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glibc/posix/glob.h
Adhemerval Zanella a4ed0471d7 Always define __USE_TIME_BITS64 when 64 bit time_t is used 
It was raised on libc-help [1] that some Linux kernel interfaces expect
the libc to define __USE_TIME_BITS64 to indicate the time_t size for the
kABI.  Different than defined by the initial y2038 design document [2],
the __USE_TIME_BITS64 is only defined for ABIs that support more than
one time_t size (by defining the _TIME_BITS for each module).

The 64 bit time_t redirects are now enabled using a different internal
define (__USE_TIME64_REDIRECTS). There is no expected change in semantic
or code generation.

Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and
arm-linux-gnueabi

[1] https://sourceware.org/pipermail/libc-help/2024-January/006557.html
[2] https://sourceware.org/glibc/wiki/Y2038ProofnessDesign

Reviewed-by: DJ Delorie <dj@redhat.com>
2024-04-02 15:28:36 -03:00

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/* Copyright (C) 1991-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _GLOB_H
#define _GLOB_H 1
#include <sys/cdefs.h>
__BEGIN_DECLS
/* We need `size_t' for the following definitions. */
#ifndef __size_t
typedef __SIZE_TYPE__ __size_t;
# if defined __USE_XOPEN || defined __USE_XOPEN2K8
typedef __SIZE_TYPE__ size_t;
# endif
#else
/* The GNU CC stddef.h version defines __size_t as empty. We need a real
definition. */
# undef __size_t
# define __size_t size_t
#endif
/* Bits set in the FLAGS argument to `glob'. */
#define GLOB_ERR (1 << 0)/* Return on read errors. */
#define GLOB_MARK (1 << 1)/* Append a slash to each name. */
#define GLOB_NOSORT (1 << 2)/* Don't sort the names. */
#define GLOB_DOOFFS (1 << 3)/* Insert PGLOB->gl_offs NULLs. */
#define GLOB_NOCHECK (1 << 4)/* If nothing matches, return the pattern. */
#define GLOB_APPEND (1 << 5)/* Append to results of a previous call. */
#define GLOB_NOESCAPE (1 << 6)/* Backslashes don't quote metacharacters. */
#define GLOB_PERIOD (1 << 7)/* Leading `.' can be matched by metachars. */
#if !defined __USE_POSIX2 || defined __USE_MISC
# define GLOB_MAGCHAR (1 << 8)/* Set in gl_flags if any metachars seen. */
# define GLOB_ALTDIRFUNC (1 << 9)/* Use gl_opendir et al functions. */
# define GLOB_BRACE (1 << 10)/* Expand "{a,b}" to "a" "b". */
# define GLOB_NOMAGIC (1 << 11)/* If no magic chars, return the pattern. */
# define GLOB_TILDE (1 << 12)/* Expand ~user and ~ to home directories. */
# define GLOB_ONLYDIR (1 << 13)/* Match only directories. */
# define GLOB_TILDE_CHECK (1 << 14)/* Like GLOB_TILDE but return an error
if the user name is not available. */
# define __GLOB_FLAGS (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS \
|GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND \
|GLOB_PERIOD|GLOB_ALTDIRFUNC|GLOB_BRACE \
|GLOB_NOMAGIC|GLOB_TILDE|GLOB_ONLYDIR|GLOB_TILDE_CHECK)
#else
# define __GLOB_FLAGS (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS \
|GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND \
|GLOB_PERIOD)
#endif
/* Error returns from `glob'. */
#define GLOB_NOSPACE 1 /* Ran out of memory. */
#define GLOB_ABORTED 2 /* Read error. */
#define GLOB_NOMATCH 3 /* No matches found. */
#define GLOB_NOSYS 4 /* Not implemented. */
#ifdef __USE_GNU
/* Previous versions of this file defined GLOB_ABEND instead of
GLOB_ABORTED. Provide a compatibility definition here. */
# define GLOB_ABEND GLOB_ABORTED
#endif
/* Structure describing a globbing run. */
#ifdef __USE_GNU
struct stat;
#endif
typedef struct
{
__size_t gl_pathc; /* Count of paths matched by the pattern. */
char **gl_pathv; /* List of matched pathnames. */
