412 	     struct printf_spec spec)  in number()  argument
418 	int need_pfx = ((spec.flags & SPECIAL) && spec.base != 10);  in number()
421 	int field_width = spec.field_width;  in number()
422 	int precision = spec.precision;  in number()
428 	locase = (spec.flags & SMALL);  in number()
429 	if (spec.flags & LEFT)  in number()
430 		spec.flags &= ~ZEROPAD;  in number()
432 	if (spec.flags & SIGN) {  in number()
437 		} else if (spec.flags & PLUS) {  in number()
440 		} else if (spec.flags & SPACE) {  in number()
446 		if (spec.base == 16)  in number()
454 	if (num < spec.base)  in number()
456 	else if (spec.base != 10) { /* 8 or 16 */  in number()
457 		int mask = spec.base - 1;  in number()
460 		if (spec.base == 16)  in number()
475 	if (!(spec.flags & (ZEROPAD | LEFT))) {  in number()
490 		if (spec.base == 16 || !is_zero) {  in number()
495 		if (spec.base == 16) {  in number()
502 	if (!(spec.flags & LEFT)) {  in number()
503 		char c = ' ' + (spec.flags & ZEROPAD);  in number()
536 	struct printf_spec spec;  in special_hex_number()  local
538 	spec.type = FORMAT_TYPE_PTR;  in special_hex_number()
539 	spec.field_width = 2 + 2 * size;	/* 0x + hex */  in special_hex_number()
540 	spec.flags = SPECIAL | SMALL | ZEROPAD;  in special_hex_number()
541 	spec.base = 16;  in special_hex_number()
542 	spec.precision = -1;  in special_hex_number()
544 	return number(buf, end, num, spec);  in special_hex_number()
574 char *widen_string(char *buf, int n, char *end, struct printf_spec spec)  in widen_string()  argument
578 	if (likely(n >= spec.field_width))  in widen_string()
581 	spaces = spec.field_width - n;  in widen_string()
582 	if (!(spec.flags & LEFT)) {  in widen_string()
595 char *string(char *buf, char *end, const char *s, struct printf_spec spec)  in string()  argument
598 	size_t lim = spec.precision;  in string()
612 	return widen_string(buf, len, end, spec);  in string()
616 char *dentry_name(char *buf, char *end, const struct dentry *d, struct printf_spec spec,  in dentry_name()  argument
644 	for (n = 0; n != spec.precision; n++, buf++) {  in dentry_name()
656 	return widen_string(buf, n, end, spec);  in dentry_name()
662 		struct printf_spec spec, const char *fmt)  in bdev_name()  argument
666 	buf = string(buf, end, hd->disk_name, spec);  in bdev_name()
673 		buf = number(buf, end, bdev->bd_part->partno, spec);  in bdev_name()
681 		    struct printf_spec spec, const char *fmt)  in symbol_string()  argument
700 	return string(buf, end, sym, spec);  in symbol_string()
724 		      struct printf_spec spec, const char *fmt)  in resource_string()  argument
817 	return string(buf, end, sym, spec);  in resource_string()
821 char *hex_string(char *buf, char *end, u8 *addr, struct printf_spec spec,  in hex_string()  argument
828 	if (spec.field_width == 0)  in hex_string()
834 		return string(buf, end, NULL, spec);  in hex_string()
851 	if (spec.field_width > 0)  in hex_string()
852 		len = min_t(int, spec.field_width, 64);  in hex_string()
874 		    struct printf_spec spec, const char *fmt)  in bitmap_string()  argument
877 	int nr_bits = max_t(int, spec.field_width, 0);  in bitmap_string()
882 	spec = (struct printf_spec){ .flags = SMALL | ZEROPAD, .base = 16 };  in bitmap_string()
905 		spec.field_width = DIV_ROUND_UP(chunksz, 4);  in bitmap_string()
906 		buf = number(buf, end, val, spec);  in bitmap_string()
