int main(int argc,char *argv[])
{
struct jobcmd deqcmd;
int fd;
if(argc!=2)
{
usage();
return 1;
}
deqcmd.type=DEQ;
deqcmd.defpri=0;
deqcmd.owner=getuid();
deqcmd.argnum=1;
strcpy(deqcmd.data,*++argv);
printf("jid %s\n",deqcmd.data);
#ifdef DEBUG
printf("deqcmd cmdtype\t%d (-1 means ENQ, -2 means DEQ, -3 means STAT\n"
"deqcmd owner\t%d\n",
deqcmd.type,deqcmd.owner);
#endif
if((fd=open("/tmp/server",O_WRONLY))<0)
error_sys("deq open fifo failed");
if(write(fd,&deqcmd,DATALEN)<0)
error_sys("deq write failed");
close(fd);
return 0;
}
int main(int argc, char **argv)
{
struct sockaddr_in serv_addr;
int cfd; int n;
char buf[BUFSIZ];
cfd = socket(AF_INET, SOCK_STREAM, 0);
if (cfd == -1)
error_sys("socket");
memset(&serv_addr, 0, sizeof(serv_addr)); //用sizeof可使更通用
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(SERV_PORT);
inet_pton(AF_INET, SERV_ADDR, &serv_addr.sin_addr.s_addr);
n = connect(cfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr));
if (n == -1)
error_sys("connect");
while (1) {
n = read(STDIN_FILENO, buf, BUFSIZ);
if (n == 0) //手动产生文件结束符 ctrl + d
break;
n = write(cfd, buf, n);//将数据放到发送缓冲区中，此时write立即返回，不管是否已经发出去了，若对方已关闭链接，则无法发送，并将置RST标志位，表示对方已经关闭链接，当下一次调用write时，write启动另一个内核函数去检查到此标志位，然后向此客户端程序发送SIGPIPE信号，默认是终止进程，若是服务器，需将此信号的处理方式改为捕捉，不致服务器出现崩溃
n = read(cfd, buf, BUFSIZ);
n = write(STDOUT_FILENO, buf, n);
}
close(cfd);
return 0;
}
int main(void){
char buffer[LINE];
pid_t process_id; //parent process upon which the child process is called
int status;
printf("%% ");//prompt
while(fgets(buffer , LINE , stdin) != NULL){
if(buffer[strlen(buffer) -1] == '\n'){
buffer[strlen(buffer) -1] == '\0';
}
printf("cmd: %s \n" , buffer);
if(strncmp(buffer,"quit",4) == 0)
break;
//fork a new process check for errors
if((process_id = fork()) < 0){
error_sys("Cant fork a new process");
}else if(process_id == 0){
int wth = execv("/usr/ls/" , buffer); // executes a command
printf("The process id for this is %ld %d \n" ,(long)getpid() , wth);
error_sys("Couldn't execute");
exit(127);
}
/* parent process */
if((process_id = waitpid(process_id , &status , 0)) < 0);
printf("Status :%d\n" , status);
error_sys("Waitpid error");
printf("%% ");
printf("The process id for this is %ld \n" ,(long)getpid());
}
exit(0);
}
int
main(void)
{
int fd;
int fw;
if ((fd = creat("file.hole", FILE_MODE)) < 0)
printf("file.hole is not create");
else
printf("%d\n", fd);
error_sys("creat error");
printf("--------\n");
if (fw = write(fd, buf1, 10) != 10)
error_sys("buf1 write error");
else
printf("fw is %d\n", fw);
/* offset now = 10 */
if (lseek(fd, 16384, SEEK_SET) == -1)
error_sys("lseek error");
/* offset now = 16384 */
if (write(fd, buf2, 10) != 10)
error_sys("buf2 write error");
/* offset now = 16394 */
exit(0);
}
int gpudata_transfer(gpudata *dst, size_t dstoff, gpudata *src, size_t srcoff,
size_t sz) {
gpucontext *src_ctx;
gpucontext *dst_ctx;
void *tmp;
int res;
src_ctx = ((partial_gpudata *)src)->ctx;
dst_ctx = ((partial_gpudata *)dst)->ctx;
if (src_ctx == dst_ctx)
