version: extend get_uname_info() to hide system details

Currently, get_uname_info() function provides the full OS information.
In a following commit, we will need it to provide only the OS name.

Let's extend it to accept a "full" flag that makes it switch between
providing full OS information and providing only the OS name.

We may need to refactor this function in the future if an
`osVersion.format` is added.

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

builtin/bugreport.c

@@ -24,7 +24,7 @@ static void get_system_info(struct strbuf *sys_info)
 
 	/* system call for other version info */
 	strbuf_addstr(sys_info, "uname: ");
-	get_uname_info(sys_info);
+	get_uname_info(sys_info, 1);
 
 	strbuf_addstr(sys_info, _("compiler info: "));
 	get_compiler_info(sys_info);

version.c

@@ -49,7 +49,7 @@ const char *git_user_agent_sanitized(void)
 	return agent;
 }
 
-int get_uname_info(struct strbuf *buf)
+int get_uname_info(struct strbuf *buf, unsigned int full)
 {
 	struct utsname uname_info;
 
@@ -59,11 +59,13 @@ int get_uname_info(struct strbuf *buf)
 			    errno);
 		return -1;
 	}
-
+	if (full)
 		strbuf_addf(buf, "%s %s %s %s\n",
 			    uname_info.sysname,
 			    uname_info.release,
 			    uname_info.version,
 			    uname_info.machine);
+	else
+	     strbuf_addf(buf, "%s\n", uname_info.sysname);
 	return 0;
 }

version.h

@@ -12,6 +12,6 @@ const char *git_user_agent_sanitized(void);
   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);
+int get_uname_info(struct strbuf *buf, unsigned int full);
 
 #endif /* VERSION_H */