4 #include <dirent.h> /* readdir() */
7 //#include <inttypes.h>
18 /** \file afs.c Paraslash's audio file selector. */
21 * Compare two osl objects of string type.
23 * \param obj1 Pointer to the first object.
24 * \param obj2 Pointer to the second object.
26 * In any case, only \p MIN(obj1->size, obj2->size) characters of each string
27 * are taken into account.
29 * \return It returns an integer less than, equal to, or greater than zero if
30 * \a obj1 is found, respectively, to be less than, to match, or be greater than
33 * \sa strcmp(3), strncmp(3), osl_compare_func.
35 int string_compare(const struct osl_object
*obj1
, const struct osl_object
*obj2
)
37 const char *str1
= (const char *)obj1
->data
;
38 const char *str2
= (const char *)obj2
->data
;
39 return strncmp(str1
, str2
, PARA_MIN(obj1
->size
, obj2
->size
));
42 /** The osl tables used by afs. \sa blob.c */
44 /** Contains audio file information. See aft.c. */
46 /** The table for the paraslash attributes. See attribute.c. */
49 * Paraslash's scoring system is based on Gaussian normal
50 * distributions, and the relevant data is stored in the rbtrees of an
51 * osl table containing only volatile columns. See score.c for
56 * A standard blob table containing the mood definitions. For details
60 /** A blob table containing lyrics on a per-song basis. */
62 /** Another blob table for images (for example album cover art). */
64 /** Yet another blob table for storing standard playlists. */
66 /** How many tables are in use? */
70 static struct table_info afs_tables
[NUM_AFS_TABLES
];
73 /** The file descriptor for the local socket. */
76 * Value sent by the command handlers to identify themselves as
77 * children of the running para_server.
80 /** The associated task structure. */
86 * A wrapper for strtol(3).
88 * \param str The string to be converted to a long integer.
89 * \param result The converted value is stored here.
91 * \return Positive on success, -E_ATOL on errors.
93 * \sa strtol(3), atoi(3).
95 int para_atol(const char *str
, long *result
)
101 errno
= 0; /* To distinguish success/failure after call */
102 val
= strtol(str
, &endptr
, base
);
104 if (errno
== ERANGE
&& (val
== LONG_MAX
|| val
== LONG_MIN
))
105 goto out
; /* overflow */
106 if (errno
!= 0 && val
== 0)
107 goto out
; /* other error */
109 goto out
; /* No digits were found */
111 goto out
; /* Further characters after number */
119 * Struct to let para_server call a function specified from child context.
121 * Commands that need to change the state of para_server can't
122 * change the relevant data structures directly because commands
123 * are executed in a child process, i.e. they get their own
124 * virtual address space. This structure must be used to let
125 * para_server (i.e. the parent process) call a function specified
126 * by the child (the command handler).
128 * \sa fork(2), ipc.c.
130 struct callback_data
{
131 /** The function to be called. */
132 callback_function
*handler
;
133 /** The sma for the parameters of the callback function. */
135 /** The size of the query sma. */
137 /** If the callback produced a result, it is stored in this sma. */
139 /** The size of the result sma. */
141 /** The return value of the callback function. */
143 /** The return value of the callback() procedure. */
147 struct callback_query
{
148 /** The function to be called. */
149 callback_function
*handler
;
150 /** The number of bytes of the query */
154 struct callback_result
{
155 /** The number of bytes of the result. */
159 static struct callback_data
*shm_callback_data
;
160 static int callback_mutex
;
161 static int child_mutex
;
162 static int result_mutex
;
165 * Ask the parent process to call a given function.
167 * \param f The function to be called.
168 * \param query Pointer to arbitrary data for the callback.
169 * \param result Callback result will be stored here.
171 * This function creates a shared memory area, copies the buffer pointed to by
172 * \a buf to that area and notifies the parent process that \a f should be
173 * called ASAP. It provides proper locking via semaphores to protect against
174 * concurent access to the shared memory area and against concurrent access by
175 * another child process that asks to call the same function.
177 * \return Negative, if the shared memory area could not be set up. The return
178 * value of the callback function otherwise.
180 * \sa shm_new(), shm_attach(), shm_detach(), mutex_lock(), mutex_unlock(),
181 * shm_destroy(), struct callback_data, send_option_arg_callback_request(),
182 * send_standard_callback_request().
