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[9/9] efivars: Call guid_parse() against guid_t type of variable

Message ID 20180720014726.24031-10-ard.biesheuvel@linaro.org
State New
Headers show
Series EFI changes for v4.19 (#2) | expand

Commit Message

Ard Biesheuvel July 20, 2018, 1:47 a.m. UTC 
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>


uuid_le_to_bin() is deprecated API and take into consideration that variable,
to where we store parsed data, is type of guid_t we switch to guid_parse()
for sake of consistency.

While here, add error checking to it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 fs/efivarfs/inode.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

-- 
2.17.1
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Patch

diff --git a/fs/efivarfs/inode.c b/fs/efivarfs/inode.c
index 71fccccf317e..8c6ab6c95727 100644
--- a/fs/efivarfs/inode.c
+++ b/fs/efivarfs/inode.c
@@ -86,7 +86,9 @@  static int efivarfs_create(struct inode *dir, struct dentry *dentry,
 	/* length of the variable name itself: remove GUID and separator */
 	namelen = dentry->d_name.len - EFI_VARIABLE_GUID_LEN - 1;
 
-	uuid_le_to_bin(dentry->d_name.name + namelen + 1, &var->var.VendorGuid);
+	err = guid_parse(dentry->d_name.name + namelen + 1, &var->var.VendorGuid);
+	if (err)
+		goto out;
 
 	if (efivar_variable_is_removable(var->var.VendorGuid,
 					 dentry->d_name.name, namelen))