15 #include "../../config.h"
17 #include "inotifytools_p.h"
25 #include <sys/select.h>
26 #include <sys/types.h>
28 #include <sys/ioctl.h>
35 #include "inotifytools/inotify.h"
123 #define MAX_EVENTS 4096
124 #define INOTIFY_PROCDIR "/proc/sys/fs/inotify/"
125 #define WATCHES_SIZE_PATH INOTIFY_PROCDIR "max_user_watches"
126 #define QUEUE_SIZE_PATH INOTIFY_PROCDIR "max_queued_watches"
127 #define INSTANCES_PATH INOTIFY_PROCDIR "max_user_instances"
129 static int inotify_fd;
130 static unsigned num_access;
131 static unsigned num_modify;
132 static unsigned num_attrib;
133 static unsigned num_close_nowrite;
134 static unsigned num_close_write;
135 static unsigned num_open;
136 static unsigned num_move_self;
137 static unsigned num_moved_to;
138 static unsigned num_moved_from;
139 static unsigned num_create;
140 static unsigned num_delete;
141 static unsigned num_delete_self;
142 static unsigned num_unmount;
143 static unsigned num_total;
144 static int collect_stats = 0;
146 struct rbtree *tree_wd = 0;
147 struct rbtree *tree_filename = 0;
148 static int error = 0;
150 static char* timefmt = 0;
151 static regex_t* regex = 0;
153 static int invert_regexp = 0;
155 static int isdir(
char const * path );
156 void record_stats(
struct inotify_event
const * event );
157 int onestr_to_event(
char const * event);
176 #define niceassert(cond,mesg) _niceassert((long)cond, __LINE__, __FILE__, \
179 #define nasprintf(...) niceassert( -1 != asprintf(__VA_ARGS__), "out of memory")
198 static void _niceassert(
long cond,
int line,
char const * file,
199 char const * condstr,
char const * mesg ) {
203 fprintf(stderr,
"%s:%d assertion ( %s ) failed: %s\n", file, line,
207 fprintf(stderr,
"%s:%d assertion ( %s ) failed.\n", file, line, condstr);
220 char * chrtostr(
char ch) {
221 static char str[2] = {
'\0',
'\0' };
229 int read_num_from_file(
char * filename,
int * num ) {
230 FILE * file = fopen( filename,
"r" );
236 if ( EOF == fscanf( file,
"%d", num ) ) {
241 niceassert( 0 == fclose( file ), 0 );
246 int wd_compare(
const void *d1,
const void *d2,
const void *config) {
247 if (!d1 || !d2)
return d1 - d2;
248 return ((watch*)d1)->wd - ((watch*)d2)->wd;
251 int filename_compare(
const void *d1,
const void *d2,
const void *config) {
252 if (!d1 || !d2)
return d1 - d2;
253 return strcmp(((watch*)d1)->filename, ((watch*)d2)->filename);
259 watch *watch_from_wd(
int wd ) {
262 return (watch*)rbfind(&w, tree_wd);
268 watch *watch_from_filename(
char const *filename ) {
270 w.filename = (
char*)filename;
271 return (watch*)rbfind(&w, tree_filename);
288 inotify_fd = inotify_init();
289 if (inotify_fd < 0) {
296 tree_wd = rbinit(wd_compare, 0);
297 tree_filename = rbinit(filename_compare, 0);
306 void destroy_watch(watch *w) {
307 if (w->filename) free(w->filename);
314 void cleanup_tree(
const void *nodep,
316 const int depth,
void* arg) {
317 if (which != endorder && which != leaf)
return;
318 watch *w = (watch*)nodep;
343 rbwalk(tree_wd, cleanup_tree, 0);
344 rbdestroy(tree_wd); tree_wd = 0;
345 rbdestroy(tree_filename); tree_filename = 0;
351 void empty_stats(
const void *nodep,
353 const int depth,
void *arg) {
354 if (which != endorder && which != leaf)
return;
355 watch *w = (watch*)nodep;
359 w->hit_close_nowrite = 0;
360 w->hit_close_write = 0;
362 w->hit_move_self = 0;
363 w->hit_moved_from = 0;
367 w->hit_delete_self = 0;
