void FileWatcher :: unwatchfile(const char *filename) {
if(!g_filewatcher) g_filewatcher = new FileWatcherImpl();
set<FileInfo>::iterator it = FileInfo::cActiveFileInfo.find(FileInfo(filename));
if(it != FileInfo::cActiveFileInfo.end()) FileInfo::cActiveFileInfo.erase(it);
if(!inotifytools_remove_watch_by_filename(filename)) {
int err = inotifytools_error();
printf("Error: unwatchingfile %d\n", err);
return;
}
}
int del_monitor_dir_inotify(monitor_dirs *md, char *path)
{
debug_sys(LOG_NOTICE, "Delete dir inotify for %s\n", path);
/*
if (file_exist(path))
{
debug_sys(LOG_ERR, "Path %s should not exist\n", path);
return ERROR;
}
*/
del_monitor_dir(md, path);
inotifytools_remove_watch_by_filename(path);
return SUCC;
}
void watch_limit()
{
ENTER
verify((0 == mkdir(TEST_DIR, 0700)) || (EEXIST == errno));
INFO("Warning, this test may take a while\n");
#define INNER_LIMIT 16000
#define OUTER_LIMIT 5
verify(inotifytools_initialize());
inotifytools_initialize_stats();
for (int j = 0; j < OUTER_LIMIT; ++j)
{
char fn[1024];
int max = 0;
for (int i = 0; i < INNER_LIMIT; ++i)
{
snprintf(fn, 1023, "%s/%d", TEST_DIR, i);
int fd = creat(fn, 0700);
verify(-1 != fd);
verify(0 == close(fd));
int ret = inotifytools_watch_file(fn, IN_ALL_EVENTS);
verify(ret || inotifytools_error() == ENOSPC);
if (ret)
{
max = i + 1;
int wd = inotifytools_wd_from_filename(fn);
verify(wd > 0);
verify(!strcmp(fn, inotifytools_filename_from_wd(wd)));
}
}
compare(inotifytools_get_num_watches(), max);
for (int i = 0; i < max; ++i)
{
snprintf(fn, 1023, "%s/%d", TEST_DIR, i);
verify(inotifytools_remove_watch_by_filename(fn));
}
}
EXIT
}
void basic_watch_info()
{
ENTER
verify(inotifytools_initialize());
verify(inotifytools_watch_file("/", IN_CLOSE));
compare(inotifytools_wd_from_filename("/"), 1);
compare(inotifytools_wd_from_filename("foobar"), -1);
verify(!strcmp(inotifytools_filename_from_wd(1), "/"));
verify(inotifytools_remove_watch_by_filename("/"));
compare(inotifytools_wd_from_filename("/"), -1);
compare(inotifytools_filename_from_wd(1), 0);
verify(inotifytools_watch_file("/", IN_CLOSE));
compare(inotifytools_wd_from_filename("/"), 2);
compare(inotifytools_wd_from_filename("foobar"), -1);
verify(!strcmp(inotifytools_filename_from_wd(2), "/"));
verify(inotifytools_remove_watch_by_wd(2));
compare(inotifytools_wd_from_filename("/"), -1);
compare(inotifytools_filename_from_wd(2), 0);
EXIT
}
int main(int argc, char ** argv)
{
events = 0;
int timeout = 0;
int verbose = 0;
zero = 0;
int recursive = 0;
char * fromfile = 0;
sort = -1;
done = false;
char * regex = NULL;
char * iregex = NULL;
signal( SIGINT, handle_impatient_user );
// Parse commandline options, aborting if something goes wrong
if ( !parse_opts( &argc, &argv, &events, &timeout, &verbose, &zero, &sort,
&recursive, &fromfile, ®ex, &iregex ) ) {
return EXIT_FAILURE;
}
if (
(regex && !inotifytools_ignore_events_by_regex(regex, REG_EXTENDED) ) ||
(iregex && !inotifytools_ignore_events_by_regex(iregex, REG_EXTENDED|
REG_ICASE))
) {
fprintf(stderr, "Error in `exclude' regular expression.\n");
return EXIT_FAILURE;
}
if ( !inotifytools_initialize() ) {
fprintf(stderr, "Couldn't initialize inotify. Are you running Linux "
"2.6.13 or later, and was the\n"
"CONFIG_INOTIFY option enabled when your kernel was "
"compiled? If so, \n"
"something mysterious has gone wrong. Please e-mail "
PACKAGE_BUGREPORT "\n"
" and mention that you saw this message.\n");
return EXIT_FAILURE;
}
// Attempt to watch file
// If events is still 0, make it all events.
