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/* ----------------------------------------------------------------------- *
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*
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* lookup_sss.c - module for Linux automount to query sss service
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*
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* Copyright 2012 Ian Kent <raven@themaw.net>
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* Copyright 2012 Red Hat, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, Inc., 675 Mass Ave, Cambridge MA 02139,
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* USA; either version 2 of the License, or (at your option) any later
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* version; incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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#include <stdio.h>
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#include <malloc.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <dlfcn.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#define MODULE_LOOKUP
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#include "automount.h"
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#include "nsswitch.h"
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#define MAPFMT_DEFAULT "sun"
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/* Half a second between retries */
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#define SETAUTOMOUNTENT_MASTER_INTERVAL 500000000
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#define MODPREFIX "lookup(sss): "
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#define SSS_SO_NAME "libsss_autofs"
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int _sss_setautomntent(const char *, void **);
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int _sss_getautomntent_r(char **, char **, void *);
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int _sss_getautomntbyname_r(char *, char **, void *);
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int _sss_endautomntent(void **);
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typedef int (*setautomntent_t) (const char *, void **);
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typedef int (*getautomntent_t) (char **, char **, void *);
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typedef int (*getautomntbyname_t) (char *, char **, void *);
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typedef int (*endautomntent_t) (void **);
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struct lookup_context {
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const char *mapname;
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void *dlhandle;
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setautomntent_t setautomntent;
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getautomntent_t getautomntent_r;
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getautomntbyname_t getautomntbyname_r;
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endautomntent_t endautomntent;
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struct parse_mod *parse;
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};
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int lookup_version = AUTOFS_LOOKUP_VERSION; /* Required by protocol */
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static int open_sss_lib(struct lookup_context *ctxt)
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{
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char dlbuf[PATH_MAX];
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char *estr;
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void *dh;
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size_t size;
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size = snprintf(dlbuf, sizeof(dlbuf),
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"%s/%s.so", SSS_LIB_DIR, SSS_SO_NAME);
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if (size >= sizeof(dlbuf)) {
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logmsg(MODPREFIX "sss library path too long");
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return 1;
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}
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dh = dlopen(dlbuf, RTLD_LAZY);
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if (!dh)
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return 1;
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ctxt->dlhandle = dh;
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ctxt->setautomntent = (setautomntent_t) dlsym(dh, "_sss_setautomntent");
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if (!ctxt->setautomntent)
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goto lib_names_fail;
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ctxt->getautomntent_r = (getautomntent_t) dlsym(dh, "_sss_getautomntent_r");
