[thirdparty/bash.git] / general.h

/* general.h -- defines that everybody likes to use. */

/* Copyright (C) 1993-2016 Free Software Foundation, Inc.

   This file is part of GNU Bash, the Bourne Again SHell.

   Bash 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.

   Bash 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 Bash.  If not, see <http://www.gnu.org/licenses/>.
*/

#if !defined (_GENERAL_H_)
#define _GENERAL_H_

#include "stdc.h"

#include "bashtypes.h"
#include "chartypes.h"

#if defined (HAVE_SYS_RESOURCE_H) && defined (RLIMTYPE)
#  if defined (HAVE_SYS_TIME_H)
#    include <sys/time.h>
#  endif
#  include <sys/resource.h>
#endif

#if defined (HAVE_STRING_H)
#  include <string.h>
#else
#  include <strings.h>
#endif /* !HAVE_STRING_H */

#if defined (HAVE_LIMITS_H)
#  include <limits.h>
#endif

#include "xmalloc.h"

/* NULL pointer type. */
#if !defined (NULL)
#  if defined (__STDC__)
#    define NULL ((void *) 0)
#  else
#    define NULL 0x0
#  endif /* !__STDC__ */
#endif /* !NULL */

/* Hardly used anymore */
#define pointer_to_int(x)	(int)((char *)x - (char *)0)

#if defined (alpha) && defined (__GNUC__) && !defined (strchr) && !defined (__STDC__)
extern char *strchr (), *strrchr ();
#endif

#if !defined (strcpy) && (defined (HAVE_DECL_STRCPY) && !HAVE_DECL_STRCPY)
extern char *strcpy __P((char *, const char *));
#endif

#if !defined (savestring)
#  define savestring(x) (char *)strcpy (xmalloc (1 + strlen (x)), (x))
#endif

#ifndef member
#  define member(c, s) ((c) ? ((char *)mbschr ((s), (c)) != (char *)NULL) : 0)
#endif

#ifndef whitespace
#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
#endif

#ifndef CHAR_MAX
#  ifdef __CHAR_UNSIGNED__
#    define CHAR_MAX	0xff
#  else
#    define CHAR_MAX	0x7f
#  endif
#endif

#ifndef CHAR_BIT
#  define CHAR_BIT 8
#endif

/* Nonzero if the integer type T is signed.  */
#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))

/* The width in bits of the integer type or expression T.
   Padding bits are not supported; this is checked at compile-time below.  */
#define TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT)

/* Bound on length of the string representing an unsigned integer
   value representable in B bits.  log10 (2.0) < 146/485.  The
      smallest value of B where this bound is not tight is 2621.  */
#define INT_BITS_STRLEN_BOUND(b) (((b) * 146 + 484) / 485)

/* Bound on length of the string representing an integer value of type T.
   Subtract one for the sign bit if T is signed;
   302 / 1000 is log10 (2) rounded up;
   add one for integer division truncation;
   add one more for a minus sign if t is signed.  */
#define INT_STRLEN_BOUND(t) \
  ((TYPE_WIDTH (t) - TYPE_SIGNED (t)) * 302 / 1000 \
   + 1 + TYPE_SIGNED (t))

/* Updated version adapted from gnulib/intprops.h, not used right now.
   Changes the approximation of log10(2) from 302/1000 to 146/485. */
#if 0
#define INT_STRLEN_BOUND(t) \
  (INT_BITS_STRLEN_BOUND (TYPE_WIDTH (t) - TYPE_SIGNED (t)) + TYPE_SIGNED(t))
#endif

/* Bound on buffer size needed to represent an integer type or expression T,
   including the terminating null.  */
#define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1)

/* Define exactly what a legal shell identifier consists of. */
#define legal_variable_starter(c) (ISALPHA(c) || (c == '_'))
#define legal_variable_char(c)	(ISALNUM(c) || c == '_')

/* Definitions used in subst.c and by the `read' builtin for field
   splitting. */
#define spctabnl(c)	((c) == ' ' || (c) == '\t' || (c) == '\n')

