[28324] in CVS-changelog-for-Kerberos-V5
krb5 commit: Add k5_buf_get_space
daemon@ATHENA.MIT.EDU (Greg Hudson)
Sat May 17 19:54:34 2014
Date: Sat, 17 May 2014 19:54:28 -0400
From: Greg Hudson <ghudson@mit.edu>
Message-Id: <201405172354.s4HNsSpw024996@drugstore.mit.edu>
To: cvs-krb5@mit.edu
Reply-To: krbdev@mit.edu
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https://github.com/krb5/krb5/commit/ccd989bdc2656b153bc226462e0c13800810ae04
commit ccd989bdc2656b153bc226462e0c13800810ae04
Author: Greg Hudson <ghudson@mit.edu>
Date: Sun May 4 15:43:35 2014 -0400
Add k5_buf_get_space
Add a new k5_buf method to make room in the buffer for the caller to
fill in.
src/include/k5-buf.h | 4 ++++
src/util/support/k5buf.c | 10 ++++++++++
src/util/support/libkrb5support-fixed.exports | 1 +
3 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/src/include/k5-buf.h b/src/include/k5-buf.h
index c5576a3..da10fd9 100644
--- a/src/include/k5-buf.h
+++ b/src/include/k5-buf.h
@@ -91,6 +91,10 @@ void k5_buf_add_fmt(struct k5buf *buf, const char *fmt, ...)
#endif
;
+/* Extend the length of buf by len and return a pointer to the reserved space,
+ * to be filled in by the caller. Return NULL on error. */
+void *k5_buf_get_space(struct k5buf *buf, size_t len);
+
/* Truncate BUF. LEN must be between 0 and the existing buffer
* length, or an assertion failure will result. */
void k5_buf_truncate(struct k5buf *buf, size_t len);
diff --git a/src/util/support/k5buf.c b/src/util/support/k5buf.c
index 778e68b..c3c81b0 100644
--- a/src/util/support/k5buf.c
+++ b/src/util/support/k5buf.c
@@ -191,6 +191,16 @@ k5_buf_add_fmt(struct k5buf *buf, const char *fmt, ...)
free(tmp);
}
+void *
+k5_buf_get_space(struct k5buf *buf, size_t len)
+{
+ if (!ensure_space(buf, len))
+ return NULL;
+ buf->len += len;
+ buf->data[buf->len] = '\0';
+ return &buf->data[buf->len - len];
+}
+
void
k5_buf_truncate(struct k5buf *buf, size_t len)
{
diff --git a/src/util/support/libkrb5support-fixed.exports b/src/util/support/libkrb5support-fixed.exports
index 2f38242..f5fbe9e 100644
--- a/src/util/support/libkrb5support-fixed.exports
+++ b/src/util/support/libkrb5support-fixed.exports
@@ -6,6 +6,7 @@ k5_buf_init_dynamic
k5_buf_add
k5_buf_add_len
k5_buf_add_fmt
+k5_buf_get_space
k5_buf_truncate
k5_buf_data
k5_buf_len
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