/
profile.c
1555 lines (1414 loc) · 36.1 KB
/
profile.c
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/*
* Copyright (C) 2014-2020 Firejail Authors
*
* This file is part of firejail project
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "firejail.h"
#include <dirent.h>
#include <sys/stat.h>
extern char *xephyr_screen;
#define MAX_READ 8192 // line buffer for profile files
// find and read the profile specified by name from dir directory
// return 1 if a profile was found
static int profile_find(const char *name, const char *dir, int add_ext) {
EUID_ASSERT();
assert(name);
assert(dir);
int rv = 0;
DIR *dp;
char *pname = NULL;
if (add_ext) {
if (asprintf(&pname, "%s.profile", name) == -1)
errExit("asprintf");
else
name = pname;
}
dp = opendir (dir);
if (dp != NULL) {
struct dirent *ep;
while ((ep = readdir(dp)) != NULL) {
if (strcmp(ep->d_name, name) == 0) {
if (arg_debug)
printf("Found %s profile in %s directory\n", name, dir);
char *etcpname;
if (asprintf(&etcpname, "%s/%s", dir, name) == -1)
errExit("asprintf");
profile_read(etcpname);
free(etcpname);
rv = 1;
break;
}
}
(void) closedir (dp);
}
if (pname)
free(pname);
return rv;
}
// search and read the profile specified by name from firejail directories
// return 1 if a profile was found
int profile_find_firejail(const char *name, int add_ext) {
// look for a profile in ~/.config/firejail directory
char *usercfgdir;
if (asprintf(&usercfgdir, "%s/.config/firejail", cfg.homedir) == -1)
errExit("asprintf");
int rv = profile_find(name, usercfgdir, add_ext);
free(usercfgdir);
if (!rv)
// look for a user profile in /etc/firejail directory
rv = profile_find(name, SYSCONFDIR, add_ext);
return rv;
}
//***************************************************
// run-time profiles
//***************************************************
static void warning_feature_disabled(const char *feature) {
fwarning("%s feature is disabled in Firejail configuration file\n", feature);
}
static int is_in_ignore_list(char *ptr) {
// check ignore list
int i;
for (i = 0; i < MAX_PROFILE_IGNORE; i++) {
if (cfg.profile_ignore[i] == NULL)
break;
int len = strlen(cfg.profile_ignore[i]);
if (strncmp(ptr, cfg.profile_ignore[i], len) == 0) {
// full word match
if (*(ptr + len) == '\0' || *(ptr + len) == ' ')
return 1; // ignore line
}
}
return 0;
}
void profile_add_ignore(const char *str) {
assert(str);
if (*str == '\0') {
fprintf(stderr, "Error: invalid ignore option\n");
exit(1);
}
// find an empty entry in profile_ignore array
int i;
for (i = 0; i < MAX_PROFILE_IGNORE; i++) {
if (cfg.profile_ignore[i] == NULL)
break;
}
if (i >= MAX_PROFILE_IGNORE) {
fprintf(stderr, "Error: maximum %d --ignore options are permitted\n", MAX_PROFILE_IGNORE);
exit(1);
}
// ... and configure it
else {
cfg.profile_ignore[i] = strdup(str);
if (!cfg.profile_ignore[i])
errExit("strdup");
}
}
typedef struct cond_t {
const char *name; // conditional name
int (*check)(void); // true if set
} Cond;
static int check_appimage(void) {
return arg_appimage != 0;
}
static int check_netoptions(void) {
return (arg_nonetwork || any_bridge_configured());
}
static int check_nodbus(void) {
return arg_nodbus != 0;
}
static int check_nosound(void) {
return arg_nosound != 0;
}
static int check_x11(void) {
return (arg_x11_block || arg_x11_xorg || getenv("FIREJAIL_X11"));
}
static int check_disable_u2f(void) {
return checkcfg(CFG_BROWSER_DISABLE_U2F) != 0;
}
static int check_allow_drm(void) {
return checkcfg(CFG_BROWSER_ALLOW_DRM) != 0;
}
Cond conditionals[] = {
{"HAS_APPIMAGE", check_appimage},
{"HAS_NET", check_netoptions},
{"HAS_NODBUS", check_nodbus},
{"HAS_NOSOUND", check_nosound},
{"HAS_X11", check_x11},
{"BROWSER_DISABLE_U2F", check_disable_u2f},
{"BROWSER_ALLOW_DRM", check_allow_drm},
{ NULL, NULL }
};
int profile_check_conditional(char *ptr, int lineno, const char *fname) {
char *tmp = ptr, *msg = NULL;
if (*ptr++ != '?')
