1019 lines
18 KiB
C
1019 lines
18 KiB
C
/* misc.c - definitions of misc functions */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc.
|
|
*
|
|
* GRUB is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GRUB is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <grub/misc.h>
|
|
#include <grub/err.h>
|
|
#include <grub/mm.h>
|
|
#include <stdarg.h>
|
|
#include <grub/term.h>
|
|
#include <grub/env.h>
|
|
#include <grub/i18n.h>
|
|
|
|
static int
|
|
grub_vsnprintf_real (char *str, grub_size_t n, const char *fmt, va_list args);
|
|
|
|
static int
|
|
grub_iswordseparator (int c)
|
|
{
|
|
return (grub_isspace (c) || c == ',' || c == ';' || c == '|' || c == '&');
|
|
}
|
|
|
|
/* grub_gettext_dummy is not translating anything. */
|
|
static const char *
|
|
grub_gettext_dummy (const char *s)
|
|
{
|
|
return s;
|
|
}
|
|
|
|
const char* (*grub_gettext) (const char *s) = grub_gettext_dummy;
|
|
|
|
void *
|
|
grub_memmove (void *dest, const void *src, grub_size_t n)
|
|
{
|
|
char *d = (char *) dest;
|
|
const char *s = (const char *) src;
|
|
|
|
if (d < s)
|
|
while (n--)
|
|
*d++ = *s++;
|
|
else
|
|
{
|
|
d += n;
|
|
s += n;
|
|
|
|
while (n--)
|
|
*--d = *--s;
|
|
}
|
|
|
|
return dest;
|
|
}
|
|
|
|
#ifndef APPLE_CC
|
|
void *memmove (void *dest, const void *src, grub_size_t n)
|
|
__attribute__ ((alias ("grub_memmove")));
|
|
/* GCC emits references to memcpy() for struct copies etc. */
|
|
void *memcpy (void *dest, const void *src, grub_size_t n)
|
|
__attribute__ ((alias ("grub_memmove")));
|
|
#else
|
|
void *memcpy (void *dest, const void *src, grub_size_t n)
|
|
{
|
|
return grub_memmove (dest, src, n);
|
|
}
|
|
void *memmove (void *dest, const void *src, grub_size_t n)
|
|
{
|
|
return grub_memmove (dest, src, n);
|
|
}
|
|
#endif
|
|
|
|
char *
|
|
grub_strcpy (char *dest, const char *src)
|
|
{
|
|
char *p = dest;
|
|
|
|
while ((*p++ = *src++) != '\0')
|
|
;
|
|
|
|
return dest;
|
|
}
|
|
|
|
char *
|
|
grub_strncpy (char *dest, const char *src, int c)
|
|
{
|
|
char *p = dest;
|
|
|
|
while ((*p++ = *src++) != '\0' && --c)
|
|
;
|
|
|
|
return dest;
|
|
}
|
|
|
|
char *
|
|
grub_stpcpy (char *dest, const char *src)
|
|
{
|
|
char *d = dest;
|
|
const char *s = src;
|
|
|
|
do
|
|
*d++ = *s;
|
|
while (*s++ != '\0');
|
|
|
|
return d - 1;
|
|
}
|
|
|
|
int
|
|
grub_printf (const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
int ret;
|
|
|
|
va_start (ap, fmt);
|
|
ret = grub_vprintf (fmt, ap);
|
|
va_end (ap);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
grub_printf_ (const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
int ret;
|
|
|
|
va_start (ap, fmt);
|
|
ret = grub_vprintf (_(fmt), ap);
|
|
va_end (ap);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
grub_puts_ (const char *s)
|
|
{
|
|
return grub_puts (_(s));
|
|
}
|
|
|
|
#if defined (APPLE_CC) && ! defined (GRUB_UTIL)
|
|
int
|
|
grub_err_printf (const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
int ret;
|
|
|
|
va_start (ap, fmt);
|
|
ret = grub_vprintf (fmt, ap);
|
|
va_end (ap);
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
#if ! defined (APPLE_CC) && ! defined (GRUB_UTIL)
|
|
int grub_err_printf (const char *fmt, ...)