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if (!ctxt->getautomntent_r)
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goto lib_names_fail;
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ctxt->getautomntbyname_r = (getautomntbyname_t) dlsym(dh, "_sss_getautomntbyname_r");
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if (!ctxt->getautomntbyname_r)
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goto lib_names_fail;
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ctxt->endautomntent = (endautomntent_t) dlsym(dh, "_sss_endautomntent");
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if (!ctxt->setautomntent)
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goto lib_names_fail;
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return 0;
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lib_names_fail:
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if ((estr = dlerror()) == NULL)
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logmsg(MODPREFIX "failed to locate sss library entry points");
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else
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logerr(MODPREFIX "dlsym: %s", estr);
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dlclose(dh);
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return 1;
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}
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static int do_init(const char *mapfmt,
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int argc, const char *const *argv,
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struct lookup_context *ctxt, unsigned int reinit)
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{
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int ret = 0;
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if (argc < 1) {
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logerr(MODPREFIX "No map name");
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ret = 1;
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goto out;
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}
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ctxt->mapname = argv[0];
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if (!mapfmt)
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mapfmt = MAPFMT_DEFAULT;
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if (!reinit) {
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ret = open_sss_lib(ctxt);
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if (ret)
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goto out;
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}
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if (reinit) {
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ret = reinit_parse(ctxt->parse, mapfmt, MODPREFIX, argc - 1, argv + 1);
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if (ret)
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logmsg(MODPREFIX "failed to reinit parse context");
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} else {
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ctxt->parse = open_parse(mapfmt, MODPREFIX, argc - 1, argv + 1);
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if (!ctxt->parse) {
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logmsg(MODPREFIX "failed to open parse context");
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dlclose(ctxt->dlhandle);
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ret = 1;
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}
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}
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out:
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return ret;
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}
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int lookup_init(const char *mapfmt,
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int argc, const char *const *argv, void **context)
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{
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struct lookup_context *ctxt;
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char buf[MAX_ERR_BUF];
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char *estr;
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*context = NULL;
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ctxt = malloc(sizeof(struct lookup_context));
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if (!ctxt) {
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estr = strerror_r(errno, buf, MAX_ERR_BUF);
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logerr(MODPREFIX "malloc: %s", estr);
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return 1;
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}
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if (do_init(mapfmt, argc, argv, ctxt, 0)) {
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free(ctxt);
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return 1;
