/*
* Handle "background" NFS mount [retry daemon]
*
* Returns a valid mount command exit code: EX_SUCCESS if successful,
* EX_FAIL if a failure occurred. There's nothing to catch the
* error return, though, so we use sys_mount_errors to log the
* failure.
*/
static int nfsmount_child(struct nfsmount_info *mi)
{
unsigned int secs = 1;
time_t timeout;
timeout = nfs_parse_retry_option(mi->options,
NFS_DEF_BG_TIMEOUT_MINUTES);
for (;;) {
if (sleep(secs))
break;
secs <<= 1;
if (secs > 120)
secs = 120;
if (nfs_try_mount(mi))
return EX_SUCCESS;
/* retry background mounts when the server is not up */
if (nfs_is_permanent_error(errno) && errno != EOPNOTSUPP)
break;
if (time(NULL) > timeout)
break;
sys_mount_errors(mi->hostname, errno, 1, 1);
};
sys_mount_errors(mi->hostname, errno, 1, 0);
return EX_FAIL;
}
/*
* Handle "foreground" NFS mounts.
*
* Retry the mount request for as long as the 'retry=' option says.
*
* Returns a valid mount command exit code.
*/
static int nfsmount_fg(struct nfsmount_info *mi)
{
unsigned int secs = 1;
time_t timeout;
timeout = nfs_parse_retry_option(mi->options,
NFS_DEF_FG_TIMEOUT_MINUTES);
if (verbose)
printf(_("%s: timeout set for %s"),
progname, ctime(&timeout));
for (;;) {
if (nfs_try_mount(mi))
return EX_SUCCESS;
if (nfs_is_permanent_error(errno))
break;
if (time(NULL) > timeout) {
errno = ETIMEDOUT;
break;
}
if (errno != ETIMEDOUT) {
if (sleep(secs))
break;
secs <<= 1;
if (secs > 10)
secs = 10;
}
};
mount_error(mi->spec, mi->node, errno);
return EX_FAIL;
}
/*
* Handle "background" NFS mount [first try]
*
* Returns a valid mount command exit code.
*
* EX_BG should cause the caller to fork and invoke nfsmount_child.
*/
static int nfsmount_parent(struct nfsmount_info *mi)
{
if (nfs_try_mount(mi))
return EX_SUCCESS;
if (nfs_is_permanent_error(errno)) {
mount_error(mi->spec, mi->node, errno);
return EX_FAIL;
}
sys_mount_errors(mi->hostname, errno, 1, 1);
return EX_BG;
}
/*
* Handle "background" NFS mount [first try]
*
* Returns a valid mount command exit code.
*
* EX_BG should cause the caller to fork and invoke nfsmount_child.
*/
static int nfsmount_parent(struct nfsmount_info *mi)
{
if (nfs_try_mount(mi))
return EX_SUCCESS;
/* retry background mounts when the server is not up */
if (nfs_is_permanent_error(errno) && errno != EOPNOTSUPP) {
mount_error(mi->spec, mi->node, errno);
return EX_FAIL;
}
sys_mount_errors(mi->hostname, errno, 1, 1);
return EX_BG;
}
