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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* fstree_from_dir.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "config.h"
#include "mkfs.h"
#include <dirent.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
static sqfs_u32 clamp_timestamp(sqfs_s64 ts)
{
if (ts < 0)
return 0;
if (ts > 0x0FFFFFFFFLL)
return 0xFFFFFFFF;
return ts;
}
int fstree_from_dir(fstree_t *fs, dir_iterator_t *dir)
{
for (;;) {
dir_entry_t *ent = NULL;
tree_node_t *n = NULL;
char *extra = NULL;
struct stat sb;
int ret = dir->next(dir, &ent);
if (ret > 0)
break;
if (ret < 0) {
sqfs_perror("readdir", NULL, ret);
return -1;
}
n = fstree_get_node_by_path(fs, fs->root, ent->name,
false, true);
if (n == NULL) {
if (S_ISDIR(ent->mode))
dir_tree_iterator_skip(dir);
free(ent);
continue;
}
if (S_ISLNK(ent->mode)) {
ret = dir->read_link(dir, &extra);
if (ret) {
free(ent);
sqfs_perror("readlink", ent->name, ret);
return -1;
}
}
memset(&sb, 0, sizeof(sb));
sb.st_uid = ent->uid;
sb.st_gid = ent->gid;
sb.st_mode = ent->mode;
sb.st_mtime = clamp_timestamp(ent->mtime);
n = fstree_add_generic(fs, ent->name, &sb, extra);
free(extra);
free(ent);
if (n == NULL) {
perror("creating tree node");
return -1;
}
}
return 0;
}
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