272 lines
12 KiB
Protocol Buffer
272 lines
12 KiB
Protocol Buffer
syntax = "proto2";
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package nsjail;
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enum Mode {
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LISTEN = 0; /* Listening on a TCP port */
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ONCE = 1; /* Running the command once only */
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RERUN = 2; /* Re-executing the command (forever) */
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EXECVE = 3; /* Executing command w/o the supervisor */
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}
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/* Should be self explanatory */
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enum LogLevel {
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DEBUG = 0; /* Equivalent to the '-v' cmd-line option */
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INFO = 1; /* Default level */
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WARNING = 2; /* Equivalent to the '-q' cmd-line option */
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ERROR = 3;
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FATAL = 4;
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}
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message IdMap {
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/* Empty string means "current uid/gid" */
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optional string inside_id = 1 [default = ""];
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optional string outside_id = 2 [default = ""];
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/* See 'man user_namespaces' for the meaning of count */
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optional uint32 count = 3 [default = 1];
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/* Does this map use /usr/bin/new[u|g]idmap binary? */
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optional bool use_newidmap = 4 [default = false];
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}
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message MountPt {
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/* Can be skipped for filesystems like 'proc' */
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optional string src = 1 [default = ""];
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/* Should 'src' path be prefixed with this envar? */
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optional string prefix_src_env = 2 [default = ""];
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/* If specified, contains buffer that will be written to the dst file */
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optional bytes src_content = 3 [default = ""];
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/* Mount point inside jail */
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required string dst = 4 [default = ""];
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/* Should 'dst' path be prefixed with this envar? */
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optional string prefix_dst_env = 5 [default = ""];
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/* Can be empty for mount --bind mounts */
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optional string fstype = 6 [default = ""];
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/* E.g. size=5000000 for 'tmpfs' */
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optional string options = 7 [default = ""];
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/* Is it a 'mount --bind src dst' type of mount? */
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optional bool is_bind = 8 [default = false];
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/* Is it a R/W mount? */
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optional bool rw = 9 [default = false];
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/* Is it a directory? If not specified an internal
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heuristics will be used to determine that */
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optional bool is_dir = 10;
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/* Should the sandboxing fail if we cannot mount this resource? */
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optional bool mandatory = 11 [default = true];
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/* Is it a symlink (instead of real mount point)? */
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optional bool is_symlink = 12 [default = false];
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/* Is it a nosuid mount */
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optional bool nosuid = 13 [default = false];
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/* Is it a nodev mount */
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optional bool nodev = 14 [default = false];
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/* Is it a noexec mount */
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optional bool noexec = 15 [default = false];
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}
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enum RLimit {
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VALUE = 0; /* Use the provided value */
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SOFT = 1; /* Use the current soft rlimit */
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HARD = 2; /* Use the current hard rlimit */
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INF = 3; /* Use RLIM64_INFINITY */
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}
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message Exe {
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/* Will be used both as execv's path and as argv[0] */
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required string path = 1;
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/* This will be argv[1] and so on.. */
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repeated string arg = 2;
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/* Override argv[0] */
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optional string arg0 = 3;
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/* Should execveat() be used to execute a file-descriptor instead? */
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optional bool exec_fd = 4 [default = false];
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}
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message NsJailConfig {
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/* Optional name and description for this config */
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optional string name = 1 [default = ""];
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repeated string description = 2;
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/* Execution mode: see 'msg Mode' description for more */
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optional Mode mode = 3 [default = ONCE];
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/* Hostname inside jail */
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optional string hostname = 4 [default = "NSJAIL"];
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/* Initial current working directory for the binary */
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optional string cwd = 5 [default = "/"];
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/* Defines whether to use switch_root or pivot_root */
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optional bool no_pivotroot = 6 [default = false];
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/* TCP port to listen to. Valid with mode=LISTEN only */
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optional uint32 port = 7 [default = 0];
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/* Host to bind to for mode=LISTEN. Must be in IPv6 format */
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optional string bindhost = 8 [default = "::"];
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/* For mode=LISTEN, maximum number of connections across all IPs */
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optional uint32 max_conns = 9 [default = 0];
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/* For mode=LISTEN, maximum number of connections from a single IP */
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optional uint32 max_conns_per_ip = 10 [default = 0];
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/* Wall-time time limit for commands */
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optional uint32 time_limit = 11 [default = 600];
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/* Should nsjail go into background? */
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optional bool daemon = 12 [default = false];
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/* Maximum number of CPUs to use: 0 - no limit */
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optional uint32 max_cpus = 13 [default = 0];
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/* FD to log to. */
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optional int32 log_fd = 14;
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/* File to save logs to. */
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optional string log_file = 15;
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/* Minimum log level displayed.
