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-rw-r--r--gl/lib/fnmatch_loop.c573
1 files changed, 284 insertions, 289 deletions
diff --git a/gl/lib/fnmatch_loop.c b/gl/lib/fnmatch_loop.c
index 50064abd..ebd6af36 100644
--- a/gl/lib/fnmatch_loop.c
+++ b/gl/lib/fnmatch_loop.c
@@ -1,33 +1,47 @@
-/* Copyright (C) 1991-1993, 1996-2006, 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- This program 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, or (at your option)
- any later version.
+ The GNU C Library 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.
- This program is distributed in the hope that it will be useful,
+ The GNU C Library 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.
+ 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 this program; if not, see <https://www.gnu.org/licenses/>. */
+ You should have received a copy of the GNU General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifdef _LIBC
+# include <stdint.h>
+#endif
+
+struct STRUCT
+{
+ const CHAR *pattern;
+ const CHAR *string;
+ bool no_leading_period;
+};
/* Match STRING against the file name pattern PATTERN, returning zero if
it matches, nonzero if not. */
+static int FCT (const CHAR *pattern, const CHAR *string,
+ const CHAR *string_end, bool no_leading_period, int flags,
+ struct STRUCT *ends, size_t alloca_used);
static int EXT (INT opt, const CHAR *pattern, const CHAR *string,
- const CHAR *string_end, bool no_leading_period, int flags)
- internal_function;
-static const CHAR *END (const CHAR *patternp) internal_function;
+ const CHAR *string_end, bool no_leading_period, int flags,
+ size_t alloca_used);
+static const CHAR *END (const CHAR *patternp);
static int
-internal_function
FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
- bool no_leading_period, int flags)
+ bool no_leading_period, int flags, struct STRUCT *ends, size_t alloca_used)
{
- register const CHAR *p = pattern, *n = string;
- register UCHAR c;
+ const CHAR *p = pattern, *n = string;
+ UCHAR c;
#ifdef _LIBC
# if WIDE_CHAR_VERSION
const char *collseq = (const char *)
@@ -46,12 +60,10 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
switch (c)
{
case L_('?'):
- if (__builtin_expect (flags & FNM_EXTMATCH, 0) && *p == '(')
+ if (__glibc_unlikely (flags & FNM_EXTMATCH) && *p == '(')
{
- int res;
-
- res = EXT (c, p, n, string_end, no_leading_period,
- flags);
+ int res = EXT (c, p, n, string_end, no_leading_period,
+ flags, alloca_used);
if (res != -1)
return res;
}
@@ -78,15 +90,20 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
break;
case L_('*'):
- if (__builtin_expect (flags & FNM_EXTMATCH, 0) && *p == '(')
+ if (__glibc_unlikely (flags & FNM_EXTMATCH) && *p == '(')
{
- int res;
-
- res = EXT (c, p, n, string_end, no_leading_period,
- flags);
+ int res = EXT (c, p, n, string_end, no_leading_period,
+ flags, alloca_used);
if (res != -1)
return res;
}
+ else if (ends != NULL)
+ {
+ ends->pattern = p - 1;
+ ends->string = n;
+ ends->no_leading_period = no_leading_period;
+ return 0;
+ }
if (n != string_end && *n == L_('.') && no_leading_period)
return FNM_NOMATCH;
@@ -111,7 +128,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
/* There isn't another character; no match. */
return FNM_NOMATCH;
else if (*n == L_('/')
- && __builtin_expect (flags & FNM_FILE_NAME, 0))
+ && __glibc_unlikely (flags & FNM_FILE_NAME))
/* A slash does not match a wildcard under
FNM_FILE_NAME. */
return FNM_NOMATCH;
@@ -147,49 +164,61 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
else
{
const CHAR *endp;
+ struct STRUCT end;
+ end.pattern = NULL;
endp = MEMCHR (n, (flags & FNM_FILE_NAME) ? L_('/') : L_('\0'),
string_end - n);
if (endp == NULL)
endp = string_end;
if (c == L_('[')
- || (__builtin_expect (flags & FNM_EXTMATCH, 0) != 0
+ || (__glibc_unlikely (flags & FNM_EXTMATCH)
&& (c == L_('@') || c == L_('+') || c == L_('!'))
