452 	     struct printf_spec spec)  in number()  argument
458 	int need_pfx = ((spec.flags & SPECIAL) && spec.base != 10);  in number()
461 	int field_width = spec.field_width;  in number()
462 	int precision = spec.precision;  in number()
466 	locase = (spec.flags & SMALL);  in number()
467 	if (spec.flags & LEFT)  in number()
468 		spec.flags &= ~ZEROPAD;  in number()
470 	if (spec.flags & SIGN) {  in number()
475 		} else if (spec.flags & PLUS) {  in number()
478 		} else if (spec.flags & SPACE) {  in number()
484 		if (spec.base == 16)  in number()
492 	if (num < spec.base)  in number()
494 	else if (spec.base != 10) { /* 8 or 16 */  in number()
495 		int mask = spec.base - 1;  in number()
498 		if (spec.base == 16)  in number()
513 	if (!(spec.flags & (ZEROPAD | LEFT))) {  in number()
528 		if (spec.base == 16 || !is_zero) {  in number()
533 		if (spec.base == 16) {  in number()
540 	if (!(spec.flags & LEFT)) {  in number()
541 		char c = ' ' + (spec.flags & ZEROPAD);  in number()
574 	struct printf_spec spec;  in special_hex_number()  local
576 	spec.field_width = 2 + 2 * size;	/* 0x + hex */  in special_hex_number()
577 	spec.flags = SPECIAL | SMALL | ZEROPAD;  in special_hex_number()
578 	spec.base = 16;  in special_hex_number()
579 	spec.precision = -1;  in special_hex_number()
581 	return number(buf, end, num, spec);  in special_hex_number()
611 char *widen_string(char *buf, int n, char *end, struct printf_spec spec)  in widen_string()  argument
615 	if (likely(n >= spec.field_width))  in widen_string()
618 	spaces = spec.field_width - n;  in widen_string()
619 	if (!(spec.flags & LEFT)) {  in widen_string()
633 			    struct printf_spec spec)  in string_nocheck()  argument
636 	int lim = spec.precision;  in string_nocheck()
647 	return widen_string(buf, len, end, spec);  in string_nocheck()
651 		     struct printf_spec spec)  in err_ptr()  argument
657 		return string_nocheck(buf, end, sym, spec);  in err_ptr()
664 	spec.flags |= SIGN;  in err_ptr()
665 	spec.base = 10;  in err_ptr()
666 	return number(buf, end, err, spec);  in err_ptr()
671 			  struct printf_spec spec)  in error_string()  argument
678 	if (spec.precision == -1)  in error_string()
679 		spec.precision = 2 * sizeof(void *);  in error_string()
681 	return string_nocheck(buf, end, s, spec);  in error_string()
701 			 struct printf_spec spec)  in check_pointer()  argument
707 		*buf = error_string(*buf, end, err_msg, spec);  in check_pointer()
716 	     struct printf_spec spec)  in string()  argument
718 	if (check_pointer(&buf, end, s, spec))  in string()
721 	return string_nocheck(buf, end, s, spec);  in string()
726 			    struct printf_spec spec)  in pointer_string()  argument
728 	spec.base = 16;  in pointer_string()
729 	spec.flags |= SMALL;  in pointer_string()
730 	if (spec.field_width == -1) {  in pointer_string()
731 		spec.field_width = 2 * sizeof(ptr);  in pointer_string()
732 		spec.flags |= ZEROPAD;  in pointer_string()
735 	return number(buf, end, (unsigned long int)ptr, spec);  in pointer_string()
801 		       struct printf_spec spec)  in ptr_to_id()  argument
812 		return pointer_string(buf, end, ptr, spec);  in ptr_to_id()
817 		return pointer_string(buf, end, (const void *)hashval, spec);  in ptr_to_id()
822 		spec.field_width = 2 * sizeof(ptr);  in ptr_to_id()
824 		return error_string(buf, end, str, spec);  in ptr_to_id()
827 	return pointer_string(buf, end, (const void *)hashval, spec);  in ptr_to_id()
831 			     struct printf_spec spec)  in default_pointer()  argument
