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-rw-r--r--posix/glob.c377
1 files changed, 260 insertions, 117 deletions
diff --git a/posix/glob.c b/posix/glob.c
index 0079a15a92..6d8a891340 100644
--- a/posix/glob.c
+++ b/posix/glob.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1991-2002,2003,2004,2005,2006 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2002, 2003, 2004, 2005, 2006, 2007
+ 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
@@ -192,9 +193,15 @@ static const char *next_brace_sub (const char *begin, int flags) __THROW;
#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);
+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;
@@ -250,6 +257,9 @@ glob (pattern, flags, errfunc, pglob)
size_t dirlen;
int status;
size_t oldcount;
+ int meta;
+ int dirname_modified;
+ glob_t dirs;
if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0)
{
@@ -418,6 +428,7 @@ glob (pattern, flags, errfunc, pglob)
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
@@ -486,10 +497,32 @@ glob (pattern, flags, errfunc, pglob)
&& 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));
+ 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;
+ }
return val;
}
}
@@ -517,7 +550,9 @@ glob (pattern, flags, errfunc, pglob)
#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");
@@ -594,7 +629,10 @@ glob (pattern, flags, errfunc, pglob)
# endif
/* Now construct the full directory. */
if (dirname[1] == '\0')
- dirname = home_dir;
+ {
+ dirname = home_dir;
+ dirlen = strlen (dirname);
+ }
else
{
char *newp;
@@ -603,7 +641,9 @@ glob (pattern, flags, errfunc, pglob)
mempcpy (mempcpy (newp, home_dir, home_len),
&dirname[1], dirlen);
dirname = newp;
+ dirlen += home_len - 1;
}
+ dirname_modified = 1;
}
# if !defined _AMIGA && !defined WINDOWS32
else
@@ -611,15 +651,52 @@ glob (pattern, flags, errfunc, pglob)
char *end_name = strchr (dirname, '/');
const char *user_name;
const char *home_dir;
+ 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 (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;
}
@@ -673,6 +750,8 @@ glob (pattern, flags, errfunc, pglob)
*((char *) mempcpy (mempcpy (newp, home_dir, home_len),
end_name, rest_len)) = '\0';
dirname = newp;
+ dirlen = home_len + rest_len;
+ dirname_modified = 1;
}
else
if (flags & GLOB_TILDE_CHECK)
@@ -714,9 +793,22 @@ glob (pattern, flags, errfunc, pglob)
}
pglob->gl_pathv = new_gl_pathv;
- pglob->gl_pathv[newcount] = strdup (dirname);
- if (pglob->gl_pathv[newcount] == NULL)
- goto nospace;
+ 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;
@@ -728,14 +820,30 @@ glob (pattern, flags, errfunc, pglob)
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_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 ((flags & GLOB_ALTDIRFUNC) != 0)
{
/* Use the alternative access functions also in the recursive
@@ -748,12 +856,16 @@ glob (pattern, flags, errfunc, pglob)
}
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,
@@ -811,6 +923,7 @@ glob (pattern, flags, errfunc, pglob)
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)
{
@@ -854,10 +967,44 @@ glob (pattern, flags, errfunc, pglob)
else
{
int old_pathc = pglob->gl_pathc;
+ int orig_flags = flags;
+ 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);
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)
{
@@ -1015,15 +1162,13 @@ prefix_array (const char *dirname, char **array, size_t n)
/* 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;
+ int ret = 0;
for (p = pattern; *p != '\0'; ++p)
switch (*p)
@@ -1033,21 +1178,35 @@ __glob_pattern_p (pattern, quote)
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)
@@ -1109,7 +1268,7 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
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
@@ -1117,8 +1276,7 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
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. */
@@ -1139,119 +1297,104 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
}
else
{
- if (pattern[0] == '\0')
+ stream = ((flags & GLOB_ALTDIRFUNC)
+ ? (*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)
+ 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 (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 = ((flags & GLOB_ALTDIRFUNC)
+ ? ((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 (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 *)));
+ allocasize += size;
+ if (__libc_use_alloca (allocasize))
+ newnames = names_alloca = __alloca (size);
+ 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;
}
}
}
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