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mtnd.c
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mtnd.c
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//
// mtnd.c
// Copyright (C) 2011 KLab Inc.
//
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define _GNU_SOURCE
#define _FILE_OFFSET_BITS 64
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <utime.h>
#include <fcntl.h>
#include <getopt.h>
#include <grp.h>
#include <sys/statvfs.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/epoll.h>
#include <sys/time.h>
#include <sys/wait.h>
#include "mtnd.h"
MTN *mtn = NULL;
MTND *ctx = NULL;
MTNTASK *tasklist = NULL;
MTNSAVETASK *tasksave = NULL;
static MTNFSTASKFUNC taskfunc[MTNCMD_MAX];
volatile sig_atomic_t is_loop = 1;
void version()
{
printf("%s version %s\n", MODULE_NAME, PACKAGE_VERSION);
}
void usage()
{
printf("%s version %s\n", MODULE_NAME, PACKAGE_VERSION);
printf("usage: %s [OPTION]\n", MODULE_NAME);
printf("\n");
printf(" OPTION\n");
printf(" -h # help\n");
printf(" -v # version\n");
printf(" -n # no daemon\n");
printf(" -e dir # export dir\n");
printf(" -E dir # execute dir\n");
printf(" -g name,name,... # group list(MAX 64Bytes)\n");
printf(" -m addr # mcast addr\n");
printf(" -p port # TCP/UDP port(default: 6000)\n");
printf(" -D num # debug level\n");
printf(" -l size # limit size (MB)\n");
printf(" --pid=path # pid file(ex: /var/run/mtnfs.pid)\n");
printf(" --rdonly # read only\n");
printf(" --low-priority # low IO priority\n");
printf("\n");
}
int mtnd_fix_path(char *path, char *real)
{
ARG a = NULL;
STR s = NULL;
char *p = NULL;
char *r = NULL;
char buff[PATH_MAX];
strcpy(buff, path);
p = strtok_r(buff, "/", &r);
while(p){
if(!strcmp("..", p)){
s = poparg(a);
s = clrstr(s);
}else if(strcmp(".", p)){
a = addarg(a, p);
}
p = strtok_r(NULL, "/", &r);
}
if(!real){
real = path;
}
strcpy(real, "./");
if((s = joinarg(a, "/"))){
strcat(real, s);
}
clrarg(a);
clrstr(s);
return(0);
}
int getstatd(uint64_t *dfree, uint64_t *dsize)
{
uint64_t size;
struct statvfs vf;
if(statvfs(".", &vf) == -1){
mtnlogger(mtn, 0, "[error] %s: %s\n", __func__, strerror(errno));
return(-1);
}
if(dfree){
size = vf.f_bfree;
size *= vf.f_bsize;
*dfree = (size > ctx->free_limit) ? size - ctx->free_limit : 0;
}
if(dsize){
size = vf.f_blocks;
size *= vf.f_frsize;
*dsize = (size > ctx->free_limit) ? size - ctx->free_limit : 0;
}
return(0);
}
int is_freelimit()
{
uint64_t dfree;
if(getstatd(&dfree, NULL) == -1){
return(-1);
}
return(dfree == 0);
}
int is_savetask(MTNTASK *mt)
{
MTNSAVETASK *t;
for(t=tasksave;t;t=t->next){
if(!cmpaddr(&(mt->addr), &(t->addr))){
if(mt->recv.head.sqno == t->sqno){
return(1);
}
}
}
return(0);
}
uint64_t get_datasize(char *path)
{
char full[PATH_MAX];
off_t size = 0;
DIR *d = opendir(path);
struct dirent *ent;
struct stat st;
while((ent = readdir(d))){
if(strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0){
continue;
}
sprintf(full, "%s/%s", path, ent->d_name);
if(lstat(full, &st) == -1){
continue;
}
if(S_ISDIR(st.st_mode)){
size += get_datasize(full);
continue;
}
if(S_ISREG(st.st_mode)){
size += st.st_size;
}
}
closedir(d);
return(size);
}