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}
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*context = ctxt;
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return 0;
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}
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|
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int lookup_reinit(const char *mapfmt,
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int argc, const char *const *argv, void **context)
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{
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struct lookup_context *ctxt = (struct lookup_context *) *context;
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struct lookup_context *new;
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char buf[MAX_ERR_BUF];
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int ret;
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new = malloc(sizeof(struct lookup_context));
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if (!new) {
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char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
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logerr(MODPREFIX "malloc: %s", estr);
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return 1;
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}
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new->parse = ctxt->parse;
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ret = do_init(mapfmt, argc, argv, new, 1);
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8480eb |
if (ret) {
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Packit |
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free(new);
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return 1;
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8480eb |
}
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new->dlhandle = ctxt->dlhandle;
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new->setautomntent = ctxt->setautomntent;
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8480eb |
new->getautomntent_r = ctxt->getautomntent_r;
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8480eb |
new->getautomntbyname_r = ctxt->getautomntbyname_r;
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new->endautomntent = ctxt->endautomntent;
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|
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*context = new;
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8480eb |
|
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free(ctxt);
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8480eb |
|
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8480eb |
return 0;
|
|
Packit |
8480eb |
}
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8480eb |
|
|
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8480eb |
static int setautomntent(unsigned int logopt,
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struct lookup_context *ctxt, const char *mapname,
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Packit |
8480eb |
void **sss_ctxt)
|
|
Packit |
8480eb |
{
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|
Packit |
8480eb |
int ret = ctxt->setautomntent(mapname, sss_ctxt);
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Packit |
8480eb |
if (ret) {
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Packit |
8480eb |
char buf[MAX_ERR_BUF];
|
|
Packit |
8480eb |
char *estr = strerror_r(ret, buf, MAX_ERR_BUF);
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|
Packit |
8480eb |
error(logopt, MODPREFIX "setautomntent: %s", estr);
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|
Packit |
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if (*sss_ctxt)
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|
Packit |
8480eb |
free(*sss_ctxt);
|
|
Packit |
8480eb |
}
|
|
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8480eb |
return ret;
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|
Packit |
8480eb |
}
|
|
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8480eb |
|
|
Packit |
8480eb |
static int setautomntent_wait(unsigned int logopt,
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8480eb |
struct lookup_context *ctxt,
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Packit |
8480eb |
const char *mapname,
|
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Packit |
8480eb |
void **sss_ctxt, unsigned int retries)
|
|
Packit |
8480eb |
{
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|
Packit |
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unsigned int retry = 0;
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|
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8480eb |
int ret = 0;
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|
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*sss_ctxt = NULL;
|
|
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8480eb |
|
|
Packit |
8480eb |
while (++retry < retries) {