375 struct replace_filename_data {
376 char const *old_name;
377 char const *new_name;
384 void replace_filename(
const void *nodep,
const VISIT which,
const int depth,
385 const struct replace_filename_data *data) {
386 if (which != endorder && which != leaf)
return;
387 watch *w = (watch*)nodep;
389 if ( 0 == strncmp( data->old_name, w->filename, data->old_len ) ) {
390 nasprintf( &name,
"%s%s", data->new_name, &(w->filename[data->old_len]) );
391 if (!strcmp( w->filename, data->new_name )) {
394 rbdelete(w, tree_filename);
397 rbsearch(w, tree_filename);
405 void get_num(
const void *nodep,
407 const int depth,
void *arg) {
408 if (which != endorder && which != leaf)
return;
426 niceassert( init,
"inotifytools_initialize not called yet" );
430 rbwalk(tree_wd, empty_stats, 0);
436 num_close_nowrite = 0;
479 if ( strchr(
"_" "abcdefghijklmnopqrstuvwxyz"
480 "ABCDEFGHIJKLMNOPQRSTUVWXYZ", sep ) ) {
485 char * event1, * event2;
486 static const size_t eventstr_size = 4096;
487 char eventstr[eventstr_size];
490 if ( !event || !event[0] )
return 0;
492 event1 = (
char *)event;
493 event2 = strchr( event1, sep );
494 while ( event1 && event1[0] ) {
496 len = event2 - event1;
497 niceassert(len < eventstr_size,
498 "malformed event string (very long)");
501 len = strlen(event1);
503 if (len > eventstr_size - 1)
504 len = eventstr_size - 1;
506 if (event2 || len == eventstr_size - 1) {
507 strncpy(eventstr, event1, len);
509 strcpy(eventstr, event1);
514 ret1 = onestr_to_event( eventstr );
515 if ( 0 == ret1 || -1 == ret1 ) {
522 if ( event1 && event1[0] ) {
526 if ( !event1[0] )
return 0;
527 event2 = strchr( event1, sep );
572 int onestr_to_event(
char const * event)
577 if ( !event || !event[0] )
579 else if ( 0 == strcasecmp(event,
"ACCESS") )
581 else if ( 0 == strcasecmp(event,
"MODIFY") )
583 else if ( 0 == strcasecmp(event,
"ATTRIB") )
585 else if ( 0 == strcasecmp(event,
"CLOSE_WRITE") )
586 ret = IN_CLOSE_WRITE;
587 else if ( 0 == strcasecmp(event,
"CLOSE_NOWRITE") )
588 ret = IN_CLOSE_NOWRITE;
589 else if ( 0 == strcasecmp(event,
"OPEN") )
591 else if ( 0 == strcasecmp(event,
"MOVED_FROM") )
593 else if ( 0 == strcasecmp(event,
"MOVED_TO") )
595 else if ( 0 == strcasecmp(event,
"CREATE") )
597 else if ( 0 == strcasecmp(event,
"DELETE") )
599 else if ( 0 == strcasecmp(event,
"DELETE_SELF") )
600 ret = IN_DELETE_SELF;
601 else if ( 0 == strcasecmp(event,
"UNMOUNT") )
603 else if ( 0 == strcasecmp(event,
"Q_OVERFLOW") )
605 else if ( 0 == strcasecmp(event,
"IGNORED") )
607 else if ( 0 == strcasecmp(event,
"CLOSE") )
609 else if ( 0 == strcasecmp(event,
"MOVE_SELF") )
611 else if ( 0 == strcasecmp(event,
"MOVE") )
613 else if ( 0 == strcasecmp(event,
"ISDIR") )
615 else if ( 0 == strcasecmp(event,
"ONESHOT") )
617 else if ( 0 == strcasecmp(event,
"ALL_EVENTS") )
674 static char ret[1024];
678 if ( IN_ACCESS & events ) {
679 strcat( ret, chrtostr(sep) );
680 strcat( ret,
"ACCESS" );
682 if ( IN_MODIFY & events ) {
683 strcat( ret, chrtostr(sep) );
684 strcat( ret,
"MODIFY" );
686 if ( IN_ATTRIB & events ) {
687 strcat( ret, chrtostr(sep) );
688 strcat( ret,
"ATTRIB" );
690 if ( IN_CLOSE_WRITE & events ) {
691 strcat( ret, chrtostr(sep) );
692 strcat( ret,
"CLOSE_WRITE" );
694 if ( IN_CLOSE_NOWRITE & events ) {
695 strcat( ret, chrtostr(sep) );
696 strcat( ret,
"CLOSE_NOWRITE" );
698 if ( IN_OPEN & events ) {
699 strcat( ret, chrtostr(sep) );