MTNTASK *mtnd_task_create(MTNDATA *data, MTNADDR *addr)
{
MTNTASK *kt;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
for(kt=tasklist;kt;kt=kt->next){
if(cmpaddr(&(kt->addr), addr) != 0){
continue;
}
if(kt->recv.head.sqno != data->head.sqno){
continue;
}
return(NULL);
}
kt = newtask();
gettimeofday(&(kt->tv),NULL);
memcpy(&(kt->addr), addr, sizeof(MTNADDR));
memcpy(&(kt->recv), data, sizeof(MTNDATA));
kt->type = data->head.type;
kt->send.head.sqno = data->head.sqno;
mtnlogger(mtn,8, "[debug] %s: CMD=%s SEQ=%d\n", __func__, mtncmdstr[kt->type], data->head.sqno);
if(tasklist){
tasklist->prev = kt;
}
kt->next = tasklist;
tasklist = kt;
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
return(kt);
}
MTNTASK *mtnd_task_save(MTNTASK *t)
{
MTNTASK *n;
MTNSAVETASK *s;
if(!t){
return(NULL);
}
n = cuttask(t);
if(t == tasklist){
tasklist = n;
}
if(!(s = newsavetask(t))){
mtnlogger(mtn, 0, "[error] %s: %s\n", __func__, strerror(errno));
}else{
if((s->next = tasksave)){
s->next->prev = s;
}
tasksave = s;
}
deltask(t);
return(n);
}
static int mtnd_guid_set(uid_t uid, gid_t gid)
{
seteuid(uid);
setegid(gid);
return(0);
}
static int mtnd_guid_restore()
{
uid_t uid = getuid();
gid_t gid = getgid();
if(uid != geteuid()){
seteuid(uid);
}
if(gid != getegid()){
setegid(gid);
}
return(0);
}
//-------------------------------------------------------------------
// UDP PROSESS
//-------------------------------------------------------------------
static void mtnd_startup_process(MTNTASK *kt)
{
MTNSVR *mb;
kt->addr.addr.in.sin_port = htons(mtn->mcast_port);
ctx->members = addsvr(ctx->members, &(kt->addr), NULL);
mb = getsvr(ctx->members, &(kt->addr));
mtndata_get_svrhost(mb, &(kt->recv));
gettimeofday(&(mb->tv),NULL);
kt->fin = 1;
kt->send.head.type = MTNCMD_STARTUP;
kt->send.head.size = 0;
kt->send.head.flag = 1;
mtndata_set_string(ctx->host, &(kt->send));
}
static void mtnd_shutdown_process(MTNTASK *kt)
{
MTNSVR *mb;
kt->addr.addr.in.sin_port = htons(mtn->mcast_port);
if((mb = getsvr(ctx->members, &(kt->addr)))){
if(mb == ctx->members){
mb = (ctx->members = delsvr(ctx->members));
}else{
mb = delsvr(mb);
}
}
kt->fin = 1;
}
static void mtnd_hello_process(MTNTASK *kt)
{
uint32_t mcount;
kt->fin = 1;
if(is_savetask(kt)){
kt->recv.head.flag = 1;
return;
}
if(kt->recv.head.flag == 1){
kt->fin = 2;
}else{
mcount = get_members_count(ctx->members);
mtndata_set_string(ctx->host, &(kt->send));
mtndata_set_int(&mcount, &(kt->send), sizeof(mcount));
}
}
static void mtnd_info_process(MTNTASK *kt)
{
statm sm;
MTNSVR mb;
MTNTASK *t;
double loadavg;
struct stat st;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
memset(&mb, 0, sizeof(mb));
getstatm(&sm);
getstatd(&(mb.dfree), &(mb.dsize));
getmeminfo(&(mb.memsize), &(mb.memfree));
for(t=ctx->cldtask;t;t=t->next){
if(t->init.use){
if(stat(t->path, &st) == -1){
mb.dfree -= t->init.use;
}else{
if(t->init.use > st.st_size){
mb.dfree -= (t->init.use - st.st_size);
}
}
}
}
if(ctx->rdonly){
mb.dfree = 0;
}
mb.cnt.prc = getpscount();
mb.cnt.cld = get_task_count(ctx->cldtask);
mb.cnt.mbr = get_members_count(ctx->members);
mb.cnt.mem = getcount(MTNCOUNT_MALLOC);