return 1;
Cond *cond = conditionals;
while (cond->name) {
// continue if not this conditional
if (strncmp(ptr, cond->name, strlen(cond->name)) != 0) {
cond++;
continue;
}
ptr += strlen(cond->name);
if (*ptr == ' ')
ptr++;
if (*ptr++ != ':') {
msg = "invalid conditional syntax: colon must come after conditional";
ptr = tmp;
goto error;
}
if (*ptr == '\0') {
msg = "invalid conditional syntax: no profile line after conditional";
ptr = tmp;
goto error;
}
if (*ptr == ' ')
ptr++;
// if set, continue processing statement in caller
int value = cond->check();
if (value) {
// move ptr to start of profile line
ptr = strdup(ptr);
if (!ptr)
errExit("strdup");
// check that the profile line does not contain either
// quiet or include directives
if ((strncmp(ptr, "quiet", 5) == 0) ||
(strncmp(ptr, "include", 7) == 0)) {
msg = "invalid conditional syntax: quiet and include not allowed in conditionals";
ptr = tmp;
goto error;
}
free(tmp);
// verify syntax, exit in case of error
if (arg_debug)
printf("conditional %s, %s\n", cond->name, ptr);
if (profile_check_line(ptr, lineno, fname))
profile_add(ptr);
}
// tell caller to ignore
return 0;
}
tmp = ptr;
// get the conditional used
while (*tmp != ':' && *tmp != '\0')
tmp++;
*tmp = '\0';
// this was a '?' prefix, but didn't match any of the conditionals
msg = "invalid/unsupported conditional";
error:
fprintf(stderr, "Error: %s (\"%s\"", msg, ptr);
if (lineno == 0) ;
else if (fname != NULL)
fprintf(stderr, " on line %d in %s", lineno, fname);
else
fprintf(stderr, " on line %d in the custom profile", lineno);
fprintf(stderr, ")\n");
exit(1);
}
// check profile line; if line == 0, this was generated from a command line option
// return 1 if the command is to be added to the linked list of profile commands
// return 0 if the command was already executed inside the function
int profile_check_line(char *ptr, int lineno, const char *fname) {
EUID_ASSERT();
// check and process conditional profile lines
if (profile_check_conditional(ptr, lineno, fname) == 0)
return 0;
// check ignore list
if (is_in_ignore_list(ptr))
return 0;
if (strncmp(ptr, "ignore ", 7) == 0) {
profile_add_ignore(ptr + 7);
return 0;
}
if (strncmp(ptr, "xephyr-screen ", 14) == 0) {
#ifdef HAVE_X11
if (checkcfg(CFG_X11)) {
xephyr_screen = ptr + 14;
}
else
warning_feature_disabled("x11");
#endif
return 0;
}
// mkdir
if (strncmp(ptr, "mkdir ", 6) == 0) {
fs_mkdir(ptr + 6);
return 1; // process mkdir again while applying blacklists
}
// mkfile
if (strncmp(ptr, "mkfile ", 7) == 0) {
fs_mkfile(ptr + 7);
return 1; // process mkfile again while applying blacklists
}
// sandbox name
else if (strncmp(ptr, "name ", 5) == 0) {
cfg.name = ptr + 5;
if (strlen(cfg.name) == 0) {
fprintf(stderr, "Error: invalid sandbox name\n");
exit(1);
}
return 0;
}
else if (strcmp(ptr, "ipc-namespace") == 0) {
arg_ipc = 1;
return 0;
}
// seccomp, caps, private, user namespace
else if (strcmp(ptr, "noroot") == 0) {
#if HAVE_USERNS
if (checkcfg(CFG_USERNS))
check_user_namespace();
else
warning_feature_disabled("noroot");
#endif
return 0;
}
else if (strcmp(ptr, "nonewprivs") == 0) {
arg_nonewprivs = 1;
return 0;
}
else if (strcmp(ptr, "seccomp") == 0) {
#ifdef HAVE_SECCOMP
if (checkcfg(CFG_SECCOMP))
arg_seccomp = 1;
else
warning_feature_disabled("seccomp");
