Autosign: run blkid as user

mmgen/autosign.py

@@ -328,6 +328,7 @@ class Autosign:
 	linux_mount_subdir = 'mmgen_autosign'
 	macOS_ramdisk_name = 'AutosignRamDisk'
 	wallet_subdir = 'autosign'
+	linux_blkid_cmd = '/sbin/blkid -s LABEL -o value'
 
 	cmds = ('setup', 'xmr_setup', 'sign', 'wait')
 
@@ -758,7 +759,7 @@ class Autosign:
 		if self.cfg.no_insert_check:
 			return True
 		if sys.platform == 'linux':
-			cp = run('sudo blkid -s LABEL -o value'.split(), stdout=PIPE, text=True)
+			cp = run(self.linux_blkid_cmd.split(), stdout=PIPE, text=True)
 			if cp.returncode not in (0, 2):
 				die(2, f'blkid exited with error code {cp.returncode}')
 			return self.dev_label in cp.stdout.splitlines()

test/overlay/fakemods/mmgen/autosign.py

@@ -14,6 +14,7 @@ class overlay_fake_Autosign:
 				self.dev_label = 'MMGEN_TS_ONLINE' if self.cfg.online else 'MMGEN_TS_OFFLINE'
 				self.mount_cmd  = f'sudo mount LABEL={self.dev_label} {self.mountpoint}'
 				self.umount_cmd = f'sudo umount {self.mountpoint}'
+				self.linux_blkid_cmd = 'sudo blkid -s LABEL -o value'
 
 Autosign.dev_label          = 'MMGEN_TS_TX' # autosign_live only (Linux)
 Autosign.linux_mount_subdir = 'mmgen_ts_autosign'