[MTD] UBI: Removed automake, autoconf, added ubi userspace headers.

Signed-off-by: Frank Haverkamp <haver@vnet.ibm.com>

1 files changed, 461 insertions, 0 deletions

diff --git a/ubi-utils/src/pfi.c b/ubi-utils/src/pfi.c
new file mode 100644
index 0000000..c8d5ee4
--- /dev/null
+++ b/ubi-utils/src/pfi.c
@@ -0,0 +1,461 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * @file pfi.c
+ *
+ * @author Oliver Lohmann
+ *	   Andreas Arnez
+ *	   Joern Engel
+ *	   Frank Haverkamp
+ *
+ * @brief libpfi holds all code to create and process pfi files.
+ *
+ * <oliloh@de.ibm.com> Wed Feb	8 11:38:22 CET 2006: Initial creation.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <syslog.h>
+#include <stdarg.h>
+#include <errno.h>
+
+#include "pfi.h"
+
+#define PFI_MAGIC     "PFI!\n"
+#define PFI_DATA      "DATA\n" /* The same size as PFI_MAGIC */
+#define PFI_MAGIC_LEN 5
+
+static const char copyright [] __attribute__((unused)) =
+	"Copyright (c) International Business Machines Corp., 2006";
+
+enum key_id {
+	/* version 1 */
+	key_version,	      /* must be index position 0! */
+	key_mode,
+	key_size,
+	key_crc,
+	key_label,
+	key_flags,
+	key_ubi_ids,
+	key_ubi_size,
+	key_ubi_type,
+	key_ubi_names,
+	key_ubi_alignment,
+	key_raw_starts,
+	key_raw_total_size,
+	num_keys,
+};
+
+struct pfi_header {
+	char defined[num_keys];	 /* reserve all possible keys even if
+				    version does not require this. */
+	int mode_no;		 /* current mode no. -> can only increase */
+	union {
+		char *str;
+		uint32_t num;
+	} value[num_keys];
+};
+
+
+#define PFI_MANDATORY	    0x0001
+#define PFI_STRING	    0x0002
+#define PFI_LISTVALUE	    0x0004	/* comma seperated list of nums */
+#define PFI_MANDATORY_UBI   0x0008
+#define PFI_MANDATORY_RAW   0x0010
+
+struct key_descriptor {
+	enum key_id id;
+	const char *name;
+	uint32_t flags;
+};
+
+static const struct key_descriptor key_desc_v1[] = {
+	{ key_version, "version", PFI_MANDATORY },
+	{ key_mode, "mode", PFI_MANDATORY | PFI_STRING },
+	{ key_size, "size", PFI_MANDATORY },
+	{ key_crc, "crc", PFI_MANDATORY },
+	{ key_label, "label", PFI_MANDATORY | PFI_STRING },
+	{ key_flags, "flags", PFI_MANDATORY },
+	{ key_ubi_ids, "ubi_ids", PFI_MANDATORY_UBI | PFI_STRING },
+	{ key_ubi_size, "ubi_size", PFI_MANDATORY_UBI },
+	{ key_ubi_type, "ubi_type", PFI_MANDATORY_UBI | PFI_STRING },
+	{ key_ubi_names, "ubi_names", PFI_MANDATORY_UBI | PFI_STRING },
+	{ key_ubi_alignment, "ubi_alignment", PFI_MANDATORY_UBI },
+	{ key_raw_starts, "raw_starts", PFI_MANDATORY_RAW | PFI_STRING },
+	{ key_raw_total_size, "raw_total_size", PFI_MANDATORY_RAW },
+};
+
+static const struct key_descriptor *key_descriptors[] = {
+	NULL,
+	key_desc_v1,					   /* version 1 */
+};
+
+static const int key_descriptors_max[] = {
+	0,						   /* version 0 */
+	sizeof(key_desc_v1)/sizeof(struct key_descriptor), /* version 1 */
+};
+
+static const char* modes[] = {"raw", "ubi", NULL}; /* order isn't arbitrary! */
+
+/* latest version contains all possible keys */
+static const struct key_descriptor *key_desc = key_desc_v1;
+
+#define PFI_IS_UBI(mode) \
+	(((mode) != NULL) && (strcmp("ubi", (mode)) == 0))
+
+#define PFI_IS_RAW(mode) \
+	(((mode) != NULL) && (strcmp("raw", (mode)) == 0))
+
+/**
+ * @return	 <0	On Error.
+ *		>=0	Mode no.
