Fix: add stricter checks on packet boundaries

[babeltrace.git] / formats / ctf / types / string.c

diff --git a/formats/ctf/types/string.c b/formats/ctf/types/string.c
index a2433bf5922d2013e80f19a1e1897842657de535..3dd1414a0e078882160c7de6d28226d7a27b0973 100644 (file)
--- a/formats/ctf/types/string.c
+++ b/formats/ctf/types/string.c
@@ -42,7 +42,8 @@ int ctf_string_read(struct bt_stream_pos *ppos, struct bt_definition *definition
        ssize_t max_len;
        char *srcaddr;
 
-       ctf_align_pos(pos, string_declaration->p.alignment);
+       if (!ctf_align_pos(pos, string_declaration->p.alignment))
+               return -EFAULT;
 
        srcaddr = ctf_get_pos_addr(pos);
        if (pos->offset == EOF)
@@ -64,7 +65,8 @@ int ctf_string_read(struct bt_stream_pos *ppos, struct bt_definition *definition
        printf_debug("CTF string read %s\n", srcaddr);
        memcpy(string_definition->value, srcaddr, len);
        string_definition->len = len;
-       ctf_move_pos(pos, len * CHAR_BIT);
+       if (!ctf_move_pos(pos, len * CHAR_BIT))
+               return -EFAULT;
        return 0;
 }
 
@@ -79,7 +81,8 @@ int ctf_string_write(struct bt_stream_pos *ppos,
        size_t len;
        char *destaddr;
 
-       ctf_align_pos(pos, string_declaration->p.alignment);
+       if (!ctf_align_pos(pos, string_declaration->p.alignment))
+               return -EFAULT;
        assert(string_definition->value != NULL);
        len = string_definition->len;
 
@@ -91,6 +94,7 @@ int ctf_string_write(struct bt_stream_pos *ppos,
        destaddr = ctf_get_pos_addr(pos);
        memcpy(destaddr, string_definition->value, len);
 end:
-       ctf_move_pos(pos, len * CHAR_BIT);
+       if (!ctf_move_pos(pos, len * CHAR_BIT))
+               return -EFAULT;
        return 0;
 }