-/* Copyright (C) 1991-2002,2003,2004,2005,2006 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2015 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
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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#include <pwd.h>
+#if defined HAVE_STDINT_H || defined _LIBC
+# include <stdint.h>
+#elif !defined UINTPTR_MAX
+# define UINTPTR_MAX (~((size_t) 0))
+#endif
+
#include <errno.h>
#ifndef __set_errno
# define __set_errno(val) errno = (val)
# define GET_LOGIN_NAME_MAX() (-1)
#endif
\f
-static const char *next_brace_sub (const char *begin, int flags) __THROW;
+static const char *next_brace_sub (const char *begin, int flags) __THROWNL;
#endif /* !defined _LIBC || !defined GLOB_ONLY_P */
+#ifndef attribute_hidden
+# define attribute_hidden
+#endif
+
static int glob_in_dir (const char *pattern, const char *directory,
int flags, int (*errfunc) (const char *, int),
- glob_t *pglob);
+ glob_t *pglob, size_t alloca_used);
+extern int __glob_pattern_type (const char *pattern, int quote)
+ attribute_hidden;
#if !defined _LIBC || !defined GLOB_ONLY_P
-static int prefix_array (const char *prefix, char **array, size_t n) __THROW;
-static int collated_compare (const void *, const void *) __THROW;
+static int prefix_array (const char *prefix, char **array, size_t n) __THROWNL;
+static int collated_compare (const void *, const void *) __THROWNL;
/* Find the end of the sub-pattern in a brace expression. */
static const char *
next_brace_sub (const char *cp, int flags)
{
- unsigned int depth = 0;
+ size_t depth = 0;
while (*cp != '\0')
if ((flags & GLOB_NOESCAPE) == 0 && *cp == '\\')
{
glob_t *pglob;
{
const char *filename;
- const char *dirname;
+ char *dirname = NULL;
size_t dirlen;
int status;
size_t oldcount;
+ int meta;
+ int dirname_modified;
+ int malloc_dirname = 0;
+ glob_t dirs;
+ int retval = 0;
+#ifdef _LIBC
+ size_t alloca_used = 0;
+#endif
if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0)
{
return -1;
}
+ /* POSIX requires all slashes to be matched. This means that with
+ a trailing slash we must match only directories. */
+ if (pattern[0] && pattern[strlen (pattern) - 1] == '/')
+ flags |= GLOB_ONLYDIR;
+
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. */
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)
+ char *onealt;
+ size_t pattern_len = strlen (pattern) - 1;
+#ifdef _LIBC
+ int alloca_onealt = __libc_use_alloca (alloca_used + pattern_len);
+ if (alloca_onealt)
+ onealt = alloca_account (pattern_len, alloca_used);
+ else
+#endif
{
- if (!(flags & GLOB_APPEND))
+ onealt = (char *) malloc (pattern_len);
+ if (onealt == NULL)
{
- pglob->gl_pathc = 0;
- pglob->gl_pathv = NULL;
+ if (!(flags & GLOB_APPEND))
+ {
+ pglob->gl_pathc = 0;
+ pglob->gl_pathv = NULL;
+ }
+ return GLOB_NOSPACE;
}
- return GLOB_NOSPACE;
}
-#endif
/* We know the prefix for all sub-patterns. */
alt_start = mempcpy (onealt, pattern, begin - pattern);
if (next == NULL)
{
/* It is an illegal expression. */
-#ifndef __GNUC__
- free (onealt);
+ illegal_brace:
+#ifdef _LIBC
+ if (__glibc_unlikely (!alloca_onealt))
#endif
+ free (onealt);
return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
}
{
rest = next_brace_sub (rest + 1, flags);
if (rest == NULL)
- {
- /* It is an illegal expression. */
-#ifndef __GNUC__
- free (onealt);
-#endif
- return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
- }
+ /* It is an illegal expression. */
+ goto illegal_brace;
}
/* Please note that we now can be sure the brace expression
is well-formed. */
/* If we got an error, return it. */
if (result && result != GLOB_NOMATCH)
{
-#ifndef __GNUC__
- free (onealt);
+#ifdef _LIBC
+ if (__glibc_unlikely (!alloca_onealt))
#endif
+ free (onealt);
if (!(flags & GLOB_APPEND))
{
globfree (pglob);
assert (next != NULL);
}
-#ifndef __GNUC__
- free (onealt);
+#ifdef _LIBC
+ if (__glibc_unlikely (!alloca_onealt))
#endif
+ free (onealt);
if (pglob->gl_pathc != firstc)
/* We found some entries. */
}
}
