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autofs-5.1.1 - log pipe read errors
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From: Ian Kent <raven@themaw.net>
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Log any unexpected pipe read (possible error) returns.
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Signed-off-by: Ian Kent <raven@themaw.net>
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---
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CHANGELOG | 1 +
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daemon/automount.c | 24 ++++++++++++++++++++----
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2 files changed, 21 insertions(+), 4 deletions(-)
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--- autofs-5.0.7.orig/CHANGELOG
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+++ autofs-5.0.7/CHANGELOG
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@@ -187,6 +187,7 @@
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- gaurd against incorrect umount return.
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- fix typo in autofs.conf.
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- always set direct mounts catatonic at exit.
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+- log pipe read errors.
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25/07/2012 autofs-5.0.7
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=======================
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--- autofs-5.0.7.orig/daemon/automount.c
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+++ autofs-5.0.7/daemon/automount.c
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@@ -968,6 +968,8 @@ static int get_pkt(struct autofs_point *
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struct pollfd fds[3];
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int pollfds = 3;
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char buf[MAX_ERR_BUF];
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+ size_t read;
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+ char *estr;
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fds[0].fd = ap->pipefd;
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fds[0].events = POLLIN;
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@@ -980,7 +982,6 @@ static int get_pkt(struct autofs_point *
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for (;;) {
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if (poll(fds, pollfds, -1) == -1) {
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- char *estr;
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if (errno == EINTR)
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continue;
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estr = strerror_r(errno, buf, MAX_ERR_BUF);
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@@ -999,7 +1000,13 @@ static int get_pkt(struct autofs_point *
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state_pipe = ap->state_pipe[0];
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- if (fullread(state_pipe, &next_state, read_size)) {
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+ read = fullread(state_pipe, &next_state, read_size);
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+ if (read) {
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+ estr = strerror_r(errno, buf, MAX_ERR_BUF);
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+ error(ap->logopt,
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+ "read error on state pipe, "
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+ "read %u, error %s",
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+ read, estr);
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st_mutex_unlock();
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continue;
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}
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@@ -1010,8 +1017,17 @@ static int get_pkt(struct autofs_point *
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return -1;
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}
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- if (fds[0].revents & POLLIN)
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- return fullread(ap->pipefd, pkt, kpkt_len);
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+ if (fds[0].revents & POLLIN) {
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+ read = fullread(ap->pipefd, pkt, kpkt_len);
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+ if (read) {
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+ estr = strerror_r(errno, buf, MAX_ERR_BUF);
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+ error(ap->logopt,
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+ "read error on request pipe, "
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+ "read %u, expected %u error %s",
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+ read, kpkt_len, estr);
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+ }
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+ return read;
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+ }
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if (fds[2].fd != -1 && fds[2].revents & POLLIN) {
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debug(ap->logopt, "message pending on control fifo.");
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