Distinguish between ENOMEM (as representing a lack of internal memory

as allocated by malloc()) versus all other errors, in particular
ENOBUFS (representing a lack of external buffer space, e.g. in a
device's TX queue or a user buffer).

diff --git a/src/include/errno.h b/src/include/errno.h
index 43e2076..dc4e4c1 100644 (file)
--- a/src/include/errno.h
+++ b/src/include/errno.h
@@ -145,29 +145,29 @@
 #define ENFILE         EMFILE  /**< Too many open files in system */
 /** Cannot allocate memory */
 #define ENOMEM         PXENV_STATUS_OUT_OF_RESOURCES
-#define ENOBUFS                ENOMEM  /**< No buffer space available */
-#define ENODATA                0xe6    /**< No data available */
-#define ENODEV         0xe7    /**< No such device */
-#define ENOENT         0xe8    /**< No such file or directory */
-#define ENOEXEC                0xe9    /**< Exec format error */
+#define ENOBUFS                0xe6    /**< No buffer space available */
+#define ENODATA                0xe7    /**< No data available */
+#define ENODEV         0xe8    /**< No such device */
+#define ENOENT         0xe9    /**< No such file or directory */
+#define ENOEXEC                0xea    /**< Exec format error */
 #define ENOMSG         ENODATA /**< No message of the desired type */
-#define ENOSPC         0xea    /**< No space left on device */
-#define ENOSR          0xeb    /**< No stream resources */
-#define ENOSTR         0xec    /**< Not a stream */
-#define ENOSYS         0xed    /**< Function not implemented */
-#define ENOTCONN       0xee    /**< Transport endpoint is not connected */
-#define ENOTSOCK       0xef    /**< Socket operation on non-socket */
-#define EOPNOTSUPP     0xf0    /**< Operation not supported */
+#define ENOSPC         0xeb    /**< No space left on device */
+#define ENOSR          0xec    /**< No stream resources */
+#define ENOSTR         0xed    /**< Not a stream */
+#define ENOSYS         0xee    /**< Function not implemented */
+#define ENOTCONN       0xef    /**< Transport endpoint is not connected */
+#define ENOTSOCK       0xf0    /**< Socket operation on non-socket */
+#define EOPNOTSUPP     0xf1    /**< Operation not supported */
 #define ENOTSUP                EOPNOTSUPP /**< Not supported */
-#define ENOTTY         0xf1    /**< Inappropriate ioctl for device */
+#define ENOTTY         0xf2    /**< Inappropriate ioctl for device */
 #define ENXIO          ENODEV  /**< No such device or address */
-#define EOVERFLOW      0xf2    /**< Result too large */
+#define EOVERFLOW      0xf3    /**< Result too large */
 #define EPERM          EACCES  /**< Operation not permitted */
-#define EPROTO         0xf3    /**< Protocol error */
-#define EPROTONOSUPPORT        0xf4    /**< Protocol not supported */
-#define EPROTOTYPE     0xf5    /**< Protocol wrong type for socket */
+#define EPROTO         0xf4    /**< Protocol error */
+#define EPROTONOSUPPORT        0xf5    /**< Protocol not supported */
+#define EPROTOTYPE     0xf6    /**< Protocol wrong type for socket */
 #define ERANGE         EOVERFLOW /**< Result too large */
-#define ETIMEDOUT      0xf6    /**< Connection timed out */
+#define ETIMEDOUT      0xf7    /**< Connection timed out */
 #define EWOULDBLOCK    EAGAIN  /**< Resource temporarily unavailable */
 
 extern int errno;