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[Qemu-devel] [PATCH 16/33] linux-user: Split out link, linkat
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 16/33] linux-user: Split out link, linkat |
Date: |
Fri, 1 Jun 2018 00:30:33 -0700 |
Signed-off-by: Richard Henderson <address@hidden>
---
linux-user/syscall.c | 77 +++++++++++++++++++++++++-------------------
1 file changed, 43 insertions(+), 34 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index e208f8647a..b5736436f8 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8078,6 +8078,43 @@ IMPL(fork)
}
#endif
+#ifdef TARGET_NR_link
+IMPL(link)
+{
+ char *p1 = lock_user_string(arg1);
+ char *p2 = lock_user_string(arg2);
+ abi_long ret = -TARGET_EFAULT;
+
+ if (p1 && p2) {
+ ret = get_errno(link(p1, p2));
+ }
+ unlock_user(p1, arg1, 0);
+ unlock_user(p2, arg2, 0);
+ return ret;
+}
+#endif
+
+#if defined(TARGET_NR_linkat)
+IMPL(linkat)
+{
+ char *p1, *p2;
+ abi_long ret;
+
+ if (is_hostfd(arg1)) {
+ return -TARGET_EBADF;
+ }
+ p1 = lock_user_string(arg2);
+ p2 = lock_user_string(arg4);
+ ret = -TARGET_EFAULT;
+ if (p1 && p2) {
+ ret = get_errno(linkat(arg1, p1, arg3, p2, arg5));
+ }
+ unlock_user(p1, arg2, 0);
+ unlock_user(p2, arg4, 0);
+ return ret;
+}
+#endif
+
#if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
IMPL(name_to_handle_at)
{
@@ -8315,40 +8352,6 @@ IMPL(everything_else)
char *fn;
switch(num) {
-#ifdef TARGET_NR_link
- case TARGET_NR_link:
- {
- void * p2;
- p = lock_user_string(arg1);
- p2 = lock_user_string(arg2);
- if (!p || !p2)
- ret = -TARGET_EFAULT;
- else
- ret = get_errno(link(p, p2));
- unlock_user(p2, arg2, 0);
- unlock_user(p, arg1, 0);
- }
- return ret;
-#endif
-#if defined(TARGET_NR_linkat)
- case TARGET_NR_linkat:
- if (is_hostfd(arg1)) {
- return -TARGET_EBADF;
- } else {
- void * p2 = NULL;
- if (!arg2 || !arg4)
- return -TARGET_EFAULT;
- p = lock_user_string(arg2);
- p2 = lock_user_string(arg4);
- if (!p || !p2)
- ret = -TARGET_EFAULT;
- else
- ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
- unlock_user(p, arg2, 0);
- unlock_user(p2, arg4, 0);
- }
- return ret;
-#endif
#ifdef TARGET_NR_unlink
case TARGET_NR_unlink:
if (!(p = lock_user_string(arg1)))
@@ -12958,6 +12961,12 @@ static impl_fn * const syscall_table[] = {
#ifdef TARGET_NR_fork
[TARGET_NR_fork] = impl_fork,
#endif
+#ifdef TARGET_NR_link
+ [TARGET_NR_link] = impl_link,
+#endif
+#if defined(TARGET_NR_linkat)
+ [TARGET_NR_linkat] = impl_linkat,
+#endif
#if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
[TARGET_NR_name_to_handle_at] = impl_name_to_handle_at,
#endif
--
2.17.0
- Re: [Qemu-devel] [PATCH 09/33] linux-user: Set up infrastructure for table-izing syscalls, (continued)
- [Qemu-devel] [PATCH 10/33] linux-user: Split out brk, close, exit, read, write, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 02/33] linux-user: Relax single exit from "break", Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 11/33] linux-user: Split out execve, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 14/33] linux-user: Split out open_to_handle_at, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 15/33] linux-user: Split out creat, fork, waitid, waitpid, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 13/33] linux-user: Split out name_to_handle_at, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 16/33] linux-user: Split out link, linkat,
Richard Henderson <=
- [Qemu-devel] [PATCH 17/33] linux-user: Split out unlink, unlinkat, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 18/33] linux-user: Split out chdir, mknod, mknodat, time, chmod, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 19/33] linux-user: Remove all unimplemented entries, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 20/33] linux-user: Split out getpid, getxpid, lseek, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 21/33] linux-user: Split out mount, umount, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 22/33] linux-user: Split out alarm, pause, stime, utime, utimes, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 23/33] linux-user: Split out access, faccessat, futimesat, kill, nice, sync, syncfs, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 26/33] linux-user: Split out acct, pipe, pipe2, times, umount2, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 25/33] linux-user: Split out dup, mkdir, mkdirat, rmdir, Richard Henderson, 2018/06/01
- [Qemu-devel] [PATCH 24/33] linux-user: Split out rename, renameat, renameat2, Richard Henderson, 2018/06/01