#include "exit-status.h"
#include "missing.h"
#include "utmp-wtmp.h"
+#include "def.h"
/* This assumes there is a 'tty' group */
#define TTY_MODE 0620
zero(sa);
sa.sa.sa_family = AF_UNIX;
- strncpy(sa.un.sun_path+1, LOGGER_SOCKET, sizeof(sa.un.sun_path)-1);
+ strncpy(sa.un.sun_path, LOGGER_SOCKET, sizeof(sa.un.sun_path));
- if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + sizeof(LOGGER_SOCKET) - 1) < 0) {
+ if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + sizeof(LOGGER_SOCKET) - 1) < 0) {
close_nointr_nofail(fd);
return -errno;
}
char **i;
/* Final step, initialize any manually set supplementary groups */
- ngroups_max = (int) sysconf(_SC_NGROUPS_MAX);
+ assert_se((ngroups_max = (int) sysconf(_SC_NGROUPS_MAX)) > 0);
if (!(gids = new(gid_t, ngroups_max)))
return -ENOMEM;
int r;
char *line;
int socket_fd;
+ char **files_env = NULL;
assert(command);
assert(context);
} else
socket_fd = -1;
+ if ((r = exec_context_load_environment(context, &files_env)) < 0) {
+ log_error("Failed to load environment files: %s", strerror(-r));
+ return r;
+ }
+
if (!argv)
argv = command->argv;
- if (!(line = exec_command_line(argv)))
- return -ENOMEM;
+ if (!(line = exec_command_line(argv))) {
+ r = -ENOMEM;
+ goto fail_parent;
+ }
log_debug("About to execute: %s", line);
free(line);
if (cgroup_bondings)
if ((r = cgroup_bonding_realize_list(cgroup_bondings)))
- return r;
+ goto fail_parent;
- if ((pid = fork()) < 0)
- return -errno;
+ if ((pid = fork()) < 0) {
+ r = -errno;
+ goto fail_parent;
+ }
if (pid == 0) {
int i;
/* This string must fit in 10 chars (i.e. the length
* of "/sbin/init") */
- rename_process("sd:exec");
+ rename_process("sd.exec");
/* We reset exactly these signals, since they are the
* only ones we set to SIG_IGN in the main daemon. All
if (sigemptyset(&ss) < 0 ||
sigprocmask(SIG_SETMASK, &ss, NULL) < 0) {
r = EXIT_SIGNAL_MASK;
- goto fail;
+ goto fail_child;
}
/* Close sockets very early to make sure we don't
if (close_all_fds(socket_fd >= 0 ? &socket_fd : fds,
socket_fd >= 0 ? 1 : n_fds) < 0) {
r = EXIT_FDS;
- goto fail;
+ goto fail_child;
}
if (!context->same_pgrp)
if (setsid() < 0) {
r = EXIT_SETSID;
- goto fail;
+ goto fail_child;
}
if (context->tcpwrap_name) {
if (socket_fd >= 0)
if (!socket_tcpwrap(socket_fd, context->tcpwrap_name)) {
r = EXIT_TCPWRAP;
- goto fail;
+ goto fail_child;
}
for (i = 0; i < (int) n_fds; i++) {
if (!socket_tcpwrap(fds[i], context->tcpwrap_name)) {
r = EXIT_TCPWRAP;
- goto fail;
+ goto fail_child;
}
}
}
/* Set up terminal for the question */
if ((r = setup_confirm_stdio(context,
&saved_stdin, &saved_stdout)))
- goto fail;
+ goto fail_child;
/* Now ask the question. */
if (!(line = exec_command_line(argv))) {
r = EXIT_MEMORY;
- goto fail;
+ goto fail_child;
}
r = ask(&response, "yns", "Execute %s? [Yes, No, Skip] ", line);
if (r < 0 || response == 'n') {
r = EXIT_CONFIRM;
- goto fail;
+ goto fail_child;
} else if (response == 's') {
r = 0;
- goto fail;
+ goto fail_child;
}
/* Release terminal for the question */
if ((r = restore_confirm_stdio(context,
&saved_stdin, &saved_stdout,
&keep_stdin, &keep_stdout)))
- goto fail;
+ goto fail_child;
}
/* If a socket is connected to STDIN/STDOUT/STDERR, we
if (!keep_stdin)
if (setup_input(context, socket_fd, apply_tty_stdin) < 0) {
r = EXIT_STDIN;
- goto fail;
+ goto fail_child;
}
if (!keep_stdout)
if (setup_output(context, socket_fd, file_name_from_path(command->path), apply_tty_stdin) < 0) {
r = EXIT_STDOUT;
- goto fail;
+ goto fail_child;
}
if (setup_error(context, socket_fd, file_name_from_path(command->path), apply_tty_stdin) < 0) {
r = EXIT_STDERR;
- goto fail;
+ goto fail_child;
}
if (cgroup_bondings)
