qga: move CONFIG_FSFREEZE/TRIM to be meson defined options

Defining these at the meson level allows them to be used a conditional
tests in the QAPI schemas.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240712132459.3974109-8-berrange@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>

meson.build

@@ -2187,6 +2187,19 @@ have_virtfs_proxy_helper = get_option('virtfs_proxy_helper') \
     .require(libcap_ng.found(), error_message: 'the virtfs proxy helper requires libcap-ng') \
     .allowed()
 
+qga_fsfreeze = false
+qga_fstrim = false
+if host_os == 'linux'
+    if cc.has_header_symbol('linux/fs.h', 'FIFREEZE')
+        qga_fsfreeze = true
+    endif
+    if cc.has_header_symbol('linux/fs.h', 'FITRIM')
+        qga_fstrim = true
+    endif
+elif host_os == 'freebsd' and cc.has_header_symbol('ufs/ffs/fs.h', 'UFSSUSPEND')
+    qga_fsfreeze = true
+endif
+
 if get_option('block_drv_ro_whitelist') == ''
   config_host_data.set('CONFIG_BDRV_RO_WHITELIST', '')
 else
@@ -2423,6 +2436,8 @@ config_host_data.set('CONFIG_DEBUG_TCG', get_option('debug_tcg'))
 config_host_data.set('CONFIG_DEBUG_REMAP', get_option('debug_remap'))
 config_host_data.set('CONFIG_QOM_CAST_DEBUG', get_option('qom_cast_debug'))
 config_host_data.set('CONFIG_REPLICATION', get_option('replication').allowed())
+config_host_data.set('CONFIG_FSFREEZE', qga_fsfreeze)
+config_host_data.set('CONFIG_FSTRIM', qga_fstrim)
 
 # has_header
 config_host_data.set('CONFIG_EPOLL', cc.has_header('sys/epoll.h'))

qga/commands-common.h

@@ -15,19 +15,10 @@
 
 #if defined(__linux__)
 #include <linux/fs.h>
-#ifdef FIFREEZE
-#define CONFIG_FSFREEZE
-#endif
-#ifdef FITRIM
-#define CONFIG_FSTRIM
-#endif
 #endif /* __linux__ */
 
 #ifdef __FreeBSD__
 #include <ufs/ffs/fs.h>
-#ifdef UFSSUSPEND
-#define CONFIG_FSFREEZE
-#endif
 #endif /* __FreeBSD__ */
 
 #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM)