INODE_PERMISSION(9) The Linux VFS INODE_PERMISSION(9)NAMEinode_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.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 INODE_PERMISSION(9)