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Fix memory corruption when number of filesystems > 16 (#900) 

Signed-off-by: Juergen Hoetzel <juergen@archlinux.org>
This commit is contained in:
Jürgen Hötzel 2018-04-16 12:39:15 +02:00 committed by Johannes 'fish' Ziemke
parent 6025dc207d
commit de0632c2e9
1 changed files with 8 additions and 11 deletions
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19
collector/filesystem_freebsd.go
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@ -41,17 +41,14 @@ func gostring(b []int8) string {
// Expose filesystem fullness.
func (c *filesystemCollector) GetStats() ([]filesystemStats, error) {
buf := make([]unix.Statfs_t, 16)
for {
n, err := unix.Getfsstat(buf, noWait)
if err != nil {
return nil, err
}
if n < len(buf) {
buf = buf[:n]
break
}
buf = make([]unix.Statfs_t, len(buf)*2)
n, err := unix.Getfsstat(nil, noWait)
if err != nil {
return nil, err
}
buf := make([]unix.Statfs_t, n)
_, err = unix.Getfsstat(buf, noWait)
if err != nil {
return nil, err
}
stats := []filesystemStats{}
for _, fs := range buf {