/* All structs which contain a `next' field should have that field
   as the first field in the struct.  This means that functions
   can be written to handle the general case for linked lists. */
typedef struct g_list {
  struct g_list *next;
} GENERIC_LIST;

/* Here is a generic structure for associating character strings
   with integers.  It is used in the parser for shell tokenization. */
typedef struct {
  char *word;
  int token;
} STRING_INT_ALIST;

/* A macro to avoid making an unnecessary function call. */
#define REVERSE_LIST(list, type) \
  ((list && list->next) ? (type)list_reverse ((GENERIC_LIST *)list) \
			: (type)(list))

#if __GNUC__ > 1
#  define FASTCOPY(s, d, n)  __builtin_memcpy ((d), (s), (n))
#else /* !__GNUC__ */
#  if !defined (HAVE_BCOPY)
#    if !defined (HAVE_MEMMOVE)
#      define FASTCOPY(s, d, n)  memcpy ((d), (s), (n))
#    else
#      define FASTCOPY(s, d, n)  memmove ((d), (s), (n))
#    endif /* !HAVE_MEMMOVE */
#  else /* HAVE_BCOPY */
#    define FASTCOPY(s, d, n)  bcopy ((s), (d), (n))
#  endif /* HAVE_BCOPY */
#endif /* !__GNUC__ */

/* String comparisons that possibly save a function call each. */
#define STREQ(a, b) ((a)[0] == (b)[0] && strcmp(a, b) == 0)
#define STREQN(a, b, n) ((n == 0) ? (1) \
				  : ((a)[0] == (b)[0] && strncmp(a, b, n) == 0))

/* More convenience definitions that possibly save system or libc calls. */
#define STRLEN(s) (((s) && (s)[0]) ? ((s)[1] ? ((s)[2] ? strlen(s) : 2) : 1) : 0)
#define FREE(s)  do { if (s) free (s); } while (0)
#define MEMBER(c, s) (((c) && c == (s)[0] && !(s)[1]) || (member(c, s)))

/* A fairly hairy macro to check whether an allocated string has more room,
   and to resize it using xrealloc if it does not.
   STR is the string (char *)
   CIND is the current index into the string (int)
   ROOM is the amount of additional room we need in the string (int)
   CSIZE is the currently-allocated size of STR (int)
   SINCR is how much to increment CSIZE before calling xrealloc (int) */

#define RESIZE_MALLOCED_BUFFER(str, cind, room, csize, sincr) \
  do { \
    if ((cind) + (room) >= csize) \
      { \
	while ((cind) + (room) >= csize) \
	  csize += (sincr); \
	str = xrealloc (str, csize); \
      } \
  } while (0)

/* Function pointers can be declared as (Function *)foo. */
#if !defined (_FUNCTION_DEF)
#  define _FUNCTION_DEF
typedef int Function ();
typedef void VFunction ();
typedef char *CPFunction ();		/* no longer used */
typedef char **CPPFunction ();		/* no longer used */
#endif /* _FUNCTION_DEF */

#ifndef SH_FUNCTION_TYPEDEF
#  define SH_FUNCTION_TYPEDEF

/* Shell function typedefs with prototypes */
/* `Generic' function pointer typedefs */

typedef int sh_intfunc_t __P((int));
typedef int sh_ivoidfunc_t __P((void));
typedef int sh_icpfunc_t __P((char *));
typedef int sh_icppfunc_t __P((char **));
typedef int sh_iptrfunc_t __P((PTR_T));

typedef void sh_voidfunc_t __P((void));
typedef void sh_vintfunc_t __P((int));
typedef void sh_vcpfunc_t __P((char *));
typedef void sh_vcppfunc_t __P((char **));
typedef void sh_vptrfunc_t __P((PTR_T));

typedef int sh_wdesc_func_t __P((WORD_DESC *));
typedef int sh_wlist_func_t __P((WORD_LIST *));

typedef int sh_glist_func_t __P((GENERIC_LIST *));

typedef char *sh_string_func_t __P((char *));	/* like savestring, et al. */

typedef int sh_msg_func_t __P((const char *, ...));	/* printf(3)-like */
typedef void sh_vmsg_func_t __P((const char *, ...));	/* printf(3)-like */

