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glibc/sysdeps/generic/glob.c
Andreas Jaeger 1338451ba2 Update. 
2000-07-13  Andreas Schwab  <schwab@suse.de>

	* sysdeps/generic/glob.c (glob): Fix memory leak.
	[SHELL]: Remove reference to undefined variable `files'.
	Fixes PR libc/1782.
2000-07-13 12:12:01 +00:00

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/* Copyright (C) 1991-1999, 2000 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* AIX requires this to be the first thing in the file. */
#if defined _AIX && !defined __GNUC__
#pragma alloca
#endif
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/* Enable GNU extensions in glob.h. */
#ifndef _GNU_SOURCE
# define _GNU_SOURCE 1
#endif
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
/* Outcomment the following line for production quality code. */
/* #define NDEBUG 1 */
#include <assert.h>
#include <stdio.h> /* Needed on stupid SunOS for assert. */
/* Comment out all this code if we are using the GNU C Library, and are not
actually compiling the library itself. This code is part of the GNU C
Library, but also included in many other GNU distributions. Compiling
and linking in this code is a waste when using the GNU C library
(especially if it is a shared library). Rather than having every GNU
program understand `configure --with-gnu-libc' and omit the object files,
it is simpler to just do this in the source for each such file. */
#define GLOB_INTERFACE_VERSION 1
#if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
# include <gnu-versions.h>
# if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
# define ELIDE_CODE
# endif
#endif
#ifndef ELIDE_CODE
#if defined STDC_HEADERS || defined __GNU_LIBRARY__
# include <stddef.h>
#endif
#if defined HAVE_UNISTD_H || defined _LIBC
# include <unistd.h>
# ifndef POSIX
# ifdef _POSIX_VERSION
# define POSIX
# endif
# endif
#endif
#if !defined _AMIGA && !defined VMS && !defined WINDOWS32
# include <pwd.h>
#endif
#if !defined __GNU_LIBRARY__ && !defined STDC_HEADERS
extern int errno;
#endif
#ifndef __set_errno
# define __set_errno(val) errno = (val)
#endif
#ifndef NULL
# define NULL 0
#endif
#if defined HAVE_DIRENT_H || defined __GNU_LIBRARY__
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# ifdef HAVE_NDIR_H
# include <ndir.h>
# endif
# ifdef HAVE_VMSDIR_H
# include "vmsdir.h"
# endif /* HAVE_VMSDIR_H */
#endif
/* In GNU systems, <dirent.h> defines this macro for us. */
#ifdef _D_NAMLEN
# undef NAMLEN
# define NAMLEN(d) _D_NAMLEN(d)
#endif
/* When used in the GNU libc the symbol _DIRENT_HAVE_D_TYPE is available
if the `d_type' member for `struct dirent' is available. */
#ifdef _DIRENT_HAVE_D_TYPE
# define HAVE_D_TYPE 1
#endif
#if (defined POSIX || defined WINDOWS32) && !defined __GNU_LIBRARY__
/* Posix does not require that the d_ino field be present, and some
systems do not provide it. */
# define REAL_DIR_ENTRY(dp) 1
#else
# define REAL_DIR_ENTRY(dp) (dp->d_ino != 0)
#endif /* POSIX */
#if defined STDC_HEADERS || defined __GNU_LIBRARY__
# include <stdlib.h>
# include <string.h>
# define ANSI_STRING
#else /* No standard headers. */
extern char *getenv ();
# ifdef HAVE_STRING_H
# include <string.h>
# define ANSI_STRING
# else
# include <strings.h>
# endif
# ifdef HAVE_MEMORY_H
# include <memory.h>
# endif
extern char *malloc (), *realloc ();
extern void free ();
extern void qsort ();
extern void abort (), exit ();
#endif /* Standard headers. */
#ifndef ANSI_STRING
# ifndef bzero
extern void bzero ();
# endif
# ifndef bcopy
extern void bcopy ();
# endif
# define memcpy(d, s, n) bcopy ((s), (d), (n))
# define strrchr rindex
/* memset is only used for zero here, but let's be paranoid. */
# define memset(s, better_be_zero, n) \
((void) ((better_be_zero) == 0 ? (bzero((s), (n)), 0) : (abort(), 0)))