+ if (!(flags & GLOB_APPEND))
+ {
+ pglob->gl_pathc = 0;
+ if (!(flags & GLOB_DOOFFS))
+ pglob->gl_pathv = NULL;
+ else
+ {
+ size_t i;
+
+ if (pglob->gl_offs >= ~((size_t) 0) / sizeof (char *))
+ return GLOB_NOSPACE;
+
+ 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;
+
/* Find the filename. */
filename = strrchr (pattern, '/');
#if defined __MSDOS__ || defined WINDOWS32
if (filename == NULL)
filename = strchr (pattern, ':');
#endif /* __MSDOS__ || WINDOWS32 */
+ dirname_modified = 0;
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;
+ dirname = (char *) pattern;
dirlen = strlen (pattern);
/* Set FILENAME to NULL as a special flag. This is ugly but
}
else
{
+ if (__glibc_unlikely (pattern[0] == '\0'))
+ {
+ dirs.gl_pathv = NULL;
+ goto no_matches;
+ }
+
filename = pattern;
#ifdef _AMIGA
- dirname = "";
+ dirname = (char *) "";
#else
- dirname = ".";
+ dirname = (char *) ".";
#endif
dirlen = 0;
}
}
- else if (filename == pattern)
+ else if (filename == pattern
+ || (filename == pattern + 1 && pattern[0] == '\\'
+ && (flags & GLOB_NOESCAPE) == 0))
{
- /* "/pattern". */
- dirname = "/";
+ /* "/pattern" or "\\/pattern". */
+ dirname = (char *) "/";
dirlen = 1;
++filename;
}
from "d:/", since "d:" and "d:/" are not the same.*/
}
#endif
- newp = (char *) __alloca (dirlen + 1);
+#ifdef _LIBC
+ if (__libc_use_alloca (alloca_used + dirlen + 1))
+ newp = alloca_account (dirlen + 1, alloca_used);
+ else
+#endif
+ {
+ newp = malloc (dirlen + 1);
+ if (newp == NULL)
+ return GLOB_NOSPACE;
+ malloc_dirname = 1;
+ }
*((char *) mempcpy (newp, pattern, dirlen)) = '\0';
dirname = newp;
++filename;
if (filename[0] == '\0'
#if defined __MSDOS__ || defined WINDOWS32
- && dirname[dirlen - 1] != ':'
+ && dirname[dirlen - 1] != ':'
&& (dirlen < 3 || dirname[dirlen - 2] != ':'
|| dirname[dirlen - 1] != '/')
#endif
&& dirlen > 1)
/* "pattern/". Expand "pattern", appending slashes. */
{
+ int orig_flags = flags;
+ if (!(flags & GLOB_NOESCAPE) && dirname[dirlen - 1] == '\\')
+ {
+ /* "pattern\\/". Remove the final backslash if it hasn't
+ been quoted. */
+ char *p = (char *) &dirname[dirlen - 1];
+
+ while (p > dirname && p[-1] == '\\') --p;
+ if ((&dirname[dirlen] - p) & 1)
+ {
+ *(char *) &dirname[--dirlen] = '\0';
+ flags &= ~(GLOB_NOCHECK | GLOB_NOMAGIC);
+ }
+ }
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
- {
- size_t 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;
+ else if (val == GLOB_NOMATCH && flags != orig_flags)
+ {
+ /* Make sure globfree (&dirs); is a nop. */
+ dirs.gl_pathv = NULL;
+ flags = orig_flags;
+ oldcount = pglob->gl_pathc + pglob->gl_offs;
+ goto no_matches;
+ }
+ retval = val;
+ goto out;
}
}
- oldcount = pglob->gl_pathc + pglob->gl_offs;
-
#ifndef VMS
if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && dirname[0] == '~')
{
- if (dirname[1] == '\0' || dirname[1] == '/')
+ if (dirname[1] == '\0' || dirname[1] == '/'
+ || (!(flags & GLOB_NOESCAPE) && dirname[1] == '\\'
+ && (dirname[2] == '\0' || dirname[2] == '/')))
{
/* Look up home directory. */
- const char *home_dir = getenv ("HOME");
+ char *home_dir = getenv ("HOME");
+ int malloc_home_dir = 0;
# 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 */
+ home_dir = "c:/users/default"; /* poor default */
# else
if (home_dir == NULL || home_dir[0] == '\0')
{
/* `sysconf' does not support _SC_LOGIN_NAME_MAX. Try
a moderate value. */
buflen = 20;
- name = (char *) __alloca (buflen);
+ name = alloca_account (buflen, alloca_used);
success = getlogin_r (name, buflen) == 0;
if (success)
long int pwbuflen = GETPW_R_SIZE_MAX ();
char *pwtmpbuf;
struct passwd pwbuf;
+ int malloc_pwtmpbuf = 0;
int save = errno;
# ifndef _LIBC
Try a moderate value. */
pwbuflen = 1024;
# endif
- pwtmpbuf = (char *) __alloca (pwbuflen);
+ if (__libc_use_alloca (alloca_used + pwbuflen))
+ pwtmpbuf = alloca_account (pwbuflen, alloca_used);
+ else
+ {
+ pwtmpbuf = malloc (pwbuflen);
+ if (pwtmpbuf == NULL)
+ {
+ retval = GLOB_NOSPACE;
+ goto out;
+ }
+ malloc_pwtmpbuf = 1;
+ }