|
|
Packit |
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struct timespec t = { 0, SETAUTOMOUNTENT_MASTER_INTERVAL };
|
|
Packit |
8480eb |
struct timespec r;
|
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Packit |
8480eb |
|
|
Packit |
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ret = ctxt->setautomntent(mapname, sss_ctxt);
|
|
Packit |
8480eb |
if (ret != ENOENT)
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Packit |
8480eb |
break;
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Packit |
8480eb |
|
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Packit |
8480eb |
if (*sss_ctxt) {
|
|
Packit |
8480eb |
free(*sss_ctxt);
|
|
Packit |
8480eb |
*sss_ctxt = NULL;
|
|
Packit |
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}
|
|
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8480eb |
|
|
Packit |
8480eb |
while (nanosleep(&t, &r) == -1 && errno == EINTR)
|
|
Packit |
8480eb |
memcpy(&t, &r, sizeof(struct timespec));
|
|
Packit |
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}
|
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8480eb |
|
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8480eb |
|
|
Packit |
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if (ret) {
|
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Packit |
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char buf[MAX_ERR_BUF];
|
|
Packit |
8480eb |
char *estr;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
if (*sss_ctxt) {
|
|
Packit |
8480eb |
free(*sss_ctxt);
|
|
Packit |
8480eb |
*sss_ctxt = NULL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
if (retry == retries)
|
|
Packit |
8480eb |
ret = ETIMEDOUT;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
estr = strerror_r(ret, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(logopt, MODPREFIX "setautomntent: %s", estr);
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
return ret;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
static int endautomntent(unsigned int logopt,
|
|
Packit |
8480eb |
struct lookup_context *ctxt, void **sss_ctxt)
|
|
Packit |
8480eb |
{
|
|
Packit |
8480eb |
int ret = ctxt->endautomntent(sss_ctxt);
|
|
Packit |
8480eb |
if (ret) {
|
|
Packit |
8480eb |
char buf[MAX_ERR_BUF];
|
|
Packit |
8480eb |
char *estr = strerror_r(ret, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(logopt, MODPREFIX "endautomntent: %s", estr);
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
return ret;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
int lookup_read_master(struct master *master, time_t age, void *context)
|
|
Packit |
8480eb |
{
|
|
Packit |
8480eb |
struct lookup_context *ctxt = (struct lookup_context *) context;
|
|
Packit |
8480eb |
unsigned int timeout = master->default_timeout;
|
|
Packit |
8480eb |
unsigned int logging = master->default_logging;
|
|
Packit |
8480eb |
unsigned int logopt = master->logopt;
|
|
Packit |
8480eb |
void *sss_ctxt = NULL;
|
|
Packit |
8480eb |
char buf[MAX_ERR_BUF];
|
|
Packit |
8480eb |
char *buffer;
|
|
Packit |
8480eb |
size_t buffer_len;
|
|
Packit |
8480eb |
char *key;
|
|
Packit |
8480eb |
char *value = NULL;
|
|
Packit |
8480eb |
int count, ret;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
ret = setautomntent(logopt, ctxt, ctxt->mapname, &sss_ctxt);
|
|
Packit |
8480eb |
if (ret) {
|
|
Packit |
8480eb |
unsigned int retries;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
if (ret != ENOENT)
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
retries = defaults_get_sss_master_map_wait() * 2;
|
|
Packit |
8480eb |
if (retries <= 0)
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
ret = setautomntent_wait(logopt,
|
|
Packit |
8480eb |
ctxt, ctxt->mapname, &sss_ctxt,
|
|
Packit |
8480eb |
retries);
|
|
Packit |
8480eb |
if (ret) {
|
|
Packit |
8480eb |
if (ret == ENOENT)
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
count = 0;
|
|
Packit |
8480eb |
while (1) {
|
|
Packit |
8480eb |
key = NULL;
|
|
Packit |
8480eb |
value = NULL;
|
|
Packit |
8480eb |
ret = ctxt->getautomntent_r(&key, &value, sss_ctxt);
|
|
Packit |
8480eb |
if (ret && ret != ENOENT) {
|
|
Packit |
8480eb |
char *estr = strerror_r(ret, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(logopt, MODPREFIX "getautomntent_r: %s", estr);
|
|
Packit |
8480eb |
endautomntent(logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
if (key)
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
if (value)
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
if (ret == ENOENT) {
|
|
Packit |
8480eb |
if (!count) {
|
|
Packit |
8480eb |
char *estr = strerror_r(ret, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(logopt, MODPREFIX "getautomntent_r: %s", estr);
|
|
Packit |
8480eb |
endautomntent(logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
if (key)
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
if (value)
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
break;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