mb.cnt.tsk = getcount(MTNCOUNT_TASK);
mb.cnt.tsv = getcount(MTNCOUNT_SAVE);
mb.cnt.svr = getcount(MTNCOUNT_SVR);
mb.cnt.dir = getcount(MTNCOUNT_DIR);
mb.cnt.sta = getcount(MTNCOUNT_STAT);
mb.cnt.str = getcount(MTNCOUNT_STR);
mb.cnt.arg = getcount(MTNCOUNT_ARG);
mb.cnt.cpu = sysconf(_SC_NPROCESSORS_ONLN);
getloadavg(&loadavg, 1);
mb.loadavg = (uint32_t)(loadavg * 100);
mb.flags |= ctx->export ? MTNMODE_EXPORT : 0;
mb.flags |= ctx->execute ? MTNMODE_EXECUTE : 0;
mb.flags |= ctx->rdonly ? MTNMODE_RDONLY : 0;
mtndata_set_int(&(mb.dsize), &(kt->send), sizeof(mb.dsize));
mtndata_set_int(&(mb.dfree), &(kt->send), sizeof(mb.dfree));
mtndata_set_int(&(sm.vsz), &(kt->send), sizeof(sm.vsz));
mtndata_set_int(&(sm.res), &(kt->send), sizeof(sm.res));
mtndata_set_int(&(mb.cnt.cpu), &(kt->send), sizeof(mb.cnt.cpu));
mtndata_set_int(&(mb.loadavg), &(kt->send), sizeof(mb.loadavg));
mtndata_set_int(&(mb.memsize), &(kt->send), sizeof(mb.memsize));
mtndata_set_int(&(mb.memfree), &(kt->send), sizeof(mb.memfree));
mtndata_set_int(&(mb.flags), &(kt->send), sizeof(mb.flags));
mtndata_set_data(&(mb.cnt), &(kt->send), sizeof(mb.cnt));
mtndata_set_string(mtn->groupstr, &(kt->send));
kt->send.head.fin = 1;
kt->fin = 1;
mtnlogger(mtn, 8, "[debug] %s: SIZE=%d\n", __func__, kt->send.head.size);
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
int mtnd_list_dir(MTNTASK *kt)
{
uint16_t len;
struct dirent *ent;
char full[PATH_MAX];
while((ent = readdir(kt->dir))){
if(strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0){
continue;
}
sprintf(full, "%s/%s", kt->path, ent->d_name);
if(!lstat(full, &(kt->stat))){
len = mtndata_set_string(ent->d_name, NULL);
len += mtndata_set_stat(&(kt->stat), NULL);
if(kt->send.head.size + len <= mtn->max_packet_size){
mtndata_set_string(ent->d_name, &(kt->send));
mtndata_set_stat(&(kt->stat), &(kt->send));
}else{
send_dgram(mtn, kt->con, &(kt->send), &(kt->addr));
memset(&(kt->send), 0, sizeof(kt->send));
mtndata_set_string(ent->d_name, &(kt->send));
mtndata_set_stat(&(kt->stat), &(kt->send));
return(0);
}
}
}
closedir(kt->dir);
kt->dir = NULL;
kt->fin = 1;
kt->send.head.fin = 1;
return(0);
}
//-------------------------------------------------------------------
// UDP EXPORT PROSESS
//-------------------------------------------------------------------
static void mtnd_list_process(MTNTASK *kt)
{
char buff[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
if(kt->dir){
mtnd_list_dir(kt);
}else{
kt->fin = 1;
kt->send.head.size = 0;
mtndata_get_string(buff, &(kt->recv));
mtnd_fix_path(buff, kt->path);
if(lstat(kt->path, &(kt->stat)) == -1){
if(errno != ENOENT){
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), kt->path);
}
kt->send.head.fin = 1;
}
if(S_ISREG(kt->stat.st_mode)){
mtndata_set_string(basename(kt->path), &(kt->send));
mtndata_set_stat(&(kt->stat), &(kt->send));
kt->send.head.fin = 1;
}
if(S_ISDIR(kt->stat.st_mode)){
if((kt->dir = opendir(kt->path))){
kt->fin = 0;
}else{
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), kt->path);
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
}
}
}
mtnlogger(mtn, 9, "[debug] %s: OUI\n", __func__);
}
static void mtnd_stat_process(MTNTASK *kt)
