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Merge pull request 2017 from kylewlacy/fuse_default_permissions_option

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mount: Add default-permissions flag to set FUSE option
This commit is contained in:
Alexander Neumann 2019-01-06 21:19:27 +01:00
commit 2996c110f1
2 changed files with 25 additions and 7 deletions
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11
changelog/unreleased/pull-2017 Normal file
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@ -0,0 +1,11 @@
Enhancement: mount: Enforce FUSE Unix permissions with allow-other
The fuse mount (`restic mount`) now lets the kernel check the permissions of
the files within snapshots (this is done through the `DefaultPermissions` FUSE
option) when the option `--allow-other` is specified.
To restore the old behavior, we've added the `--no-default-permissions` option.
This allows all users that have access to the mount point to access all
files within the snapshots.
https://github.com/restic/restic/pull/2017

7
cmd/restic/cmd_mount.go
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@ -56,6 +56,7 @@ type MountOptions struct {
OwnerRoot bool
AllowRoot bool
AllowOther bool
NoDefaultPermissions bool
Host string
Tags restic.TagLists
Paths []string
@ -71,6 +72,7 @@ func init() {
mountFlags.BoolVar(&mountOptions.OwnerRoot, "owner-root", false, "use 'root' as the owner of files and dirs")
mountFlags.BoolVar(&mountOptions.AllowRoot, "allow-root", false, "allow root user to access the data in the mounted directory")
mountFlags.BoolVar(&mountOptions.AllowOther, "allow-other", false, "allow other users to access the data in the mounted directory")
mountFlags.BoolVar(&mountOptions.NoDefaultPermissions, "no-default-permissions", false, "for 'allow-other', ignore Unix permissions and allow users to read all snapshot files")
mountFlags.StringVarP(&mountOptions.Host, "host", "H", "", `only consider snapshots for this host`)
mountFlags.Var(&mountOptions.Tags, "tag", "only consider snapshots which include this `taglist`")
@ -118,6 +120,11 @@ func mount(opts MountOptions, gopts GlobalOptions, mountpoint string) error {
if opts.AllowOther {
mountOptions = append(mountOptions, systemFuse.AllowOther())
// let the kernel check permissions unless it is explicitly disabled
if !opts.NoDefaultPermissions {
mountOptions = append(mountOptions, systemFuse.DefaultPermissions())
}
}
c, err := systemFuse.Mount(mountpoint, mountOptions...)