915 			 struct printf_spec spec, const char *fmt)  in bitmap_list_string()  argument
917 	int nr_bits = max_t(int, spec.field_width, 0);  in bitmap_list_string()
952 			 struct printf_spec spec, const char *fmt)  in mac_address_string()  argument
985 	return string(buf, end, mac_addr, spec);  in mac_address_string()
1139 		      struct printf_spec spec, const char *fmt)  in ip6_addr_string()  argument
1148 	return string(buf, end, ip6_addr, spec);  in ip6_addr_string()
1153 		      struct printf_spec spec, const char *fmt)  in ip4_addr_string()  argument
1159 	return string(buf, end, ip4_addr, spec);  in ip4_addr_string()
1164 			 struct printf_spec spec, const char *fmt)  in ip6_addr_string_sa()  argument
1208 		p = number(p, pend, ntohs(sa->sin6_port), spec);  in ip6_addr_string_sa()
1213 					  IPV6_FLOWINFO_MASK), spec);  in ip6_addr_string_sa()
1217 		p = number(p, pend, sa->sin6_scope_id, spec);  in ip6_addr_string_sa()
1221 	return string(buf, end, ip6_addr, spec);  in ip6_addr_string_sa()
1226 			 struct printf_spec spec, const char *fmt)  in ip4_addr_string_sa()  argument
1252 		p = number(p, pend, ntohs(sa->sin_port), spec);  in ip4_addr_string_sa()
1256 	return string(buf, end, ip4_addr, spec);  in ip4_addr_string_sa()
1260 char *escaped_string(char *buf, char *end, u8 *addr, struct printf_spec spec,  in escaped_string()  argument
1268 	if (spec.field_width == 0)  in escaped_string()
1272 		return string(buf, end, NULL, spec);	/* NULL pointer */  in escaped_string()
1307 	len = spec.field_width < 0 ? 1 : spec.field_width;  in escaped_string()
1321 		  struct printf_spec spec, const char *fmt)  in uuid_string()  argument
1357 	return string(buf, end, uuid, spec);  in uuid_string()
1362 		     struct printf_spec spec)  in pointer_string()  argument
1364 	spec.base = 16;  in pointer_string()
1365 	spec.flags |= SMALL;  in pointer_string()
1366 	if (spec.field_width == -1) {  in pointer_string()
1367 		spec.field_width = 2 * sizeof(ptr);  in pointer_string()
1368 		spec.flags |= ZEROPAD;  in pointer_string()
1371 	return number(buf, end, (unsigned long int)ptr, spec);  in pointer_string()
1378 			 struct printf_spec spec)  in restricted_pointer()  argument
1392 			if (spec.field_width == -1)  in restricted_pointer()
1393 				spec.field_width = 2 * sizeof(ptr);  in restricted_pointer()
1394 			return string(buf, end, "pK-error", spec);  in restricted_pointer()
1420 	return pointer_string(buf, end, ptr, spec);  in restricted_pointer()
1465 char *clock(char *buf, char *end, struct clk *clk, struct printf_spec spec,  in clock()  argument
1469 		return string(buf, end, NULL, spec);  in clock()
1475 		return string(buf, end, __clk_get_name(clk), spec);  in clock()
1569 			 struct printf_spec spec, const char *fmt)  in device_node_string()  argument
1584 	struct printf_spec str_spec = spec;  in device_node_string()
1588 		return string(buf, end, "(!OF)", spec);  in device_node_string()
1591 		return string(buf, end, "(null)", spec);  in device_node_string()
1651 	return widen_string(buf, buf - buf_start, end, spec);  in device_node_string()
1712 static char *ptr_to_id(char *buf, char *end, void *ptr, struct printf_spec spec)  in ptr_to_id()  argument
1720 		return pointer_string(buf, end, (const void *)hashval, spec);  in ptr_to_id()
1724 		spec.field_width = 2 * sizeof(ptr);  in ptr_to_id()
1726 		return string(buf, end, str, spec);  in ptr_to_id()