if ( !events )
events = IN_ALL_EVENTS;
FileList list = construct_path_list( argc, argv, fromfile );
if (0 == list.watch_files[0]) {
fprintf(stderr, "No files specified to watch!\n");
return EXIT_FAILURE;
}
unsigned int num_watches = 0;
unsigned int status;
fprintf( stderr, "Establishing watches...\n" );
int i;
for ( i = 0; list.watch_files[i]; ++i ) {
char const *this_file = list.watch_files[i];
if ( recursive && verbose ) {
fprintf( stderr, "Setting up watch(es) on %s\n", this_file );
}
if ( recursive ) {
status = inotifytools_watch_recursively_with_exclude(
this_file,
events,
list.exclude_files );
}
else {
status = inotifytools_watch_file( this_file, events );
}
if ( !status ) {
if ( inotifytools_error() == ENOSPC ) {
fprintf(stderr, "Failed to watch %s; upper limit on inotify "
"watches reached!\n", this_file );
fprintf(stderr, "Please increase the amount of inotify watches "
"allowed per user via `/proc/sys/fs/inotify/"
"max_user_watches'.\n");
}
else {
fprintf(stderr, "Failed to watch %s: %s\n", this_file,
strerror( inotifytools_error() ) );
}
return EXIT_FAILURE;
}
if ( recursive && verbose ) {
fprintf( stderr, "OK, %s is now being watched.\n", this_file );
}
}
num_watches = inotifytools_get_num_watches();
if ( verbose ) {
fprintf( stderr, "Total of %d watches.\n",
num_watches );
}
fprintf( stderr, "Finished establishing watches, now collecting statistics.\n" );
if ( timeout && verbose ) {
fprintf( stderr, "Will listen for events for %d seconds.\n", timeout );
}
signal( SIGINT, handle_signal );
signal( SIGHUP, handle_signal );
signal( SIGTERM, handle_signal );
if ( timeout ) {
signal( SIGALRM, handle_signal );
alarm( timeout );
}
signal( SIGUSR1, print_info_now );
inotifytools_initialize_stats();
// Now wait till we get event
struct inotify_event * event;
char * moved_from = 0;
do {
event = inotifytools_next_event( 0 );
if ( !event ) {
if ( !inotifytools_error() ) {
return EXIT_TIMEOUT;
}
else if ( inotifytools_error() != EINTR ) {
fprintf(stderr, "%s\n", strerror( inotifytools_error() ) );
return EXIT_FAILURE;
}
else {
continue;
}
}
// if we last had MOVED_FROM and don't currently have MOVED_TO,
// moved_from file must have been moved outside of tree - so unwatch it.
if ( moved_from && !(event->mask & IN_MOVED_TO) ) {
if ( !inotifytools_remove_watch_by_filename( moved_from ) ) {
fprintf( stderr, "Error removing watch on %s: %s\n",
moved_from, strerror(inotifytools_error()) );
}
free( moved_from );
moved_from = 0;
}
if ( recursive ) {
if ((event->mask & IN_CREATE) ||
(!moved_from && (event->mask & IN_MOVED_TO))) {
// New file - if it is a directory, watch it
static char * new_file;
nasprintf( &new_file, "%s%s",
inotifytools_filename_from_wd( event->wd ),
event->name );
if ( isdir(new_file) &&
!inotifytools_watch_recursively( new_file, events ) ) {
fprintf( stderr, "Couldn't watch new directory %s: %s\n",
new_file, strerror( inotifytools_error() ) );
}
free( new_file );
} // IN_CREATE
else if (event->mask & IN_MOVED_FROM) {
nasprintf( &moved_from, "%s%s/",
inotifytools_filename_from_wd( event->wd ),
event->name );
// if not watched...
