Adding upstream version 2.38.1.upstream/2.38.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1756 insertions, 0 deletions

diff --git a/libfdisk/src/script.c b/libfdisk/src/script.c
new file mode 100644
index 0000000..d93b981
--- /dev/null
+++ b/libfdisk/src/script.c
@@ -0,0 +1,1756 @@
+
+#include "fdiskP.h"
+#include "strutils.h"
+#include "carefulputc.h"
+#include "mangle.h"
+#include "jsonwrt.h"
+#include "fileutils.h"
+
+#ifdef FUZZ_TARGET
+#include "fuzz.h"
+#endif
+
+/**
+ * SECTION: script
+ * @title: Script
+ * @short_description: complex way to create and dump partition table
+ *
+ * This interface can be used to compose in-memory partition table with all details,
+ * write all partition table description to human readable text file, read it
+ * from the file, and apply the script to on-disk label.
+ *
+ * The libfdisk scripts are based on original sfdisk script (dumps). Each
+ * script has two parts: script headers and partition table entries
+ * (partitions). The script is possible to dump in JSON too (read JSON is not
+ * implemented yet).
+ *
+ * For more details about script format see sfdisk man page.
+ *
+ * There are four ways how to build the script:
+ *
+ * - read the current on-disk partition table by fdisk_script_read_context())
+ * - read it from text file by fdisk_script_read_file()
+ * - read it interactively from user by fdisk_script_read_line() and fdisk_script_set_fgets()
+ * - manually in code by fdisk_script_set_header() and fdisk_script_set_table()
+ *
+ * The read functions fdisk_script_read_context() and fdisk_script_read_file()
+ * creates always a new script partition table. The table (see
+ * fdisk_script_get_table()) is possible to modify by standard
+ * fdisk_table_...() functions and then apply by fdisk_apply_script().
+ *
+ * Note that script API is fully non-interactive and forces libfdisk to not use
+ * standard dialog driven partitioning as we have in fdisk(8).
+ */
+
+/* script header (e.g. unit: sectors) */
+struct fdisk_scriptheader {
+	struct list_head	headers;
+	char			*name;
+	char			*data;
+};
+
+/* script control struct */
+struct fdisk_script {
+	struct fdisk_table	*table;
+	struct list_head	headers;
+	struct fdisk_context	*cxt;
+
+	int			refcount;
+	char			*(*fn_fgets)(struct fdisk_script *, char *, size_t, FILE *);
+	void			*userdata;
+
+	/* parser's state */
+	size_t			nlines;
+	struct fdisk_label	*label;
+
+	unsigned int		json : 1,		/* JSON output */
+				force_label : 1;	/* label: <name> specified */
+};
+
+static void fdisk_script_free_header(struct fdisk_scriptheader *fi)
+{
+	if (!fi)
+		return;
+
+	DBG(SCRIPT, ul_debugobj(fi, "free header %s", fi->name));
+	free(fi->name);
+	free(fi->data);
+	list_del(&fi->headers);
+	free(fi);
+}
+
+/**
+ * fdisk_new_script:
+ * @cxt: context
+ *
+ * The script hold fdisk_table and additional information to read/write
+ * script to the file.
+ *
+ * Returns: newly allocated script struct.
+ */
+struct fdisk_script *fdisk_new_script(struct fdisk_context *cxt)
+{
+	struct fdisk_script *dp = NULL;
+
+	dp = calloc(1, sizeof(*dp));
+	if (!dp)
+		return NULL;
+
+	DBG(SCRIPT, ul_debugobj(dp, "alloc"));
+	dp->refcount = 1;
+	dp->cxt = cxt;
+	fdisk_ref_context(cxt);
+
+	INIT_LIST_HEAD(&dp->headers);
+	return dp;
+}
+
+/**
+ * fdisk_new_script_from_file:
+ * @cxt: context
+ * @filename: path to the script file
+ *
+ * Allocates a new script and reads script from @filename.
+ *
+ * Returns: new script instance or NULL in case of error (check errno for more details).
+ */
+struct fdisk_script *fdisk_new_script_from_file(struct fdisk_context *cxt,
+						 const char *filename)
+{
+	int rc;
+	FILE *f;
+	struct fdisk_script *dp, *res = NULL;
+
+	assert(cxt);
+	assert(filename);
+
+	DBG(SCRIPT, ul_debug("opening %s", filename));
+	f = fopen(filename, "r");
+	if (!f)
+		return NULL;
+
+	dp = fdisk_new_script(cxt);
+	if (!dp)
+		goto done;
+
+	rc = fdisk_script_read_file(dp, f);
+	if (rc) {
+		errno = -rc;
+		goto done;
+	}
+
+	res = dp;
+done:
+	fclose(f);
+	if (!res)
+		fdisk_unref_script(dp);
+	else
+		errno = 0;
+
+	return res;
+}
+
+/**
+ * fdisk_ref_script:
+ * @dp: script pointer
+ *
+ * Increments reference counter.
+ */
+void fdisk_ref_script(struct fdisk_script *dp)
+{
+	if (dp)
+		dp->refcount++;
+}
+
+static void fdisk_reset_script(struct fdisk_script *dp)
+{
+	assert(dp);
+
+	DBG(SCRIPT, ul_debugobj(dp, "reset"));
+
+	if (dp->table)
+		fdisk_reset_table(dp->table);
+
+	while (!list_empty(&dp->headers)) {
+		struct fdisk_scriptheader *fi = list_entry(dp->headers.next,
+						  struct fdisk_scriptheader, headers);
+		fdisk_script_free_header(fi);
+	}
+	INIT_LIST_HEAD(&dp->headers);
+}
+
+/**
+ * fdisk_unref_script:
+ * @dp: script pointer
+ *
+ * Decrements reference counter, on zero the @dp is automatically
+ * deallocated.
+ */
+void fdisk_unref_script(struct fdisk_script *dp)
+{
+	if (!dp)
+		return;
+
+	dp->refcount--;
+	if (dp->refcount <= 0) {
+		fdisk_reset_script(dp);
+		fdisk_unref_context(dp->cxt);
+		fdisk_unref_table(dp->table);
+		DBG(SCRIPT, ul_debugobj(dp, "free script"));
+		free(dp);
+	}
+}
+
+/**
+ * fdisk_script_set_userdata
+ * @dp: script
+ * @data: your data
+ *
+ * Sets data usable for example in callbacks (e.g fdisk_script_set_fgets()).
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_script_set_userdata(struct fdisk_script *dp, void *data)
+{
+	assert(dp);
+	dp->userdata = data;
+	return 0;
+}
+
+/**
+ * fdisk_script_get_userdata
+ * @dp: script
+ *
+ * Returns: user data or NULL.