700 strcat( ret,
"OPEN" );
702 if ( IN_MOVED_FROM & events ) {
703 strcat( ret, chrtostr(sep) );
704 strcat( ret,
"MOVED_FROM" );
706 if ( IN_MOVED_TO & events ) {
707 strcat( ret, chrtostr(sep) );
708 strcat( ret,
"MOVED_TO" );
710 if ( IN_CREATE & events ) {
711 strcat( ret, chrtostr(sep) );
712 strcat( ret,
"CREATE" );
714 if ( IN_DELETE & events ) {
715 strcat( ret, chrtostr(sep) );
716 strcat( ret,
"DELETE" );
718 if ( IN_DELETE_SELF & events ) {
719 strcat( ret, chrtostr(sep) );
720 strcat( ret,
"DELETE_SELF" );
722 if ( IN_UNMOUNT & events ) {
723 strcat( ret, chrtostr(sep) );
724 strcat( ret,
"UNMOUNT" );
726 if ( IN_Q_OVERFLOW & events ) {
727 strcat( ret, chrtostr(sep) );
728 strcat( ret,
"Q_OVERFLOW" );
730 if ( IN_IGNORED & events ) {
731 strcat( ret, chrtostr(sep) );
732 strcat( ret,
"IGNORED" );
734 if ( IN_CLOSE & events ) {
735 strcat( ret, chrtostr(sep) );
736 strcat( ret,
"CLOSE" );
738 if ( IN_MOVE_SELF & events ) {
739 strcat( ret, chrtostr(sep) );
740 strcat( ret,
"MOVE_SELF" );
742 if ( IN_ISDIR & events ) {
743 strcat( ret, chrtostr(sep) );
744 strcat( ret,
"ISDIR" );
746 if ( IN_ONESHOT & events ) {
747 strcat( ret, chrtostr(sep) );
748 strcat( ret,
"ONESHOT" );
752 if (ret[0] ==
'\0') {
753 niceassert( -1 != sprintf( ret,
"%c0x%08x", sep, events ), 0 );
780 niceassert( init,
"inotifytools_initialize not called yet" );
781 watch *w = watch_from_wd(wd);
803 niceassert( init,
"inotifytools_initialize not called yet" );
804 watch *w = watch_from_filename(filename);
824 niceassert( init,
"inotifytools_initialize not called yet" );
825 watch *w = watch_from_wd(wd);
827 if (w->filename) free(w->filename);
828 w->filename = strdup(filename);
846 char const * newname ) {
847 watch *w = watch_from_filename(oldname);
849 if (w->filename) free(w->filename);
850 w->filename = strdup(newname);
876 char const * newname ) {
877 if ( !oldname || !newname )
return;
878 struct replace_filename_data data;
879 data.old_name = oldname;
880 data.new_name = newname;
881 data.old_len = strlen(oldname);
882 rbwalk(tree_filename, (
void *)replace_filename, (
void *)&data);
888 int remove_inotify_watch(watch *w) {
890 int status = inotify_rm_watch( inotify_fd, w->wd );
892 fprintf(stderr,
"Failed to remove watch on %s: %s\n", w->filename,
903 watch *create_watch(
int wd,
char *filename) {
904 if ( wd <= 0 || !filename)
return 0;
906 watch *w = (watch*)calloc(1,
sizeof(watch));
908 w->filename = strdup(filename);
909 rbsearch(w, tree_wd);
910 rbsearch(w, tree_filename);
927 niceassert( init,
"inotifytools_initialize not called yet" );
928 watch *w = watch_from_wd(wd);
931 if (!remove_inotify_watch(w))
return 0;
932 rbdelete(w, tree_wd);
933 rbdelete(w, tree_filename);
950 niceassert( init,
"inotifytools_initialize not called yet" );
951 watch *w = watch_from_filename(filename);
954 if (!remove_inotify_watch(w))
return 0;
955 rbdelete(w, tree_wd);
956 rbdelete(w, tree_filename);
973 static char const * filenames[2];
974 filenames[0] = filename;
995 niceassert( init,
"inotifytools_initialize not called yet" );
999 for ( i = 0; filenames[i]; ++i ) {
1001 wd = inotify_add_watch( inotify_fd, filenames[i], events );
1008 fprintf( stderr,
"Failed to watch %s: returned wd was %d "
1009 "(expected -1 or >0 )", filenames[i], wd );
1017 if ( !isdir(filenames[i])
1018 || filenames[i][strlen(filenames[i])-1] ==
'/') {
1019 filename = strdup(filenames[i]);
