From: short <>
Date: Tue, 10 Jun 2003 22:15:54 +0000 (+0000)
Subject: Do partial transfer if destination device is shorter than the source
X-Git-Url: http://git.jankratochvil.net/?p=badblock-guess.git;a=commitdiff_plain;h=ecd4617f5b30bc5816680650ef70b34073602d80

Do partial transfer if destination device is shorter than the source
---

diff --git a/badblock-guess.c b/badblock-guess.c
index e7dacd2..69103fd 100644
--- a/badblock-guess.c
+++ b/badblock-guess.c
@@ -56,8 +56,8 @@ static void finish(void) G_GNUC_NORETURN;
 
 static int src_fd=-1,dst_fd=-1;
 static const char *src_name,*dst_name;
-static ext2_loff_t src_len;	/* in blocks! */
-static blk_t src_lenblk;	/* ==src_len, just a different type */
+static ext2_loff_t src_len,dst_len;	/* in blocks! */
+static blk_t src_lenblk,dst_lenblk;	/* ==src_len,==dst_len, just a different type */
 
 static ext2_loff_t stat_lastread,stat_todo,stat_bads,stat_largest,stat_todo_hunks;
 
@@ -470,6 +470,23 @@ struct stat src_stat,dst_stat;
 		fprintf(stderr,"\"%s\" length %llu <=0\n",src_name,(unsigned long long)src_len);
 		exit(EXIT_FAILURE);
 		}
+	if (dst_fd!=-1) {
+		if (ext2fs_get_device_size(dst_name,BLOCK,&dst_lenblk)) {
+			fprintf(stderr,"ext2fs_get_device_size(\"%s\",%d,...): %m\n",dst_name,BLOCK);
+			exit(EXIT_FAILURE);
+			}
+		dst_len=dst_lenblk;
+		if (dst_len<=0) {
+			fprintf(stderr,"\"%s\" length %llu <=0\n",dst_name,(unsigned long long)dst_len);
+			exit(EXIT_FAILURE);
+			}
+		if (dst_len<src_len) {
+			fprintf(stderr,"WARNING: Ignoring exceeding trailing data of \"%s\" from %llu up to its end %llu!\n",
+					src_name,(unsigned long long)dst_len,(unsigned long long)src_len);
+			src_len=dst_len;
+			src_lenblk=dst_lenblk;
+			}
+		}
 
 	node_memchunk=g_mem_chunk_new("node_memchunk",sizeof(struct range)/*atom_size*/,
 			0x1000 /*are_size: 64KB*/,G_ALLOC_AND_FREE);