| 1 | // Ulimit tests. Skipped on windows and plan9 (no getrlimit). |
| 2 | //go:build !windows && !plan9 |
| 3 | |
| 4 | package util |
| 5 | |
| 6 | import ( |
| 7 | "fmt" |
| 8 | "os" |
| 9 | "strings" |
| 10 | "syscall" |
| 11 | "testing" |
| 12 | ) |
| 13 | |
| 14 | func TestManageFdLimit(t *testing.T) { |
| 15 | t.Log("Testing file descriptor count") |
| 16 | if _, _, err := ManageFdLimit(); err != nil { |
| 17 | t.Errorf("Cannot manage file descriptors") |
| 18 | } |
| 19 | |
| 20 | if maxFds != uint64(8192) { |
| 21 | t.Errorf("Maximum file descriptors default value changed") |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | func TestManageInvalidNFds(t *testing.T) { |
| 26 | t.Logf("Testing file descriptor invalidity") |
| 27 | var err error |
| 28 | if err = os.Unsetenv("IPFS_FD_MAX"); err != nil { |
| 29 | t.Fatal("Cannot unset the IPFS_FD_MAX env variable") |
| 30 | } |
| 31 | |
| 32 | rlimit := syscall.Rlimit{} |
| 33 | if err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlimit); err != nil { |
| 34 | t.Fatal("Cannot get the file descriptor count") |
| 35 | } |
| 36 | |
| 37 | value := rlimit.Max + rlimit.Cur |
| 38 | if err = os.Setenv("IPFS_FD_MAX", fmt.Sprintf("%d", value)); err != nil { |
| 39 | t.Fatal("Cannot set the IPFS_FD_MAX env variable") |
| 40 | } |
| 41 | |
| 42 | t.Logf("setting ulimit to %d, max %d, cur %d", value, rlimit.Max, rlimit.Cur) |
| 43 | |
| 44 | if changed, new, err := ManageFdLimit(); err == nil { |
| 45 | t.Errorf("ManageFdLimit should return an error: changed %t, new: %d", changed, new) |
| 46 | } else { |
| 47 | flag := strings.Contains(err.Error(), |
| 48 | "failed to raise ulimit to IPFS_FD_MAX") |
| 49 | if !flag { |
| 50 | t.Error("ManageFdLimit returned unexpected error", err) |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | // unset all previous operations |
| 55 | if err = os.Unsetenv("IPFS_FD_MAX"); err != nil { |
| 56 | t.Fatal("Cannot unset the IPFS_FD_MAX env variable") |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | func TestManageFdLimitWithEnvSet(t *testing.T) { |
| 61 | t.Logf("Testing file descriptor manager with IPFS_FD_MAX set") |
| 62 | var err error |
| 63 | if err = os.Unsetenv("IPFS_FD_MAX"); err != nil { |
| 64 | t.Fatal("Cannot unset the IPFS_FD_MAX env variable") |
| 65 | } |
| 66 | |
| 67 | rlimit := syscall.Rlimit{} |
| 68 | if err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlimit); err != nil { |
| 69 | t.Fatal("Cannot get the file descriptor count") |
| 70 | } |
| 71 | |
| 72 | value := rlimit.Max - rlimit.Cur + 1 |
| 73 | if err = os.Setenv("IPFS_FD_MAX", fmt.Sprintf("%d", value)); err != nil { |
| 74 | t.Fatal("Cannot set the IPFS_FD_MAX env variable") |
| 75 | } |
| 76 | |
| 77 | if _, _, err = ManageFdLimit(); err != nil { |
| 78 | t.Errorf("Cannot manage file descriptor count") |
| 79 | } |
| 80 | |
| 81 | // unset all previous operations |
| 82 | if err = os.Unsetenv("IPFS_FD_MAX"); err != nil { |
| 83 | t.Fatal("Cannot unset the IPFS_FD_MAX env variable") |
| 84 | } |
| 85 | } |