#endif
return 0;
}
else if (strcmp(ptr, "caps") == 0) {
arg_caps_default_filter = 1;
return 0;
}
else if (strcmp(ptr, "caps.drop all") == 0) {
arg_caps_drop_all = 1;
return 0;
}
else if (strcmp(ptr, "shell none") == 0) {
arg_shell_none = 1;
return 0;
}
else if (strcmp(ptr, "tracelog") == 0) {
arg_tracelog = 1;
return 0;
}
else if (strcmp(ptr, "private") == 0) {
arg_private = 1;
return 0;
}
else if (strncmp(ptr, "private-home ", 13) == 0) {
#ifdef HAVE_PRIVATE_HOME
if (checkcfg(CFG_PRIVATE_HOME)) {
if (cfg.home_private_keep) {
if ( asprintf(&cfg.home_private_keep, "%s,%s", cfg.home_private_keep, ptr + 13) < 0 )
errExit("asprintf");
} else
cfg.home_private_keep = ptr + 13;
arg_private = 1;
}
else
warning_feature_disabled("private-home");
#endif
return 0;
}
else if (strcmp(ptr, "private-cwd") == 0) {
cfg.cwd = NULL;
arg_private_cwd = 1;
return 0;
}
else if (strncmp(ptr, "private-cwd ", 12) == 0) {
fs_check_private_cwd(ptr + 12);
arg_private_cwd = 1;
return 0;
}
else if (strcmp(ptr, "allusers") == 0) {
arg_allusers = 1;
return 0;
}
else if (strcmp(ptr, "private-cache") == 0) {
if (checkcfg(CFG_PRIVATE_CACHE))
arg_private_cache = 1;
else
warning_feature_disabled("private-cache");
return 0;
}
else if (strcmp(ptr, "private-dev") == 0) {
arg_private_dev = 1;
return 0;
}
else if (strcmp(ptr, "keep-dev-shm") == 0) {
arg_keep_dev_shm = 1;
return 0;
}
else if (strcmp(ptr, "private-tmp") == 0) {
arg_private_tmp = 1;
return 0;
}
else if (strcmp(ptr, "nogroups") == 0) {
arg_nogroups = 1;
return 0;
}
else if (strcmp(ptr, "nosound") == 0) {
arg_nosound = 1;
return 0;
}
else if (strcmp(ptr, "noautopulse") == 0) {
arg_noautopulse = 1;
return 0;
}
else if (strcmp(ptr, "notv") == 0) {
arg_notv = 1;
return 0;
}
else if (strcmp(ptr, "nodvd") == 0) {
arg_nodvd = 1;
return 0;
}
else if (strcmp(ptr, "novideo") == 0) {
arg_novideo = 1;
return 0;
}
else if (strcmp(ptr, "no3d") == 0) {
arg_no3d = 1;
return 0;
}
else if (strcmp(ptr, "nodbus") == 0) {
arg_nodbus = 1;
return 0;
}
else if (strcmp(ptr, "nou2f") == 0) {
arg_nou2f = 1;
return 0;
}
else if (strcmp(ptr, "netfilter") == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK))
arg_netfilter = 1;
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "netfilter ", 10) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
arg_netfilter = 1;
arg_netfilter_file = strdup(ptr + 10);
if (!arg_netfilter_file)
errExit("strdup");
check_netfilter_file(arg_netfilter_file);
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "netfilter6 ", 11) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
arg_netfilter6 = 1;
arg_netfilter6_file = strdup(ptr + 11);
if (!arg_netfilter6_file)
errExit("strdup");
check_netfilter_file(arg_netfilter6_file);
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strcmp(ptr, "net none") == 0) {
arg_nonetwork = 1;
cfg.bridge0.configured = 0;
cfg.bridge1.configured = 0;
cfg.bridge2.configured = 0;
cfg.bridge3.configured = 0;
cfg.interface0.configured = 0;
cfg.interface1.configured = 0;
cfg.interface2.configured = 0;
cfg.interface3.configured = 0;
return 0;
}
else if (strncmp(ptr, "net ", 4) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
if (strcmp(ptr + 4, "lo") == 0) {
fprintf(stderr, "Error: cannot attach to lo device\n");
exit(1);
}
Bridge *br;
