Do not set -Wpadded except for checking kmod-shared headers

Remove now-unneeded manual padding in arg structs.

Signed-off-by: Andy Grover <agrover@versity.com>

utils/Makefile

@@ -19,7 +19,6 @@ endif
 SCOUTFS_FORMAT_HASH := $(shell cat $(HASH_FILES) | md5sum | cut -b1-16)
 
 CFLAGS := -Wall -O2 -Werror -D_FILE_OFFSET_BITS=64 -g -msse4.2 \
-	-Wpadded \
 	-fno-strict-aliasing \
 	-DSCOUTFS_FORMAT_HASH=0x$(SCOUTFS_FORMAT_HASH)LLU
 

utils/src/cmd.c

@@ -13,7 +13,6 @@ static struct argp_command {
 	char *name;
 	struct argp *argp;
 	int group;
-	char __pad[4];
 	int (*func)(int argc, char **argv);
 } argp_cmds[100], *next_argp_cmd = argp_cmds;
 

utils/src/counters.c

@@ -43,7 +43,6 @@ static int cmp_counter_names(const void *A, const void *B)
 struct counters_args {
 	char *sysfs_path;
 	bool tabular;
-	char __pad[7];
 };
 
 static int do_counters(struct counters_args *args)

utils/src/df.c

@@ -26,7 +26,6 @@
 struct df_args {
 	char *path;
 	bool human_readable;
-	u8 __pad[7];
 };
 
 static int do_df(struct df_args *args)

utils/src/main.c

@@ -9,6 +9,15 @@
 #include "cmd.h"
 #include "util.h"
 
+/*
+ * Ensure no compiler-added padding sneaks into structs defined in these
+ * headers.
+ */
+#pragma GCC diagnostic error "-Wpadded"
+#include "format.h"
+#include "ioctl.h"
+#pragma GCC diagnostic pop
+
 int main(int argc, char **argv)
 {
 	/*

utils/src/mkfs.c

@@ -107,7 +107,6 @@ struct mkfs_args {
 	unsigned long long max_meta_size;
 	unsigned long long max_data_size;
 	bool force;
-	char __pad[7];
 };
 
 /*

utils/src/print.c

@@ -658,7 +658,6 @@ out:
 struct print_recursion_args {
 	struct scoutfs_super_block *super;
 	int fd;
-	u8 __pad[4];
 };
 
 /* same as fs item but with a small header in the value */

utils/src/setattr.c

@@ -24,7 +24,6 @@ struct setattr_args {
 	u64 data_version;
 	u64 i_size;
 	bool offline;
-	char __pad[7];
 };
 
 static int do_setattr(struct setattr_args *args)

utils/src/stat.c

@@ -107,7 +107,6 @@ struct stat_args {
 	char *path;
 	char *single_field;
 	bool is_inode;
-	u8 __pad[7];
 };
 
 static int do_stat(struct stat_args *args)