@@ -14,12 +14,20 @@
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <libgen.h>
#include "nfslib.h"
#include "exportfs.h"
#include "xio.h"
#include "xlog.h"
#include "v4root.h"
+#include "misc.h"
+
+static char state_base_dirname[PATH_MAX] = NFS_STATEDIR;
+extern struct state_paths etab;
int v4root_needed;
static void cond_rename(char *newfile, char *oldfile);
@@ -65,7 +73,7 @@ xtab_read(char *xtab, char *lockfn, int is_export)
int
xtab_export_read(void)
{
- return xtab_read(_PATH_ETAB, _PATH_ETABLCK, 1);
+ return xtab_read(etab.statefn, etab.lockfn, 1);
}
/*
@@ -112,7 +120,7 @@ xtab_write(char *xtab, char *xtabtmp, char *lockfn, int is_export)
int
xtab_export_write()
{
- return xtab_write(_PATH_ETAB, _PATH_ETABTMP, _PATH_ETABLCK, 1);
+ return xtab_write(etab.statefn, etab.tmpfn, etab.lockfn, 1);
}
/*
@@ -158,3 +166,73 @@ static void cond_rename(char *newfile, char *oldfile)
rename(newfile, oldfile);
return;
}
+
+/*
+ * Returns a dynamically allocated, '\0'-terminated buffer
+ * containing an appropriate pathname, or NULL if an error
+ * occurs. Caller must free the returned result with free(3).
+ */
+static char *
+state_make_pathname(const char *tabname)
+{
+ return generic_make_pathname(state_base_dirname, tabname);
+}
+
+/**
+ * state_setup_basedir - set up basedir
+ * @progname: C string containing name of program, for error messages
+ * @parentdir: C string containing pathname to on-disk state, or NULL
+ *
+ * This runs before logging is set up, so error messages are directed
+ * to stderr.
+ *
+ * Returns true and sets up our basedir, if @parentdir was valid
+ * and usable; otherwise false is returned.
+ */
+_Bool
+state_setup_basedir(const char *progname, const char *parentdir)
+{
+ return generic_setup_basedir(progname, parentdir, state_base_dirname);
+}
+
+int
+setup_state_path_names(const char *progname, const char *statefn,
+ const char *tmpfn, const char *lockfn,
+ struct state_paths *paths)
+{
+ paths->statefn = state_make_pathname(statefn);
+ if (!paths->statefn) {
+ fprintf(stderr, "%s: state_make_pathname(%s) failed\n",
+ progname, statefn);
+ goto out_err;
+ }
+ paths->tmpfn = state_make_pathname(tmpfn);
+ if (!paths->tmpfn) {
+ fprintf(stderr, "%s: state_make_pathname(%s) failed\n",
+ progname, tmpfn);
+ goto out_free_statefn;
+ }
+ paths->lockfn = state_make_pathname(lockfn);
+ if (!paths->lockfn) {
+ fprintf(stderr, "%s: state_make_pathname(%s) failed\n",
+ progname, lockfn);
+ goto out_free_tmpfn;
+ }
+ return 1;
+
+out_free_tmpfn:
+ free(paths->tmpfn);
+out_free_statefn:
+ free(paths->statefn);
+out_err:
+ return 0;
+
+}
+
+void
+free_state_path_names(struct state_paths *paths)
+{
+ free(paths->statefn);
+ free(paths->tmpfn);
+ free(paths->lockfn);
+}
@@ -58,6 +58,19 @@
#define _PATH_PROC_EXPORTS_ALT "/proc/fs/nfsd/exports"
#endif
+#define ETAB "etab"
+#define ETABTMP "etab.tmp"
+#define ETABLCK ".etab.lock"
+#define RMTAB "rmtab"
+#define RMTABTMP "rmtab.tmp"
+#define RMTABLCK ".rmtab.lock"
+
+struct state_paths {
+ char *statefn;
+ char *tmpfn;
+ char *lockfn;
+};
+
/* Maximum number of security flavors on an export: */