184 int send_callback_request(callback_function
*f
, struct osl_object
*query
,
185 struct osl_object
*result
)
187 struct callback_data cbd
= {.handler
= f
};
191 assert(query
->data
&& query
->size
);
192 ret
= shm_new(query
->size
);
195 cbd
.query_shmid
= ret
;
196 cbd
.query_size
= query
->size
;
197 ret
= shm_attach(cbd
.query_shmid
, ATTACH_RW
, &query_sma
);
200 memcpy(query_sma
, query
->data
, query
->size
);
201 ret
= shm_detach(query_sma
);
204 /* prevent other children from interacting */
205 mutex_lock(child_mutex
);
206 /* prevent parent from messing with shm_callback_data. */
207 mutex_lock(callback_mutex
);
208 /* all three mutexes are locked, set parameters for callback */
209 *shm_callback_data
= cbd
;
211 mutex_unlock(callback_mutex
);
212 kill(getppid(), SIGUSR1
); /* wake up parent */
214 * At this time only the parent can run. It will execute our callback
215 * and unlock the result_mutex when ready to indicate that the child
216 * may use the result. So let's sleep on this mutex.
218 mutex_lock(result_mutex
);
219 /* No need to aquire the callback mutex again */
220 ret
= shm_callback_data
->sma_ret
;
221 if (ret
< 0) /* sma problem, callback might not have been executed */
222 goto unlock_child_mutex
;
223 if (shm_callback_data
->result_shmid
>= 0) { /* parent provided a result */
225 ret
= shm_attach(shm_callback_data
->result_shmid
, ATTACH_RO
,
228 if (result
) { /* copy result */
229 result
->size
= shm_callback_data
->result_size
;
230 result
->data
= para_malloc(result
->size
);
231 memcpy(result
->data
, sma
, result
->size
);
232 ret
= shm_detach(sma
);
234 PARA_ERROR_LOG("can not detach result\n");
236 PARA_WARNING_LOG("no result pointer\n");
238 PARA_ERROR_LOG("attach result failed: %d\n", ret
);
239 if (shm_destroy(shm_callback_data
->result_shmid
) < 0)
240 PARA_ERROR_LOG("destroy result failed\n");
241 } else { /* no result from callback */
243 PARA_WARNING_LOG("callback has no result\n");
248 ret
= shm_callback_data
->callback_ret
;
250 /* give other children a chance */
251 mutex_unlock(child_mutex
);
253 if (shm_destroy(cbd
.query_shmid
) < 0)
254 PARA_ERROR_LOG("%s\n", "shm destroy error");
255 PARA_DEBUG_LOG("callback_ret: %d\n", ret
);
260 * Send a callback request passing an options structure and an argument vector.
262 * \param options pointer to an arbitrary data structure.
263 * \param argc Argument count.
264 * \param argv Standard argument vector.
265 * \param f The callback function.
266 * \param result The result of the query is stored here.
268 * Some commands have a couple of options that are parsed in child context for
269 * syntactic correctness and are stored in a special options structure for that
270 * command. This function allows to pass such a structure together with a list
271 * of further arguments (often a list of audio files) to the parent process.
273 * \sa send_standard_callback_request(), send_callback_request().
275 int send_option_arg_callback_request(struct osl_object
*options
,
276 int argc
, const char **argv
, callback_function
*f
,
277 struct osl_object
*result
)
281 struct osl_object query
= {.size
= options
? options
->size
: 0};
283 for (i
= 0; i
< argc
; i
++)
284 query
.size
+= strlen(argv
[i
]) + 1;
285 query
.data
= para_malloc(query
.size
);
288 memcpy(query
.data
, options
->data
, options
->size
);
291 for (i
= 0; i
< argc
; i
++) {
292 strcpy(p
, argv
[i
]); /* OK */
293 p
+= strlen(argv
[i
]) + 1;
295 ret
= send_callback_request(f
, &query
, result
);
301 * Send a callback request with an argument vector only.
303 * \param argc The same meaning as in send_option_arg_callback_request().
304 * \param argv The same meaning as in send_option_arg_callback_request().
305 * \param f The same meaning as in send_option_arg_callback_request().
306 * \param result The same meaning as in send_option_arg_callback_request().
308 * This is similar to send_option_arg_callback_request(), but no options buffer
309 * is passed to the parent process.
311 * \return The return value of the underlying call to
312 * send_option_arg_callback_request().
