[pbs-devel] [PATCH proxmox-backup 08/10] tools/systemd/tm_editor: remove conversion of the year

[Dominik Csapak <d.csapak@proxmox.com>]

the tm struct contains the year - 1900 but we added that

if we want to use the libc normalization correctly, the tm struct
must have the correct year in it, else the computations for timezones,
etc. fail

instead add a getter that adds the years and a setter that subtracts it again

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
 src/tools/systemd/tm_editor.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/tools/systemd/tm_editor.rs b/src/tools/systemd/tm_editor.rs
index a1cf2464..529e17f6 100644
--- a/src/tools/systemd/tm_editor.rs
+++ b/src/tools/systemd/tm_editor.rs
@@ -25,13 +25,11 @@ pub struct TmEditor {
 impl TmEditor {
 
     pub fn new(epoch: i64, utc: bool) -> Result<Self, Error> {
-        let mut t = if utc { gmtime(epoch)? } else { localtime(epoch)? };
-        t.tm_year += 1900; // real years for clarity
+        let t = if utc { gmtime(epoch)? } else { localtime(epoch)? };
         Ok(Self { utc, t, changes: TMChanges::all() })
     }
 
     pub fn into_epoch(mut self) -> Result<i64, Error> {
-        self.t.tm_year -= 1900;
         let epoch = if self.utc { timegm(&mut self.t)? } else { timelocal(&mut self.t)? };
         Ok(epoch)
     }
@@ -47,6 +45,7 @@ impl TmEditor {
         self.normalize_time()
     }
 
+    pub fn year(&self) -> libc::c_int { self.t.tm_year + 1900 } // see man mktime
     pub fn hour(&self) -> libc::c_int { self.t.tm_hour }
     pub fn min(&self) -> libc::c_int { self.t.tm_min }
     pub fn sec(&self) -> libc::c_int { self.t.tm_sec }
@@ -112,7 +111,7 @@ impl TmEditor {
     }
 
     pub fn set_year(&mut self, v: libc::c_int) -> Result<(), Error> {
-        self.t.tm_year = v;
+        self.t.tm_year = v - 1900;
         self.changes.insert(TMChanges::YEAR);
         self.normalize_time()
     }
-- 
2.20.1