1739 	return pointer_string(buf, end, (const void *)hashval, spec);  in ptr_to_id()
1857 	      struct printf_spec spec)  in pointer()  argument
1866 		if (spec.field_width == -1)  in pointer()
1867 			spec.field_width = default_width;  in pointer()
1868 		return string(buf, end, "(null)", spec);  in pointer()
1879 		return symbol_string(buf, end, ptr, spec, fmt);  in pointer()
1882 		return resource_string(buf, end, ptr, spec, fmt);  in pointer()
1884 		return hex_string(buf, end, ptr, spec, fmt);  in pointer()
1888 			return bitmap_list_string(buf, end, ptr, spec, fmt);  in pointer()
1890 			return bitmap_string(buf, end, ptr, spec, fmt);  in pointer()
1896 		return mac_address_string(buf, end, ptr, spec, fmt);  in pointer()
1908 			return ip6_addr_string(buf, end, ptr, spec, fmt);  in pointer()
1910 			return ip4_addr_string(buf, end, ptr, spec, fmt);  in pointer()
1920 				return ip4_addr_string_sa(buf, end, &sa->v4, spec, fmt);  in pointer()
1922 				return ip6_addr_string_sa(buf, end, &sa->v6, spec, fmt);  in pointer()
1924 				return string(buf, end, "(invalid address)", spec);  in pointer()
1929 		return escaped_string(buf, end, ptr, spec, fmt);  in pointer()
1931 		return uuid_string(buf, end, ptr, spec, fmt);  in pointer()
1945 		return restricted_pointer(buf, end, ptr, spec);  in pointer()
1951 		return dentry_name(buf, end, ptr, spec, fmt);  in pointer()
1953 		return clock(buf, end, ptr, spec, fmt);  in pointer()
1957 				   spec, fmt);  in pointer()
1960 		return bdev_name(buf, end, ptr, spec, fmt);  in pointer()
1968 			return device_node_string(buf, end, ptr, spec, fmt + 1);  in pointer()
1972 		return pointer_string(buf, end, ptr, spec);  in pointer()
1976 	return ptr_to_id(buf, end, ptr, spec);  in pointer()
2001 int format_decode(const char *fmt, struct printf_spec *spec)  in format_decode()  argument
2007 	if (spec->type == FORMAT_TYPE_WIDTH) {  in format_decode()
2008 		if (spec->field_width < 0) {  in format_decode()
2009 			spec->field_width = -spec->field_width;  in format_decode()
2010 			spec->flags |= LEFT;  in format_decode()
2012 		spec->type = FORMAT_TYPE_NONE;  in format_decode()
2017 	if (spec->type == FORMAT_TYPE_PRECISION) {  in format_decode()
2018 		if (spec->precision < 0)  in format_decode()
2019 			spec->precision = 0;  in format_decode()
2021 		spec->type = FORMAT_TYPE_NONE;  in format_decode()
2026 	spec->type = FORMAT_TYPE_NONE;  in format_decode()
2038 	spec->flags = 0;  in format_decode()
2046 		case '-': spec->flags |= LEFT;    break;  in format_decode()
2047 		case '+': spec->flags |= PLUS;    break;  in format_decode()
2048 		case ' ': spec->flags |= SPACE;   break;  in format_decode()
2049 		case '#': spec->flags |= SPECIAL; break;  in format_decode()
2050 		case '0': spec->flags |= ZEROPAD; break;  in format_decode()
2059 	spec->field_width = -1;  in format_decode()
2062 		spec->field_width = skip_atoi(&fmt);  in format_decode()
2065 		spec->type = FORMAT_TYPE_WIDTH;  in format_decode()
2071 	spec->precision = -1;  in format_decode()
2075 			spec->precision = skip_atoi(&fmt);  in format_decode()
2076 			if (spec->precision < 0)  in format_decode()
2077 				spec->precision = 0;  in format_decode()
2080 			spec->type = FORMAT_TYPE_PRECISION;  in format_decode()
2103 	spec->base = 10;  in format_decode()
2106 		spec->type = FORMAT_TYPE_CHAR;  in format_decode()