|
|
__attribute__ ((alias("grub_printf")));
|
|
#endif
|
|
|
|
void
|
|
grub_real_dprintf (const char *file, const int line, const char *condition,
|
|
const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
const char *debug = grub_env_get ("debug");
|
|
|
|
if (! debug)
|
|
return;
|
|
|
|
if (grub_strword (debug, "all") || grub_strword (debug, condition))
|
|
{
|
|
grub_printf ("%s:%d: ", file, line);
|
|
va_start (args, fmt);
|
|
grub_vprintf (fmt, args);
|
|
va_end (args);
|
|
grub_refresh ();
|
|
}
|
|
}
|
|
|
|
#define PREALLOC_SIZE 255
|
|
|
|
int
|
|
grub_vprintf (const char *fmt, va_list args)
|
|
{
|
|
grub_size_t s;
|
|
static char buf[PREALLOC_SIZE + 1];
|
|
char *curbuf = buf;
|
|
va_list ap2;
|
|
va_copy (ap2, args);
|
|
|
|
s = grub_vsnprintf_real (buf, PREALLOC_SIZE, fmt, args);
|
|
if (s > PREALLOC_SIZE)
|
|
{
|
|
curbuf = grub_malloc (s + 1);
|
|
if (!curbuf)
|
|
{
|
|
grub_errno = GRUB_ERR_NONE;
|
|
buf[PREALLOC_SIZE - 3] = '.';
|
|
buf[PREALLOC_SIZE - 2] = '.';
|
|
buf[PREALLOC_SIZE - 1] = '.';
|
|
buf[PREALLOC_SIZE] = 0;
|
|
}
|
|
else
|
|
s = grub_vsnprintf_real (curbuf, s, fmt, ap2);
|
|
}
|
|
|
|
grub_xputs (curbuf);
|
|
|
|
if (curbuf != buf)
|
|
grub_free (curbuf);
|
|
|
|
return s;
|
|
}
|
|
|
|
int
|
|
grub_memcmp (const void *s1, const void *s2, grub_size_t n)
|
|
{
|
|
const char *t1 = s1;
|
|
const char *t2 = s2;
|
|
|
|
while (n--)
|
|
{
|
|
if (*t1 != *t2)
|
|
return (int) *t1 - (int) *t2;
|
|
|
|
t1++;
|
|
t2++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#ifndef APPLE_CC
|
|
int memcmp (const void *s1, const void *s2, grub_size_t n)
|
|
__attribute__ ((alias ("grub_memcmp")));
|
|
#else
|
|
int memcmp (const void *s1, const void *s2, grub_size_t n)
|
|
{
|
|
return grub_memcmp (s1, s2, n);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
grub_strcmp (const char *s1, const char *s2)
|
|
{
|
|
while (*s1 && *s2)
|
|
{
|
|
if (*s1 != *s2)
|
|
break;
|
|
|
|
s1++;
|
|
s2++;
|
|
}
|
|
|
|
return (int) *s1 - (int) *s2;
|
|
}
|
|
|
|
int
|
|
grub_strncmp (const char *s1, const char *s2, grub_size_t n)
|
|
{
|
|
if (n == 0)
|
|
return 0;
|
|
|
|
while (*s1 && *s2 && --n)
|
|
{
|
|
if (*s1 != *s2)
|
|
break;
|
|
|
|
s1++;
|
|
s2++;
|
|
}
|
|
|
|
return (int) *s1 - (int) *s2;
|
|
}
|
|
|
|
char *
|
|
grub_strchr (const char *s, int c)
|
|
{
|
|
do
|
|
{
|
|
if (*s == c)
|
|
return (char *) s;
|
|
}
|
|
while (*s++);
|
|
|
|
return 0;
|
|
}
|
|
|
|
char *
|
|
grub_strrchr (const char *s, int c)
|
|
{
|
|
char *p = NULL;
|
|
|
|
do
|
|
{
|
|
if (*s == c)
|
|
p = (char *) s;
|
|
}
|
|
while (*s++);
|
|
|
|
return p;
|
|
}
|
|
|
|
/* Copied from gnulib.
