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-rw-r--r--grub-core/kern/misc.c1267
1 files changed, 1267 insertions, 0 deletions
diff --git a/grub-core/kern/misc.c b/grub-core/kern/misc.c
new file mode 100644
index 0000000..3af336e
--- /dev/null
+++ b/grub-core/kern/misc.c
@@ -0,0 +1,1267 @@
+/* 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>
+
+union printf_arg
+{
+ /* Yes, type is also part of union as the moment we fill the value
+ we don't need to store its type anymore (when we'll need it, we'll
+ have format spec again. So save some space. */
+ enum
+ {
+ INT, LONG, LONGLONG,
+ UNSIGNED_INT = 3, UNSIGNED_LONG, UNSIGNED_LONGLONG,
+ STRING
+ } type;
+ long long ll;
+};
+
+struct printf_args
+{
+ union printf_arg prealloc[32];
+ union printf_arg *ptr;
+ grub_size_t count;
+};
+
+static void
+parse_printf_args (const char *fmt0, struct printf_args *args,
+ va_list args_in);
+static int
+grub_vsnprintf_real (char *str, grub_size_t max_len, const char *fmt0,
+ struct printf_args *args);
+
+static void
+free_printf_args (struct printf_args *args)
+{
+ if (args->ptr != args->prealloc)
+ grub_free (args->ptr);
+}
+
+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;
+}
+
+char *
+grub_strcpy (char *dest, const char *src)
+{
+ char *p = dest;
+
+ while ((*p++ = *src++) != '\0')
+ ;
+
+ return dest;
+}
+
+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__) && ! 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__) && ! defined (GRUB_UTIL)
+int grub_err_printf (const char *fmt, ...)
+__attribute__ ((alias("grub_printf")));
+#endif
+
+int
+grub_debug_enabled (const char * condition)
+{
+ const char *debug;
+
+ debug = grub_env_get ("debug");
+ if (!debug)
+ return 0;
+
+ if (grub_strword (debug, "all") || grub_strword (debug, condition))
+ return 1;
+
+ return 0;
+}
+
+void
+grub_real_dprintf (const char *file, const int line, const char *condition,
+ const char *fmt, ...)
+{
+ va_list args;
+
+ if (grub_debug_enabled (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 ap)
+{
+ grub_size_t s;
+ static char buf[PREALLOC_SIZE + 1];
+ char *curbuf = buf;
+ struct printf_args args;
+
+ parse_printf_args (fmt, &args, ap);
+
+ 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;
+ curbuf = buf;
+ }
+ else
+ s = grub_vsnprintf_real (curbuf, s, fmt, &args);
+ }
+
+ free_printf_args (&args);
+
+ 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 grub_uint8_t *t1 = s1;
+ const grub_uint8_t *t2 = s2;
+
+ while (n--)
+ {
+ if (*t1 != *t2)
+ return (int) *t1 - (int) *t2;
+
+ t1++;
+ t2++;
+ }
+
+ return 0;
+}
+
+int
+grub_strcmp (const char *s1, const char *s2)
+{
+ while (*s1 && *s2)
+ {
+ if (*s1 != *s2)
+ break;
+
+ s1++;
+ s2++;
+ }
+
+ return (int) (grub_uint8_t) *s1 - (int) (grub_uint8_t) *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) (grub_uint8_t) *s1 - (int) (grub_uint8_t) *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;
+}
+
+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');
+}
+
+unsigned long
+grub_strtoul (const char * restrict str, const char ** const restrict end,
+ int base)
+{
+ unsigned long long num;
+
+ num = grub_strtoull (str, end, base);
+#if GRUB_CPU_SIZEOF_LONG != 8
+ if (num > ~0UL)
+ {
+ grub_error (GRUB_ERR_OUT_OF_RANGE, N_("overflow is detected"));
+ return ~0UL;
+ }
+#endif
+
+ return (unsigned long) num;
+}
+
+unsigned long long
+grub_strtoull (const char * restrict str, const char ** const restrict end,
+ int base)
+{
+ unsigned long long num = 0;
+ int found = 0;
+
+ /* Skip white spaces. */
+ /* grub_isspace checks that *str != '\0'. */
+ while (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 >= 'a' - '0')
+ digit += '0' - 'a' + 10;
+ else if (digit > 9)
+ break;
+
+ 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,
+ N_("overflow is detected"));
+
+ if (end)
+ *end = (char *) str;
+
+ return ~0ULL;
+ }
+
+ num = num * base + digit;
+ str++;
+ }
