improve error messages in nfs-cp

Signed-off-by: Ronnie Sahlberg <[email protected]>

utils/nfs-cp.c

@@ -44,9 +44,11 @@ WSADATA wsaData;
 #include <unistd.h>
 #endif
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <string.h>
 #include <sys/types.h>
 #include <fcntl.h>
 #include "libnfs.h"
@@ -264,15 +266,16 @@ int main(int argc, char *argv[])
 		}
 		count = file_pread(src, buf, count, off);
 		if (count < 0) {
-			fprintf(stderr, "Failed to read from source file\n");
+			fprintf(stderr, "Failed to read from source file (%s)\n",
+				src->is_nfs ? nfs_get_error(src->nfs) : strerror(errno));
 			free_file_context(src);
 			free_file_context(dst);
 			return 10;
 		}
 		count = file_pwrite(dst, buf, count, off);
 		if (count < 0) {
-			fprintf(stderr, "Failed to write to dest file %s\n",
-				dst->is_nfs ? nfs_get_error(dst->nfs) : "");
+			fprintf(stderr, "Failed to write to dest file (%s)\n",
+				dst->is_nfs ? nfs_get_error(dst->nfs) : strerror(errno));
 			free_file_context(src);
 			free_file_context(dst);
 			return 10;