{
char buff[PATH_MAX];
char file[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(buff, &(kt->recv));
mtnd_fix_path(buff, kt->path);
if(lstat(kt->path, &(kt->stat)) == -1){
if(errno != ENOENT){
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), kt->path);
kt->send.head.type = MTNCMD_ERROR;
}
}else{
kt->send.head.type = MTNCMD_SUCCESS;
dirbase(kt->path, NULL, file);
mtndata_set_string(file, &(kt->send));
mtndata_set_stat(&(kt->stat), &(kt->send));
}
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
static void mtnd_truncate_process(MTNTASK *kt)
{
off_t offset;
char path[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.type = MTNCMD_SUCCESS;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(path, &(kt->recv));
mtndata_get_int(&offset, &(kt->recv), sizeof(offset));
mtnd_fix_path(path, kt->path);
if(ctx->rdonly){
if(lstat(kt->path, &(kt->stat)) != -1){
errno = EROFS;
}
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s path=%s offset=%llu\n", __func__, strerror(errno), kt->path, offset);
}
}else{
if(truncate(kt->path, offset) != -1){
mtnlogger(mtn, 2, "[winfo] %s: cmd=%s path=%s offset=%llu\n", __func__, "truncate", kt->path, offset);
}else{
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s path=%s offset=%llu\n", __func__, strerror(errno), kt->path, offset);
}
}
}
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
static void mtnd_mkdir_process(MTNTASK *kt)
{
uid_t uid;
gid_t gid;
char buff[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(buff, &(kt->recv));
mtndata_get_int(&uid, &(kt->recv), sizeof(uid));
mtndata_get_int(&gid, &(kt->recv), sizeof(gid));
mtnd_fix_path(buff, kt->path);
kt->send.head.type = MTNCMD_SUCCESS;
if(ctx->rdonly){
errno = EROFS;
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), kt->path);
}else{
if(mkdir_ex(kt->path) != -1){
mtnlogger(mtn, 2, "[winfo] %s: cmd=%s path=%s uid=%d gid=%d\n", __func__, "mkdir", kt->path, (int)uid, (int)gid);
}else{
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), kt->path);
}
if(chown(kt->path, uid, gid) != -1){
mtnlogger(mtn, 2, "[winfo] %s: cmd=%s path=%s uid=%d gid=%d\n", __func__, "chown", kt->path, (int)uid, (int)gid);
}else{
mtnlogger(mtn, 0, "[error] %s: chown %s %s\n", __func__, strerror(errno), kt->path);
}
}
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
static void mtnd_rm_process(MTNTASK *kt)
{
char buff[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(buff, &(kt->recv));
mtnd_fix_path(buff, kt->path);
kt->send.head.type = MTNCMD_SUCCESS;
if(ctx->rdonly){
if(lstat(kt->path, &(kt->stat)) != -1){
errno = EROFS;
}
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), kt->path);
}
}else{
if(lstat(kt->path, &(kt->stat)) == -1){
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), kt->path);
}
}else{
if(S_ISDIR(kt->stat.st_mode)){
if(rmdir(kt->path) != -1){
mtnlogger(mtn, 2, "[winfo] %s: cmd=%s path=%s\n", __func__, "rmdir", kt->path);
}else{
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), kt->path);
}
}else{
if(unlink(kt->path) != -1){
mtnlogger(mtn, 2, "[winfo] %s: cmd=%s path=%s\n", __func__, "unlink", kt->path);
}else{