return src_ctx->ops->buffer_move(dst, dstoff, src, srcoff, sz);
if (src_ctx->ops == dst_ctx->ops) {
res = src_ctx->ops->buffer_transfer(dst, dstoff, src, srcoff, sz);
if (res == GA_NO_ERROR)
return res;
}
/* Fallback to host copy */
tmp = malloc(sz);
if (tmp == NULL) {
error_sys(src_ctx->err, "malloc");
return error_sys(dst_ctx->err, "malloc");
}
res = src_ctx->ops->buffer_read(tmp, src, srcoff, sz);
if (res != GA_NO_ERROR) {
free(tmp);
return res;
}
res = dst_ctx->ops->buffer_write(dst, dstoff, tmp, sz);
free(tmp);
return res;
}
int main(int argc,char *argv[])
{
struct jobcmd statcmd;
int fd;
if(argc!=1)
{
usage();
return 1;
}
statcmd.type=STAT;
statcmd.defpri=0;
statcmd.owner=getuid();
statcmd.argnum=0;
if((fd=open("/tmp/server",O_WRONLY))<0)
error_sys("stat open fifo failed");
if(write(fd,&statcmd,DATALEN)<0)
error_sys("stat write failed");
close(fd);
return 0;
}
int main(int argc, char **argv)
{
struct sockaddr_in serv_addr, cliaddr;
int sfd, cfd;
int n, cli_len, i;
char buf[BUFSIZ];
char cli_str[IPSIZE];
sfd = socket(AF_INET, SOCK_STREAM, 0);
if (sfd == -1)
error_sys("socket");
memset(&serv_addr, 0, sizeof(serv_addr)); //用sizeof可使更通用
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(SERV_PORT);
inet_pton(AF_INET, SERV_ADDR, (void *)&serv_addr.sin_addr.s_addr);
n = bind(sfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr));
if (n == -1)
error_sys("bind");
n = listen(sfd, 20);
if (n == -1)
error_sys("listen");
while (1) {
cli_len = sizeof(cliaddr);
cfd = accept(sfd, (struct sockaddr *)&cliaddr, (socklen_t *)&cli_len);
if (cfd == -1) {
if ((errno == ECONNABORTED) || (errno == EINTR))
continue;
error_sys("accept");
}
printf("received from %s at port :%d\n", inet_ntop(AF_INET, &cliaddr.sin_addr.s_addr, cli_str, IPSIZE), ntohs(cliaddr.sin_port));
while (1) {
n = read(cfd, buf, BUFSIZ);//只有当数据结束时才跳出，去关闭链接cfd
//close(cfd);
// shutdown(cfd, SHUT_WR);
printf("i can still received: %s\n", buf);
if (n == 0) {
write(STDOUT_FILENO, "connect close...\n", 17);
break;
}
for (i = 0; i < n; i++)
buf[i] = toupper(buf[i]);
printf("here\n");
n = write(cfd, buf, n);
printf("write number: %d\n", n);
}
close(cfd);
}
close(sfd);
return 0;
}
int main(int argc,char *argv[])
{
struct jobcmd statcmd;
int fd;
char string[10000]="\0";
int length;
int out;
int fd1;
if(argc!=1)
{
usage();
return 1;
}
statcmd.type=STAT;
statcmd.defpri=0;
statcmd.owner=getuid();
statcmd.argnum=0;
#ifdef DEBUG
printf("statcmd cmdtype\t%d (-1 means ENQ, -2 means DEQ, -3 means STAT)\n"
"statcmd owner\t%d\n"
"statcmd defpri\t%d\n"
"statcmd argnum\t%d\n",
statcmd.type,statcmd.owner,statcmd.defpri,statcmd.argnum);
#endif
if((fd=open("/tmp/server",O_WRONLY))<0)
error_sys("stat open fifo failed");
if(write(fd,&statcmd,DATALEN)<0)
error_sys("stat write failed");
if((fd1=open("/tmp/stat",O_RDONLY|O_NONBLOCK))<0){
if(mkfifo("/tmp/stat",0777)<0){
;
}
}
sleep(1);
printf("\t\tJOBID\tPID\tOWNER\tRUNTIME\tWAITTIME\tCREATTIME\t\tSTATE\tPRIO\n");
out=read(fd1,string,10000);
printf("%s\n",string);
close(fd1);
}
// \n or size-1 个字符时结束.
