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Commit 814d040e 814d040e0eb3a82d3bad476c8cd846a01f610f0a by Sergey Poznyakoff
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Added to the repository by gnulib-sync

1 parent 48442c8f
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1 /* Safe automatic memory allocation.
2 Copyright (C) 2003 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2003.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18
19 #ifdef HAVE_CONFIG_H
20 # include <config.h>
21 #endif
22
23 /* Specification. */
24 #include "allocsa.h"
25
26 /* The speed critical point in this file is freesa() applied to an alloca()
27 result: it must be fast, to match the speed of alloca(). The speed of
28 mallocsa() and freesa() in the other case are not critical, because they
29 are only invoked for big memory sizes. */
30
31 #if HAVE_ALLOCA
32
33 /* Store the mallocsa() results in a hash table. This is needed to reliably
34 distinguish a mallocsa() result and an alloca() result.
35
36 Although it is possible that the same pointer is returned by alloca() and
37 by mallocsa() at different times in the same application, it does not lead
38 to a bug in freesa(), because:
39 - Before a pointer returned by alloca() can point into malloc()ed memory,
40 the function must return, and once this has happened the programmer must
41 not call freesa() on it anyway.
42 - Before a pointer returned by mallocsa() can point into the stack, it
43 must be freed. The only function that can free it is freesa(), and
44 when freesa() frees it, it also removes it from the hash table. */
45
46 #define MAGIC_NUMBER 0x1415fb4a
47 #define MAGIC_SIZE sizeof (int)
48 /* This is how the header info would look like without any alignment
49 considerations. */
50 struct preliminary_header { void *next; char room[MAGIC_SIZE]; };
51 /* But the header's size must be a multiple of sa_alignment_max. */
52 #define HEADER_SIZE \
53 (((sizeof (struct preliminary_header) + sa_alignment_max - 1) / sa_alignment_max) * sa_alignment_max)
54 struct header { void *next; char room[HEADER_SIZE - sizeof (struct preliminary_header) + MAGIC_SIZE]; };
55 /* Verify that HEADER_SIZE == sizeof (struct header). */
56 typedef int verify1[2 * (HEADER_SIZE == sizeof (struct header)) - 1];
57 /* We make the hash table quite big, so that during lookups the probability
58 of empty hash buckets is quite high. There is no need to make the hash
59 table resizable, because when the hash table gets filled so much that the
60 lookup becomes slow, it means that the application has memory leaks. */
61 #define HASH_TABLE_SIZE 257
62 static void * mallocsa_results[HASH_TABLE_SIZE];
63
64 #endif
65
66 void *
67 mallocsa (size_t n)
68 {
69 #if HAVE_ALLOCA
70 /* Allocate one more word, that serves as an indicator for malloc()ed
71 memory, so that freesa() of an alloca() result is fast. */
72 size_t nplus = n + HEADER_SIZE;
73
74 if (nplus >= n)
75 {
76 char *p = (char *) malloc (nplus);
77
78 if (p != NULL)
79 {
80 size_t slot;
81
82 p += HEADER_SIZE;
83
84 /* Put a magic number into the indicator word. */
85 ((int *) p)[-1] = MAGIC_NUMBER;
86
87 /* Enter p into the hash table. */
88 slot = (unsigned long) p % HASH_TABLE_SIZE;
89 ((struct header *) (p - HEADER_SIZE))->next = mallocsa_results[slot];
90 mallocsa_results[slot] = p;
91
92 return p;
93 }
94 }
95 /* Out of memory. */
96 return NULL;
97 #else
98 # if !MALLOC_0_IS_NONNULL
99 if (n == 0)
100 n = 1;
101 # endif
102 return malloc (n);
103 #endif
104 }
105
106 #if HAVE_ALLOCA
107 void
108 freesa (void *p)
109 {
110 /* mallocsa() may have returned NULL. */
111 if (p != NULL)
112 {
113 /* Attempt to quickly distinguish the mallocsa() result - which has
114 a magic indicator word - and the alloca() result - which has an
115 uninitialized indicator word. It is for this test that sa_increment
116 additional bytes are allocated in the alloca() case. */
117 if (((int *) p)[-1] == MAGIC_NUMBER)
118 {
119 /* Looks like a mallocsa() result. To see whether it really is one,
120 perform a lookup in the hash table. */
121 size_t slot = (unsigned long) p % HASH_TABLE_SIZE;
122 void **chain = &mallocsa_results[slot];
123 for (; *chain != NULL;)
124 {
125 if (*chain == p)
126 {
127 /* Found it. Remove it from the hash table and free it. */
128 char *p_begin = (char *) p - HEADER_SIZE;
129 *chain = ((struct header *) p_begin)->next;
130 free (p_begin);
131 return;
132 }
133 chain = &((struct header *) ((char *) *chain - HEADER_SIZE))->next;
134 }
135 }
136 /* At this point, we know it was not a mallocsa() result. */
137 }
138 }
139 #endif
1 /* Safe automatic memory allocation.
