函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\keys\trusted-keys\trusted_tpm1.c Create Date:2022-07-27 20:05:12
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：an have zero or more token= options

函数原型：static int getoptions(char *c, struct trusted_key_payload *pay, struct trusted_key_options *opt)

返回类型：int

参数：

类型参数名称
char *c
struct trusted_key_payload *pay
struct trusted_key_options *opt
735  p等于c
740  token_mask等于0
745  tpm2等于tpm_is_tpm2(chip)
746  如果tpm2小于0则返回:tpm2
749  hash等于如果tpm2则HASH_ALGO_SHA256否则HASH_ALGO_SHA1
751  当p等于分割字符串循环
752  如果p恒等于'\0'或p恒等于' '或p恒等于'\t'则继续下一循环
754  token等于match_token(p, key_tokens, args)
755  如果st_and_set_bit - Set a bit and return its old value*@nr: Bit to set*@addr: Address to count from* This is an atomic fully-ordered operation (implied full memory barrier).则返回:负EINVAL
759  当:token恒等于Opt_pcrinfo
760  pcrinfo_len等于strlen - Find the length of a string*@s: The string to be sized除2
761  如果pcrinfo_len大于MAX_PCRINFO_SIZE则返回:负EINVAL
763  res等于 二进制表示ASCII码的十六进制字符串
765  如果res小于0则返回:负EINVAL
767  退出
768  当:token恒等于Opt_keyhandle
769  res等于kstrtoul - convert a string to an unsigned long*@s: The start of the string. The string must be null-terminated, and may also* include a single newline before its terminating null. The first character* may also be a plus sign, but not a minus sign.
770  如果res小于0则返回:负EINVAL
772  keytype等于SEAL_keytype
773  keyhandle等于handle
774  退出
775  当:token恒等于Opt_keyauth
776  如果strlen - Find the length of a string*@s: The string to be sized不等于2乘SHA1_DIGEST_SIZE则返回:负EINVAL
778  res等于 二进制表示ASCII码的十六进制字符串
780  如果res小于0则返回:负EINVAL
782  退出
783  当:token恒等于Opt_blobauth
784  如果strlen - Find the length of a string*@s: The string to be sized不等于2乘SHA1_DIGEST_SIZE则返回:负EINVAL
786  res等于 二进制表示ASCII码的十六进制字符串
788  如果res小于0则返回:负EINVAL
790  退出
791  当:token恒等于Opt_migratable
792  如果from恒等于'0'则migratable等于0
794  否则返回:负EINVAL
796  退出
797  当:token恒等于Opt_pcrlock
798  res等于kstrtoul - convert a string to an unsigned long*@s: The start of the string. The string must be null-terminated, and may also* include a single newline before its terminating null. The first character* may also be a plus sign, but not a minus sign.
799  如果res小于0则返回:负EINVAL
801  pcrlock等于lock
802  退出
803  当:token恒等于Opt_hash
804  如果st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from则返回:负EINVAL
806  以i小于HASH_ALGO__LAST循环
807  如果非字符串比较则
808  hash等于i
809  退出
812  如果i恒等于HASH_ALGO__LAST则返回:负EINVAL
814  如果非tpm2且i不等于HASH_ALGO_SHA1则
815  打印信息("trusted_key: TPM 1.x only supports SHA-1.\n")
816  返回:负EINVAL
818  退出
819  当:token恒等于Opt_policydigest
820  digest_len等于hash_digest_size[hash]
821  如果非tpm2或strlen - Find the length of a string*@s: The string to be sized不等于2乘digest_len则返回:负EINVAL
823  res等于 二进制表示ASCII码的十六进制字符串
825  如果res小于0则返回:负EINVAL
827  policydigest_len等于digest_len
828  退出
829  当:token恒等于Opt_policyhandle
830  如果非tpm2则返回:负EINVAL
832  res等于kstrtoul - convert a string to an unsigned long*@s: The start of the string. The string must be null-terminated, and may also* include a single newline before its terminating null. The first character* may also be a plus sign, but not a minus sign.
833  如果res小于0则返回:负EINVAL
835  policyhandle等于handle
836  退出
837  默认
838  返回:负EINVAL
841  返回:0
调用者
名称描述
datablob_parsedatablob_parse - parse the keyctl data and fill in the* payload and options structures* On success returns 0, otherwise -EINVAL.