char *map_fgets(char *buf, int size, int fd)
{
char *p_map;
int off = lseek(fd, 0, SEEK_CUR);
int map_start = (off / 4096) * 4096;
int distanc = off - map_start;
int len = lseek(fd, 0, SEEK_END);
int i, j;
if (len == off)
return NULL;
p_map = mmap(NULL, BUFSIZ, PROT_READ, MAP_PRIVATE, fd, map_start); //立即 写出 munmap(p_map, BUFSIZ);
if (p_map == MAP_FAILED)
error_sys("mmap error :");
for (i = distanc, j = 0; j < size - 1; i++, j++) {
buf[j] = p_map[i];
if (p_map[i] == '\n') {
j++;
break;
}
}
buf[j] = '\0';
lseek(fd, off + j, SEEK_SET);
munmap(p_map, BUFSIZ);
return buf;
}
/**
* \brief NCCL implementation of \ref gpucomm_new.
*/
static int comm_new(gpucomm **comm_ptr, gpucontext *ctx,
gpucommCliqueId comm_id, int ndev, int rank) {
gpucomm *comm;
ncclResult_t err;
ASSERT_CTX(ctx);
GA_CHECK(setup_lib(ctx->err));
comm = calloc(1, sizeof(*comm)); // Allocate memory
if (comm == NULL) {
*comm_ptr = NULL; // Set to NULL if failed
return error_sys(ctx->err, "calloc");
}
comm->ctx = (cuda_context *)ctx; // convert to underlying cuda context
// So that context would not be destroyed before communicator
comm->ctx->refcnt++;
cuda_enter(comm->ctx); // Use device
err = ncclCommInitRank(&comm->c, ndev, *((ncclUniqueId *)&comm_id), rank);
cuda_exit(comm->ctx);
TAG_COMM(comm);
if (err != ncclSuccess) {
*comm_ptr = NULL; // Set to NULL if failed
comm_clear(comm);
return error_nccl(ctx->err, "ncclCommInitRank", err);
}
*comm_ptr = comm;
return GA_NO_ERROR;
}
void test_app()
{
int sfd = 0;
char recvbuff[4096];
int len;
int i;
struct sockaddr_in servaddr;
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(ECHO_PORT);
inet_pton(AF_INET, dst, &servaddr.sin_addr);
if ( (sfd = stupid_socket(AF_INET, SOCK_DGRAM, 0)) == -1)
error_sys("error socket");
for (i = 0; i < 2; i++)
{
stupid_sendto(sfd, content[i], strlen(content[i]), &servaddr,
sizeof(servaddr));
len = stupid_recvfrom(sfd, recvbuff, 4096, &servaddr, sizeof(servaddr));
recvbuff[len] = 0;
printf("%s\n", recvbuff);
}
sfd_release(sfd);
}
int gpucontext_props_new(gpucontext_props **res) {
gpucontext_props *r = calloc(1, sizeof(gpucontext_props));
if (r == NULL) return error_sys(global_err, "calloc");
r->dev = -1;
r->sched = GA_CTX_SCHED_AUTO;
r->flags = 0;
r->kernel_cache_path = NULL;
r->initial_cache_size = 0;
r->max_cache_size = (size_t)-1;
*res = r;
return GA_NO_ERROR;
}
int list (int argc, char **argv)
{
char line[MAXCMDLEN + 1];
char *word_break;
FILE *fp;
/* No additional options or arguments.