314 int send_standard_callback_request(int argc
, const char **argv
,
315 callback_function
*f
, struct osl_object
*result
)
317 return send_option_arg_callback_request(NULL
, argc
, argv
, f
, result
);
321 * write input from fd to dynamically allocated char array,
322 * but maximal max_size byte. Return size.
324 static int fd2buf(int fd
, char **buf
, int max_size
)
326 const size_t chunk_size
= 1024;
331 *buf
= para_malloc(size
* sizeof(char));
333 while ((ret
= read(fd
, p
, chunk_size
)) > 0) {
335 if ((p
- *buf
) + chunk_size
>= size
) {
339 if (size
> max_size
) {
340 ret
= -E_INPUT_TOO_LARGE
;
343 tmp
= para_realloc(*buf
, size
);
344 p
= (p
- *buf
) + tmp
;
360 * Read from stdin, and send the result to the parent process.
362 * \param arg_obj Pointer to the arguments to \a f.
363 * \param f The callback function.
364 * \param max_len Don't read more than that many bytes from stdin.
365 * \param result The result of the query is stored here.
367 * This function is used by commands that wish to let para_server store
368 * arbitrary data specified by the user (for instance the add_blob family of
369 * commands). First, at most \a max_len bytes are read from stdin, the result
370 * is concatenated with the buffer given by \a arg_obj, and the combined buffer
371 * is made available to the parent process via shared memory.
373 * \return Negative on errors, the return value of the underlying call to
374 * send_callback_request() otherwise.
376 int stdin_command(struct osl_object
*arg_obj
, callback_function
*f
,
377 unsigned max_len
, struct osl_object
*result
)
381 struct osl_object query
;
382 int ret
= fd2buf(STDIN_FILENO
, &stdin_buf
, max_len
);
387 query
.size
= arg_obj
->size
+ stdin_len
;
388 query
.data
= para_malloc(query
.size
);
389 memcpy(query
.data
, arg_obj
->data
, arg_obj
->size
);
390 memcpy((char *)query
.data
+ arg_obj
->size
, stdin_buf
, stdin_len
);
392 ret
= send_callback_request(f
, &query
, result
);
398 * Open the audio file with highest score.
400 * \param afd Audio file data is returned here.
402 * This stores all information for streaming the "best" audio file
403 * in the \a afd structure.
405 * \return Positive on success, negative on errors.
407 * \sa close_audio_file(), open_and_update_audio_file().
409 int open_next_audio_file(struct audio_file_data
*afd
)
411 struct osl_row
*aft_row
;
414 ret
= score_get_best(&aft_row
, &afd
->score
);
417 ret
= open_and_update_audio_file(aft_row
, afd
);
424 * Free all resources which were allocated by open_next_audio_file().
426 * \param afd The structure previously filled in by open_next_audio_file().
428 * \return The return value of the underlying call to para_munmap().
430 * \sa open_next_audio_file().
432 int close_audio_file(struct audio_file_data
*afd
)
434 free(afd
->afhi
.chunk_table
);
435 return para_munmap(afd
->map
.data
, afd
->map
.size
);
439 static void play_loop(enum play_mode current_play_mode
)
442 struct audio_file_data afd
;
444 afd
.current_play_mode
= current_play_mode
;
445 for (i
= 0; i
< 0; i
++) {
446 ret
= open_next_audio_file(&afd
);
448 PARA_ERROR_LOG("failed to open next audio file: %d\n", ret
);
451 PARA_NOTICE_LOG("next audio file: %s, score: %li\n", afd
.path
, afd
.score
);
453 close_audio_file(&afd
);
459 static enum play_mode
init_admissible_files(void)
462 char *given_mood
, *given_playlist
;
464 given_mood
= "mood_that_was_given_at_the_command_line";
465 given_playlist
= "given_playlist";
468 ret
