disk: part_efi: add get_partition_info_efi_by_name()

Add function to find a GPT table entry by name. Tested on little endian ARMv7 and ARMv8 configurations Signed-off-by: Steve Rae <srae@broadcom.com>

disk: part_efi: add get_partition_info_efi_by_name()
Add function to find a GPT table entry by name. Tested on little endian ARMv7 and ARMv8 configurations Signed-off-by: Steve Rae <srae@broadcom.com>
Steve Rae · Tom Rini
1 parent e04350d299
Showing 2 changed files with 31 additions and 1 deletions Side-by-side Diff
disk/part_efi.c
include/part.h
@@ -181,12 +181,31 @@
 			UUID_STR_FORMAT_GUID);
 #endif
  
-	debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s", __func__,
+	debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s\n", __func__,
 	      info->start, info->size, info->name);
  
 	/* Remember to free pte */
 	free(gpt_pte);
 	return 0;
+}
+
+int get_partition_info_efi_by_name(block_dev_desc_t *dev_desc,
+	const char *name, disk_partition_t *info)
+{
+	int ret;
+	int i;
+	for (i = 1; i < GPT_ENTRY_NUMBERS; i++) {
+		ret = get_partition_info_efi(dev_desc, i, info);
+		if (ret != 0) {
+			/* no more entries in table */
+			return -1;
+		}
+		if (strcmp(name, (const char *)info->name) == 0) {
+			/* matched */
+			return 0;
+		}
+	}
+	return -2;
 }
  
 int test_part_efi(block_dev_desc_t * dev_desc)
@@ -180,6 +180,17 @@
 #include <part_efi.h>
 /* disk/part_efi.c */
 int get_partition_info_efi (block_dev_desc_t * dev_desc, int part, disk_partition_t *info);
+/**
+ * get_partition_info_efi_by_name() - Find the specified GPT partition table entry
+ *
+ * @param dev_desc - block device descriptor
+ * @param gpt_name - the specified table entry name
+ * @param info - returns the disk partition info
+ *
+ * @return - '0' on match, '-1' on no match, otherwise error
+ */
+int get_partition_info_efi_by_name(block_dev_desc_t *dev_desc,
+	const char *name, disk_partition_t *info);
 void print_part_efi (block_dev_desc_t *dev_desc);
 int   test_part_efi (block_dev_desc_t *dev_desc);
...	...	@@ -181,12 +181,31 @@
181	181	UUID_STR_FORMAT_GUID);
182	182	#endif
183	183
184		- debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s", __func__,
	184	+ debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s\n", __func__,
185	185	info->start, info->size, info->name);
186	186
187	187	/* Remember to free pte */
188	188	free(gpt_pte);
189	189	return 0;
	190	+}
	191	+
	192	+int get_partition_info_efi_by_name(block_dev_desc_t *dev_desc,
	193	+ const char name, disk_partition_t info)
	194	+{
	195	+ int ret;
	196	+ int i;
	197	+ for (i = 1; i < GPT_ENTRY_NUMBERS; i++) {
	198	+ ret = get_partition_info_efi(dev_desc, i, info);
	199	+ if (ret != 0) {
	200	+ /* no more entries in table */
	201	+ return -1;
	202	+ }
	203	+ if (strcmp(name, (const char *)info->name) == 0) {
	204	+ /* matched */
	205	+ return 0;
	206	+ }
	207	+ }
	208	+ return -2;
190	209	}
191	210
192	211	int test_part_efi(block_dev_desc_t * dev_desc)
...	...	@@ -180,6 +180,17 @@
180	180	#include <part_efi.h>
181	181	/* disk/part_efi.c */
182	182	int get_partition_info_efi (block_dev_desc_t * dev_desc, int part, disk_partition_t *info);
	183	+/**
	184	+ * get_partition_info_efi_by_name() - Find the specified GPT partition table entry
	185	+ *
	186	+ * @param dev_desc - block device descriptor
	187	+ * @param gpt_name - the specified table entry name
	188	+ * @param info - returns the disk partition info
	189	+ *
	190	+ * @return - '0' on match, '-1' on no match, otherwise error
	191	+ */
	192	+int get_partition_info_efi_by_name(block_dev_desc_t *dev_desc,
	193	+ const char name, disk_partition_t info);
183	194	void print_part_efi (block_dev_desc_t *dev_desc);
184	195	int test_part_efi (block_dev_desc_t *dev_desc);
185	196