2 Copyright (C) 2003-2004 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2003.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18
19 #ifndef _ALLOCSA_H
20 #define _ALLOCSA_H
21
22 #include <alloca.h>
23 #include <stddef.h>
24 #include <stdlib.h>
25
26 /* safe_alloca(N) is equivalent to alloca(N) when it is safe to call
27 alloca(N); otherwise it returns NULL. It either returns N bytes of
28 memory allocated on the stack, that lasts until the function returns,
29 or NULL.
30 Use of safe_alloca should be avoided:
31 - inside arguments of function calls - undefined behaviour,
32 - in inline functions - the allocation may actually last until the
33 calling function returns.
34 */
35 #if HAVE_ALLOCA
36 /* The OS usually guarantees only one guard page at the bottom of the stack,
37 and a page size can be as small as 4096 bytes. So we cannot safely
38 allocate anything larger than 4096 bytes. Also care for the possibility
39 of a few compiler-allocated temporary stack slots.
40 This must be a macro, not an inline function. */
41 # define safe_alloca(N) ((N) < 4032 ? alloca (N) : NULL)
42 #else
43 # define safe_alloca(N) ((N), NULL)
44 #endif
45
46 /* allocsa(N) is a safe variant of alloca(N). It allocates N bytes of
47 memory allocated on the stack, that must be freed using freesa() before
48 the function returns. Upon failure, it returns NULL. */
49 #if HAVE_ALLOCA
50 # define allocsa(N) \
51 ((N) < 4032 - sa_increment \
52 ? (void *) ((char *) alloca ((N) + sa_increment) + sa_increment) \
53 : mallocsa (N))
54 #else
55 # define allocsa(N) \
56 mallocsa (N)
57 #endif
58 extern void * mallocsa (size_t n);
59
60 /* Free a block of memory allocated through allocsa(). */
61 #if HAVE_ALLOCA
62 extern void freesa (void *p);
63 #else
64 # define freesa free
65 #endif
66
67 /* Maybe we should also define a variant
68 nallocsa (size_t n, size_t s) - behaves like allocsa (n * s)
69 If this would be useful in your application. please speak up. */
70
71
72 /* ------------------- Auxiliary, non-public definitions ------------------- */
73
74 /* Determine the alignment of a type at compile time. */
75 #if defined __GNUC__
76 # define sa_alignof __alignof__
77 #elif defined __cplusplus
78 template <class type> struct sa_alignof_helper { char __slot1; type __slot2; };
79 # define sa_alignof(type) offsetof (sa_alignof_helper<type>, __slot2)
80 #elif defined __hpux
81 /* Work around a HP-UX 10.20 cc bug with enums constants defined as offsetof
82 values. */
83 # define sa_alignof(type) (sizeof (type) <= 4 ? 4 : 8)
84 #else
85 # define sa_alignof(type) offsetof (struct { char __slot1; type __slot2; }, __slot2)
86 #endif
87
88 enum
89 {
90 /* The desired alignment of memory allocations is the maximum alignment
91 among all elementary types. */
92 sa_alignment_long = sa_alignof (long),
93 sa_alignment_double = sa_alignof (double),
94 #ifdef HAVE_LONG_LONG
95 sa_alignment_longlong = sa_alignof (long long),
96 #endif
97 #ifdef HAVE_LONG_DOUBLE
98 sa_alignment_longdouble = sa_alignof (long double),
99 #endif
100 sa_alignment_max = ((sa_alignment_long - 1) | (sa_alignment_double - 1)
101 #ifdef HAVE_LONG_LONG
102 | (sa_alignment_longlong - 1)
103 #endif
104 #ifdef HAVE_LONG_DOUBLE
105 | (sa_alignment_longdouble - 1)
106 #endif
107 ) + 1,
108 /* The increment that guarantees room for a magic word must be >= sizeof (int)
109 and a multiple of sa_alignment_max. */
110 sa_increment = ((sizeof (int) + sa_alignment_max - 1) / sa_alignment_max) * sa_alignment_max
111 };
112
113 #endif /* _ALLOCSA_H */
1 # Suppress a valgrind message about use of uninitialized memory in freesa().
