mirror of
https://github.com/pygos/init.git
synced 2024-11-24 12:00:42 +01:00
cleanup: delete remains of libutil
- exec_t belongs to service.h, the main place where it is used/needed - code for executing exec_t is moved to runsvc for the same reason - what is left are NORETURN and ARRAY_SIZE - the former can be replaced with direct attribute usage since the only relevant compilers all support the attribute. - the later is only used in 3 places and can be trivially replaced with direct usage of sizeof(). Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
This commit is contained in:
parent
9f9807d4d3
commit
87a524d931
16 changed files with 67 additions and 104 deletions
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@ -7,7 +7,7 @@ runsvc_SOURCES = cmd/runsvc/runsvc.c cmd/runsvc/env.c cmd/runsvc/runsvc.h
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runsvc_CPPFLAGS = $(AM_CPPFLAGS)
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runsvc_CFLAGS = $(AM_CFLAGS)
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runsvc_LDFLAGS = $(AM_LDFLAGS)
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runsvc_LDADD = libinit.a libcfg.a libutil.a
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runsvc_LDADD = libinit.a libcfg.a
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killall5_SOURCES = cmd/killall5.c
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killall5_CPPFLAGS = $(AM_CPPFLAGS)
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@ -30,7 +30,7 @@ service_SOURCES += $(SRVHEADERS)
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service_CPPFLAGS = $(AM_CPPFLAGS)
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service_CFLAGS = $(AM_CFLAGS)
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service_LDFLAGS = $(AM_LDFLAGS)
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service_LDADD = libinit.a libcfg.a libutil.a
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service_LDADD = libinit.a libcfg.a
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dist_man8_MANS += cmd/shutdown.8 cmd/service/service.8
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@ -9,9 +9,7 @@
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#include <ctype.h>
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#include <errno.h>
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#include "util.h"
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static NORETURN void usage_and_exit(void)
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static __attribute__((noreturn)) void usage_and_exit(void)
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{
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fputs("Usage: killall5 SIGNAL\n", stderr);
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exit(EXIT_FAILURE);
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@ -1,6 +1,49 @@
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/* SPDX-License-Identifier: ISC */
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#include "runsvc.h"
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static int setup_tty(const char *tty, bool truncate)
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{
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int fd;
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if (tty == NULL)
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return 0;
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fd = open(tty, O_RDWR);
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if (fd < 0) {
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perror(tty);
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return -1;
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}
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if (truncate)
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ftruncate(fd, 0);
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close(STDIN_FILENO);
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close(STDOUT_FILENO);
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close(STDERR_FILENO);
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setsid();
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dup2(fd, STDIN_FILENO);
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dup2(fd, STDOUT_FILENO);
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dup2(fd, STDERR_FILENO);
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close(fd);
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return 0;
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}
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static __attribute__((noreturn)) void argv_exec(exec_t *e)
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{
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char **argv = alloca(sizeof(char *) * (e->argc + 1)), *ptr;
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int i;
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for (ptr = e->args, i = 0; i < e->argc; ++i, ptr += strlen(ptr) + 1)
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argv[i] = ptr;
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argv[i] = NULL;
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execvp(argv[0], argv);
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perror(argv[0]);
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exit(EXIT_FAILURE);
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}
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static int run_sequentially(exec_t *list)
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{
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pid_t ret, pid;
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@ -4,6 +4,8 @@
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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@ -12,7 +14,7 @@
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#include "service.h"
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#include "libcfg.h"
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#include "util.h"
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#include "config.h"
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#define ENVFILE ETCPATH "/initd.env"
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@ -5,7 +5,6 @@
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#include "servicecmd.h"
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#include "service.h"
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#include "config.h"
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#include "util.h"
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command_t *commands;
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@ -2,13 +2,14 @@
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#ifndef SERVICECMD_H
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#define SERVICECMD_H
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <ctype.h>
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#include "service.h"
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#include "util.h"
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#include "config.h"
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/*
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Describes a command that can be launched by passing its name as
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@ -45,7 +46,7 @@ service_t *loadsvc(const char *directory, const char *filename, int flags);
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Implemented in servicecmd.c. Prints program usage message and
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terminates with the given exit status.