*/
if (argc > 2) {
error ("Extra arguments: list takes none");
return 1;
}
(void)argv;
if (!(fp = iq_client_connect ()))
return 1;
if (fprintf (fp, "LIST\r\n") == EOF) {
error_sys ("Could not submit command to server");
fclose (fp);
return 1;
}
if (!fgets (line, sizeof line - 1, fp)) {
error ("Server did not respond to command!");
fclose (fp);
return 1;
}
/* Extract the first word and compare. */
word_break = line + strcspn (line, " \t\r\n");
if (*word_break)
*word_break++ = 0;
if (strcasecmp (line, RESPONSE_LIST_COMING)) {
error ("Server responded with error: %s", word_break);
fclose (fp);
return 1;
}
while (fgets (line, sizeof line - 1, fp)) {
fputs (line, stdout);
}
fclose (fp);
return 0;
}
int mem_pool_free(void)
{
char *p, *q;
size_t size;
if (head == NULL)
return 0;
if (((memctl_t *)head)->next == NULL) {
//只有一个池
p = head;
size = get_size(head);
if (sfree(head, size) == -1)
error_sys("sfree failed");
return 0;
}
for (p = head; p; p = q) {
q = (char *)((memctl_t *)p)->next;
size = get_size(p);
if (sfree(p, size) == -1)
error_sys("sfree failed");
}
return 0;
}
int main(){
int fifo;
MemoryAccessRequest request;
ptr_memAccReq = &request;
while (1){
/* 在阻塞模式下打开FIFO */
puts("zzzzz");
if((fifo=open("/tmp/server",O_WRONLY))<0)
error_sys("open fifo failed");
puts("yyyyy");
do_request();
puts("xxxxxxxx");
write(fifo,ptr_memAccReq,sizeof(MemoryAccessRequest));
close(fifo);
}
}
int main(void)
{
int fd;
char buf[BUFSIZ];
char *d;
int i = 0;
if ((fd = open("hello", O_RDONLY)) == -1)
error_sys("open error: ");
while ((d = map_fgets(buf, BUFSIZ, fd)) != NULL) {
//fputs(buf, stdin);
printf("buf[%d]: %s", i, d);
i++;
}
close(fd);
return 0;
}
int obtainUIDandGID(const char *name, uid_t *pw_uid, gid_t *pw_gid)
{
/* Obtain UID and GID from passwd entry identified by name */
struct passwd *pw_entry;
char msg[100];
if ((pw_entry = getpwnam(name)) == NULL)
{
snprintf(msg, sizeof(msg), "failed to get password entry for %s", name);
error_sys(msg);
return FALSE;
}
else
{
*pw_uid = pw_entry->pw_uid;
*pw_gid = pw_entry->pw_gid;
return TRUE;
}
}
int retrieve (Job *job)
{
CURL *curl;
CURLcode rc;
FILE *outfp;
JobOptions *opts;
debug ("Retrieval process %d running job:", getpid());
debug_dump_job (job);
if (job->options.continue_from) {
outfp = fopen (job->options.save_to, "a");
} else {
outfp = fopen (job->options.save_to, "w");
}
if (!outfp) {
error_sys ("could not open `%s' for output",
job->options.save_to);
return 1;
}
curl = curl_easy_init ();
if (!curl) {
error ("could not initialize libcurl");
write_error_file (job, "could not initialize libcurl");
fclose (outfp);
return 1;
}
curl_easy_setopt (curl, CURLOPT_FILE, outfp);
curl_easy_setopt (curl, CURLOPT_URL, job->source_url);
curl_easy_setopt (
curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, (void *)job);
curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, job->error);
curl_easy_setopt (curl, CURLOPT_NOPROGRESS, 0);
if (job->options.continue_from) {
curl_easy_setopt (curl, CURLOPT_RESUME_FROM,
(long)job->options.continue_from);
}
/* Now load the job's user-configurable parameters:
*/
opts = &job->options;
if (opts->proxy[0]) {
curl_easy_setopt (curl, CURLOPT_PROXY, opts->proxy);
}
if (opts->follow) {
curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1);
curl_easy_setopt (curl, CURLOPT_MAXREDIRS, opts->follow);
} else {
curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 0);
}
if (opts->user_agent[0]) {
curl_easy_setopt (curl, CURLOPT_USERAGENT, opts->user_agent);
}
if (opts->use_ascii) {
curl_easy_setopt (curl, CURLOPT_TRANSFERTEXT, 1);
}
if (opts->referer[0]) {
curl_easy_setopt (curl, CURLOPT_REFERER, opts->referer);
}
if (opts->include) {
curl_easy_setopt (curl, CURLOPT_HEADER, 1);
}
if (opts->interface[0]) {
curl_easy_setopt (curl, CURLOPT_INTERFACE, opts->interface);
}
if (opts->proxy_auth[0]) {
curl_easy_setopt (curl, CURLOPT_PROXYUSERPWD, opts->proxy_auth);
}
if (opts->auth[0]) {
curl_easy_setopt (curl, CURLOPT_USERPWD, opts->auth);
}
/* If wmget is verbose, set libcurl to verbose too...
