/*
* Jailhouse, a Linux-based partitioning hypervisor
*
- * Copyright (c) Siemens AG, 2013
+ * Copyright (c) Siemens AG, 2013-2016
*
* Authors:
* Jan Kiszka <jan.kiszka@siemens.com>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
+#include <limits.h>
+#include <libgen.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <jailhouse.h>
-static void __attribute__((noreturn))
-help(const char *progname, int exit_status)
+#define JAILHOUSE_EXEC_DIR LIBEXECDIR "/jailhouse"
+
+enum shutdown_load_mode {LOAD, SHUTDOWN};
+
+struct extension {
+ char *cmd, *subcmd, *help;
+};
+
+static const struct extension extensions[] = {
+ { "cell", "linux", "CELLCONFIG KERNEL [-i | --initrd FILE]\n"
+ " [-c | --cmdline \"STRING\"] "
+ "[-w | --write-params FILE]" },
+ { "cell", "list", "" },
+ { "cell", "stats", "{ ID | [--name] NAME }" },
+ { "config", "create", "[-h] [-g] [-r ROOT] "
+ "[--mem-inmates MEM_INMATES]\n"
+ " [--mem-hv MEM_HV] FILE" },
+ { "config", "collect", "FILE.TAR" },
+ { "hardware", "check", "SYSCONFIG" },
+ { NULL }
+};
+
+static void __attribute__((noreturn)) help(char *prog, int exit_status)
{
- printf("%s { COMMAND | --help }\n"
+ const struct extension *ext;
+
+ printf("Usage: %s { COMMAND | --help || --version }\n"
"\nAvailable commands:\n"
- " enable CONFIGFILE\n"
+ " enable SYSCONFIG\n"
" disable\n"
- " cell create CONFIGFILE IMAGE [-l ADDRESS] "
- "[IMAGE [-l ADDRESS] ...]\n"
+ " cell create CELLCONFIG\n"
+ " cell load { ID | [--name] NAME } "
+ "{ IMAGE | { -s | --string } \"STRING\" }\n"
+ " [-a | --address ADDRESS] ...\n"
+ " cell start { ID | [--name] NAME }\n"
+ " cell shutdown { ID | [--name] NAME }\n"
" cell destroy { ID | [--name] NAME }\n",
- progname);
+ basename(prog));
+ for (ext = extensions; ext->cmd; ext++)
+ printf(" %s %s %s\n", ext->cmd, ext->subcmd, ext->help);
+
exit(exit_status);
}
+static void call_extension_script(const char *cmd, int argc, char *argv[])
+{
+ const struct extension *ext;
+ char new_path[PATH_MAX];
+ char script[64];
+
+ if (argc < 3)
+ return;
+
+ for (ext = extensions; ext->cmd; ext++) {
+ if (strcmp(ext->cmd, cmd) != 0 ||
+ strcmp(ext->subcmd, argv[2]) != 0)
+ continue;
+
+ snprintf(new_path, sizeof(new_path), "PATH=%s:%s:%s",
+ dirname(argv[0]), JAILHOUSE_EXEC_DIR,
+ getenv("PATH") ? : "");
+ putenv(new_path);
+
+ snprintf(script, sizeof(script), "jailhouse-%s-%s",
+ cmd, ext->subcmd);
+ execvp(script, &argv[2]);
+
+ perror("execvp");
+ exit(1);
+ }
+}
+
static int open_dev()
{
int fd;
return fd;
}
+static void *read_string(const char *string, size_t *size)
+{
+ void *buffer;
+
+ *size = strlen(string) + 1;
+
+ buffer = strdup(string);
+ if (!buffer) {
+ fprintf(stderr, "insufficient memory\n");
+ exit(1);
+ }
+
+ return buffer;
+}
+
static void *read_file(const char *name, size_t *size)
{
struct stat stat;
return err;
}
+static int cell_create(int argc, char *argv[])
+{
+ struct jailhouse_cell_create cell_create;
+ size_t size;
+ int err, fd;
+
+ if (argc != 4)
+ help(argv[0], 1);
+
+ cell_create.config_address = (unsigned long)read_file(argv[3], &size);
+ cell_create.config_size = size;
+
+ fd = open_dev();
+
+ err = ioctl(fd, JAILHOUSE_CELL_CREATE, &cell_create);
+ if (err)
+ perror("JAILHOUSE_CELL_CREATE");
+
+ close(fd);
+ free((void *)(unsigned long)cell_create.config_address);
+
+ return err;
+}
+
static int parse_cell_id(struct jailhouse_cell_id *cell_id, int argc,
char *argv[])
{
int arg_pos = 0;
char *endp;
+ memset(cell_id, 0, sizeof(*cell_id));
+
if (argc < 1)
return 0;
if (use_name) {
cell_id->id = JAILHOUSE_CELL_ID_UNUSED;
- strncpy(cell_id->name, argv[arg_pos], sizeof(cell_id->name));
- cell_id->name[sizeof(cell_id->name) - 1] = 0;
+ /* cell_id is initialized with zeros, so leaving out the last
+ * byte ensures that the string is always terminated. */
+ strncpy(cell_id->name, argv[arg_pos],
+ sizeof(cell_id->name) - 1);
}
return arg_pos + 1;
}
-static int cell_create(int argc, char *argv[])
+static bool match_opt(const char *argv, const char *short_opt,
+ const char *long_opt)
+{
+ return strcmp(argv, short_opt) == 0 ||
+ strcmp(argv, long_opt) == 0;
+}
+
+static int cell_shutdown_load(int argc, char *argv[],
+ enum shutdown_load_mode mode)
{
struct jailhouse_preload_image *image;
- struct jailhouse_new_cell *cell;
