1 be36ff68 2004-04-29 devnull #define _GNU_SOURCE	/* for Linux O_DIRECT */
 2 b3994ec5 2003-12-11 devnull #include <u.h>
 3 b3994ec5 2003-12-11 devnull #define NOPLAN9DEFINES
 4 b3994ec5 2003-12-11 devnull #include <libc.h>
 5 b3994ec5 2003-12-11 devnull 
 6 b3994ec5 2003-12-11 devnull int
 7 8ad51794 2004-03-25 devnull p9open(char *name, int mode)
 8 b3994ec5 2003-12-11 devnull {
 9 b3994ec5 2003-12-11 devnull 	int cexec, rclose;
10 b3994ec5 2003-12-11 devnull 	int fd, umode;
11 b3994ec5 2003-12-11 devnull 
12 b3994ec5 2003-12-11 devnull 	umode = mode&3;
13 b3994ec5 2003-12-11 devnull 	cexec = mode&OCEXEC;
14 b3994ec5 2003-12-11 devnull 	rclose = mode&ORCLOSE;
15 b3994ec5 2003-12-11 devnull 	mode &= ~(3|OCEXEC|ORCLOSE);
16 b3994ec5 2003-12-11 devnull 	if(mode&OTRUNC){
17 b3994ec5 2003-12-11 devnull 		umode |= O_TRUNC;
18 b3994ec5 2003-12-11 devnull 		mode ^= OTRUNC;
19 b3994ec5 2003-12-11 devnull 	}
20 be36ff68 2004-04-29 devnull 	if(mode&ODIRECT){
21 be36ff68 2004-04-29 devnull 		umode |= O_DIRECT;
22 be36ff68 2004-04-29 devnull 		mode ^= ODIRECT;
23 be36ff68 2004-04-29 devnull 	}
24 b3994ec5 2003-12-11 devnull 	if(mode){
25 b3994ec5 2003-12-11 devnull 		werrstr("mode not supported");
26 b3994ec5 2003-12-11 devnull 		return -1;
27 b3994ec5 2003-12-11 devnull 	}
28 b3994ec5 2003-12-11 devnull 	fd = open(name, umode);
29 b3994ec5 2003-12-11 devnull 	if(fd >= 0){
30 b3994ec5 2003-12-11 devnull 		if(cexec)
31 b3994ec5 2003-12-11 devnull 			fcntl(fd, F_SETFL, FD_CLOEXEC);
32 b3994ec5 2003-12-11 devnull 		if(rclose)
33 b3994ec5 2003-12-11 devnull 			remove(name);
34 b3994ec5 2003-12-11 devnull 	}
35 b3994ec5 2003-12-11 devnull 	return fd;
36 b3994ec5 2003-12-11 devnull }