&& *p == L_('(')))
{
int flags2 = ((flags & FNM_FILE_NAME)
? flags : (flags & ~FNM_PERIOD));
- bool no_leading_period2 = no_leading_period;
- for (--p; n < endp; ++n, no_leading_period2 = false)
- if (FCT (p, n, string_end, no_leading_period2, flags2)
- == 0)
- return 0;
+ for (--p; n < endp; ++n, no_leading_period = false)
+ if (FCT (p, n, string_end, no_leading_period, flags2,
+ &end, alloca_used) == 0)
+ goto found;
}
else if (c == L_('/') && (flags & FNM_FILE_NAME))
{
while (n < string_end && *n != L_('/'))
++n;
if (n < string_end && *n == L_('/')
- && (FCT (p, n + 1, string_end, flags & FNM_PERIOD, flags)
- == 0))
+ && (FCT (p, n + 1, string_end, flags & FNM_PERIOD, flags,
+ NULL, alloca_used) == 0))
return 0;
}
else
{
int flags2 = ((flags & FNM_FILE_NAME)
? flags : (flags & ~FNM_PERIOD));
- int no_leading_period2 = no_leading_period;
if (c == L_('\\') && !(flags & FNM_NOESCAPE))
c = *p;
c = FOLD (c);
- for (--p; n < endp; ++n, no_leading_period2 = false)
+ for (--p; n < endp; ++n, no_leading_period = false)
if (FOLD ((UCHAR) *n) == c
- && (FCT (p, n, string_end, no_leading_period2, flags2)
- == 0))
- return 0;
+ && (FCT (p, n, string_end, no_leading_period, flags2,
+ &end, alloca_used) == 0))
+ {
+ found:
+ if (end.pattern == NULL)
+ return 0;
+ break;
+ }
+ if (end.pattern != NULL)
+ {
+ p = end.pattern;
+ n = end.string;
+ no_leading_period = end.no_leading_period;
+ continue;
+ }
}
}
@@ -201,7 +230,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
/* Nonzero if the sense of the character class is inverted. */
const CHAR *p_init = p;
const CHAR *n_init = n;
- register bool not;
+ bool not;
CHAR cold;
UCHAR fn;
@@ -227,8 +256,6 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
c = *p++;
for (;;)
{
- bool is_range = false;
-
if (!(flags & FNM_NOESCAPE) && c == L_('\\'))
{
if (*p == L_('\0'))
@@ -243,9 +270,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
/* Leave room for the null. */
CHAR str[CHAR_CLASS_MAX_LENGTH + 1];
size_t c1 = 0;
-#if defined _LIBC || WIDE_CHAR_SUPPORT
wctype_t wt;
-#endif
const CHAR *startp = p;
for (;;)
@@ -273,35 +298,19 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
}
str[c1] = L_('\0');
-#if defined _LIBC || WIDE_CHAR_SUPPORT
wt = IS_CHAR_CLASS (str);
if (wt == 0)
/* Invalid character class name. */
return FNM_NOMATCH;
-# if defined _LIBC && ! WIDE_CHAR_VERSION
+#if defined _LIBC && ! WIDE_CHAR_VERSION
/* The following code is glibc specific but does
there a good job in speeding up the code since
we can avoid the btowc() call. */
if (_ISCTYPE ((UCHAR) *n, wt))
goto matched;
-# else
- if (ISWCTYPE (BTOWC ((UCHAR) *n), wt))
- goto matched;
-# endif
#else
- if ((STREQ (str, L_("alnum")) && isalnum ((UCHAR) *n))
- || (STREQ (str, L_("alpha")) && isalpha ((UCHAR) *n))
- || (STREQ (str, L_("blank")) && isblank ((UCHAR) *n))
- || (STREQ (str, L_("cntrl")) && iscntrl ((UCHAR) *n))
- || (STREQ (str, L_("digit")) && isdigit ((UCHAR) *n))
- || (STREQ (str, L_("graph")) && isgraph ((UCHAR) *n))
- || (STREQ (str, L_("lower")) && islower ((UCHAR) *n))
- || (STREQ (str, L_("print")) && isprint ((UCHAR) *n))
- || (STREQ (str, L_("punct")) && ispunct ((UCHAR) *n))
- || (STREQ (str, L_("space")) && isspace ((UCHAR) *n))