/* Specific function pointer typedefs.  Most of these could be done
   with #defines. */
typedef void sh_sv_func_t __P((char *));	/* sh_vcpfunc_t */
typedef void sh_free_func_t __P((PTR_T));	/* sh_vptrfunc_t */
typedef void sh_resetsig_func_t __P((int));	/* sh_vintfunc_t */

typedef int sh_ignore_func_t __P((const char *));	/* sh_icpfunc_t */

typedef int sh_assign_func_t __P((const char *));
typedef int sh_wassign_func_t __P((WORD_DESC *, int));

typedef int sh_load_func_t __P((char *));
typedef void sh_unload_func_t __P((char *));

typedef int sh_builtin_func_t __P((WORD_LIST *)); /* sh_wlist_func_t */

#endif /* SH_FUNCTION_TYPEDEF */

#define NOW	((time_t) time ((time_t *) 0))

/* Some defines for calling file status functions. */
#define FS_EXISTS	  0x1
#define FS_EXECABLE	  0x2
#define FS_EXEC_PREFERRED 0x4
#define FS_EXEC_ONLY	  0x8
#define FS_DIRECTORY	  0x10
#define FS_NODIRS	  0x20
#define FS_READABLE	  0x40

/* Default maximum for move_to_high_fd */
#define HIGH_FD_MAX	256

/* The type of function passed as the fourth argument to qsort(3). */
#ifdef __STDC__
typedef int QSFUNC (const void *, const void *);
#else
typedef int QSFUNC ();
#endif 

/* Some useful definitions for Unix pathnames.  Argument convention:
   x == string, c == character */

#if !defined (__CYGWIN__)
#  define ABSPATH(x)	((x)[0] == '/')
#  define RELPATH(x)	((x)[0] != '/')
#else /* __CYGWIN__ */
#  define ABSPATH(x)	(((x)[0] && ISALPHA((unsigned char)(x)[0]) && (x)[1] == ':') || ISDIRSEP((x)[0]))
#  define RELPATH(x)	(ABSPATH(x) == 0)
#endif /* __CYGWIN__ */

#define ROOTEDPATH(x)	(ABSPATH(x))

#define DIRSEP	'/'
#if !defined (__CYGWIN__)
#  define ISDIRSEP(c)	((c) == '/')
#else
#  define ISDIRSEP(c)	((c) == '/' || (c) == '\\')
#endif /* __CYGWIN__ */
#define PATHSEP(c)	(ISDIRSEP(c) || (c) == 0)

#if 0
/* Declarations for functions defined in xmalloc.c */
extern PTR_T xmalloc __P((size_t));
extern PTR_T xrealloc __P((void *, size_t));
extern void xfree __P((void *));
#endif

/* Declarations for functions defined in general.c */
extern void posix_initialize __P((int));

extern int num_posix_options __P((void));
extern char *get_posix_options __P((char *));
extern void set_posix_options __P((const char *));

#if defined (RLIMTYPE)
extern RLIMTYPE string_to_rlimtype __P((char *));
extern void print_rlimtype __P((RLIMTYPE, int));
#endif

extern int all_digits __P((const char *));
extern int legal_number __P((const char *, intmax_t *));
extern int legal_identifier __P((const char *));
extern int importable_function_name __P((const char *, size_t));
extern int exportable_function_name __P((const char *));
extern int check_identifier __P((WORD_DESC *, int));
extern int valid_nameref_value __P((const char *, int));
extern int check_selfref __P((const char *, char *, int));
extern int legal_alias_name __P((const char *, int));
extern int line_isblank __P((const char *));
extern int assignment __P((const char *, int));

extern int sh_unset_nodelay_mode __P((int));
extern int sh_setclexec __P((int));
extern int sh_validfd __P((int));
extern int fd_ispipe __P((int));
extern void check_dev_tty __P((void));
extern int move_to_high_fd __P((int, int, int));
extern int check_binary_file __P((const char *, int));

