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use {Errno, Result, NixPath};
use libc::{c_int, c_char};
#[cfg(all(target_os = "linux",
any(target_arch = "x86",
target_arch = "x86_64",
target_arch = "arm")),
)]
pub mod quota {
use libc::{self, c_int};
pub struct QuotaCmd(pub QuotaSubCmd, pub QuotaType);
pub type QuotaSubCmd = c_int;
impl QuotaCmd {
pub fn as_int(&self) -> c_int {
((self.0 << 8) | (self.1 & 0x00ff)) as c_int
}
}
// linux quota version >= 2
pub const Q_SYNC: QuotaSubCmd = 0x800001;
pub const Q_QUOTAON: QuotaSubCmd = 0x800002;
pub const Q_QUOTAOFF: QuotaSubCmd = 0x800003;
pub const Q_GETFMT: QuotaSubCmd = 0x800004;
pub const Q_GETINFO: QuotaSubCmd = 0x800005;
pub const Q_SETINFO: QuotaSubCmd = 0x800006;
pub const Q_GETQUOTA: QuotaSubCmd = 0x800007;
pub const Q_SETQUOTA: QuotaSubCmd = 0x800008;
pub type QuotaType = c_int;
pub const USRQUOTA: QuotaType = 0;
pub const GRPQUOTA: QuotaType = 1;
pub type QuotaFmt = c_int;
pub const QFMT_VFS_OLD: QuotaFmt = 1;
pub const QFMT_VFS_V0: QuotaFmt = 2;
pub const QFMT_VFS_V1: QuotaFmt = 4;
libc_bitflags!(
#[derive(Default)]
pub flags QuotaValidFlags: u32 {
QIF_BLIMITS,
QIF_SPACE,
QIF_ILIMITS,
QIF_INODES,
QIF_BTIME,
QIF_ITIME,
QIF_LIMITS,
QIF_USAGE,
QIF_TIMES,
QIF_ALL,
}
);
#[repr(C)]
#[derive(Default,Debug,Copy,Clone)]
pub struct Dqblk {
pub bhardlimit: u64,
pub bsoftlimit: u64,
pub curspace: u64,
pub ihardlimit: u64,
pub isoftlimit: u64,
pub curinodes: u64,
pub btime: u64,
pub itime: u64,
pub valid: QuotaValidFlags,
}
}
mod ffi {
use libc::{c_int, c_char};
extern {
pub fn quotactl(cmd: c_int, special: * const c_char, id: c_int, data: *mut c_char) -> c_int;
}
}
use std::ptr;
fn quotactl<P: ?Sized + NixPath>(cmd: quota::QuotaCmd, special: Option<&P>, id: c_int, addr: *mut c_char) -> Result<()> {
unsafe {
Errno::clear();
let res = try!(
match special {
Some(dev) => dev.with_nix_path(|path| ffi::quotactl(cmd.as_int(), path.as_ptr(), id, addr)),
None => Ok(ffi::quotactl(cmd.as_int(), ptr::null(), id, addr)),
}
);
Errno::result(res).map(drop)
}
}
pub fn quotactl_on<P: ?Sized + NixPath>(which: quota::QuotaType, special: &P, format: quota::QuotaFmt, quota_file: &P) -> Result<()> {
try!(quota_file.with_nix_path(|path| {
let mut path_copy = path.to_bytes_with_nul().to_owned();
let p: *mut c_char = path_copy.as_mut_ptr() as *mut c_char;
quotactl(quota::QuotaCmd(quota::Q_QUOTAON, which), Some(special), format as c_int, p)
}))
}
pub fn quotactl_off<P: ?Sized + NixPath>(which: quota::QuotaType, special: &P) -> Result<()> {
quotactl(quota::QuotaCmd(quota::Q_QUOTAOFF, which), Some(special), 0, ptr::null_mut())
}
pub fn quotactl_sync<P: ?Sized + NixPath>(which: quota::QuotaType, special: Option<&P>) -> Result<()> {
quotactl(quota::QuotaCmd(quota::Q_SYNC, which), special, 0, ptr::null_mut())
}
pub fn quotactl_get<P: ?Sized + NixPath>(which: quota::QuotaType, special: &P, id: c_int, dqblk: &mut quota::Dqblk) -> Result<()> {
use std::mem;
unsafe {
quotactl(quota::QuotaCmd(quota::Q_GETQUOTA, which), Some(special), id, mem::transmute(dqblk))
}
}
pub fn quotactl_set<P: ?Sized + NixPath>(which: quota::QuotaType, special: &P, id: c_int, dqblk: "a::Dqblk) -> Result<()> {
use std::mem;
let mut dqblk_copy = *dqblk;
unsafe {
quotactl(quota::QuotaCmd(quota::Q_SETQUOTA, which), Some(special), id, mem::transmute(&mut dqblk_copy))
}
}
|
