trace-cmd-record: Have read_file() NULL terminate the buffer

Add the '\0' string terminator to the buffer that read the file
to make it easier for users of read_file() to treat the read file
as a string and not worry about the size.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/trace-record.c b/trace-record.c
index c029257..e10e4d3 100644
--- a/trace-record.c
+++ b/trace-record.c
@@ -1697,15 +1697,16 @@ static char *read_file(char *file, int *psize)
                 if (r <= 0)
                         continue;
                 if (size) {
-                        buf = realloc(buf, size+r);
+                        buf = realloc(buf, size+r+1);
                         if (!buf)
                                 die("malloc");
                 } else
-                        buf = malloc_or_die(r);
+                        buf = malloc_or_die(r+1);
                 memcpy(buf+size, buffer, r);
                 size += r;
         } while (r);
 
+        buf[size] = '\0';
         *psize = size;
         return buf;
 }