diff options
Diffstat (limited to 'criu/kerndat.c')
| -rw-r--r-- | criu/kerndat.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/criu/kerndat.c b/criu/kerndat.c index 5e49fc116..93617012a 100644 --- a/criu/kerndat.c +++ b/criu/kerndat.c @@ -997,6 +997,22 @@ out: return exit_code; } +static int kerndat_has_openat2(void) +{ + if (sys_openat2(AT_FDCWD, ".", NULL, 0) != -1) { + pr_err("openat2 should fail\n"); + return -1; + } + if (errno == ENOSYS) { + pr_debug("No openat2 syscall support\n"); + kdat.has_openat2 = false; + } else { + kdat.has_openat2 = true; + } + + return 0; +} + #define KERNDAT_CACHE_FILE KDAT_RUNDIR "/criu.kdat" #define KERNDAT_CACHE_FILE_TMP KDAT_RUNDIR "/.criu.kdat" @@ -1586,6 +1602,10 @@ int kerndat_init(void) pr_err("kerndat_has_move_mount_set_group failed when initializing kerndat.\n"); ret = -1; } + if (!ret && kerndat_has_openat2()) { + pr_err("kerndat_has_openat2 failed when initializing kerndat.\n"); + ret = -1; + } kerndat_lsm(); kerndat_mmap_min_addr(); |