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src/tools/acl.rs: impl add_entry_full for ACL and set_permissions for ACLEntry

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Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
This commit is contained in:
Christian Ebner 2019-05-15 13:43:42 +02:00 committed by Dietmar Maurer
parent adec8ea263
commit dec1ff18b8
1 changed files with 41 additions and 2 deletions
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43
src/tools/acl.rs
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@ -15,8 +15,8 @@ use nix::errno::Errno;
// acl_perm_t values
pub type ACLPerm = c_uint;
pub const ACL_READ: ACLPerm = 0x04;
pub const ACL_WRITE: ACLPerm = 0x02;
pub const ACL_READ: ACLPerm = 0x04;
pub const ACL_WRITE: ACLPerm = 0x02;
pub const ACL_EXECUTE: ACLPerm = 0x01;
// acl_tag_t values
@ -48,7 +48,9 @@ extern "C" {
fn acl_get_tag_type(entry: *mut c_void, tag_type: *mut ACLTag) -> c_int;
fn acl_set_tag_type(entry: *mut c_void, tag_type: ACLTag) -> c_int;
fn acl_get_permset(entry: *mut c_void, permset: *mut *mut c_void) -> c_int;
fn acl_clear_perms(permset: *mut c_void) -> c_int;
fn acl_get_perm(permset: *mut c_void, perm: ACLPerm) -> c_int;
fn acl_add_perm(permset: *mut c_void, perm: ACLPerm) -> c_int;
fn acl_get_qualifier(entry: *mut c_void) -> *mut c_void;
fn acl_set_qualifier(entry: *mut c_void, qualifier: *const c_void) -> c_int;
fn acl_init(count: c_int) -> *mut c_void;
@ -137,6 +139,19 @@ impl ACL {
current: ACL_FIRST_ENTRY,
}
}
pub fn add_entry_full(&mut self, tag: ACLTag, qualifier: Option<u64>, permissions: u64)
-> Result<(), nix::errno::Errno>
{
let mut entry = self.create_entry()?;
entry.set_tag_type(tag)?;
if let Some(qualifier) = qualifier {
entry.set_qualifier(qualifier)?;
}
entry.set_permissions(permissions)?;
Ok(())
}
}
#[derive(Debug)]
@ -185,6 +200,30 @@ impl<'a> ACLEntry<'a> {
Ok(permissions)
}
pub fn set_permissions(&mut self, permissions: u64) -> Result<u64, nix::errno::Errno> {
let mut permset = ptr::null_mut() as *mut c_void;
let mut res = unsafe { acl_get_permset(self.ptr, &mut permset) };
if res < 0 {
return Err(Errno::last());
}
res = unsafe { acl_clear_perms(permset) };
if res < 0 {
return Err(Errno::last());
}
for &perm in &[ACL_READ, ACL_WRITE, ACL_EXECUTE] {
if permissions & perm as u64 == perm as u64 {
res = unsafe { acl_add_perm(permset, perm) };
if res < 0 {
return Err(Errno::last());
}
}
}
Ok(permissions)
}
pub fn get_qualifier(&self) -> Result<u64, nix::errno::Errno> {
let qualifier = unsafe { acl_get_qualifier(self.ptr) };
if qualifier.is_null() {