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From: Dominik Csapak <d.csapak@proxmox.com>
To: pbs-devel@lists.proxmox.com
Date: Wed, 15 Dec 2021 10:19:45 +0100
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Subject: [pbs-devel] [PATCH proxmox v2 2/3] proxmox-sys: add DiskUsage
struct and helper
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copied from proxmox-backup
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
proxmox-sys/src/fs/mod.rs | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/proxmox-sys/src/fs/mod.rs b/proxmox-sys/src/fs/mod.rs
index 9fe333b..5935b1a 100644
--- a/proxmox-sys/src/fs/mod.rs
+++ b/proxmox-sys/src/fs/mod.rs
@@ -3,6 +3,7 @@ use std::fs::File;
use std::path::Path;
use anyhow::{bail, Error};
+use serde::Serialize;
use std::os::unix::io::{AsRawFd, RawFd};
use nix::unistd::{Gid, Uid};
@@ -102,3 +103,28 @@ impl CreateOptions {
*/
}
+/// Basic disk usage information
+#[derive(Serialize)]
+pub struct DiskUsage {
+ pub total: u64,
+ pub used: u64,
+ pub available: u64,
+}
+
+/// Get disk usage information from path
+pub fn disk_usage(path: &std::path::Path) -> Result<DiskUsage, Error> {
+ let mut stat: libc::statfs64 = unsafe { std::mem::zeroed() };
+
+ use nix::NixPath;
+
+ let res = path.with_nix_path(|cstr| unsafe { libc::statfs64(cstr.as_ptr(), &mut stat) })?;
+ nix::errno::Errno::result(res)?;
+
+ let bsize = stat.f_bsize as u64;
+
+ Ok(DiskUsage{
+ total: stat.f_blocks*bsize,
+ used: (stat.f_blocks-stat.f_bfree)*bsize,
+ available: stat.f_bavail*bsize,
+ })
+}
--
2.30.2