if ( inotifytools_wd_from_filename(moved_from) == -1 ) {
free( moved_from );
moved_from = 0;
}
} // IN_MOVED_FROM
else if (event->mask & IN_MOVED_TO) {
if ( moved_from ) {
static char * new_name;
nasprintf( &new_name, "%s%s/",
inotifytools_filename_from_wd( event->wd ),
event->name );
inotifytools_replace_filename( moved_from, new_name );
free( moved_from );
moved_from = 0;
} // moved_from
}
}
} while ( !done );
return print_info();
}
int notify_removeWatch (char const * path) {
inotifytools_initialize ();
inotifytools_remove_watch_by_filename (path);
return 1;
}
int main(int argc, char ** argv)
{
int events = 0;
int orig_events;
bool monitor = false;
int quiet = 0;
unsigned long int timeout = 0;
int recursive = 0;
bool csv = false;
bool daemon = false;
bool syslog = false;
char * format = NULL;
char * timefmt = NULL;
char * fromfile = NULL;
char * outfile = NULL;
char * regex = NULL;
char * iregex = NULL;
pid_t pid;
int fd;
// Parse commandline options, aborting if something goes wrong
if ( !parse_opts(&argc, &argv, &events, &monitor, &quiet, &timeout,
&recursive, &csv, &daemon, &syslog, &format, &timefmt,
&fromfile, &outfile, ®ex, &iregex) ) {
return EXIT_FAILURE;
}
if ( !inotifytools_initialize() ) {
fprintf(stderr, "Couldn't initialize inotify. Are you running Linux "
"2.6.13 or later, and was the\n"
"CONFIG_INOTIFY option enabled when your kernel was "
"compiled? If so, \n"
"something mysterious has gone wrong. Please e-mail "
PACKAGE_BUGREPORT "\n"
" and mention that you saw this message.\n");
return EXIT_FAILURE;
}
if ( timefmt ) inotifytools_set_printf_timefmt( timefmt );
if (
(regex && !inotifytools_ignore_events_by_regex(regex, REG_EXTENDED) ) ||
(iregex && !inotifytools_ignore_events_by_regex(iregex, REG_EXTENDED|
REG_ICASE))
) {
fprintf(stderr, "Error in `exclude' regular expression.\n");
return EXIT_FAILURE;
}
if ( format ) validate_format(format);
// Attempt to watch file
// If events is still 0, make it all events.
if (events == 0)
events = IN_ALL_EVENTS;
orig_events = events;
if ( monitor && recursive ) {
events = events | IN_CREATE | IN_MOVED_TO | IN_MOVED_FROM;
}
FileList list = construct_path_list( argc, argv, fromfile );
if (0 == list.watch_files[0]) {
fprintf(stderr, "No files specified to watch!\n");
return EXIT_FAILURE;
}
// Daemonize - BSD double-fork approach
if ( daemon ) {
pid = fork();
if (pid < 0) {
fprintf(stderr, "Failed to fork1 whilst daemonizing!\n");
return EXIT_FAILURE;
}
if (pid > 0) {
_exit(0);
}
if (setsid() < 0) {
fprintf(stderr, "Failed to setsid whilst daemonizing!\n");
return EXIT_FAILURE;
}
signal(SIGHUP,SIG_IGN);
pid = fork();
if (pid < 0) {
fprintf(stderr, "Failed to fork2 whilst daemonizing!\n");
return EXIT_FAILURE;
}
if (pid > 0) {
_exit(0);
}
if (chdir("/") < 0) {
fprintf(stderr, "Failed to chdir whilst daemonizing!\n");
return EXIT_FAILURE;
}
// Redirect stdin from /dev/null
fd = open("/dev/null", O_RDONLY);
if (fd != fileno(stdin)) {
dup2(fd, fileno(stdin));
close(fd);
}
// Redirect stdout to a file
fd = open(outfile, O_WRONLY | O_CREAT | O_APPEND, 0600);
if (fd < 0) {
fprintf( stderr, "Failed to open output file %s\n", outfile );
return EXIT_FAILURE;
}
if (fd != fileno(stdout)) {
dup2(fd, fileno(stdout));
close(fd);
}
// Redirect stderr to /dev/null
fd = open("/dev/null", O_WRONLY);
if (fd != fileno(stderr)) {
dup2(fd, fileno(stderr));
close(fd);
}
} else if (outfile != NULL) { // Redirect stdout to a file if specified
