xref: /minix3/minix/lib/libc/sys/open.c (revision 433d6423c39e34ec4b79c950597bb2d236f886be)
1 #include <sys/cdefs.h>
2 #include "namespace.h"
3 #include <lib.h>
4 
5 #include <fcntl.h>
6 #include <stdarg.h>
7 #include <string.h>
8 
open(const char * name,int flags,...)9 int open(const char *name, int flags, ...)
10 {
11   va_list argp;
12   message m;
13   int call;
14 
15   memset(&m, 0, sizeof(m));
16   va_start(argp, flags);
17   /* Depending on whether O_CREAT is set, a different message layout is used,
18    * and therefore a different call number as well.
19    */
20   if (flags & O_CREAT) {
21 	m.m_lc_vfs_creat.len = strlen(name) + 1;
22 	m.m_lc_vfs_creat.flags = flags;
23 	m.m_lc_vfs_creat.mode = va_arg(argp, mode_t);
24 	m.m_lc_vfs_creat.name = (vir_bytes)name;
25 	call = VFS_CREAT;
26   } else {
27 	_loadname(name, &m);
28 	m.m_lc_vfs_path.flags = flags;
29 	call = VFS_OPEN;
30   }
31   va_end(argp);
32   return (_syscall(VFS_PROC_NR, call, &m));
33 }
34