#define SECFLAVOR_COUNT 8
@@ -120,6 +133,10 @@ void fputrmtabent(FILE *fp, struct rmtabent *xep, long *pos);
void fendrmtabent(FILE *fp);
void frewindrmtabent(FILE *fp);
+_Bool state_setup_basedir(const char *, const char *);
+int setup_state_path_names(const char *, const char *, const char *, const char *, struct state_paths *);
+void free_state_path_names(struct state_paths *);
+
/* mydaemon */
void daemon_init(bool fg);
void daemon_ready(void);
@@ -27,6 +27,8 @@
#include <time.h>
#include <errno.h>
+extern struct state_paths etab;
+
void qword_add(char **bpp, int *lp, char *str)
{
char *bp = *bpp;
@@ -228,7 +230,7 @@ cache_flush(int force)
};
now = time(0);
if (force ||
- stat(_PATH_ETAB, &stb) != 0 ||
+ stat(etab.statefn, &stb) != 0 ||
stb.st_mtime > now)
stb.st_mtime = time(0);
@@ -33,12 +33,14 @@
static FILE *rmfp = NULL;
+extern struct state_paths rmtab;
+
int
setrmtabent(char *type)
{
if (rmfp)
fclose(rmfp);
- rmfp = fsetrmtabent(_PATH_RMTAB, type);
+ rmfp = fsetrmtabent(rmtab.statefn, type);
return (rmfp != NULL);
}
@@ -52,6 +52,8 @@ static const char *lockfile = EXP_LOCKFILE;
static int _lockfd = -1;
char *conf_path = NFS_CONFFILE;
+struct state_paths etab;
+
/*
* If we aren't careful, changes made by exportfs can be lost
* when multiple exports process run at once:
@@ -95,6 +97,7 @@ main(int argc, char **argv)
int f_ignore = 0;
int i, c;
int force_flush = 0;
+ char *s;
if ((progname = strrchr(argv[0], '/')) != NULL)
progname++;
@@ -108,6 +111,11 @@ main(int argc, char **argv)
conf_init();
xlog_from_conffile("exportfs");
+ /* NOTE: following uses "mountd" section of nfs.conf !!!! */
+ s = conf_get_str("mountd", "state-directory-path");
+ if (s && !state_setup_basedir(argv[0], s))
+ exit(1);
+
while ((c = getopt(argc, argv, "ad:fhio:ruvs")) != EOF) {
switch(c) {
case 'a':
@@ -159,13 +167,17 @@ main(int argc, char **argv)
xlog(L_ERROR, "-r and -u are incompatible");
return 1;
}
+ if (!setup_state_path_names(progname, ETAB, ETABTMP, ETABLCK, &etab))
+ return 1;
if (optind == argc && ! f_all) {
if (force_flush) {
cache_flush(1);
+ free_state_path_names(&etab);
return 0;
} else {
xtab_export_read();
dump(f_verbose, f_export_format);
+ free_state_path_names(&etab);
return 0;
}
}
@@ -206,6 +218,7 @@ main(int argc, char **argv)
}
xtab_export_write();
cache_flush(force_flush);
+ free_state_path_names(&etab);
return export_errno;
}
@@ -41,6 +41,8 @@ static nfs_client my_client;
extern int use_ipaddr;
+extern struct state_paths etab;
+
void
auth_init(void)
{
@@ -84,10 +86,10 @@ auth_reload()
static unsigned int counter;
int fd;
- if ((fd = open(_PATH_ETAB, O_RDONLY)) < 0) {
- xlog(L_FATAL, "couldn't open %s", _PATH_ETAB);
+ if ((fd = open(etab.statefn, O_RDONLY)) < 0) {
+ xlog(L_FATAL, "couldn't open %s", etab.statefn);
} else if (fstat(fd, &stb) < 0) {
- xlog(L_FATAL, "couldn't stat %s", _PATH_ETAB);
+ xlog(L_FATAL, "couldn't stat %s", etab.statefn);
close(fd);
} else if (last_fd != -1 && stb.st_ino == last_inode) {
/* We opened the etab file before, and its inode
@@ -29,6 +29,7 @@
#include "mountd.h"