#endif /* Not ANSI_STRING. */
#if !defined HAVE_STRCOLL && !defined _LIBC
# define strcoll strcmp
#endif
#if !defined HAVE_MEMPCPY && __GLIBC__ - 0 == 2 && __GLIBC_MINOR__ >= 1
# define HAVE_MEMPCPY 1
# undef mempcpy
# define mempcpy(Dest, Src, Len) __mempcpy (Dest, Src, Len)
#endif
#ifndef __GNU_LIBRARY__
# ifdef __GNUC__
__inline
# endif
# ifndef __SASC
# ifdef WINDOWS32
static void *
# else
static char *
# endif
my_realloc (p, n)
char *p;
unsigned int n;
{
/* These casts are the for sake of the broken Ultrix compiler,
which warns of illegal pointer combinations otherwise. */
if (p == NULL)
return (char *) malloc (n);
return (char *) realloc (p, n);
}
# define realloc my_realloc
# endif /* __SASC */
#endif /* __GNU_LIBRARY__ */
#if !defined __alloca && !defined __GNU_LIBRARY__
# ifdef __GNUC__
# undef alloca
# define alloca(n) __builtin_alloca (n)
# else /* Not GCC. */
# ifdef HAVE_ALLOCA_H
# include <alloca.h>
# else /* Not HAVE_ALLOCA_H. */
# ifndef _AIX
# ifdef WINDOWS32
# include <malloc.h>
# else
extern char *alloca ();
# endif /* WINDOWS32 */
# endif /* Not _AIX. */
# endif /* sparc or HAVE_ALLOCA_H. */
# endif /* GCC. */
# define __alloca alloca
#endif
#ifndef __GNU_LIBRARY__
# define __stat stat
# ifdef STAT_MACROS_BROKEN
# undef S_ISDIR
# endif
# ifndef S_ISDIR
# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
# endif
#endif
#ifdef _LIBC
# undef strdup
# define strdup(str) __strdup (str)
# define sysconf(id) __sysconf (id)
# define closedir(dir) __closedir (dir)
# define opendir(name) __opendir (name)
# define readdir(str) __readdir (str)
# define getpwnam_r(name, bufp, buf, len, res) \
__getpwnam_r (name, bufp, buf, len, res)
# ifndef __stat64
# define __stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
# endif
# define HAVE_STAT64 1
#endif
#ifndef HAVE_STAT64
# define __stat64(fname, buf) __stat (fname, buf)
/* This is the variable name we are using. */
# define st64 st
#endif
#if !(defined STDC_HEADERS || defined __GNU_LIBRARY__)
# undef size_t
# define size_t unsigned int
#endif
/* Some system header files erroneously define these.
We want our own definitions from <fnmatch.h> to take precedence. */
#ifndef __GNU_LIBRARY__
# undef FNM_PATHNAME
# undef FNM_NOESCAPE
# undef FNM_PERIOD
#endif
#include <fnmatch.h>
/* Some system header files erroneously define these.
We want our own definitions from <glob.h> to take precedence. */
#ifndef __GNU_LIBRARY__
# undef GLOB_ERR
# undef GLOB_MARK
# undef GLOB_NOSORT
# undef GLOB_DOOFFS
# undef GLOB_NOCHECK
# undef GLOB_APPEND
# undef GLOB_NOESCAPE
# undef GLOB_PERIOD
#endif
#include <glob.h>
#ifdef HAVE_GETLOGIN_R
extern int getlogin_r __P ((char *, size_t));
#else
extern char *getlogin __P ((void));
#endif
static
#if __GNUC__ - 0 >= 2
inline
#endif
const char *next_brace_sub __P ((const char *begin));
static int glob_in_dir __P ((const char *pattern, const char *directory,
int flags,
int (*errfunc) (const char *, int),
glob_t *pglob));
static int prefix_array __P ((const char *prefix, char **array, size_t n));
static int collated_compare __P ((const __ptr_t, const __ptr_t));
/* Find the end of the sub-pattern in a brace expression. We define
this as an inline function if the compiler permits. */
static
#if __GNUC__ - 0 >= 2
inline
#endif
const char *
next_brace_sub (begin)
const char *begin;
{
unsigned int depth = 0;
const char *cp = begin;
while (1)
{
if (depth == 0)
{
if (*cp != ',' && *cp != '}' && *cp != '\0')
{
if (*cp == '{')
++depth;
++cp;
continue;
}
}
else
{
while (*cp != '\0' && (*cp != '}' || depth > 0))
{
if (*cp == '}')
--depth;
++cp;
}
if (*cp == '\0')
/* An incorrectly terminated brace expression. */
return NULL;
continue;
}
break;
}
return cp;
}
/* 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_ABORTED; if it returns zero, the error is ignored.