+ */
+static int
+get_mode_no(const char* mode)
+{
+	const char* ptr = modes[0];
+	int i = 0;
+	while (ptr != NULL) {
+		if(strcmp(ptr, mode) == 0) {
+			return i;
+		}
+		ptr++;
+		i++;
+	}
+
+	return -1;
+}
+
+static int
+find_key_by_name (const char *name)
+{
+	int i;
+
+	for (i = 0; i < num_keys; i++) {
+		if (strcmp(name, key_desc[i].name) == 0)
+			return i;
+	}
+	return -1;
+}
+
+static int
+check_valid (pfi_header head)
+{
+	int i;
+	int max_keys;
+	uint32_t version;
+	const char *mode;
+	const struct key_descriptor *desc;
+	uint32_t to_check = PFI_MANDATORY;
+
+	/*
+	 * For the validity check the list of possible keys depends on
+	 * the version of the PFI file used.
+	 */
+	version = head->value[key_version].num;
+	if (version > PFI_HDRVERSION)
+		return PFI_ENOHEADER;
+
+	max_keys = key_descriptors_max[version];
+	desc = key_descriptors[version];
+
+	if (!desc)
+		return PFI_ENOVERSION;
+
+	mode = head->value[key_mode].str;
+	if (PFI_IS_UBI(mode)) {
+		to_check |= PFI_MANDATORY_UBI;
+	}
+	else if (PFI_IS_RAW(mode)) {
+		to_check |= PFI_MANDATORY_RAW;
+	}
+	else { /* neither UBI nor RAW == ERR */
+		return PFI_EINSUFF;
+	}
+
+	for (i = 0; i < max_keys; i++) {
+		if ((desc[i].flags & to_check) && !head->defined[i]) {
+			fprintf(stderr, "libpfi: %s missing\n", desc[i].name);
+			return PFI_EINSUFF;
+		}
+	}
+
+	return 0;
+}
+
+int pfi_header_init (pfi_header *head)
+{
+	int i;
+	pfi_header self = (pfi_header) malloc(sizeof(*self));
+
+	*head = self;
+	if (self == NULL)
+		return PFI_ENOMEM;
+
+	/* initialize maximum number of possible keys */
+	for (i = 0; i < num_keys; i++) {
+		memset(self, 0, sizeof(*self));
+		self->defined[i] = 0;
+	}
+
+	return 0;
+}
+
+int pfi_header_destroy (pfi_header *head)
+{
+	int i;
+	pfi_header self = *head;
+
+	for (i = 0; i < num_keys; i++) {
+		if (self->defined[i] && (key_desc[i].flags & PFI_STRING) &&
+		    self->value[i].str) {
+			free(self->value[i].str);
+		}
+	}
+	free(*head);
+	*head = NULL;
+	return 0;
+}
+
+int pfi_header_setnumber (pfi_header head,
+			   const char *key, uint32_t value)
+{
+	int key_id = find_key_by_name(key);
+
+	if (key_id < 0)
+		return PFI_EUNDEF;
+
+	if (key_desc[key_id].flags & PFI_STRING)
+		return PFI_EBADTYPE;
+
+	head->value[key_id].num = value;
+	head->defined[key_id] = 1;
+	return 0;
+}
+
+int pfi_header_setvalue (pfi_header head,
+			  const char *key, const char *value)
+{
+	int key_id = find_key_by_name(key);
+
+	if ((uint32_t)value == (uint32_t)NULL)
+		return PFI_EINSUFF;
+
+	if ((key_id < 0) || (key_id >= num_keys))
+		return PFI_EUNDEF;
+
+	if (key_desc[key_id].flags & PFI_STRING) {
+		/*
+		 * The value is a string. Copy to a newly allocated
+		 * buffer. Delete the old value, if already set.