#ifdef _POSIXSTAT_H_
extern int same_file __P((const char *, const char *, struct stat *, struct stat *));
#endif

extern int sh_openpipe __P((int *));
extern int sh_closepipe __P((int *));

extern int file_exists __P((const char *));
extern int file_isdir __P((const char  *));
extern int file_iswdir __P((const char  *));
extern int path_dot_or_dotdot __P((const char *));
extern int absolute_pathname __P((const char *));
extern int absolute_program __P((const char *));

extern char *make_absolute __P((const char *, const char *));
extern char *base_pathname __P((char *));
extern char *full_pathname __P((char *));
extern char *polite_directory_format __P((char *));
extern char *trim_pathname __P((char *, int));
extern char *printable_filename __P((char *, int));

extern char *extract_colon_unit __P((char *, int *));

extern void tilde_initialize __P((void));
extern char *bash_tilde_find_word __P((const char *, int, int *));
extern char *bash_tilde_expand __P((const char *, int));

extern int group_member __P((gid_t));
extern char **get_group_list __P((int *));
extern int *get_group_array __P((int *));

extern char *conf_standard_path __P((void));
extern int default_columns __P((void));

#endif	/* _GENERAL_H_ */
Commit	Line	Data
726f6388 JA	1	/* general.h -- defines that everybody likes to use. */
726f6388 JA	2
a0c0a00f	3	/* Copyright (C) 1993-2016 Free Software Foundation, Inc.
726f6388 JA	4
	5	This file is part of GNU Bash, the Bourne Again SHell.
	6
3185942a JA	7	Bash is free software: you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation, either version 3 of the License, or
	10	(at your option) any later version.
726f6388	11
3185942a JA	12	Bash is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
726f6388	16
3185942a JA	17	You should have received a copy of the GNU General Public License
	18	along with Bash. If not, see <http://www.gnu.org/licenses/>.
	19	*/
726f6388	20
ccc6cda3 JA	21	#if !defined (_GENERAL_H_)
ccc6cda3 JA	22	#define _GENERAL_H_
726f6388 JA	23
	24	#include "stdc.h"
	25
d166f048	26	#include "bashtypes.h"
95732b49	27	#include "chartypes.h"
d166f048	28
cce855bc JA	29	#if defined (HAVE_SYS_RESOURCE_H) && defined (RLIMTYPE)
	30	# if defined (HAVE_SYS_TIME_H)
	31	# include <sys/time.h>
	32	# endif
	33	# include <sys/resource.h>
	34	#endif
	35
d166f048 JA	36	#if defined (HAVE_STRING_H)
	37	# include <string.h>
	38	#else
	39	# include <strings.h>
	40	#endif /* !HAVE_STRING_H */
	41
f73dda09 JA	42	#if defined (HAVE_LIMITS_H)
f73dda09 JA	43	# include <limits.h>
726f6388 JA	44	#endif
726f6388 JA	45
f73dda09 JA	46	#include "xmalloc.h"
f73dda09 JA	47
ccc6cda3	48	/* NULL pointer type. */
726f6388 JA	49	#if !defined (NULL)
	50	# if defined (__STDC__)
	51	# define NULL ((void *) 0)
	52	# else
	53	# define NULL 0x0
	54	# endif /* !__STDC__ */
	55	#endif /* !NULL */
	56
7117c2d2 JA	57	/* Hardly used anymore */
7117c2d2 JA	58	#define pointer_to_int(x) (int)((char )x - (char )0)
726f6388	59
ccc6cda3 JA	60	#if defined (alpha) && defined (__GNUC__) && !defined (strchr) && !defined (__STDC__)
	61	extern char strchr (), strrchr ();
	62	#endif
	63
7117c2d2	64	#if !defined (strcpy) && (defined (HAVE_DECL_STRCPY) && !HAVE_DECL_STRCPY)