If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
Otherwise, `glob' returns zero. */
int
glob (pattern, flags, errfunc, pglob)
const char *pattern;
int flags;
int (*errfunc) __P ((const char *, int));
glob_t *pglob;
{
const char *filename;
const char *dirname;
size_t dirlen;
int status;
int oldcount;
if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0)
{
__set_errno (EINVAL);
return -1;
}
if (!(flags & GLOB_DOOFFS))
/* Have to do this so `globfree' knows where to start freeing. It
also makes all the code that uses gl_offs simpler. */
pglob->gl_offs = 0;
if (flags & GLOB_BRACE)
{
const char *begin = strchr (pattern, '{');
if (begin != NULL)
{
/* Allocate working buffer large enough for our work. Note that
we have at least an opening and closing brace. */
int firstc;
char *alt_start;
const char *p;
const char *next;
const char *rest;
size_t rest_len;
#ifdef __GNUC__
char onealt[strlen (pattern) - 1];
#else
char *onealt = (char *) malloc (strlen (pattern) - 1);
if (onealt == NULL)
{
if (!(flags & GLOB_APPEND))
globfree (pglob);
return GLOB_NOSPACE;
}
#endif
/* We know the prefix for all sub-patterns. */
#ifdef HAVE_MEMPCPY
alt_start = mempcpy (onealt, pattern, begin - pattern);
#else
memcpy (onealt, pattern, begin - pattern);
alt_start = &onealt[begin - pattern];
#endif
/* Find the first sub-pattern and at the same time find the
rest after the closing brace. */
next = next_brace_sub (begin + 1);
if (next == NULL)
{
/* It is an illegal expression. */
#ifndef __GNUC__
free (onealt);
#endif
return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
}
/* Now find the end of the whole brace expression. */
rest = next;
while (*rest != '}')
{
rest = next_brace_sub (rest + 1);
if (rest == NULL)
{
/* It is an illegal expression. */
#ifndef __GNUC__
free (onealt);
#endif
return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
}
}
/* Please note that we now can be sure the brace expression
is well-formed. */
rest_len = strlen (++rest) + 1;
/* We have a brace expression. BEGIN points to the opening {,
NEXT points past the terminator of the first element, and END
points past the final }. We will accumulate result names from
recursive runs for each brace alternative in the buffer using
GLOB_APPEND. */
if (!(flags & GLOB_APPEND))
{
/* This call is to set a new vector, so clear out the
vector so we can append to it. */
pglob->gl_pathc = 0;
pglob->gl_pathv = NULL;
}
firstc = pglob->gl_pathc;
p = begin + 1;
while (1)
{
int result;
/* Construct the new glob expression. */
#ifdef HAVE_MEMPCPY
mempcpy (mempcpy (alt_start, p, next - p), rest, rest_len);
#else
memcpy (alt_start, p, next - p);
memcpy (&alt_start[next - p], rest, rest_len);
#endif
result = glob (onealt,
((flags & ~(GLOB_NOCHECK|GLOB_NOMAGIC))
| GLOB_APPEND), errfunc, pglob);
/* If we got an error, return it. */
if (result && result != GLOB_NOMATCH)
{
#ifndef __GNUC__
free (onealt);
#endif
if (!(flags & GLOB_APPEND))
globfree (pglob);
return result;
}
if (*next == '}')
/* We saw the last entry. */
break;
p = next + 1;
next = next_brace_sub (p);
assert (next != NULL);
}
#ifndef __GNUC__
free (onealt);
#endif
if (pglob->gl_pathc != firstc)
/* We found some entries. */
return 0;
else if (!(flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
return GLOB_NOMATCH;
}
}
/* Find the filename. */
filename = strrchr (pattern, '/');
#if defined __MSDOS__ || defined WINDOWS32
/* The case of "d:pattern". Since `:' is not allowed in
file names, we can safely assume that wherever it
happens in pattern, it signals the filename part. This
is so we could some day support patterns like "[a-z]:foo". */
if (filename == NULL)
filename = strchr (pattern, ':');
#endif /* __MSDOS__ || WINDOWS32 */
if (filename == NULL)
{
/* This can mean two things: a simple name or "~name". The latter
case is nothing but a notation for a directory. */
if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && pattern[0] == '~')
