函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\apparmor\mount.c Create Date:2022-07-27 21:47:09
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Returns 0 on success else element that match failed in, this is the* index into the mnt_info_table above

函数原型：static int do_match_mnt(struct aa_dfa *dfa, unsigned int start, const char *mntpnt, const char *devname, const char *type, unsigned long flags, void *data, bool binary, struct aa_perms *perms)

返回类型：int

参数：

类型参数名称
struct aa_dfa *dfa
unsigned intstart
const char *mntpnt
const char *devname
const char *type
unsigned longflags
void *data
boolbinary
struct aa_perms *perms
246  AA_BUG(!dfa)
247  AA_BUG(!perms)
249  state等于aa_dfa_match - traverse @dfa to find state @str stops at*@dfa: the dfa to match @str against (NOT NULL)*@start: the state of the dfa to start matching in*@str: the null terminated string of bytes to match against the dfa (NOT NULL)* aa_dfa_match will
250  state等于aa_dfa_null_transition - step to next state after null character*@dfa: the dfa to match against*@start: the state of the dfa to start matching in* aa_dfa_null_transition transitions to the next state after a null* character which is not used in standard
251  如果非state则返回:1
254  如果devname则state等于aa_dfa_match - traverse @dfa to find state @str stops at*@dfa: the dfa to match @str against (NOT NULL)*@start: the state of the dfa to start matching in*@str: the null terminated string of bytes to match against the dfa (NOT NULL)* aa_dfa_match will
256  state等于aa_dfa_null_transition - step to next state after null character*@dfa: the dfa to match against*@start: the state of the dfa to start matching in* aa_dfa_null_transition transitions to the next state after a null* character which is not used in standard
257  如果非state则返回:2
260  如果type则state等于aa_dfa_match - traverse @dfa to find state @str stops at*@dfa: the dfa to match @str against (NOT NULL)*@start: the state of the dfa to start matching in*@str: the null terminated string of bytes to match against the dfa (NOT NULL)* aa_dfa_match will
262  state等于aa_dfa_null_transition - step to next state after null character*@dfa: the dfa to match against*@start: the state of the dfa to start matching in* aa_dfa_null_transition transitions to the next state after a null* character which is not used in standard
263  如果非state则返回:3
266  state等于match_mnt_flags - Do an ordered match on mount flags*@dfa: dfa to match against*@state: state to start in*@flags: mount flags to match against* Mount flags are encoded as an ordered match
267  如果非state则返回:4
269  perms等于mpute_mnt_perms - compute mount permission associated with @state*@dfa: dfa to match against (NOT NULL)*@state: state match finished in* Returns: mount permissions
270  如果allow按位与AA_MAY_MOUNT则返回:0
274  如果data且非binary且allow按位与AA_MNT_CONT_MATCH则
275  state等于aa_dfa_null_transition - step to next state after null character*@dfa: the dfa to match against*@start: the state of the dfa to start matching in* aa_dfa_null_transition transitions to the next state after a null* character which is not used in standard
276  如果非state则返回:4
279  state等于aa_dfa_match - traverse @dfa to find state @str stops at*@dfa: the dfa to match @str against (NOT NULL)*@start: the state of the dfa to start matching in*@str: the null terminated string of bytes to match against the dfa (NOT NULL)* aa_dfa_match will
280  如果非state则返回:5
282  perms等于mpute_mnt_perms - compute mount permission associated with @state*@dfa: dfa to match against (NOT NULL)*@state: state match finished in* Returns: mount permissions
283  如果allow按位与AA_MAY_MOUNT则返回:0
288  返回:4
调用者
名称描述
match_mnt_path_strmatch_mnt_path_str - handle path matching for mount*@profile: the confining profile*@mntpath: for the mntpnt (NOT NULL)*@buffer: buffer to be used to lookup mntpath*@devnme: string for the devname/src_name (MAY BE NULL OR ERRPTR)*@type: string for the dev