1022 nasprintf( &filename,
"%s/", filenames[i] );
1024 create_watch(wd, filename);
1111 niceassert( init,
"inotifytools_initialize not called yet" );
1112 niceassert( num_events <= MAX_EVENTS,
"too many events requested" );
1114 if ( num_events < 1 )
return NULL;
1116 static struct inotify_event event[MAX_EVENTS];
1117 static struct inotify_event * ret;
1118 static int first_byte = 0;
1119 static ssize_t bytes;
1121 static struct nstring match_name;
1122 static char match_name_string[MAX_STRLEN+1];
1124 #define RETURN(A) {\
1126 inotifytools_snprintf(&match_name, MAX_STRLEN, A, "%w%f");\
1127 memcpy(&match_name_string, &match_name.buf, match_name.len);\
1128 match_name_string[match_name.len] = '\0';\
1129 if (0 == regexec(regex, match_name_string, 0, 0, 0)) {\
1130 if (!invert_regexp)\
1137 if ( collect_stats ) {\
1148 if ( first_byte != 0
1149 && first_byte <= (
int)(bytes -
sizeof(
struct inotify_event)) ) {
1151 ret = (
struct inotify_event *)((
char *)&
event[0] + first_byte);
1152 first_byte +=
sizeof(
struct inotify_event) + ret->len;
1156 if ( first_byte == bytes ) {
1159 else if ( first_byte > bytes ) {
1166 niceassert( (
long)((
char *)&event[0] +
1167 sizeof(
struct inotify_event) +
1168 event[0].len) <= (
long)ret,
1169 "extremely unlucky user, death imminent" );
1171 bytes = (
char *)&event[0] + bytes - (
char *)ret;
1172 memcpy( &event[0], ret, bytes );
1179 else if ( first_byte == 0 ) {
1184 static ssize_t this_bytes;
1185 static unsigned int bytes_to_read;
1187 static fd_set read_fds;
1189 static struct timeval read_timeout;
1190 read_timeout.tv_sec = timeout;
1191 read_timeout.tv_usec = 0;
1192 static struct timeval * read_timeout_ptr;
1193 read_timeout_ptr = ( timeout < 0 ? NULL : &read_timeout );
1196 FD_SET(inotify_fd, &read_fds);
1197 rc = select(inotify_fd + 1, &read_fds,
1198 NULL, NULL, read_timeout_ptr);
1204 else if ( rc == 0 ) {
1211 rc = ioctl( inotify_fd, FIONREAD, &bytes_to_read );
1213 bytes_to_read <
sizeof(
struct inotify_event)*num_events );
1220 this_bytes = read(inotify_fd, &event[0] + bytes,
1221 sizeof(
struct inotify_event)*MAX_EVENTS - bytes);
1222 if ( this_bytes < 0 ) {
1226 if ( this_bytes == 0 ) {
1227 fprintf(stderr,
"Inotify reported end-of-file. Possibly too many "
1228 "events occurred at once.\n");
1231 bytes += this_bytes;
1234 first_byte =
sizeof(
struct inotify_event) + ret->len;
1235 niceassert( first_byte <= bytes,
"ridiculously long filename, things will "
1236 "almost certainly screw up." );
1237 if ( first_byte == bytes ) {
1308 char const ** exclude_list ) {
1309 niceassert( init,
"inotifytools_initialize not called yet" );
1314 dir = opendir( path );
1317 if ( errno == ENOTDIR ) {
1326 if ( path[strlen(path)-1] !=
'/' ) {
1327 nasprintf( &my_path,
"%s/", path );
1330 my_path = (
char *)path;
1333 static struct dirent * ent;
1335 static struct stat64 my_stat;
1336 ent = readdir( dir );
1339 if ( (0 != strcmp( ent->d_name,
"." )) &&
1340 (0 != strcmp( ent->d_name,
".." )) ) {
1341 nasprintf(&next_file,
"%s%s", my_path, ent->d_name);
1342 if ( -1 == lstat64( next_file, &my_stat ) ) {
1345 if ( errno != EACCES ) {
1347 if ( my_path != path ) free( my_path );
1352 else if ( S_ISDIR( my_stat.st_mode ) &&
1353 !S_ISLNK( my_stat.st_mode )) {
1355 nasprintf(&next_file,
"%s%s/", my_path, ent->d_name);
1356 static unsigned int no_watch;
1357 static char const ** exclude_entry;
