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tools/nolibc: properly align dirent buffer

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As byte buffer is overlaid with a 'struct dirent64'.
it has to satisfy the structs alignment requirements.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Fixes: 665fa8dea9 ("tools/nolibc: add support for directory access")
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-4-060b8a016917@weissschuh.net
This commit is contained in:
Thomas Weißschuh 2025-04-19 12:46:21 +02:00
parent 9fca5554af
commit 0e75768ba2
1 changed files with 2 additions and 1 deletions
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3
tools/include/nolibc/dirent.h
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@ -7,6 +7,7 @@
#ifndef _NOLIBC_DIRENT_H
#define _NOLIBC_DIRENT_H
#include "compiler.h"
#include "stdint.h"
#include "types.h"
@ -58,7 +59,7 @@ int closedir(DIR *dirp)
static __attribute__((unused))
int readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
{
char buf[sizeof(struct linux_dirent64) + NAME_MAX + 1];
char buf[sizeof(struct linux_dirent64) + NAME_MAX + 1] __nolibc_aligned_as(struct linux_dirent64);
struct linux_dirent64 *ldir = (void *)buf;
intptr_t i = (intptr_t)dirp;
int fd, ret;