Add system calls for gethostname and sethostname

include/sys/syscall.h

@@ -406,24 +406,34 @@
 #  define __SYS_network                __SYS_environ
 #endif
 
+/* The following are defined if networking is supported */
+
+#ifdef CONFIG_NET
+#  define SYS_gethostname              (__SYS_network+0)
+#  define SYS_sethostname              (__SYS_network+1)
+
 /* The following are defined only if networking AND sockets are supported */
 
-#if CONFIG_NSOCKET_DESCRIPTORS > 0 && defined(CONFIG_NET)
-#  define SYS_accept                   (__SYS_network+0)
-#  define SYS_bind                     (__SYS_network+1)
-#  define SYS_connect                  (__SYS_network+2)
-#  define SYS_getsockopt               (__SYS_network+3)
-#  define SYS_listen                   (__SYS_network+4)
-#  define SYS_recv                     (__SYS_network+5)
-#  define SYS_recvfrom                 (__SYS_network+6)
-#  define SYS_send                     (__SYS_network+7)
-#  define SYS_sendto                   (__SYS_network+8)
-#  define SYS_setsockopt               (__SYS_network+9)
-#  define SYS_socket                   (__SYS_network+10)
-#  define SYS_nnetsocket               (__SYS_network+11)
+#if CONFIG_NSOCKET_DESCRIPTORS > 0
+#  define SYS_accept                   (__SYS_network+2)
+#  define SYS_bind                     (__SYS_network+3)
+#  define SYS_connect                  (__SYS_network+4)
+#  define SYS_getsockopt               (__SYS_network+5)
+#  define SYS_listen                   (__SYS_network+6)
+#  define SYS_recv                     (__SYS_network+7)
+#  define SYS_recvfrom                 (__SYS_network+8)
+#  define SYS_send                     (__SYS_network+9)
+#  define SYS_sendto                   (__SYS_network+10)
+#  define SYS_setsockopt               (__SYS_network+11)
+#  define SYS_socket                   (__SYS_network+12)
+#  define SYS_nnetsocket               (__SYS_network+13)
+#else
+#  define SYS_nnetsocket               (__SYS_network+2)
+#endif
+
 #else
 #  define SYS_nnetsocket               __SYS_network
-#endif
+#endif /* CONFIG_NET */
 
 /* The following is defined only if CONFIG_TASK_NAME_SIZE > 0 */
 

syscall/syscall.csv

@@ -25,6 +25,7 @@
 "fsync","unistd.h","CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT)","int","int"
 "get_errno","errno.h","","int"
 "getenv","stdlib.h","!defined(CONFIG_DISABLE_ENVIRON)","FAR char*","FAR const char*"
+"gethostname","unistd.h","defined(CONFIG_NET)","int","FAR char*","size_t"
 "getpid","unistd.h","","pid_t"
 "getsockopt","sys/socket.h","CONFIG_NSOCKET_DESCRIPTORS > 0 && defined(CONFIG_NET)","int","int","int","int","FAR void*","FAR socklen_t*"
 "ioctl","sys/ioctl.h","!defined(CONFIG_LIBC_IOCTL_VARIADIC) && (CONFIG_NSOCKET_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0)","int","int","int","unsigned long"
@@ -120,7 +121,8 @@
 "sendfile","sys/sendfile.h","CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_NET_SENDFILE)","ssize_t","int","int","FAR off_t*","size_t"
 "sendto","sys/socket.h","CONFIG_NSOCKET_DESCRIPTORS > 0 && defined(CONFIG_NET)","ssize_t","int","FAR const void*","size_t","int","FAR const struct sockaddr*","socklen_t"
 "set_errno","errno.h","","void","int"
-"setenv","stdlib.h","!defined(CONFIG_DISABLE_ENVIRON)","int","const char*","const char*","int"
+"setenv","stdlib.h","!defined(CONFIG_DISABLE_ENVIRON)","int","FAR const char*","FAR const char*","int"
+"sethostname","unistd.h","defined(CONFIG_NET)","int","FAR const char*","size_t"
 "setsockopt","sys/socket.h","CONFIG_NSOCKET_DESCRIPTORS > 0 && defined(CONFIG_NET)","int","int","int","int","FAR const void*","socklen_t"
 "shmat", "sys/shm.h", "defined(CONFIG_MM_SHM)", "FAR void *", "int", "FAR const void *", "int"
 "shmctl", "sys/shm.h", "defined(CONFIG_MM_SHM)", "int", "int", "int", "FAR struct shmid_ds *"

syscall/syscall_lookup.h

@@ -298,9 +298,15 @@ SYSCALL_LOOKUP(up_assert,                 2, STUB_up_assert)
   SYSCALL_LOOKUP(unsetenv,                1, STUB_unsetenv)
 #endif
 
+/* The following are defined only if networking is supported */
+
+#ifdef CONFIG_NET
+  SYSCALL_LOOKUP(gethostname,             2, STUB_gethostname)
+  SYSCALL_LOOKUP(sethostname,             2, STUB_sethostname)
+
 /* The following are defined only if networking AND sockets are supported */
 
-#if CONFIG_NSOCKET_DESCRIPTORS > 0 && defined(CONFIG_NET)
+#if CONFIG_NSOCKET_DESCRIPTORS > 0
   SYSCALL_LOOKUP(accept,                  3, STUB_accept)
   SYSCALL_LOOKUP(bind,                    3, STUB_bind)
   SYSCALL_LOOKUP(connect,                 3, STUB_connect)
@@ -313,6 +319,7 @@ SYSCALL_LOOKUP(up_assert,                 2, STUB_up_assert)
   SYSCALL_LOOKUP(setsockopt,              5, STUB_setsockopt)
   SYSCALL_LOOKUP(socket,                  3, STUB_socket)
 #endif
+#endif /* CONFIG_NET */
 
 /* The following is defined only if CONFIG_TASK_NAME_SIZE > 0 */
 

syscall/syscall_stublookup.c

@@ -315,6 +315,11 @@ uintptr_t STUB_setenv(int nbr, uintptr_t parm1, uintptr_t parm2,
             uintptr_t parm3);
 uintptr_t STUB_unsetenv(int nbr, uintptr_t parm1);
 
+/* The following are defined only if networking is upported */
+
+uintptr_t STUB_gethostname(int nbr, uintptr_t parm1, uintptr_t parm2);
+uintptr_t STUB_sethostname(int nbr, uintptr_t parm1, uintptr_t parm2);
+
 /* The following are defined only if networking AND sockets are supported */
 
 uintptr_t STUB_accept(int nbr, uintptr_t parm1, uintptr_t parm2,

tools/README.txt

@@ -611,6 +611,11 @@ testbuild.sh
   configuration names depends on the underlying architecture of the
   configured board.
 
+  NOTE: The environment variable APPSDIR should be set to the relative
+  path to the application directory when running this script like:
+
+    $ export APPSDIR=../apps
+
 zipme.sh
 --------