= mood_open(given_mood
);
471 PARA_WARNING_LOG("ignoring playlist %s\n",
473 return PLAY_MODE_MOOD
;
476 if (given_playlist
) {
477 ret
= playlist_open(given_playlist
);
479 return PLAY_MODE_PLAYLIST
;
481 ret
= mood_open(NULL
); /* open first available mood */
483 return PLAY_MODE_MOOD
;
484 mood_open(""); /* open dummy mood, always successful */
485 return PLAY_MODE_MOOD
;
488 static int setup_command_socket_or_die(void)
491 char *socket_name
= "/tmp/afs_command_socket";
492 struct sockaddr_un unix_addr
;
495 ret
= create_local_socket(socket_name
, &unix_addr
,
496 S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IWGRP
| S_IWOTH
);
499 if (listen(ret
, 5) < 0) {
500 PARA_EMERG_LOG("%s", "can not listen on socket\n");
503 PARA_INFO_LOG("listening on command socket %s (fd %d)\n", socket_name
,
508 static int server_socket
;
516 static void afs_shutdown(enum osl_close_flags flags
)
518 PARA_NOTICE_LOG("cleaning up\n");
519 score_shutdown(flags
);
520 attribute_shutdown(flags
);
523 moods_shutdown(flags
);
524 playlists_shutdown(flags
);
525 lyrics_shutdown(flags
);
526 images_shutdown(flags
);
530 static void signal_pre_select(struct sched
*s
, struct task
*t
)
532 struct signal_task
*st
= t
->private_data
;
534 para_fd_set(st
->fd
, &s
->rfds
, &s
->max_fileno
);
537 static void signal_post_select(struct sched
*s
, struct task
*t
)
539 struct signal_task
*st
= t
->private_data
;
541 if (!FD_ISSET(st
->fd
, &s
->rfds
))
543 st
->signum
= para_next_signal();
544 PARA_NOTICE_LOG("caught signal %d\n", st
->signum
);
546 if (st
->signum
== SIGUSR1
)
547 return; /* ignore SIGUSR1 */
548 afs_shutdown(OSL_MARK_CLEAN
);
549 t
->ret
= -E_SIGNAL_CAUGHT
;
552 static void register_signal_task(void)
554 static struct signal_task signal_task_struct
;
555 struct signal_task
*st
= &signal_task_struct
;
556 st
->fd
= para_signal_init();
557 PARA_INFO_LOG("signal pipe: fd %d\n", st
->fd
);
558 para_install_sighandler(SIGINT
);
559 para_install_sighandler(SIGTERM
);
560 para_install_sighandler(SIGPIPE
);
562 st
->task
.pre_select
= signal_pre_select
;
563 st
->task
.post_select
= signal_post_select
;
564 st
->task
.private_data
= st
;
565 sprintf(st
->task
.status
, "signal task");
566 register_task(&st
->task
);
569 static void command_pre_select(struct sched
*s
, struct task
*t
)
571 struct command_task
*ct
= t
->private_data
;
573 para_fd_set(ct
->fd
, &s
->rfds
, &s
->max_fileno
);
577 * On errors, negative value is written to fd.
578 * On success: If query produced a result, the result_shmid is written to fd.
579 * Otherwise, zero is written.
581 static int call_callback(int fd
, int query_shmid
)
583 void *query_shm
, *result_shm
;
584 struct callback_query
*cq
;
585 struct callback_result
*cr
;
586 struct osl_object query
, result
= {.data
= NULL
};
587 int result_shmid
= -1, ret
, ret2
;
589 ret
= shm_attach(query_shmid
, ATTACH_RO
, &query_shm
);
593 query
.data
= (char *)query_shm
+ sizeof(*cq
);
594 query
.size
= cq
->query_size
;
595 ret
= cq
->handler(&query
, &result
);
596 ret2
= shm_detach(query_shm
);
597 if (ret2
< 0 && ret
>= 0)
602 if (!result
.data
|| !result
.size
)
604 ret
= shm_new(result
.size
+ sizeof(struct callback_result
));
608 ret
= shm_attach(result_shmid
, ATTACH_RW
, &result_shm
);
612 cr
->result_size
= result
.size
;
613 memcpy(result_shm
+ sizeof(*cr
), result
.data
, result
.size
);
614 ret
= shm_detach(result_shm
);
620 ret2
= send_bin_buffer(fd
, (char *)ret
, sizeof(int));
621 if (ret