2 # This use is OK because it provides only a speedup.
3 {
4 freesa
5 Memcheck:Cond
6 fun:freesa
7 }
1 /* Error handler for noninteractive utilities
2 Copyright (C) 1990-1998, 2000-2003, 2004 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation,
17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18
19 /* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
20
21 #ifdef HAVE_CONFIG_H
22 # include <config.h>
23 #endif
24
25 #include "error.h"
26
27 #include <stdarg.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31
32 #if !_LIBC && ENABLE_NLS
33 # include "gettext.h"
34 #endif
35
36 #ifdef _LIBC
37 # include <wchar.h>
38 # define mbsrtowcs __mbsrtowcs
39 #endif
40
41 #if USE_UNLOCKED_IO
42 # include "unlocked-io.h"
43 #endif
44
45 #ifndef _
46 # define _(String) String
47 #endif
48
49 /* If NULL, error will flush stdout, then print on stderr the program
50 name, a colon and a space. Otherwise, error will call this
51 function without parameters instead. */
52 void (*error_print_progname) (void);
53
54 /* This variable is incremented each time `error' is called. */
55 unsigned int error_message_count;
56
57 #ifdef _LIBC
58 /* In the GNU C library, there is a predefined variable for this. */
59
60 # define program_name program_invocation_name
61 # include <errno.h>
62 # include <libio/libioP.h>
63
64 /* In GNU libc we want do not want to use the common name `error' directly.
65 Instead make it a weak alias. */
66 extern void __error (int status, int errnum, const char *message, ...)
67 __attribute__ ((__format__ (__printf__, 3, 4)));
68 extern void __error_at_line (int status, int errnum, const char *file_name,
69 unsigned int line_number, const char *message,
70 ...)
71 __attribute__ ((__format__ (__printf__, 5, 6)));;
72 # define error __error
73 # define error_at_line __error_at_line
74
75 # include <libio/iolibio.h>
76 # define fflush(s) INTUSE(_IO_fflush) (s)
77 # undef putc
78 # define putc(c, fp) INTUSE(_IO_putc) (c, fp)
79
80 # include <bits/libc-lock.h>
81
82 #else /* not _LIBC */
83
84 # if !HAVE_DECL_STRERROR_R && STRERROR_R_CHAR_P
85 # ifndef HAVE_DECL_STRERROR_R
86 "this configure-time declaration test was not run"
87 # endif
88 char *strerror_r ();
89 # endif
90
91 # ifndef SIZE_MAX
92 # define SIZE_MAX ((size_t) -1)
93 # endif
94
95 /* The calling program should define program_name and set it to the
96 name of the executing program. */
97 extern char *program_name;
98
99 # if HAVE_STRERROR_R || defined strerror_r
100 # define __strerror_r strerror_r
101 # endif
102 #endif /* not _LIBC */
103
104 static void
105 print_errno_message (int errnum)
106 {
107 char const *s = NULL;
108
109 #if defined HAVE_STRERROR_R || _LIBC
110 char errbuf[1024];
111 # if STRERROR_R_CHAR_P || _LIBC
112 s = __strerror_r (errnum, errbuf, sizeof errbuf);
113 # else
114 if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
115 s = errbuf;
