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From: Christian Ebner <c.ebner@proxmox.com>
To: pbs-devel@lists.proxmox.com
Date: Tue, 7 May 2024 17:51:53 +0200
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Subject: [pbs-devel] [PATCH v5 pxar 11/62] encoder/format: finish payload
stream with marker
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Mark the end of the optional payload stream, this makes sure that at
least some bytes are written to the stream (as empty archives are not
allowed by the proxmox backup server) and possible injected chunks
must be consumed.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
changes since version 4:
- no changes
examples/mk-format-hashes.rs | 5 +++++
src/encoder/mod.rs | 8 ++++++++
src/format/mod.rs | 4 ++++
3 files changed, 17 insertions(+)
diff --git a/examples/mk-format-hashes.rs b/examples/mk-format-hashes.rs
index 83adb38..de73df0 100644
--- a/examples/mk-format-hashes.rs
+++ b/examples/mk-format-hashes.rs
@@ -56,6 +56,11 @@ const CONSTANTS: &[(&str, &str, &str)] = &[
"PXAR_GOODBYE_TAIL_MARKER",
"__PROXMOX_FORMAT_PXAR_GOODBYE_TAIL_MARKER__",
),
+ (
+ "The end marker used in the separate payload stream",
+ "PXAR_PAYLOAD_TAIL_MARKER",
+ "__PROXMOX_FORMAT_PXAR_PAYLOAD_TAIL_MARKER__",
+ ),
];
fn main() {
diff --git a/src/encoder/mod.rs b/src/encoder/mod.rs
index 54258b7..cf16449 100644
--- a/src/encoder/mod.rs
+++ b/src/encoder/mod.rs
@@ -908,6 +908,14 @@ impl<'a, T: SeqWrite + 'a> EncoderImpl<'a, T> {
}
if let EncoderOutput::Owned(Some(output)) = &mut self.payload_output {
+ let mut dummy_writer = 0;
+ seq_write_pxar_entry(
+ output,
+ format::PXAR_PAYLOAD_TAIL_MARKER,
+ &[],
+ &mut dummy_writer,
+ )
+ .await?;
flush(output).await?;
}
diff --git a/src/format/mod.rs b/src/format/mod.rs
index 5d7a652..e451b0f 100644
--- a/src/format/mod.rs
+++ b/src/format/mod.rs
@@ -106,6 +106,8 @@ pub const PXAR_PAYLOAD_REF: u64 = 0x419d3d6bc4ba977e;
pub const PXAR_GOODBYE: u64 = 0x2fec4fa642d5731d;
/// The end marker used in the GOODBYE object
pub const PXAR_GOODBYE_TAIL_MARKER: u64 = 0xef5eed5b753e1555;
+/// The end marker used in the separate payload stream
+pub const PXAR_PAYLOAD_TAIL_MARKER: u64 = 0x6c72b78b984c81b5;
#[derive(Debug, Endian)]
#[repr(C)]
@@ -156,6 +158,7 @@ impl Header {
PXAR_ENTRY => size_of::<Stat>() as u64,
PXAR_PAYLOAD | PXAR_GOODBYE => u64::MAX - (size_of::<Self>() as u64),
PXAR_PAYLOAD_REF => size_of::<PayloadRef>() as u64,
+ PXAR_PAYLOAD_TAIL_MARKER => size_of::<Header>() as u64,
_ => u64::MAX - (size_of::<Self>() as u64),
}
}
@@ -197,6 +200,7 @@ impl Display for Header {
PXAR_ENTRY => "ENTRY",
PXAR_PAYLOAD => "PAYLOAD",
PXAR_PAYLOAD_REF => "PAYLOAD_REF",
+ PXAR_PAYLOAD_TAIL_MARKER => "PXAR_PAYLOAD_TAIL_MARKER",
PXAR_GOODBYE => "GOODBYE",
_ => "UNKNOWN",
};
--
2.39.2
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