问题描述
我已经找到一种方法,做我想做的,但它似乎很脏。我只想做一个简单的事情。
的sprintf(serv_name,Fattura-%i.txt,GETPID());
FD =开(serv_name,PERMISSION | O_CREAT);
如果(FD℃,){
PERROR(客户:\\ n);
出口(1);
}
我想,新的文件,而不是在我的程序的目录中创建,它是直接创建一个子目录。例如我的文件在./program/我想,这些文件将在./program/newdir创建/
我试图直接放在字符串serv_name我想要的文件的路径,它像
的sprintf(./ NEWDIR / fattura-%i.txt,GETPID());
也试过\\\\,而不是/。如何才能做到这一点?
我发现的唯一办法是,在节目的最后,把一个:
的mkdir(NEWDIR,IPC_CREAT);
系统(搭配chmod 777 NEWDIR);
系统(CP Fattura - * TXT ./fatture/。);
系统(RM Fattura - * .TXT);
试试这个,它的工作原理。我改变了:我用的fopen
而不是打开
我用的snprintf
而不是冲刺
,因为它是更安全的:
的#include<&stdio.h中GT;
#包括LT&; SYS / stat.h>
#包括LT&; SYS / types.h中>
#包括LT&;&unistd.h中GT;
#包括LT&;&stdlib.h中GT;诠释主(){
炭serv_name [1000];
MKDIR(NEWDIR,S_IRWXU | S_IRWXG | S_IRWXO);
的snprintf(serv_name,sizeof的(serv_name),NEWDIR / Fattura-%i.txt,GETPID());
FILE * F = FOPEN(serv_name,W);
如果(F℃,){
PERROR(客户:\\ n);
出口(1);
}
}
I already find a way to do what I want, but it seem dirty. I just want to do a simple thing
sprintf(serv_name, "Fattura-%i.txt", getpid());
fd = open(serv_name, PERMISSION | O_CREAT);
if (fd<0) {
perror("CLIENT:\n");
exit(1);
}
I want that the new file, instead of be created in the directory of my program, it's created directly in a subdirectory. example my files are in ./program/ i want that the files will be created in ./program/newdir/
I tried to put directly in the string "serv_name" the path that I want for the file, it was like
sprintf("./newdir/fattura-%i.txt",getpid());
Also tried the \\ and not the /. How can this be done?The only way that I found was, at the end of the program, put a:
mkdir("newdir",IPC_CREAT);
system("chmod 777 newdir");
system("cp Fattura-*.txt ./fatture/");
system("rm Fattura-*.txt");
Try this, it works. What I changed: I used fopen
instead of open
and I used snprintf
instead of sprints
, because it's safer:
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
int main() {
char serv_name[1000];
mkdir("newdir", S_IRWXU | S_IRWXG | S_IRWXO);
snprintf(serv_name, sizeof(serv_name), "newdir/Fattura-%i.txt", getpid());
FILE* f = fopen(serv_name, "w");
if (f < 0) {
perror("CLIENT:\n");
exit(1);
}
}
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