|
|
Written by Bruno Haible <bruno@clisp.org>, 2005. */
|
|
char *
|
|
grub_strstr (const char *haystack, const char *needle)
|
|
{
|
|
/* Be careful not to look at the entire extent of haystack or needle
|
|
until needed. This is useful because of these two cases:
|
|
- haystack may be very long, and a match of needle found early,
|
|
- needle may be very long, and not even a short initial segment of
|
|
needle may be found in haystack. */
|
|
if (*needle != '\0')
|
|
{
|
|
/* Speed up the following searches of needle by caching its first
|
|
character. */
|
|
char b = *needle++;
|
|
|
|
for (;; haystack++)
|
|
{
|
|
if (*haystack == '\0')
|
|
/* No match. */
|
|
return NULL;
|
|
if (*haystack == b)
|
|
/* The first character matches. */
|
|
{
|
|
const char *rhaystack = haystack + 1;
|
|
const char *rneedle = needle;
|
|
|
|
for (;; rhaystack++, rneedle++)
|
|
{
|
|
if (*rneedle == '\0')
|
|
/* Found a match. */
|
|
return (char *) haystack;
|
|
if (*rhaystack == '\0')
|
|
/* No match. */
|
|
return NULL;
|
|
if (*rhaystack != *rneedle)
|
|
/* Nothing in this round. */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
return (char *) haystack;
|
|
}
|
|
|
|
int
|
|
grub_strword (const char *haystack, const char *needle)
|
|
{
|
|
const char *n_pos = needle;
|
|
|
|
while (grub_iswordseparator (*haystack))
|
|
haystack++;
|
|
|
|
while (*haystack)
|
|
{
|
|
/* Crawl both the needle and the haystack word we're on. */
|
|
while(*haystack && !grub_iswordseparator (*haystack)
|
|
&& *haystack == *n_pos)
|
|
{
|
|
haystack++;
|
|
n_pos++;
|
|
}
|
|
|
|
/* If we reached the end of both words at the same time, the word
|
|
is found. If not, eat everything in the haystack that isn't the
|
|
next word (or the end of string) and "reset" the needle. */
|
|
if ( (!*haystack || grub_iswordseparator (*haystack))
|
|
&& (!*n_pos || grub_iswordseparator (*n_pos)))
|
|
return 1;
|
|
else
|
|
{
|
|
n_pos = needle;
|
|
while (*haystack && !grub_iswordseparator (*haystack))
|
|
haystack++;
|
|
while (grub_iswordseparator (*haystack))
|
|
haystack++;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
grub_isspace (int c)
|
|
{
|
|
return (c == '\n' || c == '\r' || c == ' ' || c == '\t');
|
|
}
|
|
|
|
int
|
|
grub_isprint (int c)
|
|
{
|
|
return (c >= ' ' && c <= '~');
|
|
}
|
|
|
|
|
|
unsigned long
|
|
grub_strtoul (const char *str, char **end, int base)
|
|
{
|
|
unsigned long long num;
|
|
|
|
num = grub_strtoull (str, end, base);
|
|
if (num > ~0UL)
|
|
{
|
|
grub_error (GRUB_ERR_OUT_OF_RANGE, "overflow is detected");
|
|
return ~0UL;
|
|
}
|
|
|
|
return (unsigned long) num;
|
|
}
|
|
|
|
unsigned long long
|
|
grub_strtoull (const char *str, char **end, int base)
|
|
{
|
|
unsigned long long num = 0;
|
|
int found = 0;
|
|
|
|
/* Skip white spaces. */
|
|
while (*str && grub_isspace (*str))
|
|
str++;
|
|
|
|
/* Guess the base, if not specified. The prefix `0x' means 16, and
|
|
