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author | Christoph Hellwig <hch@lst.de> | 2020-09-25 06:51:46 +0200 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-10-03 06:02:16 +0200 |
commit | 5d47b394794d3086c1c338cc014011a9ee34005c (patch) | |
tree | ed8423843a64dd35b997b8c65d06850cdaf4dc43 /security/keys/compat.c | |
parent | mm: remove compat_process_vm_{readv,writev} (diff) | |
download | linux-5d47b394794d3086c1c338cc014011a9ee34005c.tar.xz linux-5d47b394794d3086c1c338cc014011a9ee34005c.zip |
security/keys: remove compat_keyctl_instantiate_key_iov
Now that import_iovec handles compat iovecs, the native version of
keyctl_instantiate_key_iov can be used for the compat case as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'security/keys/compat.c')
-rw-r--r-- | security/keys/compat.c | 36 |
1 files changed, 2 insertions, 34 deletions
diff --git a/security/keys/compat.c b/security/keys/compat.c index 7ae531db031c..1545efdca562 100644 --- a/security/keys/compat.c +++ b/security/keys/compat.c @@ -12,38 +12,6 @@ #include "internal.h" /* - * Instantiate a key with the specified compatibility multipart payload and - * link the key into the destination keyring if one is given. - * - * The caller must have the appropriate instantiation permit set for this to - * work (see keyctl_assume_authority). No other permissions are required. - * - * If successful, 0 will be returned. - */ -static long compat_keyctl_instantiate_key_iov( - key_serial_t id, - const struct compat_iovec __user *_payload_iov, - unsigned ioc, - key_serial_t ringid) -{ - struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; - struct iov_iter from; - long ret; - - if (!_payload_iov) - ioc = 0; - - ret = import_iovec(WRITE, (const struct iovec __user *)_payload_iov, - ioc, ARRAY_SIZE(iovstack), &iov, &from); - if (ret < 0) - return ret; - - ret = keyctl_instantiate_key_common(id, &from, ringid); - kfree(iov); - return ret; -} - -/* * The key control system call, 32-bit compatibility version for 64-bit archs */ COMPAT_SYSCALL_DEFINE5(keyctl, u32, option, @@ -113,8 +81,8 @@ COMPAT_SYSCALL_DEFINE5(keyctl, u32, option, return keyctl_reject_key(arg2, arg3, arg4, arg5); case KEYCTL_INSTANTIATE_IOV: - return compat_keyctl_instantiate_key_iov( - arg2, compat_ptr(arg3), arg4, arg5); + return keyctl_instantiate_key_iov(arg2, compat_ptr(arg3), arg4, + arg5); case KEYCTL_INVALIDATE: return keyctl_invalidate_key(arg2); |