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efivars: Call guid_parse() against guid_t type of variable

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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>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180720014726.24031-10-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andy Shevchenko 2018-07-20 10:47:26 +09:00 committed by Ingo Molnar
parent e8f4194d9b
commit c4326563d9
1 changed files with 3 additions and 1 deletions
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4
fs/efivarfs/inode.c
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@ -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))