+ */
+void *fdisk_script_get_userdata(struct fdisk_script *dp)
+{
+	assert(dp);
+	return dp->userdata;
+}
+
+static struct fdisk_scriptheader *script_get_header(struct fdisk_script *dp,
+						     const char *name)
+{
+	struct list_head *p;
+
+	list_for_each(p, &dp->headers) {
+		struct fdisk_scriptheader *fi = list_entry(p, struct fdisk_scriptheader, headers);
+
+		if (strcasecmp(fi->name, name) == 0)
+			return fi;
+	}
+
+	return NULL;
+}
+
+/**
+ * fdisk_script_get_header:
+ * @dp: script instance
+ * @name: header name
+ *
+ * Returns: pointer to header data or NULL.
+ */
+const char *fdisk_script_get_header(struct fdisk_script *dp, const char *name)
+{
+	struct fdisk_scriptheader *fi;
+
+	assert(dp);
+	assert(name);
+
+	fi = script_get_header(dp, name);
+	return fi ? fi->data : NULL;
+}
+
+/**
+ * fdisk_script_set_header:
+ * @dp: script instance
+ * @name: header name
+ * @data: header data (or NULL)
+ *
+ * The headers are used as global options for whole partition
+ * table, always one header per line.
+ *
+ * If no @data is specified then the header is removed. If header does not exist
+ * and @data is specified then a new header is added.
+ *
+ * Note that libfdisk can be used to specify arbitrary custom header, the default
+ * built-in headers are "unit" and "label", and some label specific headers
+ * (for example "uuid" and "name" for GPT).
+ *
+ * Returns: 0 on success, <0 on error
+ */
+int fdisk_script_set_header(struct fdisk_script *dp,
+			    const char *name,
+			    const char *data)
+{
+	struct fdisk_scriptheader *fi;
+
+	if (!dp || !name)
+		return -EINVAL;
+
+	fi = script_get_header(dp, name);
+	if (!fi && !data)
+		return 0;	/* want to remove header that does not exist, success */
+
+	if (!data) {
+		DBG(SCRIPT, ul_debugobj(dp, "freeing header %s", name));
+
+		/* no data, remove the header */
+		fdisk_script_free_header(fi);
+		return 0;
+	}
+
+	if (!fi) {
+		int rc;
+
+		DBG(SCRIPT, ul_debugobj(dp, "setting new header %s='%s'", name, data));
+
+		/* new header */
+		fi = calloc(1, sizeof(*fi));
+		if (!fi)
+			return -ENOMEM;
+		INIT_LIST_HEAD(&fi->headers);
+
+		rc = strdup_to_struct_member(fi, name, name);
+		if (!rc)
+			rc = strdup_to_struct_member(fi, data, data);
+		if (rc) {
+			fdisk_script_free_header(fi);
+			return rc;
+		}
+		list_add_tail(&fi->headers, &dp->headers);
+	} else {
+		/* update existing */
+		char *x = strdup(data);
+
+		DBG(SCRIPT, ul_debugobj(dp, "update '%s' header '%s' -> '%s'", name, fi->data, data));
+
+		if (!x)
+			return -ENOMEM;
+		free(fi->data);
+		fi->data = x;
+	}
+
+	if (strcmp(name, "label") == 0)
+		dp->label = NULL;
+
+	return 0;
+}
+
+/**
+ * fdisk_script_get_table:
+ * @dp: script
+ *
+ * The table represents partitions holded by the script. The table is possible to
+ * fill by fdisk_script_read_context() or fdisk_script_read_file(). All the "read"
+ * functions remove old partitions from the table. See also fdisk_script_set_table().
+ *
+ * Returns: NULL or script table.
+ */
+struct fdisk_table *fdisk_script_get_table(struct fdisk_script *dp)
+{
+	assert(dp);
+
+	if (!dp->table)
+		/*
+		 * Make sure user has access to the same table as script. If
+		 * there is no table then create a new one and reuse it later.
+		 */
+		dp->table = fdisk_new_table();
+
+	return dp->table;
+}
+
+/**
+ * fdisk_script_set_table:
+ * @dp: script
+ * @tb: table
+ *
+ * Replaces table used by script and creates a new reference to @tb. This
+ * function can be used to generate a new script table independently on the current
+ * context and without any file reading.
+ *
+ * This is useful for example to create partition table with the same basic
+ * settings (e.g. label-id, ...) but with different partitions -- just call
+ * fdisk_script_read_context() to get current settings and then
+ * fdisk_script_set_table() to set a different layout.
+ *
+ * If @tb is NULL then the current script table is unreferenced.
+ *
+ * Note that script read_ functions (e.g. fdisk_script_read_context()) create
+ * always a new script table.
+ *
+ * Returns: 0 on success, <0 on error
+ *
+ * Since: 2.35
+ */
+int fdisk_script_set_table(struct fdisk_script *dp, struct fdisk_table *tb)
+{
+	if (!dp)
+		return -EINVAL;
+
+	fdisk_ref_table(tb);
+	fdisk_unref_table(dp->table);
+	dp->table = tb;
+
+	DBG(SCRIPT, ul_debugobj(dp, "table replaced"));
+	return 0;
+}
+
+static struct fdisk_label *script_get_label(struct fdisk_script *dp)
+{
+	assert(dp);
+	assert(dp->cxt);
+
+	if (!dp->label) {
+		dp->label = fdisk_get_label(dp->cxt,
+					fdisk_script_get_header(dp, "label"));
+		DBG(SCRIPT, ul_debugobj(dp, "label '%s'", dp->label ? dp->label->name : ""));
+	}
+	return dp->label;
+}
+
+/**
+ * fdisk_script_get_nlines:
+ * @dp: script
+ *
+ * Returns: number of parsed lines or <0 on error.
+ */
+int fdisk_script_get_nlines(struct fdisk_script *dp)
+{
+	assert(dp);
+	return dp->nlines;
+}
+
+/**
+ * fdisk_script_has_force_label:
+ * @dp: script
+ *
+ * Label has been explicitly specified in the script.
+ *
+ * Since: 2.30
+ *
+ * Returns: true if "label: name" has been parsed.
+ */
+int fdisk_script_has_force_label(struct fdisk_script *dp)
+{
+	assert(dp);
+	return dp->force_label;
+}
+
+
+/**
+ * fdisk_script_read_context:
+ * @dp: script
+ * @cxt: context
+ *
+ * Reads data from the @cxt context (on disk partition table) into the script.
+ * If the context is not specified then defaults to context used for fdisk_new_script().
+ *
+ * Return: 0 on success, <0 on error.
