160 lines
3.7 KiB
C
160 lines
3.7 KiB
C
/*
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** This file contains information about specific mount points that this
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** server maintains. Each nsswitch.conf file corresponds to a mount point.
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** The top 32 bits of a filehandle correspond to the file system ID.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <errno.h>
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#include <ns_api.h>
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#include <ns_daemon.h>
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#include "nfs.h"
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nsd_file_t *__nsd_mounts = 0;
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extern nsd_attr_t *__nsd_attrs;
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extern long nsd_timeout;
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void
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nsd_mount_clear(void)
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{
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if (__nsd_mounts) {
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nsd_timeout_remove(__nsd_mounts);
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nsd_file_clear(&__nsd_mounts);
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}
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}
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int
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nsd_mount_timeout(nsd_file_t **rqp, nsd_times_t *to)
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{
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nsd_file_t *top;
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*rqp = top = to->t_file;
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/*
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** Remove this timeout.
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*/
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nsd_timeout_remove(top);
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/*
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** Call the shake routine with a very low priority. This has the
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** effect of running timeout of the filesystem tree with the current
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** time, and calling all the library timeout routines to throw away
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** low priority caches.
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*/
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nsd_shake(0);
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/*
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** Reinstall the timeout for the next interval.
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*/
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if (top) {
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nsd_timeout_new(top, nsd_timeout, nsd_mount_timeout,
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(void *)0);
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}
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return NSD_CONTINUE;
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}
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/*
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** The init routine will read each of the nsswitch.conf files creating
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** a new tree. When successful we attach the tree to our directory
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** tree, removing the old structures. All filesystems are stored in
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** a root directory.
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*/
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int
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nsd_mount_init(void)
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{
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char buf[MAXPATHLEN];
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nsd_file_t *top, *domain;
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DIR *dp;
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struct direct *de;
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/*
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** Build a directory to hold all the mount points.
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*/
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if (nsd_file_init(&top, ".top", 4, (nsd_file_t *)0, NFDIR, 0) !=
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NSD_OK) {
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return NSD_ERROR;
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}
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nsd_attr_continue(&top->f_attrs, __nsd_attrs);
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top->f_mode = 0755;
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/*
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** Always setup default domain ".local".
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*/
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if (nsd_file_init(&domain, ".local", 6, top, NFDIR, 0) != NSD_OK) {
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free(top);
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return NSD_ERROR;
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}
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domain->f_mode = 0755;
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nsd_attr_store(&domain->f_attrs, "local", 0);
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nsd_logprintf(NSD_LOG_MIN, "Adding domain .local: %lld\n",
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FILEID(domain->f_fh));
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nsd_cat(buf, MAXPATHLEN, 2, "/etc/", NS_SWITCH_FILE);
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nsd_nsw_parse(domain, buf);
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nsd_nsw_default(domain); /* fill in defaults for missing maps */
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nsd_file_appenddir(top, domain, domain->f_name, domain->f_namelen);
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/*
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** Now we can release the old structure tree, and replace it with
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** the one we are building.
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*/
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nsd_mount_clear();
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top->f_nlink++;
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__nsd_mounts = top;
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nsd_timeout_new(top, nsd_timeout, nsd_mount_timeout, (void *)0);
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/*
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** Loop through all the domains for which there is a nsswitch.conf
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** file.
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*/
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dp = opendir(NS_DOMAINS_DIR);
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if (! dp) {
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nsd_logprintf(NSD_LOG_OPER,
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"nsd_mount_init: failed to open domain directory %s: %s\n",
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NS_DOMAINS_DIR, strerror(errno));
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return NSD_OK;
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}
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while (de = readdir(dp)) {
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if (de->d_name[0] == '.') {
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continue;
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}
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nsd_cat(buf, MAXPATHLEN, 4, NS_DOMAINS_DIR, de->d_name, "/",
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NS_SWITCH_FILE);
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if (access(buf, R_OK) == 0) {
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if (nsd_file_init(&domain, de->d_name,
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strlen(de->d_name), top, NFDIR, 0) != NSD_OK) {
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nsd_logprintf(NSD_LOG_RESOURCE,
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"malloc failed\n");
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return NSD_ERROR;
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}
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domain->f_mode = 0755;
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nsd_attr_store(&domain->f_attrs, "domain", de->d_name);
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if (nsd_nsw_parse(domain, buf) != NSD_OK) {
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nsd_file_clear(&domain);
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continue;
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}
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if (nsd_file_appenddir(top, domain, domain->f_name,
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domain->f_namelen) != NSD_OK) {
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nsd_logprintf(NSD_LOG_RESOURCE,
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"domain %s already exists\n",
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domain->f_name);
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nsd_file_clear(&domain);
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} else {
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nsd_logprintf(NSD_LOG_MIN,
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"Adding domain %s: %lld\n",
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domain->f_name, FILEID(domain->f_fh));
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}
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}
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}
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closedir(dp);
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return NSD_OK;
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}
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