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2003-08-27  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/opendir.c (__opendir): Make sure even struct dirent64
	fits into allocation.  Add padding on 32-bit arches so that
	dirp->data is enough aligned for struct dirent64.
	Avoid clearing of the buffer, just clear DIR structure.
This commit is contained in:
Ulrich Drepper 2003-08-27 16:54:04 +00:00
parent 5556fc6ae4
commit 45c24c0654
2 changed files with 15 additions and 5 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2003-08-27 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/opendir.c (__opendir): Make sure even struct dirent64
fits into allocation. Add padding on 32-bit arches so that
dirp->data is enough aligned for struct dirent64.
Avoid clearing of the buffer, just clear DIR structure.
2003-08-26 Ulrich Drepper <drepper@redhat.com>
* nss/nsswitch.c: Add libc_hidden_def for __nss_lookup_function.

13
sysdeps/unix/opendir.c
View File

@ -137,15 +137,17 @@ __opendir (const char *name)
goto lose;
#ifdef _STATBUF_ST_BLKSIZE
if (__builtin_expect ((size_t) statbuf.st_blksize >= sizeof (struct dirent),
if (__builtin_expect ((size_t) statbuf.st_blksize >= sizeof (struct dirent64),
1))
allocation = statbuf.st_blksize;
else
#endif
allocation = (BUFSIZ < sizeof (struct dirent)
? sizeof (struct dirent) : BUFSIZ);
allocation = (BUFSIZ < sizeof (struct dirent64)
? sizeof (struct dirent64) : BUFSIZ);
dirp = (DIR *) calloc (1, sizeof (DIR) + allocation); /* Zero-fill. */
const int pad = -sizeof (DIR) % __alignof__ (struct dirent64);
dirp = (DIR *) malloc (sizeof (DIR) + allocation + pad);
if (dirp == NULL)
lose:
{
@ -154,7 +156,8 @@ __opendir (const char *name)
__set_errno (save_errno);
return NULL;
}
dirp->data = (char *) (dirp + 1);
memset (dirp, '\0', sizeof (DIR));
dirp->data = (char *) (dirp + 1) + pad;
dirp->allocation = allocation;
dirp->fd = fd;