count++;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
buffer_len = strlen(key) + 1 + strlen(value) + 2;
|
|
Packit |
8480eb |
buffer = malloc(buffer_len);
|
|
Packit |
8480eb |
if (!buffer) {
|
|
Packit |
8480eb |
char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(logopt, MODPREFIX "malloc: %s", estr);
|
|
Packit |
8480eb |
endautomntent(logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* TODO: implement sun % hack for key translation for
|
|
Packit |
8480eb |
* mixed case keys in schema that are single case only.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
strcpy(buffer, key);
|
|
Packit |
8480eb |
strcat(buffer, " ");
|
|
Packit |
8480eb |
strcat(buffer, value);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* TODO: handle cancelation. This almost certainly isn't
|
|
Packit |
8480eb |
* handled properly by other lookup modules either so it
|
|
Packit |
8480eb |
* should be done when cancelation is reviewed for the
|
|
Packit |
8480eb |
* other modules. Ditto for the other lookup module entry
|
|
Packit |
8480eb |
* points.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
master_parse_entry(buffer, timeout, logging, age);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
free(buffer);
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
endautomntent(logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
return NSS_STATUS_SUCCESS;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
int lookup_read_map(struct autofs_point *ap, time_t age, void *context)
|
|
Packit |
8480eb |
{
|
|
Packit |
8480eb |
struct lookup_context *ctxt = (struct lookup_context *) context;
|
|
Packit |
8480eb |
struct map_source *source;
|
|
Packit |
8480eb |
struct mapent_cache *mc;
|
|
Packit |
8480eb |
void *sss_ctxt = NULL;
|
|
Packit |
8480eb |
char buf[MAX_ERR_BUF];
|
|
Packit |
8480eb |
char *key;
|
|
Packit |
8480eb |
char *value = NULL;
|
|
Packit |
8480eb |
char *s_key;
|
|
Packit |
8480eb |
int count, ret;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
source = ap->entry->current;
|
|
Packit |
8480eb |
ap->entry->current = NULL;
|
|
Packit |
8480eb |
master_source_current_signal(ap->entry);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
mc = source->mc;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* If we don't need to create directories (or don't need
|
|
Packit |
8480eb |
* to read an amd cache:=all map) then there's no use
|
|
Packit |
8480eb |
* reading the map. We always need to read the whole map
|
|
Packit |
8480eb |
* for direct mounts in order to mount the triggers.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
if (ap->type != LKP_DIRECT &&
|
|
Packit |
8480eb |
!(ap->flags & (MOUNT_FLAG_GHOST|MOUNT_FLAG_AMD_CACHE_ALL))) {
|
|
Packit |
8480eb |
debug(ap->logopt, "map read not needed, so not done");
|
|
Packit |
8480eb |
return NSS_STATUS_SUCCESS;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
ret = setautomntent(ap->logopt, ctxt, ctxt->mapname, &sss_ctxt);
|
|
Packit |
8480eb |
if (ret) {
|
|
Packit |
8480eb |
if (ret == ENOENT)
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
count = 0;
|
|
Packit |
8480eb |
while (1) {
|
|
Packit |
8480eb |
key = NULL;
|
|
Packit |
8480eb |
value = NULL;
|
|
Packit |
8480eb |
ret = ctxt->getautomntent_r(&key, &value, sss_ctxt);
|
|
Packit |
8480eb |
if (ret && ret != ENOENT) {
|
|
Packit |
8480eb |
char *estr = strerror_r(ret, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(ap->logopt,
|
|
Packit |
8480eb |
MODPREFIX "getautomntent_r: %s", estr);
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
if (key)
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
if (value)
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
if (ret == ENOENT) {
|
|
Packit |
8480eb |
if (!count) {
|
|
Packit |
8480eb |
char *estr = strerror_r(ret, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(ap->logopt,
|
|
Packit |
8480eb |
MODPREFIX "getautomntent_r: %s", estr);
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
if (key)
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
if (value)
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
break;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* Ignore keys beginning with '+' as plus map
|
|
Packit |
8480eb |
* inclusion is only valid in file maps.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
if (*key == '+') {
|
|
Packit |
8480eb |
warn(ap->logopt,
|
|
Packit |
8480eb |
MODPREFIX "ignoring '+' map entry - not in file map");
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
continue;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
if (*key == '/' && strlen(key) == 1) {
|
|
Packit |
8480eb |
if (ap->type == LKP_DIRECT) {
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
continue;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
*key = '*';
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* TODO: implement sun % hack for key translation for
|
|
Packit |
8480eb |
* mixed case keys in schema that are single case only.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
