/*
* Mini copy_file implementation for busybox
*
- *
* Copyright (C) 2001 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
*
* This program is free software; you can redistribute it and/or modify
#include <errno.h>
#include <dirent.h>
#include <stdlib.h>
+#include <string.h>
-#include "libbb.h"
+#include "busybox.h"
int copy_file(const char *source, const char *dest, int flags)
{
int dest_exists = 1;
int status = 0;
- if (((flags & FILEUTILS_PRESERVE_SYMLINKS) &&
+ if ((!(flags & FILEUTILS_DEREFERENCE) &&
lstat(source, &source_stat) < 0) ||
- (!(flags & FILEUTILS_PRESERVE_SYMLINKS) &&
+ ((flags & FILEUTILS_DEREFERENCE) &&
stat(source, &source_stat) < 0)) {
perror_msg("%s", source);
return -1;
dest_exists = 0;
}
- if (dest_exists && source_stat.st_rdev == dest_stat.st_rdev &&
+ if (dest_exists && source_stat.st_dev == dest_stat.st_dev &&
source_stat.st_ino == dest_stat.st_ino) {
error_msg("`%s' and `%s' are the same file", source, dest);
return -1;
umask(saved_umask);
}
-
+
/* Recursively copy files in SOURCE. */
if ((dp = opendir(source)) == NULL) {
perror_msg("unable to open directory `%s'", source);
free(new_source);
free(new_dest);
}
-
+
/* ??? What if an error occurs in readdir? */
if (closedir(dp) < 0) {
status = -1;
}
} else if (S_ISREG(source_stat.st_mode)) {
- FILE *sfp, *dfp;
+ FILE *sfp, *dfp=NULL;
+#ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS
+ char *link_name;
+
+ if (!(flags & FILEUTILS_DEREFERENCE) &&
+ is_in_ino_dev_hashtable(&source_stat, &link_name)) {
+ if (link(link_name, dest) < 0) {
+ perror_msg("unable to link `%s'", dest);
+ return -1;
+ }
+
+ return 0;
+ }
+#endif
+
+ if ((sfp = fopen(source, "r")) == NULL) {
+ perror_msg("unable to open `%s'", source);
+ return -1;
+ }
if (dest_exists) {
if (flags & FILEUTILS_INTERACTIVE) {
fprintf(stderr, "%s: overwrite `%s'? ", applet_name, dest);
- if (!ask_confirmation())
+ if (!ask_confirmation()) {
+ fclose (sfp);
return 0;
+ }
}
if ((dfp = fopen(dest, "w")) == NULL) {
if (!(flags & FILEUTILS_FORCE)) {
perror_msg("unable to open `%s'", dest);
+ fclose (sfp);
return -1;
}
if (unlink(dest) < 0) {
perror_msg("unable to remove `%s'", dest);
+ fclose (sfp);
return -1;
}
if (fd >= 0)
close(fd);
perror_msg("unable to open `%s'", dest);
+ fclose (sfp);
return -1;
}
}
- if ((sfp = fopen(source, "r")) == NULL) {
- fclose(dfp);
- perror_msg("unable to open `%s'", source);
+ if (copy_file_chunk(sfp, dfp, -1) < 0)
status = -1;
- goto end;
- }
-
- copy_file_chunk(sfp, dfp, source_stat.st_size);
if (fclose(dfp) < 0) {
perror_msg("unable to close `%s'", dest);
if (lchown(dest, source_stat.st_uid, source_stat.st_gid) < 0)
perror_msg("unable to preserve ownership of `%s'", dest);
#endif
+
+#ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS
+ add_to_ino_dev_hashtable(&source_stat, dest);
+#endif
+
return 0;
} else {
error_msg("internal error: unrecognized file type");
return -1;
}
+#ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS
+ add_to_ino_dev_hashtable(&source_stat, dest);
+#endif
+
end:
if (flags & FILEUTILS_PRESERVE_STATUS) {