{
dirname = pattern;
dirlen = strlen (pattern);
/* Set FILENAME to NULL as a special flag. This is ugly but
other solutions would require much more code. We test for
this special case below. */
filename = NULL;
}
else
{
filename = pattern;
#ifdef _AMIGA
dirname = "";
#else
dirname = ".";
#endif
dirlen = 0;
}
}
else if (filename == pattern)
{
/* "/pattern". */
dirname = "/";
dirlen = 1;
++filename;
}
else
{
char *newp;
dirlen = filename - pattern;
#if defined __MSDOS__ || defined WINDOWS32
if (*filename == ':'
|| (filename > pattern + 1 && filename[-1] == ':'))
{
char *drive_spec;
++dirlen;
drive_spec = (char *) __alloca (dirlen + 1);
#ifdef HAVE_MEMPCPY
*((char *) mempcpy (drive_spec, pattern, dirlen)) = '\0';
#else
memcpy (drive_spec, pattern, dirlen);
drive_spec[dirlen] = '\0';
#endif
/* For now, disallow wildcards in the drive spec, to
prevent infinite recursion in glob. */
if (__glob_pattern_p (drive_spec, !(flags & GLOB_NOESCAPE)))
return GLOB_NOMATCH;
/* If this is "d:pattern", we need to copy `:' to DIRNAME
as well. If it's "d:/pattern", don't remove the slash
from "d:/", since "d:" and "d:/" are not the same.*/
}
#endif
newp = (char *) __alloca (dirlen + 1);
#ifdef HAVE_MEMPCPY
*((char *) mempcpy (newp, pattern, dirlen)) = '\0';
#else
memcpy (newp, pattern, dirlen);
newp[dirlen] = '\0';
#endif
dirname = newp;
++filename;
if (filename[0] == '\0'
#if defined __MSDOS__ || defined WINDOWS32
&& dirname[dirlen - 1] != ':'
&& (dirlen < 3 || dirname[dirlen - 2] != ':'
|| dirname[dirlen - 1] != '/')
#endif
&& dirlen > 1)
/* "pattern/". Expand "pattern", appending slashes. */
{
int val = glob (dirname, flags | GLOB_MARK, errfunc, pglob);
if (val == 0)
pglob->gl_flags = ((pglob->gl_flags & ~GLOB_MARK)
| (flags & GLOB_MARK));
return val;
}
}
if (!(flags & GLOB_APPEND))
{
pglob->gl_pathc = 0;
if (!(flags & GLOB_DOOFFS))
pglob->gl_pathv = NULL;
else
{
int i;
pglob->gl_pathv = (char **) malloc ((pglob->gl_offs + 1)
* sizeof (char *));
if (pglob->gl_pathv == NULL)
return GLOB_NOSPACE;
for (i = 0; i <= pglob->gl_offs; ++i)
pglob->gl_pathv[i] = NULL;
}
}
oldcount = pglob->gl_pathc + pglob->gl_offs;
#ifndef VMS
if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && dirname[0] == '~')
{
if (dirname[1] == '\0' || dirname[1] == '/')
{
/* Look up home directory. */
const char *home_dir = getenv ("HOME");
# ifdef _AMIGA
if (home_dir == NULL || home_dir[0] == '\0')
home_dir = "SYS:";
# else
# ifdef WINDOWS32
if (home_dir == NULL || home_dir[0] == '\0')
home_dir = "c:/users/default"; /* poor default */
# else
if (home_dir == NULL || home_dir[0] == '\0')
{
int success;
char *name;
# if defined HAVE_GETLOGIN_R || defined _LIBC
size_t buflen = sysconf (_SC_LOGIN_NAME_MAX) + 1;
if (buflen == 0)
/* `sysconf' does not support _SC_LOGIN_NAME_MAX. Try
a moderate value. */
buflen = 20;
name = (char *) __alloca (buflen);
success = getlogin_r (name, buflen) >= 0;
# else
success = (name = getlogin ()) != NULL;
# endif
if (success)
{
struct passwd *p;
# if defined HAVE_GETPWNAM_R || defined _LIBC
size_t pwbuflen = sysconf (_SC_GETPW_R_SIZE_MAX);
char *pwtmpbuf;
struct passwd pwbuf;
int save = errno;
if (pwbuflen == -1)
/* `sysconf' does not support _SC_GETPW_R_SIZE_MAX.
Try a moderate value. */
pwbuflen = 1024;
pwtmpbuf = (char *) __alloca (pwbuflen);
while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p)
!= 0)
{
if (errno != ERANGE)
{
p = NULL;
break;
}
pwbuflen *= 2;
pwtmpbuf = (char *) __alloca (pwbuflen);
__set_errno (save);
}
# else
p = getpwnam (name);
# endif
if (p != NULL)
home_dir = p->pw_dir;
}
}
if (home_dir == NULL || home_dir[0] == '\0')
{
if (flags & GLOB_TILDE_CHECK)
return GLOB_NOMATCH;
else
home_dir = "~"; /* No luck. */
}
# endif /* WINDOWS32 */
# endif
/* Now construct the full directory. */
if (dirname[1] == '\0')
dirname = home_dir;
else
{
char *newp;
size_t home_len = strlen (home_dir);