838 		return pointer_string(buf, end, ptr, spec);  in default_pointer()
840 	return ptr_to_id(buf, end, ptr, spec);  in default_pointer()
847 			 struct printf_spec spec)  in restricted_pointer()  argument
852 		return default_pointer(buf, end, ptr, spec);  in restricted_pointer()
861 			if (spec.field_width == -1)  in restricted_pointer()
862 				spec.field_width = 2 * sizeof(ptr);  in restricted_pointer()
863 			return error_string(buf, end, "pK-error", spec);  in restricted_pointer()
889 	return pointer_string(buf, end, ptr, spec);  in restricted_pointer()
893 char *dentry_name(char *buf, char *end, const struct dentry *d, struct printf_spec spec,  in dentry_name()  argument
911 		if (check_pointer(&buf, end, d, spec)) {  in dentry_name()
926 	for (n = 0; n != spec.precision; n++, buf++) {  in dentry_name()
938 	return widen_string(buf, n, end, spec);  in dentry_name()
943 			struct printf_spec spec, const char *fmt)  in file_dentry_name()  argument
945 	if (check_pointer(&buf, end, f, spec))  in file_dentry_name()
948 	return dentry_name(buf, end, f->f_path.dentry, spec, fmt);  in file_dentry_name()
953 		struct printf_spec spec, const char *fmt)  in bdev_name()  argument
957 	if (check_pointer(&buf, end, bdev, spec))  in bdev_name()
961 	buf = string(buf, end, hd->disk_name, spec);  in bdev_name()
968 		buf = number(buf, end, bdev_partno(bdev), spec);  in bdev_name()
976 		    struct printf_spec spec, const char *fmt)  in symbol_string()  argument
999 	return string_nocheck(buf, end, sym, spec);  in symbol_string()
1037 		struct printf_spec spec)  in hex_range()  argument
1039 	buf = number(buf, end, start_val, spec);  in hex_range()
1046 	return number(buf, end, end_val, spec);  in hex_range()
1051 		      struct printf_spec spec, const char *fmt)  in resource_string()  argument
1097 	if (check_pointer(&buf, end, res, spec))  in resource_string()
1143 	return string_nocheck(buf, end, sym, spec);  in resource_string()
1148 		   struct printf_spec spec, const char *fmt)  in range_string()  argument
1160 	if (check_pointer(&buf, end, range, spec))  in range_string()
1168 	return string_nocheck(buf, end, sym, spec);  in range_string()
1172 char *hex_string(char *buf, char *end, u8 *addr, struct printf_spec spec,  in hex_string()  argument
1179 	if (spec.field_width == 0)  in hex_string()
1183 	if (check_pointer(&buf, end, addr, spec))  in hex_string()
1201 	if (spec.field_width > 0)  in hex_string()
1202 		len = min_t(int, spec.field_width, 64);  in hex_string()
1224 		    struct printf_spec spec, const char *fmt)  in bitmap_string()  argument
1227 	int nr_bits = max_t(int, spec.field_width, 0);  in bitmap_string()
1231 	if (check_pointer(&buf, end, bitmap, spec))  in bitmap_string()
1235 	spec = (struct printf_spec){ .flags = SMALL | ZEROPAD, .base = 16 };  in bitmap_string()
1258 		spec.field_width = DIV_ROUND_UP(chunksz, 4);  in bitmap_string()
1259 		buf = number(buf, end, val, spec);  in bitmap_string()
1268 			 struct printf_spec spec, const char *fmt)  in bitmap_list_string()  argument
1270 	int nr_bits = max_t(int, spec.field_width, 0);  in bitmap_list_string()
1274 	if (check_pointer(&buf, end, bitmap, spec))  in bitmap_list_string()
1298 			 struct printf_spec spec, const char *fmt)  in mac_address_string()  argument
1306 	if (check_pointer(&buf, end, addr, spec))  in mac_address_string()
1334 	return string_nocheck(buf, end, mac_addr, spec);  in mac_address_string()
1488 		      struct printf_spec spec, const char *fmt)  in ip6_addr_string()  argument
