Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
sev-dev: use override credential guards
Use override credential guards for scoped credential override with
automatic restoration on scope exit.
Link: https://patch.msgid.link/20251103-work-creds-guards-prepare_creds-v1-4-b447b82f2c9b@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
+2
-8
+2
-8
drivers/crypto/ccp/sev-dev.c
+2
-8
drivers/crypto/ccp/sev-dev.c
···
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static struct file *open_file_as_root(const char *filename, int flags, umode_t mode)
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{
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struct path root __free(path_put) = {};
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-
struct file *fp;
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-
const struct cred *old_cred;
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task_lock(&init_task);
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get_fs_root(init_task.fs, &root);
···
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return ERR_PTR(-ENOMEM);
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cred->fsuid = GLOBAL_ROOT_UID;
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-
old_cred = override_creds(cred);
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-
fp = file_open_root(&root, filename, flags, mode);
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-
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revert_creds(old_cred);
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-
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return fp;
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+
scoped_with_creds(cred)
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+
return file_open_root(&root, filename, flags, mode);
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}
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static int sev_read_init_ex_file(void)