[dwarves,v8,1/3] pahole: Save input filename separate from output

Commit Message

Daniel Xu April 26, 2024, 12:28 a.m. UTC

During detached BTF encoding, the input file is not necessarily the same
as the output file. So save them separately. This matters when we need
to look at the input file again, such as for kfunc tagging.

Signed-off-by: Daniel Xu <[e-mail]>
---
 btf_encoder.c | 3 +++
 1 file changed, 3 insertions(+)

Patch

diff --git a/btf_encoder.c b/btf_encoder.c
index 19e9d90..5ffaf5d 100644
--- a/btf_encoder.c
+++ b/btf_encoder.c
@@ -64,6 +64,7 @@  struct btf_encoder {
 	struct btf        *btf;
 	struct cu         *cu;
 	struct gobuffer   percpu_secinfo;
+	const char	  *source_filename;
 	const char	  *filename;
 	struct elf_symtab *symtab;
 	uint32_t	  type_id_off;
@@ -1648,6 +1649,7 @@  struct btf_encoder *btf_encoder__new(struct cu *cu, const char *detached_filenam
 
 	if (encoder) {
 		encoder->raw_output = detached_filename != NULL;
+		encoder->source_filename = strdup(cu->filename);
 		encoder->filename = strdup(encoder->raw_output ? detached_filename : cu->filename);
 		if (encoder->filename == NULL)
 			goto out_delete;
@@ -1730,6 +1732,7 @@  void btf_encoder__delete(struct btf_encoder *encoder)
 	btf_encoders__delete(encoder);
 	__gobuffer__delete(&encoder->percpu_secinfo);
 	zfree(&encoder->filename);
+	zfree(&encoder->source_filename);
 	btf__free(encoder->btf);
 	encoder->btf = NULL;
 	elf_symtab__delete(encoder->symtab);