diff mbox

[v3,5/5] linux-user: check fd is >= 0 in fd_trans_host_to_target_data/fd_trans_host_to_target_addr

Message ID 1446064846-12529-6-git-send-email-laurent@vivier.eu
State New
Headers show

Commit Message

Laurent Vivier Oct. 28, 2015, 8:40 p.m. UTC 
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 linux-user/syscall.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 22b28a4..eb45e72 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -309,7 +309,7 @@  static unsigned int target_fd_max;
 
 static TargetFdDataFunc fd_trans_host_to_target_data(int fd)
 {
-    if (fd < target_fd_max && target_fd_trans[fd]) {
+    if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
         return target_fd_trans[fd]->host_to_target_data;
     }
     return NULL;
@@ -317,7 +317,7 @@  static TargetFdDataFunc fd_trans_host_to_target_data(int fd)
 
 static TargetFdAddrFunc fd_trans_target_to_host_addr(int fd)
 {
-    if (fd < target_fd_max && target_fd_trans[fd]) {
+    if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
         return target_fd_trans[fd]->target_to_host_addr;
     }
     return NULL;