while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p)
!= 0)
p = NULL;
break;
}
-# ifdef _LIBC
- pwtmpbuf = extend_alloca (pwtmpbuf, pwbuflen,
+
+ if (!malloc_pwtmpbuf
+ && __libc_use_alloca (alloca_used
+ + 2 * pwbuflen))
+ pwtmpbuf = extend_alloca_account (pwtmpbuf, pwbuflen,
+ 2 * pwbuflen,
+ alloca_used);
+ else
+ {
+ char *newp = realloc (malloc_pwtmpbuf
+ ? pwtmpbuf : NULL,
2 * pwbuflen);
-# else
- pwbuflen *= 2;
- pwtmpbuf = (char *) __alloca (pwbuflen);
-# endif
+ if (newp == NULL)
+ {
+ if (__glibc_unlikely (malloc_pwtmpbuf))
+ free (pwtmpbuf);
+ retval = GLOB_NOSPACE;
+ goto out;
+ }
+ pwtmpbuf = newp;
+ pwbuflen = 2 * pwbuflen;
+ malloc_pwtmpbuf = 1;
+ }
__set_errno (save);
}
# else
p = getpwnam (name);
# endif
if (p != NULL)
- home_dir = p->pw_dir;
+ {
+ if (!malloc_pwtmpbuf)
+ home_dir = p->pw_dir;
+ else
+ {
+ size_t home_dir_len = strlen (p->pw_dir) + 1;
+ if (__libc_use_alloca (alloca_used + home_dir_len))
+ home_dir = alloca_account (home_dir_len,
+ alloca_used);
+ else
+ {
+ home_dir = malloc (home_dir_len);
+ if (home_dir == NULL)
+ {
+ free (pwtmpbuf);
+ retval = GLOB_NOSPACE;
+ goto out;
+ }
+ malloc_home_dir = 1;
+ }
+ memcpy (home_dir, p->pw_dir, home_dir_len);
+
+ free (pwtmpbuf);
+ }
+ }
}
}
if (home_dir == NULL || home_dir[0] == '\0')
{
if (flags & GLOB_TILDE_CHECK)
- return GLOB_NOMATCH;
+ {
+ if (__glibc_unlikely (malloc_home_dir))
+ free (home_dir);
+ retval = GLOB_NOMATCH;
+ goto out;
+ }
else
- home_dir = "~"; /* No luck. */
+ home_dir = (char *) "~"; /* No luck. */
}
# endif /* WINDOWS32 */
# endif
/* Now construct the full directory. */
if (dirname[1] == '\0')
- dirname = home_dir;
+ {
+ if (__glibc_unlikely (malloc_dirname))
+ free (dirname);
+
+ dirname = home_dir;
+ dirlen = strlen (dirname);
+ malloc_dirname = malloc_home_dir;
+ }
else
{
char *newp;
size_t home_len = strlen (home_dir);
- newp = (char *) __alloca (home_len + dirlen);
+ int use_alloca = __libc_use_alloca (alloca_used
+ + home_len + dirlen);
+ if (use_alloca)
+ newp = alloca_account (home_len + dirlen, alloca_used);
+ else
+ {
+ newp = malloc (home_len + dirlen);
+ if (newp == NULL)
+ {
+ if (__glibc_unlikely (malloc_home_dir))
+ free (home_dir);
+ retval = GLOB_NOSPACE;
+ goto out;
+ }
+ }
+
mempcpy (mempcpy (newp, home_dir, home_len),
&dirname[1], dirlen);
+
+ if (__glibc_unlikely (malloc_dirname))
+ free (dirname);
+
dirname = newp;
+ dirlen += home_len - 1;
+ malloc_dirname = !use_alloca;
}
+ dirname_modified = 1;
}
# if !defined _AMIGA && !defined WINDOWS32
else
{
char *end_name = strchr (dirname, '/');
- const char *user_name;
- const char *home_dir;
+ char *user_name;
+ int malloc_user_name = 0;
+ char *unescape = NULL;
+ if (!(flags & GLOB_NOESCAPE))
+ {
+ if (end_name == NULL)
+ {
+ unescape = strchr (dirname, '\\');
+ if (unescape)
+ end_name = strchr (unescape, '\0');
+ }
+ else
+ unescape = memchr (dirname, '\\', end_name - dirname);
+ }
if (end_name == NULL)
user_name = dirname + 1;
else
{
char *newp;
- newp = (char *) __alloca (end_name - dirname);
- *((char *) mempcpy (newp, dirname + 1, end_name - dirname))
- = '\0';
+ if (__libc_use_alloca (alloca_used + (end_name - dirname)))
+ newp = alloca_account (end_name - dirname, alloca_used);
+ else
+ {
+ newp = malloc (end_name - dirname);
+ if (newp == NULL)
+ {
+ retval = GLOB_NOSPACE;
+ goto out;
+ }
+ malloc_user_name = 1;
+ }
+ if (unescape != NULL)
+ {
+ char *p = mempcpy (newp, dirname + 1,
+ unescape - dirname - 1);
+ char *q = unescape;
+ while (*q != '\0')
+ {
+ if (*q == '\\')
+ {
+ if (q[1] == '\0')
+ {
+ /* "~fo\\o\\" unescape to user_name "foo\\",
+ but "~fo\\o\\/" unescape to user_name
+ "foo". */
+ if (filename == NULL)
+ *p++ = '\\';
+ break;
+ }
+ ++q;
+ }
+ *p++ = *q++;
+ }
+ *p = '\0';
+ }
+ else
+ *((char *) mempcpy (newp, dirname + 1, end_name - dirname))
+ = '\0';
user_name = newp;
}
# if defined HAVE_GETPWNAM_R || defined _LIBC
long int buflen = GETPW_R_SIZE_MAX ();
char *pwtmpbuf;
+ int malloc_pwtmpbuf = 0;
struct passwd pwbuf;
int save = errno;