newp = (char *) __alloca (home_len + dirlen);
# ifdef HAVE_MEMPCPY
mempcpy (mempcpy (newp, home_dir, home_len),
&dirname[1], dirlen);
# else
memcpy (newp, home_dir, home_len);
memcpy (&newp[home_len], &dirname[1], dirlen);
# endif
dirname = newp;
}
}
# if !defined _AMIGA && !defined WINDOWS32
else
{
char *end_name = strchr (dirname, '/');
const char *user_name;
const char *home_dir;
if (end_name == NULL)
user_name = dirname + 1;
else
{
char *newp;
newp = (char *) __alloca (end_name - dirname);
# ifdef HAVE_MEMPCPY
*((char *) mempcpy (newp, dirname + 1, end_name - dirname))
= '\0';
# else
memcpy (newp, dirname + 1, end_name - dirname);
newp[end_name - dirname - 1] = '\0';
# endif
user_name = newp;
}
/* Look up specific user's home directory. */
{
struct passwd *p;
# if defined HAVE_GETPWNAM_R || defined _LIBC
size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
char *pwtmpbuf;
struct passwd pwbuf;
int save = errno;
if (buflen == -1)
/* `sysconf' does not support _SC_GETPW_R_SIZE_MAX. Try a
moderate value. */
buflen = 1024;
pwtmpbuf = (char *) __alloca (buflen);
while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0)
{
if (errno != ERANGE)
{
p = NULL;
break;
}
buflen *= 2;
pwtmpbuf = __alloca (buflen);
__set_errno (save);
}
# else
p = getpwnam (user_name);
# endif
if (p != NULL)
home_dir = p->pw_dir;
else
home_dir = NULL;
}
/* If we found a home directory use this. */
if (home_dir != NULL)
{
char *newp;
size_t home_len = strlen (home_dir);
size_t rest_len = end_name == NULL ? 0 : strlen (end_name);
newp = (char *) __alloca (home_len + rest_len + 1);
# ifdef HAVE_MEMPCPY
*((char *) mempcpy (mempcpy (newp, home_dir, home_len),
end_name, rest_len)) = '\0';
# else
memcpy (newp, home_dir, home_len);
memcpy (&newp[home_len], end_name, rest_len);
newp[home_len + rest_len] = '\0';
# endif
dirname = newp;
}
else
if (flags & GLOB_TILDE_CHECK)
/* We have to regard it as an error if we cannot find the
home directory. */
return GLOB_NOMATCH;
}
# endif /* Not Amiga && not WINDOWS32. */
}
#endif /* Not VMS. */
/* Now test whether we looked for "~" or "~NAME". In this case we
can give the answer now. */
if (filename == NULL)
{
struct stat st;
#ifdef HAVE_STAT64
struct stat64 st64;
#endif
/* Return the directory if we don't check for error or if it exists. */
if ((flags & GLOB_NOCHECK)
|| (((flags & GLOB_ALTDIRFUNC)
? ((*pglob->gl_stat) (dirname, &st) == 0
&& S_ISDIR (st.st_mode))
: (__stat64 (dirname, &st64) == 0 && S_ISDIR (st64.st_mode)))))
{
int newcount = pglob->gl_pathc + pglob->gl_offs;
pglob->gl_pathv
= (char **) realloc (pglob->gl_pathv,
(newcount + 1 + 1) * sizeof (char *));
if (pglob->gl_pathv == NULL)
return GLOB_NOSPACE;
#if defined HAVE_STRDUP || defined _LIBC
pglob->gl_pathv[newcount] = strdup (dirname);
#else
{
size_t len = strlen (dirname) + 1;
char *dircopy = malloc (len);
if (dircopy != NULL)
pglob->gl_pathv[newcount] = memcpy (dircopy, dirname, len);
}
#endif
if (pglob->gl_pathv[newcount] == NULL)
{
free (pglob->gl_pathv);
return GLOB_NOSPACE;
}
pglob->gl_pathv[++newcount] = NULL;
++pglob->gl_pathc;
pglob->gl_flags = flags;
return 0;
}
/* Not found. */
return GLOB_NOMATCH;
}
if (__glob_pattern_p (dirname, !(flags & GLOB_NOESCAPE)))
{
/* The directory name contains metacharacters, so we
have to glob for the directory, and then glob for
the pattern in each directory found. */
glob_t dirs;
register int i;
if ((flags & GLOB_ALTDIRFUNC) != 0)
{
/* Use the alternative access functions also in the recursive
call. */
dirs.gl_opendir = pglob->gl_opendir;
dirs.gl_readdir = pglob->gl_readdir;
dirs.gl_closedir = pglob->gl_closedir;
dirs.gl_stat = pglob->gl_stat;
dirs.gl_lstat = pglob->gl_lstat;
}
status = glob (dirname,
((flags & (GLOB_ERR | GLOB_NOCHECK | GLOB_NOESCAPE
| GLOB_ALTDIRFUNC))
| GLOB_NOSORT | GLOB_ONLYDIR),
errfunc, &dirs);
if (status != 0)
return status;
/* We have successfully globbed the preceding directory name.