1360 for (exclude_entry = exclude_list;
1361 exclude_entry && *exclude_entry && !no_watch;
1363 static int exclude_length;
1365 exclude_length = strlen(*exclude_entry);
1366 if ((*exclude_entry)[exclude_length-1] ==
'/') {
1369 if ( strlen(next_file) == (
unsigned)(exclude_length + 1) &&
1370 !strncmp(*exclude_entry, next_file, exclude_length)) {
1382 if ( !status && (EACCES != error) && (ENOENT != error) &&
1383 (ELOOP != error) ) {
1385 if ( my_path != path ) free( my_path );
1396 ent = readdir( dir );
1403 if ( my_path != path ) free( my_path );
1410 void record_stats(
struct inotify_event
const * event ) {
1412 watch *w = watch_from_wd(event->wd);
1414 if ( IN_ACCESS & event->mask ) {
1418 if ( IN_MODIFY & event->mask ) {
1422 if ( IN_ATTRIB & event->mask ) {
1426 if ( IN_CLOSE_WRITE & event->mask ) {
1427 ++w->hit_close_write;
1430 if ( IN_CLOSE_NOWRITE & event->mask ) {
1431 ++w->hit_close_nowrite;
1432 ++num_close_nowrite;
1434 if ( IN_OPEN & event->mask ) {
1438 if ( IN_MOVED_FROM & event->mask ) {
1439 ++w->hit_moved_from;
1442 if ( IN_MOVED_TO & event->mask ) {
1446 if ( IN_CREATE & event->mask ) {
1450 if ( IN_DELETE & event->mask ) {
1454 if ( IN_DELETE_SELF & event->mask ) {
1455 ++w->hit_delete_self;
1458 if ( IN_UNMOUNT & event->mask ) {
1462 if ( IN_MOVE_SELF & event->mask ) {
1472 unsigned int *stat_ptr(watch *w,
int event)
1474 if ( IN_ACCESS == event )
1475 return &w->hit_access;
1476 if ( IN_MODIFY == event )
1477 return &w->hit_modify;
1478 if ( IN_ATTRIB == event )
1479 return &w->hit_attrib;
1480 if ( IN_CLOSE_WRITE == event )
1481 return &w->hit_close_write;
1482 if ( IN_CLOSE_NOWRITE == event )
1483 return &w->hit_close_nowrite;
1484 if ( IN_OPEN == event )
1485 return &w->hit_open;
1486 if ( IN_MOVED_FROM == event )
1487 return &w->hit_moved_from;
1488 if ( IN_MOVED_TO == event )
1489 return &w->hit_moved_to;
1490 if ( IN_CREATE == event )
1491 return &w->hit_create;
1492 if ( IN_DELETE == event )
1493 return &w->hit_delete;
1494 if ( IN_DELETE_SELF == event )
1495 return &w->hit_delete_self;
1496 if ( IN_UNMOUNT == event )
1497 return &w->hit_unmount;
1498 if ( IN_MOVE_SELF == event )
1499 return &w->hit_move_self;
1501 return &w->hit_total;
1521 if (!collect_stats)
return -1;
1523 watch *w = watch_from_wd(wd);
1525 unsigned int *i = stat_ptr(w, event);
1544 if (!collect_stats)
return -1;
1545 if ( IN_ACCESS == event )
1547 if ( IN_MODIFY == event )
1549 if ( IN_ATTRIB == event )
1551 if ( IN_CLOSE_WRITE == event )
1552 return num_close_write;
1553 if ( IN_CLOSE_NOWRITE == event )
1554 return num_close_nowrite;
1555 if ( IN_OPEN == event )
1557 if ( IN_MOVED_FROM == event )
1558 return num_moved_from;
1559 if ( IN_MOVED_TO == event )
1560 return num_moved_to;
1561 if ( IN_CREATE == event )
1563 if ( IN_DELETE == event )
1565 if ( IN_DELETE_SELF == event )
1566 return num_delete_self;
1567 if ( IN_UNMOUNT == event )
1569 if ( IN_MOVE_SELF == event )
1570 return num_move_self;
1600 filename ), event );
1620 static int isdir(
char const * path ) {
1621 static struct stat64 my_stat;
1623 if ( -1 == lstat64( path, &my_stat ) ) {
1624 if (errno == ENOENT)
return 0;
1625 fprintf(stderr,
"Stat failed on %s: %s\n", path, strerror(errno));
1629 return S_ISDIR( my_stat.st_mode ) && !S_ISLNK( my_stat.st_mode );
1641 rbwalk(tree_filename, get_num, (
void*)&ret);
1742 if ( -1 != ret ) fwrite( out.