moderate value. */
buflen = 1024;
# endif
- pwtmpbuf = (char *) __alloca (buflen);
+ if (__libc_use_alloca (alloca_used + buflen))
+ pwtmpbuf = alloca_account (buflen, alloca_used);
+ else
+ {
+ pwtmpbuf = malloc (buflen);
+ if (pwtmpbuf == NULL)
+ {
+ nomem_getpw:
+ if (__glibc_unlikely (malloc_user_name))
+ free (user_name);
+ retval = GLOB_NOSPACE;
+ goto out;
+ }
+ malloc_pwtmpbuf = 1;
+ }
while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0)
{
p = NULL;
break;
}
-# ifdef _LIBC
- pwtmpbuf = extend_alloca (pwtmpbuf, buflen, 2 * buflen);
-# else
- buflen *= 2;
- pwtmpbuf = __alloca (buflen);
-# endif
+ if (!malloc_pwtmpbuf
+ && __libc_use_alloca (alloca_used + 2 * buflen))
+ pwtmpbuf = extend_alloca_account (pwtmpbuf, buflen,
+ 2 * buflen, alloca_used);
+ else
+ {
+ char *newp = realloc (malloc_pwtmpbuf ? pwtmpbuf : NULL,
+ 2 * buflen);
+ if (newp == NULL)
+ {
+ if (__glibc_unlikely (malloc_pwtmpbuf))
+ free (pwtmpbuf);
+ goto nomem_getpw;
+ }
+ pwtmpbuf = newp;
+ malloc_pwtmpbuf = 1;
+ }
__set_errno (save);
}
# else
p = getpwnam (user_name);
# endif
+
+ if (__glibc_unlikely (malloc_user_name))
+ free (user_name);
+
+ /* If we found a home directory use this. */
if (p != NULL)
- home_dir = p->pw_dir;
+ {
+ size_t home_len = strlen (p->pw_dir);
+ size_t rest_len = end_name == NULL ? 0 : strlen (end_name);
+
+ if (__glibc_unlikely (malloc_dirname))
+ free (dirname);
+ malloc_dirname = 0;
+
+ if (__libc_use_alloca (alloca_used + home_len + rest_len + 1))
+ dirname = alloca_account (home_len + rest_len + 1,
+ alloca_used);
+ else
+ {
+ dirname = malloc (home_len + rest_len + 1);
+ if (dirname == NULL)
+ {
+ if (__glibc_unlikely (malloc_pwtmpbuf))
+ free (pwtmpbuf);
+ retval = GLOB_NOSPACE;
+ goto out;
+ }
+ malloc_dirname = 1;
+ }
+ *((char *) mempcpy (mempcpy (dirname, p->pw_dir, home_len),
+ end_name, rest_len)) = '\0';
+
+ dirlen = home_len + rest_len;
+ dirname_modified = 1;
+
+ if (__glibc_unlikely (malloc_pwtmpbuf))
+ free (pwtmpbuf);
+ }
else
- home_dir = NULL;
+ {
+ if (__glibc_unlikely (malloc_pwtmpbuf))
+ free (pwtmpbuf);
+
+ if (flags & GLOB_TILDE_CHECK)
+ /* We have to regard it as an error if we cannot find the
+ home directory. */
+ return GLOB_NOMATCH;
+ }
}
- /* 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);
- *((char *) mempcpy (mempcpy (newp, home_dir, home_len),
- end_name, rest_len)) = '\0';
- 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. */
}
/* Return the directory if we don't check for error or if it exists. */
if ((flags & GLOB_NOCHECK)
- || (((flags & GLOB_ALTDIRFUNC)
+ || (((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0))
? ((*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;
+ size_t newcount = pglob->gl_pathc + pglob->gl_offs;
char **new_gl_pathv;
- new_gl_pathv
- = (char **) realloc (pglob->gl_pathv,
- (newcount + 1 + 1) * sizeof (char *));
- if (new_gl_pathv == NULL)
+ if (newcount > UINTPTR_MAX - (1 + 1)
+ || newcount + 1 + 1 > ~((size_t) 0) / sizeof (char *))
{
nospace:
free (pglob->gl_pathv);
pglob->gl_pathc = 0;
return GLOB_NOSPACE;
}
- pglob->gl_pathv = new_gl_pathv;
- pglob->gl_pathv[newcount] = strdup (dirname);
- if (pglob->gl_pathv[newcount] == NULL)
+ new_gl_pathv
+ = (char **) realloc (pglob->gl_pathv,
+ (newcount + 1 + 1) * sizeof (char *));
+ if (new_gl_pathv == NULL)
goto nospace;
+ pglob->gl_pathv = new_gl_pathv;
+
+ if (flags & GLOB_MARK)
+ {
+ char *p;
+ pglob->gl_pathv[newcount] = malloc (dirlen + 2);
+ if (pglob->gl_pathv[newcount] == NULL)
+ goto nospace;
+ p = mempcpy (pglob->gl_pathv[newcount], dirname, dirlen);
+ p[0] = '/';
+ p[1] = '\0';
+ }
+ else
+ {
+ pglob->gl_pathv[newcount] = strdup (dirname);
+ if (pglob->gl_pathv[newcount] == NULL)
+ goto nospace;
+ }
pglob->gl_pathv[++newcount] = NULL;
++pglob->gl_pathc;
pglob->gl_flags = flags;
return GLOB_NOMATCH;
}
- if (__glob_pattern_p (dirname, !(flags & GLOB_NOESCAPE)))
+ meta = __glob_pattern_type (dirname, !(flags & GLOB_NOESCAPE));
+ /* meta is 1 if correct glob pattern containing metacharacters.