- unsigned int images, arg_num, n;
+ struct jailhouse_cell_load *cell_load;
+ struct jailhouse_cell_id cell_id;
+ int err, fd, id_args, arg_num;
+ unsigned int images, n;
size_t size;
- int err, fd;
char *endp;
- if (argc < 5)
+ id_args = parse_cell_id(&cell_id, argc - 3, &argv[3]);
+ arg_num = 3 + id_args;
+ if (id_args == 0 || (mode == SHUTDOWN && arg_num != argc) ||
+ (mode == LOAD && arg_num == argc))
help(argv[0], 1);
- arg_num = 4;
images = 0;
while (arg_num < argc) {
+ if (match_opt(argv[arg_num], "-s", "--string")) {
+ if (arg_num + 1 >= argc)
+ help(argv[0], 1);
+ arg_num++;
+ }
+
images++;
arg_num++;
- if (arg_num < argc && strcmp(argv[arg_num], "-l") == 0) {
+ if (arg_num < argc &&
+ match_opt(argv[arg_num], "-a", "--address")) {
if (arg_num + 1 >= argc)
help(argv[0], 1);
arg_num += 2;
}
}
- cell = malloc(sizeof(*cell) + sizeof(*image) * images);
- if (!cell) {
+ cell_load = malloc(sizeof(*cell_load) + sizeof(*image) * images);
+ if (!cell_load) {
fprintf(stderr, "insufficient memory\n");
exit(1);
}
-
- cell->config_address = (unsigned long)read_file(argv[3], &size);
- cell->config_size = size;
- cell->num_preload_images = images;
-
- arg_num = 4;
-
- for (n = 0, image = cell->image; n < images; n++, image++) {
- image->source_address =
- (unsigned long)read_file(argv[arg_num++], &size);
+ cell_load->cell_id = cell_id;
+ cell_load->num_preload_images = images;
+
+ arg_num = 3 + id_args;
+
+ for (n = 0, image = cell_load->image; n < images; n++, image++) {
+ if (match_opt(argv[arg_num], "-s", "--string")) {
+ arg_num++;
+ image->source_address =
+ (unsigned long)read_string(argv[arg_num++],
+ &size);
+ } else {
+ image->source_address =
+ (unsigned long)read_file(argv[arg_num++],
+ &size);
+ }
image->size = size;
image->target_address = 0;
- if (arg_num < argc && strcmp(argv[arg_num], "-l") == 0) {
+ if (arg_num < argc &&
+ match_opt(argv[arg_num], "-a", "--address")) {
errno = 0;
image->target_address =
strtoll(argv[arg_num + 1], &endp, 0);
help(argv[0], 1);
arg_num += 2;
}
- image++;
}
fd = open_dev();
- err = ioctl(fd, JAILHOUSE_CELL_CREATE, cell);
+ err = ioctl(fd, JAILHOUSE_CELL_LOAD, cell_load);
if (err)
- perror("JAILHOUSE_CELL_CREATE");
+ perror("JAILHOUSE_CELL_LOAD");
close(fd);
- free((void *)(unsigned long)cell->config_address);
- for (n = 0, image = cell->image; n < images; n++, image++)
+ for (n = 0, image = cell_load->image; n < images; n++, image++)
free((void *)(unsigned long)image->source_address);
- free(cell);
+ free(cell_load);
return err;
}
-static int cell_destroy(int argc, char *argv[])
+static int cell_simple_cmd(int argc, char *argv[], unsigned int command)
{
struct jailhouse_cell_id cell_id;
int id_args, err, fd;
fd = open_dev();
- err = ioctl(fd, JAILHOUSE_CELL_DESTROY, &cell_id);
+ err = ioctl(fd, command, &cell_id);
if (err)
- perror("JAILHOUSE_CELL_DESTROY");
+ perror(command == JAILHOUSE_CELL_START ?
+ "JAILHOUSE_CELL_START" :
+ command == JAILHOUSE_CELL_DESTROY ?
+ "JAILHOUSE_CELL_DESTROY" :
+ "<unknown command>");
close(fd);
if (argc < 3)
help(argv[0], 1);
- if (strcmp(argv[2], "create") == 0)
+ if (strcmp(argv[2], "create") == 0) {
err = cell_create(argc, argv);
- else if (strcmp(argv[2], "destroy") == 0)
- err = cell_destroy(argc, argv);
- else
+ } else if (strcmp(argv[2], "load") == 0) {
+ err = cell_shutdown_load(argc, argv, LOAD);
+ } else if (strcmp(argv[2], "start") == 0) {
+ err = cell_simple_cmd(argc, argv, JAILHOUSE_CELL_START);
+ } else if (strcmp(argv[2], "shutdown") == 0) {
+ err = cell_shutdown_load(argc, argv, SHUTDOWN);
+ } else if (strcmp(argv[2], "destroy") == 0) {
+ err = cell_simple_cmd(argc, argv, JAILHOUSE_CELL_DESTROY);
+ } else {
+ call_extension_script("cell", argc, argv);
help(argv[0], 1);
+ }
return err;
}
close(fd);
} else if (strcmp(argv[1], "cell") == 0) {
err = cell_management(argc, argv);
+ } else if (strcmp(argv[1], "config") == 0 ||
+ strcmp(argv[1], "hardware") == 0) {
+ call_extension_script(argv[1], argc, argv);
+ help(argv[0], 1);
+ } else if (strcmp(argv[1], "--version") == 0) {
+ printf("Jailhouse management tool %s\n", JAILHOUSE_VERSION);
+ return 0;
} else if (strcmp(argv[1], "--help") == 0) {
help(argv[0], 0);
- } else
+ } else {
help(argv[0], 1);
+ }
return err ? 1 : 0;
}
projects / jailhouse.git / blobdiff