For each name we found, call glob_in_dir on it and FILENAME,
appending the results to PGLOB. */
for (i = 0; i < dirs.gl_pathc; ++i)
{
int old_pathc;
#ifdef SHELL
{
/* Make globbing interruptible in the bash shell. */
extern int interrupt_state;
if (interrupt_state)
{
globfree (&dirs);
return GLOB_ABORTED;
}
}
#endif /* SHELL. */
old_pathc = pglob->gl_pathc;
status = glob_in_dir (filename, dirs.gl_pathv[i],
((flags | GLOB_APPEND) & ~GLOB_NOCHECK),
errfunc, pglob);
if (status == GLOB_NOMATCH)
/* No matches in this directory. Try the next. */
continue;
if (status != 0)
{
globfree (&dirs);
globfree (pglob);
return status;
}
/* Stick the directory on the front of each name. */
if (prefix_array (dirs.gl_pathv[i],
&pglob->gl_pathv[old_pathc + pglob->gl_offs],
pglob->gl_pathc - old_pathc))
{
globfree (&dirs);
globfree (pglob);
return GLOB_NOSPACE;
}
}
flags |= GLOB_MAGCHAR;
/* We have ignored the GLOB_NOCHECK flag in the `glob_in_dir' calls.
But if we have not found any matching entry and the GLOB_NOCHECK
flag was set we must return the list consisting of the disrectory
names followed by the filename. */
if (pglob->gl_pathc + pglob->gl_offs == oldcount)
{
/* No matches. */
if (flags & GLOB_NOCHECK)
{
size_t filename_len = strlen (filename) + 1;
char **new_pathv;
int newcount = pglob->gl_pathc + pglob->gl_offs;
struct stat st;
#ifdef HAVE_STAT64
struct stat64 st64;
#endif
/* This is an pessimistic guess about the size. */
pglob->gl_pathv
= (char **) realloc (pglob->gl_pathv,
(newcount + dirs.gl_pathc + 1)
* sizeof (char *));
if (pglob->gl_pathv == NULL)
{
globfree (&dirs);
return GLOB_NOSPACE;
}
for (i = 0; i < dirs.gl_pathc; ++i)
{
const char *dir = dirs.gl_pathv[i];
size_t dir_len = strlen (dir);
/* First check whether this really is a directory. */
if (((flags & GLOB_ALTDIRFUNC)
? ((*pglob->gl_stat) (dir, &st) != 0
|| !S_ISDIR (st.st_mode))
: (__stat64 (dir, &st64) != 0
|| !S_ISDIR (st64.st_mode))))
/* No directory, ignore this entry. */
continue;
pglob->gl_pathv[newcount] = malloc (dir_len + 1
+ filename_len);
if (pglob->gl_pathv[newcount] == NULL)
{
globfree (&dirs);
globfree (pglob);
return GLOB_NOSPACE;
}
#ifdef HAVE_MEMPCPY
mempcpy (mempcpy (mempcpy (pglob->gl_pathv[newcount],
dir, dir_len),
"/", 1),
filename, filename_len);
#else
memcpy (pglob->gl_pathv[newcount], dir, dir_len);
pglob->gl_pathv[newcount][dir_len] = '/';
memcpy (&pglob->gl_pathv[newcount][dir_len + 1],
filename, filename_len);
#endif
++pglob->gl_pathc;
++newcount;
}
pglob->gl_pathv[newcount] = NULL;
pglob->gl_flags = flags;
/* Now we know how large the gl_pathv vector must be. */
new_pathv = (char **) realloc (pglob->gl_pathv,
((newcount + 1)
* sizeof (char *)));
if (new_pathv != NULL)
pglob->gl_pathv = new_pathv;
}
else
{
globfree (&dirs);
return GLOB_NOMATCH;
}
}
globfree (&dirs);
}
else
{
int old_pathc = pglob->gl_pathc;
status = glob_in_dir (filename, dirname, flags, errfunc, pglob);
if (status != 0)
return status;
if (dirlen > 0)
{
/* Stick the directory on the front of each name. */
if (prefix_array (dirname,
&pglob->gl_pathv[old_pathc + pglob->gl_offs],
pglob->gl_pathc - old_pathc))
{
globfree (pglob);
return GLOB_NOSPACE;
}
}
}
if (flags & GLOB_MARK)
{
/* Append slashes to directory names. */
int i;
struct stat st;
#ifdef HAVE_STAT64
struct stat64 st64;
#endif
for (i = oldcount; i < pglob->gl_pathc + pglob->gl_offs; ++i)
if (((flags & GLOB_ALTDIRFUNC)
? ((*pglob->gl_stat) (pglob->gl_pathv[i], &st) == 0
&& S_ISDIR (st.st_mode))
: (__stat64 (pglob->gl_pathv[i], &st64) == 0
&& S_ISDIR (st64.st_mode))))
{
size_t len = strlen (pglob->gl_pathv[i]) + 2;
char *new = realloc (pglob->gl_pathv[i], len);
if (new == NULL)
{
globfree (pglob);
return GLOB_NOSPACE;
}
strcpy (&new[len - 2], "/");
pglob->gl_pathv[i] = new;
}
}
if (!(flags & GLOB_NOSORT))
{
/* Sort the vector. */
qsort ((__ptr_t) &pglob->gl_pathv[oldcount],
pglob->gl_pathc + pglob->gl_offs - oldcount,
sizeof (char *), collated_compare);
}
return 0;
}
/* Free storage allocated in PGLOB by a previous `glob' call. */
void
globfree (pglob)
register glob_t *pglob;
{
if (pglob->gl_pathv != NULL)
{
register int i;
for (i = 0; i < pglob->gl_pathc; ++i)
if (pglob->gl_pathv[pglob->gl_offs + i] != NULL)
free ((__ptr_t) pglob->gl_pathv[pglob->gl_offs + i]);
free ((__ptr_t) pglob->gl_pathv);
}
}
/* Do a collated comparison of A and B. */
static int
collated_compare (a, b)
const __ptr_t a;
const __ptr_t b;
{
const char *const s1 = *(const char *const * const) a;
const char *const s2 = *(const char *const * const) b;
if (s1 == s2)
return 0;
if (s1 == NULL)
return 1;
if (s2 == NULL)
return -1;
return strcoll (s1, s2);
}
/* Prepend DIRNAME to each of N members of ARRAY, replacing ARRAY's
elements in place. Return nonzero if out of memory, zero if successful.