+
+ if (! found)
+ {
+ grub_error (GRUB_ERR_BAD_NUMBER,
+ N_("unrecognized number"));
+
+ if (end)
+ *end = (char *) str;
+
+ 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;
+}
+
+/* clang detects that we're implementing here a memset so it decides to
+ optimise and calls memset resulting in infinite recursion. With volatile
+ we make it not optimise in this way. */
+#ifdef __clang__
+#define VOLATILE_CLANG volatile
+#else
+#define VOLATILE_CLANG
+#endif
+
+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)))
+ {
+ *(VOLATILE_CLANG grub_uint8_t *) p = pattern8;
+ p = (grub_uint8_t *) p + 1;
+ len--;
+ }
+ while (len >= sizeof (unsigned long))
+ {
+ *(VOLATILE_CLANG unsigned long *) p = patternl;
+ p = (unsigned long *) p + 1;
+ len -= sizeof (unsigned long);
+ }
+ }
+
+ while (len > 0)
+ {
+ *(VOLATILE_CLANG grub_uint8_t *) p = pattern8;
+ p = (grub_uint8_t *) p + 1;
+ len--;
+ }
+
+ return s;
+}
+
+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_uint64_t d, grub_uint64_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) = (Q * D + M), where upper
+ represents the high 64 bits in 128-bits space. */
+ unsigned bits = 64;
+ grub_uint64_t q = 0;
+ grub_uint64_t m = 0;
+
+ /* ARM and IA64 don't have a fast 32-bit division.
+ Using that code would just make us use software division routines, calling
+ ourselves indirectly and hence getting infinite recursion.
+ */
+#if !GRUB_DIVISION_IN_SOFTWARE
+ /* Skip the slow computation if 32-bit arithmetic is possible. */
+ if (n < 0xffffffff && d < 0xffffffff)
+ {
+ if (r)
+ *r = ((grub_uint32_t) n) % (grub_uint32_t) d;
+
+ return ((grub_uint32_t) n) / (grub_uint32_t) d;
+ }
+#endif
+
+ 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 inline char *
+grub_lltoa (char *str, int c, unsigned long long n)
+{
+ unsigned base = ((c == 'x') || (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 + ((c == 'x') ? 'a' : 'A') - 10 : d + '0';
+ }
+ while (n >>= 4);
+ else
+ /* BASE == 10 */
+ do
+ {
+ grub_uint64_t m;
+
+ n = grub_divmod64 (n, 10, &m);
+ *p++ = m + '0';
+ }
+ while (n);
+
+ *p = 0;
+
+ grub_reverse (str);
+ return p;
+}
+
+/*
+ * Parse printf() fmt0 string into args arguments.
+ *
+ * The parsed arguments are either used by a printf() function to format the fmt0
+ * string or they are used to compare a format string from an untrusted source
+ * against a format string with expected arguments.
+ *
+ * When the fmt_check is set to !0, e.g. 1, then this function is executed in
+ * printf() format check mode. This enforces stricter rules for parsing the
+ * fmt0 to limit exposure to possible errors in printf() handling. It also
+ * disables positional parameters, "$", because some formats, e.g "%s%1$d",
+ * cannot be validated with the current implementation.
+ *
+ * The max_args allows to set a maximum number of accepted arguments. If the fmt0
+ * string defines more arguments than the max_args then the parse_printf_arg_fmt()
+ * function returns an error. This is currently used for format check only.
+ */
+static grub_err_t
+parse_printf_arg_fmt (const char *fmt0, struct printf_args *args,
+ int fmt_check, grub_size_t max_args)
+{
+ const char *fmt;
+ char c;
+ grub_size_t n = 0;
+
+ args->count = 0;
+
+ COMPILE_TIME_ASSERT (sizeof (int) == sizeof (grub_uint32_t));
+ COMPILE_TIME_ASSERT (sizeof (int) <= sizeof (long long));
+ COMPILE_TIME_ASSERT (sizeof (long) <= sizeof (long long));
+ COMPILE_TIME_ASSERT (sizeof (long long) == sizeof (void *)
+ || sizeof (int) == sizeof (void *));
+
+ fmt = fmt0;
+ while ((c = *fmt++) != 0)
+ {
+ if (c != '%')
+ continue;
+
+ if (*fmt =='-')
+ fmt++;
+
+ while (grub_isdigit (*fmt))
+ fmt++;
+
+ if (*fmt == '$')
+ {
+ if (fmt_check)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ "positional arguments are not supported");
+ fmt++;
+ }
+
+ if (*fmt =='-')
+ fmt++;
+
+ while (grub_isdigit (*fmt))
+ fmt++;
+
+ if (*fmt =='.')
