linux-kernel - [PATCH 1/5] coredump: Move definition of struct coredump

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Date:   Mon, 31 Jan 2022 12:46:01 -0600
From:   "Eric W. Biederman" <ebiederm@...ssion.com>
To:     Jann Horn <jannh@...gle.com>
Cc:     Matthew Wilcox <willy@...radead.org>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Denys Vlasenko <vda.linux@...glemail.com>,
        Kees Cook <keescook@...omium.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        "Liam R . Howlett" <liam.howlett@...cle.com>
Subject: [PATCH 1/5] coredump: Move definition of struct coredump_params
 into coredump.h


Move the definition of struct coredump_params into coredump.h where
it belongs.

Remove the slightly errorneous comment explaining why struct
coredump_params was declared in binfmts.h.

Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
 include/linux/binfmts.h  | 13 +------------
 include/linux/coredump.h | 12 +++++++++++-
 2 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 049cf9421d83..05a91f5499ba 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -8,6 +8,7 @@
 #include <uapi/linux/binfmts.h>
 
 struct filename;
+struct coredump_params;
 
 #define CORENAME_MAX_SIZE 128
 
@@ -77,18 +78,6 @@ struct linux_binprm {
 #define BINPRM_FLAGS_PRESERVE_ARGV0_BIT 3
 #define BINPRM_FLAGS_PRESERVE_ARGV0 (1 << BINPRM_FLAGS_PRESERVE_ARGV0_BIT)
 
-/* Function parameter for binfmt->coredump */
-struct coredump_params {
-	const kernel_siginfo_t *siginfo;
-	struct pt_regs *regs;
-	struct file *file;
-	unsigned long limit;
-	unsigned long mm_flags;
-	loff_t written;
-	loff_t pos;
-	loff_t to_skip;
-};
-
 /*
  * This structure defines the functions that are used to load the binary formats that
  * linux accepts.
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index 248a68c668b4..2ee1460a1d66 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -14,11 +14,21 @@ struct core_vma_metadata {
 	unsigned long dump_size;
 };
 
+struct coredump_params {
+	const kernel_siginfo_t *siginfo;
+	struct pt_regs *regs;
+	struct file *file;
+	unsigned long limit;
+	unsigned long mm_flags;
+	loff_t written;
+	loff_t pos;
+	loff_t to_skip;
+};
+
 /*
  * These are the only things you should do on a core-file: use only these
  * functions to write out all the necessary info.
  */
-struct coredump_params;
 extern void dump_skip_to(struct coredump_params *cprm, unsigned long to);
 extern void dump_skip(struct coredump_params *cprm, size_t nr);
 extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr);
-- 
2.29.2