Merge v1.2.1-master

Signed-off-by: Emile Vauge <emile@vauge.com>

vendor/github.com/prometheus/procfs/proc_limits.go

@@ -3,29 +3,56 @@ package procfs
 import (
 	"bufio"
 	"fmt"
+	"os"
 	"regexp"
 	"strconv"
 )
 
 // ProcLimits represents the soft limits for each of the process's resource
-// limits.
+// limits. For more information see getrlimit(2):
+// http://man7.org/linux/man-pages/man2/getrlimit.2.html.
 type ProcLimits struct {
-	CPUTime          int
-	FileSize         int
-	DataSize         int
-	StackSize        int
-	CoreFileSize     int
-	ResidentSet      int
-	Processes        int
-	OpenFiles        int
-	LockedMemory     int
-	AddressSpace     int
-	FileLocks        int
-	PendingSignals   int
-	MsqqueueSize     int
-	NicePriority     int
+	// CPU time limit in seconds.
+	CPUTime int
+	// Maximum size of files that the process may create.
+	FileSize int
+	// Maximum size of the process's data segment (initialized data,
+	// uninitialized data, and heap).
+	DataSize int
+	// Maximum size of the process stack in bytes.
+	StackSize int
+	// Maximum size of a core file.
+	CoreFileSize int
+	// Limit of the process's resident set in pages.
+	ResidentSet int
+	// Maximum number of processes that can be created for the real user ID of
+	// the calling process.
+	Processes int
+	// Value one greater than the maximum file descriptor number that can be
+	// opened by this process.
+	OpenFiles int
+	// Maximum number of bytes of memory that may be locked into RAM.
+	LockedMemory int
+	// Maximum size of the process's virtual memory address space in bytes.
+	AddressSpace int
+	// Limit on the combined number of flock(2) locks and fcntl(2) leases that
+	// this process may establish.
+	FileLocks int
+	// Limit of signals that may be queued for the real user ID of the calling
+	// process.
+	PendingSignals int
+	// Limit on the number of bytes that can be allocated for POSIX message
+	// queues for the real user ID of the calling process.
+	MsqqueueSize int
+	// Limit of the nice priority set using setpriority(2) or nice(2).
+	NicePriority int
+	// Limit of the real-time priority set using sched_setscheduler(2) or
+	// sched_setparam(2).
 	RealtimePriority int
-	RealtimeTimeout  int
+	// Limit (in microseconds) on the amount of CPU time that a process
+	// scheduled under a real-time scheduling policy may consume without making
+	// a blocking system call.
+	RealtimeTimeout int
 }
 
 const (
@@ -39,7 +66,7 @@ var (
 
 // NewLimits returns the current soft limits of the process.
 func (p Proc) NewLimits() (ProcLimits, error) {
-	f, err := p.open("limits")
+	f, err := os.Open(p.path("limits"))
 	if err != nil {
 		return ProcLimits{}, err
 	}
@@ -60,7 +87,7 @@ func (p Proc) NewLimits() (ProcLimits, error) {
 		case "Max cpu time":
 			l.CPUTime, err = parseInt(fields[1])
 		case "Max file size":
-			l.FileLocks, err = parseInt(fields[1])
+			l.FileSize, err = parseInt(fields[1])
 		case "Max data size":
 			l.DataSize, err = parseInt(fields[1])
 		case "Max stack size":
@@ -90,7 +117,6 @@ func (p Proc) NewLimits() (ProcLimits, error) {
 		case "Max realtime timeout":
 			l.RealtimeTimeout, err = parseInt(fields[1])
 		}
-
 		if err != nil {
 			return ProcLimits{}, err
 		}