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/* ISC license. */
#include <string.h>
#include <sys/stat.h>
#include <errno.h>
#include <skalibs/posixplz.h>
#include <skalibs/prog.h>
#include <skalibs/strerr.h>
#include <skalibs/cspawn.h>
#include <skalibs/djbunix.h>
#include <s6/config.h>
#include "s6-internal.h"
#define USAGE "s6 process [ process options ] subcommand [ subcommand options ] services... Type \"s6 process help\" for details."
#define dieusage() strerr_dieusage(100, USAGE)
static int check_service (char const *name, size_t scandirlen)
{
struct stat st ;
size_t namelen = strlen(name) ;
char path[scandirlen + namelen + 2] ;
memcpy(path, g->dirs.scan, scandirlen) ;
path[scandirlen] = '/' ;
memcpy(path + scandirlen + 1, name, namelen) ;
path[scandirlen + 1 + namelen] = 0 ;
return stat(path, &st) == -1 ? errno == ENOENT ? 0 : -1 : !!S_ISDIR(st.st_mode) ;
}
void process_check_services (char const *const *argv, size_t argc)
{
size_t scandirlen = strlen(g->dirs.scan) ;
for (size_t i = 0 ; i < argc ; i++)
{
int r = check_service(argv[i], scandirlen) ;
if (r == -1)
strerr_diefu4sys(111, "stat ", g->dirs.scan, "/", argv[i]) ;
else if (!r)
strerr_dief3x(100, argv[i], "is not registered as a supervised service in ", g->dirs.scan) ;
}
}
int process_send_svc (char const *svcopt, char const *const *argv, size_t argc)
{
char const *newargv[5] = { S6_EXTBINPREFIX "s6-svc", svcopt, "--", 0, 0 } ;
size_t scandirlen = strlen(g->dirs.scan) ;
int wstat ;
pid_t pids[argc] ;
for (size_t i = 0 ; i < argc ; i++)
{
size_t arglen = strlen(argv[i]) ;
char path[scandirlen + arglen + 2] ;
memcpy(path, g->dirs.scan, scandirlen) ;
path[scandirlen] = '/' ;
memcpy(path + scandirlen + 1, argv[i], arglen) ;
path[scandirlen + 1 + arglen] = 0 ;
newargv[3] = path ;
pids[i] = cspawn(newargv[0], newargv, (char const *const *)environ, 0, 0, 0) ;
if (!pids[i])
strerr_diefu4sys(111, "spawn ", newargv[0], " command for service ", argv[i]) ;
}
waitn_posix(pids, argc, &wstat) ;
return 0 ;
}
static struct command_s const process_commands[] =
{
{ .s = "help", .f = &process_help },
{ .s = "kill", .f = &process_kill },
{ .s = "restart", .f = &process_restart },
{ .s = "start", .f = &process_start },
{ .s = "status", .f = &process_status },
{ .s = "stop", .f = &process_stop },
} ;
int process (char const *const *argv)
{
struct command_s *cmd ;
PROG = "s6 process" ;
if (!*argv) dieusage() ;
cmd = BSEARCH(struct command_s, *argv, process_commands) ;
if (!cmd) dieusage() ;
return (*cmd->f)(++argv) ;
}
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