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-rw-r--r--libfdisk/src/script.c1756
1 files changed, 1756 insertions, 0 deletions
diff --git a/libfdisk/src/script.c b/libfdisk/src/script.c
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--- /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
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-25 20:35:10 +0000