1497 	return string_nocheck(buf, end, ip6_addr, spec);  in ip6_addr_string()
1502 		      struct printf_spec spec, const char *fmt)  in ip4_addr_string()  argument
1508 	return string_nocheck(buf, end, ip4_addr, spec);  in ip4_addr_string()
1513 			 struct printf_spec spec, const char *fmt)  in ip6_addr_string_sa()  argument
1557 		p = number(p, pend, ntohs(sa->sin6_port), spec);  in ip6_addr_string_sa()
1562 					  IPV6_FLOWINFO_MASK), spec);  in ip6_addr_string_sa()
1566 		p = number(p, pend, sa->sin6_scope_id, spec);  in ip6_addr_string_sa()
1570 	return string_nocheck(buf, end, ip6_addr, spec);  in ip6_addr_string_sa()
1575 			 struct printf_spec spec, const char *fmt)  in ip4_addr_string_sa()  argument
1601 		p = number(p, pend, ntohs(sa->sin_port), spec);  in ip4_addr_string_sa()
1605 	return string_nocheck(buf, end, ip4_addr, spec);  in ip4_addr_string_sa()
1610 		     struct printf_spec spec, const char *fmt)  in ip_addr_string()  argument
1614 	if (check_pointer(&buf, end, ptr, spec))  in ip_addr_string()
1619 		return ip6_addr_string(buf, end, ptr, spec, fmt);  in ip_addr_string()
1621 		return ip4_addr_string(buf, end, ptr, spec, fmt);  in ip_addr_string()
1631 			return ip4_addr_string_sa(buf, end, &sa->v4, spec, fmt);  in ip_addr_string()
1633 			return ip6_addr_string_sa(buf, end, &sa->v6, spec, fmt);  in ip_addr_string()
1635 			return error_string(buf, end, "(einval)", spec);  in ip_addr_string()
1640 	return error_string(buf, end, err_fmt_msg, spec);  in ip_addr_string()
1644 char *escaped_string(char *buf, char *end, u8 *addr, struct printf_spec spec,  in escaped_string()  argument
1652 	if (spec.field_width == 0)  in escaped_string()
1655 	if (check_pointer(&buf, end, addr, spec))  in escaped_string()
1690 	len = spec.field_width < 0 ? 1 : spec.field_width;  in escaped_string()
1707 		       struct printf_spec spec)  in va_format()  argument
1711 	if (check_pointer(&buf, end, va_fmt, spec))  in va_format()
1724 		  struct printf_spec spec, const char *fmt)  in uuid_string()  argument
1732 	if (check_pointer(&buf, end, addr, spec))  in uuid_string()
1764 	return string_nocheck(buf, end, uuid, spec);  in uuid_string()
1769 		  struct printf_spec spec,  const char *fmt)  in netdev_bits()  argument
1774 	if (check_pointer(&buf, end, addr, spec))  in netdev_bits()
1783 		return error_string(buf, end, "(%pN?)", spec);  in netdev_bits()
1791 		    struct printf_spec spec, const char *fmt)  in fourcc_string()  argument
1799 		return error_string(buf, end, "(%p4?)", spec);  in fourcc_string()
1801 	if (check_pointer(&buf, end, fourcc, spec))  in fourcc_string()
1824 	return string(buf, end, output, spec);  in fourcc_string()
1829 		  struct printf_spec spec, const char *fmt)  in address_val()  argument
1834 	if (check_pointer(&buf, end, addr, spec))  in address_val()
1889 	      struct printf_spec spec, const char *fmt)  in rtc_str()  argument
1896 	if (check_pointer(&buf, end, tm, spec))  in rtc_str()
1939 		 struct printf_spec spec, const char *fmt)  in time64_str()  argument
1957 	return rtc_str(buf, end, &rtc_time, spec, fmt);  in time64_str()
1961 char *time_and_date(char *buf, char *end, void *ptr, struct printf_spec spec,  in time_and_date()  argument
1966 		return rtc_str(buf, end, (const struct rtc_time *)ptr, spec, fmt);  in time_and_date()
1968 		return time64_str(buf, end, *(const time64_t *)ptr, spec, fmt);  in time_and_date()
1970 		return error_string(buf, end, "(%pt?)", spec);  in time_and_date()
1975 char *clock(char *buf, char *end, struct clk *clk, struct printf_spec spec,  in clock()  argument
