add find's "-mmin" option. configurable.

3 files changed, 44 insertions, 2 deletions

diff --git a/findutils/Config.in b/findutils/Config.in
index 3c28ec03a..050fe901d 100644
--- a/findutils/Config.in
+++ b/findutils/Config.in
@@ -17,7 +17,15 @@ config CONFIG_FEATURE_FIND_MTIME
         depends on CONFIG_FIND
         help
           Allow searching based on the modification time of
-          files.
+          files, in days.
+
+config CONFIG_FEATURE_FIND_MMIN
+        bool "  Enable modified time matching (-min) option"
+        default y
+        depends on CONFIG_FIND
+        help
+          Allow searching based on the modification time of
+          files, in minutes.
 
 config CONFIG_FEATURE_FIND_PERM
         bool "  Enable permissions matching (-perm) option"
diff --git a/findutils/find.c b/findutils/find.c
index 75ed4e208..603c20643 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -53,6 +53,11 @@ static char mtime_char;
 static int mtime_days;
 #endif
 
+#ifdef CONFIG_FEATURE_FIND_MMIN
+static char mmin_char;
+static int mmin_mins;
+#endif
+
 #ifdef CONFIG_FEATURE_FIND_XDEV
 static dev_t *xdev_dev;
 static int xdev_count = 0;
@@ -109,6 +114,17 @@ static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
                         goto no_match;
         }
 #endif
+#ifdef CONFIG_FEATURE_FIND_MMIN
+        if (mmin_char != 0) {
+                time_t file_age = time(NULL) - statbuf->st_mtime;
+                time_t mmin_secs = mmin_mins * 60;
+                if (!((isdigit(mmin_char) && file_age >= mmin_secs &&
+                                                file_age < mmin_secs + 60) ||
+                                (mmin_char == '+' && file_age >= mmin_secs + 60) ||
+                                (mmin_char == '-' && file_age < mmin_secs)))
+                        goto no_match;
+        }
+#endif
 #ifdef CONFIG_FEATURE_FIND_XDEV
         if (xdev_count) {
                 int i;
@@ -239,6 +255,17 @@ int find_main(int argc, char **argv)
                         if ((mtime_char = argv[i][0]) == '-')
                                 mtime_days = -mtime_days;
 #endif
+#ifdef CONFIG_FEATURE_FIND_MMIN
+                } else if (strcmp(argv[i], "-mmin") == 0) {
+                        char *end;
+                        if (++i == argc)
+                                bb_error_msg_and_die(msg_req_arg, "-mmin");
+                        mmin_mins = strtol(argv[i], &end, 10);
+                        if (end[0] != '\0')
+                                bb_error_msg_and_die(msg_invalid_arg, argv[i], "-mmin");
+                        if ((mmin_char = argv[i][0]) == '-')
+                                mmin_mins = -mmin_mins;
+#endif
 #ifdef CONFIG_FEATURE_FIND_XDEV
                 } else if (strcmp(argv[i], "-xdev") == 0) {
                         struct stat stbuf;
diff --git a/include/usage.h b/include/usage.h
index 9387238ab..81f0e1d6d 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -722,6 +722,11 @@
 #else
 #  define USAGE_FIND_MTIME(a)
 #endif
+#ifdef CONFIG_FEATURE_FIND_MMIN
+  #define USAGE_FIND_MMIN(a) a
+#else
+  #define USAGE_FIND_MMIN(a)
+#endif
 #ifdef CONFIG_FEATURE_FIND_NEWER
 #  define USAGE_FIND_NEWER(a) a
 #else
@@ -752,7 +757,9 @@
 ) USAGE_FIND_PERM( \
         "\n\t-perm PERMS\tPermissions match any of (+NNN); all of (-NNN);\n\t\t\tor exactly (NNN)" \
 ) USAGE_FIND_MTIME( \
-        "\n\t-mtime TIME\tModified time is greater than (+N); less than (-N);\n\t\t\tor exactly (N) days" \
+        "\n\t-mtime DAYS\tModified time is greater than (+N); less than (-N);\n\t\t\tor exactly (N) days" \
+) USAGE_FIND_MMIN( \
+        "\n\t-mmin MINS\tModified time is greater than (+N); less than (-N);\n\t\t\tor exactly (N) minutes" \
 ) USAGE_FIND_NEWER( \
         "\n\t-newer FILE\tModified time is more recent than FILE's" \
 ) USAGE_FIND_INUM( \