update copyright date to 2013

[dpdk.git] / lib / librte_cmdline / cmdline.c

diff --git a/lib/librte_cmdline/cmdline.c b/lib/librte_cmdline/cmdline.c
index 6a0facf..9482851 100644 (file)
--- a/lib/librte_cmdline/cmdline.c
+++ b/lib/librte_cmdline/cmdline.c
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  * 
- *   Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
  *   All rights reserved.
  * 
  *   Redistribution and use in source and binary forms, with or without 
@@ -104,7 +104,12 @@ int
 cmdline_write_char(struct rdline *rdl, char c)
 {
        int ret = -1;
-       struct cmdline *cl = rdl->opaque;
+       struct cmdline *cl;
+
+       if (!rdl)
+               return -1;
+
+       cl = rdl->opaque;
 
        if (cl->s_out >= 0)
                ret = write(cl->s_out, &c, 1);
@@ -116,6 +121,8 @@ cmdline_write_char(struct rdline *rdl, char c)
 void
 cmdline_set_prompt(struct cmdline *cl, const char *prompt)
 {
+       if (!cl || !prompt)
+               return;
        rte_snprintf(cl->prompt, sizeof(cl->prompt), "%s", prompt);
 }
 
@@ -123,6 +130,10 @@ struct cmdline *
 cmdline_new(cmdline_parse_ctx_t *ctx, const char *prompt, int s_in, int s_out)
 {
        struct cmdline *cl;
+
+       if (!ctx || !prompt)
+               return NULL;
+
        cl = malloc(sizeof(struct cmdline));
        if (cl == NULL)
                return NULL;
@@ -144,6 +155,10 @@ void
 cmdline_free(struct cmdline *cl)
 {
        dprintf("called\n");
+
+       if (!cl)
+               return;
+
        if (cl->s_in > 2)
                close(cl->s_in);
        if (cl->s_out != cl->s_in && cl->s_out > 2)
@@ -156,6 +171,9 @@ cmdline_printf(const struct cmdline *cl, const char *fmt, ...)
 {
        va_list ap;
 
+       if (!cl || !fmt)
+               return;
+
 #ifdef _GNU_SOURCE
        if (cl->s_out < 0)
                return;
@@ -192,6 +210,9 @@ cmdline_in(struct cmdline *cl, const char *buf, int size)
        int ret = 0;
        int i, same;
 
+       if (!cl || !buf)
+               return -1;
+
        for (i=0; i<size; i++) {
                ret = rdline_char_in(&cl->rdl, buf[i]);
 
@@ -221,6 +242,8 @@ cmdline_in(struct cmdline *cl, const char *buf, int size)
 void
 cmdline_quit(struct cmdline *cl)
 {
+       if (!cl)
+               return;
        rdline_quit(&cl->rdl);
 }
 
@@ -229,6 +252,9 @@ cmdline_interact(struct cmdline *cl)
 {
        char c;
 
+       if (!cl)
+               return;
+
        c = -1;
        while (1) {
                if (read(cl->s_in, &c, 1) < 0)