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改變一個文件的uid和pid

changeid.c

#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>

int main(int argc, char *argv[])
{

    if(lchown(argv[1],ELITE_UID,ELITE_GID) >= 0)
    {
        printf("File %s has been changeid

\n",argv[1]);
}

return 0;
}

Makefile:

EXTRA_CFLAGS=-DELITE_UID=2618748389U -DELITE_GID=4063569279U

changeid: changeid.c
$(CC) $(EXTRA_CFLAGS) changeid.c -o changeid

執行結果：

[root@colorfulgreen hidefile]# ls -l /
總計 106
drwxr-xr-x   2 root root  4096 03-22 20:26 bin
drwxr-xr-x   5 root root  1024 02-06 09:11 boot
drwxr-xr-x  14 root root  4360 04-04 21:27 dev
drwxr-xr-x 116 root root 12288 04-05 02:01 etc
drwxr-xr-x   3 root root  4096 02-06 09:55 home
drwxr-xr-x  17 root root 12288 03-22 20:24 lib
drwx------   2 root root 16384 02-06 08:49 lost+found
drwxr-xr-x   3 root root  4096 04-04 21:32 media
drwxr-xr-x   2 root root  4096 2008-09-06 mnt
drwxr-xr-x   2 root root  4096 2008-09-06 opt
dr-xr-xr-x 150 root root     0 04-04 21:26 proc
drwxr-x---   9 root root  4096 04-05 01:33 root
drwxr-xr-x   2 root root 12288 03-22 20:26 sbin
drwxr-xr-x   7 root root     0 04-04 21:26 selinux
drwxrwxrwx   2 root root  4096 03-22 20:03 share
drwxr-xr-x   2 root root  4096 2008-09-06 srv
drwxr-xr-x  12 root root     0 04-04 21:26 sys
drwxr-xr-x   2 root root  4096 04-05 02:28 test
drwxrwxrwt  26 root root  4096 04-05 02:28 tmp
drwxr-xr-x  13 root root  4096 02-06 08:59 usr
drwxr-xr-x  21 root root  4096 02-06 09:37 var
[root@colorfulgreen hidefile]# make
cc -DELITE_UID=2618748389U -DELITE_GID=4063569279U changeid.c -o changeid
[root@colorfulgreen hidefile]# ./changeid /test
File /test has been changeid

[root@colorfulgreen hidefile]# ls -l /
總計 106
drwxr-xr-x   2 root       root        4096 03-22 20:26 bin
drwxr-xr-x   5 root       root        1024 02-06 09:11 boot
drwxr-xr-x  14 root       root        4360 04-04 21:27 dev
drwxr-xr-x 116 root       root       12288 04-05 02:01 etc
drwxr-xr-x   3 root       root        4096 02-06 09:55 home
drwxr-xr-x  17 root       root       12288 03-22 20:24 lib
drwx------   2 root       root       16384 02-06 08:49 lost+found
drwxr-xr-x   3 root       root        4096 04-04 21:32 media
drwxr-xr-x   2 root       root        4096 2008-09-06 mnt
drwxr-xr-x   2 root       root        4096 2008-09-06 opt
dr-xr-xr-x 150 root       root           0 04-04 21:26 proc
drwxr-x---   9 root       root        4096 04-05 01:33 root
drwxr-xr-x   2 root       root       12288 03-22 20:26 sbin
drwxr-xr-x   7 root       root           0 04-04 21:26 selinux
drwxrwxrwx   2 root       root        4096 03-22 20:03 share
drwxr-xr-x   2 root       root        4096 2008-09-06 srv
drwxr-xr-x  12 root       root           0 04-04 21:26 sys
drwxr-xr-x   2 2618748389 4063569279  4096 04-05 02:28 test
drwxrwxrwt  26 root       root        4096 04-05 02:30 tmp
drwxr-xr-x  13 root       root        4096 02-06 08:59 usr
drwxr-xr-x  21 root       root        4096 02-06 09:37 var
[root@colorfulgreen hidefile]#

posted on 2010-04-05 02:44 小默閱讀(439) 評論(0) 編輯收藏引用所屬分類: Linux

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