Fix showing of swap details when sysinfo() is available

If sysinfo() is available, but not sysctl() or swapctl() the
printing code for swap buffer sizes is incorrectly omitted.
The above condition happens with musl c-library.

Fix #if rule to consider defined(HAVE_SYSINFO). And also
remove the redundant || defined(HAVE_SYSCTL) which was
incorrectly there to start with. Now swap information is
displayed only if an actual libc function to get it is
available.

This also fixes warnings previously seen with musl libc:

   [CC] asterisk.c -> asterisk.o
asterisk.c: In function 'handle_show_sysinfo':
asterisk.c:773:6: warning: variable 'totalswap' set but not used
 [-Wunused-but-set-variable]
  int totalswap = 0;
      ^~~~~~~~~
asterisk.c:770:11: warning: variable 'freeswap' set but not used
 [-Wunused-but-set-variable]
  uint64_t freeswap = 0;
           ^~~~~~~~

Change-Id: I1fb21dad8f27e416c60f138c6f2bff03fb626eca

diff --git a/main/asterisk.c b/main/asterisk.c
index 3c2ca259ee90fb303b7e3fafa69ce8bb98f846a7..81d49b9ad5516453fdc7ee0b88b506090989c1dd 100644 (file)
--- a/main/asterisk.c
+++ b/main/asterisk.c
@@ -853,7 +853,7 @@ static char *handle_show_sysinfo(struct ast_cli_entry *e, int cmd, struct ast_cl
 #if defined(HAVE_SYSINFO)
        ast_cli(a->fd, "  Buffer RAM:                %" PRIu64 " KiB\n", ((uint64_t) sys_info.bufferram * sys_info.mem_unit) / 1024);
 #endif
-#if defined (HAVE_SYSCTL) || defined(HAVE_SWAPCTL)
+#if defined(HAVE_SWAPCTL) || defined(HAVE_SYSINFO)
        ast_cli(a->fd, "  Total Swap Space:          %d KiB\n", totalswap);
        ast_cli(a->fd, "  Free Swap Space:           %" PRIu64 " KiB\n\n", freeswap);
 #endif