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-rw-r--r--erts/emulator/beam/io.c2
-rw-r--r--erts/emulator/drivers/common/inet_drv.c38
2 files changed, 23 insertions, 17 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 49cd0e5f53..f5a58f9dac 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -743,7 +743,7 @@ driver_create_port(ErlDrvPort creator_port_ix, /* Creating port */
return (ErlDrvTermData) -1; /* pid does not exist */
}
if ((port_num = get_free_port()) < 0) {
- errno = ENFILE;
+ errno = SYSTEM_LIMIT;
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
erts_smp_mtx_unlock(&erts_driver_list_lock);
return (ErlDrvTermData) -1;
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index eeaa4d24ea..7cee4cb928 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -553,6 +553,12 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n)
# define VALGRIND_MAKE_MEM_DEFINED(ptr,size)
#endif
+/*
+ Magic errno value used locally for return of {error, system_limit}
+ - the emulator definition of SYSTEM_LIMIT is not available here.
+*/
+#define INET_ERRNO_SYSTEM_LIMIT (15 << 8)
+
/*----------------------------------------------------------------------------
** Interface constants.
**
@@ -1645,6 +1651,17 @@ static struct erl_drv_entry dummy_sctp_driver_entry =
#endif
+/* return lowercase string form of errno value */
+static char *errno_str(int err)
+{
+ switch (err) {
+ case INET_ERRNO_SYSTEM_LIMIT:
+ return "system_limit";
+ default:
+ return erl_errno_id(err);
+ }
+}
+
/* general control reply function */
static ErlDrvSSizeT ctl_reply(int rep, char* buf, ErlDrvSizeT len,
char** rbuf, ErlDrvSizeT rsize)
@@ -1665,13 +1682,9 @@ static ErlDrvSSizeT ctl_reply(int rep, char* buf, ErlDrvSizeT len,
/* general control error reply function */
static ErlDrvSSizeT ctl_error(int err, char** rbuf, ErlDrvSizeT rsize)
{
- char response[256]; /* Response buffer. */
- char* s;
- char* t;
+ char* s = errno_str(err);
- for (s = erl_errno_id(err), t = response; *s; s++, t++)
- *t = tolower(*s);
- return ctl_reply(INET_REP_ERROR, response, t-response, rbuf, rsize);
+ return ctl_reply(INET_REP_ERROR, s, strlen(s), rbuf, rsize);
}
static ErlDrvSSizeT ctl_xerror(char* xerr, char** rbuf, ErlDrvSizeT rsize)
@@ -1683,14 +1696,7 @@ static ErlDrvSSizeT ctl_xerror(char* xerr, char** rbuf, ErlDrvSizeT rsize)
static ErlDrvTermData error_atom(int err)
{
- char errstr[256];
- char* s;
- char* t;
-
- for (s = erl_errno_id(err), t = errstr; *s; s++, t++)
- *t = tolower(*s);
- *t = '\0';
- return driver_mk_atom(errstr);
+ return driver_mk_atom(errno_str(err));
}
@@ -8050,7 +8056,7 @@ static ErlDrvData tcp_inet_start(ErlDrvPort port, char* args)
/* Copy a descriptor, by creating a new port with same settings
* as the descriptor desc.
- * return NULL on error (ENFILE no ports avail)
+ * return NULL on error (SYSTEM_LIMIT no ports avail)
*/
static tcp_descriptor* tcp_inet_copy(tcp_descriptor* desc,SOCKET s,
ErlDrvTermData owner, int* err)
@@ -8089,7 +8095,7 @@ static tcp_descriptor* tcp_inet_copy(tcp_descriptor* desc,SOCKET s,
/* The new port will be linked and connected to the original caller */
port = driver_create_port(port, owner, "tcp_inet", (ErlDrvData) copy_desc);
if ((long)port == -1) {
- *err = ENFILE;
+ *err = INET_ERRNO_SYSTEM_LIMIT;
FREE(copy_desc);
return NULL;
}