[pbs-devel] [PATCH backup] update to pxar 0.3 to support negative timestamps

[Wolfgang Bumiller]

Signed-off-by: Wolfgang Bumiller <w.bumiller at proxmox.com>
---
 Cargo.toml           |  2 +-
 src/pxar/create.rs   |  9 ++++-----
 src/pxar/fuse.rs     | 17 ++++++-----------
 src/pxar/metadata.rs | 18 ++++++------------
 src/pxar/tools.rs    |  6 ++----
 5 files changed, 19 insertions(+), 33 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 258a9bb2..23063956 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,7 +43,7 @@ proxmox = { version = "0.2.1", features = [ "sortable-macro", "api-macro", "webs
 #proxmox = { git = "ssh://gitolite3@proxdev.maurer-it.com/rust/proxmox", version = "0.1.2", features = [ "sortable-macro", "api-macro" ] }
 #proxmox = { path = "../proxmox/proxmox", features = [ "sortable-macro", "api-macro", "websocket" ] }
 proxmox-fuse = "0.1.0"
-pxar = { version = "0.2.1", features = [ "tokio-io", "futures-io" ] }
+pxar = { version = "0.3.0", features = [ "tokio-io", "futures-io" ] }
 #pxar = { path = "../pxar", features = [ "tokio-io", "futures-io" ] }
 regex = "1.2"
 rustyline = "6"
diff --git a/src/pxar/create.rs b/src/pxar/create.rs
index f0831526..d0c5ae81 100644
--- a/src/pxar/create.rs
+++ b/src/pxar/create.rs
@@ -1,5 +1,4 @@
 use std::collections::{HashSet, HashMap};
-use std::convert::TryFrom;
 use std::ffi::{CStr, CString, OsStr};
 use std::fmt;
 use std::io::{self, Read, Write};
@@ -696,16 +695,16 @@ fn get_metadata(fd: RawFd, stat: &FileStat, flags: Flags, fs_magic: i64) -> Resu
     // required for some of these
     let proc_path = Path::new("/proc/self/fd/").join(fd.to_string());
 
-    let mtime = u64::try_from(stat.st_mtime * 1_000_000_000 + stat.st_mtime_nsec)
-        .map_err(|_| format_err!("file with negative mtime"))?;
-
     let mut meta = Metadata {
         stat: pxar::Stat {
             mode: u64::from(stat.st_mode),
             flags: 0,
             uid: stat.st_uid,
             gid: stat.st_gid,
-            mtime,
+            mtime: pxar::format::StatxTimestamp {
+                secs: stat.st_mtime,
+                nanos: stat.st_mtime_nsec as u32,
+            },
         },
         ..Default::default()
     };
diff --git a/src/pxar/fuse.rs b/src/pxar/fuse.rs
index 1534ff29..652b9219 100644
--- a/src/pxar/fuse.rs
+++ b/src/pxar/fuse.rs
@@ -673,11 +673,6 @@ fn to_stat(inode: u64, entry: &pxar::Entry) -> Result<libc::stat, Error> {
 
     let metadata = entry.metadata();
 
