Teach libc5 what a sighandler_t is

[oweals/busybox.git] / cp.c

diff --git a/cp.c b/cp.c
index 94b4ab024010ff324e6fa7a8ec6f94cfaa586f89..82d43adff625824fcc98ef535333797be8a840a9 100644 (file)
--- a/cp.c
+++ b/cp.c
@@ -1,7 +1,9 @@
+/* vi: set sw=4 ts=4: */
 /*
  * Mini cp implementation for busybox
  *
- * Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
+ *
+ * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -19,89 +21,94 @@
  *
  */
 
-#include "internal.h"
-#include <stdio.h>
-#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
 #include <utime.h>
+#include <errno.h>
 #include <dirent.h>
+#include <stdlib.h>
 
-const char cp_usage[] = "cp [OPTION]... SOURCE DEST\n"
-    "   or: cp [OPTION]... SOURCE... DIRECTORY\n"
-    "Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.\n"
-    "\n"
-    "\t-a\tsame as -dpR\n"
-    "\t-d\tpreserve links\n"
-    "\t-p\tpreserve file attributes if possable\n"
-    "\t-R\tcopy directories recursively\n";
-
-
-static int recursiveFlag = FALSE;
-static int followLinks = FALSE;
-static int preserveFlag = FALSE;
-static const char *srcName;
-static const char *destName;
-
-
-static int fileAction(const char *fileName)
-{
-    char newdestName[NAME_MAX];
-    strcpy(newdestName, destName);
-    strcat(newdestName, fileName+(strlen(srcName)));
-    return (copyFile(fileName, newdestName, preserveFlag, followLinks));
-}
+#include "busybox.h"
 
 extern int cp_main(int argc, char **argv)
 {
+       int status = 0;
+       int opt;
+       int flags = 0;
+       int i;
 
-    int dirFlag;
-
-    if (argc < 3) {
-       fprintf(stderr, "Usage: %s", cp_usage);
-       exit (FALSE);
-    }
-    argc--;
-    argv++;
-
-    /* Parse any options */
-    while (**argv == '-') {
-       while (*++(*argv))
-           switch (**argv) {
-           case 'a':
-               followLinks = TRUE;
-               preserveFlag = TRUE;
-               recursiveFlag = TRUE;
-               break;
-           case 'd':
-               followLinks = TRUE;
-               break;
-           case 'p':
-               preserveFlag = TRUE;
-               break;
-           case 'R':
-               recursiveFlag = TRUE;
-               break;
-           default:
-               fprintf(stderr, "Usage: %s\n", cp_usage);
-               exit(FALSE);
-           }
-       argc--;
-       argv++;
-    }
+       while ((opt = getopt(argc, argv, "adfipR")) != -1)
+               switch (opt) {
+               case 'a':
+                       flags |= FILEUTILS_PRESERVE_STATUS | FILEUTILS_RECUR;
+                       /* fallthrough */
+               case 'd':
+                       flags |= FILEUTILS_PRESERVE_SYMLINKS;
+                       break;
+               case 'f':
+                       flags |= FILEUTILS_FORCE;
+                       break;
+               case 'i':
+                       flags |= FILEUTILS_INTERACTIVE;
+                       break;
+               case 'p':
+                       flags |= FILEUTILS_PRESERVE_STATUS;
+                       break;
+               case 'R':
+                       flags |= FILEUTILS_RECUR;
+                       break;
+               default:
+                       show_usage();
+               }
+       
+       if (optind + 2 > argc)
+               show_usage();
 
+       /* If there are only two arguments and...  */
+       if (optind + 2 == argc) {
+               struct stat source_stat;
+               struct stat dest_stat;
+               int source_exists = 1;
+               int dest_exists = 1;
 
-    destName = argv[argc - 1];
+               if (((flags & FILEUTILS_PRESERVE_SYMLINKS) &&
+                               lstat(argv[optind], &source_stat) < 0) ||
+                               (!(flags & FILEUTILS_PRESERVE_SYMLINKS) &&
+                                stat(argv[optind], &source_stat))) {
+                       if (errno != ENOENT)
+                               perror_msg_and_die("unable to stat `%s'", argv[optind]);
+                       source_exists = 0;
+               }
 
-    dirFlag = isDirectory(destName);
+               if (stat(argv[optind + 1], &dest_stat) < 0) {
+                       if (errno != ENOENT)
+                               perror_msg_and_die("unable to stat `%s'", argv[optind + 1]);
+                       dest_exists = 0;
+               }
+               
+               /* ...if neither is a directory or...  */
+               if (((!source_exists || !S_ISDIR(source_stat.st_mode)) &&
+                               (!dest_exists || !S_ISDIR(dest_stat.st_mode))) ||
+                               /* ...recursing, the first is a directory, and the
+                                * second doesn't exist, then... */
+                               ((flags & FILEUTILS_RECUR) && S_ISDIR(source_stat.st_mode) &&
+                                !dest_exists)) {
+                       /* ...do a simple copy.  */
+                       if (copy_file(argv[optind], argv[optind + 1], flags) < 0)
+                               status = 1;
+                       return status;
+               }
+       }
 
-    if ((argc > 3) && !dirFlag) {
-       fprintf(stderr, "%s: not a directory\n", destName);
-       exit (FALSE);
-    }
+       for (i = optind; i < argc - 1; i++) {
+               char *dest = concat_path_file(argv[argc - 1],
+                               get_last_path_component(argv[i]));
+               if (copy_file(argv[i], dest, flags) < 0)
+                       status = 1;
+               free(dest);
+       }
 
-    while (argc-- >= 2) {
-       srcName = *(argv++);
-       exit( recursiveAction(srcName, recursiveFlag, followLinks,
-                              fileAction, fileAction));
-    }
-    exit( TRUE);
+       return status;
 }