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), kt->path);
}
}
}
}
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
static void mtnd_rename_process(MTNTASK *kt)
{
char obuff[PATH_MAX];
char nbuff[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(obuff, &(kt->recv));
mtndata_get_string(nbuff, &(kt->recv));
mtnd_fix_path(obuff, kt->path);
mtnd_fix_path(nbuff, NULL);
kt->send.head.type = MTNCMD_SUCCESS;
if(ctx->rdonly){
if(lstat(kt->path, &(kt->stat)) != -1){
errno = EROFS;
}
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s -> %s\n", __func__, strerror(errno), obuff, nbuff);
}
}else{
if(rename(kt->path, nbuff) != -1){
mtnlogger(mtn, 2, "[winfo] %s: cmd=%s old=%s new=%s\n", __func__, "rename", obuff, nbuff);
}else{
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s -> %s\n", __func__, strerror(errno), obuff, nbuff);
}
}
}
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
static void mtnd_symlink_process(MTNTASK *kt)
{
char oldpath[PATH_MAX];
char newpath[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(oldpath, &(kt->recv));
mtndata_get_string(newpath, &(kt->recv));
mtnd_fix_path(newpath, NULL);
kt->send.head.type = MTNCMD_SUCCESS;
if(ctx->rdonly){
errno = EROFS;
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s -> %s\n", __func__, strerror(errno), oldpath, newpath);
}else{
if(symlink(oldpath, newpath) != -1){
mtnlogger(mtn, 2, "[winfo] %s: cmd=%s path1=%s path2=%s\n", __func__, "symlink", oldpath, newpath);
}else{
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s -> %s\n", __func__, strerror(errno), oldpath, newpath);
}
}
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
static void mtnd_readlink_process(MTNTASK *kt)
{
ssize_t size;
char newpath[PATH_MAX];
char oldpath[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(newpath, &(kt->recv));
mtnd_fix_path(newpath, NULL);
kt->send.head.type = MTNCMD_SUCCESS;
size = readlink(newpath, oldpath, PATH_MAX);
if(size == -1){
mtnlogger(mtn, 0, "[error] %s: %s %s -> %s\n", __func__, strerror(errno), oldpath, newpath);
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
}else{
oldpath[size] = 0;
mtndata_set_string(oldpath, &(kt->send));
}
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
static void mtnd_chmod_process(MTNTASK *kt)
{
mode_t mode;
char path[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 7, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(path, &(kt->recv));
mtndata_get_int(&mode, &(kt->recv), sizeof(mode));
mtnd_fix_path(path, NULL);
kt->send.head.type = MTNCMD_SUCCESS;
if(ctx->rdonly){
if(lstat(kt->path, &(kt->stat)) != -1){
errno = EROFS;
}
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s path=%s\n", __func__, strerror(errno), path);
}
}else{
if(chmod(path, mode) != -1){
mtnlogger(mtn, 2, "[winfo] %s: cmd=%s path=%s\n", __func__, "chmod", path);
}else{
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s path=%s\n", __func__, strerror(errno), path);
}
}
}
mtnlogger(mtn, 7, "[debug] %s: OUT\n", __func__);
}
static void mtnd_chown_process(MTNTASK *kt)
{
uid_t uid;
gid_t gid;
char path[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 7, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(path, &(kt->recv));
