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/*
* support/export/rmtab.c
*
* Interface to the rmtab file.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "misc.h"
#include "nfslib.h"
#include "exportfs.h"
#include "xio.h"
#include "xlog.h"
/*
* See if the entry already exists. If not,
* this was an instantiated wild card, and we
* must add it.
*/
static void
rmtab_read_wildcard(struct rmtabent *rep)
{
nfs_export *exp, *exp2;
struct addrinfo *ai;
ai = host_addrinfo(rep->r_client);
if (ai == NULL)
return;
exp = export_allowed(ai, rep->r_path);
freeaddrinfo(ai);
if (exp == NULL)
return;
exp2 = export_lookup(rep->r_client, exp->m_export.e_path, 0);
if (exp2 == NULL) {
struct exportent ee;
memset(&ee, 0, sizeof(ee));
dupexportent(&ee, &exp->m_export);
ee.e_hostname = rep->r_client;
exp2 = export_create(&ee, 0);
exp2->m_changed = exp->m_changed;
}
exp2->m_mayexport = 1;
}
int
rmtab_read(void)
{
struct rmtabent *rep;
setrmtabent("r");
while ((rep = getrmtabent(1, NULL)) != NULL) {
int htype;
htype = client_gettype(rep->r_client);
if (htype == MCL_FQDN || htype == MCL_SUBNETWORK)
rmtab_read_wildcard(rep);
}
if (errno == EINVAL) {
/* Something goes wrong. We need to fix the rmtab
file. */
int lockid;
FILE *fp;
if ((lockid = xflock(_PATH_RMTABLCK, "w")) < 0)
return -1;
rewindrmtabent();
if (!(fp = fsetrmtabent(_PATH_RMTABTMP, "w"))) {
endrmtabent ();
xfunlock(lockid);
return -1;
}
while ((rep = getrmtabent(0, NULL)) != NULL) {
fputrmtabent(fp, rep, NULL);
}
if (rename(_PATH_RMTABTMP, _PATH_RMTAB) < 0) {
xlog(L_ERROR, "couldn't rename %s to %s",
_PATH_RMTABTMP, _PATH_RMTAB);
}
endrmtabent();
fendrmtabent(fp);
xfunlock(lockid);
}
else {
endrmtabent();
}
return 0;
}
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