1 files changed, 32 insertions, 16 deletions

diff --git a/sftp-server.c b/sftp-server.c
index 1d13e97b2..e82280057 100644
--- a/sftp-server.c
+++ b/sftp-server.c
@@ -14,7 +14,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "includes.h"
-RCSID("$OpenBSD: sftp-server.c,v 1.45 2004/02/19 21:15:04 markus Exp $");
+RCSID("$OpenBSD: sftp-server.c,v 1.47 2004/06/25 05:38:48 dtucker Exp $");
 
 #include "buffer.h"
 #include "bufaux.h"
@@ -31,11 +31,7 @@ RCSID("$OpenBSD: sftp-server.c,v 1.45 2004/02/19 21:15:04 markus Exp $");
 #define get_string(lenp)                buffer_get_string(&iqueue, lenp);
 #define TRACE                           debug
 
-#ifdef HAVE___PROGNAME
 extern char *__progname;
-#else
-char *__progname;
-#endif
 
 /* input and output queue */
 Buffer iqueue;
@@ -260,7 +256,7 @@ send_msg(Buffer *m)
 }
 
 static void
-send_status(u_int32_t id, u_int32_t error)
+send_status(u_int32_t id, u_int32_t status)
 {
         Buffer msg;
         const char *status_messages[] = {
@@ -276,14 +272,14 @@ send_status(u_int32_t id, u_int32_t error)
                 "Unknown error"                 /* Others */
         };
 
-        TRACE("sent status id %u error %u", id, error);
+        TRACE("sent status id %u error %u", id, status);
         buffer_init(&msg);
         buffer_put_char(&msg, SSH2_FXP_STATUS);
         buffer_put_int(&msg, id);
-        buffer_put_int(&msg, error);
+        buffer_put_int(&msg, status);
         if (version >= 3) {
                 buffer_put_cstring(&msg,
-                    status_messages[MIN(error,SSH2_FX_MAX)]);
+                    status_messages[MIN(status,SSH2_FX_MAX)]);
                 buffer_put_cstring(&msg, "");
         }
         send_msg(&msg);
@@ -839,9 +835,29 @@ process_rename(void)
                 status = errno_to_portable(errno);
         else if (S_ISREG(sb.st_mode)) {
                 /* Race-free rename of regular files */
-                if (link(oldpath, newpath) == -1)
-                        status = errno_to_portable(errno);
-                else if (unlink(oldpath) == -1) {
+                if (link(oldpath, newpath) == -1) {
+                        if (errno == EOPNOTSUPP
+#ifdef LINK_OPNOTSUPP_ERRNO
+                            || errno == LINK_OPNOTSUPP_ERRNO
+#endif
+                            ) {
+                                struct stat st;
+
+                                /*
+                                 * fs doesn't support links, so fall back to
+                                 * stat+rename.  This is racy.
+                                 */
+                                if (stat(newpath, &st) == -1) {
+                                        if (rename(oldpath, newpath) == -1)
+                                                status =
+                                                    errno_to_portable(errno);
+                                        else
+                                                status = SSH2_FX_OK;
+                                }
+                        } else {
+                                status = errno_to_portable(errno);
+                        }
+                } else if (unlink(oldpath) == -1) {
                         status = errno_to_portable(errno);
                         /* clean spare link */
                         unlink(newpath);
@@ -863,20 +879,20 @@ process_readlink(void)
 {
         u_int32_t id;
         int len;
-        char link[MAXPATHLEN];
+        char buf[MAXPATHLEN];
         char *path;
 
         id = get_int();
         path = get_string(NULL);
         TRACE("readlink id %u path %s", id, path);
-        if ((len = readlink(path, link, sizeof(link) - 1)) == -1)
+        if ((len = readlink(path, buf, sizeof(buf) - 1)) == -1)
                 send_status(id, errno_to_portable(errno));
         else {
                 Stat s;
 
-                link[len] = '\0';
+                buf[len] = '\0';
                 attrib_clear(&s.attrib);
-                s.name = s.long_name = link;
+                s.name = s.long_name = buf;
                 send_names(id, 1, &s);
         }
         xfree(path);