idevicebackup2: Use fread/fwrite for copy operation to speed it up

1 files changed, 4 insertions, 14 deletions

diff --git a/tools/idevicebackup2.c b/tools/idevicebackup2.c
index fbe02f8..5ac214e 100644
--- a/tools/idevicebackup2.c
+++ b/tools/idevicebackup2.c
@@ -968,7 +968,8 @@ static void mb2_handle_make_directory(plist_t message, const char *backup_dir)
 static void mb2_copy_file_by_path(const gchar *src, const gchar *dst)
 {
         FILE *from, *to;
-        char ch;
+        char buf[BUFSIZ];
+        size_t length;
 
         /* open source file */
         if ((from = fopen(src, "rb")) == NULL) {
@@ -983,19 +984,8 @@ static void mb2_copy_file_by_path(const gchar *src, const gchar *dst)
         }
 
         /* copy the file */
-        while(!feof(from)) {
-                ch = fgetc(from);
-                if(ferror(from)) {
-                        printf("Error reading source file.\n");
-                        break;
-                }
-                if(!feof(from))
-                        fputc(ch, to);
-
-                if(ferror(to)) {
-                        printf("Error writing destination file.\n");
-                        break;
-                }
+        while ((length = fread(buf, 1, BUFSIZ, from)) != 0) {
+                fwrite(buf, 1, length, to);
         }
 
         if(fclose(from) == EOF) {