- || (STREQ (str, L_("upper")) && isupper ((UCHAR) *n))
- || (STREQ (str, L_("xdigit")) && isxdigit ((UCHAR) *n)))
+ if (iswctype (BTOWC ((UCHAR) *n), wt))
goto matched;
#endif
c = *p++;
@@ -309,7 +318,12 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
#ifdef _LIBC
else if (c == L_('[') && *p == L_('='))
{
- UCHAR str[1];
+ /* It's important that STR be a scalar variable rather
+ than a one-element array, because GCC (at least 4.9.2
+ -O2 on x86-64) can be confused by the array and
+ diagnose a "used initialized" in a dead branch in the
+ findidx function. */
+ UCHAR str;
uint32_t nrules =
_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
const CHAR *startp = p;
@@ -321,7 +335,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
c = L_('[');
goto normal_bracket;
}
- str[0] = c;
+ str = c;
c = *++p;
if (c != L_('=') || p[1] != L_(']'))
@@ -334,7 +348,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
if (nrules == 0)
{
- if ((UCHAR) *n == str[0])
+ if ((UCHAR) *n == str)
goto matched;
}
else
@@ -342,28 +356,21 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
const int32_t *table;
# if WIDE_CHAR_VERSION
const int32_t *weights;
- const int32_t *extra;
+ const wint_t *extra;
# else
const unsigned char *weights;
const unsigned char *extra;
# endif
const int32_t *indirect;
int32_t idx;
- const UCHAR *cp = (const UCHAR *) str;
-
- /* This #include defines a local function! */
-# if WIDE_CHAR_VERSION
-# include <locale/weightwc.h>
-# else
-# include <locale/weight.h>
-# endif
+ const UCHAR *cp = (const UCHAR *) &str;
# if WIDE_CHAR_VERSION
table = (const int32_t *)
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEWC);
weights = (const int32_t *)
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTWC);
- extra = (const int32_t *)
+ extra = (const wint_t *)
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAWC);
indirect = (const int32_t *)
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTWC);
@@ -378,7 +385,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTMB);
# endif
- idx = findidx (&cp);
+ idx = FINDIDX (table, indirect, extra, &cp, 1);
if (idx != 0)
{
/* We found a table entry. Now see whether the
@@ -388,7 +395,8 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
int32_t idx2;
const UCHAR *np = (const UCHAR *) n;
- idx2 = findidx (&np);
+ idx2 = FINDIDX (table, indirect, extra,
+ &np, string_end - n);
if (idx2 != 0
&& (idx >> 24) == (idx2 >> 24)
&& len == weights[idx2 & 0xffffff])
@@ -422,6 +430,8 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
}
else
{
+ bool is_range = false;
+
#ifdef _LIBC
bool is_seqval = false;
@@ -468,25 +478,11 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
{
int32_t table_size;
const int32_t *symb_table;
-# ifdef WIDE_CHAR_VERSION
- char str[c1];
- size_t strcnt;
-# else
-# define str (startp + 1)
-# endif
const unsigned char *extra;
int32_t idx;
int32_t elem;
- int32_t second;
- int32_t hash;
-
-# ifdef WIDE_CHAR_VERSION
- /* We have to convert the name to a single-byte
- string. This is possible since the names
- consist of ASCII characters and the internal
- representation is UCS4. */
- for (strcnt = 0; strcnt < c1; ++strcnt)
- str[strcnt] = startp[1 + strcnt];