*/
if (output_level () > OL_NORMAL)
curl_easy_setopt (curl, CURLOPT_VERBOSE, 1);
/* Finally, perform the download:
*/
job->status = J_RUNNING;
rc = curl_easy_perform (curl);
if (rc) {
if (job->status == J_STOPPING) {
info ("aborted by user");
job->status = J_COMPLETE;
} else {
error (job->error);
write_error_file (job, job->error);
job->status = J_COMPLETE;
}
} else {
job->status = J_COMPLETE;
}
curl_easy_cleanup (curl);
fclose (outfp);
if (rc)
return 1;
return 0;
}
/* ./app src dest [n] */
int main(int argc, char **argv)
{
int n = 5, i, j;
off_t m_off_s = 0, m_off_d = 0;
//size_t size = 1024 * 1024;
int err;
size_t size = 1024 * 4;
int left_size;
if (argc == 4)
n = atoi(argv[3]);
pthread_t tid[n];
memset(tid, 0,sizeof(tid));
// tid = malloc(sizeof(*tid) * n);
p = malloc(sizeof(*p));
memset((void *)p, 0, sizeof(*p));
if ((p->fd_s = open(argv[1], O_RDWR)) == -1) //以大文件方式打开
error_sys("open src");
if ((p->fd_d = open(argv[2], O_RDWR | O_CREAT | O_TRUNC, 0644)) == -1) //以大文件方式打开
error_sys("open dest");
left_size = lseek(p->fd_s, 0, SEEK_END);
p->total = left_size;
lseek(p->fd_d, left_size - 1, SEEK_SET);
write(p->fd_d, "0", 1);
while (left_size > 0) { //文件结尾处跳出
p->mmap_s = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, p->fd_s, m_off_s);
if (p->mmap_s == MAP_FAILED)
error_sys("mmap src");
m_off_s += size;
p->mmap_d = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, p->fd_d, m_off_d);
if (p->mmap_d == MAP_FAILED)
error_sys("mmap dest");
m_off_d += size;
PTHREAD_THREADS_MAX;
p->index = 0;
p->len = ((int)size)/(n);
for (i = 0; i < n - 1; i++) {
err = pthread_create(&tid[i], NULL, ptr_fn, (void *)p->index); //这是个在变化的值p->index,
if (err != 0) {
printf("%dth child\n", i);
perror("pthread_create");
}
p->index += p->len;
}
for (j = 0; j < n - 1; j++) {
err = pthread_join(tid[j], NULL); /* 381 个子线程时出现段错误*/
if (err != 0)
perror("pthread_join");
}
copy((void *)p->index, (void *)(p->len + size%n));
munmap(p->mmap_s, size);
munmap(p->mmap_d, size);
left_size -= size;
}
close(p->fd_s);
close(p->fd_d);
return 0;
}
int main(int argc,char *argv[])
{
int p=2;//The priority is highest!
int fd;
char c,*offset;
struct jobcmd enqcmd;
if(argc==1)
{
usage();//print help message!
return 1;
}
while(--argc>0 && (*++argv)[0]=='-')
{
while(c=*++argv[0])
switch(c)
{
case 'p':p=atoi(*(++argv));
argc--;
break;
default:
printf("Illegal option %c\n",c);
return 1;
}
}
if(p<0||p>2)
{
printf("invalid priority:must between 0 and 2\n");
return 1;
}
enqcmd.type=ENQ;
enqcmd.defpri=p;
enqcmd.owner=getuid();
enqcmd.argnum=argc;
offset=enqcmd.data;
while (argc-->0)
{
strcpy(offset,*argv);
strcat(offset,":");
offset=offset+strlen(*argv)+1;
argv++;
}
#ifdef DEBUG
printf("Task 4:\n"
"enqcmd cmdtype \t%d(-1 means ENQ,-2 means DEQ,-3 means STAT)\n"
"enqcmd owner\t%d\n"
"enqcmd defpri\t%d\n"
"enqcmd data\t%s\n"
"enqcmd argnum\t%d\n",
enqcmd.type,enqcmd.owner,enqcmd.defpri,enqcmd.data,enqcmd.argnum);
#endif
if((fd=open("/tmp/server",O_WRONLY))<0)
error_sys("enq open fifo failed");
if(write(fd,&enqcmd,DATALEN)<0)
error_sys("enq write failed");
close(fd);
return 0;
}
int main (int argc, char **argv )
{
pid_t pid;
uid_t UID;
gid_t GID;
pid_t pidwait;
int waitstat;
int s;
int max_fd;
/* Sanity check */
if (argc > MAX_ARGS)
{
error_sys("arg buffer too small");
exit(-1);
}
if (geteuid() != 0)
{
error_sys("must be called by root");
exit(-1);
}
/* fork child that will become prelude-correlator */
if ((pid = fork()) < 0)
error_sys("fork error");
else
{
if (pid == 0)
{
/* We're the child */
char *args[MAX_ARGS];
unsigned int i;
/* Become session leader */
setsid();
/* Change working directory to root directory.