s_key = sanitize_path(key, strlen(key), ap->type, ap->logopt);
|
|
Packit |
8480eb |
if (!s_key) {
|
|
Packit |
8480eb |
error(ap->logopt, MODPREFIX "invalid path %s", key);
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
count++;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
cache_writelock(mc);
|
|
Packit |
8480eb |
cache_update(mc, source, s_key, value, age);
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
free(s_key);
|
|
Packit |
8480eb |
free(key);
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
source->age = age;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
return NSS_STATUS_SUCCESS;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
static int lookup_one(struct autofs_point *ap,
|
|
Packit |
8480eb |
char *qKey, int qKey_len, struct lookup_context *ctxt)
|
|
Packit |
8480eb |
{
|
|
Packit |
8480eb |
struct map_source *source;
|
|
Packit |
8480eb |
struct mapent_cache *mc;
|
|
Packit |
8480eb |
struct mapent *we;
|
|
Packit |
8480eb |
void *sss_ctxt = NULL;
|
|
Packit |
8480eb |
time_t age = monotonic_time(NULL);
|
|
Packit |
8480eb |
char buf[MAX_ERR_BUF];
|
|
Packit |
8480eb |
char *value = NULL;
|
|
Packit |
8480eb |
char *s_key;
|
|
Packit |
8480eb |
int ret;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
source = ap->entry->current;
|
|
Packit |
8480eb |
ap->entry->current = NULL;
|
|
Packit |
8480eb |
master_source_current_signal(ap->entry);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
mc = source->mc;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
ret = setautomntent(ap->logopt, ctxt, ctxt->mapname, &sss_ctxt);
|
|
Packit |
8480eb |
if (ret) {
|
|
Packit |
8480eb |
if (ret == ENOENT)
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
ret = ctxt->getautomntbyname_r(qKey, &value, sss_ctxt);
|
|
Packit |
8480eb |
if (ret && ret != ENOENT) {
|
|
Packit |
8480eb |
char *estr = strerror_r(ret, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(ap->logopt,
|
|
Packit |
8480eb |
MODPREFIX "getautomntbyname_r: %s", estr);
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
if (value)
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
if (ret != ENOENT) {
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* TODO: implement sun % hack for key translation for
|
|
Packit |
8480eb |
* mixed case keys in schema that are single case only.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
s_key = sanitize_path(qKey, qKey_len, ap->type, ap->logopt);
|
|
Packit |
8480eb |
if (!s_key) {
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
value = NULL;
|
|
Packit |
8480eb |
goto wild;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
cache_writelock(mc);
|
|
Packit |
8480eb |
ret = cache_update(mc, source, s_key, value, age);
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
free(s_key);
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_SUCCESS;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
wild:
|
|
Packit |
8480eb |
ret = ctxt->getautomntbyname_r("/", &value, sss_ctxt);
|
|
Packit |
8480eb |
if (ret && ret != ENOENT) {
|
|
Packit |
8480eb |
char *estr = strerror_r(ret, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(ap->logopt,
|
|
Packit |
8480eb |
MODPREFIX "getautomntbyname_r: %s", estr);
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
if (value)
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
if (ret == ENOENT) {
|
|
Packit |
8480eb |
ret = ctxt->getautomntbyname_r("*", &value, sss_ctxt);
|
|
Packit |
8480eb |
if (ret && ret != ENOENT) {
|
|
Packit |
8480eb |
char *estr = strerror_r(ret, buf, MAX_ERR_BUF);
|
|
Packit |
8480eb |
error(ap->logopt,
|
|
Packit |
8480eb |
MODPREFIX "getautomntbyname_r: %s", estr);
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
if (value)
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
return NSS_STATUS_UNAVAIL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
if (ret == ENOENT) {
|
|
Packit |
8480eb |
/* Failed to find wild entry, update cache if needed */
|
|
Packit |
8480eb |
cache_writelock(mc);
|
|
Packit |
8480eb |
we = cache_lookup_distinct(mc, "*");
|
|
Packit |
8480eb |
if (we) {
|
|
Packit |
8480eb |
/* Wildcard entry existed and is now gone */
|
|
Packit |
8480eb |
if (we->source == source) {
|
|
Packit |
8480eb |
cache_delete(mc, "*");
|
|
Packit |
8480eb |
source->stale = 1;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/* Not found in the map but found in the cache */
|
|
Packit |
8480eb |
struct mapent *exists = cache_lookup_distinct(mc, qKey);
|
|
Packit |
8480eb |
if (exists && exists->source == source) {
|
|
Packit |
8480eb |
if (exists->mapent) {
|
|
Packit |
8480eb |
free(exists->mapent);
|
|
Packit |
8480eb |
exists->mapent = NULL;
|
|
Packit |
8480eb |
source->stale = 1;
|
|
Packit |
8480eb |
exists->status = 0;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
cache_writelock(mc);
|
|
Packit |
8480eb |
/* Wildcard not in map but now is */
|
|
Packit |
8480eb |
we = cache_lookup_distinct(mc, "*");
|
|
Packit |
8480eb |
if (!we)
|
|
Packit |
8480eb |