116 # endif
117 #endif
118
119 #if !_LIBC
120 if (! s && ! (s = strerror (errnum)))
121 s = _("Unknown system error");
122 #endif
123
124 #if _LIBC
125 if (_IO_fwide (stderr, 0) > 0)
126 {
127 __fwprintf (stderr, L": %s", s);
128 return;
129 }
130 #endif
131
132 fprintf (stderr, ": %s", s);
133 }
134
135 static void
136 error_tail (int status, int errnum, const char *message, va_list args)
137 {
138 #if _LIBC
139 if (_IO_fwide (stderr, 0) > 0)
140 {
141 # define ALLOCA_LIMIT 2000
142 size_t len = strlen (message) + 1;
143 const wchar_t *wmessage = L"out of memory";
144 wchar_t *wbuf = (len < ALLOCA_LIMIT
145 ? alloca (len * sizeof *wbuf)
146 : len <= SIZE_MAX / sizeof *wbuf
147 ? malloc (len * sizeof *wbuf)
148 : NULL);
149
150 if (wbuf)
151 {
152 size_t res;
153 mbstate_t st;
154 const char *tmp = message;
155 memset (&st, '\0', sizeof (st));
156 res = mbsrtowcs (wbuf, &tmp, len, &st);
157 wmessage = res == (size_t) -1 ? L"???" : wbuf;
158 }
159
160 __vfwprintf (stderr, wmessage, args);
161 if (! (len < ALLOCA_LIMIT))
162 free (wbuf);
163 }
164 else
165 #endif
166 vfprintf (stderr, message, args);
167 va_end (args);
168
169 ++error_message_count;
170 if (errnum)
171 print_errno_message (errnum);
172 #if _LIBC
173 if (_IO_fwide (stderr, 0) > 0)
174 putwc (L'\n', stderr);
175 else
176 #endif
177 putc ('\n', stderr);
178 fflush (stderr);
179 if (status)
180 exit (status);
181 }
182
183
184 /* Print the program name and error message MESSAGE, which is a printf-style
185 format string with optional args.
186 If ERRNUM is nonzero, print its corresponding system error message.
187 Exit with status STATUS if it is nonzero. */
188 void
189 error (int status, int errnum, const char *message, ...)
190 {
191 va_list args;
192
193 #if defined _LIBC && defined __libc_ptf_call
194 /* We do not want this call to be cut short by a thread
195 cancellation. Therefore disable cancellation for now. */
196 int state = PTHREAD_CANCEL_ENABLE;
197 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
198 0);
199 #endif
200
201 fflush (stdout);
202 #ifdef _LIBC
203 _IO_flockfile (stderr);
204 #endif
205 if (error_print_progname)
206 (*error_print_progname) ();
207 else
208 {
209 #if _LIBC
210 if (_IO_fwide (stderr, 0) > 0)
211 __fwprintf (stderr, L"%s: ", program_name);
212 else
213 #endif
214 fprintf (stderr, "%s: ", program_name);
215 }
216
217 va_start (args, message);
218 error_tail (status, errnum, message, args);
219
220 #ifdef _LIBC
221 _IO_funlockfile (stderr);
222 # ifdef __libc_ptf_call
223 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
224 # endif
225 #endif
226 }
227
228 /* Sometimes we want to have at most one error per line. This
229 variable controls whether this mode is selected or not. */
230 int error_one_per_line;
231
232 void
233 error_at_line (int status, int errnum, const char *file_name,
234 unsigned int line_number, const char *message, ...)