< 0 || ret2
< 0) {
622 if (result_shmid
>= 0)
623 if (shm_destroy(result_shmid
) < 0)
624 PARA_ERROR_LOG("destroy result failed\n");
631 static void command_post_select(struct sched
*s
, struct task
*t
)
633 struct command_task
*ct
= t
->private_data
;
634 struct sockaddr_un unix_addr
;
635 char buf
[sizeof(uint32_t) + sizeof(int)];
640 if (!FD_ISSET(ct
->fd
, &s
->rfds
))
642 t
->ret
= para_accept(ct
->fd
, &unix_addr
, sizeof(unix_addr
));
646 * The following errors may be caused by a malicious local user. So do
647 * not return an error in this case as this would terminate para_afs
651 t
->ret
= recv_bin_buffer(ct
->fd
, buf
, sizeof(buf
));
653 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t
->ret
));
657 if (t
->ret
!= sizeof(buf
)) {
658 PARA_NOTICE_LOG("short read (%d bytes, expected %d)\n",
659 t
->ret
, sizeof(buf
));
663 cookie
= *(uint32_t *)buf
;
664 if (cookie
!= ct
->cookie
) {
665 PARA_NOTICE_LOG("received invalid cookie(got %u, expected %u)\n",
666 (unsigned)cookie
, (unsigned)ct
->cookie
);
670 query_shmid
= *(int *)(buf
+ sizeof(cookie
));
671 if (query_shmid
< 0) {
672 PARA_WARNING_LOG("received invalid query shmid %d)\n",
677 t
->ret
= call_callback(fd
, query_shmid
);
679 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t
->ret
));
687 static void register_command_task(uint32_t cookie
)
689 static struct command_task command_task_struct
;
690 struct command_task
*ct
= &command_task_struct
;
691 ct
->fd
= setup_command_socket_or_die();
694 ct
->task
.pre_select
= command_pre_select
;
695 ct
->task
.post_select
= command_post_select
;
696 ct
->task
.private_data
= ct
;
697 sprintf(ct
->task
.status
, "command task");
698 register_task(&ct
->task
);
701 void register_tasks(uint32_t cookie
)
703 register_signal_task();
704 register_command_task(cookie
);
707 __noreturn
int afs_init(uint32_t cookie
, int socket_fd
)
711 enum play_mode current_play_mode
;
714 server_socket
= socket_fd
;
715 PARA_INFO_LOG("server_socket: %d, afs_socket_cookie: %u\n",
716 server_socket
, (unsigned) cookie
);
718 ret
= attribute_init(&afs_tables
[TBLNUM_ATTRIBUTES
]);
720 goto attribute_init_error
;
721 ret
= moods_init(&afs_tables
[TBLNUM_MOODS
]);
723 goto moods_init_error
;
724 ret
= playlists_init(&afs_tables
[TBLNUM_PLAYLIST
]);
726 goto playlists_init_error
;
727 ret
= lyrics_init(&afs_tables
[TBLNUM_LYRICS
]);
729 goto lyrics_init_error
;
730 ret
= images_init(&afs_tables
[TBLNUM_IMAGES
]);
732 goto images_init_error
;
733 ret
= score_init(&afs_tables
[TBLNUM_SCORES
]);
735 goto score_init_error
;
736 ret
= aft_init(&afs_tables
[TBLNUM_AUDIO_FILES
]);
740 current_play_mode
= init_admissible_files();
741 register_tasks(cookie
);
742 s
.default_timeout
.tv_sec
= 0;
743 s
.default_timeout
.tv_usec
= 99 * 1000;
747 ret
= shm_new(sizeof(struct callback_data
));
751 ret
= shm_attach(shmid
, ATTACH_RW
, &shm_area
);
754 shm_callback_data
= shm_area
;
758 callback_mutex
= ret
;
767 mutex_lock(result_mutex
);
770 score_shutdown(OSL_MARK_CLEAN
);
772 images_shutdown(OSL_MARK_CLEAN
);
774 lyrics_shutdown(OSL_MARK_CLEAN
);
776 playlists_shutdown(OSL_MARK_CLEAN
);
777 playlists_init_error
:
778 moods_shutdown(OSL_MARK_CLEAN
);
780 attribute_shutdown(OSL_MARK_CLEAN
);
781 attribute_init_error
:
785 static int create_all_tables(void)
789 for (i
= 0; i
< NUM_AFS_TABLES
; i
++) {
790 struct table_info
*ti
= afs_tables
+ i
;
792 if (ti
->flags
& TBLFLAG_SKIP_CREATE
)
794 ret
= osl_create_table(ti
->desc
);
