Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\tomoyo\file.c Create Date:2022-07-28 19:42:06
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:moyo_mkdev_perm - Check permission for "mkblock" and "mkchar".*@operation: Type of operation. (TOMOYO_TYPE_MKCHAR or TOMOYO_TYPE_MKBLOCK)*@path: Pointer to "struct path".*@mode: Create mode.*@dev: Device number.

Proto:int tomoyo_mkdev_perm(const u8 operation, const struct path *path, const unsigned int mode, unsigned int dev)

Type:int

Parameter:

TypeParameterName
const u8operation
const struct path *path
const unsigned intmode
unsigned intdev
863  struct tomoyo_obj_info obj = { First pathname. Initialized with { NULL, NULL } if no path. = {mnt = mnt, dentry = dentry}, }
866  error = -ENOMEM
870  If tomoyo_init_request_info( & r, NULL, Mapping table from "enum tomoyo_mkdev_acl_index" to "enum tomoyo_mac_index".[operation]) == TOMOYO_CONFIG_DISABLED Then Return 0
873  idx = moyo_read_lock - Take lock for protecting policy.* Returns index number for tomoyo_read_unlock().
874  error = -ENOMEM
875  If moyo_get_realpath - Get realpath.*@buf: Pointer to "struct tomoyo_path_info".*@path: Pointer to "struct path".* Returns true on success, false otherwise. Then
876  For holding parameters specific to operations which deal files.* NULL if not dealing files. = obj
877  dev = new_decode_dev(dev)
878  param_type = TOMOYO_TYPE_MKDEV_ACL
879  filename = buf
880  One of values in "enum tomoyo_mkdev_acl_index". = operation
881  mode = mode
882  major = MAJOR(dev)
883  minor = MINOR(dev)
884  moyo_check_acl - Do permission check.*@r: Pointer to "struct tomoyo_request_info".*@check_entry: Callback function to check type specific parameters.* Returns 0 on success, negative value otherwise.* Caller holds tomoyo_read_lock().
885  error = moyo_audit_mkdev_log - Audit path/number/number/number request log.*@r: Pointer to "struct tomoyo_request_info".* Returns 0 on success, negative value otherwise.
886  kfree(name)
888  moyo_read_unlock - Release lock for protecting policy.*@idx: Index number returned by tomoyo_read_lock().* Returns nothing.
889  If One of tomoyo_mode_index . != TOMOYO_CONFIG_ENFORCING Then error = 0
891  Return error
Caller
NameDescribe
tomoyo_path_mknodmoyo_path_mknod - Target for security_path_mknod().*@parent: Pointer to "struct path".*@dentry: Pointer to "struct dentry".*@mode: DAC permission mode.*@dev: Device attributes.* Returns 0 on success, negative value otherwise.