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MEDIUM: channel: make bi_avail() use channel_in_transit()

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This ensures that we rely on a sane computation for the buffer size.
This commit is contained in:
Willy Tarreau 2015-01-14 15:56:50 +01:00
parent fe57834955
commit 27bb0e14a8
1 changed files with 5 additions and 21 deletions
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26
include/proto/channel.h
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@ -311,28 +311,12 @@ static inline int buffer_max_len(const struct channel *chn)
*/ */
static inline int bi_avail(const struct channel *chn) static inline int bi_avail(const struct channel *chn)
{ {
int rem = chn->buf->size; int ret;
int rem2;
rem -= chn->buf->o; ret = buffer_max_len(chn) - chn->buf->i - chn->buf->o;
rem -= chn->buf->i; if (ret < 0)
if (!rem) ret = 0;
return rem; /* buffer already full */ return ret;
if (chn->to_forward >= chn->buf->i ||
(CHN_INFINITE_FORWARD < MAX_RANGE(typeof(chn->buf->i)) && // just there to ensure gcc
chn->to_forward == CHN_INFINITE_FORWARD)) // avoids the useless second
return rem; // test whenever possible
rem2 = rem - global.tune.maxrewrite;
rem2 += chn->buf->o;
rem2 += chn->to_forward;
if (rem > rem2)
rem = rem2;
if (rem > 0)
return rem;
return 0;
} }
/* Cut the "tail" of the channel's buffer, which means strip it to the length /* Cut the "tail" of the channel's buffer, which means strip it to the length