qapi: Improve chardev-add documentation

[qemu.git] / vl.c

diff --git a/vl.c b/vl.c
index 315598994fe0bf973710dcfef8afd5ad284b669c..1355f6959eaf0b8190db50d20e00b2bdc2386b18 100644 (file)
--- a/vl.c
+++ b/vl.c
@@ -1244,21 +1244,79 @@ char *get_boot_devices_list(size_t *size)
     return list;
 }
 
-static void numa_add(const char *optarg)
+static void numa_node_parse_cpus(int nodenr, const char *cpus)
 {
-    char option[128];
     char *endptr;
     unsigned long long value, endvalue;
-    int nodenr;
 
-    value = endvalue = 0ULL;
+    /* Empty CPU range strings will be considered valid, they will simply
+     * not set any bit in the CPU bitmap.
+     */
+    if (!*cpus) {
+        return;
+    }
+
+    if (parse_uint(cpus, &value, &endptr, 10) < 0) {
+        goto error;
+    }
+    if (*endptr == '-') {
+        if (parse_uint_full(endptr + 1, &endvalue, 10) < 0) {
+            goto error;
+        }
+    } else if (*endptr == '\0') {
+        endvalue = value;
+    } else {
+        goto error;
+    }
+
+    if (endvalue >= MAX_CPUMASK_BITS) {
+        endvalue = MAX_CPUMASK_BITS - 1;
+        fprintf(stderr,
+            "qemu: NUMA: A max of %d VCPUs are supported\n",
+             MAX_CPUMASK_BITS);
+    }
+
+    if (endvalue < value) {
+        goto error;
+    }
+
+    bitmap_set(node_cpumask[nodenr], value, endvalue-value+1);
+    return;
+
+error:
+    fprintf(stderr, "qemu: Invalid NUMA CPU range: %s\n", cpus);
+    exit(1);
+}
 
-    optarg = get_opt_name(option, 128, optarg, ',') + 1;
+static void numa_add(const char *optarg)
+{
+    char option[128];
+    char *endptr;
+    unsigned long long nodenr;
+
+    optarg = get_opt_name(option, 128, optarg, ',');
+    if (*optarg == ',') {
+        optarg++;
+    }
     if (!strcmp(option, "node")) {
+
+        if (nb_numa_nodes >= MAX_NODES) {
+            fprintf(stderr, "qemu: too many NUMA nodes\n");
+            exit(1);
+        }
+
         if (get_param_value(option, 128, "nodeid", optarg) == 0) {
             nodenr = nb_numa_nodes;
         } else {
-            nodenr = strtoull(option, NULL, 10);
+            if (parse_uint_full(option, &nodenr, 10) < 0) {
+                fprintf(stderr, "qemu: Invalid NUMA nodeid: %s\n", option);
+                exit(1);
+            }
+        }
+
+        if (nodenr >= MAX_NODES) {
+            fprintf(stderr, "qemu: invalid NUMA nodeid: %llu\n", nodenr);
+            exit(1);
         }
 
         if (get_param_value(option, 128, "mem", optarg) == 0) {
@@ -1273,23 +1331,12 @@ static void numa_add(const char *optarg)
             node_mem[nodenr] = sval;
         }
         if (get_param_value(option, 128, "cpus", optarg) != 0) {
-            value = strtoull(option, &endptr, 10);
-            if (*endptr == '-') {
-                endvalue = strtoull(endptr+1, &endptr, 10);
-            } else {
-                endvalue = value;
-            }
-
-            if (!(endvalue < MAX_CPUMASK_BITS)) {
-                endvalue = MAX_CPUMASK_BITS - 1;
-                fprintf(stderr,
-                    "A max of %d CPUs are supported in a guest\n",
-                     MAX_CPUMASK_BITS);
-            }
-
-            bitmap_set(node_cpumask[nodenr], value, endvalue-value+1);
+            numa_node_parse_cpus(nodenr, option);
         }
         nb_numa_nodes++;
+    } else {
+        fprintf(stderr, "Invalid -numa option: %s\n", option);
+        exit(1);
     }
 }
 
@@ -2997,10 +3044,6 @@ int main(int argc, char **argv, char **envp)
                 }
                 break;
             case QEMU_OPTION_numa:
-                if (nb_numa_nodes >= MAX_NODES) {
-                    fprintf(stderr, "qemu: too many NUMA nodes\n");
-                    exit(1);
-                }
                 numa_add(optarg);
                 break;
             case QEMU_OPTION_display:
@@ -3092,8 +3135,10 @@ int main(int argc, char **argv, char **envp)
                                 exit(1);
                             }
                         }
-                        qemu_opts_parse(qemu_find_opts("boot-opts"),
-                                        optarg, 0);
+                        if (!qemu_opts_parse(qemu_find_opts("boot-opts"),
+                                             optarg, 0)) {
+                            exit(1);
+                        }
                     }
                 }
                 break;
@@ -3291,7 +3336,6 @@ int main(int argc, char **argv, char **envp)
                 }
                 opts = qemu_opts_parse(olist, optarg, 1);
                 if (!opts) {
-                    fprintf(stderr, "parse error: %s\n", optarg);
                     exit(1);
                 }
                 break;
@@ -3307,7 +3351,6 @@ int main(int argc, char **argv, char **envp)
                 }
                 opts = qemu_opts_parse(olist, optarg, 1);
                 if (!opts) {
-                    fprintf(stderr, "parse error: %s\n", optarg);
                     exit(1);
                 }
 
@@ -3478,7 +3521,6 @@ int main(int argc, char **argv, char **envp)
                 olist = qemu_find_opts("machine");
                 opts = qemu_opts_parse(olist, optarg, 1);
                 if (!opts) {
-                    fprintf(stderr, "parse error: %s\n", optarg);
                     exit(1);
                 }
                 optarg = qemu_opt_get(opts, "type");
@@ -3583,6 +3625,9 @@ int main(int argc, char **argv, char **envp)
                    exit(1);
                }
                 opts = qemu_opts_parse(qemu_find_opts("option-rom"), optarg, 1);
+                if (!opts) {
+                    exit(1);
+                }
                 option_rom[nb_option_roms].name = qemu_opt_get(opts, "romfile");
                 option_rom[nb_option_roms].bootindex =
                     qemu_opt_get_number(opts, "bootindex", -1);
@@ -3712,7 +3757,6 @@ int main(int argc, char **argv, char **envp)
                 }
                 opts = qemu_opts_parse(olist, optarg, 0);
                 if (!opts) {
-                    fprintf(stderr, "parse error: %s\n", optarg);
                     exit(1);
                 }
                 break;
@@ -3741,14 +3785,14 @@ int main(int argc, char **argv, char **envp)
             case QEMU_OPTION_sandbox:
                 opts = qemu_opts_parse(qemu_find_opts("sandbox"), optarg, 1);
                 if (!opts) {
-                    exit(0);
+                    exit(1);
                 }
                 break;
             case QEMU_OPTION_add_fd:
 #ifndef _WIN32
                 opts = qemu_opts_parse(qemu_find_opts("add-fd"), optarg, 0);
                 if (!opts) {
-                    exit(0);
+                    exit(1);
                 }
 #else
                 error_report("File descriptor passing is disabled on this "
@@ -3758,6 +3802,9 @@ int main(int argc, char **argv, char **envp)
                 break;
             case QEMU_OPTION_object:
                 opts = qemu_opts_parse(qemu_find_opts("object"), optarg, 1);
+                if (!opts) {
+                    exit(1);
+                }
                 break;
             default:
                 os_parse_cmd_args(popt->index, optarg);