buf,
sizeof(
char), out.
len, file );
1854 struct inotify_event* event,
char* fmt ) {
1855 static char * filename, * eventname, * eventstr;
1856 static unsigned int i, ind;
1858 static char timestr[MAX_STRLEN];
1861 if ( event->len > 0 ) {
1862 eventname =
event->name;
1871 if ( !fmt || 0 == strlen(fmt) ) {
1875 if ( strlen(fmt) > MAX_STRLEN || size > MAX_STRLEN) {
1881 for ( i = 0; i < strlen(fmt) &&
1882 (int)ind < size - 1; ++i ) {
1883 if ( fmt[i] !=
'%' ) {
1884 out->
buf[ind++] = fmt[i];
1888 if ( i == strlen(fmt) - 1 ) {
1897 out->
buf[ind++] =
'%';
1903 out->
buf[ind++] =
'\0';
1909 out->
buf[ind++] =
'\n';
1916 strncpy( &out->
buf[ind], filename, size - ind );
1917 ind += strlen(filename);
1925 strncpy( &out->
buf[ind], eventname, size - ind );
1926 ind += strlen(eventname);
1933 ind += snprintf( &out->
buf[ind], size-ind,
"%x", event->cookie);
1940 strncpy( &out->
buf[ind], eventstr, size - ind );
1941 ind += strlen(eventstr);
1951 if (0 >= strftime(timestr, MAX_STRLEN - 1,
1953 localtime_r(&now, &now_tm))) {
1963 strncpy( &out->
buf[ind], timestr, size - ind );
1964 ind += strlen(timestr);
1970 if ( i < strlen(fmt) - 2 && fmt[i+2] ==
'e' ) {
1972 strncpy( &out->
buf[ind], eventstr, size - ind );
1973 ind += strlen(eventstr);
1979 if ( ind < MAX_STRLEN ) out->
buf[ind++] =
'%';
1980 if ( ind < MAX_STRLEN ) out->
buf[ind++] = ch1;
2011 if ( !read_num_from_file( QUEUE_SIZE_PATH, &ret ) )
return -1;
2026 if ( !read_num_from_file( INSTANCES_PATH, &ret ) )
return -1;
2041 if ( !read_num_from_file( WATCHES_SIZE_PATH, &ret ) )
return -1;
2058 static int do_ignore_events_by_regex(
char const *pattern,
int flags,
int invert ) {
2068 if (regex) { regfree(regex); }
2069 else { regex = (regex_t *)malloc(
sizeof(regex_t)); }
2071 invert_regexp = invert;
2072 int ret = regcomp(regex, pattern, flags | REG_NOSUB);
2073 if (0 == ret)
return 1;
2094 return do_ignore_events_by_regex(pattern, flags, 0);
2109 return do_ignore_events_by_regex(pattern, flags, 1);
2112 int event_compare(
const void *p1,
const void *p2,
const void *config)
2114 if (!p1 || !p2)
return p1 - p2;
2116 long sort_event = (long)config;
2117 if (sort_event == -1) {
2120 }
else if (sort_event < 0) {
2121 sort_event = -sort_event;
2124 unsigned int *i1 = stat_ptr((watch*)p1, sort_event);
2125 unsigned int *i2 = stat_ptr((watch*)p2, sort_event);
2126 if (0 == *i1 - *i2) {
2127 return ((watch*)p1)->wd - ((watch*)p2)->wd;
2135 struct rbtree *inotifytools_wd_sorted_by_event(
int sort_event)
2137 struct rbtree *ret = rbinit(event_compare, (
void*)(uintptr_t)sort_event);
2138 RBLIST *all = rbopenlist(tree_wd);
2139 void const *p = rbreadlist(all);
2141 void const *r = rbsearch(p, ret);
2142 niceassert((
int)(r == p),
"Couldn't insert watch into new tree");
2143 p = rbreadlist(all);
This structure holds string that can contain any charater including NULL.