+# if WIDE_CHAR_VERSION
+ CHAR *wextra;
# endif
table_size =
@@ -499,81 +495,65 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
_NL_CURRENT (LC_COLLATE,
_NL_COLLATE_SYMB_EXTRAMB);
- /* Locate the character in the hashing table. */
- hash = elem_hash (str, c1);
-
- idx = 0;
- elem = hash % table_size;
- if (symb_table[2 * elem] != 0)
- {
- second = hash % (table_size - 2) + 1;
-
- do
- {
- /* First compare the hashing value. */
- if (symb_table[2 * elem] == hash
- && (c1
- == extra[symb_table[2 * elem + 1]])
- && memcmp (str,
- &extra[symb_table[2 * elem
- + 1]
- + 1], c1) == 0)
- {
- /* Yep, this is the entry. */
- idx = symb_table[2 * elem + 1];
- idx += 1 + extra[idx];
- break;
- }
-
- /* Next entry. */
- elem += second;
- }
- while (symb_table[2 * elem] != 0);
- }
+ for (elem = 0; elem < table_size; elem++)
+ if (symb_table[2 * elem] != 0)
+ {
+ idx = symb_table[2 * elem + 1];
+ /* Skip the name of collating element. */
+ idx += 1 + extra[idx];
+# if WIDE_CHAR_VERSION
+ /* Skip the byte sequence of the
+ collating element. */
+ idx += 1 + extra[idx];
+ /* Adjust for the alignment. */
+ idx = (idx + 3) & ~3;
+
+ wextra = (CHAR *) &extra[idx + 4];
+
+ if (/* Compare the length of the sequence. */
+ c1 == wextra[0]
+ /* Compare the wide char sequence. */
+ && (__wmemcmp (startp + 1, &wextra[1],
+ c1)
+ == 0))
+ /* Yep, this is the entry. */
+ break;
+# else
+ if (/* Compare the length of the sequence. */
+ c1 == extra[idx]
+ /* Compare the byte sequence. */
+ && memcmp (startp + 1,
+ &extra[idx + 1], c1) == 0)
+ /* Yep, this is the entry. */
+ break;
+# endif
+ }
- if (symb_table[2 * elem] != 0)
+ if (elem < table_size)
{
/* Compare the byte sequence but only if
this is not part of a range. */
-# ifdef WIDE_CHAR_VERSION
- int32_t *wextra;
+ if (! is_range
- idx += 1 + extra[idx];
- /* Adjust for the alignment. */
- idx = (idx + 3) & ~3;
-
- wextra = (int32_t *) &extra[idx + 4];
-# endif
-
- if (! is_range)
- {
-# ifdef WIDE_CHAR_VERSION
- for (c1 = 0;
- (int32_t) c1 < wextra[idx];
- ++c1)
- if (n[c1] != wextra[1 + c1])
- break;
-
- if ((int32_t) c1 == wextra[idx])
- goto matched;
+# if WIDE_CHAR_VERSION
+ && __wmemcmp (n, &wextra[1], c1) == 0
# else
- for (c1 = 0; c1 < extra[idx]; ++c1)
- if (n[c1] != extra[1 + c1])
- break;
-
- if (c1 == extra[idx])
- goto matched;
+ && memcmp (n, &extra[idx + 1], c1) == 0
# endif
+ )
+ {
+ n += c1 - 1;
+ goto matched;
}
/* Get the collation sequence value. */
is_seqval = true;
-# ifdef WIDE_CHAR_VERSION
+# if WIDE_CHAR_VERSION
cold = wextra[1 + wextra[idx]];
# else
- /* Adjust for the alignment. */
idx += 1 + extra[idx];
- idx = (idx + 3) & ~4;
+ /* Adjust for the alignment. */
+ idx = (idx + 3) & ~3;
cold = *((int32_t *) &extra[idx]);
# endif
@@ -583,10 +563,10 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
{
/* No valid character. Match it as a
single byte. */
- if (!is_range && *n == str[0])
+ if (!is_range && *n == startp[1])
goto matched;
- cold = str[0];
+ cold = startp[1];
c = *p++;
}
else
@@ -594,7 +574,6 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
}
}
else
-# undef str
#endif
{
c = FOLD (c);
@@ -614,7 +593,6 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