+ */
+int fdisk_script_read_context(struct fdisk_script *dp, struct fdisk_context *cxt)
+{
+	struct fdisk_label *lb;
+	int rc;
+	char *p = NULL;
+	char buf[64];
+
+	if (!dp || (!cxt && !dp->cxt))
+		return -EINVAL;
+
+	if (!cxt)
+		cxt = dp->cxt;
+
+	DBG(SCRIPT, ul_debugobj(dp, "reading context into script"));
+	fdisk_reset_script(dp);
+
+	lb = fdisk_get_label(cxt, NULL);
+	if (!lb)
+		return -EINVAL;
+
+	/* allocate (if not yet) and fill table */
+	rc = fdisk_get_partitions(cxt, &dp->table);
+	if (rc)
+		return rc;
+
+	/* generate headers */
+	rc = fdisk_script_set_header(dp, "label", fdisk_label_get_name(lb));
+
+	if (!rc && fdisk_get_disklabel_id(cxt, &p) == 0 && p) {
+		rc = fdisk_script_set_header(dp, "label-id", p);
+		free(p);
+	}
+	if (!rc && cxt->dev_path)
+		rc = fdisk_script_set_header(dp, "device", cxt->dev_path);
+	if (!rc)
+		rc = fdisk_script_set_header(dp, "unit", "sectors");
+
+	if (!rc && fdisk_is_label(cxt, GPT)) {
+		struct fdisk_labelitem item = FDISK_LABELITEM_INIT;
+
+		/* first-lba */
+		rc = fdisk_get_disklabel_item(cxt, GPT_LABELITEM_FIRSTLBA, &item);
+		if (!rc) {
+			snprintf(buf, sizeof(buf), "%"PRIu64, item.data.num64);
+			rc = fdisk_script_set_header(dp, "first-lba", buf);
+		}
+
+		/* last-lba */
+		if (!rc)
+			rc = fdisk_get_disklabel_item(cxt, GPT_LABELITEM_LASTLBA, &item);
+		if (!rc) {
+			snprintf(buf, sizeof(buf), "%"PRIu64, item.data.num64);
+			rc = fdisk_script_set_header(dp, "last-lba", buf);
+		}
+
+		/* table-length */
+		if (!rc) {
+			size_t n = fdisk_get_npartitions(cxt);
+			if (n != FDISK_GPT_NPARTITIONS_DEFAULT) {
+				snprintf(buf, sizeof(buf), "%zu", n);
+				rc = fdisk_script_set_header(dp, "table-length", buf);
+			}
+		}
+	}
+
+	if (!rc && fdisk_get_grain_size(cxt) != 2048 * 512) {
+		snprintf(buf, sizeof(buf), "%lu", fdisk_get_grain_size(cxt));
+		rc = fdisk_script_set_header(dp, "grain", buf);
+	}
+
+	if (!rc) {
+		snprintf(buf, sizeof(buf), "%lu", fdisk_get_sector_size(cxt));
+		rc = fdisk_script_set_header(dp, "sector-size", buf);
+	}
+
+	DBG(SCRIPT, ul_debugobj(dp, "read context done [rc=%d]", rc));
+	return rc;
+}
+
+/**
+ * fdisk_script_enable_json:
+ * @dp: script
+ * @json: 0 or 1
+ *
+ * Disable/Enable JSON output format.
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_script_enable_json(struct fdisk_script *dp, int json)
+{
+	assert(dp);
+
+	dp->json = json;
+	return 0;
+}
+
+static int write_file_json(struct fdisk_script *dp, FILE *f)
+{
+	struct list_head *h;
+	struct fdisk_partition *pa;
+	struct fdisk_iter itr;
+	const char *devname = NULL;
+	int ct = 0;
+	struct ul_jsonwrt json;
+
+	assert(dp);
+	assert(f);
+
+	DBG(SCRIPT, ul_debugobj(dp, "writing json dump to file"));
+
+	ul_jsonwrt_init(&json, f, 0);
+	ul_jsonwrt_root_open(&json);
+
+	ul_jsonwrt_object_open(&json, "partitiontable");
+
+	/* script headers */
+	list_for_each(h, &dp->headers) {
+		struct fdisk_scriptheader *fi = list_entry(h, struct fdisk_scriptheader, headers);
+		const char *name = fi->name;
+		int num = 0;
+
+		if (strcmp(name, "first-lba") == 0) {
+			name = "firstlba";
+			num = 1;
+		} else if (strcmp(name, "last-lba") == 0) {
+			name = "lastlba";
+			num = 1;
+		} else if (strcmp(name, "sector-size") == 0) {
+			name = "sectorsize";
+			num = 1;
+		} else if (strcmp(name, "label-id") == 0)
+			name = "id";
+
+		if (num)
+			ul_jsonwrt_value_raw(&json, name, fi->data);
+		else
+			ul_jsonwrt_value_s(&json, name, fi->data);
+
+		if (strcmp(name, "device") == 0)
+			devname = fi->data;
+	}
+
+
+	if (!dp->table || fdisk_table_is_empty(dp->table)) {
+		DBG(SCRIPT, ul_debugobj(dp, "script table empty"));
+		goto done;
+	}
+
+	DBG(SCRIPT, ul_debugobj(dp, "%zu entries", fdisk_table_get_nents(dp->table)));
+
+	ul_jsonwrt_array_open(&json, "partitions");
+
+	fdisk_reset_iter(&itr, FDISK_ITER_FORWARD);
+	while (fdisk_table_next_partition(dp->table, &itr, &pa) == 0) {
+		char *p = NULL;
+
+		ct++;
+		ul_jsonwrt_object_open(&json, NULL);
+		if (devname)
+			p = fdisk_partname(devname, pa->partno + 1);
+		if (p) {
+			DBG(SCRIPT, ul_debugobj(dp, "write %s entry", p));
+			ul_jsonwrt_value_s(&json, "node", p);
+			free(p);
+		}
+
+		if (fdisk_partition_has_start(pa))
+			ul_jsonwrt_value_u64(&json, "start", (uintmax_t)pa->start);
+
+		if (fdisk_partition_has_size(pa))
+			ul_jsonwrt_value_u64(&json, "size", (uintmax_t)pa->size);
+
+		if (pa->type && fdisk_parttype_get_string(pa->type))
+			ul_jsonwrt_value_s(&json, "type", fdisk_parttype_get_string(pa->type));
+
+		else if (pa->type) {
+			ul_jsonwrt_value_open(&json, "type");
+			fprintf(f, "\"%x\"", fdisk_parttype_get_code(pa->type));
+			ul_jsonwrt_value_close(&json);
+		}
+
+		if (pa->uuid)
+			ul_jsonwrt_value_s(&json, "uuid", pa->uuid);
+		if (pa->name && *pa->name)
+			ul_jsonwrt_value_s(&json, "name", pa->name);
+
+		/* for MBR attr=80 means bootable */
+		if (pa->attrs) {
+			struct fdisk_label *lb = script_get_label(dp);
