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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
*
* Copyright (C) 2012 William Jon McCann <mccann@redhat.com>
* Copyright (C) 2012 Colin Walters <walters@verbum.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include "libgsystem.h"
#include <glib-unix.h>
#include <sys/stat.h>
static gboolean
cp_internal (GFile *src,
GFile *dest,
gboolean use_hardlinks,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_unref_object GFileEnumerator *enumerator = NULL;
gs_unref_object GFileInfo *file_info = NULL;
GError *temp_error = NULL;
enumerator = g_file_enumerate_children (src, "standard::type,standard::name,unix::mode",
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error);
if (!enumerator)
goto out;
if (!gs_file_ensure_directory (dest, FALSE, cancellable, error))
goto out;
while ((file_info = g_file_enumerator_next_file (enumerator, cancellable, &temp_error)) != NULL)
{
const char *name = g_file_info_get_name (file_info);
gs_unref_object GFile *src_child = g_file_get_child (src, name);
gs_unref_object GFile *dest_child = g_file_get_child (dest, name);
if (g_file_info_get_file_type (file_info) == G_FILE_TYPE_DIRECTORY)
{
if (!gs_file_ensure_directory (dest_child, FALSE, cancellable, error))
goto out;
/* Can't do this even though we'd like to; it fails with an error about
* setting standard::type not being supported =/
*
if (!g_file_set_attributes_from_info (dest_child, file_info, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error))
goto out;
*/
if (chmod (gs_file_get_path_cached (dest_child),
g_file_info_get_attribute_uint32 (file_info, "unix::mode")) == -1)
{
int errsv = errno;
g_set_error_literal (error, G_IO_ERROR, g_io_error_from_errno (errsv),
g_strerror (errsv));
goto out;
}
if (!cp_internal (src_child, dest_child, use_hardlinks, cancellable, error))
goto out;
}
else
{
gboolean did_link = FALSE;
(void) unlink (gs_file_get_path_cached (dest_child));
if (use_hardlinks)
{
if (link (gs_file_get_path_cached (src_child), gs_file_get_path_cached (dest_child)) == -1)
{
if (!(errno == EMLINK || errno == EXDEV))
{
int errsv = errno;
g_set_error_literal (error, G_IO_ERROR, g_io_error_from_errno (errsv),
g_strerror (errsv));
goto out;
}
use_hardlinks = FALSE;
}
else
did_link = TRUE;
}
if (!did_link)
{
if (!g_file_copy (src_child, dest_child,
G_FILE_COPY_OVERWRITE | G_FILE_COPY_ALL_METADATA | G_FILE_COPY_NOFOLLOW_SYMLINKS,
cancellable, NULL, NULL, error))
goto out;
}
}
g_clear_object (&file_info);
}
if (temp_error)
{
g_propagate_error (error, temp_error);
goto out;
}
ret = TRUE;
out:
return ret;
}
/**
* gs_shutil_cp_al_or_fallback:
* @src: Source path
* @dest: Destination path
* @cancellable:
* @error:
*
* Recursively copy path @src (which must be a directory) to the
* target @dest. If possible, hardlinks are used; if a hardlink is
* not possible, a regular copy is created. Any existing files are
* overwritten.
*
* Returns: %TRUE on success
*/
gboolean
gs_shutil_cp_al_or_fallback (GFile *src,
GFile *dest,
GCancellable *cancellable,
GError **error)
{
return cp_internal (src, dest, TRUE, cancellable, error);
}
/**
* gs_shutil_cp_a:
* @src: Source path
* @dest: Destination path
* @cancellable:
* @error:
*
* Recursively copy path @src (which must be a directory) to the
* target @dest. Any existing files are overwritten.
*
* Returns: %TRUE on success
*/
gboolean
gs_shutil_cp_a (GFile *src,
GFile *dest,
GCancellable *cancellable,
GError **error)
{
return cp_internal (src, dest, FALSE, cancellable, error);
}
/**
* gs_shutil_rm_rf:
* @path: A file or directory
* @cancellable:
* @error:
*
* Recursively delete the filename referenced by @path; it may be a
* file or directory. No error is thrown if @path does not exist.
*/
gboolean
gs_shutil_rm_rf (GFile *path,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_unref_object GFileEnumerator *dir_enum = NULL;
gs_unref_object GFileInfo *file_info = NULL;
GError *temp_error = NULL;
dir_enum = g_file_enumerate_children (path, "standard::type,standard::name",
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, &temp_error);
if (!dir_enum)
{
if (g_error_matches (temp_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
{
g_clear_error (&temp_error);
ret = TRUE;
}
else
g_propagate_error (error, temp_error);
goto out;
}
while ((file_info = g_file_enumerator_next_file (dir_enum, cancellable, &temp_error)) != NULL)
{
gs_unref_object GFile *subpath = NULL;
GFileType type;
const char *name;
type = g_file_info_get_attribute_uint32 (file_info, "standard::type");
name = g_file_info_get_attribute_byte_string (file_info, "standard::name");
subpath = g_file_get_child (path, name);
if (type == G_FILE_TYPE_DIRECTORY)
{
if (!gs_shutil_rm_rf (subpath, cancellable, error))
goto out;
}
else
{
if (!gs_file_unlink (subpath, cancellable, error))
goto out;
}
g_clear_object (&file_info);
}
if (temp_error)
{
g_propagate_error (error, temp_error);
goto out;
}
if (!g_file_delete (path, cancellable, error))
goto out;
ret = TRUE;
out:
return ret;
}
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