if (cfg.bridge0.configured == 0)
br = &cfg.bridge0;
else if (cfg.bridge1.configured == 0)
br = &cfg.bridge1;
else if (cfg.bridge2.configured == 0)
br = &cfg.bridge2;
else if (cfg.bridge3.configured == 0)
br = &cfg.bridge3;
else {
fprintf(stderr, "Error: maximum 4 network devices are allowed\n");
exit(1);
}
br->dev = ptr + 4;
br->configured = 1;
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "veth-name ", 10) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
Bridge *br = last_bridge_configured();
if (br == NULL) {
fprintf(stderr, "Error: no network device configured\n");
exit(1);
}
br->veth_name = strdup(ptr + 10);
if (br->veth_name == NULL)
errExit("strdup");
if (*br->veth_name == '\0') {
fprintf(stderr, "Error: no veth-name configured\n");
exit(1);
}
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "iprange ", 8) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
Bridge *br = last_bridge_configured();
if (br == NULL) {
fprintf(stderr, "Error: no network device configured\n");
exit(1);
}
if (br->iprange_start || br->iprange_end) {
fprintf(stderr, "Error: cannot configure the IP range twice for the same interface\n");
exit(1);
}
// parse option arguments
char *firstip = ptr + 8;
char *secondip = firstip;
while (*secondip != '\0') {
if (*secondip == ',')
break;
secondip++;
}
if (*secondip == '\0') {
fprintf(stderr, "Error: invalid IP range\n");
exit(1);
}
*secondip = '\0';
secondip++;
// check addresses
if (atoip(firstip, &br->iprange_start) || atoip(secondip, &br->iprange_end) ||
br->iprange_start >= br->iprange_end) {
fprintf(stderr, "Error: invalid IP range\n");
exit(1);
}
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "mac ", 4) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
Bridge *br = last_bridge_configured();
if (br == NULL) {
fprintf(stderr, "Error: no network device configured\n");
exit(1);
}
if (mac_not_zero(br->macsandbox)) {
fprintf(stderr, "Error: cannot configure the MAC address twice for the same interface\n");
exit(1);
}
// read the address
if (atomac(ptr + 4, br->macsandbox)) {
fprintf(stderr, "Error: invalid MAC address\n");
exit(1);
}
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "mtu ", 4) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
Bridge *br = last_bridge_configured();
if (br == NULL) {
fprintf(stderr, "Error: no network device configured\n");
exit(1);
}
if (sscanf(ptr + 4, "%d", &br->mtu) != 1 || br->mtu < 576 || br->mtu > 9198) {
fprintf(stderr, "Error: invalid mtu value\n");
exit(1);
}
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "netmask ", 8) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
Bridge *br = last_bridge_configured();
if (br == NULL) {
fprintf(stderr, "Error: no network device configured\n");
exit(1);
}
if (br->arg_ip_none || br->masksandbox) {
fprintf(stderr, "Error: cannot configure the network mask twice for the same interface\n");
exit(1);
}
// configure this network mask for the last bridge defined
if (atoip(ptr + 8, &br->masksandbox)) {
fprintf(stderr, "Error: invalid network mask\n");
exit(1);
}
// if the bridge is not configured, use this mask as the bridge mask
if (br->mask == 0)
br->mask = br->masksandbox;
else {
fprintf(stderr, "Error: interface %s already has a network mask defined; "
"please remove --netmask\n",