235 {
236 va_list args;
237
238 if (error_one_per_line)
239 {
240 static const char *old_file_name;
241 static unsigned int old_line_number;
242
243 if (old_line_number == line_number
244 && (file_name == old_file_name
245 || strcmp (old_file_name, file_name) == 0))
246 /* Simply return and print nothing. */
247 return;
248
249 old_file_name = file_name;
250 old_line_number = line_number;
251 }
252
253 #if defined _LIBC && defined __libc_ptf_call
254 /* We do not want this call to be cut short by a thread
255 cancellation. Therefore disable cancellation for now. */
256 int state = PTHREAD_CANCEL_ENABLE;
257 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
258 0);
259 #endif
260
261 fflush (stdout);
262 #ifdef _LIBC
263 _IO_flockfile (stderr);
264 #endif
265 if (error_print_progname)
266 (*error_print_progname) ();
267 else
268 {
269 #if _LIBC
270 if (_IO_fwide (stderr, 0) > 0)
271 __fwprintf (stderr, L"%s: ", program_name);
272 else
273 #endif
274 fprintf (stderr, "%s:", program_name);
275 }
276
277 if (file_name != NULL)
278 {
279 #if _LIBC
280 if (_IO_fwide (stderr, 0) > 0)
281 __fwprintf (stderr, L"%s:%d: ", file_name, line_number);
282 else
283 #endif
284 fprintf (stderr, "%s:%d: ", file_name, line_number);
285 }
286
287 va_start (args, message);
288 error_tail (status, errnum, message, args);
289
290 #ifdef _LIBC
291 _IO_funlockfile (stderr);
292 # ifdef __libc_ptf_call
293 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
294 # endif
295 #endif
296 }
297
298 #ifdef _LIBC
299 /* Make the weak alias. */
300 # undef error
301 # undef error_at_line
302 weak_alias (__error, error)
303 weak_alias (__error_at_line, error_at_line)
304 #endif
1 /* exit() function.
2 Copyright (C) 1995, 2001 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #ifndef _EXIT_H
19 #define _EXIT_H
20
21 /* Get exit() declaration. */
22 #include <stdlib.h>
23
24 /* Some systems do not define EXIT_*, even with STDC_HEADERS. */
25 #ifndef EXIT_SUCCESS
26 # define EXIT_SUCCESS 0
27 #endif
28 #ifndef EXIT_FAILURE
29 # define EXIT_FAILURE 1
30 #endif
31
32 #endif /* _EXIT_H */
1 /* Failure exit status
2
3 Copyright (C) 2002, 2003 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; see the file COPYING.
17 If not, write to the Free Software Foundation,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20 #if HAVE_CONFIG_H
21 # include <config.h>
22 #endif
23
24 #include "exitfail.h"
25 #include "exit.h"
26
27 int volatile exit_failure = EXIT_FAILURE;
1 /* Failure exit status
2
3 Copyright (C) 2002 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; see the file COPYING.
17 If not, write to the Free Software Foundation,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20 extern int volatile exit_failure;
1 /* Copyright (C) 1991, 1992, 1993, 1996, 1997, 1998, 1999, 2001, 2002, 2003
2 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #ifndef _FNMATCH_H
19 # define _FNMATCH_H 1
20
21 # ifdef __cplusplus
22 extern "C" {
23 # endif
24
25 /* We #undef these before defining them because some losing systems
26 (HP-UX A.08.07 for example) define these in <unistd.h>. */
27 # undef FNM_PATHNAME
28 # undef FNM_NOESCAPE
29 # undef FNM_PERIOD
30
31 /* Bits set in the FLAGS argument to `fnmatch'. */
32 # define FNM_PATHNAME (1 << 0) /* No wildcard can ever match `/'. */
33 # define FNM_NOESCAPE (1 << 1) /* Backslashes don't quote special chars. */
34 # define FNM_PERIOD (1 << 2) /* Leading `.' is matched only explicitly. */
35
36 # if !defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _GNU_SOURCE
37 # define FNM_FILE_NAME FNM_PATHNAME /* Preferred GNU name. */
38 # define FNM_LEADING_DIR (1 << 3) /* Ignore `/...' after a match. */
39 # define FNM_CASEFOLD (1 << 4) /* Compare without regard to case. */
40 # define FNM_EXTMATCH (1 << 5) /* Use ksh-like extended matching. */
41 # endif
42
43 /* Value returned by `fnmatch' if STRING does not match PATTERN. */
44 # define FNM_NOMATCH 1
45
46 /* This value is returned if the implementation does not support
47 `fnmatch'. Since this is not the case here it will never be
48 returned but the conformance test suites still require the symbol
49 to be defined. */
50 # ifdef _XOPEN_SOURCE
51 # define FNM_NOSYS (-1)
52 # endif
53
54 /* Match NAME against the filename pattern PATTERN,
55 returning zero if it matches, FNM_NOMATCH if not. */
56 extern int fnmatch (const char *__pattern, const char *__name,
57 int __flags);
58
59 # ifdef __cplusplus
60 }
61 # endif
62
63 #endif /* fnmatch.h */
1 /* getpass.h -- Read a password of arbitrary length from /dev/tty or stdin.
