INODE_PERMISSION(9)                       The Linux VFS                       INODE_PERMISSION(9)



NAME
       inode_permission - Check for access rights to a given inode

SYNOPSIS
       int inode_permission(struct inode * inode, int mask);

ARGUMENTS
       inode
           Inode to check permission on

       mask
           Right to check for (MAY_READ, MAY_WRITE, MAY_EXEC)

DESCRIPTION
       Check for read/write/execute permissions on an inode. We use fs[ug]id for this, letting us
       set arbitrary permissions for filesystem access without changing the “normal” UIDs which
       are used for other things.

       When checking for MAY_APPEND, MAY_WRITE must also be set in mask.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                       INODE_PERMISSION(9)