outside of is_seqval's scope. */
is_seqval = false;
#endif
-
cold = c;
c = *p++;
}
@@ -634,7 +612,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
uint32_t lcollseq;
UCHAR cend = *p++;
-# ifdef WIDE_CHAR_VERSION
+# if WIDE_CHAR_VERSION
/* Search in the 'names' array for the characters. */
fcollseq = __collseq_table_lookup (collseq, fn);
if (fcollseq == ~((uint32_t) 0))
@@ -689,25 +667,11 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
{
int32_t table_size;
const int32_t *symb_table;
-# ifdef WIDE_CHAR_VERSION
- char str[c1];
- size_t strcnt;
-# else
-# define str (startp + 1)
-# endif
const unsigned char *extra;
int32_t idx;
int32_t elem;
- int32_t second;
- int32_t hash;
-
-# ifdef WIDE_CHAR_VERSION
- /* We have to convert the name to a single-byte
- string. This is possible since the names
- consist of ASCII characters and the internal
- representation is UCS4. */
- for (strcnt = 0; strcnt < c1; ++strcnt)
- str[strcnt] = startp[1 + strcnt];
+# if WIDE_CHAR_VERSION
+ CHAR *wextra;
# endif
table_size =
@@ -720,71 +684,64 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
_NL_CURRENT (LC_COLLATE,
_NL_COLLATE_SYMB_EXTRAMB);
- /* Locate the character in the hashing
- table. */
- hash = elem_hash (str, c1);
-
- idx = 0;
- elem = hash % table_size;
- if (symb_table[2 * elem] != 0)
- {
- second = hash % (table_size - 2) + 1;
-
- do
- {
- /* First compare the hashing value. */
- if (symb_table[2 * elem] == hash
- && (c1
- == extra[symb_table[2 * elem + 1]])
- && memcmp (str,
- &extra[symb_table[2 * elem + 1]
- + 1], c1) == 0)
- {
- /* Yep, this is the entry. */
- idx = symb_table[2 * elem + 1];
- idx += 1 + extra[idx];
- break;
- }
-
- /* Next entry. */
- elem += second;
- }
- while (symb_table[2 * elem] != 0);
- }
+ for (elem = 0; elem < table_size; elem++)
+ if (symb_table[2 * elem] != 0)
+ {
+ idx = symb_table[2 * elem + 1];
+ /* Skip the name of collating
+ element. */
+ idx += 1 + extra[idx];
+# if WIDE_CHAR_VERSION
+ /* Skip the byte sequence of the
+ collating element. */
+ idx += 1 + extra[idx];
+ /* Adjust for the alignment. */
+ idx = (idx + 3) & ~3;
+
+ wextra = (CHAR *) &extra[idx + 4];
+
+ if (/* Compare the length of the
+ sequence. */
+ c1 == wextra[0]
+ /* Compare the wide char sequence. */
+ && (__wmemcmp (startp + 1,
+ &wextra[1], c1)
+ == 0))
+ /* Yep, this is the entry. */
+ break;
+# else
+ if (/* Compare the length of the
+ sequence. */
+ c1 == extra[idx]
+ /* Compare the byte sequence. */
+ && memcmp (startp + 1,
+ &extra[idx + 1], c1) == 0)
+ /* Yep, this is the entry. */
+ break;
+# endif
+ }
- if (symb_table[2 * elem] != 0)
+ if (elem < table_size)
{
- /* Compare the byte sequence but only if
- this is not part of a range. */
-# ifdef WIDE_CHAR_VERSION
- int32_t *wextra;
-
- idx += 1 + extra[idx];
- /* Adjust for the alignment. */
- idx = (idx + 3) & ~4;
-
- wextra = (int32_t *) &extra[idx + 4];
-# endif
/* Get the collation sequence value. */
is_seqval = true;
-# ifdef WIDE_CHAR_VERSION
+# if WIDE_CHAR_VERSION
cend = wextra[1 + wextra[idx]];
# else
- /* Adjust for the alignment. */
idx += 1 + extra[idx];
- idx = (idx + 3) & ~4;
+ /* Adjust for the alignment. */
+ idx = (idx + 3) & ~3;
cend = *((int32_t *) &extra[idx]);
# endif
}
