s3: VFS: vfs_cap. Implement symlinkat().

Currently identical to symlink().

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Böhme <slow@samba.org>

diff --git a/source3/modules/vfs_cap.c b/source3/modules/vfs_cap.c
index a942dd174a9955b76ce9fca168f49e4229aae728..e2d075f961a0692d4dc475cd8d40f74171bdbe84 100644 (file)
--- a/source3/modules/vfs_cap.c
+++ b/source3/modules/vfs_cap.c
@@ -549,6 +549,48 @@ static int cap_symlink(vfs_handle_struct *handle,
        return ret;
 }
 
+static int cap_symlinkat(vfs_handle_struct *handle,
+                       const char *link_contents,
+                       struct files_struct *dirfsp,
+                       const struct smb_filename *new_smb_fname)
+{
+       char *capold = capencode(talloc_tos(), link_contents);
+       char *capnew = capencode(talloc_tos(), new_smb_fname->base_name);
+       struct smb_filename *new_cap_smb_fname = NULL;
+       int saved_errno = 0;
+       int ret;
+
+       if (!capold || !capnew) {
+               errno = ENOMEM;
+               return -1;
+       }
+       new_cap_smb_fname = synthetic_smb_fname(talloc_tos(),
+                                       capnew,
+                                       NULL,
+                                       NULL,
+                                       new_smb_fname->flags);
+       if (new_cap_smb_fname == NULL) {
+               TALLOC_FREE(capold);
+               TALLOC_FREE(capnew);
+               errno = ENOMEM;
+               return -1;
+       }
+       ret = SMB_VFS_NEXT_SYMLINKAT(handle,
+                       capold,
+                       dirfsp,
+                       new_cap_smb_fname);
+       if (ret == -1) {
+               saved_errno = errno;
+       }
+       TALLOC_FREE(capold);
+       TALLOC_FREE(capnew);
+       TALLOC_FREE(new_cap_smb_fname);
+       if (saved_errno != 0) {
+               errno = saved_errno;
+       }
+       return ret;
+}
+
 static int cap_readlinkat(vfs_handle_struct *handle,
                        files_struct *dirfsp,
                        const struct smb_filename *smb_fname,
@@ -1043,6 +1085,7 @@ static struct vfs_fn_pointers vfs_cap_fns = {
        .chdir_fn = cap_chdir,
        .ntimes_fn = cap_ntimes,
        .symlink_fn = cap_symlink,
+       .symlinkat_fn = cap_symlinkat,
        .readlinkat_fn = cap_readlinkat,
        .linkat_fn = cap_linkat,
        .mknodat_fn = cap_mknodat,