br->dev);
exit(1);
}
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "ip ", 3) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
Bridge *br = last_bridge_configured();
if (br == NULL) {
fprintf(stderr, "Error: no network device configured\n");
exit(1);
}
if (br->arg_ip_none || br->ipsandbox) {
fprintf(stderr, "Error: cannot configure the IP address twice for the same interface\n");
exit(1);
}
// configure this IP address for the last bridge defined
if (strcmp(ptr + 3, "none") == 0)
br->arg_ip_none = 1;
else if (strcmp(ptr + 3, "dhcp") == 0) {
br->arg_ip_none = 1;
br->arg_ip_dhcp = 1;
} else {
if (atoip(ptr + 3, &br->ipsandbox)) {
fprintf(stderr, "Error: invalid IP address\n");
exit(1);
}
}
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "ip6 ", 4) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
Bridge *br = last_bridge_configured();
if (br == NULL) {
fprintf(stderr, "Error: no network device configured\n");
exit(1);
}
if (br->arg_ip6_dhcp || br->ip6sandbox) {
fprintf(stderr, "Error: cannot configure the IP address twice for the same interface\n");
exit(1);
}
// configure this IP address for the last bridge defined
if (strcmp(ptr + 4, "dhcp") == 0)
br->arg_ip6_dhcp = 1;
else {
if (check_ip46_address(ptr + 4) == 0) {
fprintf(stderr, "Error: invalid IPv6 address\n");
exit(1);
}
br->ip6sandbox = strdup(ptr + 4);
if (br->ip6sandbox == NULL)
errExit("strdup");
}
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
else if (strncmp(ptr, "defaultgw ", 10) == 0) {
#ifdef HAVE_NETWORK
if (checkcfg(CFG_NETWORK)) {
if (atoip(ptr + 10, &cfg.defaultgw)) {
fprintf(stderr, "Error: invalid IP address\n");
exit(1);
}
}
else
warning_feature_disabled("networking");
#endif
return 0;
}
if (strcmp(ptr, "apparmor") == 0) {
#ifdef HAVE_APPARMOR
arg_apparmor = 1;
#endif
return 0;
}
if (strncmp(ptr, "protocol ", 9) == 0) {
#ifdef HAVE_SECCOMP
if (checkcfg(CFG_SECCOMP)) {
if (cfg.protocol) {
fwarning("two protocol lists are present, \"%s\" will be installed\n", cfg.protocol);
return 0;
}
// store list
cfg.protocol = strdup(ptr + 9);
if (!cfg.protocol)
errExit("strdup");
}
else
warning_feature_disabled("seccomp");
#endif
return 0;
}
if (strncmp(ptr, "env ", 4) == 0) {
env_store(ptr + 4, SETENV);
return 0;
}
if (strncmp(ptr, "rmenv ", 6) == 0) {
env_store(ptr + 6, RMENV);
return 0;
}
// seccomp drop list on top of default list
if (strncmp(ptr, "seccomp ", 8) == 0) {
#ifdef HAVE_SECCOMP
if (checkcfg(CFG_SECCOMP)) {
arg_seccomp = 1;
cfg.seccomp_list = seccomp_check_list(ptr + 8);
}
else if (!arg_quiet)
warning_feature_disabled("seccomp");
#endif
return 0;
}
if (strcmp(ptr, "seccomp.block-secondary") == 0) {
#ifdef HAVE_SECCOMP
if (checkcfg(CFG_SECCOMP)) {
arg_seccomp_block_secondary = 1;
}
else
warning_feature_disabled("seccomp");
#endif
return 0;
}
// seccomp drop list without default list
if (strncmp(ptr, "seccomp.drop ", 13) == 0) {
#ifdef HAVE_SECCOMP
if (checkcfg(CFG_SECCOMP)) {
arg_seccomp = 1;
cfg.seccomp_list_drop = seccomp_check_list(ptr + 13);
}
else
warning_feature_disabled("seccomp");
#endif
return 0;
}
// seccomp keep list
if (strncmp(ptr, "seccomp.keep ", 13) == 0) {
#ifdef HAVE_SECCOMP
if (checkcfg(CFG_SECCOMP)) {
arg_seccomp = 1;
cfg.seccomp_list_keep= seccomp_check_list(ptr + 13);
}
else