+		 */
+		size_t len = strlen(value) + 1;
+		char *old_str = NULL;
+		char *str;
+
+		old_str = head->value[key_id].str;
+		if (old_str != NULL)
+			free(old_str);
+
+		str = head->value[key_id].str = (char *) malloc(len);
+		if (str == NULL)
+			return PFI_ENOMEM;
+
+		strcpy(str, value);
+	} else {
+		int len;
+		int ret;
+		/* FIXME: here we assume that the value is always
+		   given in hex and starts with '0x'. */
+		ret = sscanf(value, "0x%x%n", &head->value[key_id].num, &len);
+		if (ret < 1 || value[len] != '\0')
+			return PFI_EBADTYPE;
+	}
+	head->defined[key_id] = 1;
+	return 0;
+}
+
+int pfi_header_getnumber (pfi_header head,
+			   const char *key, uint32_t *value)
+{
+	int key_id = find_key_by_name(key);
+
+	if (key_id < 0)
+		return PFI_EUNDEF;
+
+	if (key_desc[key_id].flags & PFI_STRING)
+		return PFI_EBADTYPE;
+
+	if (!head->defined[key_id])
+		return PFI_EUNDEF;
+
+	*value = head->value[key_id].num;
+	return 0;
+}
+
+int pfi_header_getstring (pfi_header head,
+			   const char *key, char *value, size_t size)
+{
+	int key_id = find_key_by_name(key);
+
+	if (key_id < 0)
+		return PFI_EUNDEF;
+
+	if (!(key_desc[key_id].flags & PFI_STRING))
+		return PFI_EBADTYPE;
+
+	if (!head->defined[key_id])
+		return PFI_EUNDEF;
+
+	strncpy(value, head->value[key_id].str, size-1);
+	value[size-1] = '\0';
+	return 0;
+}
+
+int pfi_header_write (FILE *out, pfi_header head)
+{
+	int i;
+	int ret;
+
+	pfi_header_setnumber(head, "version", PFI_HDRVERSION);
+
+	if ((ret = check_valid(head)) != 0)
+		return ret;
+
+	/* OK.	Now write the header. */
+
+	ret = fwrite(PFI_MAGIC, 1, PFI_MAGIC_LEN, out);
+	if (ret < PFI_MAGIC_LEN)
+		return ret;
+
+
+	for (i = 0; i < num_keys; i++) {
+		if (!head->defined[i])
+			continue;
+
+		ret = fprintf(out, "%s=", key_desc[i].name);
+		if (ret < 0)
+			return PFI_EFILE;
+
+		if (key_desc[i].flags & PFI_STRING) {
+			ret = fprintf(out, "%s", head->value[i].str);
+			if (ret < 0)
+				return PFI_EFILE;
+		} else {
+			ret = fprintf(out, "0x%8x", head->value[i].num);
+			if (ret < 0)
+				return PFI_EFILE;
+
+		}
+		ret = fprintf(out, "\n");
+		if (ret < 0)
+			return PFI_EFILE;
+	}
+	ret = fprintf(out, "\n");
+	if (ret < 0)
+		return PFI_EFILE;
+
+	ret = fflush(out);
+	if (ret != 0)
+		return PFI_EFILE;
+
+	return 0;
+}
+
+int pfi_header_read (FILE *in, pfi_header head)
+{
+	char magic[PFI_MAGIC_LEN];
+	char mode[PFI_KEYWORD_LEN];
+	char buf[256];
+
+	if (PFI_MAGIC_LEN != fread(magic, 1, PFI_MAGIC_LEN, in))
+		return PFI_EFILE;
+	if (memcmp(magic, PFI_MAGIC, PFI_MAGIC_LEN) != 0)  {
+		if (memcmp(magic, PFI_DATA, PFI_MAGIC_LEN) == 0) {
+			return PFI_DATA_START;
+		}
+		return PFI_ENOHEADER;
+	}
+
+	while (fgets(buf, sizeof(buf), in) != NULL && buf[0] != '\n') {
+		char *value;
+		char *end;
+		value = strchr(buf, '=');
+		if (value == NULL)
+			return PFI_ENOHEADER;
+
+		*value = '\0';
+		value++;
+		end = strchr(value, '\n');
+		if (end)
+		       *end = '\0';
+
+		if (pfi_header_setvalue(head, buf, value))
+			return PFI_ENOHEADER;
+	}
+
+	if (check_valid(head) != 0)
+		return PFI_ENOHEADER;
+
+	/* set current mode no. in head */
+	pfi_header_getstring(head, "mode", mode, PFI_KEYWORD_LEN);
+	if (head->mode_no > get_mode_no(mode)) {
+		return PFI_EMODE;
+	}
+	head->mode_no = get_mode_no(mode);
+	return 0;
+}
+
+int pfi_header_dump (FILE *out, pfi_header head __attribute__((__unused__)))
+{
+	fprintf(out, "Sorry not implemented yet. Write mail to "
+		"Andreas Arnez and complain!\n");
+	return 0;
+}
+
+int pfi_read (FILE *in, pfi_read_func func, void *priv_data)
+{
+	int rc;
+	pfi_header header;
+
+	rc = pfi_header_init (&header);
+	if (0 != rc)
+		return rc;
+	if (!func)
+		return PFI_EINVAL;
+
+	while ((0 == rc) && !feof(in)) {
+		/*
+		 * Read header and check consistency of the fields.
+		 */
+		rc = pfi_header_read( in, header );
+		if (0 != rc)
+			break;
+		if (func) {
+			rc = func(in, header, priv_data);
+			if (rc != 0)
+				break;
+		}
+	}
+
+	pfi_header_destroy(&header);
+	return rc;
+}