This patch adds the linkat syscall to linux-user.
Index: qemu/linux-user/syscall.c
===================================================================
--- qemu.orig/linux-user/syscall.c 2007-09-19 06:24:47.000000000 -0600
+++ qemu/linux-user/syscall.c 2007-09-19 06:25:51.000000000 -0600
@@ -156,6 +156,7 @@
#define __NR_sys_getcwd1 __NR_getcwd
#define __NR_sys_getdents __NR_getdents
#define __NR_sys_getdents64 __NR_getdents64
+#define __NR_sys_linkat __NR_linkat
#define __NR_sys_mkdirat __NR_mkdirat
#define __NR_sys_mknodat __NR_mknodat
#define __NR_sys_openat __NR_openat
@@ -194,6 +195,10 @@
#endif
_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
loff_t *, res, uint, wh);
+#if defined(TARGET_NR_linkat) && defined(__NR_linkat)
+_syscall5(int,sys_linkat,int,olddirfd,const char *,oldpath,
+ int,newdirfd,const char *,newpath,int,flags)
+#endif
#if defined(TARGET_NR_mkdirat) && defined(__NR_mkdirat)
_syscall3(int,sys_mkdirat,int,dirfd,const char *,pathname,mode_t,mode)
#endif
@@ -2766,6 +2771,28 @@
unlock_user(p, arg1, 0);
}
break;
+#if defined(TARGET_NR_linkat) && defined(__NR_linkat)
+ case TARGET_NR_linkat:
+ if (!arg2 || !arg4) {
+ ret = -EFAULT;
+ goto fail;
+ }
+ {
+ void * p2 = NULL;
+ p = lock_user_string(arg2);
+ p2 = lock_user_string(arg4);
+ if (!access_ok(VERIFY_READ, p, 1)
+ || !access_ok(VERIFY_READ, p2, 1))
+ ret = -EFAULT;
+ else
+ ret = get_errno(sys_linkat(arg1, p, arg3, p2, arg5));
+ if (p2)
+ unlock_user(p, arg2, 0);
+ if (p)
+ unlock_user(p2, arg4, 0);
+ }
+ break;
+#endif
case TARGET_NR_unlink:
p = lock_user_string(arg1);
ret = get_errno(unlink(p));
Index: qemu/linux-user/arm/syscall_nr.h
===================================================================
--- qemu.orig/linux-user/arm/syscall_nr.h 2007-09-19 06:24:10.000000000 -0600
+++ qemu/linux-user/arm/syscall_nr.h 2007-09-19 06:25:08.000000000 -0600
@@ -332,4 +332,5 @@
#define TARGET_NR_futimesat 326
#define TARGET_NR_unlinkat 328
#define TARGET_NR_renameat 329
+#define TARGET_NR_linkat 330
#define TARGET_NR_utimensat 348
