIL_PATH_SIZE
];
911 if (event
->exec_delay
> 0) {
912 log_debug("delay execution of '%s'", program
);
913 sleep(event
->exec_delay
);
916 udev_event_apply_format(event
, cmd
, program
, sizeof(program
));
917 envp
= udev_device_get_properties_envp(event
->dev
);
918 udev_event_spawn(event
, timeout_usec
, timeout_warn_usec
, program
, envp
, sigmask
, NULL
, 0);