osal Integration candidate: Caelum-rc4+dev37

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## Development Build: v6.0.0-rc4+dev184
+- separate append on volume_name to system_mountpt
+- See <https://github.com/nasa/osal/pull/1355>
+
 ## Development Build: v6.0.0-rc4+dev179
 - Remove obsolete _USING_RTEMS_INCLUDES_
 - Support adding default flags at task creation

src/os/inc/osapi-version.h

@@ -34,7 +34,7 @@
 /*
  * Development Build Macro Definitions
  */
-#define OS_BUILD_NUMBER 179
+#define OS_BUILD_NUMBER 183
 #define OS_BUILD_BASELINE "v6.0.0-rc4"
 
 /*

src/os/posix/src/os-impl-filesys.c

@@ -43,6 +43,7 @@
 #include "os-posix.h"
 #include "os-shared-filesys.h"
 #include "os-shared-idmap.h"
+#include "os-shared-common.h"
 
 /****************************************************************************************
  DEFINES
@@ -84,6 +85,8 @@ int32 OS_FileSysStartVolume_Impl(const OS_object_token_t *token)
  OS_filesys_internal_record_t *local;
  struct stat stat_buf;
  const char * tmpdir;
+ size_t mplen;
+ size_t vollen;
  uint32 i;
  enum
  {
@@ -168,7 +171,24 @@ int32 OS_FileSysStartVolume_Impl(const OS_object_token_t *token)
  return OS_FS_ERR_DRIVE_NOT_CREATED;
  }
 
- snprintf(local->system_mountpt, sizeof(local->system_mountpt), "%s/osal:%s", tmpdir, local->volume_name);
+ /*
+ * Note - performing the concatenation in a single snprintf() call seems
+ * to trigger a (false) pointer overlap warning, because volume_name should
+ * always be null terminated. To get around this, calculate the
+ * string size and check that it is within the expected size, and do the
+ * append of volume_name explicitly.
+ */
+ mplen = snprintf(local->system_mountpt, sizeof(local->system_mountpt), "%s/osal:", tmpdir);
+ if (mplen < sizeof(local->system_mountpt))
+ {
+ vollen = OS_strnlen(local->volume_name, sizeof(local->volume_name));
+ if ((vollen + mplen) >= sizeof(local->system_mountpt))
+ {
+ vollen = sizeof(local->system_mountpt) - mplen - 1;
+ }
+ memcpy(&local->system_mountpt[mplen], local->volume_name, vollen);
+ local->system_mountpt[mplen + vollen] = 0;
+ }
  }
 
  return OS_SUCCESS;