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e0614367ca
Instead of getting mount options from /proc/self/mountinfo, which is very costly to read/parse (and can even be unreliable), let's use statfs(2) to figure out the flags we need. [v2: move getting default options to pkg/util, make it linux-specific] Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
24 lines
563 B
Go
24 lines
563 B
Go
package util
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import (
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"os"
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"golang.org/x/sys/unix"
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)
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func getDefaultMountOptions(path string) (defaultMountOptions, error) {
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opts := defaultMountOptions{true, true, true}
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if path == "" {
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return opts, nil
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}
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var statfs unix.Statfs_t
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if e := unix.Statfs(path, &statfs); e != nil {
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return opts, &os.PathError{Op: "statfs", Path: path, Err: e}
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}
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opts.nodev = (statfs.Flags&unix.MS_NODEV == unix.MS_NODEV)
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opts.noexec = (statfs.Flags&unix.MS_NOEXEC == unix.MS_NOEXEC)
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opts.nosuid = (statfs.Flags&unix.MS_NOSUID == unix.MS_NOSUID)
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return opts, nil
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}
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