1979 		return error_string(buf, end, "(%pC?)", spec);  in clock()
1981 	if (check_pointer(&buf, end, clk, spec))  in clock()
1988 		return string(buf, end, __clk_get_name(clk), spec);  in clock()
1990 		return ptr_to_id(buf, end, clk, spec);  in clock()
2026 	const struct printf_spec *spec;  member
2079 			     *pff[i].spec);  in format_page_flags()
2092 		   struct printf_spec spec, const char *fmt)  in flags_string()  argument
2097 	if (check_pointer(&buf, end, flags_ptr, spec))  in flags_string()
2112 		return error_string(buf, end, "(%pG?)", spec);  in flags_string()
2147 			 struct printf_spec spec, const char *fmt)  in device_node_string()  argument
2156 	struct printf_spec str_spec = spec;  in device_node_string()
2160 		return error_string(buf, end, "(%pO?)", spec);  in device_node_string()
2163 		return error_string(buf, end, "(%pOF?)", spec);  in device_node_string()
2165 	if (check_pointer(&buf, end, dn, spec))  in device_node_string()
2232 	return widen_string(buf, buf - buf_start, end, spec);  in device_node_string()
2237 		    struct printf_spec spec, const char *fmt)  in fwnode_string()  argument
2239 	struct printf_spec str_spec = spec;  in fwnode_string()
2245 		return error_string(buf, end, "(%pf?)", spec);  in fwnode_string()
2247 	if (check_pointer(&buf, end, fwnode, spec))  in fwnode_string()
2262 	return widen_string(buf, buf - buf_start, end, spec);  in fwnode_string()
2267 			struct printf_spec spec)  in resource_or_range()  argument
2270 		return range_string(buf, end, ptr, spec, fmt);  in resource_or_range()
2271 	return resource_string(buf, end, ptr, spec, fmt);  in resource_or_range()
2433 	      struct printf_spec spec)  in pointer()  argument
2441 		return symbol_string(buf, end, ptr, spec, fmt);  in pointer()
2444 		return resource_or_range(fmt, buf, end, ptr, spec);  in pointer()
2446 		return hex_string(buf, end, ptr, spec, fmt);  in pointer()
2450 			return bitmap_list_string(buf, end, ptr, spec, fmt);  in pointer()
2452 			return bitmap_string(buf, end, ptr, spec, fmt);  in pointer()
2458 		return mac_address_string(buf, end, ptr, spec, fmt);  in pointer()
2468 		return ip_addr_string(buf, end, ptr, spec, fmt);  in pointer()
2470 		return escaped_string(buf, end, ptr, spec, fmt);  in pointer()
2472 		return uuid_string(buf, end, ptr, spec, fmt);  in pointer()
2474 		return va_format(buf, end, ptr, spec);  in pointer()
2476 		return restricted_pointer(buf, end, ptr, spec);  in pointer()
2478 		return netdev_bits(buf, end, ptr, spec, fmt);  in pointer()
2480 		return fourcc_string(buf, end, ptr, spec, fmt);  in pointer()
2482 		return address_val(buf, end, ptr, spec, fmt);  in pointer()
2484 		return dentry_name(buf, end, ptr, spec, fmt);  in pointer()
2486 		return time_and_date(buf, end, ptr, spec, fmt);  in pointer()
2488 		return clock(buf, end, ptr, spec, fmt);  in pointer()
2490 		return file_dentry_name(buf, end, ptr, spec, fmt);  in pointer()
2493 		return bdev_name(buf, end, ptr, spec, fmt);  in pointer()
2497 		return flags_string(buf, end, ptr, spec, fmt);  in pointer()
2499 		return device_node_string(buf, end, ptr, spec, fmt + 1);  in pointer()
2501 		return fwnode_string(buf, end, ptr, spec, fmt + 1);  in pointer()
2505 			return error_string(buf, end, "(%pA?)", spec);  in pointer()
2509 		return pointer_string(buf, end, ptr, spec);  in pointer()
2513 			return default_pointer(buf, end, ptr, spec);  in pointer()
2514 		return err_ptr(buf, end, ptr, spec);  in pointer()
2519 			return string(buf, end, ptr, spec);  in pointer()