A slash is inserted between DIRNAME and each elt of ARRAY,
unless DIRNAME is just "/". Each old element of ARRAY is freed. */
static int
prefix_array (dirname, array, n)
const char *dirname;
char **array;
size_t n;
{
register size_t i;
size_t dirlen = strlen (dirname);
#if defined __MSDOS__ || defined WINDOWS32
int sep_char = '/';
# define DIRSEP_CHAR sep_char
#else
# define DIRSEP_CHAR '/'
#endif
if (dirlen == 1 && dirname[0] == '/')
/* DIRNAME is just "/", so normal prepending would get us "//foo".
We want "/foo" instead, so don't prepend any chars from DIRNAME. */
dirlen = 0;
#if defined __MSDOS__ || defined WINDOWS32
else if (dirlen > 1)
{
if (dirname[dirlen - 1] == '/' && dirname[dirlen - 2] == ':')
/* DIRNAME is "d:/". Don't prepend the slash from DIRNAME. */
--dirlen;
else if (dirname[dirlen - 1] == ':')
{
/* DIRNAME is "d:". Use `:' instead of `/'. */
--dirlen;
sep_char = ':';
}
}
#endif
for (i = 0; i < n; ++i)
{
size_t eltlen = strlen (array[i]) + 1;
char *new = (char *) malloc (dirlen + 1 + eltlen);
if (new == NULL)
{
while (i > 0)
free ((__ptr_t) array[--i]);
return 1;
}
#ifdef HAVE_MEMPCPY
{
char *endp = (char *) mempcpy (new, dirname, dirlen);
*endp++ = DIRSEP_CHAR;
mempcpy (endp, array[i], eltlen);
}
#else
memcpy (new, dirname, dirlen);
new[dirlen] = DIRSEP_CHAR;
memcpy (&new[dirlen + 1], array[i], eltlen);
#endif
free ((__ptr_t) array[i]);
array[i] = new;
}
return 0;
}
/* We must not compile this function twice. */
#if !defined _LIBC || !defined NO_GLOB_PATTERN_P
/* Return nonzero if PATTERN contains any metacharacters.
Metacharacters can be quoted with backslashes if QUOTE is nonzero. */
int
__glob_pattern_p (pattern, quote)
const char *pattern;
int quote;
{
register const char *p;
int open = 0;
for (p = pattern; *p != '\0'; ++p)
switch (*p)
{
case '?':
case '*':
return 1;
case '\\':
if (quote && p[1] != '\0')
++p;
break;
case '[':
open = 1;
break;
case ']':
if (open)
return 1;
break;
}
return 0;
}
# ifdef _LIBC
weak_alias (__glob_pattern_p, glob_pattern_p)
# endif
#endif
/* Like `glob', but PATTERN is a final pathname component,
and matches are searched for in DIRECTORY.
The GLOB_NOSORT bit in FLAGS is ignored. No sorting is ever done.
