[dpdk-dev,v2,05/25] cmdline: add alignment constraint
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Commit Message
This prevents sigbus errors on architectures that cannot handle unexpected
unaligned accesses to the output buffer.
Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
lib/librte_cmdline/cmdline_parse.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
@@ -255,7 +255,10 @@ cmdline_parse(struct cmdline *cl, const char * buf)
unsigned int inst_num=0;
cmdline_parse_inst_t *inst;
const char *curbuf;
- char result_buf[CMDLINE_PARSE_RESULT_BUFSIZE];
+ union {
+ char buf[CMDLINE_PARSE_RESULT_BUFSIZE];
+ long double align; /* strong alignment constraint for buf */
+ } result;
cmdline_parse_token_hdr_t *dyn_tokens[CMDLINE_PARSE_DYNAMIC_TOKENS];
void (*f)(void *, struct cmdline *, void *) = NULL;
void *data = NULL;
@@ -318,7 +321,7 @@ cmdline_parse(struct cmdline *cl, const char * buf)
debug_printf("INST %d\n", inst_num);
/* fully parsed */
- tok = match_inst(inst, buf, 0, result_buf, sizeof(result_buf),
+ tok = match_inst(inst, buf, 0, result.buf, sizeof(result.buf),
&dyn_tokens);
if (tok > 0) /* we matched at least one token */
@@ -353,7 +356,7 @@ cmdline_parse(struct cmdline *cl, const char * buf)
/* call func */
if (f) {
- f(result_buf, cl, data);
+ f(result.buf, cl, data);
}
/* no match */