+
+			if (!lb || fdisk_label_get_type(lb) != FDISK_DISKLABEL_DOS)
+				ul_jsonwrt_value_s(&json, "attrs", pa->attrs);
+		}
+
+		if (fdisk_partition_is_bootable(pa))
+			ul_jsonwrt_value_boolean(&json, "bootable", 1);
+		ul_jsonwrt_object_close(&json);
+	}
+
+	ul_jsonwrt_array_close(&json);
+done:
+	ul_jsonwrt_object_close(&json);
+	ul_jsonwrt_root_close(&json);
+
+	DBG(SCRIPT, ul_debugobj(dp, "write script done"));
+	return 0;
+}
+
+static int write_file_sfdisk(struct fdisk_script *dp, FILE *f)
+{
+	struct list_head *h;
+	struct fdisk_partition *pa;
+	struct fdisk_iter itr;
+	const char *devname = NULL;
+
+	assert(dp);
+	assert(f);
+
+	DBG(SCRIPT, ul_debugobj(dp, "writing sfdisk-like script to file"));
+
+	/* script headers */
+	list_for_each(h, &dp->headers) {
+		struct fdisk_scriptheader *fi = list_entry(h, struct fdisk_scriptheader, headers);
+		fprintf(f, "%s: %s\n", fi->name, fi->data);
+		if (strcmp(fi->name, "device") == 0)
+			devname = fi->data;
+	}
+
+	if (!dp->table || fdisk_table_is_empty(dp->table)) {
+		DBG(SCRIPT, ul_debugobj(dp, "script table empty"));
+		return 0;
+	}
+
+	DBG(SCRIPT, ul_debugobj(dp, "%zu entries", fdisk_table_get_nents(dp->table)));
+
+	fputc('\n', f);
+
+	fdisk_reset_iter(&itr, FDISK_ITER_FORWARD);
+	while (fdisk_table_next_partition(dp->table, &itr, &pa) == 0) {
+		char *p = NULL;
+
+		if (devname)
+			p = fdisk_partname(devname, pa->partno + 1);
+		if (p) {
+			DBG(SCRIPT, ul_debugobj(dp, "write %s entry", p));
+			fprintf(f, "%s :", p);
+			free(p);
+		} else
+			fprintf(f, "%zu :", pa->partno + 1);
+
+		if (fdisk_partition_has_start(pa))
+			fprintf(f, " start=%12ju", (uintmax_t)pa->start);
+		if (fdisk_partition_has_size(pa))
+			fprintf(f, ", size=%12ju", (uintmax_t)pa->size);
+
+		if (pa->type && fdisk_parttype_get_string(pa->type))
+			fprintf(f, ", type=%s", fdisk_parttype_get_string(pa->type));
+		else if (pa->type)
+			fprintf(f, ", type=%x", fdisk_parttype_get_code(pa->type));
+
+		if (pa->uuid)
+			fprintf(f, ", uuid=%s", pa->uuid);
+		if (pa->name && *pa->name) {
+			fputs(", name=", f);
+			fputs_quoted(pa->name, f);
+		}
+
+		/* for MBR attr=80 means bootable */
+		if (pa->attrs) {
+			struct fdisk_label *lb = script_get_label(dp);
+
+			if (!lb || fdisk_label_get_type(lb) != FDISK_DISKLABEL_DOS)
+				fprintf(f, ", attrs=\"%s\"", pa->attrs);
+		}
+		if (fdisk_partition_is_bootable(pa))
+			fprintf(f, ", bootable");
+		fputc('\n', f);
+	}
+
+	DBG(SCRIPT, ul_debugobj(dp, "write script done"));
+	return 0;
+}
+
+/**
+ * fdisk_script_write_file:
+ * @dp: script
+ * @f: output file
+ *
+ * Writes script @dp to the file @f.
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_script_write_file(struct fdisk_script *dp, FILE *f)
+{
+	assert(dp);
+
+	if (dp->json)
+		return write_file_json(dp, f);
+
+	return write_file_sfdisk(dp, f);
+}
+
+static inline int is_header_line(const char *s)
+{
+	const char *p = strchr(s, ':');
+
+	if (!p || p == s || !*(p + 1) || strchr(s, '='))
+		return 0;
+
+	return 1;
+}
+
+/* parses "<name>: value", note modifies @s*/
+static int parse_line_header(struct fdisk_script *dp, char *s)
+{
+	size_t i;
+	char *name, *value;
+	static const char *supported[] = {
+		"label", "unit", "label-id", "device", "grain",
+		"first-lba", "last-lba", "table-length", "sector-size"
+	};
+
+	DBG(SCRIPT, ul_debugobj(dp, "   parse header '%s'", s));
+
+	if (!s || !*s)
+		return -EINVAL;
+
+	name = s;
+	value = strchr(s, ':');
+	if (!value)
+		return -EINVAL;
+	*value = '\0';
+	value++;
+
+	ltrim_whitespace((unsigned char *) name);
+	rtrim_whitespace((unsigned char *) name);
+	ltrim_whitespace((unsigned char *) value);
+	rtrim_whitespace((unsigned char *) value);
+
+	if (!*name || !*value)
+		return -EINVAL;
+
+	/* check header name */
+	for (i = 0; i < ARRAY_SIZE(supported); i++) {
+		if (strcmp(name, supported[i]) == 0)
+			break;
+	}
+	if (i == ARRAY_SIZE(supported))
+		return -ENOTSUP;
+
+	/* header specific actions */
+	if (strcmp(name, "label") == 0) {
+		if (dp->cxt && !fdisk_get_label(dp->cxt, value))
+			return -EINVAL;			/* unknown label name */
+		dp->force_label = 1;
+
+	} else if (strcmp(name, "unit") == 0) {
+		if (strcmp(value, "sectors") != 0)
+			return -EINVAL;			/* only "sectors" supported */
+
+	}
+
+	return fdisk_script_set_header(dp, name, value);
+}
+
+static int partno_from_devname(char *s)
+{
+	intmax_t num;
+	size_t sz;
+	char *end, *p;
+
+	if (!s || !*s)
+		return -1;
+
+	sz = rtrim_whitespace((unsigned char *)s);
+	end = p = s + sz;
+
+	while (p > s && isdigit(*(p - 1)))
+		p--;
+	if (p == end)
+		return -1;
+	end = NULL;
+	errno = 0;
+	num = strtol(p, &end, 10);
+	if (errno || !end || p == end)
+		return -1;
+
+	if (num < INT32_MIN || num > INT32_MAX) {
+		errno = ERANGE;
+		return -1;
+	}
+	return num - 1;
+}
+
+
+/* returns zero terminated string with next token and @str is updated */
+static char *next_token(char **str)
