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#include "lib.h"
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#include <string.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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#include "sys9.h"
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#include "dir.h"
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int
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access(const char *name, int mode)
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{
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	int fd;
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	Dir *db;
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	struct stat st;
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	static char omode[] = {
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		0,
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		3,
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		1,
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		2,
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		0,
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		2,
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		2,
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		2
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	};
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	char tname[1024];
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	if(mode == 0){
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		db = _dirstat(name);
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		if(db == nil){
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			_syserrno();
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			return -1;
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		}
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		free(db);
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		return 0;
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	}
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	fd = open(name, omode[mode&7]);
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	if(fd >= 0){
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		close(fd);
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		return 0;
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	}
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	else if(stat(name, &st)==0 && S_ISDIR(st.st_mode)){
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		if(mode & (R_OK|X_OK)){
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			fd = open(name, O_RDONLY);
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			if(fd < 0)
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				return -1;
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			close(fd);
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		}
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		if(mode & W_OK){
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			strncpy(tname, name, sizeof(tname)-9);
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			strcat(tname, "/_AcChAcK");
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			fd = creat(tname, 0666);
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			if(fd < 0)
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				return -1;
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			close(fd);
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			_REMOVE(tname);
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		}
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		return 0;
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	}
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	return -1;
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}