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-rw-r--r--lib/vsprintf.c119
1 files changed, 80 insertions, 39 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 3b8aeec4e32..0d461c7c14d 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -381,8 +381,8 @@ static noinline char *put_dec(char *buf, unsigned long long num)
#define PLUS 4 /* show plus */
#define SPACE 8 /* space if plus */
#define LEFT 16 /* left justified */
-#define SMALL 32 /* Must be 32 == 0x20 */
-#define SPECIAL 64 /* 0x */
+#define SMALL 32 /* use lowercase in hex (must be 32 == 0x20) */
+#define SPECIAL 64 /* prefix hex with "0x", octal with "0" */
enum format_type {
FORMAT_TYPE_NONE, /* Just a string part */
@@ -408,12 +408,12 @@ enum format_type {
};
struct printf_spec {
- enum format_type type;
- int flags; /* flags to number() */
- int field_width; /* width of output field */
- int base;
- int precision; /* # of digits/chars */
- int qualifier;
+ u16 type;
+ s16 field_width; /* width of output field */
+ u8 flags; /* flags to number() */
+ u8 base;
+ s8 precision; /* # of digits/chars */
+ u8 qualifier;
};
static char *number(char *buf, char *end, unsigned long long num,
@@ -597,22 +597,29 @@ static char *resource_string(char *buf, char *end, struct resource *res,
#ifndef MEM_RSRC_PRINTK_SIZE
#define MEM_RSRC_PRINTK_SIZE 10
#endif
- struct printf_spec hex_spec = {
+ static const struct printf_spec io_spec = {
.base = 16,
+ .field_width = IO_RSRC_PRINTK_SIZE,
.precision = -1,
.flags = SPECIAL | SMALL | ZEROPAD,
};
- struct printf_spec dec_spec = {
+ static const struct printf_spec mem_spec = {
+ .base = 16,
+ .field_width = MEM_RSRC_PRINTK_SIZE,
+ .precision = -1,
+ .flags = SPECIAL | SMALL | ZEROPAD,
+ };
+ static const struct printf_spec dec_spec = {
.base = 10,
.precision = -1,
.flags = 0,
};
- struct printf_spec str_spec = {
+ static const struct printf_spec str_spec = {
.field_width = -1,
.precision = 10,
.flags = LEFT,
};
- struct printf_spec flag_spec = {
+ static const struct printf_spec flag_spec = {
.base = 16,
.precision = -1,
.flags = SPECIAL | SMALL,
@@ -628,35 +635,31 @@ static char *resource_string(char *buf, char *end, struct resource *res,
2*RSRC_BUF_SIZE + FLAG_BUF_SIZE + RAW_BUF_SIZE)];
char *p = sym, *pend = sym + sizeof(sym);
- int size = -1, addr = 0;
int decode = (fmt[0] == 'R') ? 1 : 0;
-
- if (res->flags & IORESOURCE_IO) {
- size = IO_RSRC_PRINTK_SIZE;
- addr = 1;
- } else if (res->flags & IORESOURCE_MEM) {
- size = MEM_RSRC_PRINTK_SIZE;
- addr = 1;
- }
+ const struct printf_spec *specp;
*p++ = '[';
- if (res->flags & IORESOURCE_IO)
+ if (res->flags & IORESOURCE_IO) {
p = string(p, pend, "io ", str_spec);
- else if (res->flags & IORESOURCE_MEM)
+ specp = &io_spec;
+ } else if (res->flags & IORESOURCE_MEM) {
p = string(p, pend, "mem ", str_spec);
- else if (res->flags & IORESOURCE_IRQ)
+ specp = &mem_spec;
+ } else if (res->flags & IORESOURCE_IRQ) {
p = string(p, pend, "irq ", str_spec);
- else if (res->flags & IORESOURCE_DMA)
+ specp = &dec_spec;
+ } else if (res->flags & IORESOURCE_DMA) {
p = string(p, pend, "dma ", str_spec);
- else {
+ specp = &dec_spec;
+ } else {
p = string(p, pend, "??? ", str_spec);
+ specp = &mem_spec;
decode = 0;
}
- hex_spec.field_width = size;
- p = number(p, pend, res->start, addr ? hex_spec : dec_spec);
+ p = number(p, pend, res->start, *specp);
if (res->start != res->end) {
*p++ = '-';
- p = number(p, pend, res->end, addr ? hex_spec : dec_spec);
+ p = number(p, pend, res->end, *specp);
}
if (decode) {
if (res->flags & IORESOURCE_MEM_64)
@@ -681,24 +684,55 @@ static char *mac_address_string(char *buf, char *end, u8 *addr,
char mac_addr[sizeof("xx:xx:xx:xx:xx:xx")];
char *p = mac_addr;
int i;
+ char separator;
+
+ if (fmt[1] == 'F') { /* FDDI canonical format */
+ separator = '-';
+ } else {
+ separator = ':';
+ }
for (i = 0; i < 6; i++) {