the prefix `0' means 8. */
|
|
if (str[0] == '0')
|
|
{
|
|
if (str[1] == 'x')
|
|
{
|
|
if (base == 0 || base == 16)
|
|
{
|
|
base = 16;
|
|
str += 2;
|
|
}
|
|
}
|
|
else if (base == 0 && str[1] >= '0' && str[1] <= '7')
|
|
base = 8;
|
|
}
|
|
|
|
if (base == 0)
|
|
base = 10;
|
|
|
|
while (*str)
|
|
{
|
|
unsigned long digit;
|
|
|
|
digit = grub_tolower (*str) - '0';
|
|
if (digit > 9)
|
|
{
|
|
digit += '0' - 'a' + 10;
|
|
if (digit >= (unsigned long) base)
|
|
break;
|
|
}
|
|
|
|
found = 1;
|
|
|
|
/* NUM * BASE + DIGIT > ~0ULL */
|
|
if (num > grub_divmod64 (~0ULL - digit, base, 0))
|
|
{
|
|
grub_error (GRUB_ERR_OUT_OF_RANGE, "overflow is detected");
|
|
return ~0ULL;
|
|
}
|
|
|
|
num = num * base + digit;
|
|
str++;
|
|
}
|
|
|
|
if (! found)
|
|
{
|
|
grub_error (GRUB_ERR_BAD_NUMBER, "unrecognized number");
|
|
return 0;
|
|
}
|
|
|
|
if (end)
|
|
*end = (char *) str;
|
|
|
|
return num;
|
|
}
|
|
|
|
char *
|
|
grub_strdup (const char *s)
|
|
{
|
|
grub_size_t len;
|
|
char *p;
|
|
|
|
len = grub_strlen (s) + 1;
|
|
p = (char *) grub_malloc (len);
|
|
if (! p)
|
|
return 0;
|
|
|
|
return grub_memcpy (p, s, len);
|
|
}
|
|
|
|
char *
|
|
grub_strndup (const char *s, grub_size_t n)
|
|
{
|
|
grub_size_t len;
|
|
char *p;
|
|
|
|
len = grub_strlen (s);
|
|
if (len > n)
|
|
len = n;
|
|
p = (char *) grub_malloc (len + 1);
|
|
if (! p)
|
|
return 0;
|
|
|
|
grub_memcpy (p, s, len);
|
|
p[len] = '\0';
|
|
return p;
|
|
}
|
|
|
|
void *
|
|
grub_memset (void *s, int c, grub_size_t len)
|
|
{
|
|
void *p = s;
|
|
grub_uint8_t pattern8 = c;
|
|
|
|
if (len >= 3 * sizeof (unsigned long))
|
|
{
|
|
unsigned long patternl = 0;
|
|
grub_size_t i;
|
|
|
|
for (i = 0; i < sizeof (unsigned long); i++)
|
|
patternl |= ((unsigned long) pattern8) << (8 * i);
|
|
|
|
while (len > 0 && (((grub_addr_t) p) & (sizeof (unsigned long) - 1)))
|
|
{
|
|
*(grub_uint8_t *) p = pattern8;
|
|
p = (grub_uint8_t *) p + 1;
|
|
len--;
|
|
}
|
|
while (len >= sizeof (unsigned long))
|
|
{
|
|
*(unsigned long *) p = patternl;
|
|
p = (unsigned long *) p + 1;
|
|
len -= sizeof (unsigned long);
|
|
}
|
|
}
|
|
|
|
while (len > 0)
|
|
{
|
|
*(grub_uint8_t *) p = pattern8;
|
|
p = (grub_uint8_t *) p + 1;
|
|
len--;
|
|
}
|
|
|
|
return s;
|
|
}
|
|
#ifndef APPLE_CC
|
|
void *memset (void *s, int c, grub_size_t n)
|
|
__attribute__ ((alias ("grub_memset")));
|
|
#else
|
|
void *memset (void *s, int c, grub_size_t n)
|
|
{
|
|
return grub_memset (s, c, n);
|
|
}
|
|
#endif
|
|
|
|
grub_size_t
|
|
grub_strlen (const char *s)
|
|
{
|
|
const char *p = s;
|
|
|
|
while (*p)
|
|
p++;
|
|
|
|
return p - s;
|
|
}
|
|
|
|
static inline void
|
|
grub_reverse (char *str)
|
|
{
|
|
char *p = str + grub_strlen (str) - 1;
|
|
|
|
while (str < p)
|
|
{
|
|
char tmp;
|
|
|
|
tmp = *str;
|
|
*str = *p;
|
|
*p = tmp;
|
|
str++;
|
|
p--;
|
|
}
|
|
}
|
|
|
|
/* Divide N by D, return the quotient, and store the remainder in *R. */
