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cbfstool: add bputs() to store a byte stream to a buffer 

There was already a bgets() function which operates on a buffer to
copy a byte stream. Provide bputs() to store a byte stream to a
buffer, thus making the API symmetrical.

Change-Id: I6166f6b68eacb822da38c9da61a3e44f4c67136d
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/5366
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Aaron Durbin 2014-03-10 14:13:27 -05:00 committed by Aaron Durbin
parent 01650045f4
commit 1240d29209
2 changed files with 10 additions and 2 deletions
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3
util/cbfstool/common.h
View File

@ -112,6 +112,7 @@ struct xdr {
/* xdr.c */ /* xdr.c */
extern struct xdr xdr_le, xdr_be; extern struct xdr xdr_le, xdr_be;
int bgets(struct buffer *input, void *output, size_t len); size_t bgets(struct buffer *input, void *output, size_t len);
size_t bputs(struct buffer *b, const void *data, size_t len);
#endif #endif

9
util/cbfstool/xdr.c
View File

@ -25,7 +25,7 @@
#include <stdint.h> #include <stdint.h>
#include "common.h" #include "common.h"
int bgets(struct buffer *input, void *output, size_t len) size_t bgets(struct buffer *input, void *output, size_t len)
{ {
len = input->size < len ? input->size : len; len = input->size < len ? input->size : len;
memmove(output, input->data, len); memmove(output, input->data, len);
@ -34,6 +34,13 @@ int bgets(struct buffer *input, void *output, size_t len)
return len; return len;
} }
size_t bputs(struct buffer *b, const void *data, size_t len)
{
memmove(&b->data[b->size], data, len);
b->size += len;
return len;
}
/* The assumption in all this code is that we're given a pointer to enough data. /* The assumption in all this code is that we're given a pointer to enough data.
* Hence, we do not check for underflow. * Hence, we do not check for underflow.
*/ */