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2001-11-09  Ulrich Drepper  <drepper@redhat.com>

	* elf/dl-minimal.c (realloc): Handle NULL for first parameter
	correctly.
	* elf/dl-load.c (is_dst): New function.
	(_dl_dst_count): Use is_dst to check for DST variable.
	(_dl_dst_substitute): Likewise.
This commit is contained in:
Ulrich Drepper 2001-11-10 03:28:35 +00:00
parent d252c4796b
commit 6d5d3ae3d6
2 changed files with 42 additions and 35 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2001-11-09 Ulrich Drepper <drepper@redhat.com>
* elf/dl-minimal.c (realloc): Handle NULL for first parameter
correctly.
* elf/dl-load.c (is_dst): New function.
(_dl_dst_count): Use is_dst to check for DST variable.
(_dl_dst_substitute): Likewise.
2001-11-09 Roland McGrath <roland@frob.com>
Hurd/PowerPC port contributed by Peter Bruin <pjbruin@dds.nl>.

69
elf/dl-load.c
View File

@ -170,6 +170,30 @@ local_strdup (const char *s)
}
static size_t
is_dst (const char *start, const char *name, const char *str, size_t cmplen, int is_path,
int secure)
{
size_t len;
if (strncmp (name, str, cmplen) == 0)
len = cmplen + 1;
else if (strncmp (name, str + 1, cmplen - 2) == 0
&& (name[cmplen - 2] == '\0' || name[cmplen - 2] == '/'
|| (is_path && name[cmplen - 2] == ':')))
len = cmplen - 1;
else
return 0;
if (__builtin_expect (secure, 0)
&& ((name[len - 1] != '\0' && (!is_path || name[len - 1] != ':'))
|| (name != start + 1 && (!is_path || name[-2] != ':'))))
return 0;
return len;
}
size_t
_dl_dst_count (const char *name, int is_path)
{
@ -186,23 +210,10 @@ _dl_dst_count (const char *name, int is_path)
Note that it is no bug that the string in the second and
fourth `strncmp' call is longer than the sequence which is
actually tested. */
if (((strncmp (&name[1], "{ORIGIN}", 8) == 0 && (len = 9) != 0)
|| (strncmp (&name[1], "{ORIGIN}" + 1, 6) == 0
&& (name[7] == '\0' || name[7] == '/'
|| (is_path && name[7] == ':'))
&& (len = 7) != 0)))
{
if ((__builtin_expect (!__libc_enable_secure, 1)
|| name[len] == '\0' || (is_path && name[len] == ':'))
&& (name == start || (is_path && name[-1] == ':')))
++cnt;
}
else if ((strncmp (&name[1], "{PLATFORM}", 10) == 0
&& (len = 11) != 0)
|| (strncmp (&name[1], "{PLATFORM}" + 1, 8) == 0
&& (name[9] == '\0' || name[9] == '/'
|| (is_path && name[9] == ':'))
&& (len = 9) != 0))
if ((len = is_dst (start, name + 1, "{ORIGIN}", 8, is_path,
__libc_enable_secure)) != 0
|| ((len = is_dst (start, name + 1, "{PLATFORM}", 10, is_path, 0))
!= 0))
++cnt;
name = strchr (name + len, '$');
@ -236,25 +247,13 @@ _dl_dst_substitute (struct link_map *l, const char *name, char *result,
/* Note that it is no bug that the string in the second and
fourth `strncmp' call is longer than the sequence which
is actually tested. */
if (((strncmp (&name[1], "{ORIGIN}", 8) == 0 && (len = 9) != 0)
|| (strncmp (&name[1], "{ORIGIN}" + 1, 6) == 0
&& (name[7] == '\0' || name[7] == '/'
|| (is_path && name[7] == ':'))
&& (len = 7) != 0)))
{
if ((__builtin_expect (!__libc_enable_secure, 1)
|| name[len] == '\0' || (is_path && name[len] == ':'))
&& (name == start || (is_path && name[-1] == ':')))
repl = l->l_origin;
}
else if ((strncmp (&name[1], "{PLATFORM}", 10) == 0
&& (len = 11) != 0)
|| (strncmp (&name[1], "{PLATFORM}" + 1, 8) == 0
&& (name[9] == '\0' || name[9] == '/' || name[9] == ':')
&& (len = 9) != 0))
if ((len = is_dst (start, name + 1, "{ORIGIN}", 8, is_path,
__libc_enable_secure)) != 0)
repl = l->l_origin;
else if ((len = is_dst (start, name + 1, "{PLATFORM}", 10, is_path,
0)) != 0)
repl = _dl_platform;
if (repl != NULL && repl != (const char *) -1)
{
wp = __stpcpy (wp, repl);
@ -747,7 +746,7 @@ lose (int code, int fd, const char *name, char *realname, struct link_map *l,
is to avoid the function from being inlined. There is no official
way to do this so we use this trick. gcc never inlines functions
which use `alloca'. */
int *a = alloca (sizeof (int));
int *a = (int *) alloca (sizeof (int));
a[0] = fd;
/* The file might already be closed. */
if (a[0] != -1)