alsa/0037-topology-convert-builder-to-use-the-mallocated-memor.patch

From 39fb37fef5bd3b3fa7a63e06a5f0a147197fddb9 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Sat, 14 Dec 2019 19:13:53 +0100
Subject: [PATCH 37/63] topology: convert builder to use the mallocated memory

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
 src/topology/builder.c    | 88 +++++++++++++++++++++++++++++++++++++----------
 src/topology/parser.c     | 74 ++++++++++++++++-----------------------
 src/topology/tplg_local.h |  5 +--
 3 files changed, 103 insertions(+), 64 deletions(-)

diff --git a/src/topology/builder.c b/src/topology/builder.c
index 1a22a453695a..40943b56e4aa 100644
--- a/src/topology/builder.c
+++ b/src/topology/builder.c
@@ -29,7 +29,7 @@ static void verbose(snd_tplg_t *tplg, const char *fmt, ...)
 		return;
 
 	va_start(va, fmt);
-	fprintf(stdout, "0x%6.6zx/%6.6zd - ", tplg->out_pos, tplg->out_pos);
+	fprintf(stdout, "0x%6.6zx/%6.6zd - ", tplg->bin_pos, tplg->bin_pos);
 	vfprintf(stdout, fmt, va);
 	va_end(va);
 }
@@ -37,18 +37,11 @@ static void verbose(snd_tplg_t *tplg, const char *fmt, ...)
 /* write a block, track the position */
 static ssize_t twrite(snd_tplg_t *tplg, void *data, size_t data_size)
 {
-	ssize_t r = write(tplg->out_fd, data, data_size);
-	if (r != (ssize_t)data_size) {
-		if (r < 0) {
-			SNDERR("error: unable to write: %s", strerror(errno));
-			return -errno;
-		}
-		tplg->out_pos += r;
-		SNDERR("error: unable to write (partial)");
+	if (tplg->bin_pos + data_size > tplg->bin_size)
 		return -EIO;
-	}
-	tplg->out_pos += r;
-	return r;
+	memcpy(tplg->bin + tplg->bin_pos, data, data_size);
+	tplg->bin_pos += data_size;
+	return data_size;
 }
 
 /* write out block header to output file */
@@ -71,12 +64,12 @@ static ssize_t write_block_header(snd_tplg_t *tplg, unsigned int type,
 	hdr.count = count;
 
 	/* make sure file offset is aligned with the calculated HDR offset */
-	if (tplg->out_pos != tplg->next_hdr_pos) {
+	if (tplg->bin_pos != tplg->next_hdr_pos) {
 		SNDERR("error: New header is at offset 0x%zx but file"
 			" offset 0x%zx is %s by %ld bytes\n",
-			tplg->next_hdr_pos, tplg->out_pos,
-			tplg->out_pos > tplg->next_hdr_pos ? "ahead" : "behind",
-			labs(tplg->out_pos - tplg->next_hdr_pos));
+			tplg->next_hdr_pos, tplg->bin_pos,
+			tplg->bin_pos > tplg->next_hdr_pos ? "ahead" : "behind",
+			labs(tplg->bin_pos - tplg->next_hdr_pos));
 		return -EINVAL;
 	}
 
@@ -163,6 +156,41 @@ static int write_elem_block(snd_tplg_t *tplg,
 	return 0;
 }
 
+static size_t calc_manifest_size(snd_tplg_t *tplg)
+{
+	return sizeof(struct snd_soc_tplg_hdr) +
+	       sizeof(tplg->manifest) +
+	       tplg->manifest.priv.size;
+}
+
+static size_t calc_real_size(struct list_head *base)
+{
+	struct list_head *pos;
+	struct tplg_elem *elem, *elem_next;
+	size_t size = 0;
+
+	list_for_each(pos, base) {
+
+		elem = list_entry(pos, struct tplg_elem, list);
+
+		/* compound elems have already been copied to other elems */
+		if (elem->compound_elem)
+			continue;
+
+		if (elem->size <= 0)
+			continue;
+
+		size += elem->size;
+
+		elem_next = list_entry(pos->next, struct tplg_elem, list);
+
+		if ((pos->next == base) || (elem_next->index != elem->index))
+			size += sizeof(struct snd_soc_tplg_hdr);
+	}
+
+	return size;
+}
+
 static size_t calc_block_size(struct list_head *base)
 {
 	struct list_head *pos;
@@ -277,9 +305,27 @@ int tplg_write_data(snd_tplg_t *tplg)
 	};
 
 	ssize_t ret;
-	size_t size;
+	size_t total_size, size;
 	unsigned int index;
 
+	/* calculate total size */
+	total_size = calc_manifest_size(tplg);
+	for (index = 0; index < ARRAY_SIZE(wtable); index++) {
+		wptr = &wtable[index];
+		size = calc_real_size(wptr->list);
+		total_size += size;
+	}
+
+	/* allocate new binary output */
+	free(tplg->bin);
+	tplg->bin = malloc(total_size);
+	tplg->bin_pos = 0;
+	tplg->bin_size = total_size;
+	if (tplg->bin == NULL) {
+		tplg->bin_size = 0;
+		return -ENOMEM;
+	}
+
 	/* write manifest */
 	ret = write_manifest_data(tplg);
 	if (ret < 0) {
@@ -306,7 +352,13 @@ int tplg_write_data(snd_tplg_t *tplg)
 		}
 	}
 
