mirror of
https://github.com/moby/moby.git
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f864421ead
This patch updates all dependencies to match what is used in moby/moby. Making the dependencies match what is used in that repository makes sure we test with the same version as libnetwork is later built with in moby. This also gets rid of some temporary forks that were needed during the migration of Sirupsen/logrus to sirupsen/logrus. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
118 lines
2.9 KiB
Go
118 lines
2.9 KiB
Go
package units
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import (
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"fmt"
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"strconv"
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"strings"
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)
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// Ulimit is a human friendly version of Rlimit.
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type Ulimit struct {
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Name string
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Hard int64
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Soft int64
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}
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// Rlimit specifies the resource limits, such as max open files.
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type Rlimit struct {
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Type int `json:"type,omitempty"`
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Hard uint64 `json:"hard,omitempty"`
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Soft uint64 `json:"soft,omitempty"`
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}
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const (
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// magic numbers for making the syscall
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// some of these are defined in the syscall package, but not all.
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// Also since Windows client doesn't get access to the syscall package, need to
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// define these here
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rlimitAs = 9
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rlimitCore = 4
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rlimitCPU = 0
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rlimitData = 2
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rlimitFsize = 1
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rlimitLocks = 10
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rlimitMemlock = 8
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rlimitMsgqueue = 12
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rlimitNice = 13
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rlimitNofile = 7
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rlimitNproc = 6
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rlimitRss = 5
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rlimitRtprio = 14
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rlimitRttime = 15
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rlimitSigpending = 11
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rlimitStack = 3
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)
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var ulimitNameMapping = map[string]int{
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//"as": rlimitAs, // Disabled since this doesn't seem usable with the way Docker inits a container.
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"core": rlimitCore,
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"cpu": rlimitCPU,
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"data": rlimitData,
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"fsize": rlimitFsize,
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"locks": rlimitLocks,
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"memlock": rlimitMemlock,
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"msgqueue": rlimitMsgqueue,
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"nice": rlimitNice,
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"nofile": rlimitNofile,
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"nproc": rlimitNproc,
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"rss": rlimitRss,
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"rtprio": rlimitRtprio,
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"rttime": rlimitRttime,
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"sigpending": rlimitSigpending,
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"stack": rlimitStack,
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}
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// ParseUlimit parses and returns a Ulimit from the specified string.
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func ParseUlimit(val string) (*Ulimit, error) {
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parts := strings.SplitN(val, "=", 2)
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if len(parts) != 2 {
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return nil, fmt.Errorf("invalid ulimit argument: %s", val)
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}
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if _, exists := ulimitNameMapping[parts[0]]; !exists {
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return nil, fmt.Errorf("invalid ulimit type: %s", parts[0])
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}
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var (
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soft int64
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hard = &soft // default to soft in case no hard was set
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temp int64
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err error
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)
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switch limitVals := strings.Split(parts[1], ":"); len(limitVals) {
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case 2:
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temp, err = strconv.ParseInt(limitVals[1], 10, 64)
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if err != nil {
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return nil, err
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}
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hard = &temp
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fallthrough
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case 1:
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soft, err = strconv.ParseInt(limitVals[0], 10, 64)
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if err != nil {
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return nil, err
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}
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default:
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return nil, fmt.Errorf("too many limit value arguments - %s, can only have up to two, `soft[:hard]`", parts[1])
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}
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if soft > *hard {
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return nil, fmt.Errorf("ulimit soft limit must be less than or equal to hard limit: %d > %d", soft, *hard)
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}
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return &Ulimit{Name: parts[0], Soft: soft, Hard: *hard}, nil
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}
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// GetRlimit returns the RLimit corresponding to Ulimit.
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func (u *Ulimit) GetRlimit() (*Rlimit, error) {
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t, exists := ulimitNameMapping[u.Name]
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if !exists {
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return nil, fmt.Errorf("invalid ulimit name %s", u.Name)
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}
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return &Rlimit{Type: t, Soft: uint64(u.Soft), Hard: uint64(u.Hard)}, nil
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}
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func (u *Ulimit) String() string {
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return fmt.Sprintf("%s=%d:%d", u.Name, u.Soft, u.Hard)
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}
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