+ If meta has bit (1 << 2) set, it means there was an unterminated
+ [ which we handle the same, using fnmatch. Broken unterminated
+ pattern bracket expressions ought to be rare enough that it is
+ not worth special casing them, fnmatch will do the right thing. */
+ if (meta & 5)
{
/* 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;
size_t i;
- if ((flags & GLOB_ALTDIRFUNC) != 0)
+ if (!(flags & GLOB_NOESCAPE) && dirlen > 0 && dirname[dirlen - 1] == '\\')
+ {
+ /* "foo\\/bar". Remove the final backslash from dirname
+ if it has not been quoted. */
+ char *p = (char *) &dirname[dirlen - 1];
+
+ while (p > dirname && p[-1] == '\\') --p;
+ if ((&dirname[dirlen] - p) & 1)
+ *(char *) &dirname[--dirlen] = '\0';
+ }
+
+ if (__glibc_unlikely ((flags & GLOB_ALTDIRFUNC) != 0))
{
/* Use the alternative access functions also in the recursive
call. */
}
status = glob (dirname,
- ((flags & (GLOB_ERR | GLOB_NOCHECK | GLOB_NOESCAPE
+ ((flags & (GLOB_ERR | GLOB_NOESCAPE
| GLOB_ALTDIRFUNC))
| GLOB_NOSORT | GLOB_ONLYDIR),
errfunc, &dirs);
if (status != 0)
- return status;
+ {
+ if ((flags & GLOB_NOCHECK) == 0 || status != GLOB_NOMATCH)
+ return status;
+ goto no_matches;
+ }
/* 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;
+ size_t old_pathc;
#ifdef SHELL
{
status = glob_in_dir (filename, dirs.gl_pathv[i],
((flags | GLOB_APPEND)
& ~(GLOB_NOCHECK | GLOB_NOMAGIC)),
- errfunc, pglob);
+ errfunc, pglob, alloca_used);
if (status == GLOB_NOMATCH)
/* No matches in this directory. Try the next. */
continue;
flag was set we must return the input pattern itself. */
if (pglob->gl_pathc + pglob->gl_offs == oldcount)
{
+ no_matches:
/* No matches. */
if (flags & GLOB_NOCHECK)
{
- int newcount = pglob->gl_pathc + pglob->gl_offs;
+ size_t newcount = pglob->gl_pathc + pglob->gl_offs;
char **new_gl_pathv;
- new_gl_pathv = (char **) realloc (pglob->gl_pathv,
- (newcount + 2)
- * sizeof (char *));
- if (new_gl_pathv == NULL)
+ if (newcount > UINTPTR_MAX - 2
+ || newcount + 2 > ~((size_t) 0) / sizeof (char *))
{
+ nospace2:
globfree (&dirs);
return GLOB_NOSPACE;
}
+
+ new_gl_pathv = (char **) realloc (pglob->gl_pathv,
+ (newcount + 2)
+ * sizeof (char *));
+ if (new_gl_pathv == NULL)
+ goto nospace2;
pglob->gl_pathv = new_gl_pathv;
pglob->gl_pathv[newcount] = __strdup (pattern);
}
else
{
- int old_pathc = pglob->gl_pathc;
+ size_t old_pathc = pglob->gl_pathc;
+ int orig_flags = flags;
- status = glob_in_dir (filename, dirname, flags, errfunc, pglob);
+ if (meta & 2)
+ {
+ char *p = strchr (dirname, '\\'), *q;
+ /* We need to unescape the dirname string. It is certainly
+ allocated by alloca, as otherwise filename would be NULL
+ or dirname wouldn't contain backslashes. */
+ q = p;
+ do
+ {
+ if (*p == '\\')
+ {
+ *q = *++p;
+ --dirlen;
+ }
+ else
+ *q = *p;
+ ++q;
+ }
+ while (*p++ != '\0');
+ dirname_modified = 1;
+ }
+ if (dirname_modified)
+ flags &= ~(GLOB_NOCHECK | GLOB_NOMAGIC);
+ status = glob_in_dir (filename, dirname, flags, errfunc, pglob,
+ alloca_used);
if (status != 0)
- return status;
+ {
+ if (status == GLOB_NOMATCH && flags != orig_flags
+ && pglob->gl_pathc + pglob->gl_offs == oldcount)
+ {
+ /* Make sure globfree (&dirs); is a nop. */
+ dirs.gl_pathv = NULL;
+ flags = orig_flags;
+ goto no_matches;
+ }
+ return status;
+ }
if (dirlen > 0)
{
struct_stat64 st64;
for (i = oldcount; i < pglob->gl_pathc + pglob->gl_offs; ++i)
- if (((flags & GLOB_ALTDIRFUNC)
+ if ((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
? ((*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;
+ size_t len = strlen (pglob->gl_pathv[i]) + 2;
char *new = realloc (pglob->gl_pathv[i], len);
- if (new == NULL)
+ if (new == NULL)
{
globfree (pglob);
pglob->gl_pathc = 0;
