Name
inode_permission —
Check for access rights to a given inode
Synopsis
int inode_permission ( | struct inode * inode, |
| | int mask); |
Arguments
struct inode * inode
Inode to check permission on
int 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.