Re: [libvirt PATCH v4 14/31] qemu: move qemuProcessReadLog() to qemuLogContext

This code can be used by the nbdkit implementation for reading back filtered log data for error reporting. Move it to qemuLogContext so that it can be shared. Renamed to qemuLogContextReadFiltered(). Signed-off-by: Jonathon Jongsma <jjongsma(a)redhat.com&gt; --- src/qemu/qemu_logcontext.c | 65 ++++++++++++++++++++++++++++++++++++ src/qemu/qemu_logcontext.h | 3 ++ src/qemu/qemu_process.c | 67 +------------------------------------- 3 files changed, 69 insertions(+), 66 deletions(-) @@ -236,6 +237,70 @@ qemuLogContextRead(qemuLogContext *ctxt, } +/** + * qemuLogContextFilter: Read and filter log for relevant messages + * @ctxt: the domain log context + * @msg: pointer to buffer to store the read messages in + * @max: maximum length of the message returned in @msg after filtering + * + * Reads log output from @ctxt and filters it. Skips messages not produced by + * the target executable or irrelevant messages. If @max is not zero, @buf will + * contain at most @max characters from the end of the log and @buf will start + * after a new line if possible. + */ +int +qemuLogContextReadFiltered(qemuLogContext *ctxt, + char **msg, + size_t max)

+{ + char *buf; + char *eol; + char *filter_next; + size_t skip; + ssize_t got;

qemuLogContextGetWriteFD(qemuLogContext *ctxt) { diff --git a/src/qemu/qemu_logcontext.h b/src/qemu/qemu_logcontext.h index c6dbf3cb84..669a05ae97 100644 --- a/src/qemu/qemu_logcontext.h +++ b/src/qemu/qemu_logcontext.h @@ -32,6 +32,9 @@ int qemuLogContextWrite(qemuLogContext *ctxt, const char *fmt, ...) G_GNUC_PRINTF(2, 3); ssize_t qemuLogContextRead(qemuLogContext *ctxt, char **msg); +int qemuLogContextReadFiltered(qemuLogContext *ctxt, + char **msg, + size_t max);

int qemuLogContextGetWriteFD(qemuLogContext *ctxt); void qemuLogContextMarkPosition(qemuLogContext *ctxt);