The current working directory could be a mounted
filesystem; if the daemon stays on a mounted
filesystem it could prevent the filesystem from
being umounted. */
chdir("/");
/* Clear out file creation mask */
umask(0);
/* Close unneeded file descriptors */
max_fd = (int) sysconf(_SC_OPEN_MAX);
if (max_fd == -1)
max_fd = getdtablesize();
for (s = 3; s < max_fd; s++)
(void) close(s);
if (!obtainUIDandGID(PRELUDE_CORRELATOR_USER, &UID, &GID))
exit(-1);
/* Drop privileges immediately */
if (setgid(GID) < 0)
{
/* It is VERY important to check return
value and not continue if setgid fails
*/
error_sys ("setgid failed");
exit (-1);
}
if (setuid(UID) < 0)
{
/* It is VERY important to check return
value and not continue if setuid fails
*/
error_sys ("setuid failed");
exit (-1);
}
/* Build calling argv */
args[0] = PRELUDE_CORRELATOR_PATH;
for (i=1;i<argc;i++)
{
args[i] = argv[i];
}
args[i++] = NULL;
/* Finally transform self into prelude-correlator */
if (execvp(PRELUDE_CORRELATOR_PATH, args) < 0)
error_sys("execve error");
else
; /* avoid if-then ambiguity */
}
else
{
/* We're the parent
Terminate
*/
exit(0);
}
}
}
/*./client up/down filename*/
int main(int argc, char *argv[])
{
char *usr_name;
int sfd, n, i, nsend;
struct sockaddr_in serv_addr;
char buf[1024];
int fd, len_argv;
char path[1024];
int up_or_down = -1; /* 0：up 1：down */
char serv_ip[1024];
char src[1024];
char dest[1024];
char file_name[1024];
struct stat st;
regex_t preg;
char *regex = "[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}";
int reg;
regmatch_t pmatch[2];
size_t nmatch = 2;
memset(pmatch, 0, sizeof(pmatch));
memset(&preg, 0, sizeof(preg));
regcomp(&preg, regex, 0);
full(argv[1], argv[2], serv_ip, src, dest, &up_or_down, file_name);
//reg = regexec(&preg, serv_ip, nmatch, pmatch, 0);
reg = regexec(&preg, "127.0.0.1", nmatch, pmatch, 0); /* 如何做呢？？？？ */
if (reg == 0) {
printf("serv_ip is error\n");
error_sys("regexec");
}
printf("serv_ip:%s\nsrc:%s\ndest:%s\n", serv_ip, src, dest);
if (up_or_down == UP)
printf("upload\n");
else if (up_or_down == DOWN)
printf("download\n");
printf("filename:%s\n", file_name);
#if 1
sfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sfd == -1)
return -1;
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(SERV_PORT);
inet_pton(AF_INET, SERV_IP, &serv_addr.sin_addr.s_addr);
//sprintf(path, "%s/%s", ROOT, usr_name);
if (up_or_down == UP) { /* 上传 */
lstat(src, &st);
if(S_ISDIR(st.st_mode)) {
printf("%s is dir\n", src);
return -1;
}
sprintf(buf, "up %s %s", dest, file_name); /* 上传标志 */
PRINT_S(buf);
PRINT_S(dest);
PRINT_S(file_name);
n = sendto(sfd, buf, strlen(buf), 0,
(struct sockaddr *)&serv_addr, sizeof(serv_addr));
PRINT_S("here1");
#if 0
n = recvfrom(sfd, buf, 1024, 0, NULL, NULL);
buf[n] = '\0';
if (strcmp(buf, "OK")) {
printf("fail to up link ...\n");
return 0;
}
#endif
fd = open(src, O_RDONLY); /* 数据 */