source->stale = 1;
|
|
Packit |
8480eb |
ret = cache_update(mc, source, "*", value, age);
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
endautomntent(ap->logopt, ctxt, &sss_ctxt);
|
|
Packit |
8480eb |
free(value);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
return NSS_STATUS_SUCCESS;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
static int check_map_indirect(struct autofs_point *ap,
|
|
Packit |
8480eb |
char *key, int key_len,
|
|
Packit |
8480eb |
struct lookup_context *ctxt)
|
|
Packit |
8480eb |
{
|
|
Packit |
8480eb |
struct map_source *source;
|
|
Packit |
8480eb |
struct mapent_cache *mc;
|
|
Packit |
8480eb |
struct mapent *me;
|
|
Packit |
8480eb |
time_t now = monotonic_time(NULL);
|
|
Packit |
8480eb |
time_t t_last_read;
|
|
Packit |
8480eb |
int ret, cur_state;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
source = ap->entry->current;
|
|
Packit |
8480eb |
ap->entry->current = NULL;
|
|
Packit |
8480eb |
master_source_current_signal(ap->entry);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
mc = source->mc;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
master_source_current_wait(ap->entry);
|
|
Packit |
8480eb |
ap->entry->current = source;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cur_state);
|
|
Packit |
8480eb |
ret = lookup_one(ap, key, key_len, ctxt);
|
|
Packit |
8480eb |
if (ret == NSS_STATUS_NOTFOUND) {
|
|
Packit |
8480eb |
pthread_setcancelstate(cur_state, NULL);
|
|
Packit |
8480eb |
return ret;
|
|
Packit |
8480eb |
} else if (ret == NSS_STATUS_UNAVAIL) {
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* If the server is down and the entry exists in the cache
|
|
Packit |
8480eb |
* and belongs to this map return success and use the entry.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
struct mapent *exists = cache_lookup(mc, key);
|
|
Packit |
8480eb |
if (exists && exists->source == source) {
|
|
Packit |
8480eb |
pthread_setcancelstate(cur_state, NULL);
|
|
Packit |
8480eb |
return NSS_STATUS_SUCCESS;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
pthread_setcancelstate(cur_state, NULL);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
warn(ap->logopt,
|
|
Packit |
8480eb |
MODPREFIX "lookup for %s failed: connection failed", key);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
return ret;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
pthread_setcancelstate(cur_state, NULL);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* Check for map change and update as needed for
|
|
Packit |
8480eb |
* following cache lookup.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
cache_readlock(mc);
|
|
Packit |
8480eb |
t_last_read = ap->exp_runfreq + 1;
|
|
Packit |
8480eb |
me = cache_lookup_first(mc);
|
|
Packit |
8480eb |
while (me) {
|
|
Packit |
8480eb |
if (me->source == source) {
|
|
Packit |
8480eb |
t_last_read = now - me->age;
|
|
Packit |
8480eb |
break;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
me = cache_lookup_next(mc, me);
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
if (t_last_read > ap->exp_runfreq && ret & CHE_UPDATED)
|
|
Packit |
8480eb |
source->stale = 1;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
cache_readlock(mc);
|
|
Packit |
8480eb |
me = cache_lookup_distinct(mc, "*");
|
|
Packit |
8480eb |
if (ret == CHE_MISSING && (!me || me->source != source)) {
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
return NSS_STATUS_SUCCESS;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *context)
|
|
Packit |
8480eb |
{
|
|
Packit |
8480eb |
struct lookup_context *ctxt = (struct lookup_context *) context;
|
|
Packit |
8480eb |
struct map_source *source;
|
|
Packit |
8480eb |
struct mapent_cache *mc;
|
|
Packit |
8480eb |
struct mapent *me;
|
|
Packit |
8480eb |
char key[KEY_MAX_LEN + 1];
|
|
Packit |
8480eb |
int key_len;
|
|
Packit |
8480eb |
char *mapent = NULL;
|
|
Packit |
8480eb |
char mapent_buf[MAPENT_MAX_LEN + 1];
|
|
Packit |
8480eb |
int ret;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
source = ap->entry->current;
|
|
Packit |
8480eb |
ap->entry->current = NULL;
|
|
Packit |
8480eb |
master_source_current_signal(ap->entry);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
mc = source->mc;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
debug(ap->logopt, MODPREFIX "looking up %s", name);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
key_len = snprintf(key, KEY_MAX_LEN + 1, "%s", name);
|
|
Packit |
8480eb |
if (key_len > KEY_MAX_LEN)
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/* Check if we recorded a mount fail for this key anywhere */
|
|
Packit |
8480eb |
me = lookup_source_mapent(ap, key, LKP_DISTINCT);
|
|
Packit |
8480eb |
if (me) {
|
|
Packit |
8480eb |
if (me->status >= monotonic_time(NULL)) {
|
|
Packit |
8480eb |
cache_unlock(me->mc);
|
|
Packit |
8480eb |
return NSS_STATUS_NOTFOUND;
|
|
Packit |
8480eb |
} else {
|
|
Packit |
8480eb |
struct mapent_cache *smc = me->mc;
|
|
Packit |
8480eb |
struct mapent *sme;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
