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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-07-21 20:22:04 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-07-21 20:22:04 +0200
commit2a05bf5bc660bfebb35e42f1f8a0c0ac56e0f9d9 (patch)
tree07492d6744db580ba487503a7a4572d4a92ae0c1 /lib
parent80cc3970e97ec71b5e645ca5132bebf115423fb2 (diff)
Implement generating an inode table for NFS export
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib')
-rw-r--r--lib/Makemodule.am1
-rw-r--r--lib/sqfs/write_export_table.c36
2 files changed, 37 insertions, 0 deletions
diff --git a/lib/Makemodule.am b/lib/Makemodule.am
index 7e6ca82..ab2030c 100644
--- a/lib/Makemodule.am
+++ b/lib/Makemodule.am
@@ -35,6 +35,7 @@ libsquashfs_a_SOURCES += lib/sqfs/deserialize_fstree.c
libsquashfs_a_SOURCES += lib/sqfs/data_writer.c lib/sqfs/write_xattr.c
libsquashfs_a_SOURCES += include/data_writer.h include/frag_reader.h
libsquashfs_a_SOURCES += include/data_reader.h lib/sqfs/data_reader.c
+libsquashfs_a_SOURCES += lib/sqfs/write_export_table.c
libutil_a_SOURCES = lib/util/canonicalize_name.c lib/util/write_data.c
libutil_a_SOURCES += lib/util/read_data.c include/util.h
diff --git a/lib/sqfs/write_export_table.c b/lib/sqfs/write_export_table.c
new file mode 100644
index 0000000..eee4e01
--- /dev/null
+++ b/lib/sqfs/write_export_table.c
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+#include "highlevel.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int write_export_table(int outfd, fstree_t *fs, sqfs_super_t *super,
+ compressor_t *cmp)
+{
+ uint64_t *table, start;
+ size_t i;
+ int ret;
+
+ table = malloc(sizeof(uint64_t) * fs->inode_tbl_size);
+
+ if (table == NULL) {
+ perror("Allocating NFS export table");
+ return -1;
+ }
+
+ for (i = 0; i < fs->inode_tbl_size; ++i) {
+ if (fs->inode_table[i] == NULL) {
+ table[i] = 0xFFFFFFFFFFFFFFFF;
+ } else {
+ table[i] = htole64(fs->inode_table[i]->inode_ref);
+ }
+ }
+
+ ret = sqfs_write_table(outfd, super, table, sizeof(table[0]),
+ fs->inode_tbl_size, &start, cmp);
+
+ super->export_table_start = start;
+ super->flags |= SQFS_FLAG_EXPORTABLE;
+ free(table);
+ return ret;
+}