Alexandre Julliard : kernel32: Silence buffer overflow gcc warnings.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 741fe13d445d73293d54066ad4a9a9d9cbecb96a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=741fe13d445d73293d54066ad4a9a9d9cbecb96a

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Thu Aug 31 10:48:39 2017 +0200

kernel32: Silence buffer overflow gcc warnings.

Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/kernel32/oldconfig.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/dlls/kernel32/oldconfig.c b/dlls/kernel32/oldconfig.c
index 6c80dc6..219ecc5 100644
--- a/dlls/kernel32/oldconfig.c
+++ b/dlls/kernel32/oldconfig.c
@@ -290,7 +290,8 @@ static void create_hardware_branch(void)
         {
             if (strncmp(dent->d_name, "hd", 2) == 0)
             {
-                sprintf(cStr, procname_ide_media, dent->d_name);
+                if (snprintf(cStr, sizeof(cStr), procname_ide_media, dent->d_name) >= sizeof(cStr))
+                    continue;
                 procfile = fopen(cStr, "r");
                 if (!procfile)
                 {
@@ -306,7 +307,8 @@ static void create_hardware_branch(void)
                     if (nType == DRIVE_UNKNOWN) continue;
                 }
 
-                sprintf(cStr, procname_ide_model, dent->d_name);
+                if (snprintf(cStr, sizeof(cStr), procname_ide_model, dent->d_name) >= sizeof(cStr))
+                    continue;
                 procfile = fopen(cStr, "r");
                 if (!procfile)
                 {
@@ -322,7 +324,8 @@ static void create_hardware_branch(void)
                     cDevModel[strlen(cDevModel) - 1] = 0;
                 }
 
-                sprintf(cUnixDeviceName, "/dev/%s", dent->d_name);
+                if (snprintf(cUnixDeviceName, sizeof(cUnixDeviceName), "/dev/%s", dent->d_name) >= sizeof(cUnixDeviceName))
+                    continue;
                 scsi_addr.PortNumber = (dent->d_name[2] - 'a') / 2;
                 scsi_addr.PathId = 0;
                 scsi_addr.TargetId = (dent->d_name[2] - 'a') % 2;