|
|
grub_uint64_t
|
|
grub_divmod64 (grub_uint64_t n, grub_uint32_t d, grub_uint32_t *r)
|
|
{
|
|
/* This algorithm is typically implemented by hardware. The idea
|
|
is to get the highest bit in N, 64 times, by keeping
|
|
upper(N * 2^i) = upper((Q * 10 + M) * 2^i), where upper
|
|
represents the high 64 bits in 128-bits space. */
|
|
unsigned bits = 64;
|
|
unsigned long long q = 0;
|
|
unsigned m = 0;
|
|
|
|
/* Skip the slow computation if 32-bit arithmetic is possible. */
|
|
if (n < 0xffffffff)
|
|
{
|
|
if (r)
|
|
*r = ((grub_uint32_t) n) % d;
|
|
|
|
return ((grub_uint32_t) n) / d;
|
|
}
|
|
|
|
while (bits--)
|
|
{
|
|
m <<= 1;
|
|
|
|
if (n & (1ULL << 63))
|
|
m |= 1;
|
|
|
|
q <<= 1;
|
|
n <<= 1;
|
|
|
|
if (m >= d)
|
|
{
|
|
q |= 1;
|
|
m -= d;
|
|
}
|
|
}
|
|
|
|
if (r)
|
|
*r = m;
|
|
|
|
return q;
|
|
}
|
|
|
|
/* Convert a long long value to a string. This function avoids 64-bit
|
|
modular arithmetic or divisions. */
|
|
static char *
|
|
grub_lltoa (char *str, int c, unsigned long long n)
|
|
{
|
|
unsigned base = (c == 'x') ? 16 : 10;
|
|
char *p;
|
|
|
|
if ((long long) n < 0 && c == 'd')
|
|
{
|
|
n = (unsigned long long) (-((long long) n));
|
|
*str++ = '-';
|
|
}
|
|
|
|
p = str;
|
|
|
|
if (base == 16)
|
|
do
|
|
{
|
|
unsigned d = (unsigned) (n & 0xf);
|
|
*p++ = (d > 9) ? d + 'a' - 10 : d + '0';
|
|
}
|
|
while (n >>= 4);
|
|
else
|
|
/* BASE == 10 */
|
|
do
|
|
{
|
|
unsigned m;
|
|
|
|
n = grub_divmod64 (n, 10, &m);
|
|
*p++ = m + '0';
|
|
}
|
|
while (n);
|
|
|
|
*p = 0;
|
|
|
|
grub_reverse (str);
|
|
return p;
|
|
}
|
|
|
|
static int
|
|
grub_vsnprintf_real (char *str, grub_size_t max_len, const char *fmt, va_list args)
|
|
{
|
|
char c;
|
|
grub_size_t count = 0;
|
|
auto void write_char (unsigned char ch);
|
|
auto void write_str (const char *s);
|
|
auto void write_fill (const char ch, int n);
|
|
|
|
void write_char (unsigned char ch)
|
|
{
|
|
if (count < max_len)
|
|
*str++ = ch;
|
|
|
|
count++;
|
|
}
|
|
|
|
void write_str (const char *s)
|
|
{
|
|
while (*s)
|
|
write_char (*s++);
|
|
}
|
|
|
|
void write_fill (const char ch, int n)
|
|
{
|
|
int i;
|
|
for (i = 0; i < n; i++)
|
|
write_char (ch);
|
|
}
|
|
|
|
while ((c = *fmt++) != 0)
|
|
{
|
|
if (c != '%')
|
|
write_char (c);
|
|
else
|
|
{
|
|
char tmp[32];
|
|
char *p;
|
|
unsigned int format1 = 0;
|
|
unsigned int format2 = ~ 0U;
|
|
char zerofill = ' ';
|
|
int rightfill = 0;
|
|
int n;
|
|
int longfmt = 0;
|
|
int longlongfmt = 0;
|
|
int unsig = 0;
|
|
|
|
if (*fmt && *fmt =='-')
|
|
{
|
|
rightfill = 1;
|
|
fmt++;
|
|
}
|
|
|
|
p = (char *) fmt;
|
|
/* Read formatting parameters. */
|
|
while (*p && grub_isdigit (*p))
|
|
p++;
|
|
|
|
if (p > fmt)
|
|
{
|
|
char s[p - fmt + 1];
|
|
grub_strncpy (s, fmt, p - fmt);
|
|
s[p - fmt] = 0;
|
|
if (s[0] == '0')
|
|
zerofill = '0';
|
|
format1 = grub_strtoul (s, 0, 10);
|
|
fmt = p;
|
|
}
|
|
|
|
if (*p && *p == '.')
