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iscsi: logging improvements for iscsi_scstd.c

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Logging improvements for iscsi_scstd.c print more information about failures.

Signed-off-by: David Butterfield <dab21774@gmail.com>



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@7113 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2017-04-13 23:16:57 +00:00
parent b71fa76b5b
commit bcb87d57ec
1 changed files with 7 additions and 1 deletions
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8
iscsi-scst/usr/iscsi_scstd.c
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@@ -509,8 +509,11 @@ again:
case IOSTATE_READ_BHS:
case IOSTATE_READ_AHS_DATA:
read_again:
errno = 0; /* for the log_debug() */
res = read(pollfd->fd, conn->buffer, conn->rwsize);
if (res <= 0) {
log_debug(1, "read(%u, %p, %u) returned %d, errno=%u",
pollfd->fd, conn->buffer, conn->rwsize, res, errno);
if (res == 0 || (errno != EINTR && errno != EAGAIN)) {
conn->state = STATE_DROP;
goto out;
@@ -577,6 +580,8 @@ again:
conn->cork_transmit(pollfd->fd);
res = write(pollfd->fd, conn->buffer, conn->rwsize);
if (res < 0) {
log_debug(1, "write(%u, %p, %u) returned %d, errno=%u",
pollfd->fd, conn->buffer, conn->rwsize, res, errno);
if (errno != EINTR && errno != EAGAIN) {
conn->state = STATE_DROP;
goto out;
@@ -747,7 +752,8 @@ static void event_loop(void)
(conn->state == STATE_DROP)) {
struct session *sess = conn->sess;
log_debug(1, "closing conn %p", conn);
log_debug(1, "closing conn %p state=0x%x fd=%u",
conn, conn->state, pollfd->fd);
conn_free_pdu(conn);
close(pollfd->fd);
pollfd->fd = -1;