mtndata_get_int(&uid, &(kt->recv), sizeof(uid));
mtndata_get_int(&gid, &(kt->recv), sizeof(gid));
mtnd_fix_path(path, NULL);
kt->send.head.type = MTNCMD_SUCCESS;
if(ctx->rdonly){
if(lstat(kt->path, &(kt->stat)) != -1){
errno = EROFS;
}
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s path=%s\n", __func__, strerror(errno), path);
}
}else{
if(chown(path, uid, gid) != -1){
mtnlogger(mtn, 2, "[winfo] %s: cmd=%s path=%s uid=%d gid=%d\n", __func__, "chown", path, (int)uid, (int)gid);
}else{
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s path=%s uid=%d gid=%d\n", __func__, strerror(errno), path, (int)uid, (int)gid);
}
}
}
mtnlogger(mtn, 7, "[debug] %s: OUT\n", __func__);
}
static void mtnd_utime_process(MTNTASK *kt)
{
struct utimbuf ut;
char path[PATH_MAX];
MTND_EXPORT_RETURN;
mtnlogger(mtn, 7, "[debug] %s: IN\n", __func__);
kt->fin = 1;
kt->send.head.fin = 1;
kt->send.head.size = 0;
mtndata_get_string(path, &(kt->recv));
mtndata_get_int(&(ut.actime), &(kt->recv), sizeof(ut.actime));
mtndata_get_int(&(ut.modtime), &(kt->recv), sizeof(ut.modtime));
mtnd_fix_path(path, NULL);
kt->send.head.type = MTNCMD_SUCCESS;
if(ctx->rdonly){
if(lstat(kt->path, &(kt->stat)) != -1){
errno = EROFS;
}
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), path);
}
}else{
if(utime(path, &ut) == -1){
if(errno != ENOENT){
kt->send.head.type = MTNCMD_ERROR;
mtndata_set_int(&errno, &(kt->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: %s %s\n", __func__, strerror(errno), path);
}
}
}
mtnlogger(mtn, 7, "[debug] %s: OUT\n", __func__);
}
static ssize_t recv_stream_nb(MTN *mtn, int s, void *buff, size_t size)
{
ssize_t r;
size_t done = 0;
while(done < size){
if(!is_loop){
return(-1);
}
r = read(s, buff, size);
if(r == -1){
if(errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR){
break;
}
mtnlogger(mtn, 0, "[error] %s: %s\n", __func__, strerror(errno));
return(-1);
}
if(r == 0){
break;
}
buff += r;
done += r;
}
return(ssize_t)done;
}
static ssize_t recv_data_stream_nb(MTN *mtn, int s, MTNDATA *kd, size_t nrecv)
{
ssize_t r;
if(nrecv < sizeof(kd->head)){
r = recv_stream_nb(mtn, s, ((char *)&kd->head) + nrecv, sizeof(kd->head) - nrecv);
if(r > 0 && nrecv + r >= sizeof(kd->head)){
if(kd->head.size > MTN_MAX_DATASIZE){
mtnlogger(mtn, 0, "[error] %s: data length too long size=%d\n", __func__, kd->head.size);
return(-1);
}
}
return(r);
}
nrecv -= sizeof(kd->head);
return(recv_stream_nb(mtn, s, ((char *)&kd->data) + nrecv, kd->head.size - nrecv));
}
int mtnd_cld_process(int s)
{
ssize_t r;
MTNTASK *n;
MTNDATA *data;
for(n=ctx->cldtask;n;n=n->next){
if(s == n->rpp){
data = &(n->recv);
r = recv_data_stream_nb(mtn, s, data, n->nrecv);
if(r == -1){
mtnlogger(mtn, 0, "[error] %s: %s\n", __func__, strerror(errno));
return(-1);
}
n->nrecv += r;
if(n->nrecv >= sizeof(data->head) && n->nrecv == data->head.size + sizeof(data->head)){
switch(data->head.type){
case MTNCMD_OPEN:
mtndata_get_int(&(n->init.use), data, sizeof(n->init.use));
mtndata_get_string(n->path, data);
break;
case MTNCMD_RDONLY:
mtndata_get_int(&(ctx->rdonly), data, sizeof(ctx->rdonly));
break;
}