if (cgroup_bonding_install_list(cgroup_bondings, 0) < 0) {
r = EXIT_CGROUP;
- goto fail;
+ goto fail_child;
}
if (context->oom_score_adjust_set) {
if (write_one_line_file("/proc/self/oom_adj", t) < 0) {
r = EXIT_OOM_ADJUST;
- goto fail;
+ goto fail_child;
}
}
}
if (context->nice_set)
if (setpriority(PRIO_PROCESS, 0, context->nice) < 0) {
r = EXIT_NICE;
- goto fail;
+ goto fail_child;
}
if (context->cpu_sched_set) {
if (sched_setscheduler(0, context->cpu_sched_policy |
(context->cpu_sched_reset_on_fork ? SCHED_RESET_ON_FORK : 0), ¶m) < 0) {
r = EXIT_SETSCHEDULER;
- goto fail;
+ goto fail_child;
}
}
if (context->cpuset)
if (sched_setaffinity(0, CPU_ALLOC_SIZE(context->cpuset_ncpus), context->cpuset) < 0) {
r = EXIT_CPUAFFINITY;
- goto fail;
+ goto fail_child;
}
if (context->ioprio_set)
if (ioprio_set(IOPRIO_WHO_PROCESS, 0, context->ioprio) < 0) {
r = EXIT_IOPRIO;
- goto fail;
+ goto fail_child;
}
if (context->timer_slack_nsec_set)
if (prctl(PR_SET_TIMERSLACK, context->timer_slack_nsec) < 0) {
r = EXIT_TIMERSLACK;
- goto fail;
+ goto fail_child;
}
if (context->utmp_id)
username = context->user;
if (get_user_creds(&username, &uid, &gid, &home) < 0) {
r = EXIT_USER;
- goto fail;
+ goto fail_child;
}
if (is_terminal_input(context->std_input))
if (chown_terminal(STDIN_FILENO, uid) < 0) {
r = EXIT_STDIN;
- goto fail;
+ goto fail_child;
}
}
if (context->pam_name && username) {
if (setup_pam(context->pam_name, username, context->tty_path, &pam_env, fds, n_fds) < 0) {
r = EXIT_PAM;
- goto fail;
+ goto fail_child;
}
}
#endif
if (apply_permissions)
if (enforce_groups(context, username, uid) < 0) {
r = EXIT_GROUP;
- goto fail;
+ goto fail_child;
}
umask(context->umask);
context->inaccessible_dirs,
context->private_tmp,
context->mount_flags)) < 0)
- goto fail;
+ goto fail_child;
if (apply_chroot) {
if (context->root_directory)
if (chroot(context->root_directory) < 0) {
r = EXIT_CHROOT;
- goto fail;
+ goto fail_child;
}
if (chdir(context->working_directory ? context->working_directory : "/") < 0) {
r = EXIT_CHDIR;
- goto fail;
+ goto fail_child;
}
} else {
context->root_directory ? context->root_directory : "",
context->working_directory ? context->working_directory : "") < 0) {
r = EXIT_MEMORY;
- goto fail;
+ goto fail_child;
}
if (chdir(d) < 0) {
free(d);
r = EXIT_CHDIR;
- goto fail;
+ goto fail_child;
}
free(d);
shift_fds(fds, n_fds) < 0 ||
flags_fds(fds, n_fds, context->non_blocking) < 0) {
r = EXIT_FDS;
- goto fail;
+ goto fail_child;
}
if (apply_permissions) {
if (setrlimit(i, context->rlimit[i]) < 0) {
r = EXIT_LIMITS;
- goto fail;
+ goto fail_child;
}
}
+ if (context->capability_bounding_set_drop)
+ for (i = 0; i <= CAP_LAST_CAP; i++)
+ if (context->capability_bounding_set_drop & ((uint64_t) 1ULL << (uint64_t) i)) {
+ if (prctl(PR_CAPBSET_DROP, i) < 0) {
+ r = EXIT_CAPABILITIES;
+ goto fail_child;
+ }
+ }
+
if (context->user)
if (enforce_user(context, uid) < 0) {
r = EXIT_USER;
- goto fail;
+ goto fail_child;
}
/* PR_GET_SECUREBITS is not privileged, while
if (prctl(PR_GET_SECUREBITS) != context->secure_bits)
if (prctl(PR_SET_SECUREBITS, context->secure_bits) < 0) {
r = EXIT_SECUREBITS;
- goto fail;
+ goto fail_child;
}
if (context->capabilities)
if (cap_set_proc(context->capabilities) < 0) {
r = EXIT_CAPABILITIES;
- goto fail;
+ goto fail_child;
}
}
if (!(our_env = new0(char*, 7))) {
r = EXIT_MEMORY;
- goto fail;
+ goto fail_child;
}
if (n_fds > 0)
if (asprintf(our_env + n_env++, "LISTEN_PID=%lu", (unsigned long) getpid()) < 0 ||
asprintf(our_env + n_env++, "LISTEN_FDS=%u", n_fds) < 0) {
r = EXIT_MEMORY;
- goto fail;
+ goto fail_child;
}
if (home)
if (asprintf(our_env + n_env++, "HOME=%s", home) < 0) {