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*/
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void usage(int status) NORETURN;
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void usage(int status) __attribute__((noreturn));
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/*
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Write a message to stderr that advises the user how to consult the
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@ -10,8 +10,6 @@
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#include <sys/reboot.h>
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#include <linux/reboot.h>
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#include "util.h"
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#define FL_FORCE 0x01
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#define FL_NOSYNC 0x02
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@ -29,7 +27,7 @@ static const char *shortopt = "hprfn";
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static const char *defact_str = "power-off";
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static int defact = RB_POWER_OFF;
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static NORETURN void usage(const char *progname, int status)
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static __attribute__((noreturn)) void usage(const char *progname, int status)
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{
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fprintf(status == EXIT_SUCCESS ? stdout : stderr,
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"%s [OPTIONS...]\n\n"
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@ -3,6 +3,6 @@ init_SOURCES += initd/status.c initd/supervisor.c initd/initsock.c
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init_CPPFLAGS = $(AM_CPPFLAGS)
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init_CFLAGS = $(AM_CFLAGS)
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init_LDFLAGS = $(AM_LDFLAGS)
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init_LDADD = libinit.a libcfg.a libutil.a
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init_LDADD = libinit.a libcfg.a
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sbin_PROGRAMS += init
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@ -17,11 +17,12 @@
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#include <linux/reboot.h>
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#include <sys/signalfd.h>
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#include <sys/reboot.h>
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#include <stdbool.h>
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#include <signal.h>
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#include "initsock.h"
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#include "service.h"
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#include "util.h"
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#include "config.h"
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#define RUNSVCBIN SCRIPTDIR "/runsvc"
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@ -7,13 +7,9 @@ libinit_a_SOURCES += lib/init/init_socket_recv_status.c
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libinit_a_CPPFLAGS = $(AM_CPPFLAGS)
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libinit_a_CFLAGS = $(AM_CFLAGS)
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libutil_a_SOURCES = lib/util/argv_exec.c lib/include/util.h
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libutil_a_CPPFLAGS = $(AM_CPPFLAGS)
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libutil_a_CFLAGS = $(AM_CFLAGS)
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libcfg_a_SOURCES = lib/libcfg/rdline.c lib/libcfg/unescape.c lib/libcfg/rdcfg.c
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libcfg_a_SOURCES += lib/libcfg/pack_argv.c lib/include/libcfg.h
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libcfg_a_CPPFLAGS = $(AM_CPPFLAGS)
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libcfg_a_CFLAGS = $(AM_CFLAGS)
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noinst_LIBRARIES += libinit.a libcfg.a libutil.a
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noinst_LIBRARIES += libinit.a libcfg.a
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@ -4,7 +4,11 @@
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#include <sys/types.h>
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#include "util.h"
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typedef struct exec_t {
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struct exec_t *next;
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int argc; /* number of elements in argument vector */
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char args[]; /* argument vectot string blob */
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} exec_t;
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enum {
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/*
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@ -1,28 +0,0 @@
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/* SPDX-License-Identifier: ISC */
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#ifndef UTIL_H
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#define UTIL_H
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#include <sys/types.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include "config.h"
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#ifdef __GNUC__
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#define NORETURN __attribute__((noreturn))
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#endif
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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typedef struct exec_t {
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struct exec_t *next;
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int argc; /* number of elements in argument vector */
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char args[]; /* argument vectot string blob */
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} exec_t;
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int setup_tty(const char *tty, bool truncate);
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NORETURN void argv_exec(exec_t *e);
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#endif /* UTIL_H */
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@ -11,7 +11,6 @@
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#include "service.h"
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#include "libcfg.h"
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#include "util.h"
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static int try_unescape(char *arg, rdline_t *rd)
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{
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memcpy(svc->name, filename, nlen);
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svc->id = -1;
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if (rdcfg(svc, &rd, svc_params, ARRAY_SIZE(svc_params), flags))
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if (rdcfg(svc, &rd, svc_params,
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sizeof(svc_params) / sizeof(svc_params[0]), flags)) {
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goto fail;
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}
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out:
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rdline_cleanup(&rd);
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@ -23,7 +23,7 @@ int svc_type_from_string(const char *type)
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{
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size_t i;
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for (i = 0; i < ARRAY_SIZE(type_map); ++i) {
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for (i = 0; i < sizeof(type_map) / sizeof(type_map[0]); ++i) {
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if (strcmp(type_map[i], type) == 0)
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return i;
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}
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{
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size_t i;
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for (i = 0; i < ARRAY_SIZE(target_map); ++i) {
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for (i = 0; i < sizeof(target_map) / sizeof(target_map[0]); ++i) {
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if (strcmp(target_map[i], target) == 0)
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return i;
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}
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@ -8,7 +8,6 @@
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#include <fcntl.h>
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#include "libcfg.h"
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#include "util.h"
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int rdline_init(rdline_t *t, int dirfd, const char *filename,
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int argc, const char *const *argv)
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@ -1,51 +0,0 @@
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/* SPDX-License-Identifier: ISC */
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#include "service.h"
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <stdio.h>
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int setup_tty(const char *tty, bool truncate)
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{
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int fd;
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if (tty == NULL)
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return 0;
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fd = open(tty, O_RDWR);
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if (fd < 0) {
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perror(tty);
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return -1;
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}
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if (truncate)
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ftruncate(fd, 0);
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close(STDIN_FILENO);
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close(STDOUT_FILENO);
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close(STDERR_FILENO);
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setsid();
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dup2(fd, STDIN_FILENO);
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dup2(fd, STDOUT_FILENO);
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dup2(fd, STDERR_FILENO);
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close(fd);
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return 0;
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}
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void argv_exec(exec_t *e)
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{
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char **argv = alloca(sizeof(char *) * (e->argc + 1)), *ptr;
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int i;
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for (ptr = e->args, i = 0; i < e->argc; ++i, ptr += strlen(ptr) + 1)
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argv[i] = ptr;
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argv[i] = NULL;
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execvp(argv[0], argv);
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perror(argv[0]);
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exit(EXIT_FAILURE);
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}
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