+ fmt++;
+
+ while (grub_isdigit (*fmt))
+ fmt++;
+
+ c = *fmt++;
+ if (c == 'l')
+ c = *fmt++;
+ if (c == 'l')
+ c = *fmt++;
+
+ switch (c)
+ {
+ case 'p':
+ case 'x':
+ case 'X':
+ case 'u':
+ case 'd':
+ case 'c':
+ case 'C':
+ case 's':
+ args->count++;
+ break;
+ case '%':
+ /* "%%" is the escape sequence to output "%". */
+ break;
+ default:
+ if (fmt_check)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "unexpected format");
+ break;
+ }
+ }
+
+ if (fmt_check && args->count > max_args)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "too many arguments");
+
+ if (args->count <= ARRAY_SIZE (args->prealloc))
+ args->ptr = args->prealloc;
+ else
+ {
+ args->ptr = grub_calloc (args->count, sizeof (args->ptr[0]));
+ if (!args->ptr)
+ {
+ if (fmt_check)
+ return grub_errno;
+
+ grub_errno = GRUB_ERR_NONE;
+ args->ptr = args->prealloc;
+ args->count = ARRAY_SIZE (args->prealloc);
+ }
+ }
+
+ grub_memset (args->ptr, 0, args->count * sizeof (args->ptr[0]));
+
+ fmt = fmt0;
+ n = 0;
+ while ((c = *fmt++) != 0)
+ {
+ int longfmt = 0;
+ grub_size_t curn;
+ const char *p;
+
+ if (c != '%')
+ continue;
+
+ curn = n++;
+
+ if (*fmt =='-')
+ fmt++;
+
+ p = fmt;
+
+ while (grub_isdigit (*fmt))
+ fmt++;
+
+ if (*fmt == '$')
+ {
+ curn = grub_strtoull (p, 0, 10) - 1;
+ fmt++;
+ }
+
+ if (*fmt =='-')
+ fmt++;
+
+ while (grub_isdigit (*fmt))
+ fmt++;
+
+ if (*fmt =='.')
+ fmt++;
+
+ while (grub_isdigit (*fmt))
+ fmt++;
+
+ c = *fmt++;
+ if (c == '%')
+ {
+ n--;
+ continue;
+ }
+
+ if (c == 'l')
+ {
+ c = *fmt++;
+ longfmt = 1;
+ }
+ if (c == 'l')
+ {
+ c = *fmt++;
+ longfmt = 2;
+ }
+ if (curn >= args->count)
+ continue;
+ switch (c)
+ {
+ case 'x':
+ case 'X':
+ case 'u':
+ args->ptr[curn].type = UNSIGNED_INT + longfmt;
+ break;
+ case 'd':
+ args->ptr[curn].type = INT + longfmt;
+ break;
+ case 'p':
+ if (sizeof (void *) == sizeof (long long))
+ args->ptr[curn].type = UNSIGNED_LONGLONG;
+ else
+ args->ptr[curn].type = UNSIGNED_INT;
+ break;
+ case 's':
+ args->ptr[curn].type = STRING;
+ break;
+ case 'C':
+ case 'c':
+ args->ptr[curn].type = INT;
+ break;
+ }
+ }
+
+ return GRUB_ERR_NONE;
+}
+
+static void
+parse_printf_args (const char *fmt0, struct printf_args *args, va_list args_in)
+{
+ grub_size_t n;
+
+ parse_printf_arg_fmt (fmt0, args, 0, 0);
+
+ for (n = 0; n < args->count; n++)
+ switch (args->ptr[n].type)
+ {
+ case INT:
+ args->ptr[n].ll = va_arg (args_in, int);
+ break;
+ case LONG:
+ args->ptr[n].ll = va_arg (args_in, long);
+ break;
+ case UNSIGNED_INT:
+ args->ptr[n].ll = va_arg (args_in, unsigned int);
+ break;
+ case UNSIGNED_LONG:
+ args->ptr[n].ll = va_arg (args_in, unsigned long);
+ break;
+ case LONGLONG:
+ case UNSIGNED_LONGLONG:
+ args->ptr[n].ll = va_arg (args_in, long long);
+ break;
+ case STRING:
+ if (sizeof (void *) == sizeof (long long))
+ args->ptr[n].ll = va_arg (args_in, long long);
+ else
+ args->ptr[n].ll = va_arg (args_in, unsigned int);
