diff mbox series

[13/22] vl: extract various command line validation snippets to a new function

Message ID 20201021205716.2359430-14-pbonzini@redhat.com
State Accepted
Commit 58c91595a793b9f54b58a449121a2cf4b9f86cf0
Headers show
Series cleanup qemu_init and make sense of command line processing | expand

Commit Message

Paolo Bonzini Oct. 21, 2020, 8:57 p.m. UTC 
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 softmmu/vl.c | 78 ++++++++++++++++++++++++++--------------------------
 1 file changed, 39 insertions(+), 39 deletions(-)
diff mbox series

Patch

diff --git a/softmmu/vl.c b/softmmu/vl.c
index e32e209a82..f8b1ffb46e 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -123,6 +123,7 @@  static int data_dir_idx;
 static const char *mem_path;
 static const char *boot_order;
 static const char *boot_once;
+static const char *incoming;
 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
 int display_opengl;
 const char* keyboard_layout = NULL;
@@ -2866,6 +2867,39 @@  static char *find_datadir(void)
     return get_relocated_path(CONFIG_QEMU_DATADIR);
 }
 
+static void qemu_validate_options(void)
+{
+    QemuOpts *machine_opts = qemu_get_machine_opts();
+    const char *kernel_filename = qemu_opt_get(machine_opts, "kernel");
+    const char *initrd_filename = qemu_opt_get(machine_opts, "initrd");
+    const char *kernel_cmdline = qemu_opt_get(machine_opts, "append");
+
+    if (kernel_filename == NULL) {
+         if (kernel_cmdline != NULL) {
+              error_report("-append only allowed with -kernel option");
+              exit(1);
+          }
+
+          if (initrd_filename != NULL) {
+              error_report("-initrd only allowed with -kernel option");
+              exit(1);
+          }
+    }
+
+    if (incoming && !preconfig_exit_requested) {
+        error_report("'preconfig' and 'incoming' options are "
+                     "mutually exclusive");
+        exit(EXIT_FAILURE);
+    }
+
+#ifdef CONFIG_CURSES
+    if (is_daemonized() && dpy.type == DISPLAY_TYPE_CURSES) {
+        error_report("curses display cannot be used with -daemonize");
+        exit(1);
+    }
+#endif
+}
+
 static void qemu_process_early_options(void)
 {
     char **dirs;
@@ -3122,9 +3156,6 @@  void qemu_init(int argc, char **argv, char **envp)
 {
     int i;
     int snapshot = 0;
-    int linux_boot;
-    const char *initrd_filename;
-    const char *kernel_filename, *kernel_cmdline;
     QemuOpts *opts, *machine_opts;
     QemuOpts *icount_opts = NULL, *accel_opts = NULL;
     QemuOptsList *olist;
@@ -3133,7 +3164,6 @@  void qemu_init(int argc, char **argv, char **envp)
     const char *loadvm = NULL;
     MachineClass *machine_class;
     const char *vga_model = NULL;
-    const char *incoming = NULL;
     bool userconfig = true;
     bool nographic = false;
     int display_remote = 0;
@@ -4050,6 +4080,8 @@  void qemu_init(int argc, char **argv, char **envp)
      */
     loc_set_none();
 
+    qemu_validate_options();
+
     /* These options affect everything else and should be processed
      * before daemonizing.
      */
@@ -4064,12 +4096,6 @@  void qemu_init(int argc, char **argv, char **envp)
     user_register_global_props();
     replay_configure(icount_opts);
 
-    if (incoming && !preconfig_exit_requested) {
-        error_report("'preconfig' and 'incoming' options are "
-                     "mutually exclusive");
-        exit(EXIT_FAILURE);
-    }
-
     configure_rtc(qemu_find_opts_singleton("rtc"));
 
     machine_class = select_machine();
@@ -4173,12 +4199,6 @@  void qemu_init(int argc, char **argv, char **envp)
             error_report("-nographic cannot be used with -daemonize");
             exit(1);
         }
-#ifdef CONFIG_CURSES
-        if (dpy.type == DISPLAY_TYPE_CURSES) {
-            error_report("curses display cannot be used with -daemonize");
-            exit(1);
-        }
-#endif
     }
 
     if (nographic) {
@@ -4309,11 +4329,6 @@  void qemu_init(int argc, char **argv, char **envp)
         qtest_server_init(qtest_chrdev, qtest_log, &error_fatal);
     }
 
-    machine_opts = qemu_get_machine_opts();
-    kernel_filename = qemu_opt_get(machine_opts, "kernel");
-    initrd_filename = qemu_opt_get(machine_opts, "initrd");
-    kernel_cmdline = qemu_opt_get(machine_opts, "append");
-
     opts = qemu_opts_find(qemu_find_opts("boot-opts"), NULL);
     if (opts) {
         boot_order = qemu_opt_get(opts, "order");
@@ -4334,24 +4349,9 @@  void qemu_init(int argc, char **argv, char **envp)
         boot_order = machine_class->default_boot_order;
     }
 
-    if (!kernel_cmdline) {
-        kernel_cmdline = "";
-        current_machine->kernel_cmdline = (char *)kernel_cmdline;
-    }
-
-    linux_boot = (kernel_filename != NULL);
-
-    if (!linux_boot && *kernel_cmdline != '\0') {
-        error_report("-append only allowed with -kernel option");
-        exit(1);
-    }
-
-    if (!linux_boot && initrd_filename != NULL) {
-        error_report("-initrd only allowed with -kernel option");
-        exit(1);
-    }
-
-    if (semihosting_enabled() && !semihosting_get_argc() && kernel_filename) {
+    if (semihosting_enabled() && !semihosting_get_argc()) {
+        const char *kernel_filename = qemu_opt_get(machine_opts, "kernel");
+        const char *kernel_cmdline = qemu_opt_get(machine_opts, "append");
         /* fall back to the -kernel/-append */
         semihosting_arg_fallback(kernel_filename, kernel_cmdline);
     }