Apply patch from Ghozlane Toumi to add -inum support to find.

Apply patch from Ghozlane Toumi to make find smaller by combining
    similar error messages
Forward port find -newer support from busybox stable that was
    missing from unstable.  -Erik.
Fixup usage messages for find.  -Erik

3 files changed, 79 insertions, 12 deletions

diff --git a/findutils/Config.in b/findutils/Config.in
index 42400ffb8..7cfcf2fa4 100644
--- a/findutils/Config.in
+++ b/findutils/Config.in
@@ -39,6 +39,21 @@ config CONFIG_FEATURE_FIND_XDEV
         help
           Please submit a patch to add help text for this item.
 
+config CONFIG_FEATURE_FIND_NEWER
+        bool "  Enable -newer option for comparing file mtimes"
+        default y
+        depends on CONFIG_FIND
+        help
+          Support the 'find -newer' option for finding any files which have
+          a modified time that is more recent than the specified FILE.
+
+config CONFIG_FEATURE_FIND_INUM
+        bool "  Enable inode number matching (-inum) option"
+        default y
+        depends on CONFIG_FIND
+        help
+          Support the 'fine -inum' option for searching by inode number.
+
 config CONFIG_GREP
         bool "grep"
         default n
diff --git a/findutils/find.c b/findutils/find.c
index b0f4bca6b..048aac503 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -34,6 +34,9 @@
 #include <ctype.h>
 #include "busybox.h"
 
+//XXX just found out about libbb/messages.c . maybe move stuff there ? - ghoz
+const char msg_req_arg[] = "option `%s' requires an argument";
+const char msg_invalid_arg[] = "invalid argument `%s' to `%s'";
 
 static char *pattern;
 
@@ -56,6 +59,13 @@ static dev_t *xdev_dev;
 static int xdev_count = 0;
 #endif
 
+#ifdef CONFIG_FEATURE_FIND_NEWER
+time_t newer_mtime;
+#endif
+
+#ifdef CONFIG_FEATURE_FIND_INUM
+static ino_t inode_num;
+#endif
 
 static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
 {
@@ -109,7 +119,19 @@ static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
                 }
         }
 #endif
-
+#ifdef CONFIG_FEATURE_FIND_NEWER
+        if (newer_mtime != 0) {
+                time_t file_age = newer_mtime - statbuf->st_mtime;
+                if (file_age >= 0)
+                        goto no_match;
+        }
+#endif
+#ifdef CONFIG_FEATURE_FIND_INUM
+        if (inode_num != 0) {
+                if (!(statbuf->st_ino == inode_num))
+                        goto no_match;
+        }
+#endif
         puts(fileName);
 no_match:
         return (TRUE);
@@ -145,7 +167,7 @@ static int find_type(char *type)
         }
 
         if (mask == 0 || type[1] != '\0')
-                error_msg_and_die("invalid argument `%s' to `-type'", type);
+                error_msg_and_die(msg_invalid_arg, type, "-type");
 
         return mask;
 }
@@ -170,24 +192,22 @@ int find_main(int argc, char **argv)
                         }
                 else if (strcmp(argv[i], "-name") == 0) {
                         if (++i == argc)
-                                error_msg_and_die("option `-name' requires an argument");
+                                error_msg_and_die(msg_req_arg, "-name");
                         pattern = argv[i];
 #ifdef CONFIG_FEATURE_FIND_TYPE
                 } else if (strcmp(argv[i], "-type") == 0) {
                         if (++i == argc)
-                                error_msg_and_die("option `-type' requires an argument");
+                                error_msg_and_die(msg_req_arg, "-type");
                         type_mask = find_type(argv[i]);
 #endif
 #ifdef CONFIG_FEATURE_FIND_PERM
                 } else if (strcmp(argv[i], "-perm") == 0) {
                         char *end;
                         if (++i == argc)
-                                error_msg_and_die("option `-perm' requires an argument");
+                                error_msg_and_die(msg_req_arg, "-perm");
                         perm_mask = strtol(argv[i], &end, 8);
-                        if (end[0] != '\0')
-                                error_msg_and_die("invalid argument `%s' to `-perm'", argv[i]);
-                        if (perm_mask > 07777)
-                                error_msg_and_die("invalid argument `%s' to `-perm'", argv[i]);
+                        if ((end[0] != '\0') || (perm_mask > 07777))
+                                error_msg_and_die(msg_invalid_arg, argv[i], "-perm");
                         if ((perm_char = argv[i][0]) == '-')
                                 perm_mask = -perm_mask;
 #endif
@@ -195,10 +215,10 @@ int find_main(int argc, char **argv)
                 } else if (strcmp(argv[i], "-mtime") == 0) {
                         char *end;
                         if (++i == argc)
-                                error_msg_and_die("option `-mtime' requires an argument");
+                                error_msg_and_die(msg_req_arg, "-mtime");
                         mtime_days = strtol(argv[i], &end, 10);
                         if (end[0] != '\0')
-                                error_msg_and_die("invalid argument `%s' to `-mtime'", argv[i]);
+                                error_msg_and_die(msg_invalid_arg, argv[i], "-mtime");
                         if ((mtime_char = argv[i][0]) == '-')
                                 mtime_days = -mtime_days;
 #endif
@@ -223,6 +243,24 @@ int find_main(int argc, char **argv)
                                 }
                         }                                               
 #endif
+#ifdef CONFIG_FEATURE_FIND_NEWER
+                } else if (strcmp(argv[i], "-newer") == 0) {
+                        struct stat stat_newer;
+                        if (++i == argc)
+                                error_msg_and_die(msg_req_arg, "-newer");
+                    if (stat (argv[i], &stat_newer) != 0)
+                                error_msg_and_die("file %s not found", argv[i]);
+                        newer_mtime = stat_newer.st_mtime;
+#endif
+#ifdef CONFIG_FEATURE_FIND_INUM
+                } else if (strcmp(argv[i], "-inum") == 0) {
+                        char *end;
+                        if (++i == argc)
+                                error_msg_and_die(msg_req_arg, "-inum");
+                        inode_num = strtol(argv[i], &end, 10);
+                        if (end[0] != '\0')
+                                error_msg_and_die(msg_invalid_arg, argv[i], "-inum");
+#endif
                 } else
                         show_usage();
         }
diff --git a/include/usage.h b/include/usage.h
index beb32fdc9..077306bdf 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -568,6 +568,16 @@
 #else
   #define USAGE_FIND_MTIME(a)
 #endif
+#ifdef CONFIG_FEATURE_FIND_NEWER
+  #define USAGE_FIND_NEWER(a) a
+#else
+  #define USAGE_FIND_NEWER(a)
+#endif
+#ifdef CONFIG_FEATURE_FIND_INUM
+  #define USAGE_FIND_INUM(a) a
+#else
+  #define USAGE_FIND_INUM(a)
+#endif
 
 #define find_trivial_usage \
         "[PATH...] [EXPRESSION]"
@@ -583,7 +593,11 @@
 ) 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 TIME\tModified time is greater than (+N); less than (-N);\n\t\t\tor exactly (N) days" \
+) USAGE_FIND_NEWER( \
+        "\n\t-newer FILE\tModified time is more recent than FILE's" \
+) USAGE_FIND_INUM( \
+        "\n\t-inum N\t\tFile has inode number N")
 #define find_example_usage \
         "$ find / -name /etc/passwd\n" \
         "/etc/passwd\n"