- else if (symb_table[2 * elem] != 0 && c1 == 1)
+ else if (c1 == 1)
{
- cend = str[0];
+ cend = startp[1];
c = *p++;
}
else
return FNM_NOMATCH;
}
-# undef str
}
else
{
@@ -799,7 +756,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
characters which are not mentioned in the
collation specification. */
if (
-# ifdef WIDE_CHAR_VERSION
+# if WIDE_CHAR_VERSION
lcollseq == 0xffffffff ||
# endif
lcollseq <= fcollseq)
@@ -811,7 +768,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
hcollseq = cend;
else
{
-# ifdef WIDE_CHAR_VERSION
+# if WIDE_CHAR_VERSION
hcollseq =
__collseq_table_lookup (collseq, cend);
if (hcollseq == ~((uint32_t) 0))
@@ -832,7 +789,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
if (lcollseq <= hcollseq && fcollseq <= hcollseq)
goto matched;
}
-# ifdef WIDE_CHAR_VERSION
+# if WIDE_CHAR_VERSION
range_not_matched:
# endif
#else
@@ -848,7 +805,7 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
return FNM_NOMATCH;
/* It is a range. */
- if (cold <= fn && fn <= cend)
+ if ((UCHAR) cold <= fn && fn <= cend)
goto matched;
#endif
@@ -866,11 +823,8 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
matched:
/* Skip the rest of the [...] that already matched. */
- do
+ while ((c = *p++) != L_(']'))
{
- ignore_next:
- c = *p++;
-
if (c == L_('\0'))
/* [... (unterminated) loses. */
return FNM_NOMATCH;
@@ -898,12 +852,11 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
if (c < L_('a') || c >= L_('z'))
{
- p = startp;
- goto ignore_next;
+ p = startp - 2;
+ break;
}
}
p += 2;
- c = *p++;
}
else if (c == L_('[') && *p == L_('='))
{
@@ -914,25 +867,21 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
if (c != L_('=') || p[1] != L_(']'))
return FNM_NOMATCH;
p += 2;
- c = *p++;
}
else if (c == L_('[') && *p == L_('.'))
{
- ++p;
while (1)
{
c = *++p;
- if (c == '\0')
+ if (c == L_('\0'))
return FNM_NOMATCH;
- if (*p == L_('.') && p[1] == L_(']'))
+ if (c == L_('.') && p[1] == L_(']'))
break;
}
p += 2;
- c = *p++;
}
}
- while (c != L_(']'));
if (not)
return FNM_NOMATCH;
}
@@ -941,11 +890,10 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
case L_('+'):
case L_('@'):
case L_('!'):
- if (__builtin_expect (flags & FNM_EXTMATCH, 0) && *p == '(')
+ if (__glibc_unlikely (flags & FNM_EXTMATCH) && *p == '(')
{
- int res;
-
- res = EXT (c, p, n, string_end, no_leading_period, flags);
+ int res = EXT (c, p, n, string_end, no_leading_period, flags,
+ alloca_used);
if (res != -1)
return res;
}
@@ -983,7 +931,6 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
static const CHAR *
-internal_function
END (const CHAR *pattern)
{
const CHAR *p = pattern;
@@ -1013,7 +960,12 @@ END (const CHAR *pattern)
}
else if ((*p == L_('?') || *p == L_('*') || *p == L_('+') || *p == L_('@')
|| *p == L_('!')) && p[1] == L_('('))
- p = END (p + 1);
+ {
+ p = END (p + 1);
+ if (*p == L_('\0'))
+ /* This is an invalid pattern. */
+ return pattern;
+ }
else if (*p == L_(')'))
break;
@@ -1022,29 +974,33 @@ END (const CHAR *pattern)
static int
-internal_function
EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
- bool no_leading_period, int flags)
+ bool no_leading_period, int flags, size_t alloca_used)
{
const CHAR *startp;
size_t level;
