1 #define _GNU_SOURCE	/* for Linux O_DIRECT */
2 #include <u.h>
3 #define NOPLAN9DEFINES
4 #include <libc.h>
5 #include <sys/stat.h>
6 
7 int
8 p9create(char *path, int mode, ulong perm)
9 {
10 	int fd, cexec, umode, rclose;
11 
12 	cexec = mode&OCEXEC;
13 	rclose = mode&ORCLOSE;
14 	mode &= ~(ORCLOSE|OCEXEC);
15 
16 	/* XXX should get mode mask right? */
17 	fd = -1;
18 	if(perm&DMDIR){
19 		if(mode != OREAD){
20 			werrstr("bad mode in directory create");
21 			goto out;
22 		}
23 		if(mkdir(path, perm&0777) < 0)
24 			goto out;
25 		fd = open(path, O_RDONLY);
26 	}else{
27 		umode = (mode&3)|O_CREAT|O_TRUNC;
28 		mode &= ~(3|OTRUNC);
29 		if(mode&ODIRECT){
30 			umode |= O_DIRECT;
31 			mode &= ~ODIRECT;
32 		}
33 		if(mode&OEXCL){
34 			umode |= O_EXCL;
35 			mode &= ~OEXCL;
36 		}
37 		if(mode){
38 			werrstr("unsupported mode in create");
39 			goto out;
40 		}
41 		fd = open(path, umode, perm);
42 	}
43 out:
44 	if(fd >= 0){
45 		if(cexec)
46 			fcntl(fd, F_SETFL, FD_CLOEXEC);
47 		if(rclose)
48 			remove(path);
49 	}
50 	return fd;
51 }