Commit 2710c957 authored by Al Viro's avatar Al Viro
Browse files

fs_parse: get rid of ->enums 



Don't do a single array; attach them to fsparam_enum() entry
instead.  And don't bother trying to embed the names into those -
it actually loses memory, with no real speedup worth mentioning.

Simplifies validation as well.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 0f89589a

fs/afs/super.c

+9 −10
Original line number Diff line number Diff line
@@ -73,26 +73,25 @@ enum afs_param { 
	Opt_source,

};



static const struct fs_parameter_enum afs_param_flock[] = {

	{"local",	afs_flock_mode_local },

	{"openafs",	afs_flock_mode_openafs },

	{"strict",	afs_flock_mode_strict },

	{"write",	afs_flock_mode_write },

	{}

};



static const struct fs_parameter_spec afs_param_specs[] = {

	fsparam_flag  ("autocell",	Opt_autocell),

	fsparam_flag  ("dyn",		Opt_dyn),

	fsparam_enum  ("flock",		Opt_flock),

	fsparam_enum  ("flock",		Opt_flock, afs_param_flock),

	fsparam_string("source",	Opt_source),

	{}

};



static const struct fs_parameter_enum afs_param_enums[] = {

	{ Opt_flock,	"local",	afs_flock_mode_local },

	{ Opt_flock,	"openafs",	afs_flock_mode_openafs },

	{ Opt_flock,	"strict",	afs_flock_mode_strict },

	{ Opt_flock,	"write",	afs_flock_mode_write },

	{}

};



static const struct fs_parameter_description afs_fs_parameters = {

	.name		= "kAFS",

	.specs		= afs_param_specs,

	.enums		= afs_param_enums,

};



/*

fs/ceph/super.c

+5 −6
Original line number Diff line number Diff line
@@ -163,9 +163,9 @@ enum ceph_recover_session_mode { 
	ceph_recover_session_clean

};



static const struct fs_parameter_enum ceph_mount_param_enums[] = {

	{ Opt_recover_session,	"no",		ceph_recover_session_no },

	{ Opt_recover_session,	"clean",	ceph_recover_session_clean },

static const struct fs_parameter_enum ceph_param_recover[] = {

	{ "no",		ceph_recover_session_no },

	{ "clean",	ceph_recover_session_clean },

	{}

};
@@ -180,7 +180,7 @@ static const struct fs_parameter_spec ceph_mount_param_specs[] = { 
	fsparam_flag_no ("dcache",			Opt_dcache),

	fsparam_flag_no ("dirstat",			Opt_dirstat),

	__fsparam	(fs_param_is_string, "fsc",	Opt_fscache,

			 fs_param_neg_with_no | fs_param_v_optional),

			 fs_param_neg_with_no | fs_param_v_optional, NULL),

	fsparam_flag_no ("ino32",			Opt_ino32),

	fsparam_string	("mds_namespace",		Opt_mds_namespace),

	fsparam_flag_no ("poolperm",			Opt_poolperm),
@@ -189,7 +189,7 @@ static const struct fs_parameter_spec ceph_mount_param_specs[] = { 
	fsparam_flag_no ("rbytes",			Opt_rbytes),

	fsparam_u32	("readdir_max_bytes",		Opt_readdir_max_bytes),

	fsparam_u32	("readdir_max_entries",		Opt_readdir_max_entries),

	fsparam_enum	("recover_session",		Opt_recover_session),

	fsparam_enum	("recover_session",		Opt_recover_session, ceph_param_recover),

	fsparam_flag_no ("require_active_mds",		Opt_require_active_mds),

	fsparam_u32	("rsize",			Opt_rsize),

	fsparam_string	("snapdirname",			Opt_snapdirname),
@@ -201,7 +201,6 @@ static const struct fs_parameter_spec ceph_mount_param_specs[] = { 
static const struct fs_parameter_description ceph_mount_parameters = {

	.name           = "ceph",

	.specs          = ceph_mount_param_specs,

	.enums		= ceph_mount_param_enums,

};



struct ceph_parse_opts_ctx {

fs/fs_parser.c

+9 −63
Original line number Diff line number Diff line
@@ -189,9 +189,8 @@ int fs_parse(struct fs_context *fc, 
		goto maybe_okay;



	case fs_param_is_enum:

		for (e = desc->enums; e->name[0]; e++) {

			if (e->opt == p->opt &&

			    strcmp(e->name, param->string) == 0) {

		for (e = p->data; e->name; e++) {

			if (strcmp(e->name, param->string) == 0) {

				result->uint_32 = e->value;

				goto okay;