f73dda09	65	extern char strcpy __P((char , const char *));
ccc6cda3 JA	66	#endif
ccc6cda3 JA	67
726f6388	68	#if !defined (savestring)
726f6388 JA	69	# define savestring(x) (char *)strcpy (xmalloc (1 + strlen (x)), (x))
	70	#endif
	71
ccc6cda3	72	#ifndef member
0001803f	73	# define member(c, s) ((c) ? ((char )mbschr ((s), (c)) != (char )NULL) : 0)
ccc6cda3 JA	74	#endif
ccc6cda3 JA	75
726f6388 JA	76	#ifndef whitespace
	77	#define whitespace(c) (((c) == ' ') \|\| ((c) == '\t'))
	78	#endif
	79
f73dda09 JA	80	#ifndef CHAR_MAX
	81	# ifdef __CHAR_UNSIGNED__
	82	# define CHAR_MAX 0xff
	83	# else
	84	# define CHAR_MAX 0x7f
	85	# endif
726f6388 JA	86	#endif
726f6388 JA	87
f73dda09 JA	88	#ifndef CHAR_BIT
f73dda09 JA	89	# define CHAR_BIT 8
726f6388 JA	90	#endif
726f6388 JA	91
f73dda09 JA	92	/* Nonzero if the integer type T is signed. */
	93	#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
	94
d233b485 CR	95	/* The width in bits of the integer type or expression T.
	96	Padding bits are not supported; this is checked at compile-time below. */
	97	#define TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT)
	98
	99	/* Bound on length of the string representing an unsigned integer
	100	value representable in B bits. log10 (2.0) < 146/485. The
	101	smallest value of B where this bound is not tight is 2621. */
	102	#define INT_BITS_STRLEN_BOUND(b) (((b) * 146 + 484) / 485)
	103
f73dda09 JA	104	/* Bound on length of the string representing an integer value of type T.
	105	Subtract one for the sign bit if T is signed;
	106	302 / 1000 is log10 (2) rounded up;
	107	add one for integer division truncation;
	108	add one more for a minus sign if t is signed. */
	109	#define INT_STRLEN_BOUND(t) \
d233b485	110	((TYPE_WIDTH (t) - TYPE_SIGNED (t)) * 302 / 1000 \
f73dda09	111	+ 1 + TYPE_SIGNED (t))
726f6388	112
d233b485 CR	113	/* Updated version adapted from gnulib/intprops.h, not used right now.
	114	Changes the approximation of log10(2) from 302/1000 to 146/485. */
	115	#if 0
	116	#define INT_STRLEN_BOUND(t) \
	117	(INT_BITS_STRLEN_BOUND (TYPE_WIDTH (t) - TYPE_SIGNED (t)) + TYPE_SIGNED(t))
	118	#endif
	119
	120	/* Bound on buffer size needed to represent an integer type or expression T,
	121	including the terminating null. */
	122	#define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1)
28ef6c31	123
ccc6cda3	124	/* Define exactly what a legal shell identifier consists of. */
f73dda09 JA	125	#define legal_variable_starter(c) (ISALPHA(c) \|\| (c == '_'))
f73dda09 JA	126	#define legal_variable_char(c) (ISALNUM(c) \|\| c == '_')
ccc6cda3	127
726f6388 JA	128	/* Definitions used in subst.c and by the `read' builtin for field
	129	splitting. */
	130	#define spctabnl(c) ((c) == ' ' \|\| (c) == '\t' \|\| (c) == '\n')
	131
726f6388 JA	132	/* All structs which contain a `next' field should have that field
	133	as the first field in the struct. This means that functions
	134	can be written to handle the general case for linked lists. */
	135	typedef struct g_list {
	136	struct g_list *next;
	137	} GENERIC_LIST;
	138
	139	/* Here is a generic structure for associating character strings
	140	with integers. It is used in the parser for shell tokenization. */
