permstring.c

ソースコードを見る。

関数
void	permstring (char *perms, mode_t mode)
	Produce a string representation of Unix mode bits like that used by ls(1).

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関数

void permstring	(	char *	perms,
		mode_t	mode
	)

Produce a string representation of Unix mode bits like that used by ls(1).

引数:

buf

buffer of at least 11 characters

permstring.c の 29 行で定義されています。

参照元 list_file()・list_file_entry()・log_formatted().

{
        static const char *perm_map = "rwxrwxrwx";
        int i;

        strcpy(perms, "----------");
        
        for (i=0;i<9;i++) {
                if (mode & (1<<i)) perms[9-i] = perm_map[8-i];
        }

        /* Handle setuid/sticky bits.  You might think the indices are
         * off by one, but remember there's a type char at the
         * start.  */
        if (mode & S_ISUID)
                perms[3] = (mode & S_IXUSR) ? 's' : 'S';

        if (mode & S_ISGID)
                perms[6] = (mode & S_IXGRP) ? 's' : 'S';
        
#ifdef S_ISVTX
        if (mode & S_ISVTX)
                perms[9] = (mode & S_IXOTH) ? 't' : 'T';
#endif
                
        if (S_ISLNK(mode)) perms[0] = 'l';
        if (S_ISDIR(mode)) perms[0] = 'd';
        if (S_ISBLK(mode)) perms[0] = 'b';
        if (S_ISCHR(mode)) perms[0] = 'c';
        if (S_ISSOCK(mode)) perms[0] = 's';
        if (S_ISFIFO(mode)) perms[0] = 'p';
}

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