+{
+	char *tk_begin = NULL,
+	     *tk_end = NULL,
+	     *end = NULL,
+	     *p;
+	int open_quote = 0, terminated = 0;
+
+	for (p = *str; p && *p; p++) {
+		if (!tk_begin) {
+			if (isblank(*p))
+				continue;
+			tk_begin = *p == '"' ? p + 1 : p;
+		}
+		if (*p == '"')
+			open_quote ^= 1;
+		if (open_quote)
+			continue;
+		if (isblank(*p) || *p == ',' || *p == ';' || *p == '"' )
+			tk_end = p;
+		else if (*(p + 1) == '\0')
+			tk_end = p + 1;
+		if (tk_begin && tk_end)
+			break;
+	}
+
+	if (!tk_end)
+		return NULL;
+
+	end = tk_end;
+
+	/* skip closing quotes */
+	if (*end == '"')
+		end++;
+
+	/* token is terminated by blank (or blank is before "," or ";") */
+	if (isblank(*end)) {
+		end = (char *) skip_blank(end);
+		terminated++;
+	}
+
+	/* token is terminated by "," or ";" */
+	if (*end == ',' || *end == ';') {
+		end++;
+		terminated++;
+
+	/* token is terminated by \0 */
+	} else if (!*end)
+		terminated++;
+
+	if (!terminated) {
+		DBG(SCRIPT, ul_debug("unterminated token '%s'", end));
+		return NULL;
+	}
+
+	/* skip extra space after terminator */
+	end = (char *) skip_blank(end);
+
+	*tk_end = '\0';
+	*str = end;
+	return tk_begin;
+}
+
+/*
+ * "[-]<,;>"
+ * "[ ]<,;>"
+ * "- <value>"
+ */
+static int is_default_value(char **str)
+{
+	char *p = (char *) skip_blank(*str);
+	int blank = 0;
+
+	if (*p == '-') {
+		char *x = ++p;
+		p = (char *) skip_blank(x);
+		blank = x < p;			/* "- " */
+	}
+
+	if (*p == ';' || *p == ',') {
+		*str = ++p;
+		return 1;
+	}
+	if (*p == '\0' || blank) {
+		*str = p;
+		return 1;
+	}
+
+	return 0;
+}
+
+static int next_string(char **s, char **str)
+{
+	char *tk, *p = NULL;
+	int rc = -EINVAL;
+
+	assert(s);
+	assert(str);
+
+	tk = next_token(s);
+	if (tk) {
+		p = strdup(tk);
+		rc = p ? 0 : -ENOMEM;
+	}
+
+	*str = p;
+	return rc;
+}
+
+static int skip_optional_sign(char **str)
+{
+	char *p = (char *) skip_blank(*str);
+
+	if (*p == '-' || *p == '+') {
+		*str = p+1;
+		return *p;
+	}
+	return 0;
+}
+
+static int parse_start_value(struct fdisk_script *dp, struct fdisk_partition *pa, char **str)
+{
+	char *tk;
+	int rc = 0;
+
+	assert(str);
+
+	if (is_default_value(str)) {
+		fdisk_partition_start_follow_default(pa, 1);
+		return 0;
+	}
+
+	tk = next_token(str);
+	if (!tk)
+		return -EINVAL;
+
+	if (strcmp(tk, "+") == 0) {
+		fdisk_partition_start_follow_default(pa, 1);
+		pa->movestart = FDISK_MOVE_DOWN;
+	} else {
+		int pow = 0, sign = skip_optional_sign(&tk);
+		uint64_t num;
+
+		rc = parse_size(tk, (uintmax_t *) &num, &pow);
+		if (!rc) {
+			if (pow) {	/* specified as <num><suffix> */
+				if (!dp->cxt->sector_size) {
+					rc = -EINVAL;
+					goto done;
+				}
+				num /= dp->cxt->sector_size;
+			}
+			fdisk_partition_set_start(pa, num);
+
+			pa->movestart = sign == '-' ? FDISK_MOVE_DOWN :
+					sign == '+' ? FDISK_MOVE_UP :
+						      FDISK_MOVE_NONE;
+		}
+		fdisk_partition_start_follow_default(pa, 0);
+	}
+
+done:
+	DBG(SCRIPT, ul_debugobj(dp, "  start parse result: rc=%d, move=%s, start=%ju, default=%s",
+				rc, pa->movestart == FDISK_MOVE_DOWN ? "down" :
+				    pa->movestart == FDISK_MOVE_UP ? "up" : "none",
+				    pa->start,
+				    pa->start_follow_default ? "on" : "off"));
+	return rc;
+}
+
+static int parse_size_value(struct fdisk_script *dp, struct fdisk_partition *pa, char **str)
+{
+	char *tk;
+	int rc = 0;
+
+	if (is_default_value(str)) {
+		fdisk_partition_end_follow_default(pa, 1);
+		return 0;
+	}
+
+	tk = next_token(str);
+	if (!tk)
+		return -EINVAL;
+
+	if (strcmp(tk, "+") == 0) {
+		fdisk_partition_end_follow_default(pa, 1);
+		pa->resize = FDISK_RESIZE_ENLARGE;
+	} else {
+		/* '[+-]<number>[<suffix] */
+		int pow = 0, sign = skip_optional_sign(&tk);
+		uint64_t num;
+
+		rc = parse_size(tk, (uintmax_t *) &num, &pow);
+		if (!rc) {
+			if (pow) { /* specified as <size><suffix> */
+				if (!dp->cxt->sector_size) {
+					rc = -EINVAL;
+					goto done;
+				}
+				num /= dp->cxt->sector_size;
+			} else	 /* specified as number of sectors */
+				fdisk_partition_size_explicit(pa, 1);
+
+			fdisk_partition_set_size(pa, num);
+			pa->resize = sign == '-' ? FDISK_RESIZE_REDUCE :
+				     sign == '+' ? FDISK_RESIZE_ENLARGE :
+						   FDISK_RESIZE_NONE;
+		}
+		fdisk_partition_end_follow_default(pa, 0);
+	}
+
+done:
+	DBG(SCRIPT, ul_debugobj(dp, "  size parse result: rc=%d, move=%s, size=%ju, default=%s",
+				rc, pa->resize == FDISK_RESIZE_REDUCE ? "reduce" :
+				    pa->resize == FDISK_RESIZE_ENLARGE ? "enlage" : "none",
+				    pa->size,
+				    pa->end_follow_default ? "on" : "off"));
+	return rc;
+}
+
+
+#define FDISK_SCRIPT_PARTTYPE_PARSE_FLAGS \
+	(FDISK_PARTTYPE_PARSE_DATA | FDISK_PARTTYPE_PARSE_DATALAST | \
+	 FDISK_PARTTYPE_PARSE_SHORTCUT | FDISK_PARTTYPE_PARSE_ALIAS | \
+	 FDISK_PARTTYPE_PARSE_NAME | \
+	 FDISK_PARTTYPE_PARSE_DEPRECATED)
+
+/* dump format
+ * <device>: start=<num>, size=<num>, type=<string>, ...