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See 'msg LogLevel' description for more */
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optional LogLevel log_level = 16;
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/* Should the current environment variables be kept
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when executing the binary */
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optional bool keep_env = 17 [default = false];
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/* EnvVars to be set before executing binaries. If the envar doesn't contain '='
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(e.g. just the 'DISPLAY' string), the current envar value will be used */
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repeated string envar = 18;
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/* Should capabilities be preserved or dropped */
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optional bool keep_caps = 19 [default = false];
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/* Which capabilities should be preserved if keep_caps == false.
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Format: "CAP_SYS_PTRACE" */
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repeated string cap = 20;
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/* Should nsjail close FD=0,1,2 before executing the process */
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optional bool silent = 21 [default = false];
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/* Should the child process have control over terminal?
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Can be useful to allow /bin/sh to provide
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job control / signals. Dangerous, can be used to put
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characters into the controlling terminal back */
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optional bool skip_setsid = 22 [default = false];
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/* Redirect sdterr of the process to /dev/null instead of the socket or original TTY */
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optional bool stderr_to_null = 23 [default = false];
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/* Which FDs should be passed to the newly executed process
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By default only FD=0,1,2 are passed */
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repeated int32 pass_fd = 24;
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/* Setting it to true will allow to have set-uid binaries
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inside the jail */
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optional bool disable_no_new_privs = 25 [default = false];
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/* Various rlimits, the rlimit_as/rlimit_core/... are used only if
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rlimit_as_type/rlimit_core_type/... are set to RLimit::VALUE */
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optional uint64 rlimit_as = 26 [default = 4096]; /* In MiB */
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optional RLimit rlimit_as_type = 27 [default = VALUE];
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optional uint64 rlimit_core = 28 [default = 0]; /* In MiB */
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optional RLimit rlimit_core_type = 29 [default = VALUE];
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optional uint64 rlimit_cpu = 30 [default = 600]; /* In seconds */
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optional RLimit rlimit_cpu_type = 31 [default = VALUE];
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optional uint64 rlimit_fsize = 32 [default = 1]; /* In MiB */
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optional RLimit rlimit_fsize_type = 33 [default = VALUE];
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optional uint64 rlimit_nofile = 34 [default = 32];
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optional RLimit rlimit_nofile_type = 35 [default = VALUE];
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/* RLIMIT_NPROC is system-wide - tricky to use; use the soft limit value by
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* default here */
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optional uint64 rlimit_nproc = 36 [default = 1024];
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optional RLimit rlimit_nproc_type = 37 [default = SOFT];
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/* In MiB, use the soft limit value by default */
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optional uint64 rlimit_stack = 38 [default = 8];
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optional RLimit rlimit_stack_type = 39 [default = SOFT];
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/* In KB, use the soft limit value by default */
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optional uint64 rlimit_memlock = 40 [default = 64];
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optional RLimit rlimit_memlock_type = 41 [default = SOFT];
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optional uint64 rlimit_rtprio = 42 [default = 0];
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optional RLimit rlimit_rtprio_type = 43 [default = SOFT];
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optional uint64 rlimit_msgqueue = 44 [default = 1024]; /* In bytes */
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optional RLimit rlimit_msgqueue_type = 45 [default = SOFT];
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/* Disable all rlimits, default to limits set by parent */
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optional bool disable_rl = 46 [default = false];
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/* See 'man personality' for more */
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optional bool persona_addr_compat_layout = 47 [default = false];
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optional bool persona_mmap_page_zero = 48 [default = false];
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optional bool persona_read_implies_exec = 49 [default = false];
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optional bool persona_addr_limit_3gb = 50 [default = false];
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optional bool persona_addr_no_randomize = 51 [default = false];
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/* Which name-spaces should be used? */
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optional bool clone_newnet = 52 [default = true];
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optional bool clone_newuser = 53 [default = true];
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optional bool clone_newns = 54 [default = true];
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optional bool clone_newpid = 55 [default = true];
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optional bool clone_newipc = 56 [default = true];
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optional bool clone_newuts = 57 [default = true];
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/* Disable for kernel versions < 4.6 as it's not supported there */