p = pack_hex_byte(p, addr[i]);
if (fmt[0] == 'M' && i != 5)
- *p++ = ':';
+ *p++ = separator;
}
*p = '\0';
return string(buf, end, mac_addr, spec);
}
-static char *ip4_string(char *p, const u8 *addr, bool leading_zeros)
+static char *ip4_string(char *p, const u8 *addr, const char *fmt)
{
int i;
-
+ bool leading_zeros = (fmt[0] == 'i');
+ int index;
+ int step;
+
+ switch (fmt[2]) {
+ case 'h':
+#ifdef __BIG_ENDIAN
+ index = 0;
+ step = 1;
+#else
+ index = 3;
+ step = -1;
+#endif
+ break;
+ case 'l':
+ index = 3;
+ step = -1;
+ break;
+ case 'n':
+ case 'b':
+ default:
+ index = 0;
+ step = 1;
+ break;
+ }
for (i = 0; i < 4; i++) {
char temp[3]; /* hold each IP quad in reverse order */
- int digits = put_dec_trunc(temp, addr[i]) - temp;
+ int digits = put_dec_trunc(temp, addr[index]) - temp;
if (leading_zeros) {
if (digits < 3)
*p++ = '0';
@@ -710,6 +744,7 @@ static char *ip4_string(char *p, const u8 *addr, bool leading_zeros)
*p++ = temp[digits];
if (i < 3)
*p++ = '.';
+ index += step;
}
*p = '\0';
@@ -789,7 +824,7 @@ static char *ip6_compressed_string(char *p, const char *addr)
if (useIPv4) {
if (needcolon)
*p++ = ':';
- p = ip4_string(p, &in6.s6_addr[12], false);
+ p = ip4_string(p, &in6.s6_addr[12], "I4");
}
*p = '\0';
@@ -829,7 +864,7 @@ static char *ip4_addr_string(char *buf, char *end, const u8 *addr,
{
char ip4_addr[sizeof("255.255.255.255")];
- ip4_string(ip4_addr, addr, fmt[0] == 'i');
+ ip4_string(ip4_addr, addr, fmt);
return string(buf, end, ip4_addr, spec);
}
@@ -896,12 +931,15 @@ static char *uuid_string(char *buf, char *end, const u8 *addr,
* - 'M' For a 6-byte MAC address, it prints the address in the
* usual colon-separated hex notation
* - 'm' For a 6-byte MAC address, it prints the hex address without colons
+ * - 'MF' For a 6-byte MAC FDDI address, it prints the address
+ * with a dash-separated hex notation
* - 'I' [46] for IPv4/IPv6 addresses printed in the usual way
* IPv4 uses dot-separated decimal without leading 0's (1.2.3.4)
* IPv6 uses colon separated network-order 16 bit hex with leading 0's
* - 'i' [46] for 'raw' IPv4/IPv6 addresses
* IPv6 omits the colons (01020304...0f)
* IPv4 uses dot-separated decimal with leading 0's (010.123.045.006)
+ * - '[Ii]4[hnbl]' IPv4 addresses in host, network, big or little endian order
* - 'I6c' for IPv6 addresses printed as specified by
* http://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-00
* - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form
@@ -939,6 +977,7 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
return resource_string(buf, end, ptr, spec, fmt);
case 'M': /* Colon separated: 00:01:02:03:04:05 */
case 'm': /* Contiguous: 000102030405 */
+ /* [mM]F (FDDI, bit reversed) */
return mac_address_string(buf, end, ptr, spec, fmt);
case 'I': /* Formatted IP supported
* 4: 1.2.3.4
@@ -1297,7 +1336,7 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
break;
case FORMAT_TYPE_NRCHARS: {
- int qualifier = spec.qualifier;
+ u8 qualifier = spec.qualifier;
if (qualifier == 'l') {
long *ip = va_arg(args, long *);
@@ -1583,7 +1622,7 @@ do { \
case FORMAT_TYPE_NRCHARS: {
/* skip %n 's argument */
- int qualifier = spec.qualifier;
+ u8 qualifier = spec.qualifier;
void *skip_arg;
if (qualifier == 'l')
skip_arg = va_arg(args, long *);
@@ -1849,7 +1888,9 @@ int vsscanf(const char *buf, const char *fmt, va_list args)
char *next;
char digit;
int num = 0;
- int qualifier, base, field_width;
+ u8 qualifier;
+ u8 base;
+ s16 field_width;
bool is_sign;
while (*fmt && *str) {
@@ -1927,7 +1968,7 @@ int vsscanf(const char *buf, const char *fmt, va_list args)
{
char *s = (char *)va_arg(args, char *);
if (field_width == -1)
- field_width = INT_MAX;
+ field_width = SHORT_MAX;
/* first, skip leading white space in buffer */
str = skip_spaces(str);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 04:28:07 +0000