flash_eraseall: implement -N

[oweals/busybox.git] / miscutils / inotifyd.c

diff --git a/miscutils/inotifyd.c b/miscutils/inotifyd.c
index fe429b63645e9fce8691448472b4938601737fa7..7a1a6a2e533442bb77e5e642206169a86c62d6a3 100644 (file)
--- a/miscutils/inotifyd.c
+++ b/miscutils/inotifyd.c
@@ -27,6 +27,34 @@
  * See below for mask names explanation.
  */
 
+//usage:#define inotifyd_trivial_usage
+//usage:       "PROG FILE1[:MASK]..."
+//usage:#define inotifyd_full_usage "\n\n"
+//usage:       "Run PROG on filesystem changes."
+//usage:     "\nWhen a filesystem event matching MASK occurs on FILEn,"
+//usage:     "\nPROG ACTUAL_EVENTS FILEn [SUBFILE] is run."
+//usage:     "\nIf PROG is -, events are sent to stdout."
+//usage:     "\nEvents:"
+//usage:     "\n       a       File is accessed"
+//usage:     "\n       c       File is modified"
+//usage:     "\n       e       Metadata changed"
+//usage:     "\n       w       Writable file is closed"
+//usage:     "\n       0       Unwritable file is closed"
+//usage:     "\n       r       File is opened"
+//usage:     "\n       D       File is deleted"
+//usage:     "\n       M       File is moved"
+//usage:     "\n       u       Backing fs is unmounted"
+//usage:     "\n       o       Event queue overflowed"
+//usage:     "\n       x       File can't be watched anymore"
+//usage:     "\nIf watching a directory:"
+//usage:     "\n       m       Subfile is moved into dir"
+//usage:     "\n       y       Subfile is moved out of dir"
+//usage:     "\n       n       Subfile is created"
+//usage:     "\n       d       Subfile is deleted"
+//usage:     "\n"
+//usage:     "\ninotifyd waits for PROG to exit."
+//usage:     "\nWhen x event happens for all FILEs, inotifyd exits."
+
 #include "libbb.h"
 #include <sys/inotify.h>
 
@@ -150,12 +178,20 @@ int inotifyd_main(int argc, char **argv)
                                                *s++ = mask_names[i];
                                }
                                *s = '\0';
-//                             bb_error_msg("exec %s %08X\t%s\t%s\t%s", args[0],
-//                                     ie->mask, events, watches[ie->wd], ie->len ? ie->name : "");
-                               args[1] = events;
-                               args[2] = watches[ie->wd];
-                               args[3] = ie->len ? ie->name : NULL;
-                               spawn_and_wait((char **)args);
+                               if (LONE_CHAR(args[0], '-')) {
+                                       /* "inotifyd - FILE": built-in echo */
+                                       printf(ie->len ? "%s\t%s\t%s\n" : "%s\t%s\n", events,
+                                                       watches[ie->wd],
+                                                       ie->name);
+                                       fflush(stdout);
+                               } else {
+//                                     bb_error_msg("exec %s %08X\t%s\t%s\t%s", args[0],
+//                                             ie->mask, events, watches[ie->wd], ie->len ? ie->name : "");
+                                       args[1] = events;
+                                       args[2] = watches[ie->wd];
+                                       args[3] = ie->len ? ie->name : NULL;
+                                       spawn_and_wait((char **)args);
+                               }
                                // we are done if all files got final x event
                                if (ie->mask & 0x8000) {
                                        if (--argc <= 0)