if (me->mapent)
|
|
Packit |
8480eb |
cache_unlock(smc);
|
|
Packit |
8480eb |
else {
|
|
Packit |
8480eb |
cache_unlock(smc);
|
|
Packit |
8480eb |
cache_writelock(smc);
|
|
Packit |
8480eb |
sme = cache_lookup_distinct(smc, key);
|
|
Packit |
8480eb |
/* Negative timeout expired for non-existent entry. */
|
|
Packit |
8480eb |
if (sme && !sme->mapent) {
|
|
Packit |
8480eb |
if (cache_pop_mapent(sme) == CHE_FAIL)
|
|
Packit |
8480eb |
cache_delete(smc, key);
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
cache_unlock(smc);
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* We can't check the direct mount map as if it's not in
|
|
Packit |
8480eb |
* the map cache already we never get a mount lookup, so
|
|
Packit |
8480eb |
* we never know about it.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
if (ap->type == LKP_INDIRECT && *key != '/') {
|
|
Packit |
8480eb |
int status;
|
|
Packit |
8480eb |
char *lkp_key;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
cache_readlock(mc);
|
|
Packit |
8480eb |
me = cache_lookup_distinct(mc, key);
|
|
Packit |
8480eb |
if (me && me->multi)
|
|
Packit |
8480eb |
lkp_key = strdup(me->multi->key);
|
|
Packit |
8480eb |
else
|
|
Packit |
8480eb |
lkp_key = strdup(key);
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
if (!lkp_key)
|
|
Packit |
8480eb |
return NSS_STATUS_UNKNOWN;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
master_source_current_wait(ap->entry);
|
|
Packit |
8480eb |
ap->entry->current = source;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
status = check_map_indirect(ap, lkp_key, strlen(lkp_key), ctxt);
|
|
Packit |
8480eb |
free(lkp_key);
|
|
Packit |
8480eb |
if (status)
|
|
Packit |
8480eb |
return status;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* We can't take the writelock for direct mounts. If we're
|
|
Packit |
8480eb |
* starting up or trying to re-connect to an existing direct
|
|
Packit |
8480eb |
* mount we could be iterating through the map entries with
|
|
Packit |
8480eb |
* the readlock held. But we don't need to update the cache
|
|
Packit |
8480eb |
* when we're starting up so just take the readlock in that
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
if (ap->flags & MOUNT_FLAG_REMOUNT)
|
|
Packit Service |
42268b |
cache_readlock(mc);
|
|
Packit Service |
4a2c12 |
else
|
|
Packit Service |
4a2c12 |
cache_writelock(mc);
|
|
Packit |
8480eb |
me = cache_lookup(mc, key);
|
|
Packit |
8480eb |
/* Stale mapent => check for entry in alternate source or wildcard */
|
|
Packit |
8480eb |
if (me && !me->mapent) {
|
|
Packit |
8480eb |
while ((me = cache_lookup_key_next(me)))
|
|
Packit |
8480eb |
if (me->source == source)
|
|
Packit |
8480eb |
break;
|
|
Packit |
8480eb |
if (!me)
|
|
Packit |
8480eb |
me = cache_lookup_distinct(mc, "*");
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
if (me && me->mapent) {
|
|
Packit |
8480eb |
/*
|
|
Packit |
8480eb |
* If this is a lookup add wildcard match for later validation
|
|
Packit |
8480eb |
* checks and negative cache lookups.
|
|
Packit |
8480eb |
*/
|
|
Packit |
8480eb |
if (ap->type == LKP_INDIRECT && *me->key == '*' &&
|
|
Packit |
8480eb |
!(ap->flags & MOUNT_FLAG_REMOUNT)) {
|
|
Packit |
8480eb |
ret = cache_update(mc, source, key, me->mapent, me->age);
|
|
Packit |
8480eb |
if (!(ret & (CHE_OK | CHE_UPDATED)))
|
|
Packit |
8480eb |
me = NULL;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
if (me && (me->source == source || *me->key == '/')) {
|
|
Packit |
8480eb |
strcpy(mapent_buf, me->mapent);
|
|
Packit |
8480eb |
mapent = mapent_buf;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
if (!mapent)
|
|
Packit |
8480eb |
return NSS_STATUS_TRYAGAIN;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
master_source_current_wait(ap->entry);
|
|
Packit |
8480eb |
ap->entry->current = source;
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
debug(ap->logopt, MODPREFIX "%s -> %s", key, mapent);
|
|
Packit |
8480eb |
ret = ctxt->parse->parse_mount(ap, key, key_len,
|
|
Packit |
8480eb |
mapent, ctxt->parse->context);
|
|
Packit |
8480eb |
if (ret) {
|
|
Packit |
8480eb |
/* Don't update negative cache when re-connecting */
|
|
Packit |
8480eb |
if (ap->flags & MOUNT_FLAG_REMOUNT)
|
|
Packit |
8480eb |
return NSS_STATUS_TRYAGAIN;
|
|
Packit |
8480eb |
cache_writelock(mc);
|
|
Packit |
8480eb |
cache_update_negative(mc, source, key, ap->negative_timeout);
|
|
Packit |
8480eb |
cache_unlock(mc);
|
|
Packit |
8480eb |
return NSS_STATUS_TRYAGAIN;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
return NSS_STATUS_SUCCESS;
|
|
Packit |
8480eb |
}
|
|
Packit |
8480eb |
|
|
Packit |
8480eb |
int lookup_done(void *context)
|
|
Packit |
8480eb |
{
|
|
Packit |
8480eb |
struct lookup_context *ctxt = (struct lookup_context *) context;
|
|
Packit |
8480eb |
int rv = close_parse(ctxt->parse);
|
|
Packit |
8480eb |
dlclose(ctxt->dlhandle);
|
|
Packit |
8480eb |
free(ctxt);
|
|
Packit |
8480eb |
return rv;
|
|
Packit |
8480eb |
}
|