1 #define _GNU_SOURCE	/* for Linux O_DIRECT */
2 #include <u.h>
3 #define NOPLAN9DEFINES
4 #include <libc.h>
5 #ifndef O_DIRECT
6 #define O_DIRECT 0
7 #endif
8 
9 int
10 p9open(char *name, int mode)
11 {
12 	int cexec, rclose;
13 	int fd, umode;
14 
15 	umode = mode&3;
16 	cexec = mode&OCEXEC;
17 	rclose = mode&ORCLOSE;
18 	mode &= ~(3|OCEXEC|ORCLOSE);
19 	if(mode&OTRUNC){
20 		umode |= O_TRUNC;
21 		mode ^= OTRUNC;
22 	}
23 	if(mode&ODIRECT){
24 		umode |= O_DIRECT;
25 		mode ^= ODIRECT;
26 	}
27 	if(mode){
28 		werrstr("mode 0x%x not supported", mode);
29 		return -1;
30 	}
31 	fd = open(name, umode);
32 	if(fd >= 0){
33 		if(cexec)
34 			fcntl(fd, F_SETFL, FD_CLOEXEC);
35 		if(rclose)
36 			remove(name);
37 	}
38 	return fd;
39 }