-    let time = i64::try_from(metadata.stat.mtime)
-        .map_err(|_| format_err!("mtime does not fit into a signed 64 bit integer"))?;
-    let sec = time / 1_000_000_000;
-    let nsec = time % 1_000_000_000;
-
     let mut stat: libc::stat = unsafe { mem::zeroed() };
     stat.st_ino = inode;
     stat.st_nlink = nlink;
@@ -687,11 +682,11 @@ fn to_stat(inode: u64, entry: &pxar::Entry) -> Result<libc::stat, Error> {
         .map_err(|err| format_err!("size does not fit into st_size field: {}", err))?;
     stat.st_uid = metadata.stat.uid;
     stat.st_gid = metadata.stat.gid;
-    stat.st_atime = sec;
-    stat.st_atime_nsec = nsec;
-    stat.st_mtime = sec;
-    stat.st_mtime_nsec = nsec;
-    stat.st_ctime = sec;
-    stat.st_ctime_nsec = nsec;
+    stat.st_atime = metadata.stat.mtime.secs;
+    stat.st_atime_nsec = metadata.stat.mtime.nanos as _;
+    stat.st_mtime = metadata.stat.mtime.secs;
+    stat.st_mtime_nsec = metadata.stat.mtime.nanos as _;
+    stat.st_ctime = metadata.stat.mtime.secs;
+    stat.st_ctime_nsec = metadata.stat.mtime.nanos as _;
     Ok(stat)
 }
diff --git a/src/pxar/metadata.rs b/src/pxar/metadata.rs
index 2cbed756..6df00230 100644
--- a/src/pxar/metadata.rs
+++ b/src/pxar/metadata.rs
@@ -37,26 +37,20 @@ fn allow_notsupp_remember<E: SysError>(err: E, not_supp: &mut bool) -> Result<()
     }
 }
 
-fn nsec_to_update_timespec(mtime_nsec: u64) -> [libc::timespec; 2] {
+fn timestamp_to_update_timespec(mtime: &pxar::format::StatxTimestamp) -> [libc::timespec; 2] {
     // restore mtime
     const UTIME_OMIT: i64 = (1 << 30) - 2;
-    const NANOS_PER_SEC: i64 = 1_000_000_000;
 
-    let sec = (mtime_nsec as i64) / NANOS_PER_SEC;
-    let nsec = (mtime_nsec as i64) % NANOS_PER_SEC;
-
-    let times: [libc::timespec; 2] = [
+    [
         libc::timespec {
             tv_sec: 0,
             tv_nsec: UTIME_OMIT,
         },
         libc::timespec {
-            tv_sec: sec,
-            tv_nsec: nsec,
+            tv_sec: mtime.secs,
+            tv_nsec: mtime.nanos as _,
         },
-    ];
-
-    times
+    ]
 }
 
 //
@@ -130,7 +124,7 @@ pub fn apply(flags: Flags, metadata: &Metadata, fd: RawFd, file_name: &CStr) ->
         libc::utimensat(
             libc::AT_FDCWD,
             c_proc_path.as_ptr(),
-            nsec_to_update_timespec(metadata.stat.mtime).as_ptr(),
+            timestamp_to_update_timespec(&metadata.stat.mtime).as_ptr(),
             0,
         )
     });
diff --git a/src/pxar/tools.rs b/src/pxar/tools.rs
index ec5c13b2..0fdb033d 100644
--- a/src/pxar/tools.rs
+++ b/src/pxar/tools.rs
@@ -120,8 +120,7 @@ pub fn format_single_line_entry(entry: &Entry) -> String {
     let mode_string = mode_string(entry);
 
     let meta = entry.metadata();
-    let mtime = meta.mtime_as_duration();
-    let mtime = chrono::Local.timestamp(mtime.as_secs() as i64, mtime.subsec_nanos());
+    let mtime = chrono::Local.timestamp(meta.stat.mtime.secs, meta.stat.mtime.nanos);
 
     let (size, link) = match entry.kind() {
         EntryKind::File { size, .. } => (format!("{}", *size), String::new()),
@@ -148,8 +147,7 @@ pub fn format_multi_line_entry(entry: &Entry) -> String {
     let mode_string = mode_string(entry);
 
     let meta = entry.metadata();
-    let mtime = meta.mtime_as_duration();
-    let mtime = chrono::Local.timestamp(mtime.as_secs() as i64, mtime.subsec_nanos());
+    let mtime = chrono::Local.timestamp(meta.stat.mtime.secs, meta.stat.mtime.nanos);
 
     let (size, link, type_name) = match entry.kind() {
         EntryKind::File { size, .. } => (format!("{}", *size), String::new(), "file"),
-- 
2.20.1