mirror of
https://github.com/drasko/codezero.git
synced 2026-01-12 10:53:16 +01:00
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
|
|
* l4/posix glue for open()
|
|
*
|
|
* Copyright (C) 2007 Bahadir Balban
|
|
*/
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
#include <sys/shm.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <l4lib/arch/syscalls.h>
|
|
#include <l4lib/arch/syslib.h>
|
|
#include <l4lib/ipcdefs.h>
|
|
#include <fcntl.h>
|
|
|
|
static inline int l4_open(const char *pathname, int flags, mode_t mode)
|
|
{
|
|
int fd;
|
|
|
|
write_mr(L4SYS_ARG0, (unsigned long)pathname);
|
|
write_mr(L4SYS_ARG1, flags);
|
|
|
|
/* Call pager with shmget() request. Check ipc error. */
|
|
if ((errno = l4_sendrecv(VFS_TID, VFS_TID, L4_IPC_TAG_OPEN)) < 0) {
|
|
printf("%s: L4 IPC Error: %d.\n", __FUNCTION__, errno);
|
|
return -1;
|
|
}
|
|
/* Check if syscall itself was successful */
|
|
if ((fd = l4_get_retval()) < 0) {
|
|
printf("%s: OPEN Error: %d.\n", __FUNCTION__, fd);
|
|
errno = fd;
|
|
return -1;
|
|
|
|
}
|
|
return fd;
|
|
}
|
|
|
|
int open(const char *pathname, int oflag, ...)
|
|
{
|
|
mode_t mode = 0;
|
|
|
|
if (oflag & O_CREAT) {
|
|
va_list arg;
|
|
va_start(arg, oflag);
|
|
mode = va_arg(arg, mode_t);
|
|
va_end(arg);
|
|
}
|
|
return l4_open(pathname, oflag, mode);
|
|
}
|
|
|