fs_mgr: Add support for A/B partitions (ebff8b97) · Commits · e / os / android_system_core

fs_mgr/fs_mgr_fstab.c

+19 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,8 @@
		#include <sys/mount.h>
		#include <unistd.h>

		#include <cutils/properties.h>

		#include "fs_mgr_priv.h"

		struct fs_mgr_flag_values {
		@@ -330,6 +332,23 @@ struct fstab fs_mgr_read_fstab(const char fstab_path)
		fstab->recs[cnt].partnum = flag_vals.partnum;
		fstab->recs[cnt].swap_prio = flag_vals.swap_prio;
		fstab->recs[cnt].zram_size = flag_vals.zram_size;

		/* If an A/B partition, modify block device to be the real block device */
		if (fstab->recs[cnt].fs_mgr_flags & MF_SLOTSELECT) {
		char propbuf[PROPERTY_VALUE_MAX];
		char *tmp;

		/* use the kernel parameter if set */
		property_get("ro.boot.slot_suffix", propbuf, "");

		if (asprintf(&tmp, "%s%s", fstab->recs[cnt].blk_device, propbuf) > 0) {
		free(fstab->recs[cnt].blk_device);
		fstab->recs[cnt].blk_device = tmp;
		} else {
		ERROR("Error updating block device name\n");
		goto err;
		}
		}
		cnt++;
		}
		/* If an A/B partition, modify block device to be the real block device */