fd = open(outfile, O_WRONLY | O_CREAT | O_APPEND, 0600);
if (fd < 0) {
fprintf( stderr, "Failed to open output file %s\n", outfile );
return EXIT_FAILURE;
}
if (fd != fileno(stdout)) {
dup2(fd, fileno(stdout));
close(fd);
}
}
if ( syslog ) {
openlog ("inotifywait", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_DAEMON);
}
if ( !quiet ) {
if ( recursive ) {
output_error( syslog, "Setting up watches. Beware: since -r "
"was given, this may take a while!\n" );
} else {
output_error( syslog, "Setting up watches.\n" );
}
}
// now watch files
for ( int i = 0; list.watch_files[i]; ++i ) {
char const *this_file = list.watch_files[i];
if ( (recursive && !inotifytools_watch_recursively_with_exclude(
this_file,
events,
list.exclude_files ))
|| (!recursive && !inotifytools_watch_file( this_file, events )) ){
if ( inotifytools_error() == ENOSPC ) {
output_error( syslog, "Failed to watch %s; upper limit on inotify "
"watches reached!\n", this_file );
output_error( syslog, "Please increase the amount of inotify watches "
"allowed per user via `/proc/sys/fs/inotify/"
"max_user_watches'.\n");
}
else {
output_error( syslog, "Couldn't watch %s: %s\n", this_file,
strerror( inotifytools_error() ) );
}
return EXIT_FAILURE;
}
}
if ( !quiet ) {
output_error( syslog, "Watches established.\n" );
}
// Now wait till we get event
struct inotify_event * event;
char * moved_from = 0;
do {
event = inotifytools_next_event( timeout );
if ( !event ) {
if ( !inotifytools_error() ) {
return EXIT_TIMEOUT;
}
else {
output_error( syslog, "%s\n", strerror( inotifytools_error() ) );
return EXIT_FAILURE;
}
}
if ( quiet < 2 && (event->mask & orig_events) ) {
if ( csv ) {
output_event_csv( event );
}
else if ( format ) {
inotifytools_printf( event, format );
}
else {
inotifytools_printf( event, "%w %,e %f\n" );
}
}
// if we last had MOVED_FROM and don't currently have MOVED_TO,
// moved_from file must have been moved outside of tree - so unwatch it.
if ( moved_from && !(event->mask & IN_MOVED_TO) ) {
if ( !inotifytools_remove_watch_by_filename( moved_from ) ) {
output_error( syslog, "Error removing watch on %s: %s\n",
moved_from, strerror(inotifytools_error()) );
}
free( moved_from );
moved_from = 0;
}
if ( monitor && recursive ) {
if ((event->mask & IN_CREATE) ||
(!moved_from && (event->mask & IN_MOVED_TO))) {
// New file - if it is a directory, watch it
static char * new_file;
nasprintf( &new_file, "%s%s",
inotifytools_filename_from_wd( event->wd ),
event->name );
if ( isdir(new_file) &&
!inotifytools_watch_recursively( new_file, events ) ) {
output_error( syslog, "Couldn't watch new directory %s: %s\n",
new_file, strerror( inotifytools_error() ) );
}
free( new_file );
} // IN_CREATE
else if (event->mask & IN_MOVED_FROM) {
nasprintf( &moved_from, "%s%s/",
inotifytools_filename_from_wd( event->wd ),
event->name );
// if not watched...
if ( inotifytools_wd_from_filename(moved_from) == -1 ) {
free( moved_from );
moved_from = 0;
}
} // IN_MOVED_FROM
else if (event->mask & IN_MOVED_TO) {
if ( moved_from ) {
static char * new_name;
nasprintf( &new_name, "%s%s/",
inotifytools_filename_from_wd( event->wd ),
event->name );
inotifytools_replace_filename( moved_from, new_name );
free( moved_from );
moved_from = 0;
} // moved_from
}
}
fflush( NULL );
} while ( monitor );
// If we weren't trying to listen for this event...
if ( (events & event->mask) == 0 ) {
// ...then most likely something bad happened, like IGNORE etc.
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
