Name
inode_permission —
check for access rights to a given inode
Synopsis
int fsfuncinode_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
Used to check for read/write/execute permissions on an inode.
We use “fsuid” 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.