+ break;
+ }
+}
+
+static inline void __attribute__ ((always_inline))
+write_char (char *str, grub_size_t *count, grub_size_t max_len, unsigned char ch)
+{
+ if (*count < max_len)
+ str[*count] = ch;
+
+ (*count)++;
+}
+
+static int
+grub_vsnprintf_real (char *str, grub_size_t max_len, const char *fmt0,
+ struct printf_args *args)
+{
+ char c;
+ grub_size_t n = 0;
+ grub_size_t count = 0;
+ const char *fmt;
+
+ fmt = fmt0;
+
+ while ((c = *fmt++) != 0)
+ {
+ unsigned int format1 = 0;
+ unsigned int format2 = ~ 0U;
+ char zerofill = ' ';
+ char rightfill = 0;
+ grub_size_t curn;
+
+ if (c != '%')
+ {
+ write_char (str, &count, max_len,c);
+ continue;
+ }
+
+ curn = n++;
+
+ rescan:;
+
+ if (*fmt =='-')
+ {
+ rightfill = 1;
+ fmt++;
+ }
+
+ /* Read formatting parameters. */
+ if (grub_isdigit (*fmt))
+ {
+ if (fmt[0] == '0')
+ zerofill = '0';
+ format1 = grub_strtoul (fmt, &fmt, 10);
+ }
+
+ if (*fmt == '.')
+ fmt++;
+
+ if (grub_isdigit (*fmt))
+ format2 = grub_strtoul (fmt, &fmt, 10);
+
+ if (*fmt == '$')
+ {
+ curn = format1 - 1;
+ fmt++;
+ format1 = 0;
+ format2 = ~ 0U;
+ zerofill = ' ';
+ rightfill = 0;
+
+ goto rescan;
+ }
+
+ c = *fmt++;
+ if (c == 'l')
+ c = *fmt++;
+ if (c == 'l')
+ c = *fmt++;
+
+ if (c == '%')
+ {
+ write_char (str, &count, max_len,c);
+ n--;
+ continue;
+ }
+
+ if (curn >= args->count)
+ continue;
+
+ long long curarg = args->ptr[curn].ll;
+
+ switch (c)
+ {
+ case 'p':
+ write_char (str, &count, max_len, '0');
+ write_char (str, &count, max_len, 'x');
+ c = 'x';
+ /* Fall through. */
+ case 'x':
+ case 'X':
+ case 'u':
+ case 'd':
+ {
+ char tmp[32];
+ const char *p = tmp;
+ grub_size_t len;
+ grub_size_t fill;
+
+ len = grub_lltoa (tmp, c, curarg) - tmp;
+ fill = len < format1 ? format1 - len : 0;
+ if (! rightfill)
+ while (fill--)
+ write_char (str, &count, max_len, zerofill);
+ while (*p)
+ write_char (str, &count, max_len, *p++);
+ if (rightfill)
+ while (fill--)
+ write_char (str, &count, max_len, zerofill);
+ }
+ break;
+
+ case 'c':
+ write_char (str, &count, max_len,curarg & 0xff);
+ break;
+
+ case 'C':
+ {
+ grub_uint32_t code = curarg;
+ 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 <= 0x10ffff)
+ {
+ shift = 18;
+ mask = 0xf0;
+ }
+ else
+ {
+ code = '?';
+ shift = 0;
+ mask = 0;
+ }
+
+ write_char (str, &count, max_len,mask | (code >> shift));
+
+ for (shift -= 6; shift >= 0; shift -= 6)
+ write_char (str, &count, max_len,0x80 | (0x3f & (code >> shift)));
+ }
+ break;
+
+ case 's':
+ {
+ grub_size_t len = 0;
+ grub_size_t fill;
+ const char *p = ((char *) (grub_addr_t) curarg) ? : "(null)";
+ grub_size_t i;
+
+ while (len < format2 && p[len])
+ len++;
+
+ fill = len < format1 ? format1 - len : 0;
+
+ if (!rightfill)
+ while (fill--)
+ write_char (str, &count, max_len, zerofill);
+
+ for (i = 0; i < len; i++)
+ write_char (str, &count, max_len,*p++);
+
+ if (rightfill)
+ while (fill--)
