minix/lib/libc/sys-minix/pipe.c
David van Moolenbroek 24ec0d73b5 Clean up interface to PM and VFS
- introduce new call numbers, names, and field aliases;
- initialize request messages to zero for all ABI calls;
- format callnr.h in the same way as com.h;
- redo call tables in both servers;
- remove param.h namespace pollution in the servers;
- make brk(2) go to VM directly, rather than through PM;
- remove obsolete BRK, UTIME, and WAIT calls;
- clean up path copying routine in VFS;
- move remaining system calls from libminlib to libc;
- correct some errno-related mistakes in libc routines.

Change-Id: I2d8ec5d061cd7e0b30c51ffd77aa72ebf84e2565
2014-03-01 09:05:01 +01:00

31 lines
472 B
C

#include <sys/cdefs.h>
#include "namespace.h"
#include <lib.h>
#include <string.h>
#include <unistd.h>
#ifdef __weak_alias
__weak_alias(pipe, _pipe)
__weak_alias(pipe2, _pipe2)
#endif
int
pipe2(int fild[2], int flags)
{
message m;
memset(&m, 0, sizeof(m));
m.VFS_PIPE2_FLAGS = flags;
if (_syscall(VFS_PROC_NR, VFS_PIPE2, &m) < 0) return(-1);
fild[0] = m.VFS_PIPE2_FD0;
fild[1] = m.VFS_PIPE2_FD1;
return(0);
}
int
pipe(int fild[2])
{
return pipe2(fild, 0);
}