Function report |
Source Code:security\smack\smack_lsm.c |
Create Date:2022-07-28 19:21:26 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:smack_mmap_file :* Check permissions for a mmap operation. The @file may be NULL, e.g.* if mapping anonymous memory.*@file contains the file structure for file to map (may be NULL).*@reqprot contains the protection requested by the application.
Proto:static int smack_mmap_file(struct file *file, unsigned long reqprot, unsigned long prot, unsigned long flags)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct file * | file | |
unsigned long | reqprot | |
unsigned long | prot | |
unsigned long | flags |
1673 | If (file == NULL) Then Return 0 |
1676 | If Value for the false possibility is greater at compile time(IS_PRIVATE(file_inode(file))) Then Return 0 |
1679 | isp = smack_inode(file_inode(file)) |
1680 | If (label of the mmap domain == NULL) Then Return 0 |
1682 | sbsp = s_security |
1683 | If smk_flags & SMK_SB_UNTRUSTED && label of the mmap domain != smk_root Then Return -EACCES |
1686 | mkp = label of the mmap domain |
1688 | tsp = smack_cred(current_cred - Access the current task's subjective credentials* Access the subjective credentials of the current task. RCU-safe,* since nobody else can modify it.()) |
1690 | rc = 0 |
1699 | okp = smk_object |
1712 | If may == -ENOENT Then may = smk_access |
1714 | Else may &= smk_access |
1720 | If may == 0 Then Continue |
1756 | Return rc |
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