* samtools-0.1.4-16 (r360)

[samtools.git] / knetfile.c

diff --git a/knetfile.c b/knetfile.c
index dbec205d2c29a0a562a5e5d337a3e914c3de7c21..322885a379642d19b638a9b0164b153cdcf5ed0b 100644 (file)
--- a/knetfile.c
+++ b/knetfile.c
@@ -208,22 +208,26 @@ off_t knet_read(knetFile *fp, void *buf, off_t len)
        return l;
 }
 
-off_t knet_seek(knetFile *fp, off_t off, int whence)
+int knet_seek(knetFile *fp, off_t off, int whence)
 {
        if (fp->type == KNF_TYPE_LOCAL) {
-               fp->offset = lseek(fp->fd, off, whence);
-               return fp->offset;
+               if (lseek(fp->fd, off, whence) == -1) {
+                       perror("lseek");
+                       return -1;
+               }
+               fp->offset = off;
+               return 0;
        }
        if (fp->type == KNF_TYPE_FTP) {
-               if (whence != SEEK_SET) {
+               if (whence != SEEK_SET) { // FIXME: we can surely allow SEEK_CUR and SEEK_END in future
                        fprintf(stderr, "[knet_seek] only SEEK_SET is supported for FTP. Offset is unchanged.\n");
                        return -1;
                }
                if (!fp->no_reconnect) kftp_reconnect(fp);
                kftp_connect_file(fp, off);
-               return fp->offset;
+               return 0;
        }
-       return 0;
+       return -1;
 }
 
 int knet_close(knetFile *fp)