From b3f288ed9fbb1b12c67fd00860f286a800427125 Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Sat, 23 Jan 2021 00:57:18 -0500
Subject: [PATCH] Fix clang warnings

Clang gets unhappy when passing an unsigned char to string functions.
For better or for worse we use __u8[] in the definition of the
superblock.  So cast them these to "char *" to prevent clang
build-time warnings.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---
 e2fsck/unix.c    | 2 +-
 lib/ext2fs/mmp.c | 8 ++++----
 misc/e2fuzz.c    | 3 ++-
 misc/mke2fs.c    | 4 ++--
 4 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/e2fsck/unix.c b/e2fsck/unix.c
index 1b7ccea..df3f4d7 100644
--- a/e2fsck/unix.c
+++ b/e2fsck/unix.c
@@ -1693,7 +1693,7 @@ failure:
 	 * or informational messages to the user.
 	 */
 	if (ctx->device_name == 0 && sb->s_volume_name[0])
-		ctx->device_name = string_copy(ctx, sb->s_volume_name,
+		ctx->device_name = string_copy(ctx, (char *) sb->s_volume_name,
 					       sizeof(sb->s_volume_name));
 
 	if (ctx->device_name == 0)
diff --git a/lib/ext2fs/mmp.c b/lib/ext2fs/mmp.c
index 223b617..c21ae27 100644
--- a/lib/ext2fs/mmp.c
+++ b/lib/ext2fs/mmp.c
@@ -212,11 +212,11 @@ static errcode_t ext2fs_mmp_reset(ext2_filsys fs)
 	mmp_s->mmp_seq = EXT4_MMP_SEQ_CLEAN;
 	mmp_s->mmp_time = 0;
 #ifdef HAVE_GETHOSTNAME
-	gethostname(mmp_s->mmp_nodename, sizeof(mmp_s->mmp_nodename));
+	gethostname((char *) mmp_s->mmp_nodename, sizeof(mmp_s->mmp_nodename));
 #else
 	mmp_s->mmp_nodename[0] = '\0';
 #endif
-	strncpy(mmp_s->mmp_bdevname, fs->device_name,
+	strncpy((char *) mmp_s->mmp_bdevname, fs->device_name,
 		sizeof(mmp_s->mmp_bdevname));
 
 	mmp_s->mmp_check_interval = fs->super->s_mmp_update_interval;
@@ -354,11 +354,11 @@ clean_seq:
 
 	mmp_s->mmp_seq = seq = ext2fs_mmp_new_seq();
 #ifdef HAVE_GETHOSTNAME
-	gethostname(mmp_s->mmp_nodename, sizeof(mmp_s->mmp_nodename));
+	gethostname((char *) mmp_s->mmp_nodename, sizeof(mmp_s->mmp_nodename));
 #else
 	strcpy(mmp_s->mmp_nodename, "unknown host");
 #endif
-	strncpy(mmp_s->mmp_bdevname, fs->device_name,
+	strncpy((char *) mmp_s->mmp_bdevname, fs->device_name,
 		sizeof(mmp_s->mmp_bdevname));
 
 	retval = ext2fs_mmp_write(fs, fs->super->s_mmp_block, fs->mmp_buf);
diff --git a/misc/e2fuzz.c b/misc/e2fuzz.c
index 685cdbe..8694aa8 100644
--- a/misc/e2fuzz.c
+++ b/misc/e2fuzz.c
@@ -173,7 +173,8 @@ static uint64_t rand_num(uint64_t min, uint64_t max)
 	for (i = 0; i < sizeof(x); i++)
 		px[i] = random();
 
-	return min + (uint64_t)((double)(max - min) * (x / (UINT64_MAX + 1.0)));
+	return min + (uint64_t)((double)(max - min) *
+				(x / ((double) UINT64_MAX + 1.0)));
 }
 
 static int process_fs(const char *fsname)
diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 0dffec3..edab068 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -3174,7 +3174,7 @@ int main (int argc, char *argv[])
 	if (volume_label) {
 		memset(fs->super->s_volume_name, 0,
 		       sizeof(fs->super->s_volume_name));
-		strncpy(fs->super->s_volume_name, volume_label,
+		strncpy((char *) fs->super->s_volume_name, volume_label,
 			sizeof(fs->super->s_volume_name));
 	}
 
@@ -3184,7 +3184,7 @@ int main (int argc, char *argv[])
 	if (mount_dir) {
 		memset(fs->super->s_last_mounted, 0,
 		       sizeof(fs->super->s_last_mounted));
-		strncpy(fs->super->s_last_mounted, mount_dir,
+		strncpy((char *) fs->super->s_last_mounted, mount_dir,
 			sizeof(fs->super->s_last_mounted));
 	}
 
-- 
1.8.3.1