2 Copyright (C) 2004 Free Software Foundation, Inc.
3 Contributed by Simon Josefsson <jas@extundo.com>, 2004.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18
19 #ifndef GETPASS_H
20 #define GETPASS_H
21
22 /* Get getpass declaration, if available. */
23 #include <unistd.h>
24
25 #if defined HAVE_DECL_GETPASS && !HAVE_DECL_GETPASS
26 /* Read a password of arbitrary length from /dev/tty or stdin. */
27 char *getpass (const char *prompt);
28
29 #endif
30
31 #endif /* GETPASS_H */
1 /* Setting environment variables.
2 Copyright (C) 2001-2004 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #if HAVE_SETENV || HAVE_UNSETENV
19
20 /* Get setenv(), unsetenv() declarations. */
21 # include <stdlib.h>
22
23 #endif
24
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28
29 #if !HAVE_SETENV
30
31 /* Set NAME to VALUE in the environment.
32 If REPLACE is nonzero, overwrite an existing value. */
33 extern int setenv (const char *name, const char *value, int replace);
34
35 #endif
36
37 #if HAVE_UNSETENV
38
39 # if VOID_UNSETENV
40 /* On some systems, unsetenv() returns void.
41 This is the case for FreeBSD 4.8, NetBSD 1.6, OpenBSD 3.4. */
42 # define unsetenv(name) ((unsetenv)(name), 0)
43 # endif
44
45 #else
46
47 /* Remove the variable NAME from the environment. */
48 extern int unsetenv (const char *name);
49
50 #endif
51
52 #ifdef __cplusplus
53 }
54 #endif
1 /* Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
2 Written by Bruno Haible <haible@clisp.cons.org>, 2001.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #ifndef _STDBOOL_H
19 #define _STDBOOL_H
20
21 /* ISO C 99 <stdbool.h> for platforms that lack it. */
22
23 /* Usage suggestions:
24
25 Programs that use <stdbool.h> should be aware of some limitations
26 and standards compliance issues.
27
28 Standards compliance:
29
30 - <stdbool.h> must be #included before 'bool', 'false', 'true'
31 can be used.
32
33 - You cannot assume that sizeof (bool) == 1.
34
35 - Programs should not undefine the macros bool, true, and false,
36 as C99 lists that as an "obsolescent feature".
37
38 Limitations of this substitute, when used in a C89 environment:
39
40 - <stdbool.h> must be #included before the '_Bool' type can be used.
41
42 - You cannot assume that _Bool is a typedef; it might be a macro.
43
44 - In C99, casts and automatic conversions to '_Bool' or 'bool' are
45 performed in such a way that every nonzero value gets converted
46 to 'true', and zero gets converted to 'false'. This doesn't work
47 with this substitute. With this substitute, only the values 0 and 1
48 give the expected result when converted to _Bool' or 'bool'.
49
50 Also, it is suggested that programs use 'bool' rather than '_Bool';
51 this isn't required, but 'bool' is more common. */
52
53
54 /* 7.16. Boolean type and values */
55
56 /* BeOS <sys/socket.h> already #defines false 0, true 1. We use the same
57 definitions below, but temporarily we have to #undef them. */
58 #ifdef __BEOS__
59 # include <OS.h> /* defines bool but not _Bool */
60 # undef false
61 # undef true
62 #endif
63
64 /* For the sake of symbolic names in gdb, we define true and false as
65 enum constants, not only as macros.