			}
@@ -359,10 +358,8 @@ bool validate_constant_table(const struct constant_table *tbl, size_t tbl_size, 
bool fs_validate_description(const struct fs_parameter_description *desc)

{

	const struct fs_parameter_spec *param, *p2;

	const struct fs_parameter_enum *e;

	const char *name = desc->name;

	unsigned int nr_params = 0;

	bool good = true, enums = false;

	bool good = true;



	pr_notice("*** VALIDATE %s ***\n", name);
@@ -383,7 +380,12 @@ bool fs_validate_description(const struct fs_parameter_description *desc) 
				       name, param->name, t);

				good = false;

			} else if (t == fs_param_is_enum) {

				enums = true;

				const struct fs_parameter_enum *e = param->data;

				if (!e || !e->name) {

					pr_err("VALIDATE %s: PARAM[%s] enum with no values\n",

					       name, param->name);

					good = false;

				}

			}



			/* Check for duplicate parameter names */
@@ -395,63 +397,7 @@ bool fs_validate_description(const struct fs_parameter_description *desc) 
				}

			}

		}



		nr_params = param - desc->specs;

	}



	if (desc->enums) {

		if (!nr_params) {

			pr_err("VALIDATE %s: Enum table but no parameters\n",

			       name);

			good = false;

			goto no_enums;

		}

		if (!enums) {

			pr_err("VALIDATE %s: Enum table but no enum-type values\n",

			       name);

			good = false;

			goto no_enums;

		}



		for (e = desc->enums; e->name[0]; e++) {

			/* Check that all entries in the enum table have at

			 * least one parameter that uses them.

			 */

			for (param = desc->specs; param->name; param++) {

				if (param->opt == e->opt &&

				    param->type != fs_param_is_enum) {

					pr_err("VALIDATE %s: e[%tu] enum val for %s\n",

					       name, e - desc->enums, param->name);

					good = false;

				}

			}

		}



		/* Check that all enum-type parameters have at least one enum

		 * value in the enum table.

		 */

		for (param = desc->specs; param->name; param++) {

			if (param->type != fs_param_is_enum)

				continue;

			for (e = desc->enums; e->name[0]; e++)

				if (e->opt == param->opt)

					break;

			if (!e->name[0]) {

				pr_err("VALIDATE %s: PARAM[%s] enum with no values\n",

				       name, param->name);

				good = false;

			}

		}

	} else {

		if (enums) {

			pr_err("VALIDATE %s: enum-type values, but no enum table\n",

			       name);

			good = false;

			goto no_enums;

		}

	}



no_enums:

	return good;

}

#endif /* CONFIG_VALIDATE_FS_PARSER */

fs/gfs2/ops_fstype.c

+23 −15
Original line number Diff line number Diff line
@@ -1271,6 +1271,13 @@ enum opt_quota { 
	Opt_quota_on,

};



static const struct fs_parameter_enum gfs2_param_quota[] = {

	{"off",        Opt_quota_off },

	{"account",    Opt_quota_account },

	{"on",         Opt_quota_on },

	{}

};



static const unsigned int opt_quota_values[] = {

	[Opt_quota_off]     = GFS2_QUOTA_OFF,

	[Opt_quota_account] = GFS2_QUOTA_ACCOUNT,
@@ -1282,11 +1289,23 @@ enum opt_data { 
	Opt_data_ordered   = GFS2_DATA_ORDERED,