-	verbose(tplg, "total size is 0x%zx/%zd\n", tplg->out_pos, tplg->out_pos);
+	verbose(tplg, "total size is 0x%zx/%zd\n", tplg->bin_pos, tplg->bin_pos);
+
+	if (total_size != tplg->bin_pos) {
+		SNDERR("total size mismatch (%zd != %zd)\n",
+		       total_size, tplg->bin_pos);
+		return -EINVAL;
+	}
 
 	return 0;
 }
diff --git a/src/topology/parser.c b/src/topology/parser.c
index f56ad97e42b9..98a9f9e9deac 100644
--- a/src/topology/parser.c
+++ b/src/topology/parser.c
@@ -393,50 +393,29 @@ static int tplg_build_integ(snd_tplg_t *tplg)
 	return err;
 }
 
-int snd_tplg_build_file(snd_tplg_t *tplg, const char *infile,
-	const char *outfile)
+int snd_tplg_build_file(snd_tplg_t *tplg,
+			const char *infile,
+			const char *outfile)
 {
 	snd_config_t *cfg = NULL;
 	int err = 0;
 
-	tplg->out_fd =
-		open(outfile, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
-	if (tplg->out_fd < 0) {
-		SNDERR("error: failed to open %s err %d\n",
-			outfile, -errno);
-		return -errno;
-	}
-
 	err = tplg_load_config(infile, &cfg);
 	if (err < 0) {
 		SNDERR("error: failed to load topology file %s\n",
 			infile);
-		goto out_close;
+		return err;
 	}
 
 	err = tplg_parse_config(tplg, cfg);
 	if (err < 0) {
 		SNDERR("error: failed to parse topology\n");
-		goto out;
-	}
-
-	err = tplg_build_integ(tplg);
-	if (err < 0) {
-		SNDERR("error: failed to check topology integrity\n");
-		goto out;
-	}
-
-	err = tplg_write_data(tplg);
-	if (err < 0) {
-		SNDERR("error: failed to write data %d\n", err);
-		goto out;
+		return err;
 	}
 
-out:
 	snd_config_delete(cfg);
-out_close:
-	close(tplg->out_fd);
-	return err;
+
+	return snd_tplg_build(tplg, outfile);
 }
 
 int snd_tplg_add_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
@@ -468,31 +447,38 @@ int snd_tplg_add_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
 
 int snd_tplg_build(snd_tplg_t *tplg, const char *outfile)
 {
-	int err;
-
-	tplg->out_fd =
-		open(outfile, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
-	if (tplg->out_fd < 0) {
-		SNDERR("error: failed to open %s err %d\n",
-			outfile, -errno);
-		return -errno;
-	}
+	int fd, err;
+	ssize_t r;
 
 	err = tplg_build_integ(tplg);
 	if (err < 0) {
 		SNDERR("error: failed to check topology integrity\n");
-		goto out;
+		return err;
 	}
 
 	err = tplg_write_data(tplg);
 	if (err < 0) {
 		SNDERR("error: failed to write data %d\n", err);
-		goto out;
+		return err;
 	}
 
-out:
-	close(tplg->out_fd);
-	return err;
+	fd = open(outfile, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
+	if (fd < 0) {
+		SNDERR("error: failed to open %s err %d\n", outfile, -errno);
+		return -errno;
+	}
+	r = write(fd, tplg->bin, tplg->bin_size);
+	close(fd);
+	if (r < 0) {
+		err = -errno;
+		SNDERR("error: write error: %s\n", strerror(errno));
+		return err;
+	}
+	if ((size_t)r != tplg->bin_size) {
+		SNDERR("error: partial write (%zd != %zd)\n", r, tplg->bin_size);
+		return -EIO;
+	}
+	return 0;
 }
 
 int snd_tplg_set_manifest_data(snd_tplg_t *tplg, const void *data, int len)
@@ -571,8 +557,8 @@ snd_tplg_t *snd_tplg_new(void)
 
 void snd_tplg_free(snd_tplg_t *tplg)
 {
-	if (tplg->manifest_pdata)
-		free(tplg->manifest_pdata);
+	free(tplg->bin);
+	free(tplg->manifest_pdata);
 
 	tplg_elem_free_list(&tplg->tlv_list);
 	tplg_elem_free_list(&tplg->widget_list);
diff --git a/src/topology/tplg_local.h b/src/topology/tplg_local.h
index e16c78d49709..87e6c9a517de 100644
--- a/src/topology/tplg_local.h
+++ b/src/topology/tplg_local.h
@@ -60,8 +60,9 @@ typedef enum _snd_pcm_rates {
 
 struct snd_tplg {
 	/* out file */
-	int out_fd;
-	size_t out_pos;
+	unsigned char *bin;
+	size_t bin_pos;
+	size_t bin_size;
 
 	int verbose;
 	unsigned int version;
-- 
2.16.4