66 It is tempting to write
67 typedef enum { false = 0, true = 1 } _Bool;
68 so that gdb prints values of type 'bool' symbolically. But if we do
69 this, values of type '_Bool' may promote to 'int' or 'unsigned int'
70 (see ISO C 99 6.7.2.2.(4)); however, '_Bool' must promote to 'int'
71 (see ISO C 99 6.3.1.1.(2)). So we add a negative value to the
72 enum; this ensures that '_Bool' promotes to 'int'. */
73 #if !(defined __cplusplus || defined __BEOS__)
74 # if !@HAVE__BOOL@
75 # if defined __SUNPRO_C && (__SUNPRO_C < 0x550 || __STDC__ == 1)
76 /* Avoid stupid "warning: _Bool is a keyword in ISO C99". */
77 # define _Bool signed char
78 enum { false = 0, true = 1 };
79 # else
80 typedef enum { _Bool_must_promote_to_int = -1, false = 0, true = 1 } _Bool;
81 # endif
82 # endif
83 #else
84 typedef bool _Bool;
85 #endif
86 #define bool _Bool
87
88 /* The other macros must be usable in preprocessor directives. */
89 #define false 0
90 #define true 1
91 #define __bool_true_false_are_defined 1
92
93 #endif /* _STDBOOL_H */
1 /* Copyright (C) 1992,1995-1999,2000-2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #if HAVE_CONFIG_H
19 # include <config.h>
20 #endif
21
22 #include <errno.h>
23 #if !_LIBC
24 # if !defined errno && !defined HAVE_ERRNO_DECL
25 extern int errno;
26 # endif
27 # define __set_errno(ev) ((errno) = (ev))
28 #endif
29
30 #include <stdlib.h>
31 #include <string.h>
32 #if _LIBC || HAVE_UNISTD_H
33 # include <unistd.h>
34 #endif
35
36 #if !_LIBC
37 # define __environ environ
38 # ifndef HAVE_ENVIRON_DECL
39 extern char **environ;
40 # endif
41 #endif
42
43 #if _LIBC
44 /* This lock protects against simultaneous modifications of `environ'. */
45 # include <bits/libc-lock.h>
46 __libc_lock_define_initialized (static, envlock)
47 # define LOCK __libc_lock_lock (envlock)
48 # define UNLOCK __libc_lock_unlock (envlock)
49 #else
50 # define LOCK
51 # define UNLOCK
52 #endif
53
54 /* In the GNU C library we must keep the namespace clean. */
55 #ifdef _LIBC
56 # define unsetenv __unsetenv
57 #endif
58
59
60 int
61 unsetenv (const char *name)
62 {
63 size_t len;
64 char **ep;
65
66 if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
67 {
68 __set_errno (EINVAL);
69 return -1;
70 }
71
72 len = strlen (name);
73
74 LOCK;
75
76 ep = __environ;
77 while (*ep != NULL)
78 if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
79 {
80 /* Found it. Remove this pointer by moving later ones back. */
81 char **dp = ep;
82
83 do
84 dp[0] = dp[1];
85 while (*dp++);
86 /* Continue the loop in case NAME appears again. */
87 }
88 else
89 ++ep;
90
91 UNLOCK;
92
93 return 0;
94 }
95
96 #ifdef _LIBC
97 # undef unsetenv
98 weak_alias (__unsetenv, unsetenv)
99 #endif
1 /* vsprintf with automatic memory allocation.
2 Copyright (C) 2002-2003 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #ifndef _VASPRINTF_H
19 #define _VASPRINTF_H
20
21 #if HAVE_VASPRINTF
22
23 /* Get asprintf(), vasprintf() declarations. */
24 #include <stdio.h>
25
26 #else
27
28 /* Get va_list. */
29 #include <stdarg.h>
30
31 #ifndef __attribute__
32 /* This feature is available in gcc versions 2.5 and later. */
33 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
34 # define __attribute__(Spec) /* empty */
35 # endif
36 /* The __-protected variants of `format' and `printf' attributes
37 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
38 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
39 # define __format__ format
40 # define __printf__ printf
41 # endif
42 #endif
43
44 #ifdef __cplusplus
45 extern "C" {
46 #endif
47
48 /* Write formatted output to a string dynamically allocated with malloc().
49 If the memory allocation succeeds, store the address of the string in
50 *RESULT and return the number of resulting bytes, excluding the trailing
51 NUL. Upon memory allocation error, or some other error, return -1. */
52 extern int asprintf (char **result, const char *format, ...)
