mirror of https://github.com/docker/cli.git
68 lines
2.0 KiB
Go
68 lines
2.0 KiB
Go
package mountinfo
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import (
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"os"
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)
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// GetMounts retrieves a list of mounts for the current running process,
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// with an optional filter applied (use nil for no filter).
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func GetMounts(f FilterFunc) ([]*Info, error) {
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return parseMountTable(f)
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}
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// Mounted determines if a specified path is a mount point. In case of any
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// error, false (and an error) is returned.
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//
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// The non-existent path returns an error. If a caller is not interested
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// in this particular error, it should handle it separately using e.g.
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// errors.Is(err, os.ErrNotExist).
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func Mounted(path string) (bool, error) {
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// root is always mounted
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if path == string(os.PathSeparator) {
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return true, nil
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}
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return mounted(path)
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}
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// Info reveals information about a particular mounted filesystem. This
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// struct is populated from the content in the /proc/<pid>/mountinfo file.
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type Info struct {
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// ID is a unique identifier of the mount (may be reused after umount).
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ID int
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// Parent is the ID of the parent mount (or of self for the root
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// of this mount namespace's mount tree).
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Parent int
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// Major and Minor are the major and the minor components of the Dev
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// field of unix.Stat_t structure returned by unix.*Stat calls for
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// files on this filesystem.
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Major, Minor int
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// Root is the pathname of the directory in the filesystem which forms
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// the root of this mount.
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Root string
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// Mountpoint is the pathname of the mount point relative to the
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// process's root directory.
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Mountpoint string
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// Options is a comma-separated list of mount options.
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Options string
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// Optional are zero or more fields of the form "tag[:value]",
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// separated by a space. Currently, the possible optional fields are
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// "shared", "master", "propagate_from", and "unbindable". For more
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// information, see mount_namespaces(7) Linux man page.
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Optional string
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// FSType is the filesystem type in the form "type[.subtype]".
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FSType string
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// Source is filesystem-specific information, or "none".
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Source string
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// VFSOptions is a comma-separated list of superblock options.
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VFSOptions string
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}
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