+ */
+static int parse_line_nameval(struct fdisk_script *dp, char *s)
+{
+	char *p, *x;
+	struct fdisk_partition *pa;
+	int rc = 0;
+	int pno;
+
+	assert(dp);
+	assert(s);
+	assert(dp->table);
+
+	DBG(SCRIPT, ul_debugobj(dp, "   parse script line: '%s'", s));
+
+	pa = fdisk_new_partition();
+	if (!pa)
+		return -ENOMEM;
+
+	fdisk_partition_start_follow_default(pa, 1);
+	fdisk_partition_end_follow_default(pa, 1);
+	fdisk_partition_partno_follow_default(pa, 1);
+
+	/* set partno */
+	p = strchr(s, ':');
+	x = strchr(s, '=');
+	if (p && (!x || p < x)) {
+		*p = '\0';
+		p++;
+
+		pno = partno_from_devname(s);
+		if (pno >= 0) {
+			fdisk_partition_partno_follow_default(pa, 0);
+			fdisk_partition_set_partno(pa, pno);
+		}
+	} else
+		p = s;
+
+	while (rc == 0 && p && *p) {
+
+		DBG(SCRIPT, ul_debugobj(dp, " parsing '%s'", p));
+		p = (char *) skip_blank(p);
+
+		if (!strncasecmp(p, "start=", 6)) {
+			p += 6;
+			rc = parse_start_value(dp, pa, &p);
+
+		} else if (!strncasecmp(p, "size=", 5)) {
+			p += 5;
+			rc = parse_size_value(dp, pa, &p);
+
+		} else if (!strncasecmp(p, "bootable", 8)) {
+			/* we use next_token() to skip possible extra space */
+			char *tk = next_token(&p);
+			if (tk && strcasecmp(tk, "bootable") == 0)
+				pa->boot = 1;
+			else
+				rc = -EINVAL;
+
+		} else if (!strncasecmp(p, "attrs=", 6)) {
+			p += 6;
+			free(pa->attrs);
+			rc = next_string(&p, &pa->attrs);
+
+		} else if (!strncasecmp(p, "uuid=", 5)) {
+			p += 5;
+			free(pa->uuid);
+			rc = next_string(&p, &pa->uuid);
+
+		} else if (!strncasecmp(p, "name=", 5)) {
+			p += 5;
+			free(pa->name);
+			rc = next_string(&p, &pa->name);
+			if (!rc)
+				unhexmangle_string(pa->name);
+
+		} else if (!strncasecmp(p, "type=", 5) ||
+			   !strncasecmp(p, "Id=", 3)) {		/* backward compatibility */
+			char *type = NULL;
+
+			fdisk_unref_parttype(pa->type);
+			pa->type = NULL;
+
+			p += ((*p == 'I' || *p == 'i') ? 3 : 5); /* "Id=", "type=" */
+
+			rc = next_string(&p, &type);
+			if (rc == 0) {
+				pa->type = fdisk_label_advparse_parttype(script_get_label(dp),
+					type, FDISK_SCRIPT_PARTTYPE_PARSE_FLAGS);
+				if (!pa->type)
+					rc = -EINVAL;
+			}
+			free(type);
+		} else {
+			DBG(SCRIPT, ul_debugobj(dp, "script parse error: unknown field '%s'", p));
+			rc = -EINVAL;
+			break;
+		}
+	}
+
+	if (!rc)
+		rc = fdisk_table_add_partition(dp->table, pa);
+	if (rc)
+		DBG(SCRIPT, ul_debugobj(dp, "script parse error: [rc=%d]", rc));
+
+	fdisk_unref_partition(pa);
+	return rc;
+}
+
+/* simple format:
+ * <start>, <size>, <type>, <bootable>, ...
+ */
+static int parse_line_valcommas(struct fdisk_script *dp, char *s)
+{
+	int rc = 0;
+	char *p = s;
+	struct fdisk_partition *pa;
+	enum { ITEM_START, ITEM_SIZE, ITEM_TYPE, ITEM_BOOTABLE };
+	int item = -1;
+
+	assert(dp);
+	assert(s);
+	assert(dp->table);
+
+	pa = fdisk_new_partition();
+	if (!pa)
+		return -ENOMEM;
+
+	fdisk_partition_start_follow_default(pa, 1);
+	fdisk_partition_end_follow_default(pa, 1);
+	fdisk_partition_partno_follow_default(pa, 1);
+
+	while (rc == 0 && p && *p) {
+		char *begin;
+
+		p = (char *) skip_blank(p);
+		item++;
+
+		DBG(SCRIPT, ul_debugobj(dp, " parsing item %d ('%s')", item, p));
+		begin = p;
+
+		switch (item) {
+		case ITEM_START:
+			rc = parse_start_value(dp, pa, &p);
+			break;
+		case ITEM_SIZE:
+			rc = parse_size_value(dp, pa, &p);
+			break;
+		case ITEM_TYPE:
+		{
+			char *str = NULL;
+
+			fdisk_unref_parttype(pa->type);
+			pa->type = NULL;
+
+			if (*p == ',' || *p == ';' || is_default_value(&p))
+				break;	/* use default type */
+
+			rc = next_string(&p, &str);
+			if (rc)
+				break;
+
+			pa->type = fdisk_label_advparse_parttype(script_get_label(dp),
+						str, FDISK_SCRIPT_PARTTYPE_PARSE_FLAGS);
+			free(str);
+			if (!pa->type)
+				rc = -EINVAL;
+			break;
+		}
+		case ITEM_BOOTABLE:
+			if (*p == ',' || *p == ';')
+				break;
+			else {
+				char *tk = next_token(&p);
+				if (tk && *tk == '*' && *(tk + 1) == '\0')
+					pa->boot = 1;
+				else if (tk && *tk == '-' && *(tk + 1) == '\0')
+					pa->boot = 0;
+				else if (tk && *tk == '+' && *(tk + 1) == '\0')
+					pa->boot = 1;
+				else
+					rc = -EINVAL;
+			}
+			break;
+		default:
+			break;
+		}
+
+		if (begin == p)
+			p++;
+	}
+
+	if (!rc)
+		rc = fdisk_table_add_partition(dp->table, pa);
+	if (rc)
+		DBG(SCRIPT, ul_debugobj(dp, "script parse error: [rc=%d]", rc));
+
+	fdisk_unref_partition(pa);
+	return rc;
+}
+
+/* modifies @s ! */
+static int fdisk_script_read_buffer(struct fdisk_script *dp, char *s)
+{
+	int rc = 0;
+
+	assert(dp);
+	assert(s);
+
+	DBG(SCRIPT, ul_debugobj(dp, "  parsing buffer"));
+
+	s = (char *) skip_blank(s);
+	if (!s || !*s)
+		return 0;	/* nothing baby, ignore */
+
+	if (!dp->table && fdisk_script_get_table(dp) == NULL)
+		return -ENOMEM;
+
+	/* parse header lines only if no partition specified yet */
+	if (fdisk_table_is_empty(dp->table) && is_header_line(s))
+		rc = parse_line_header(dp, s);
+
+	/* parse script format */
+	else if (strchr(s, '='))
+		rc = parse_line_nameval(dp, s);
+
+	/* parse simple <value>, ... format */
+	else
+		rc = parse_line_valcommas(dp, s);
+
+	if (rc)
+		DBG(SCRIPT, ul_debugobj(dp, "%zu: parse error [rc=%d]",
+				dp->nlines, rc));
+	return rc;
+}
+
+/**
+ * fdisk_script_set_fgets:
+ * @dp: script
+ * @fn_fgets: callback function
+ *
+ * The library uses fgets() function to read the next line from the script.
