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runsc: check the error when preparing tree for pivot_root

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Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
This commit is contained in:
Tiwei Bie
2021-07-09 10:14:17 +08:00
parent 02fec8dba5
commit c4c5f4d92a
1 changed files with 6 additions and 2 deletions
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runsc/cmd/gofer.go
+6 -2
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@@ -284,8 +284,12 @@ func setupRootFS(spec *specs.Spec, conf *config.Config) error {
}
// Prepare tree structure for pivot_root(2).
os.Mkdir("/proc/proc", 0755)
os.Mkdir("/proc/root", 0755)
if err := os.Mkdir("/proc/proc", 0755); err != nil {
Fatalf("error creating /proc/proc: %v", err)
}
if err := os.Mkdir("/proc/root", 0755); err != nil {
Fatalf("error creating /proc/root: %v", err)
}
// This cannot use SafeMount because there's no available procfs. But we
// know that /proc is an empty tmpfs mount, so this is safe.
if err := unix.Mount("runsc-proc", "/proc/proc", "proc", flags|unix.MS_RDONLY, ""); err != nil {