53 __attribute__ ((__format__ (__printf__, 2, 3)));
54 extern int vasprintf (char **result, const char *format, va_list args)
55 __attribute__ ((__format__ (__printf__, 2, 0)));
56
57 #ifdef __cplusplus
58 }
59 #endif
60
61 #endif
62
63 #endif /* _VASPRINTF_H */
1 /* xsize.h -- Checked size_t computations.
2
3 Copyright (C) 2003 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18
19 #ifndef _XSIZE_H
20 #define _XSIZE_H
21
22 /* Get size_t. */
23 #include <stddef.h>
24
25 /* Get SIZE_MAX. */
26 #include <limits.h>
27 #if HAVE_STDINT_H
28 # include <stdint.h>
29 #endif
30
31 /* The size of memory objects is often computed through expressions of
32 type size_t. Example:
33 void* p = malloc (header_size + n * element_size).
34 These computations can lead to overflow. When this happens, malloc()
35 returns a piece of memory that is way too small, and the program then
36 crashes while attempting to fill the memory.
37 To avoid this, the functions and macros in this file check for overflow.
38 The convention is that SIZE_MAX represents overflow.
39 malloc (SIZE_MAX) is not guaranteed to fail -- think of a malloc
40 implementation that uses mmap --, it's recommended to use size_overflow_p()
41 or size_in_bounds_p() before invoking malloc().
42 The example thus becomes:
43 size_t size = xsum (header_size, xtimes (n, element_size));
44 void *p = (size_in_bounds_p (size) ? malloc (size) : NULL);
45 */
46
47 /* Convert an arbitrary value >= 0 to type size_t. */
48 #define xcast_size_t(N) \
49 ((N) <= SIZE_MAX ? (size_t) (N) : SIZE_MAX)
50
51 /* Sum of two sizes, with overflow check. */
52 static inline size_t
53 #if __GNUC__ >= 3
54 __attribute__ ((__pure__))
55 #endif
56 xsum (size_t size1, size_t size2)
57 {
58 size_t sum = size1 + size2;
59 return (sum >= size1 ? sum : SIZE_MAX);
60 }
61
62 /* Sum of three sizes, with overflow check. */
63 static inline size_t
64 #if __GNUC__ >= 3
65 __attribute__ ((__pure__))
66 #endif
67 xsum3 (size_t size1, size_t size2, size_t size3)
68 {
69 return xsum (xsum (size1, size2), size3);
70 }
71
72 /* Sum of four sizes, with overflow check. */
73 static inline size_t
74 #if __GNUC__ >= 3
75 __attribute__ ((__pure__))
76 #endif
77 xsum4 (size_t size1, size_t size2, size_t size3, size_t size4)
78 {
79 return xsum (xsum (xsum (size1, size2), size3), size4);
80 }
81
82 /* Maximum of two sizes, with overflow check. */
83 static inline size_t
84 #if __GNUC__ >= 3
85 __attribute__ ((__pure__))
86 #endif
87 xmax (size_t size1, size_t size2)
88 {
89 /* No explicit check is needed here, because for any n:
90 max (SIZE_MAX, n) == SIZE_MAX and max (n, SIZE_MAX) == SIZE_MAX. */
91 return (size1 >= size2 ? size1 : size2);
92 }
93
94 /* Multiplication of a count with an element size, with overflow check.
95 The count must be >= 0 and the element size must be > 0.
96 This is a macro, not an inline function, so that it works correctly even
97 when N is of a wider tupe and N > SIZE_MAX. */
98 #define xtimes(N, ELSIZE) \
99 ((N) <= SIZE_MAX / (ELSIZE) ? (size_t) (N) * (ELSIZE) : SIZE_MAX)
100
101 /* Check for overflow. */
102 #define size_overflow_p(SIZE) \
103 ((SIZE) == SIZE_MAX)
104 /* Check against overflow. */
105 #define size_in_bounds_p(SIZE) \
106 ((SIZE) != SIZE_MAX)
107
108 #endif /* _XSIZE_H */