|
|
{
|
|
p++;
|
|
fmt++;
|
|
while (*p && grub_isdigit (*p))
|
|
p++;
|
|
|
|
if (p > fmt)
|
|
{
|
|
char fstr[p - fmt + 1];
|
|
grub_strncpy (fstr, fmt, p - fmt);
|
|
fstr[p - fmt] = 0;
|
|
format2 = grub_strtoul (fstr, 0, 10);
|
|
fmt = p;
|
|
}
|
|
}
|
|
|
|
c = *fmt++;
|
|
if (c == 'l')
|
|
{
|
|
longfmt = 1;
|
|
c = *fmt++;
|
|
if (c == 'l')
|
|
{
|
|
longlongfmt = 1;
|
|
c = *fmt++;
|
|
}
|
|
}
|
|
|
|
switch (c)
|
|
{
|
|
case 'p':
|
|
write_str ("0x");
|
|
c = 'x';
|
|
longlongfmt |= (sizeof (void *) == sizeof (long long));
|
|
/* Fall through. */
|
|
case 'x':
|
|
case 'u':
|
|
unsig = 1;
|
|
/* Fall through. */
|
|
case 'd':
|
|
if (longlongfmt)
|
|
{
|
|
long long ll;
|
|
|
|
ll = va_arg (args, long long);
|
|
grub_lltoa (tmp, c, ll);
|
|
}
|
|
else if (longfmt && unsig)
|
|
{
|
|
unsigned long l = va_arg (args, unsigned long);
|
|
grub_lltoa (tmp, c, l);
|
|
}
|
|
else if (longfmt)
|
|
{
|
|
long l = va_arg (args, long);
|
|
grub_lltoa (tmp, c, l);
|
|
}
|
|
else if (unsig)
|
|
{
|
|
unsigned u = va_arg (args, unsigned);
|
|
grub_lltoa (tmp, c, u);
|
|
}
|
|
else
|
|
{
|
|
n = va_arg (args, int);
|
|
grub_lltoa (tmp, c, n);
|
|
}
|
|
if (! rightfill && grub_strlen (tmp) < format1)
|
|
write_fill (zerofill, format1 - grub_strlen (tmp));
|
|
write_str (tmp);
|
|
if (rightfill && grub_strlen (tmp) < format1)
|
|
write_fill (zerofill, format1 - grub_strlen (tmp));
|
|
break;
|
|
|
|
case 'c':
|
|
n = va_arg (args, int);
|
|
write_char (n & 0xff);
|
|
break;
|
|
|
|
case 'C':
|
|
{
|
|
grub_uint32_t code = va_arg (args, grub_uint32_t);
|
|
int shift;
|
|
unsigned mask;
|
|
|
|
if (code <= 0x7f)
|
|
{
|
|
shift = 0;
|
|
mask = 0;
|
|
}
|
|
else if (code <= 0x7ff)
|
|
{
|
|
shift = 6;
|
|
mask = 0xc0;
|
|
}
|
|
else if (code <= 0xffff)
|
|
{
|
|
shift = 12;
|
|
mask = 0xe0;
|
|
}
|
|
else if (code <= 0x1fffff)
|
|
{
|
|
shift = 18;
|
|
mask = 0xf0;
|
|
}
|
|
else if (code <= 0x3ffffff)
|
|
{
|
|
shift = 24;
|
|
mask = 0xf8;
|
|
}
|
|
else if (code <= 0x7fffffff)
|
|
{
|
|
shift = 30;
|
|
mask = 0xfc;
|
|
}
|
|
else
|
|
{
|
|
code = '?';
|
|
shift = 0;
|
|
mask = 0;
|
|
}
|
|
|
|
write_char (mask | (code >> shift));
|
|
|
|
for (shift -= 6; shift >= 0; shift -= 6)
|
|
write_char (0x80 | (0x3f & (code >> shift)));
|
|
}
|
|
break;
|
|
|
|
case 's':
|
|
p = va_arg (args, char *);
|
|
if (p)
|
|
{
|
|
grub_size_t len = 0;
|
|
while (len < format2 && p[len])
|
|
len++;
|
|
|
|
if (!rightfill && len < format1)
|
|