sizeof (char *), collated_compare);
}
- return 0;
+ out:
+ if (__glibc_unlikely (malloc_dirname))
+ free (dirname);
+
+ return retval;
}
#if defined _LIBC && !defined glob
libc_hidden_def (glob)
/* Free storage allocated in PGLOB by a previous `glob' call. */
void
globfree (pglob)
- register glob_t *pglob;
+ glob_t *pglob;
{
if (pglob->gl_pathv != NULL)
{
size_t i;
for (i = 0; i < pglob->gl_pathc; ++i)
- if (pglob->gl_pathv[pglob->gl_offs + i] != NULL)
- free (pglob->gl_pathv[pglob->gl_offs + i]);
+ free (pglob->gl_pathv[pglob->gl_offs + i]);
free (pglob->gl_pathv);
pglob->gl_pathv = NULL;
}
static int
prefix_array (const char *dirname, char **array, size_t n)
{
- register size_t i;
+ size_t i;
size_t dirlen = strlen (dirname);
#if defined __MSDOS__ || defined WINDOWS32
int sep_char = '/';
/* 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)
+__glob_pattern_type (pattern, quote)
const char *pattern;
int quote;
{
- register const char *p;
- int open = 0;
+ const char *p;
+ int ret = 0;
for (p = pattern; *p != '\0'; ++p)
switch (*p)
return 1;
case '\\':
- if (quote && p[1] != '\0')
- ++p;
+ if (quote)
+ {
+ if (p[1] != '\0')
+ ++p;
+ ret |= 2;
+ }
break;
case '[':
- open = 1;
+ ret |= 4;
break;
case ']':
- if (open)
+ if (ret & 4)
return 1;
break;
}
- return 0;
+ return ret;
+}
+
+/* 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;
+{
+ return __glob_pattern_type (pattern, quote) == 1;
}
# ifdef _LIBC
weak_alias (__glob_pattern_p, glob_pattern_p)
allocated with alloca to be recycled. */
#if !defined _LIBC || !defined GLOB_ONLY_P
static int
-link_exists_p (const char *dir, size_t dirlen, const char *fname,
- glob_t *pglob, int flags)
+__attribute_noinline__
+link_exists2_p (const char *dir, size_t dirlen, const char *fname,
+ glob_t *pglob
+# ifndef _LIBC
+ , int flags
+# endif
+ )
{
size_t fnamelen = strlen (fname);
char *fullname = (char *) __alloca (dirlen + 1 + fnamelen + 1);
struct stat st;
+# ifndef _LIBC
struct_stat64 st64;
+# endif
mempcpy (mempcpy (mempcpy (fullname, dir, dirlen), "/", 1),
fname, fnamelen + 1);
- return (((flags & GLOB_ALTDIRFUNC)
+# ifdef _LIBC
+ return (*pglob->gl_stat) (fullname, &st) == 0;
+# else
+ return ((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
? (*pglob->gl_stat) (fullname, &st)
: __stat64 (fullname, &st64)) == 0);
+# endif
}
+# ifdef _LIBC
+# define link_exists_p(dfd, dirname, dirnamelen, fname, pglob, flags) \
+ (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0) \
+ ? link_exists2_p (dirname, dirnamelen, fname, pglob) \
+ : ({ struct stat64 st64; \
+ __fxstatat64 (_STAT_VER, dfd, fname, &st64, 0) == 0; }))
+# else
+# define link_exists_p(dfd, dirname, dirnamelen, fname, pglob, flags) \
+ link_exists2_p (dirname, dirnamelen, fname, pglob, flags)
+# endif
#endif
static int
glob_in_dir (const char *pattern, const char *directory, int flags,
int (*errfunc) (const char *, int),
- glob_t *pglob)
+ glob_t *pglob, size_t alloca_used)
{
size_t dirlen = strlen (directory);
void *stream = NULL;
struct globnames *names = &init_names;
struct globnames *names_alloca = &init_names;
size_t nfound = 0;
- size_t allocasize = sizeof (init_names);
size_t cur = 0;
int meta;
int save;
+ alloca_used += sizeof (init_names);
+
init_names.next = NULL;
init_names.count = INITIAL_COUNT;
- meta = __glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE));
+ meta = __glob_pattern_type (pattern, !(flags & GLOB_NOESCAPE));
if (meta == 0 && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
{
/* We need not do any tests. The PATTERN contains no meta
result will always contain exactly one name. */
flags |= GLOB_NOCHECK;
}
- else if (meta == 0 &&
- ((flags & GLOB_NOESCAPE) || strchr (pattern, '\\') == NULL))
