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util/nvmutil: dir fsync with O_DIRECTORY

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guards against replacement attacks, on systems
that support this flag

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-16 21:07:49 +00:00
parent ddb0bc314d
commit 1207b1bb72
1 changed files with 5 additions and 1 deletions
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util/nvmutil/nvmutil.c
+5 -1
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@@ -2150,7 +2150,11 @@ fsync_dir(const char *path)
strcpy(dirbuf, "."); strcpy(dirbuf, ".");
} }
dfd = open(dirbuf, O_RDONLY); dfd = open(dirbuf, O_RDONLY
#ifdef O_DIRECTORY
| O_DIRECTORY
#endif
);
if (dfd == -1) if (dfd == -1)
goto err_fsync_dir; goto err_fsync_dir;