	141	typedef struct {
	142	char *word;
	143	int token;
	144	} STRING_INT_ALIST;
	145
a0c0a00f	146	/* A macro to avoid making an unnecessary function call. */
726f6388	147	#define REVERSE_LIST(list, type) \
7117c2d2	148	((list && list->next) ? (type)list_reverse ((GENERIC_LIST *)list) \
28ef6c31	149	: (type)(list))
726f6388 JA	150
726f6388 JA	151	#if __GNUC__ > 1
95732b49	152	# define FASTCOPY(s, d, n) __builtin_memcpy ((d), (s), (n))
726f6388	153	#else /* !__GNUC__ */
ccc6cda3 JA	154	# if !defined (HAVE_BCOPY)
ccc6cda3 JA	155	# if !defined (HAVE_MEMMOVE)
95732b49	156	# define FASTCOPY(s, d, n) memcpy ((d), (s), (n))
726f6388	157	# else
95732b49	158	# define FASTCOPY(s, d, n) memmove ((d), (s), (n))
ccc6cda3 JA	159	# endif /* !HAVE_MEMMOVE */
ccc6cda3 JA	160	# else /* HAVE_BCOPY */
95732b49	161	# define FASTCOPY(s, d, n) bcopy ((s), (d), (n))
ccc6cda3	162	# endif /* HAVE_BCOPY */
726f6388 JA	163	#endif /* !__GNUC__ */
	164
	165	/* String comparisons that possibly save a function call each. */
	166	#define STREQ(a, b) ((a)[0] == (b)[0] && strcmp(a, b) == 0)
bb70624e JA	167	#define STREQN(a, b, n) ((n == 0) ? (1) \
bb70624e JA	168	: ((a)[0] == (b)[0] && strncmp(a, b, n) == 0))
726f6388 JA	169
	170	/* More convenience definitions that possibly save system or libc calls. */
	171	#define STRLEN(s) (((s) && (s)[0]) ? ((s)[1] ? ((s)[2] ? strlen(s) : 2) : 1) : 0)
	172	#define FREE(s) do { if (s) free (s); } while (0)
cce855bc	173	#define MEMBER(c, s) (((c) && c == (s)[0] && !(s)[1]) \|\| (member(c, s)))
726f6388	174
ccc6cda3 JA	175	/* A fairly hairy macro to check whether an allocated string has more room,
	176	and to resize it using xrealloc if it does not.
	177	STR is the string (char *)
	178	CIND is the current index into the string (int)
	179	ROOM is the amount of additional room we need in the string (int)
	180	CSIZE is the currently-allocated size of STR (int)
	181	SINCR is how much to increment CSIZE before calling xrealloc (int) */
	182
	183	#define RESIZE_MALLOCED_BUFFER(str, cind, room, csize, sincr) \
	184	do { \
	185	if ((cind) + (room) >= csize) \
	186	{ \
	187	while ((cind) + (room) >= csize) \
	188	csize += (sincr); \
	189	str = xrealloc (str, csize); \
	190	} \
	191	} while (0)
726f6388 JA	192
726f6388 JA	193	/* Function pointers can be declared as (Function )foo. /
ccc6cda3 JA	194	#if !defined (_FUNCTION_DEF)
ccc6cda3 JA	195	# define _FUNCTION_DEF
726f6388 JA	196	typedef int Function ();
726f6388 JA	197	typedef void VFunction ();
f73dda09 JA	198	typedef char CPFunction (); / no longer used */
f73dda09 JA	199	typedef char *CPPFunction (); / no longer used */
726f6388 JA	200	#endif /* _FUNCTION_DEF */
726f6388 JA	201
f73dda09 JA	202	#ifndef SH_FUNCTION_TYPEDEF
	203	# define SH_FUNCTION_TYPEDEF
	204
	205	/* Shell function typedefs with prototypes */
	206	/* `Generic' function pointer typedefs */
	207
	208	typedef int sh_intfunc_t __P((int));
	209	typedef int sh_ivoidfunc_t __P((void));
	210	typedef int sh_icpfunc_t __P((char *));
	211	typedef int sh_icppfunc_t __P((char **));
	212	typedef int sh_iptrfunc_t __P((PTR_T));
	213
	214	typedef void sh_voidfunc_t __P((void));