+ else if (meta == 0)
{
/* Since we use the normal file functions we can also use stat()
to verify the file is there. */
- struct stat st;
- struct_stat64 st64;
+ union
+ {
+ struct stat st;
+ struct_stat64 st64;
+ } ust;
size_t patlen = strlen (pattern);
- char *fullname = (char *) __alloca (dirlen + 1 + patlen + 1);
+ int alloca_fullname = __libc_use_alloca (alloca_used
+ + dirlen + 1 + patlen + 1);
+ char *fullname;
+ if (alloca_fullname)
+ fullname = alloca_account (dirlen + 1 + patlen + 1, alloca_used);
+ else
+ {
+ fullname = malloc (dirlen + 1 + patlen + 1);
+ if (fullname == NULL)
+ return GLOB_NOSPACE;
+ }
mempcpy (mempcpy (mempcpy (fullname, directory, dirlen),
"/", 1),
pattern, patlen + 1);
- if (((flags & GLOB_ALTDIRFUNC)
- ? (*pglob->gl_stat) (fullname, &st)
- : __stat64 (fullname, &st64)) == 0)
+ if ((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
+ ? (*pglob->gl_stat) (fullname, &ust.st)
+ : __stat64 (fullname, &ust.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;
+
+ if (__glibc_unlikely (!alloca_fullname))
+ free (fullname);
}
else
{
- if (pattern[0] == '\0')
+ stream = (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
+ ? (*pglob->gl_opendir) (directory)
+ : opendir (directory));
+ if (stream == NULL)
{
- /* This is a special case for matching directories like in
- "*a/". */
- names->name[cur] = (char *) malloc (1);
- if (names->name[cur] == NULL)
- goto memory_error;
- *names->name[cur++] = '\0';
- nfound = 1;
- meta = 0;
+ if (errno != ENOTDIR
+ && ((errfunc != NULL && (*errfunc) (directory, errno))
+ || (flags & GLOB_ERR)))
+ return GLOB_ABORTED;
}
else
{
- stream = ((flags & GLOB_ALTDIRFUNC)
- ? (*pglob->gl_opendir) (directory)
- : opendir (directory));
- if (stream == NULL)
- {
- if (errno != ENOTDIR
- && ((errfunc != NULL && (*errfunc) (directory, errno))
- || (flags & GLOB_ERR)))
- return GLOB_ABORTED;
- meta = 0;
- }
- else
- {
- int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
- | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)
+#ifdef _LIBC
+ int dfd = (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
+ ? -1 : dirfd ((DIR *) stream));
+#endif
+ int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
+ | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)
#if defined _AMIGA || defined VMS
- | FNM_CASEFOLD
+ | FNM_CASEFOLD
#endif
- );
- flags |= GLOB_MAGCHAR;
+ );
+ flags |= GLOB_MAGCHAR;
- while (1)
- {
- const char *name;
- size_t len;
+ while (1)
+ {
+ const char *name;
+ size_t len;
#if defined _LIBC && !defined COMPILE_GLOB64
- struct dirent64 *d;
- union
- {
- struct dirent64 d64;
- char room [offsetof (struct dirent64, d_name[0])
- + NAME_MAX + 1];
- }
- d64buf;
+ struct dirent64 *d;
+ union
+ {
+ struct dirent64 d64;
+ char room [offsetof (struct dirent64, d_name[0])
+ + NAME_MAX + 1];
+ }
+ d64buf;
- if (flags & GLOB_ALTDIRFUNC)
+ if (__glibc_unlikely (flags & GLOB_ALTDIRFUNC))
+ {
+ struct dirent *d32 = (*pglob->gl_readdir) (stream);
+ if (d32 != NULL)
{
- struct dirent *d32 = (*pglob->gl_readdir) (stream);
- if (d32 != NULL)
- {
- CONVERT_DIRENT_DIRENT64 (&d64buf.d64, d32);
- d = &d64buf.d64;
- }
- else
- d = NULL;
+ CONVERT_DIRENT_DIRENT64 (&d64buf.d64, d32);
+ d = &d64buf.d64;
}
else
- d = __readdir64 (stream);
+ d = NULL;
+ }
+ else
+ d = __readdir64 (stream);
#else
- struct dirent *d = ((flags & GLOB_ALTDIRFUNC)
- ? ((struct dirent *)
- (*pglob->gl_readdir) (stream))
- : __readdir (stream));
+ struct dirent *d = (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
+ ? ((struct dirent *)
+ (*pglob->gl_readdir) (stream))
+ : __readdir (stream));
#endif
- if (d == NULL)
- break;
- if (! REAL_DIR_ENTRY (d))
- continue;
+ if (d == NULL)