#include "rpcmisc.h"
#include "pseudoflavors.h"
+#include "nfslib.h"
extern void my_svc_run(void);
@@ -40,6 +41,9 @@ int reverse_resolve = 0;
int manage_gids;
int use_ipaddr = -1;
+struct state_paths etab;
+struct state_paths rmtab;
+
char *conf_path = NFS_CONFFILE;
/* PRC: a high-availability callout program can be specified with -H
@@ -110,8 +114,8 @@ unregister_services (void)
static void
cleanup_lockfiles (void)
{
- unlink(_PATH_ETABLCK);
- unlink(_PATH_RMTABLCK);
+ unlink(etab.lockfn);
+ unlink(rmtab.lockfn);
}
/* Wait for all worker child processes to exit and reap them */
@@ -181,6 +185,8 @@ fork_workers(void)
wait_for_workers();
unregister_services();
cleanup_lockfiles();
+ free_state_path_names(&etab);
+ free_state_path_names(&rmtab);
xlog(L_NOTICE, "mountd: no more workers, exiting\n");
exit(0);
}
@@ -198,6 +204,8 @@ killer (int sig)
wait_for_workers();
}
cleanup_lockfiles();
+ free_state_path_names(&etab);
+ free_state_path_names(&rmtab);
xlog (L_NOTICE, "Caught signal %d, un-registering and exiting.", sig);
exit(0);
}
@@ -656,7 +664,6 @@ get_exportlist(void)
int
main(int argc, char **argv)
{
- char *state_dir = NFS_STATEDIR;
char *progname;
char *s;
unsigned int listeners = 0;
@@ -684,8 +691,8 @@ main(int argc, char **argv)
ha_callout_prog = conf_get_str("mountd", "ha-callout");
s = conf_get_str("mountd", "state-directory-path");
- if (s)
- state_dir = s;
+ if (s && !state_setup_basedir(argv[0], s))
+ exit(1);
/* NOTE: following uses "nfsd" section of nfs.conf !!!! */
if (conf_get_bool("nfsd", "udp", NFSCTL_UDPISSET(_rpcprotobits)))
@@ -758,7 +765,8 @@ main(int argc, char **argv)
reverse_resolve = 1;
break;
case 's':
- state_dir = xstrdup(optarg);
+ if (!state_setup_basedir(argv[0], optarg))
+ exit(1);
break;
case 't':
num_threads = atoi (optarg);
@@ -790,11 +798,10 @@ main(int argc, char **argv)
fprintf(stderr, "%s: No protocol versions specified!\n", progname);
usage(progname, 1);
}
- if (chdir(state_dir)) {
- fprintf(stderr, "%s: chdir(%s) failed: %s\n",
- progname, state_dir, strerror(errno));
- exit(1);
- }
+ if (!setup_state_path_names(progname, ETAB, ETABTMP, ETABLCK, &etab))
+ return 1;
+ if (!setup_state_path_names(progname, RMTAB, RMTABTMP, RMTABLCK, &rmtab))
+ return 1;
if (getrlimit (RLIMIT_NOFILE, &rlim) != 0)
fprintf(stderr, "%s: getrlimit (RLIMIT_NOFILE) failed: %s\n",
@@ -888,6 +895,8 @@ main(int argc, char **argv)
xlog(L_ERROR, "RPC service loop terminated unexpectedly. Exiting...\n");
unregister_services();
+ free_state_path_names(&etab);
+ free_state_path_names(&rmtab);
exit(1);
}
@@ -144,7 +144,7 @@ Instead, mount the nfsd filesystem on
.IR /proc/fs/nfsd .
.TP
.BI "\-s," "" " \-\-state\-directory\-path " directory
-Specify a directory in which to place statd state information.
+Specify a directory in which to place state information (etab and rmtab).
If this option is not specified the default of
.I /var/lib/nfs
is used.
@@ -28,6 +28,8 @@
extern int reverse_resolve;
+extern struct state_paths rmtab;
+
/* If new path is a link do not destroy it but place the
* file where the link points.