r = EXIT_MEMORY;
- goto fail;
+ goto fail_child;
}
if (username)
if (asprintf(our_env + n_env++, "LOGNAME=%s", username) < 0 ||
asprintf(our_env + n_env++, "USER=%s", username) < 0) {
r = EXIT_MEMORY;
- goto fail;
+ goto fail_child;
}
if (is_terminal_input(context->std_input) ||
context->std_error == EXEC_OUTPUT_TTY)
if (!(our_env[n_env++] = strdup(default_term_for_tty(tty_path(context))))) {
r = EXIT_MEMORY;
- goto fail;
+ goto fail_child;
}
assert(n_env <= 7);
if (!(final_env = strv_env_merge(
- 4,
+ 5,
environment,
our_env,
context->environment,
+ files_env,
pam_env,
NULL))) {
r = EXIT_MEMORY;
- goto fail;
+ goto fail_child;
}
if (!(final_argv = replace_env_argv(argv, final_env))) {
r = EXIT_MEMORY;
- goto fail;
+ goto fail_child;
}
final_env = strv_env_clean(final_env);
execve(command->path, final_argv, final_env);
r = EXIT_EXEC;
- fail:
+ fail_child:
strv_free(our_env);
strv_free(final_env);
strv_free(pam_env);
+ strv_free(files_env);
strv_free(final_argv);
if (saved_stdin >= 0)
_exit(r);
}
+ strv_free(files_env);
+
/* We add the new process to the cgroup both in the child (so
* that we can be sure that no user code is ever executed
* outside of the cgroup) and in the parent (so that we can be
*ret = pid;
return 0;
+
+fail_parent:
+ strv_free(files_env);
+
+ return r;
}
void exec_context_init(ExecContext *c) {
strv_free(c->environment);
c->environment = NULL;
+ strv_free(c->environment_files);
+ c->environment_files = NULL;
+
for (l = 0; l < ELEMENTSOF(c->rlimit); l++) {
free(c->rlimit[l]);
c->rlimit[l] = NULL;
}
}
+int exec_context_load_environment(const ExecContext *c, char ***l) {
+ char **i, **r = NULL;
+
+ assert(c);
+ assert(l);
+
+ STRV_FOREACH(i, c->environment_files) {
+ char *fn;
+ int k;
+ bool ignore = false;
+ char **p;
+
+ fn = *i;
+
+ if (fn[0] == '-') {
+ ignore = true;
+ fn ++;
+ }
+
+ if (!path_is_absolute(fn)) {
+
+ if (ignore)
+ continue;
+
+ strv_free(r);
+ return -EINVAL;
+ }
+
+ if ((k = load_env_file(fn, &p)) < 0) {
+
+ if (ignore)
+ continue;
+
+ strv_free(r);
+ return k;
+ }
+
+ if (r == NULL)
+ r = p;
+ else {
+ char **m;
+
+ m = strv_env_merge(2, r, p);
+ strv_free(r);
+ strv_free(p);
+
+ if (!m)
+ return -ENOMEM;
+
+ r = m;
+ }
+ }
+
+ *l = r;
+
+ return 0;
+}
+
static void strv_fprintf(FILE *f, char **l) {
char **g;
prefix, yes_no(c->non_blocking),
prefix, yes_no(c->private_tmp));
- if (c->environment)
- for (e = c->environment; *e; e++)
- fprintf(f, "%sEnvironment: %s\n", prefix, *e);
+ STRV_FOREACH(e, c->environment)
+ fprintf(f, "%sEnvironment: %s\n", prefix, *e);
+
+ STRV_FOREACH(e, c->environment_files)
+ fprintf(f, "%sEnvironmentFile: %s\n", prefix, *e);
if (c->tcpwrap_name)
fprintf(f,
fprintf(f,
"%sSyslogFacility: %s\n"
"%sSyslogLevel: %s\n",
- prefix, log_facility_to_string(LOG_FAC(c->syslog_priority)),
+ prefix, log_facility_unshifted_to_string(c->syslog_priority >> 3),
prefix, log_level_to_string(LOG_PRI(c->syslog_priority)));
if (c->capabilities) {
(c->secure_bits & SECURE_NOROOT_LOCKED) ? "noroot-locked" : "");
if (c->capability_bounding_set_drop) {
- fprintf(f, "%sCapabilityBoundingSetDrop:", prefix);
+ fprintf(f, "%sCapabilityBoundingSet:", prefix);
for (i = 0; i <= CAP_LAST_CAP; i++)
- if (c->capability_bounding_set_drop & (1 << i)) {
+ if (!(c->capability_bounding_set_drop & ((uint64_t) 1ULL << (uint64_t) i))) {
char *t;
if ((t = cap_to_name(i))) {
fprintf(f, " %s", t);
- free(t);
+ cap_free(t);
}
}
static const char* const kill_mode_table[_KILL_MODE_MAX] = {
[KILL_CONTROL_GROUP] = "control-group",
- [KILL_PROCESS_GROUP] = "process-group",
[KILL_PROCESS] = "process",
[KILL_NONE] = "none"
};
~ianmdlvl / elogind.git / blobdiff