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optional bool clone_newcgroup = 58 [default = true];
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/* Supported with kernel versions >= 5.3 */
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optional bool clone_newtime = 59 [default = false];
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/* Mappings for UIDs and GIDs. See the description for 'msg IdMap'
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for more */
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repeated IdMap uidmap = 60;
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repeated IdMap gidmap = 61;
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/* Should /proc be mounted (R/O)? This can also be added in the 'mount'
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section below */
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optional bool mount_proc = 62 [default = false];
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/* Mount points inside the jail. See the description for 'msg MountPt'
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for more */
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repeated MountPt mount = 63;
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/* Kafel seccomp-bpf policy file or a string:
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Homepage of the project: https://github.com/google/kafel */
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optional string seccomp_policy_file = 64;
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repeated string seccomp_string = 65;
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/* Setting it to true makes audit write seccomp logs to dmesg */
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optional bool seccomp_log = 66 [default = false];
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/* If > 0, maximum cumulative size of RAM used inside any jail */
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optional uint64 cgroup_mem_max = 67 [default = 0]; /* In bytes */
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/* If > 0, maximum cumulative size of RAM + swap used inside any jail */
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optional uint64 cgroup_mem_memsw_max = 91 [default = 0]; /* In bytes */
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/* If >= 0, maximum cumulative size of swap used inside any jail */
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optional int64 cgroup_mem_swap_max = 92 [default = -1]; /* In bytes */
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/* Mount point for cgroups-memory in your system */
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optional string cgroup_mem_mount = 68 [default = "/sys/fs/cgroup/memory"];
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/* Writeable directory (for the nsjail user) under cgroup_mem_mount */
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optional string cgroup_mem_parent = 69 [default = "NSJAIL"];
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/* If > 0, maximum number of PIDs (threads/processes) inside jail */
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optional uint64 cgroup_pids_max = 70 [default = 0];
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/* Mount point for cgroups-pids in your system */
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optional string cgroup_pids_mount = 71 [default = "/sys/fs/cgroup/pids"];
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/* Writeable directory (for the nsjail user) under cgroup_pids_mount */
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optional string cgroup_pids_parent = 72 [default = "NSJAIL"];
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/* If > 0, Class identifier of network packets inside jail */
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optional uint32 cgroup_net_cls_classid = 73 [default = 0];
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/* Mount point for cgroups-net-cls in your system */
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optional string cgroup_net_cls_mount = 74 [default = "/sys/fs/cgroup/net_cls"];
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/* Writeable directory (for the nsjail user) under cgroup_net_mount */
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optional string cgroup_net_cls_parent = 75 [default = "NSJAIL"];
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/* If > 0, number of milliseconds of CPU time per second that jailed processes can use */
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optional uint32 cgroup_cpu_ms_per_sec = 76 [default = 0];
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/* Mount point for cgroups-cpu in your system */
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optional string cgroup_cpu_mount = 77 [default = "/sys/fs/cgroup/cpu"];
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/* Writeable directory (for the nsjail user) under cgroup_cpu_mount */
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optional string cgroup_cpu_parent = 78 [default = "NSJAIL"];
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/* Mount point for cgroup v2 in your system */
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optional string cgroupv2_mount = 79 [default = "/sys/fs/cgroup"];
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/* Use cgroup v2 */
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optional bool use_cgroupv2 = 80 [default = false];
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/* Should the 'lo' interface be brought up (active) inside this jail? */
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optional bool iface_no_lo = 81 [default = false];
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/* Put this interface inside the jail */
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repeated string iface_own = 82;
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/* Parameters for the cloned MACVLAN interface inside jail */
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optional string macvlan_iface = 83; /* Interface to be cloned, eg 'eth0' */
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optional string macvlan_vs_ip = 84 [default = "192.168.0.2"];
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optional string macvlan_vs_nm = 85 [default = "255.255.255.0"];
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optional string macvlan_vs_gw = 86 [default = "192.168.0.1"];
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optional string macvlan_vs_ma = 87 [default = ""];
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optional string macvlan_vs_mo = 88 [default = "private"];
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/* Niceness level of the jailed process */
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optional int32 nice_level = 89 [default = 19];
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/* Binary path (with arguments) to be executed. If not specified here, it
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can be specified with cmd-line as "-- /path/to/command arg1 arg2" */
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optional Exe exec_bin = 90;
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optional bool disable_tsc = 93 [default = false];
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}
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