Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\smack\smack_lsm.c Create Date:2022-07-28 19:21:02
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:smack_inode_removexattr - Smack check on removexattr*@dentry: the object*@name: name of the attribute* Removing the Smack attribute requires CAP_MAC_ADMIN* Returns 0 if access is permitted, an error code otherwise

Proto:static int smack_inode_removexattr(struct dentry *dentry, const char *name)

Type:int

Parameter:

TypeParameterName
struct dentry *dentry
const char *name
1380  rc = 0
1382  If strcmp(name, XATTR_NAME_SMACK) == 0 || strcmp(name, XATTR_NAME_SMACKIPIN) == 0 || strcmp(name, XATTR_NAME_SMACKIPOUT) == 0 || strcmp(name, XATTR_NAME_SMACKEXEC) == 0 || strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0 || strcmp(name, XATTR_NAME_SMACKMMAP) == 0 Then
1388  If Not smack_privileged(Allow MAC configuration or state changes) Then rc = -EPERM
1390  Else rc = ap_inode_removexattr - Determine whether an xattr may be removed*@dentry: The inode/dentry being altered*@name: The name of the xattr to be changed* Determine whether an xattr may be removed from an inode, returning 0 if
1393  If rc != 0 Then Return rc
1396  some inline functions to set up audit data* they do nothing if CONFIG_AUDIT is not set
1397  smk_ad_setfield_u_fs_path_dentry( & ad, dentry)
1399  rc = smk_curacc - determine if current has a specific access to an object*@obj_known: a pointer to the object's Smack label entry*@mode: the access requested, in "MAY" format*@a : common audit data* This function checks the current subject label/object label
1400  rc = smk_bu_inode(d_backing_inode - Get upper or lower inode we should be using*@upper: The upper layer* This is the helper that should be used to get at the inode that will be used* if this dentry were to be opened as a file. The inode may be on the upper, MAY_WRITE, rc)
1401  If rc != 0 Then Return rc
1404  isp = smack_inode(d_backing_inode - Get upper or lower inode we should be using*@upper: The upper layer* This is the helper that should be used to get at the inode that will be used* if this dentry were to be opened as a file. The inode may be on the upper)
1410  If strcmp(name, XATTR_NAME_SMACK) == 0 Then
1411  sbp = The root of the dentry tree
1412  sbsp = s_security
1414  label of the fso = smk_default
1415  Else if strcmp(name, XATTR_NAME_SMACKEXEC) == 0 Then label of the task = NULL
1417  Else if strcmp(name, XATTR_NAME_SMACKMMAP) == 0 Then label of the mmap domain = NULL
1419  Else if strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0 Then smack inode flags &= ~directory is transmuting
1422  Return 0