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Differential D28783 Diff 84496 usr.sbin/bhyve/snapshot.c

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usr.sbin/bhyve/snapshot.c

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#define KB (1024UL) #define KB (1024UL)
#define MB (1024UL * KB) #define MB (1024UL * KB)
#define GB (1024UL * MB) #define GB (1024UL * MB)
#define SNAPSHOT_CHUNK (4 * MB) #define SNAPSHOT_CHUNK (4 * MB)
#define PROG_BUF_SZ (8192) #define PROG_BUF_SZ (8192)
#define BHYVE_RUN_DIR "/var/run/bhyve"
#define CHECKPOINT_RUN_DIR BHYVE_RUN_DIR "/checkpoint"
#define MAX_VMNAME 100 #define MAX_VMNAME 100
#define MAX_MSG_SIZE 1024 #define MAX_MSG_SIZE 1024
#define SNAPSHOT_BUFFER_SIZE (20 * MB) #define SNAPSHOT_BUFFER_SIZE (20 * MB)
#define JSON_STRUCT_ARR_KEY "structs" #define JSON_STRUCT_ARR_KEY "structs"
#define JSON_DEV_ARR_KEY "devices" #define JSON_DEV_ARR_KEY "devices"
▲ Show 20 Lines • Show All 1,373 Lines • ▼ Show 20 Linescheckpoint_thread(void *param)
if (conn_fd < -1) { if (conn_fd < -1) {
perror("Failed to accept connection"); perror("Failed to accept connection");
} }
return (NULL); return (NULL);
} }
/* /*
* Create directory tree to store runtime specific information:
* i.e. UNIX sockets for IPC with bhyvectl.
*/
static int
make_checkpoint_dir(void)
{
int err;
err = mkdir(BHYVE_RUN_DIR, 0755);
if (err < 0 && errno != EEXIST)
return (err);
err = mkdir(CHECKPOINT_RUN_DIR, 0755);
if (err < 0 && errno != EEXIST)
return (err);
return 0;
}
/*
* Create the listening socket for IPC with bhyvectl * Create the listening socket for IPC with bhyvectl
*/ */
int int
init_checkpoint_thread(struct vmctx *ctx) init_checkpoint_thread(struct vmctx *ctx)
{ {
struct checkpoint_thread_info *checkpoint_info = NULL; struct checkpoint_thread_info *checkpoint_info = NULL;
struct sockaddr_un addr; struct sockaddr_un addr;
int socket_fd; int socket_fd;
Show All 14 Linesinit_checkpoint_thread(struct vmctx *ctx)
socket_fd = socket(PF_UNIX, SOCK_STREAM, 0); socket_fd = socket(PF_UNIX, SOCK_STREAM, 0);
if (socket_fd < 0) { if (socket_fd < 0) {
perror("Socket creation failed (IPC with bhyvectl"); perror("Socket creation failed (IPC with bhyvectl");
err = -1; err = -1;
goto fail; goto fail;
} }
err = make_checkpoint_dir();
if (err < 0) {
perror("Failed to create checkpoint runtime directory");
goto fail;
}
addr.sun_family = AF_UNIX; addr.sun_family = AF_UNIX;
err = vm_get_name(ctx, vmname_buf, MAX_VMNAME - 1); err = vm_get_name(ctx, vmname_buf, MAX_VMNAME - 1);
if (err != 0) { if (err != 0) {
perror("Failed to get VM name"); perror("Failed to get VM name");
goto fail; goto fail;
} }
snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/%s", snprintf(addr.sun_path, sizeof(addr.sun_path), "%s%s",
CHECKPOINT_RUN_DIR, vmname_buf); BHYVE_RUN_DIR, vmname_buf);
addr.sun_len = SUN_LEN(&addr); addr.sun_len = SUN_LEN(&addr);
unlink(addr.sun_path); unlink(addr.sun_path);
if (bind(socket_fd, (struct sockaddr *)&addr, addr.sun_len) != 0) { if (bind(socket_fd, (struct sockaddr *)&addr, addr.sun_len) != 0) {
perror("Failed to bind socket (IPC with bhyvectl)"); perror("Failed to bind socket (IPC with bhyvectl)");
err = -1; err = -1;
goto fail; goto fail;
} }
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