The GLOB_APPEND flag is assumed to be set (always appends). */
static int
glob_in_dir (pattern, directory, flags, errfunc, pglob)
const char *pattern;
const char *directory;
int flags;
int (*errfunc) __P ((const char *, int));
glob_t *pglob;
{
__ptr_t stream = NULL;
struct globlink
{
struct globlink *next;
char *name;
};
struct globlink *names = NULL;
size_t nfound;
int meta;
int save;
meta = __glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE));
if (meta == 0 && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
{
/* We need not do any tests. The PATTERN contains no meta
characters and we must not return an error therefore the
result will always contain exactly one name. */
flags |= GLOB_NOCHECK;
nfound = 0;
}
else if (meta == 0 &&
((flags & GLOB_NOESCAPE) || strchr(pattern, '\\') == NULL))
{
/* Since we use the normal file functions we can also use stat()
to verify the file is there. */
struct stat st;
# ifdef HAVE_STAT64
struct stat64 st64;
# endif
size_t patlen = strlen (pattern);
size_t dirlen = strlen (directory);
char *fullname = (char *) __alloca (dirlen + 1 + patlen + 1);
# ifdef HAVE_MEMPCPY
mempcpy (mempcpy (mempcpy (fullname, directory, dirlen),
"/", 1),
pattern, patlen + 1);
# else
memcpy (fullname, directory, dirlen);
fullname[dirlen] = '/';
memcpy (&fullname[dirlen + 1], pattern, patlen + 1);
# endif
if (((flags & GLOB_ALTDIRFUNC)
? (*pglob->gl_stat) (fullname, &st)
: __stat64 (fullname, &st64)) == 0)
/* We found this file to be existing. Now tell the rest
of the function to copy this name into the result. */
flags |= GLOB_NOCHECK;
nfound = 0;
}
else
{
if (pattern[0] == '\0')
{
/* This is a special case for matching directories like in
"*a/". */
names = (struct globlink *) __alloca (sizeof (struct globlink));
names->name = (char *) malloc (1);
if (names->name == NULL)
goto memory_error;
names->name[0] = '\0';
names->next = NULL;
nfound = 1;
meta = 0;
}
else
{
stream = ((flags & GLOB_ALTDIRFUNC)
? (*pglob->gl_opendir) (directory)
: (__ptr_t) opendir (directory));
if (stream == NULL)
{
if (errno != ENOTDIR
&& ((errfunc != NULL && (*errfunc) (directory, errno))
|| (flags & GLOB_ERR)))
return GLOB_ABORTED;
nfound = 0;
meta = 0;
}
else
{
int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
| ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)
#if defined _AMIGA || defined VMS
| FNM_CASEFOLD
#endif
);
nfound = 0;
flags |= GLOB_MAGCHAR;
while (1)
{
const char *name;
size_t len;
struct dirent *d = ((flags & GLOB_ALTDIRFUNC)
? (*pglob->gl_readdir) (stream)
: readdir ((DIR *) stream));
if (d == NULL)
break;
if (! REAL_DIR_ENTRY (d))
continue;
#ifdef HAVE_D_TYPE
/* If we shall match only directories use the information
provided by the dirent call if possible. */
if ((flags & GLOB_ONLYDIR)
&& d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
continue;
#endif
name = d->d_name;
if (fnmatch (pattern, name, fnm_flags) == 0)
{
struct globlink *new = (struct globlink *)
__alloca (sizeof (struct globlink));
len = NAMLEN (d);
new->name = (char *) malloc (len + 1);
if (new->name == NULL)
goto memory_error;
#ifdef HAVE_MEMPCPY
*((char *) mempcpy ((__ptr_t) new->name, name, len))
= '\0';
#else
memcpy ((__ptr_t) new->name, name, len);
new->name[len] = '\0';
#endif
new->next = names;
names = new;
++nfound;
}
}
}
}
}
if (nfound == 0 && (flags & GLOB_NOCHECK))
{
size_t len = strlen (pattern);
nfound = 1;
names = (struct globlink *) __alloca (sizeof (struct globlink));
names->next = NULL;
names->name = (char *) malloc (len + 1);
if (names->name == NULL)
goto memory_error;
#ifdef HAVE_MEMPCPY
*((char *) mempcpy (names->name, pattern, len)) = '\0';
#else
memcpy (names->name, pattern, len);
names->name[len] = '\0';
#endif
}
if (nfound != 0)
{
pglob->gl_pathv
= (char **) realloc (pglob->gl_pathv,
(pglob->gl_pathc + pglob->gl_offs + nfound + 1)
* sizeof (char *));
if (pglob->gl_pathv == NULL)
goto memory_error;
for (; names != NULL; names = names->next)
pglob->gl_pathv[pglob->gl_offs + pglob->gl_pathc++] = names->name;
pglob->gl_pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
pglob->gl_flags = flags;
}
save = errno;
if (stream != NULL)
{
if (flags & GLOB_ALTDIRFUNC)
(*pglob->gl_closedir) (stream);
else
closedir ((DIR *) stream);
}
__set_errno (save);
return nfound == 0 ? GLOB_NOMATCH : 0;
memory_error:
{
int save = errno;
if (flags & GLOB_ALTDIRFUNC)
(*pglob->gl_closedir) (stream);
else
closedir ((DIR *) stream);
__set_errno (save);
}
while (names != NULL)
{
if (names->name != NULL)
free ((__ptr_t) names->name);
names = names->next;
}
return GLOB_NOSPACE;
}
#endif /* Not ELIDE_CODE. */
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