2110 		spec->type = FORMAT_TYPE_STR;  in format_decode()
2114 		spec->type = FORMAT_TYPE_PTR;  in format_decode()
2118 		spec->type = FORMAT_TYPE_PERCENT_CHAR;  in format_decode()
2123 		spec->base = 8;  in format_decode()
2127 		spec->flags |= SMALL;  in format_decode()
2131 		spec->base = 16;  in format_decode()
2136 		spec->flags |= SIGN;  in format_decode()
2150 		spec->type = FORMAT_TYPE_INVALID;  in format_decode()
2155 		spec->type = FORMAT_TYPE_LONG_LONG;  in format_decode()
2158 		spec->type = FORMAT_TYPE_ULONG + (spec->flags & SIGN);  in format_decode()
2160 		spec->type = FORMAT_TYPE_SIZE_T;  in format_decode()
2162 		spec->type = FORMAT_TYPE_PTRDIFF;  in format_decode()
2165 		spec->type = FORMAT_TYPE_UBYTE + (spec->flags & SIGN);  in format_decode()
2168 		spec->type = FORMAT_TYPE_USHORT + (spec->flags & SIGN);  in format_decode()
2171 		spec->type = FORMAT_TYPE_UINT + (spec->flags & SIGN);  in format_decode()
2178 set_field_width(struct printf_spec *spec, int width)  in set_field_width()  argument
2180 	spec->field_width = width;  in set_field_width()
2181 	if (WARN_ONCE(spec->field_width != width, "field width %d too large", width)) {  in set_field_width()
2182 		spec->field_width = clamp(width, -FIELD_WIDTH_MAX, FIELD_WIDTH_MAX);  in set_field_width()
2187 set_precision(struct printf_spec *spec, int prec)  in set_precision()  argument
2189 	spec->precision = prec;  in set_precision()
2190 	if (WARN_ONCE(spec->precision != prec, "precision %d too large", prec)) {  in set_precision()
2191 		spec->precision = clamp(prec, 0, PRECISION_MAX);  in set_precision()
2227 	struct printf_spec spec = {0};  in vsnprintf()  local
2245 		int read = format_decode(fmt, &spec);  in vsnprintf()
2249 		switch (spec.type) {  in vsnprintf()
2262 			set_field_width(&spec, va_arg(args, int));  in vsnprintf()
2266 			set_precision(&spec, va_arg(args, int));  in vsnprintf()
2272 			if (!(spec.flags & LEFT)) {  in vsnprintf()
2273 				while (--spec.field_width > 0) {  in vsnprintf()
2284 			while (--spec.field_width > 0) {  in vsnprintf()
2293 			str = string(str, end, va_arg(args, char *), spec);  in vsnprintf()
2298 				      spec);  in vsnprintf()
2321 			switch (spec.type) {  in vsnprintf()
2332 				if (spec.flags & SIGN)  in vsnprintf()
2359 			str = number(str, end, num, spec);  in vsnprintf()
2528 	struct printf_spec spec = {0};  in vbin_printf()  local
2560 		int read = format_decode(fmt, &spec);  in vbin_printf()
2564 		switch (spec.type) {  in vbin_printf()
2576 				set_field_width(&spec, width);  in vbin_printf()
2615 					      spec);  in vbin_printf()
2627 			switch (spec.type) {  in vbin_printf()
2686 	struct printf_spec spec = {0};  in bstr_printf()  local
2719 		int read = format_decode(fmt, &spec);  in bstr_printf()
2723 		switch (spec.type) {  in bstr_printf()
2736 			set_field_width(&spec, get_arg(int));  in bstr_printf()
2740 			set_precision(&spec, get_arg(int));  in bstr_printf()
2746 			if (!(spec.flags & LEFT)) {  in bstr_printf()
2747 				while (--spec.field_width > 0) {  in bstr_printf()
2757 			while (--spec.field_width > 0) {  in bstr_printf()
2768 			str = string(str, end, (char *)str_arg, spec);  in bstr_printf()
2801 				str = pointer(fmt, str, end, get_arg(void *), spec);  in bstr_printf()
2820 			switch (spec.type) {  in bstr_printf()
2854 			str = number(str, end, num, spec);  in bstr_printf()