+ * This default maybe overridden by another function. Note that the function has
+ * to return the line terminated by \n (for example readline(3) removes \n).
+ *
+ * Return: 0 on success, <0 on error
+ */
+int fdisk_script_set_fgets(struct fdisk_script *dp,
+			  char *(*fn_fgets)(struct fdisk_script *, char *, size_t, FILE *))
+{
+	assert(dp);
+
+	dp->fn_fgets = fn_fgets;
+	return 0;
+}
+
+/**
+ * fdisk_script_read_line:
+ * @dp: script
+ * @f: file
+ * @buf: buffer to store one line of the file
+ * @bufsz: buffer size
+ *
+ * Reads next line into dump.
+ *
+ * Returns: 0 on success, <0 on error, 1 when nothing to read. For unknown headers
+ *          returns -ENOTSUP, it's usually safe to ignore this error.
+ */
+int fdisk_script_read_line(struct fdisk_script *dp, FILE *f, char *buf, size_t bufsz)
+{
+	char *s;
+
+	assert(dp);
+	assert(f);
+	assert(bufsz);
+
+	DBG(SCRIPT, ul_debugobj(dp, " parsing line %zu", dp->nlines));
+
+	/* read the next non-blank non-comment line */
+	do {
+		buf[0] = '\0';
+		if (dp->fn_fgets) {
+			if (dp->fn_fgets(dp, buf, bufsz, f) == NULL)
+				return 1;
+		} else if (fgets(buf, bufsz, f) == NULL)
+			return 1;
+
+		dp->nlines++;
+		s = strchr(buf, '\n');
+		if (!s) {
+			/* Missing final newline?  Otherwise an extremely */
+			/* long line - assume file was corrupted */
+			if (feof(f)) {
+				DBG(SCRIPT, ul_debugobj(dp, "no final newline"));
+				s = strchr(buf, '\0');
+			} else {
+				DBG(SCRIPT, ul_debugobj(dp,
+					"%zu: missing newline at line", dp->nlines));
+				return -EINVAL;
+			}
+		}
+
+		*s = '\0';
+		if (--s >= buf && *s == '\r')
+			*s = '\0';
+		s = (char *) skip_blank(buf);
+	} while (*s == '\0' || *s == '#');
+
+	return fdisk_script_read_buffer(dp, s);
+}
+
+
+/**
+ * fdisk_script_read_file:
+ * @dp: script
+ * @f: input file
+ *
+ * Reads file @f into script @dp.
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_script_read_file(struct fdisk_script *dp, FILE *f)
+{
+	char buf[BUFSIZ] = { '\0' };
+	int rc = 1;
+
+	assert(dp);
+	assert(f);
+
+	DBG(SCRIPT, ul_debugobj(dp, "parsing file"));
+
+	while (!feof(f)) {
+		rc = fdisk_script_read_line(dp, f, buf, sizeof(buf));
+		if (rc && rc != -ENOTSUP)
+			break;
+	}
+
+	if (rc == 1)
+		rc = 0;		/* end of file */
+
+	DBG(SCRIPT, ul_debugobj(dp, "parsing file done [rc=%d]", rc));
+	return rc;
+}
+
+/**
+ * fdisk_set_script:
+ * @cxt: context
+ * @dp: script (or NULL to remove previous reference)
+ *
+ * Sets reference to the @dp script and remove reference to the previously used
+ * script.
+ *
+ * The script headers might be used by label drivers to overwrite
+ * built-in defaults (for example disk label Id) and label driver might
+ * optimize the default semantic to be more usable for scripts (for example to
+ * not ask for primary/logical/extended partition type).
+ *
+ * Note that script also contains reference to the fdisk context (see
+ * fdisk_new_script()). This context may be completely independent on
+ * context used for fdisk_set_script().
+ *
+ * Don't forget to call fdisk_set_script(cxt, NULL); to remove this reference
+ * if no more necessary!
+ *
+ * Returns: <0 on error, 0 on success.
+ */
+int fdisk_set_script(struct fdisk_context *cxt, struct fdisk_script *dp)
+{
+	assert(cxt);
+
+	/* unref old */
+	if (cxt->script)
+		fdisk_unref_script(cxt->script);
+
+	/* ref new */
+	cxt->script = dp;
+	if (cxt->script) {
+		DBG(CXT, ul_debugobj(cxt, "setting reference to script %p", cxt->script));
+		fdisk_ref_script(cxt->script);
+	}
+
+	return 0;
+}
+
+/**
+ * fdisk_get_script:
+ * @cxt: context
+ *
+ * Returns: the current script or NULL.
+ */
+struct fdisk_script *fdisk_get_script(struct fdisk_context *cxt)
+{
+	assert(cxt);
+	return cxt->script;
+}
+
+/**
+ * fdisk_apply_script_headers:
+ * @cxt: context
+ * @dp: script
+ *
+ * Associate context @cxt with script @dp and creates a new empty disklabel.
+ * The script may be later unreference by fdisk_set_script() with NULL as script.
+ *
+ * Returns: 0 on success, <0 on error.
+ */
+int fdisk_apply_script_headers(struct fdisk_context *cxt, struct fdisk_script *dp)
+{
+	const char *name;
+	const char *str;
+	int rc;
+
+	assert(cxt);
+	assert(dp);
+
+	DBG(SCRIPT, ul_debugobj(dp, "applying script headers"));
+	fdisk_set_script(cxt, dp);
+
+	str = fdisk_script_get_header(dp, "grain");
+	if (str) {
+		uintmax_t sz;
+
+		rc = parse_size(str, &sz, NULL);
+		if (rc == 0)
+			rc = fdisk_save_user_grain(cxt, sz);
+		if (rc)
+			return rc;
+	}
+
+	if (fdisk_has_user_device_properties(cxt))
+		fdisk_apply_user_device_properties(cxt);
+
+	/* create empty label */
+	name = fdisk_script_get_header(dp, "label");
+	if (!name)
+		return -EINVAL;
+
+	rc = fdisk_create_disklabel(cxt, name);
+	if (rc)
+		return rc;
+
+	str = fdisk_script_get_header(dp, "table-length");
+	if (str) {
+		uintmax_t sz;
+
+		rc = parse_size(str, &sz, NULL);
+		if (rc == 0)
+			rc = fdisk_gpt_set_npartitions(cxt, sz);
+	}
+
+	return rc;
+}
+
+/**
+ * fdisk_apply_script:
+ * @cxt: context
+ * @dp: script
+ *
+ * This function creates a new disklabel and partition within context @cxt. You
+ * have to call fdisk_write_disklabel() to apply changes to the device.
+ *
+ * Returns: 0 on error, <0 on error.
