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Fix memory corruption when number of filesystems > 16
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Signed-off-by: Juergen Hoetzel <[email protected]>
juergenhoetzel committed Apr 15, 2018
1 parent 6025dc2 commit 4a63cb2
Showing 1 changed file with 8 additions and 11 deletions.
19 changes: 8 additions & 11 deletions collector/filesystem_freebsd.go
Original file line number Diff line number Diff line change
@@ -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 {

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