if (fd == -1)
error_sys("open");
do {
nsend = sendto(sfd, buf, n, 0,
(struct sockaddr *)&serv_addr, sizeof(serv_addr));
} while ((n = read(fd, buf, 1024)) != 0);
close(fd);
// tryagain:
n = sendto(sfd, "UP_END", strlen("UP_END"), 0, /* 结束标志 */
(struct sockaddr *)&serv_addr, sizeof(serv_addr));
#if 0
n = recvfrom(sfd, buf, 1024, 0, NULL, NULL);
buf[n] = '\0';
if (strcmp(buf, "OK")) {
sleep(1); /* 等待因网络原因产生的数据无法到达*/
printf("fail to logout...\n");
goto tryagain;
}
#endif
} else if (up_or_down == DOWN) { /* 下载 */
lstat(dest, &st);
if(S_ISREG(st.st_mode)) {
printf("%s is reg file \n", dest);
return -1;
}
sprintf(buf, "down %s %s", src, file_name);
PRINT_S(buf);
PRINT_S(src);
PRINT_S(file_name);
n = sendto(sfd, buf, strlen(buf), 0,
(struct sockaddr *)&serv_addr, sizeof(serv_addr));
#if 0
n = recvfrom(sfd, buf, 1024, 0, NULL, NULL); /*需添加更安全的处理*/
buf[n] = '\0';
if (strcmp(buf, "OK")) {
printf("fail to up link ...\n");
return 0;
}
#endif
if (dest[strlen(dest)] == '/')
dest[strlen(dest)] = '\0';
sprintf(path, "%s/%s", dest, file_name);
PRINT_S(path);
PRINT_S(dest);
PRINT_S(file_name);
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
do {
PRINT_S("here2");
n = recvfrom(sfd, buf, 1024, 0, NULL, NULL);
if (is_down_end(buf)) {
close(fd);
break;
}
write(fd, buf, n);
} while (1);
} else { /* 不合法 */
printf("useage: ./client up/down file1\n");
}
close(sfd);
#endif
return 0;
}
int main (int argc, char **argv )
{
pid_t pid;
uid_t UID;
gid_t GID;
pid_t pidwait;
int waitstat;
int maxfd;
int s;
/* Sanity check */
if (argc > MAX_ARGS)
{
error_sys("arg buffer too small");
exit(-1);
}
if (geteuid() != 0)
{
error_sys("must be called by root");
exit(-1);
}
/* fork child that will become prelude-manager */
if ((pid = fork()) < 0)
error_sys("fork error");
else
{
if (pid == 0)
{
/* We're the child */
char *args[MAX_ARGS];
unsigned int i;
/* Become session leader */
setsid();
/* Change working directory to root directory.
The current working directory could be a mounted
filesystem; if the daemon stays on a mounted
filesystem it could prevent the filesystem from
being umounted. */
chdir("/");
/* Clear out file creation mask */
umask(0);
/* Close unneeded file descriptors */
maxfd = (int) sysconf(_SC_OPEN_MAX);
if (maxfd == -1)
maxfd = getdtablesize();
for (s = 3; s < maxfd; s++)
(void) close(s);
/* Increase limit on number of open file descriptors if necessary */
maxfd = fdlim_get(1);
if (maxfd < 0)
error_sys("fdlim_get: bad value");
if (maxfd > MAXMAXFD)
maxfd = MAXMAXFD;
if (maxfd > fdlim_get(0))
fdlim_set(maxfd);
/* Build calling argv */
args[0] = PRELUDE_MANAGER_PATH;
for (i=1;i<argc;i++)
{
args[i] = argv[i];
}
args[i++] = NULL;
/* Finally transform self into prelude-manager */
if (execvp(PRELUDE_MANAGER_PATH, args) < 0)
error_sys("execve error");
else
; /* avoid if-then ambiguity */
}
else
{
/* We're the parent
Terminate
*/
exit(0);
}
}
}