+ break;
+ if (! REAL_DIR_ENTRY (d))
+ continue;
- /* If we shall match only directories use the information
- provided by the dirent call if possible. */
- if ((flags & GLOB_ONLYDIR) && !DIRENT_MIGHT_BE_DIR (d))
- continue;
+ /* If we shall match only directories use the information
+ provided by the dirent call if possible. */
+ if ((flags & GLOB_ONLYDIR) && !DIRENT_MIGHT_BE_DIR (d))
+ continue;
- name = d->d_name;
+ name = d->d_name;
- if (fnmatch (pattern, name, fnm_flags) == 0)
+ if (fnmatch (pattern, name, fnm_flags) == 0)
+ {
+ /* If the file we found is a symlink we have to
+ make sure the target file exists. */
+ if (!DIRENT_MIGHT_BE_SYMLINK (d)
+ || link_exists_p (dfd, directory, dirlen, name, pglob,
+ flags))
{
- /* If the file we found is a symlink we have to
- make sure the target file exists. */
- if (!DIRENT_MIGHT_BE_SYMLINK (d)
- || link_exists_p (directory, dirlen, name, pglob,
- flags))
+ if (cur == names->count)
{
- if (cur == names->count)
- {
- struct globnames *newnames;
- size_t count = names->count * 2;
- size_t size = (sizeof (struct globnames)
- + ((count - INITIAL_COUNT)
- * sizeof (char *)));
- allocasize += size;
- if (__libc_use_alloca (allocasize))
- newnames = names_alloca = __alloca (size);
- else if ((newnames = malloc (size))
- == NULL)
- goto memory_error;
- newnames->count = count;
- newnames->next = names;
- names = newnames;
- cur = 0;
- }
- len = NAMLEN (d);
- names->name[cur] = (char *) malloc (len + 1);
- if (names->name[cur] == NULL)
+ struct globnames *newnames;
+ size_t count = names->count * 2;
+ size_t size = (sizeof (struct globnames)
+ + ((count - INITIAL_COUNT)
+ * sizeof (char *)));
+ if (__libc_use_alloca (alloca_used + size))
+ newnames = names_alloca
+ = alloca_account (size, alloca_used);
+ else if ((newnames = malloc (size))
+ == NULL)
goto memory_error;
- *((char *) mempcpy (names->name[cur++], name, len))
- = '\0';
- ++nfound;
+ newnames->count = count;
+ newnames->next = names;
+ names = newnames;
+ cur = 0;
}
+ len = NAMLEN (d);
+ names->name[cur] = (char *) malloc (len + 1);
+ if (names->name[cur] == NULL)
+ goto memory_error;
+ *((char *) mempcpy (names->name[cur++], name, len))
+ = '\0';
+ ++nfound;
}
}
}
{
result = 0;
+ if (pglob->gl_pathc > UINTPTR_MAX - pglob->gl_offs
+ || pglob->gl_pathc + pglob->gl_offs > UINTPTR_MAX - nfound
+ || pglob->gl_pathc + pglob->gl_offs + nfound > UINTPTR_MAX - 1
+ || (pglob->gl_pathc + pglob->gl_offs + nfound + 1
+ > UINTPTR_MAX / sizeof (char *)))
+ goto memory_error;
+
char **new_gl_pathv;
new_gl_pathv
= (char **) realloc (pglob->gl_pathv,
for (size_t i = 0; i < cur; ++i)
free (names->name[i]);
names = names->next;
+ /* NB: we will not leak memory here if we exit without
+ freeing the current block assigned to OLD. At least
+ the very first block is always allocated on the stack
+ and this is the block assigned to OLD here. */
if (names == NULL)
- break;
+ {
+ assert (old == &init_names);
+ break;
+ }
cur = names->count;
if (old == names_alloca)
names_alloca = names;
new_gl_pathv[pglob->gl_offs + pglob->gl_pathc++]
= names->name[i];
names = names->next;
+ /* NB: we will not leak memory here if we exit without
+ freeing the current block assigned to OLD. At least
+ the very first block is always allocated on the stack
+ and this is the block assigned to OLD here. */
if (names == NULL)
- break;
+ {
+ assert (old == &init_names);
+ break;
+ }
cur = names->count;
if (old == names_alloca)
names_alloca = names;
if (stream != NULL)
{
save = errno;
- if (flags & GLOB_ALTDIRFUNC)
+ if (__glibc_unlikely (flags & GLOB_ALTDIRFUNC))
(*pglob->gl_closedir) (stream);
else
closedir (stream);
projects / platform / upstream / glibc.git / blobdiff