[Tarantool-patches] [PATCH 11/12] popen: clarify popen_read_timeout error message
Alexander Turenko
alexander.turenko at tarantool.org
Wed Apr 15 07:21:36 MSK 2020
On Tue, Apr 14, 2020 at 02:38:20PM +0300, Alexander Turenko wrote:
> Popen backend errors should be meaningful for a user of the popen Lua
> API, because otherwise we'll need to map backend errors into Lua API
> errors. This particular failure can't appear when the function is called
> from the Lua API, but it is good to keep all error messages in one
> style.
>
> Part of #4031
> ---
> src/lib/core/popen.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/src/lib/core/popen.c b/src/lib/core/popen.c
> index 36cd7b07d..640dffc2b 100644
> --- a/src/lib/core/popen.c
> +++ b/src/lib/core/popen.c
> @@ -360,7 +360,7 @@ popen_write_timeout(struct popen_handle *handle, const void *buf,
> *
> * - IllegalParams: a parameter check fails:
> * - count: buffer is too big.
> - * - flags: POPEN_FLAG_FD_STD{OUT,ERR} are set or unset both.
> + * - flags: stdout and stdrr are both choosen or both missed
> * - handle: handle does not support the requested IO operation.
> * - SocketError: an IO error occurs at read().
> * - TimedOut: @a timeout quota is exceeded.
> @@ -379,8 +379,8 @@ popen_read_timeout(struct popen_handle *handle, void *buf,
> }
>
> if (!(flags & (POPEN_FLAG_FD_STDOUT | POPEN_FLAG_FD_STDERR))) {
> - diag_set(IllegalParams, "popen: POPEN_FLAG_FD_STD{OUT,ERR} are "
> - "unset both");
> + diag_set(IllegalParams,
> + "popen: neither stdout nor stderr is choosen");
> return -1;
> }
I was inattentive: there is an error message of the same style in
popen_read_timeout(). Those functions should be changed both together.
Incremental diff:
diff --git a/src/lib/core/popen.c b/src/lib/core/popen.c
index 640dffc2b..64711d737 100644
--- a/src/lib/core/popen.c
+++ b/src/lib/core/popen.c
@@ -297,7 +297,7 @@ stdX_str(unsigned int index)
*
* - IllegalParams: a parameter check fails:
* - count: data is too big.
- * - flags: POPEN_FLAG_FD_STDIN bit is unset.
+ * - flags: stdin is not choosen.
* - handle: handle does not support the requested IO operation.
* - SocketError: an IO error occurs at write().
* - TimedOut: @a timeout quota is exceeded.
@@ -322,8 +322,7 @@ popen_write_timeout(struct popen_handle *handle, const void *buf,
}
if (!(flags & POPEN_FLAG_FD_STDIN)) {
- diag_set(IllegalParams,
- "popen: POPEN_FLAG_FD_STDIN bit is unset");
+ diag_set(IllegalParams, "popen: stdin is not choosen");
return -1;
}
The new commit message:
| popen: refine popen_{read,write}_timeout errors
|
| Popen backend errors should be meaningful for a user of the popen Lua
| API, because otherwise we'll need to map backend errors into Lua API
| errors. Those particular failures can't appear when the functions are
| called from the Lua API, but it is good to keep all error messages in
| one style.
|
| Part of #4031
Don't sure, however, that 'choosen' is the right word in this context.
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