	215	typedef void sh_vintfunc_t __P((int));
	216	typedef void sh_vcpfunc_t __P((char *));
	217	typedef void sh_vcppfunc_t __P((char **));
	218	typedef void sh_vptrfunc_t __P((PTR_T));
	219
	220	typedef int sh_wdesc_func_t __P((WORD_DESC *));
	221	typedef int sh_wlist_func_t __P((WORD_LIST *));
	222
	223	typedef int sh_glist_func_t __P((GENERIC_LIST *));
	224
	225	typedef char sh_string_func_t __P((char )); /* like savestring, et al. */
	226
	227	typedef int sh_msg_func_t __P((const char , ...)); / printf(3)-like */
	228	typedef void sh_vmsg_func_t __P((const char , ...)); / printf(3)-like */
	229
	230	/* Specific function pointer typedefs. Most of these could be done
	231	with #defines. */
	232	typedef void sh_sv_func_t __P((char )); / sh_vcpfunc_t */
	233	typedef void sh_free_func_t __P((PTR_T)); /* sh_vptrfunc_t */
	234	typedef void sh_resetsig_func_t __P((int)); /* sh_vintfunc_t */
	235
	236	typedef int sh_ignore_func_t __P((const char )); / sh_icpfunc_t */
	237
495aee44 CR	238	typedef int sh_assign_func_t __P((const char *));
495aee44 CR	239	typedef int sh_wassign_func_t __P((WORD_DESC *, int));
f73dda09	240
a0c0a00f CR	241	typedef int sh_load_func_t __P((char *));
	242	typedef void sh_unload_func_t __P((char *));
	243
f73dda09 JA	244	typedef int sh_builtin_func_t __P((WORD_LIST )); / sh_wlist_func_t */
	245
	246	#endif /* SH_FUNCTION_TYPEDEF */
	247
726f6388 JA	248	#define NOW ((time_t) time ((time_t *) 0))
	249
	250	/* Some defines for calling file status functions. */
	251	#define FS_EXISTS 0x1
	252	#define FS_EXECABLE 0x2
	253	#define FS_EXEC_PREFERRED 0x4
	254	#define FS_EXEC_ONLY 0x8
ccc6cda3 JA	255	#define FS_DIRECTORY 0x10
ccc6cda3 JA	256	#define FS_NODIRS 0x20
95732b49	257	#define FS_READABLE 0x40
726f6388	258
7117c2d2 JA	259	/* Default maximum for move_to_high_fd */
	260	#define HIGH_FD_MAX 256
	261
f73dda09 JA	262	/* The type of function passed as the fourth argument to qsort(3). */
	263	#ifdef __STDC__
	264	typedef int QSFUNC (const void , const void );
	265	#else
	266	typedef int QSFUNC ();
	267	#endif
	268
28ef6c31 JA	269	/* Some useful definitions for Unix pathnames. Argument convention:
	270	x == string, c == character */
	271
	272	#if !defined (__CYGWIN__)
	273	# define ABSPATH(x) ((x)[0] == '/')
	274	# define RELPATH(x) ((x)[0] != '/')
	275	#else /* __CYGWIN__ */
95732b49 JA	276	# define ABSPATH(x) (((x)[0] && ISALPHA((unsigned char)(x)[0]) && (x)[1] == ':') \|\| ISDIRSEP((x)[0]))
95732b49 JA	277	# define RELPATH(x) (ABSPATH(x) == 0)
28ef6c31 JA	278	#endif /* __CYGWIN__ */
	279
	280	#define ROOTEDPATH(x) (ABSPATH(x))
	281
	282	#define DIRSEP '/'
95732b49 JA	283	#if !defined (__CYGWIN__)
	284	# define ISDIRSEP(c) ((c) == '/')
	285	#else
	286	# define ISDIRSEP(c) ((c) == '/' \|\| (c) == '\\')
	287	#endif /* __CYGWIN__ */
28ef6c31 JA	288	#define PATHSEP(c) (ISDIRSEP(c) \|\| (c) == 0)
28ef6c31 JA	289
f73dda09	290	#if 0
ccc6cda3	291	/* Declarations for functions defined in xmalloc.c */
f73dda09 JA	292	extern PTR_T xmalloc __P((size_t));
f73dda09 JA	293	extern PTR_T xrealloc __P((void *, size_t));
bb70624e	294	extern void xfree __P((void *));
f73dda09	295	#endif
726f6388	296
ccc6cda3 JA	297	/* Declarations for functions defined in general.c */
