git: 088fdf8fb8ab - main - kern: add a compressor_format() accessor to the compresssor API

[Kyle Evans]

The branch main has been updated by kevans:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=088fdf8fb8abf9eff56a9eacc1c24011d47357c5

commit 088fdf8fb8abf9eff56a9eacc1c24011d47357c5
Author:     Kyle Evans <kev...@freebsd.org>
AuthorDate: 2025-07-26 14:18:36 +0000
Commit:     Kyle Evans <kev...@freebsd.org>
CommitDate: 2025-07-26 21:31:42 +0000

    kern: add a compressor_format() accessor to the compresssor API
    
    Some work in progress on the ucoredump bits (D51377) would pass the
    compression format out-of-band to the coredump writer's init function,
    but the compressor is accessible to the init_fn via the coredump_params.
    
    Making this accessible in parts of the kernel detached from the bits
    actually doing compression would be useful to clean up the API so that
    we can stick to using coredump_params to pass along whatever may be
    useful.
    
    Reviewed by:    markj
    Differential Revision:  https://reviews.freebsd.org/D51561
---
 sys/kern/subr_compressor.c | 6 ++++++
 sys/sys/compressor.h       | 1 +
 2 files changed, 7 insertions(+)

diff --git a/sys/kern/subr_compressor.c b/sys/kern/subr_compressor.c
index 280264881241..5d59622e0455 100644
--- a/sys/kern/subr_compressor.c
+++ b/sys/kern/subr_compressor.c
@@ -538,6 +538,12 @@ compressor_init(compressor_cb_t cb, int format, size_t 
maxiosize, int level,
        return (s);
 }
 
+int
+compressor_format(const struct compressor *stream)
+{
+       return (stream->methods->format);
+}
+
 void
 compressor_reset(struct compressor *stream)
 {
diff --git a/sys/sys/compressor.h b/sys/sys/compressor.h
index cad9080b46ff..e59eeabec2cd 100644
--- a/sys/sys/compressor.h
+++ b/sys/sys/compressor.h
@@ -42,6 +42,7 @@ struct compressor;
 bool           compressor_avail(int format);
 struct compressor *compressor_init(compressor_cb_t cb, int format,
                    size_t maxiosize, int level, void *arg);
+int            compressor_format(const struct compressor *stream);
 void           compressor_reset(struct compressor *stream);
 int            compressor_write(struct compressor *stream, void *data,
                    size_t len);