*/
@@ -59,7 +61,7 @@ mountlist_add(char *host, const char *path)
int lockid;
long pos;
- if ((lockid = xflock(_PATH_RMTABLCK, "a")) < 0)
+ if ((lockid = xflock(rmtab.lockfn, "a")) < 0)
return;
setrmtabent("r+");
while ((rep = getrmtabent(1, &pos)) != NULL) {
@@ -99,13 +101,13 @@ mountlist_del(char *hname, const char *path)
int lockid;
int match;
- if ((lockid = xflock(_PATH_RMTABLCK, "w")) < 0)
+ if ((lockid = xflock(rmtab.lockfn, "w")) < 0)
return;
if (!setrmtabent("r")) {
xfunlock(lockid);
return;
}
- if (!(fp = fsetrmtabent(_PATH_RMTABTMP, "w"))) {
+ if (!(fp = fsetrmtabent(rmtab.tmpfn, "w"))) {
endrmtabent();
xfunlock(lockid);
return;
@@ -121,9 +123,9 @@ mountlist_del(char *hname, const char *path)
if (!match || rep->r_count)
fputrmtabent(fp, rep, NULL);
}
- if (slink_safe_rename(_PATH_RMTABTMP, _PATH_RMTAB) < 0) {
+ if (slink_safe_rename(rmtab.tmpfn, rmtab.statefn) < 0) {
xlog(L_ERROR, "couldn't rename %s to %s",
- _PATH_RMTABTMP, _PATH_RMTAB);
+ rmtab.tmpfn, rmtab.statefn);
}
endrmtabent(); /* close & unlink */
fendrmtabent(fp);
@@ -138,7 +140,7 @@ mountlist_del_all(const struct sockaddr *sap)
FILE *fp;
int lockid;
- if ((lockid = xflock(_PATH_RMTABLCK, "w")) < 0)
+ if ((lockid = xflock(rmtab.lockfn, "w")) < 0)
return;
hostname = host_canonname(sap);
if (hostname == NULL) {
@@ -151,7 +153,7 @@ mountlist_del_all(const struct sockaddr *sap)
if (!setrmtabent("r"))
goto out_free;
- if (!(fp = fsetrmtabent(_PATH_RMTABTMP, "w")))
+ if (!(fp = fsetrmtabent(rmtab.tmpfn, "w")))
goto out_close;
while ((rep = getrmtabent(1, NULL)) != NULL) {
@@ -160,9 +162,9 @@ mountlist_del_all(const struct sockaddr *sap)
continue;
fputrmtabent(fp, rep, NULL);
}
- if (slink_safe_rename(_PATH_RMTABTMP, _PATH_RMTAB) < 0) {
+ if (slink_safe_rename(rmtab.tmpfn, rmtab.statefn) < 0) {
xlog(L_ERROR, "couldn't rename %s to %s",
- _PATH_RMTABTMP, _PATH_RMTAB);
+ rmtab.tmpfn, rmtab.statefn);
}
fendrmtabent(fp);
out_close:
@@ -195,11 +197,11 @@ mountlist_list(void)
struct stat stb;
int lockid;
- if ((lockid = xflock(_PATH_RMTABLCK, "r")) < 0)
+ if ((lockid = xflock(rmtab.lockfn, "r")) < 0)
return NULL;
- if (stat(_PATH_RMTAB, &stb) < 0) {
+ if (stat(rmtab.statefn, &stb) < 0) {
xlog(L_ERROR, "can't stat %s: %s",
- _PATH_RMTAB, strerror(errno));
+ rmtab.statefn, strerror(errno));
xfunlock(lockid);
return NULL;
}
Signed-off-by: Scott Mayhew <smayhew@redhat.com> --- support/export/xtab.c | 82 +++++++++++++++++++++++++++++++++++++++++++++-- support/include/nfslib.h | 17 ++++++++++ support/nfs/cacheio.c | 4 ++- support/nfs/rmtab.c | 4 ++- utils/exportfs/exportfs.c | 13 ++++++++ utils/mountd/auth.c | 8 +++-- utils/mountd/mountd.c | 31 +++++++++++------- utils/mountd/mountd.man | 2 +- utils/mountd/rmtab.c | 26 ++++++++------- 9 files changed, 156 insertions(+), 31 deletions(-)