ccc6cda3 JA	298	extern void posix_initialize __P((int));
726f6388	299
d233b485 CR	300	extern int num_posix_options __P((void));
	301	extern char get_posix_options __P((char ));
	302	extern void set_posix_options __P((const char *));
	303
ccc6cda3 JA	304	#if defined (RLIMTYPE)
	305	extern RLIMTYPE string_to_rlimtype __P((char *));
	306	extern void print_rlimtype __P((RLIMTYPE, int));
	307	#endif
726f6388	308
a0c0a00f	309	extern int all_digits __P((const char *));
3185942a	310	extern int legal_number __P((const char , intmax_t ));
a0c0a00f CR	311	extern int legal_identifier __P((const char *));
	312	extern int importable_function_name __P((const char *, size_t));
	313	extern int exportable_function_name __P((const char *));
726f6388	314	extern int check_identifier __P((WORD_DESC *, int));
a0c0a00f CR	315	extern int valid_nameref_value __P((const char *, int));
	316	extern int check_selfref __P((const char , char , int));
	317	extern int legal_alias_name __P((const char *, int));
d233b485	318	extern int line_isblank __P((const char *));
b80f6443	319	extern int assignment __P((const char *, int));
ccc6cda3	320
28ef6c31	321	extern int sh_unset_nodelay_mode __P((int));
d233b485	322	extern int sh_setclexec __P((int));
7117c2d2	323	extern int sh_validfd __P((int));
495aee44	324	extern int fd_ispipe __P((int));
ccc6cda3	325	extern void check_dev_tty __P((void));
d166f048	326	extern int move_to_high_fd __P((int, int, int));
a0c0a00f	327	extern int check_binary_file __P((const char *, int));
f73dda09 JA	328
f73dda09 JA	329	#ifdef _POSIXSTAT_H_
a0c0a00f	330	extern int same_file __P((const char , const char , struct stat , struct stat ));
f73dda09	331	#endif
ccc6cda3	332
3185942a JA	333	extern int sh_openpipe __P((int *));
	334	extern int sh_closepipe __P((int *));
	335
a0c0a00f CR	336	extern int file_exists __P((const char *));
	337	extern int file_isdir __P((const char *));
	338	extern int file_iswdir __P((const char *));
ac50fbac	339	extern int path_dot_or_dotdot __P((const char *));
f73dda09 JA	340	extern int absolute_pathname __P((const char *));
f73dda09 JA	341	extern int absolute_program __P((const char *));
95732b49	342
a0c0a00f	343	extern char make_absolute __P((const char , const char *));
726f6388 JA	344	extern char base_pathname __P((char ));
726f6388 JA	345	extern char full_pathname __P((char ));
726f6388	346	extern char polite_directory_format __P((char ));
3185942a	347	extern char trim_pathname __P((char , int));
a0c0a00f	348	extern char printable_filename __P((char , int));
726f6388	349
ccc6cda3	350	extern char extract_colon_unit __P((char , int *));
726f6388	351
ccc6cda3	352	extern void tilde_initialize __P((void));
95732b49	353	extern char bash_tilde_find_word __P((const char , int, int *));
7117c2d2	354	extern char bash_tilde_expand __P((const char , int));
726f6388	355
d166f048	356	extern int group_member __P((gid_t));
d166f048	357	extern char *get_group_list __P((int ));
b72432fd	358	extern int get_group_array __P((int ));
d166f048	359
a0c0a00f	360	extern char *conf_standard_path __P((void));
d233b485	361	extern int default_columns __P((void));
a0c0a00f	362
ccc6cda3	363	#endif /* _GENERAL_H_ */