801 /* TODO load tables after init */
802 static int com_init(__a_unused
int fd
, int argc
, const char **argv
)
806 return create_all_tables();
807 for (i
= 1; i
< argc
; i
++) {
808 for (j
= 0; j
< NUM_AFS_TABLES
; j
++) {
809 struct table_info
*ti
= afs_tables
+ j
;
811 if (ti
->flags
& TBLFLAG_SKIP_CREATE
)
813 if (strcmp(argv
[i
], ti
->desc
->name
))
815 PARA_NOTICE_LOG("creating table %s\n", argv
[i
]);
816 ret
= osl_create_table(ti
->desc
);
821 if (j
== NUM_AFS_TABLES
)
822 return -E_BAD_TABLE_NAME
;
827 /** Describes a command of para_server. */
829 /** The name of the command. */
831 /** The handler function. */
832 int (*handler
)(int fd
, int argc
, const char **argv
);
835 static struct command afs_cmds
[] = {
842 .handler
= com_addlyr
,
846 .handler
= com_addimg
,
850 .handler
= com_addmood
,
854 .handler
= com_addpl
,
858 .handler
= com_catlyr
,
862 .handler
= com_catimg
,
866 .handler
= com_mvimg
,
870 .handler
= com_mvlyr
,
874 .handler
= com_mvmood
,
882 .handler
= com_catmood
,
886 .handler
= com_catpl
,
890 .handler
= com_rmatt
,
898 .handler
= com_lsatt
,
902 .handler
= com_afs_ls
,
906 .handler
= com_lslyr
,
910 .handler
= com_lsimg
,
914 .handler
= com_lsmood
,
922 .handler
= com_setatt
,
926 .handler
= com_addatt
,
930 .handler
= com_afs_rm
,
934 .handler
= com_rmlyr
,
938 .handler
= com_rmimg
,
942 .handler
= com_rmmood
,
950 .handler
= com_touch
,
958 static void call_callback(void)
960 struct osl_object query
, result
= {.data
= NULL
};
963 shm_callback_data
->result_shmid
= -1; /* no result */
964 ret
= shm_attach(shm_callback_data
->query_shmid
, ATTACH_RW
,
968 query
.size
= shm_callback_data
->query_size
;
969 shm_callback_data
->callback_ret
= shm_callback_data
->handler(&query
,
971 if (result
.data
&& result
.size
) {
973 ret
= shm_new(result
.size
);
976 shm_callback_data
->result_shmid
= ret
;
977 shm_callback_data
->result_size
= result
.size
;
978 ret
= shm_attach(shm_callback_data
->result_shmid
, ATTACH_RW
, &sma
);
981 memcpy(sma
, result
.data
, result
.size
);
982 ret
= shm_detach(sma
);
984 PARA_ERROR_LOG("detach result failed\n");
991 if (shm_destroy(shm_callback_data
->result_shmid
) < 0)
992 PARA_ERROR_LOG("destroy result failed\n");
993 shm_callback_data
->result_shmid
= -1;
996 ret2
= shm_detach(query
.data
);
998 PARA_ERROR_LOG("detach query failed\n");
1004 PARA_ERROR_LOG("sma error %d\n", ret
);
1005 shm_callback_data
->sma_ret
= ret
;
1006 shm_callback_data
->handler
= NULL
;
1007 mutex_unlock(result_mutex
); /* wake up child */
1010 static int got_sigchld
;
1011 static void server_loop(int child_pid
)
1015 PARA_DEBUG_LOG("server pid: %d, child pid: %d\n",
1016 getpid(), child_pid
);
1018 mutex_lock(callback_mutex
);
1019 if (shm_callback_data
->handler
)
1021 mutex_unlock(callback_mutex
);
1025 mutex_destroy(result_mutex
);
1026 mutex_destroy(callback_mutex
);
1027 mutex_destroy(child_mutex
);
1028 afs_shutdown(OSL_MARK_CLEAN
);
1033 int main(int argc
, const char **argv
)
1035 int i
, ret
= -E_AFS_SYNTAX
;
1037 signal(SIGUSR1
, dummy
);
1038 signal(SIGCHLD
, sigchld_handler
);
1042 // ret = afs_init();
1044 PARA_EMERG_LOG("afs_init returned %d\n", ret
);
1054 for (i
= 0; cmd
[i
].name
; i
++) {
1055 if (strcmp(cmd
[i
].name
, argv
[1]))
1057 ret
= cmd
[i
].handler(1, argc
- 1 , argv
+ 1);
1061 PARA_ERROR_LOG("unknown command: %s\n", argv
[1]);
1065 PARA_ERROR_LOG("error %d\n", ret
);
1067 PARA_DEBUG_LOG("%s", "success\n");
1069 return ret
< 0? EXIT_FAILURE
: EXIT_SUCCESS
;