};



static const struct fs_parameter_enum gfs2_param_data[] = {

	{"writeback",  Opt_data_writeback },

	{"ordered",    Opt_data_ordered },

	{}

};



enum opt_errors {

	Opt_errors_withdraw = GFS2_ERRORS_WITHDRAW,

	Opt_errors_panic    = GFS2_ERRORS_PANIC,

};



static const struct fs_parameter_enum gfs2_param_errors[] = {

	{"withdraw",   Opt_errors_withdraw },

	{"panic",      Opt_errors_panic },

	{}

};



static const struct fs_parameter_spec gfs2_param_specs[] = {

	fsparam_string ("lockproto",          Opt_lockproto),

	fsparam_string ("locktable",          Opt_locktable),
@@ -1300,11 +1319,11 @@ static const struct fs_parameter_spec gfs2_param_specs[] = { 
	fsparam_flag   ("upgrade",            Opt_upgrade),

	fsparam_flag_no("acl",                Opt_acl),

	fsparam_flag_no("suiddir",            Opt_suiddir),

	fsparam_enum   ("data",               Opt_data),

	fsparam_enum   ("data",               Opt_data, gfs2_param_data),

	fsparam_flag   ("meta",               Opt_meta),

	fsparam_flag_no("discard",            Opt_discard),

	fsparam_s32    ("commit",             Opt_commit),

	fsparam_enum   ("errors",             Opt_errors),

	fsparam_enum   ("errors",             Opt_errors, gfs2_param_errors),

	fsparam_s32    ("statfs_quantum",     Opt_statfs_quantum),

	fsparam_s32    ("statfs_percent",     Opt_statfs_percent),

	fsparam_s32    ("quota_quantum",      Opt_quota_quantum),
@@ -1312,25 +1331,14 @@ static const struct fs_parameter_spec gfs2_param_specs[] = { 
	fsparam_flag_no("rgrplvb",            Opt_rgrplvb),

	fsparam_flag_no("loccookie",          Opt_loccookie),

	/* quota can be a flag or an enum so it gets special treatment */

	__fsparam(fs_param_is_enum, "quota", Opt_quota, fs_param_neg_with_no|fs_param_v_optional),

	{}

};



static const struct fs_parameter_enum gfs2_param_enums[] = {

	{ Opt_quota,    "off",        Opt_quota_off },

	{ Opt_quota,    "account",    Opt_quota_account },

	{ Opt_quota,    "on",         Opt_quota_on },

	{ Opt_data,     "writeback",  Opt_data_writeback },

	{ Opt_data,     "ordered",    Opt_data_ordered },

	{ Opt_errors,   "withdraw",   Opt_errors_withdraw },

	{ Opt_errors,   "panic",      Opt_errors_panic },

	__fsparam(fs_param_is_enum, "quota", Opt_quota,

		fs_param_neg_with_no|fs_param_v_optional, gfs2_param_quota),

	{}

};



static const struct fs_parameter_description gfs2_fs_parameters = {

	.name = "gfs2",

	.specs = gfs2_param_specs,

	.enums = gfs2_param_enums,

};



/* Parse a single mount parameter */

fs/jffs2/super.c

+10 −11
Original line number Diff line number Diff line
@@ -167,27 +167,26 @@ enum { 
	Opt_rp_size,

};



static const struct fs_parameter_spec jffs2_param_specs[] = {

	fsparam_enum	("compr",	Opt_override_compr),

	fsparam_u32	("rp_size",	Opt_rp_size),

	{}

};



static const struct fs_parameter_enum jffs2_param_enums[] = {

	{ Opt_override_compr,	"none",	JFFS2_COMPR_MODE_NONE },

static const struct fs_parameter_enum jffs2_param_compr[] = {

	{"none",	JFFS2_COMPR_MODE_NONE },

#ifdef CONFIG_JFFS2_LZO

	{ Opt_override_compr,	"lzo",	JFFS2_COMPR_MODE_FORCELZO },

	{"lzo",		JFFS2_COMPR_MODE_FORCELZO },

#endif

#ifdef CONFIG_JFFS2_ZLIB

	{ Opt_override_compr,	"zlib",	JFFS2_COMPR_MODE_FORCEZLIB },

	{"zlib",	JFFS2_COMPR_MODE_FORCEZLIB },

#endif

	{}

};



static const struct fs_parameter_spec jffs2_param_specs[] = {

	fsparam_enum	("compr",	Opt_override_compr, jffs2_param_compr),

	fsparam_u32	("rp_size",	Opt_rp_size),

	{}

};



const struct fs_parameter_description jffs2_fs_parameters = {

	.name		= "jffs2",

	.specs		= jffs2_param_specs,

	.enums		= jffs2_param_enums,

};



static int jffs2_parse_param(struct fs_context *fc, struct fs_parameter *param)

CRA Git | Maintained and supported by SUSTech CRA and CCSE