memset(data, 0, sizeof(MTNDATA));
n->nrecv = 0;
}
return(1);
}
}
return(0);
}
void mtnd_udp_process(int s)
{
MTNADDR addr;
MTNDATA data;
char buf[INET_ADDRSTRLEN];
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
addr.len = sizeof(addr.addr);
if(recv_dgram(mtn, s, &data, &(addr.addr.addr), &(addr.len)) != -1){
mtnlogger(mtn, 8, "[debug] %s: from %s\n", __func__, v4addr(&addr, buf));
mtnd_task_create(&data, &addr);
}
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
void mtnd_task_process(int s)
{
mtnlogger(mtn, 9, "[debug] %s: IN\n", __func__);
MTNTASK *t = tasklist;
MTNFSTASKFUNC task;
while(t){
t->con = s;
task = taskfunc[t->type];
if(task){
task(t);
}else{
t->fin = 1;
t->send.head.fin = 1;
t->send.head.size = 0;
t->send.head.type = MTNCMD_ERROR;
errno = EPERM;
mtndata_set_int(&errno, &(t->send), sizeof(errno));
mtnlogger(mtn, 0, "[error] %s: Function Not Found type=%d\n", __func__, t->type);
}
if(t->fin){
if(t->recv.head.flag == 0){
send_dgram(mtn, s, &(t->send), &(t->addr));
}
switch(t->fin){
case 1:
if(t == tasklist){
t = tasklist = deltask(t);
}else{
t = deltask(t);
}
break;
case 2:
t = mtnd_task_save(t);
break;
}
}else{
t = t->next;
}
}
mtnlogger(mtn, 9, "[debug] %s: OUT\n", __func__);
}
MTNTASK *mtnd_accept_process(int l)
{
int pp[2][2];
MTNTASK *kt = newtask();
kt->addr.len = sizeof(kt->addr.addr);
kt->con = accept(l, &(kt->addr.addr.addr), &(kt->addr.len));
if(kt->con == -1){
mtnlogger(mtn, 0, "[error] %s: %s\n", __func__, strerror(errno));
deltask(kt);
return(NULL);
}
if(pipe(pp[0]) == -1){
mtnlogger(mtn, 0, "[error] %s: %s\n", __func__, strerror(errno));
close(kt->con);
deltask(kt);
return(NULL);
}
if(pipe(pp[1]) == -1){
mtnlogger(mtn, 0, "[error] %s: %s\n", __func__, strerror(errno));
close(kt->con);
close(pp[0][0]);
close(pp[0][1]);
deltask(kt);
return(NULL);
}
kt->pid = fork();
if(kt->pid == -1){
mtnlogger(mtn, 0, "[error] %s: fork error %s\n", __func__, strerror(errno));
close(kt->con);
close(pp[0][0]);
close(pp[0][1]);
close(pp[1][0]);
close(pp[1][1]);
deltask(kt);
return(NULL);
}
if(kt->pid){
kt->rpp = pp[0][0];
kt->wpp = pp[1][1];
close(pp[0][1]);
close(pp[1][0]);
close(kt->con);
return(kt);
}
//----- child process -----
kt->rpp = pp[1][0];
kt->wpp = pp[0][1];
close(pp[0][0]);
close(pp[1][1]);
while(ctx->cldtask){
ctx->cldtask = deltask(ctx->cldtask);
}
fcntl(kt->con, F_SETFD, FD_CLOEXEC);
fcntl(kt->rpp, F_SETFD, FD_CLOEXEC);
fcntl(kt->wpp, F_SETFD, FD_CLOEXEC);
if(ctx->ioprio){
if(ioprio_set(IOPRIO_WHO_PROCESS, getpid(), ctx->ioprio) == -1){
mtnlogger(mtn, 0, "[error] %s: ioprio_set: %s\n", __func__, strerror(errno));
}
}
mtnd_child(kt);
close(kt->con);
close(kt->rpp);
close(kt->wpp);
_exit(0);
}
/*
* mode
* 0: チェックしてすぐ抜ける
* 1: 全プロセスが終了するまで待つ
*/
void mtnd_waitpid(int e, int mode)
{
int opt;
pid_t pid;
MTNTASK *t;
struct epoll_event ev;
opt = mode ? 0 : WNOHANG;
if(mode && ctx->signal){
for(t=ctx->cldtask;t;t=t->next){
mtnlogger(mtn, 0, "[info] %s: send signal pid=%d sig=%d\n", __func__, t->pid, ctx->signal);
kill(t->pid, ctx->signal);
}
}
while(ctx->cldtask){
pid = waitpid(-1, NULL, opt);
if(pid <= 0){
if(mode){
continue;
}else{
break;
}
}
for(t=ctx->cldtask;t;t=t->next){