struct patternlist
{
struct patternlist *next;
+ CHAR malloced;
CHAR str[FLEXIBLE_ARRAY_MEMBER];
} *list = NULL;
struct patternlist **lastp = &list;
size_t pattern_len = STRLEN (pattern);
+ bool any_malloced = false;
const CHAR *p;
const CHAR *rs;
- enum { ALLOCA_LIMIT = 8000 };
+ int retval = 0;
/* Parse the pattern. Store the individual parts in the list. */
level = 0;
for (startp = p = pattern + 1; ; ++p)
if (*p == L_('\0'))
- /* This is an invalid pattern. */
- return -1;
+ {
+ /* This is an invalid pattern. */
+ retval = -1;
+ goto out;
+ }
else if (*p == L_('['))
{
/* Handle brackets special. */
@@ -1061,8 +1017,11 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
/* Skip over all characters of the list. */
while (*p != L_(']'))
if (*p++ == L_('\0'))
- /* This is no valid pattern. */
- return -1;
+ {
+ /* This is no valid pattern. */
+ retval = -1;
+ goto out;
+ }
}
else if ((*p == L_('?') || *p == L_('*') || *p == L_('+') || *p == L_('@')
|| *p == L_('!')) && p[1] == L_('('))
@@ -1075,22 +1034,34 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
/* This means we found the end of the pattern. */
#define NEW_PATTERN \
struct patternlist *newp; \
- size_t plen; \
- size_t plensize; \
- size_t newpsize; \
- \
- plen = (opt == L_('?') || opt == L_('@') \
- ? pattern_len \
- : p - startp + 1UL); \
- plensize = plen * sizeof (CHAR); \
- newpsize = FLEXSIZEOF (struct patternlist, str, plensize); \
- if ((size_t) -1 / sizeof (CHAR) < plen \
- || newpsize < offsetof (struct patternlist, str) \
- || ALLOCA_LIMIT <= newpsize) \
- return -1; \
- newp = (struct patternlist *) alloca (newpsize); \
- *((CHAR *) MEMPCPY (newp->str, startp, p - startp)) = L_('\0'); \
+ size_t plen = (opt == L_('?') || opt == L_('@') \
+ ? pattern_len : (p - startp + 1UL)); \
+ ptrdiff_t slen = FLEXSIZEOF (struct patternlist, str, 0); \
+ ptrdiff_t new_used = alloca_used + slen; \
+ ptrdiff_t plensize; \
+ if (INT_MULTIPLY_WRAPV (plen, sizeof (CHAR), &plensize) \
+ || INT_ADD_WRAPV (new_used, plensize, &new_used)) \
+ { \
+ retval = -2; \
+ goto out; \
+ } \
+ slen += plensize; \
+ bool malloced = ! __libc_use_alloca (new_used); \
+ if (__glibc_unlikely (malloced)) \
+ { \
+ newp = malloc (slen); \
+ if (newp == NULL) \
+ { \
+ retval = -2; \
+ goto out; \
+ } \
+ any_malloced = true; \
+ } \
+ else \
+ newp = alloca_account (slen, alloca_used); \
newp->next = NULL; \
+ newp->malloced = malloced; \
+ *((CHAR *) MEMPCPY (newp->str, startp, p - startp)) = L_('\0'); \
*lastp = newp; \
lastp = &newp->next
NEW_PATTERN;
@@ -1112,8 +1083,9 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
switch (opt)
{
case L_('*'):
- if (FCT (p, string, string_end, no_leading_period, flags) == 0)
- return 0;
+ if (FCT (p, string, string_end, no_leading_period, flags, NULL,
+ alloca_used) == 0)
+ goto success;
FALLTHROUGH;
case L_('+'):
do
@@ -1122,7 +1094,8 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
/* First match the prefix with the current pattern with the
current pattern. */
if (FCT (list->str, string, rs, no_leading_period,
- flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD) == 0
+ flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
+ NULL, alloca_used) == 0