__size_t gl_offs; /* Slots to reserve in `gl_pathv'. */
int gl_flags; /* Set to FLAGS, maybe | GLOB_MAGCHAR. */
/* If the GLOB_ALTDIRFUNC flag is set, the following functions
are used instead of the normal file access functions. */
void (*gl_closedir) (void *);
#ifdef __USE_GNU
struct dirent *(*gl_readdir) (void *);
#else
void *(*gl_readdir) (void *);
#endif
void *(*gl_opendir) (const char *);
#ifdef __USE_GNU
int (*gl_lstat) (const char *__restrict, struct stat *__restrict);
int (*gl_stat) (const char *__restrict, struct stat *__restrict);
#else
int (*gl_lstat) (const char *__restrict, void *__restrict);
int (*gl_stat) (const char *__restrict, void *__restrict);
#endif
} glob_t;
#ifdef __USE_LARGEFILE64
# ifdef __USE_GNU
struct stat64;
# endif
typedef struct
{
__size_t gl_pathc;
char **gl_pathv;
__size_t gl_offs;
int gl_flags;
/* If the GLOB_ALTDIRFUNC flag is set, the following functions
are used instead of the normal file access functions. */
void (*gl_closedir) (void *);
# ifdef __USE_GNU
struct dirent64 *(*gl_readdir) (void *);
# else
void *(*gl_readdir) (void *);
# endif
void *(*gl_opendir) (const char *);
# ifdef __USE_GNU
int (*gl_lstat) (const char *__restrict, struct stat64 *__restrict);
int (*gl_stat) (const char *__restrict, struct stat64 *__restrict);
# else
int (*gl_lstat) (const char *__restrict, void *__restrict);
int (*gl_stat) (const char *__restrict, void *__restrict);
# endif
} glob64_t;
#endif
/* Do glob searching for PATTERN, placing results in PGLOB.
The bits defined above may be set in FLAGS.
If a directory cannot be opened or read and ERRFUNC is not nil,
it is called with the pathname that caused the error, and the
`errno' value from the failing call; if it returns non-zero
`glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
Otherwise, `glob' returns zero. */
#if !defined __USE_FILE_OFFSET64
extern int glob (const char *__restrict __pattern, int __flags,
int (*__errfunc) (const char *, int),
glob_t *__restrict __pglob) __THROWNL;
/* Free storage allocated in PGLOB by a previous `glob' call. */
extern void globfree (glob_t *__pglob) __THROW;
#else
# ifdef __USE_TIME64_REDIRECTS
extern int __REDIRECT_NTHNL (glob, (const char *__restrict __pattern,
int __flags,
int (*__errfunc) (const char *, int),
glob_t *__restrict __pglob),
__glob64_time64);
extern void __REDIRECT_NTH (globfree, (glob_t *__pglob),
__globfree64_time64);
# else
extern int __REDIRECT_NTHNL (glob, (const char *__restrict __pattern,
int __flags,
int (*__errfunc) (const char *, int),
glob_t *__restrict __pglob), glob64);
extern void __REDIRECT_NTH (globfree, (glob_t *__pglob), globfree64);
# endif
#endif
#ifdef __USE_LARGEFILE64
# ifdef __USE_TIME64_REDIRECTS
extern int __REDIRECT_NTHNL (glob64, (const char *__restrict __pattern,
int __flags,
int (*__errfunc) (const char *, int),
glob64_t *__restrict __pglob),
__glob64_time64);
extern void __REDIRECT_NTH (globfree64, (glob64_t *__pglob),
__globfree64_time64);
# else
extern int glob64 (const char *__restrict __pattern, int __flags,
int (*__errfunc) (const char *, int),
glob64_t *__restrict __pglob) __THROWNL;
extern void globfree64 (glob64_t *__pglob) __THROW;
# endif
#endif
#ifdef __USE_GNU
/* Return nonzero if PATTERN contains any metacharacters.
Metacharacters can be quoted with backslashes if QUOTE is nonzero.
This function is not part of the interface specified by POSIX.2
but several programs want to use it. */
extern int glob_pattern_p (const char *__pattern, int __quote) __THROW;
#endif
__END_DECLS
#endif /* glob.h */
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