2521 			return error_string(buf, end, "(einval)", spec);  in pointer()
2524 		return default_pointer(buf, end, ptr, spec);  in pointer()
2570 struct fmt format_decode(struct fmt fmt, struct printf_spec *spec)  in format_decode()  argument
2577 		if (spec->field_width < 0) {  in format_decode()
2578 			spec->field_width = -spec->field_width;  in format_decode()
2579 			spec->flags |= LEFT;  in format_decode()
2587 		if (spec->precision < 0)  in format_decode()
2588 			spec->precision = 0;  in format_decode()
2607 	spec->flags = 0;  in format_decode()
2611 		spec->flags |= flag;  in format_decode()
2615 	spec->field_width = -1;  in format_decode()
2618 		spec->field_width = skip_atoi(&fmt.str);  in format_decode()
2628 	spec->precision = -1;  in format_decode()
2632 			spec->precision = skip_atoi(&fmt.str);  in format_decode()
2633 			if (spec->precision < 0)  in format_decode()
2634 				spec->precision = 0;  in format_decode()
2645 	spec->base = 10;  in format_decode()
2695 			spec->base = p->base;  in format_decode()
2696 		spec->flags |= p->flags_or_double_size;  in format_decode()
2708 set_field_width(struct printf_spec *spec, int width)  in set_field_width()  argument
2710 	spec->field_width = width;  in set_field_width()
2711 	if (WARN_ONCE(spec->field_width != width, "field width %d too large", width)) {  in set_field_width()
2712 		spec->field_width = clamp(width, -FIELD_WIDTH_MAX, FIELD_WIDTH_MAX);  in set_field_width()
2717 set_precision(struct printf_spec *spec, int prec)  in set_precision()  argument
2719 	spec->precision = prec;  in set_precision()
2720 	if (WARN_ONCE(spec->precision != prec, "precision %d too large", prec)) {  in set_precision()
2721 		spec->precision = clamp(prec, 0, PRECISION_MAX);  in set_precision()
2731 static unsigned long long convert_num_spec(unsigned int val, int size, struct printf_spec spec)  in convert_num_spec()  argument
2736 	if (!(spec.flags & SIGN))  in convert_num_spec()
2772 	struct printf_spec spec = {0};  in vsnprintf()  local
2795 		fmt = format_decode(fmt, &spec);  in vsnprintf()
2813 				num = convert_num_spec(va_arg(args, int), fmt.size, spec);  in vsnprintf()
2816 			str = number(str, end, num, spec);  in vsnprintf()
2821 			set_field_width(&spec, va_arg(args, int));  in vsnprintf()
2825 			set_precision(&spec, va_arg(args, int));  in vsnprintf()
2831 			if (!(spec.flags & LEFT)) {  in vsnprintf()
2832 				while (--spec.field_width > 0) {  in vsnprintf()
2843 			while (--spec.field_width > 0) {  in vsnprintf()
2852 			str = string(str, end, va_arg(args, char *), spec);  in vsnprintf()
2857 				      spec);  in vsnprintf()
3052 	struct printf_spec spec = {0};  in vbin_printf()  local
3084 		fmt = format_decode(fmt, &spec);  in vbin_printf()
3098 				set_field_width(&spec, width);  in vbin_printf()
3138 					      spec);  in vbin_printf()
3192 	struct printf_spec spec = {0};  in bstr_printf()  local
3227 		fmt = format_decode(fmt, &spec);  in bstr_printf()
3242 			set_field_width(&spec, get_arg(int));  in bstr_printf()
3246 			set_precision(&spec, get_arg(int));  in bstr_printf()
3252 			if (!(spec.flags & LEFT)) {  in bstr_printf()
3253 				while (--spec.field_width > 0) {  in bstr_printf()
3263 			while (--spec.field_width > 0) {  in bstr_printf()
3274 			str = string(str, end, (char *)str_arg, spec);  in bstr_printf()
3306 				str = pointer(fmt.str, str, end, get_arg(void *), spec);  in bstr_printf()
3326 				num = convert_num_spec(get_arg(int), fmt.size, spec);  in bstr_printf()
3328 			str = number(str, end, num, spec);  in bstr_printf()