/* This was successful. Now match the rest with the rest
of the pattern. */
&& (FCT (p, rs, string_end,
@@ -1130,7 +1103,7 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
? no_leading_period
: rs[-1] == '/' && NO_LEADING_PERIOD (flags),
flags & FNM_FILE_NAME
- ? flags : flags & ~FNM_PERIOD) == 0
+ ? flags : flags & ~FNM_PERIOD, NULL, alloca_used) == 0
/* This didn't work. Try the whole pattern. */
|| (rs != string
&& FCT (pattern - 1, rs, string_end,
@@ -1138,18 +1111,21 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
? no_leading_period
: rs[-1] == '/' && NO_LEADING_PERIOD (flags),
flags & FNM_FILE_NAME
- ? flags : flags & ~FNM_PERIOD) == 0)))
+ ? flags : flags & ~FNM_PERIOD, NULL,
+ alloca_used) == 0)))
/* It worked. Signal success. */
- return 0;
+ goto success;
}
while ((list = list->next) != NULL);
/* None of the patterns lead to a match. */
- return FNM_NOMATCH;
+ retval = FNM_NOMATCH;
+ break;
case L_('?'):
- if (FCT (p, string, string_end, no_leading_period, flags) == 0)
- return 0;
+ if (FCT (p, string, string_end, no_leading_period, flags, NULL,
+ alloca_used) == 0)
+ goto success;
FALLTHROUGH;
case L_('@'):
do
@@ -1159,13 +1135,15 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
pattern list. */
if (FCT (STRCAT (list->str, p), string, string_end,
no_leading_period,
- flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD) == 0)
+ flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
+ NULL, alloca_used) == 0)
/* It worked. Signal success. */
- return 0;
+ goto success;
while ((list = list->next) != NULL);
/* None of the patterns lead to a match. */
- return FNM_NOMATCH;
+ retval = FNM_NOMATCH;
+ break;
case L_('!'):
for (rs = string; rs <= string_end; ++rs)
@@ -1174,7 +1152,8 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
for (runp = list; runp != NULL; runp = runp->next)
if (FCT (runp->str, string, rs, no_leading_period,
- flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD) == 0)
+ flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
+ NULL, alloca_used) == 0)
break;
/* If none of the patterns matched see whether the rest does. */
@@ -1183,22 +1162,35 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
rs == string
? no_leading_period
: rs[-1] == '/' && NO_LEADING_PERIOD (flags),
- flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD)
- == 0))
+ flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
+ NULL, alloca_used) == 0))
/* This is successful. */
- return 0;
+ goto success;
}
/* None of the patterns together with the rest of the pattern
lead to a match. */
- return FNM_NOMATCH;
+ retval = FNM_NOMATCH;
+ break;
default:
assert (! "Invalid extended matching operator");
+ retval = -1;
break;
}
- return -1;
+ success:
+ out:
+ if (any_malloced)
+ while (list != NULL)
+ {
+ struct patternlist *old = list;
+ list = list->next;
+ if (old->malloced)
+ free (old);
+ }
+
+ return retval;
}
@@ -1209,9 +1201,12 @@ EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
#undef FCT
#undef EXT
#undef END
+#undef STRUCT
#undef MEMPCPY
#undef MEMCHR
#undef STRLEN
#undef STRCAT
#undef L_
#undef BTOWC
+#undef WIDE_CHAR_VERSION
+#undef FINDIDX
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 04:18:11 +0000