+ */
+int fdisk_apply_script(struct fdisk_context *cxt, struct fdisk_script *dp)
+{
+	int rc;
+	struct fdisk_script *old;
+
+	assert(dp);
+	assert(cxt);
+
+	DBG(CXT, ul_debugobj(cxt, "applying script %p", dp));
+
+	old = fdisk_get_script(cxt);
+	fdisk_ref_script(old);
+
+	/* create empty disk label */
+	rc = fdisk_apply_script_headers(cxt, dp);
+
+	/* create partitions */
+	if (!rc && dp->table)
+		rc = fdisk_apply_table(cxt, dp->table);
+
+	fdisk_set_script(cxt, old);
+	fdisk_unref_script(old);
+
+	DBG(CXT, ul_debugobj(cxt, "script done [rc=%d]", rc));
+	return rc;
+}
+
+#ifdef FUZZ_TARGET
+# include "all-io.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+	char name[] = "/tmp/test-script-fuzz.XXXXXX";
+	int fd;
+	struct fdisk_script *dp;
+	struct fdisk_context *cxt;
+	FILE *f;
+
+	fd = mkstemp_cloexec(name);
+	if (fd < 0)
+		err(EXIT_FAILURE, "mkstemp() failed");
+	if (write_all(fd, data, size) != 0)
+		err(EXIT_FAILURE, "write() failed");
+	f = fopen(name, "r");
+	if (!f)
+		err(EXIT_FAILURE, "cannot open %s", name);
+
+	cxt = fdisk_new_context();
+	dp = fdisk_new_script(cxt);
+
+	fdisk_script_read_file(dp, f);
+	fclose(f);
+
+	fdisk_script_write_file(dp, stdout);
+	fdisk_unref_script(dp);
+	fdisk_unref_context(cxt);
+
+	close(fd);
+	unlink(name);
+
+	return 0;
+}
+#endif
+
+#ifdef TEST_PROGRAM
+static int test_dump(struct fdisk_test *ts, int argc, char *argv[])
+{
+	char *devname = argv[1];
+	struct fdisk_context *cxt;
+	struct fdisk_script *dp;
+
+	cxt = fdisk_new_context();
+	fdisk_assign_device(cxt, devname, 1);
+
+	dp = fdisk_new_script(cxt);
+	fdisk_script_read_context(dp, NULL);
+
+	fdisk_script_write_file(dp, stdout);
+	fdisk_unref_script(dp);
+	fdisk_unref_context(cxt);
+
+	return 0;
+}
+
+static int test_read(struct fdisk_test *ts, int argc, char *argv[])
+{
+	char *filename = argv[1];
+	struct fdisk_script *dp;
+	struct fdisk_context *cxt;
+	FILE *f;
+
+	if (!(f = fopen(filename, "r")))
+		err(EXIT_FAILURE, "%s: cannot open", filename);
+
+	cxt = fdisk_new_context();
+	dp = fdisk_new_script(cxt);
+
+	fdisk_script_read_file(dp, f);
+	fclose(f);
+
+	fdisk_script_write_file(dp, stdout);
+	fdisk_unref_script(dp);
+	fdisk_unref_context(cxt);
+
+	return 0;
+}
+
+static int test_stdin(struct fdisk_test *ts, int argc, char *argv[])
+{
+	char buf[BUFSIZ] = { '\0' };
+	struct fdisk_script *dp;
+	struct fdisk_context *cxt;
+	int rc = 0;
+
+	cxt = fdisk_new_context();
+	dp = fdisk_new_script(cxt);
+	fdisk_script_set_header(dp, "label", "dos");
+
+	printf("<start>, <size>, <type>, <bootable: *|->\n");
+	do {
+		struct fdisk_partition *pa;
+		size_t n = dp->table ? fdisk_table_get_nents(dp->table) : 0;
+
+		printf(" #%zu :\n", n + 1);
+		rc = fdisk_script_read_line(dp, stdin, buf, sizeof(buf));
+
+		if (rc == 0) {
+			pa = fdisk_table_get_partition(dp->table, n);
+			printf(" #%zu  %12ju %12ju\n",	n + 1,
+						(uintmax_t)fdisk_partition_get_start(pa),
+						(uintmax_t)fdisk_partition_get_size(pa));
+		}
+	} while (rc == 0);
+
+	if (!rc)
+		fdisk_script_write_file(dp, stdout);
+	fdisk_unref_script(dp);
+	fdisk_unref_context(cxt);
+
+	return rc;
+}
+
+static int test_apply(struct fdisk_test *ts, int argc, char *argv[])
+{
+	char *devname = argv[1], *scriptname = argv[2];
+	struct fdisk_context *cxt;
+	struct fdisk_script *dp;
+	struct fdisk_table *tb = NULL;
+	struct fdisk_iter *itr = NULL;
+	struct fdisk_partition *pa = NULL;
+	int rc;
+
+	cxt = fdisk_new_context();
+	fdisk_assign_device(cxt, devname, 0);
+
+	dp = fdisk_new_script_from_file(cxt, scriptname);
+	if (!dp)
+		return -errno;
+
+	rc = fdisk_apply_script(cxt, dp);
+	if (rc)
+		goto done;
+	fdisk_unref_script(dp);
+
+	/* list result */
+	fdisk_list_disklabel(cxt);
+	fdisk_get_partitions(cxt, &tb);
+
+	itr = fdisk_new_iter(FDISK_ITER_FORWARD);
+	while (fdisk_table_next_partition(tb, itr, &pa) == 0) {
+		printf(" #%zu  %12ju %12ju\n",	fdisk_partition_get_partno(pa),
+						(uintmax_t)fdisk_partition_get_start(pa),
+						(uintmax_t)fdisk_partition_get_size(pa));
+	}
+
+done:
+	fdisk_free_iter(itr);
+	fdisk_unref_table(tb);
+
+	/*fdisk_write_disklabel(cxt);*/
+	fdisk_unref_context(cxt);
+	return 0;
+}
+
+static int test_tokens(struct fdisk_test *ts, int argc, char *argv[])
+{
+	char *p, *str = argc == 2 ? strdup(argv[1]) : NULL;
+	int i;
+
+	for (i = 1, p = str; p && *p; i++) {
+		char *tk = next_token(&p);
+
+		if (!tk)
+			break;
+
+		printf("#%d: '%s'\n", i, tk);
+	}
+
+	free(str);
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	struct fdisk_test tss[] = {
+	{ "--dump",    test_dump,    "<device>            dump PT as script" },
+	{ "--read",    test_read,    "<file>              read PT script from file" },
+	{ "--apply",   test_apply,   "<device> <file>     try apply script from file to device" },
+	{ "--stdin",   test_stdin,   "                    read input like sfdisk" },
+	{ "--tokens",  test_tokens,  "<string>            parse string" },
+	{ NULL }
+	};
+
+	return fdisk_run_test(tss, argc, argv);
+}
+
+#endif