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Damon(12) ÇÁ·Î±×·¥À» ¸¸µé´Ù º¸¸é, ÀÌÀü¿¡ µ¿ÀÏÇÑ ÇÁ·Î¼¼½º°¡ ¶°ÀÖ´ÂÁö È®ÀÎÀ» ÇØ¼, ¶°ÀÖÀ» °æ¿ì ¹Ù·Î ÇÁ·Î±×·¥ÀÌ Á¾·áµÇµµ·Ï ÇÏ´Â Äڵ带 ³Ö¾î¾ßÇÒ Çʿ䰡 ÀÖ½À´Ï´Ù. ÀÌ·¯ÇÑ °æ¿ì »ç¿ë°¡´É ÇÑ °£´ÜÇÑ ÇÔ¼ö ÀÔ´Ï´Ù. ´ÙÀ½°ú °°Àº ÇÁ·Î¼¼½º·Î ÀÛµ¿ÇÕ´Ï´Ù.
ÀÌ ÄÚµå´Â ¸®´ª½º(12) kernel(12) 2.6¿¡¼ Å×½ºÆ®µÇ¾ú½À´Ï´Ù. ¾Æ¸¶µµ 2.2, 2.4¿¡¼µµ Àßµ¹¾Æ°¥ °ÍÀ¸·Î »ý°¢µË´Ï´Ù. +------+
| ½ÃÀÛ |
+------+
|
+------------+
| Pid |
| ÆÄÀÏ Ã¼Å© |
+------------+
|
+-----------------------+ Yes
| Pid ÆÄÀÏÀÌ Á¸ÀçÇϴ°¡ | ---------> Á¾·á
+-----------------------+
| NO
|
+------------------------+ Yes
| ÇØ´ç PIDÀÇ /procÆÄÀÏÀÌ | --------> Á¾·á
| Á¸ÀçÇϴ°¡ |
+------------------------+
| NO
|
+------------------------+
| ÀÚ½ÅÀÇ PID·Î |
| Pid ÆÄÀÏÀ» µ¤¾î¾¸ |
+------------------------+
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ÄÚµå#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> int CheckProcess(char *pfile) { FILE *fp; char pid[16]; char process[256]; int rtv = 0; fp = fopen(pfile, "r"); if (fp == NULL) { return 0; } if (fgets(pid, sizeof(pid) - 1, fp) == NULL) { fclose(fp); return 0; } fclose(fp); pid[strlen(pid)-1] = 0x00; sprintf(process, "/proc/%s/exe", pid); if (access(process, F_OK) == 0) { return atoi(pid); } return 0; } int WritePid(char *pfile) { FILE *fp; char pid[16]; sprintf(pid, "%d\n", getpid()); fp = fopen(pfile,"w"); fputs(pid, fp); fclose(fp); } |
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