warning_feature_disabled("seccomp");
#endif
return 0;
}
// memory deny write&execute
if (strcmp(ptr, "memory-deny-write-execute") == 0) {
#ifdef HAVE_SECCOMP
if (checkcfg(CFG_SECCOMP))
arg_memory_deny_write_execute = 1;
else
warning_feature_disabled("seccomp");
#endif
return 0;
}
// caps drop list
if (strncmp(ptr, "caps.drop ", 10) == 0) {
arg_caps_drop = 1;
arg_caps_list = strdup(ptr + 10);
if (!arg_caps_list)
errExit("strdup");
// verify caps list and exit if problems
caps_check_list(arg_caps_list, NULL);
return 0;
}
// caps keep list
if (strncmp(ptr, "caps.keep ", 10) == 0) {
arg_caps_keep = 1;
arg_caps_list = strdup(ptr + 10);
if (!arg_caps_list)
errExit("strdup");
// verify caps list and exit if problems
caps_check_list(arg_caps_list, NULL);
return 0;
}
// hostname
if (strncmp(ptr, "hostname ", 9) == 0) {
cfg.hostname = ptr + 9;
return 0;
}
// hosts-file
if (strncmp(ptr, "hosts-file ", 11) == 0) {
cfg.hosts_file = fs_check_hosts_file(ptr + 11);
return 0;
}
// dns
if (strncmp(ptr, "dns ", 4) == 0) {
if (check_ip46_address(ptr + 4) == 0) {
fprintf(stderr, "Error: invalid DNS server IPv4 or IPv6 address\n");
exit(1);
}
char *dns = strdup(ptr + 4);
if (!dns)
errExit("strdup");
if (cfg.dns1 == NULL)
cfg.dns1 = dns;
else if (cfg.dns2 == NULL)
cfg.dns2 = dns;
else if (cfg.dns3 == NULL)
cfg.dns3 = dns;
else if (cfg.dns4 == NULL)
cfg.dns4 = dns;
else {
fwarning("Warning: up to 4 DNS servers can be specified, %s ignored\n", dns);
free(dns);
}
return 0;
}
// cpu affinity
if (strncmp(ptr, "cpu ", 4) == 0) {
read_cpu_list(ptr + 4);
return 0;
}
// nice value
if (strncmp(ptr, "nice ", 5) == 0) {
cfg.nice = atoi(ptr + 5);
if (getuid() != 0 &&cfg.nice < 0)
cfg.nice = 0;
arg_nice = 1;
return 0;
}
// cgroup
if (strncmp(ptr, "cgroup ", 7) == 0) {
if (checkcfg(CFG_CGROUP))
set_cgroup(ptr + 7);
else
warning_feature_disabled("cgroup");
return 0;
}
// writable-etc
if (strcmp(ptr, "writable-etc") == 0) {
if (cfg.etc_private_keep) {
fprintf(stderr, "Error: private-etc and writable-etc are mutually exclusive\n");
exit(1);
}
arg_writable_etc = 1;
return 0;
}
if (strcmp(ptr, "machine-id") == 0) {
arg_machineid = 1;
return 0;
}
// writable-var
if (strcmp(ptr, "writable-var") == 0) {
arg_writable_var = 1;
return 0;
}
// don't overwrite /var/tmp
if (strcmp(ptr, "keep-var-tmp") == 0) {
arg_keep_var_tmp = 1;
return 0;
}
// writable-run-user
if (strcmp(ptr, "writable-run-user") == 0) {
arg_writable_run_user = 1;
return 0;
}
if (strcmp(ptr, "writable-var-log") == 0) {
arg_writable_var_log = 1;
return 0;
}
// private directory
if (strncmp(ptr, "private ", 8) == 0) {
cfg.home_private = ptr + 8;
fs_check_private_dir();
arg_private = 1;
return 0;
}
if (strcmp(ptr, "allow-debuggers") == 0) {
arg_allow_debuggers = 1;
return 0;
}
if (strcmp(ptr, "x11 none") == 0) {
arg_x11_block = 1;
return 0;
}
if (strcmp(ptr, "x11 xephyr") == 0) {
#ifdef HAVE_X11
if (checkcfg(CFG_X11)) {
char *x11env = getenv("FIREJAIL_X11");
if (x11env && strcmp(x11env, "yes") == 0) {
return 0;
}
else {
// start x11
x11_start_xephyr(cfg.original_argc, cfg.original_argv);
exit(0);
}
}
else
warning_feature_disabled("x11");
#endif
return 0;
}
if (strcmp(ptr, "x11 xorg") == 0) {
#ifdef HAVE_X11
if (checkcfg(CFG_X11))
arg_x11_xorg = 1;
else
warning_feature_disabled("x11");
#endif