version: refactor get_uname_info()

Some code from "builtin/bugreport.c" uses uname(2) to get system
information.

Let's refactor this code into a new get_uname_info() function, so
that we can reuse it in a following commit.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/version.h b/version.h
index 7c62e80577..afe3dbbab7 100644
--- a/version.h
+++ b/version.h
@@ -7,4 +7,11 @@ extern const char git_built_from_commit_string[];
 const char *git_user_agent(void);
 const char *git_user_agent_sanitized(void);
 
+/*
+  Try to get information about the system using uname(2).
+  Return -1 and put an error message into 'buf' in case of uname()
+  error. Return 0 and put uname info into 'buf' otherwise.
+*/
+int get_uname_info(struct strbuf *buf);
+
 #endif /* VERSION_H */