bc: convert to "G trick" - this returns bc to zero bss increase

[oweals/busybox.git] / coreutils / cp.c

diff --git a/coreutils/cp.c b/coreutils/cp.c
index 2630c0d59614c6bb30160a627ba53ca6ebe01239..b26c0e9547c8a45a2f01ec15d6a79dfd1a984853 100644 (file)
--- a/coreutils/cp.c
+++ b/coreutils/cp.c
@@ -7,13 +7,35 @@
  *
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
-
-/* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
-
 /* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
  *
  * Size reduction.
  */
+//config:config CP
+//config:      bool "cp (9.7 kb)"
+//config:      default y
+//config:      help
+//config:      cp is used to copy files and directories.
+//config:
+//config:config FEATURE_CP_LONG_OPTIONS
+//config:      bool "Enable long options"
+//config:      default y
+//config:      depends on CP && LONG_OPTS
+//config:      help
+//config:      Enable long options.
+//config:      Also add support for --parents option.
+//config:
+//config:config FEATURE_CP_REFLINK
+//config:      bool "Enable --reflink[=auto]"
+//config:      default y
+//config:      depends on FEATURE_CP_LONG_OPTIONS
+
+//applet:IF_CP(APPLET_NOEXEC(cp, cp, BB_DIR_BIN, BB_SUID_DROP, cp))
+/* NOEXEC despite cases when it can be a "runner" (cp -r LARGE_DIR NEW_DIR) */
+
+//kbuild:lib-$(CONFIG_CP) += cp.o
+
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
 
 //usage:#define cp_trivial_usage
 //usage:       "[OPTIONS] SOURCE... DEST"
@@ -31,6 +53,7 @@
 //usage:     "\n       -f      Overwrite"
 //usage:     "\n       -i      Prompt before overwrite"
 //usage:     "\n       -l,-s   Create (sym)links"
+//usage:     "\n       -T      Treat DEST as a normal file"
 //usage:     "\n       -u      Copy only newer files"
 
 #include "libbb.h"
@@ -54,18 +77,24 @@ int cp_main(int argc, char **argv)
 #if ENABLE_FEATURE_CP_LONG_OPTIONS
                /*OPT_rmdest  = FILEUTILS_RMDEST = 1 << FILEUTILS_CP_OPTNUM */
                OPT_parents = 1 << (FILEUTILS_CP_OPTNUM+1),
+               OPT_reflink = 1 << (FILEUTILS_CP_OPTNUM+2),
 #endif
        };
 
-       // Need at least two arguments
-       // Soft- and hardlinking doesn't mix
-       // -P and -d are the same (-P is POSIX, -d is GNU)
-       // -r and -R are the same
-       // -R (and therefore -r) turns on -d (coreutils does this)
-       // -a = -pdR
-       opt_complementary = "-2:l--s:s--l:Pd:rRd:Rd:apdR";
 #if ENABLE_FEATURE_CP_LONG_OPTIONS
-       applet_long_options =
+# if ENABLE_FEATURE_CP_REFLINK
+       char *reflink = NULL;
+# endif
+       flags = getopt32long(argv, "^"
+               FILEUTILS_CP_OPTSTR
+               "\0"
+               // Need at least two arguments
+               // Soft- and hardlinking doesn't mix
+               // -P and -d are the same (-P is POSIX, -d is GNU)
+               // -r and -R are the same
+               // -R (and therefore -r) turns on -d (coreutils does this)
+               // -a = -pdR
+               "-2:l--s:s--l:Pd:rRd:Rd:apdR",
                "archive\0"        No_argument "a"
                "force\0"          No_argument "f"
                "interactive\0"    No_argument "i"
@@ -74,13 +103,34 @@ int cp_main(int argc, char **argv)
                "no-dereference\0" No_argument "P"
                "recursive\0"      No_argument "R"
                "symbolic-link\0"  No_argument "s"
+               "no-target-directory\0" No_argument "T"
                "verbose\0"        No_argument "v"
                "update\0"         No_argument "u"
                "remove-destination\0" No_argument "\xff"
                "parents\0"        No_argument "\xfe"
-               ;
+# if ENABLE_FEATURE_CP_REFLINK
+               "reflink\0"        Optional_argument "\xfd"
+               , &reflink
+# endif
+       );
+# if ENABLE_FEATURE_CP_REFLINK
+       BUILD_BUG_ON((int)OPT_reflink != (int)FILEUTILS_REFLINK);
+       if (flags & FILEUTILS_REFLINK) {
+               if (!reflink)
+                       flags |= FILEUTILS_REFLINK_ALWAYS;
+               else if (strcmp(reflink, "always") == 0)
+                       flags |= FILEUTILS_REFLINK_ALWAYS;
+               else if (strcmp(reflink, "auto") != 0)
+                       bb_show_usage();
+       }
+# endif
+#else
+       flags = getopt32(argv, "^"
+               FILEUTILS_CP_OPTSTR
+               "\0"
+               "-2:l--s:s--l:Pd:rRd:Rd:apdR"
+       );
 #endif
-       flags = getopt32(argv, FILEUTILS_CP_OPTSTR);
        /* Options of cp from GNU coreutils 6.10:
         * -a, --archive
         * -f, --force
@@ -102,6 +152,8 @@ int cp_main(int argc, char **argv)
         *      remove each existing destination file before attempting to open
         * --parents
         *      use full source file name under DIRECTORY
+        * -T, --no-target-directory
+        *      treat DEST as a normal file
         * NOT SUPPORTED IN BBOX:
         * --backup[=CONTROL]
         *      make a backup of each existing destination file
@@ -120,8 +172,6 @@ int cp_main(int argc, char **argv)
         *      override the usual backup suffix
         * -t, --target-directory=DIRECTORY
         *      copy all SOURCE arguments into DIRECTORY
-        * -T, --no-target-directory
-        *      treat DEST as a normal file
         * -x, --one-file-system
         *      stay on this file system
         * -Z, --context=CONTEXT
@@ -156,6 +206,12 @@ int cp_main(int argc, char **argv)
                if (d_flags < 0)
                        return EXIT_FAILURE;
 
+               if (flags & FILEUTILS_NO_TARGET_DIR) { /* -T */
+                       if (!(s_flags & 2) && (d_flags & 2))
+                               /* cp -T NOTDIR DIR */
+                               bb_error_msg_and_die("'%s' is a directory", last);
+               }
+
 #if ENABLE_FEATURE_CP_LONG_OPTIONS
                //bb_error_msg("flags:%x FILEUTILS_RMDEST:%x OPT_parents:%x",
                //      flags, FILEUTILS_RMDEST, OPT_parents);
@@ -173,11 +229,14 @@ int cp_main(int argc, char **argv)
                if (!((s_flags | d_flags) & 2)
                    /* ...or: recursing, the 1st is a directory, and the 2nd doesn't exist... */
                 || ((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags)
+                || (flags & FILEUTILS_NO_TARGET_DIR)
                ) {
                        /* Do a simple copy */
                        dest = last;
                        goto DO_COPY; /* NB: argc==2 -> *++argv==last */
                }
+       } else if (flags & FILEUTILS_NO_TARGET_DIR) {
+               bb_error_msg_and_die("too many arguments");
        }
 
        while (1) {