write_fill (zerofill, format1 - len);
|
|
|
|
grub_size_t i;
|
|
for (i = 0; i < len; i++)
|
|
write_char (*p++);
|
|
|
|
if (rightfill && len < format1)
|
|
write_fill (zerofill, format1 - len);
|
|
}
|
|
else
|
|
write_str ("(null)");
|
|
|
|
break;
|
|
|
|
default:
|
|
write_char (c);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
*str = '\0';
|
|
|
|
return count;
|
|
}
|
|
|
|
int
|
|
grub_vsnprintf (char *str, grub_size_t n, const char *fmt, va_list ap)
|
|
{
|
|
grub_size_t ret;
|
|
|
|
if (!n)
|
|
return 0;
|
|
|
|
n--;
|
|
|
|
ret = grub_vsnprintf_real (str, n, fmt, ap);
|
|
|
|
return ret < n ? ret : n;
|
|
}
|
|
|
|
int
|
|
grub_snprintf (char *str, grub_size_t n, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
int ret;
|
|
|
|
va_start (ap, fmt);
|
|
ret = grub_vsnprintf (str, n, fmt, ap);
|
|
va_end (ap);
|
|
|
|
return ret;
|
|
}
|
|
|
|
char *
|
|
grub_xvasprintf (const char *fmt, va_list ap)
|
|
{
|
|
grub_size_t s, as = PREALLOC_SIZE;
|
|
char *ret;
|
|
|
|
while (1)
|
|
{
|
|
va_list ap2;
|
|
va_copy (ap2, ap);
|
|
ret = grub_malloc (as + 1);
|
|
if (!ret)
|
|
return NULL;
|
|
|
|
s = grub_vsnprintf_real (ret, as, fmt, ap2);
|
|
if (s <= as)
|
|
return ret;
|
|
|
|
grub_free (ret);
|
|
as = s;
|
|
}
|
|
}
|
|
|
|
char *
|
|
grub_xasprintf (const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
char *ret;
|
|
|
|
va_start (ap, fmt);
|
|
ret = grub_xvasprintf (fmt, ap);
|
|
va_end (ap);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Abort GRUB. This function does not return. */
|
|
void
|
|
grub_abort (void)
|
|
{
|
|
grub_printf ("\nAborted.");
|
|
|
|
#ifndef GRUB_UTIL
|
|
if (grub_term_inputs)
|
|
#endif
|
|
{
|
|
grub_printf (" Press any key to exit.");
|
|
grub_getkey ();
|
|
}
|
|
|
|
grub_exit ();
|
|
}
|
|
|
|
#if ! defined (APPLE_CC) && !defined (GRUB_UTIL)
|
|
/* GCC emits references to abort(). */
|
|
void abort (void) __attribute__ ((alias ("grub_abort")));
|
|
#endif
|
|
|
|
#if defined(NEED_ENABLE_EXECUTE_STACK) && !defined(GRUB_UTIL) && !defined(GRUB_MACHINE_EMU)
|
|
/* Some gcc versions generate a call to this function
|
|
in trampolines for nested functions. */
|
|
void __enable_execute_stack (void *addr __attribute__ ((unused)))
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#if defined (NEED_REGISTER_FRAME_INFO) && !defined(GRUB_UTIL)
|
|
void __register_frame_info (void)
|
|
{
|
|
}
|
|
|
|
void __deregister_frame_info (void)
|
|
{
|
|
}
|
|
#endif
|
|
|