+ write_char (str, &count, max_len, zerofill);
+ }
+
+ break;
+
+ default:
+ write_char (str, &count, max_len,c);
+ break;
+ }
+ }
+
+ if (count < max_len)
+ str[count] = '\0';
+ else
+ str[max_len] = '\0';
+ return count;
+}
+
+int
+grub_vsnprintf (char *str, grub_size_t n, const char *fmt, va_list ap)
+{
+ grub_size_t ret;
+ struct printf_args args;
+
+ if (!n)
+ return 0;
+
+ n--;
+
+ parse_printf_args (fmt, &args, ap);
+
+ ret = grub_vsnprintf_real (str, n, fmt, &args);
+
+ free_printf_args (&args);
+
+ 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;
+ struct printf_args args;
+
+ parse_printf_args (fmt, &args, ap);
+
+ while (1)
+ {
+ ret = grub_malloc (as + 1);
+ if (!ret)
+ {
+ free_printf_args (&args);
+ return NULL;
+ }
+
+ s = grub_vsnprintf_real (ret, as, fmt, &args);
+
+ if (s <= as)
+ {
+ free_printf_args (&args);
+ 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;
+}
+
+grub_err_t
+grub_printf_fmt_check (const char *fmt, const char *fmt_expected)
+{
+ struct printf_args args_expected, args_fmt;
+ grub_err_t ret;
+ grub_size_t n;
+
+ if (fmt == NULL || fmt_expected == NULL)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid format");
+
+ ret = parse_printf_arg_fmt (fmt_expected, &args_expected, 1, GRUB_SIZE_MAX);
+ if (ret != GRUB_ERR_NONE)
+ return ret;
+
+ /* Limit parsing to the number of expected arguments. */
+ ret = parse_printf_arg_fmt (fmt, &args_fmt, 1, args_expected.count);
+ if (ret != GRUB_ERR_NONE)
+ {
+ free_printf_args (&args_expected);
+ return ret;
+ }
+
+ for (n = 0; n < args_fmt.count; n++)
+ if (args_fmt.ptr[n].type != args_expected.ptr[n].type)
+ {
+ ret = grub_error (GRUB_ERR_BAD_ARGUMENT, "arguments types do not match");
+ break;
+ }
+
+ free_printf_args (&args_expected);
+ free_printf_args (&args_fmt);
+
+ return ret;
+}
+
+
+/* Abort GRUB. This function does not return. */
+static void __attribute__ ((noreturn))
+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 ();
+}
+
+void
+grub_fatal (const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start (ap, fmt);
+ grub_vprintf (_(fmt), ap);
+ va_end (ap);
+
+ grub_refresh ();
+
+ grub_abort ();
+}
+
+#if BOOT_TIME_STATS
+
+#include <grub/time.h>
+
+struct grub_boot_time *grub_boot_time_head;
+static struct grub_boot_time **boot_time_last = &grub_boot_time_head;
+
+void
+grub_real_boot_time (const char *file,
+ const int line,
+ const char *fmt, ...)
+{
+ struct grub_boot_time *n;
+ va_list args;
+
+ grub_error_push ();
+ n = grub_malloc (sizeof (*n));
+ if (!n)
+ {
+ grub_errno = 0;
+ grub_error_pop ();
+ return;
+ }
+ n->file = file;
+ n->line = line;
+ n->tp = grub_get_time_ms ();
+ n->next = 0;
+
+ va_start (args, fmt);
+ n->msg = grub_xvasprintf (fmt, args);
+ va_end (args);
+
+ *boot_time_last = n;
+ boot_time_last = &n->next;
+
+ grub_errno = 0;
+ grub_error_pop ();
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-05 00:07:54 +0000