#include "xcommon.h"
#include "fstab.h"
#include "nls.h"
-#include "conn.h"
#include "mount_constants.h"
#include "mount.h"
-#include "nfsumount.h"
#include "error.h"
#include "network.h"
int lazy;
int remount;
+
+static int try_remount(const char *spec, const char *node)
+{
+ int res;
+
+ res = mount(spec, node, NULL,
+ MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL);
+ if (res == 0) {
+ struct mntent remnt;
+ nfs_error(_("%s: %s busy - remounted read-only"),
+ progname, spec);
+ remnt.mnt_type = remnt.mnt_fsname = NULL;
+ remnt.mnt_dir = xstrdup(node);
+ remnt.mnt_opts = xstrdup("ro");
+ if (!nomtab)
+ update_mtab(node, &remnt);
+ } else if (errno != EBUSY) { /* hmm ... */
+ perror(_("remount"));
+ nfs_error(_("%s: could not remount %s read-only"),
+ progname, spec);
+ }
+ return res;
+}
+
static int del_mtab(const char *spec, const char *node)
{
int umnt_err, res;
- umnt_err = 0;
- if (lazy) {
- res = umount2 (node, MNT_DETACH);
- if (res < 0)
- umnt_err = errno;
- goto writemtab;
- }
-
- if (force) {
- res = umount2 (node, MNT_FORCE);
- if (res == -1) {
- int errsv = errno;
- perror("umount2");
- errno = errsv;
- if (errno == ENOSYS) {
- if (verbose)
- printf(_("no umount2, trying umount...\n"));
- res = umount (node);
- }
- }
- } else
- res = umount (node);
-
- if (res < 0 && remount && errno == EBUSY && spec) {
- /* Umount failed - let us try a remount */
- res = mount(spec, node, NULL,
- MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL);
- if (res == 0) {
- struct mntent remnt;
- nfs_error(_("%s: %s busy - remounted read-only"),
- progname, spec);
- remnt.mnt_type = remnt.mnt_fsname = NULL;
- remnt.mnt_dir = xstrdup(node);
- remnt.mnt_opts = xstrdup("ro");
- if (!nomtab)
- update_mtab(node, &remnt);
- return 0;
- } else if (errno != EBUSY) { /* hmm ... */
- perror("remount");
- nfs_error(_("%s: could not remount %s read-only"),
- progname, spec);
- }
- }
-
- if (res >= 0) {
- /* Umount succeeded */
- if (verbose)
- printf (_("%s umounted\n"), spec ? spec : node);
- }
+ umnt_err = 0;
+ if (lazy) {
+ res = umount2 (node, MNT_DETACH);
+ if (res < 0)
+ umnt_err = errno;
+ goto writemtab;
+ }
+
+ if (force) {
+ res = umount2 (node, MNT_FORCE);
+ if (res == -1) {
+ int errsv = errno;
+ perror(_("umount2"));
+ errno = errsv;
+ if (errno == ENOSYS) {
+ if (verbose)
+ printf(_("no umount2, trying umount...\n"));
+ res = umount (node);
+ }
+ }
+ } else
+ res = umount (node);
+
+ if (res < 0) {
+ if (remount && errno == EBUSY && spec) {
+ res = try_remount(spec, node);
+ if (res)
+ goto writemtab;
+ return 0;
+ } else
+ umnt_err = errno;
+ }
+
+ if (res >= 0) {
+ /* Umount succeeded */
+ if (verbose)
+ printf(_("%s umounted\n"), spec ? spec : node);
+ }
writemtab:
- if (!nomtab &&
- (umnt_err == 0 || umnt_err == EINVAL || umnt_err == ENOENT)) {
- update_mtab(node, NULL);
- }
+ if (!nomtab &&
+ (umnt_err == 0 || umnt_err == EINVAL || umnt_err == ENOENT)) {
+ update_mtab(node, NULL);
+ }
- if (res >= 0)
- return 0;
+ if (res >= 0)
+ return 0;
- if (umnt_err)
- umount_error(umnt_err, node);
- return EX_FILEIO;
+ if (umnt_err)
+ umount_error(umnt_err, node);
+ return EX_FILEIO;
}
+/*
+ * Pick up certain mount options used during the original mount
+ * from /etc/mtab. The basics include the server's IP address and
+ * the server pathname of the share to unregister.
+ *
+ * These options might also describe the mount port, mount protocol
+ * version, and transport protocol used to punch through a firewall.
+ * We will need this information to get through the firewall again
+ * to do the umount.
+ */
static int do_nfs_umount(const char *spec, char *opts)
{
char *hostname;
pmap->pm_vers = atoi(p+10);
if (opts && (hasmntopt(&mnt, "udp") || hasmntopt(&mnt, "proto=udp")))
pmap->pm_prot = IPPROTO_UDP;
+ if (opts && (hasmntopt(&mnt, "tcp") || hasmntopt(&mnt, "proto=tcp")))
+ pmap->pm_prot = IPPROTO_TCP;
if (!nfs_gethostbyname(hostname, &mnt_server.saddr)) {
nfs_error(_("%s: '%s' does not contain a recognized hostname"),
return EX_USAGE;
}
- return 0;
+ return EX_SUCCESS;
}
static struct option umount_longopts[] =
static void umount_usage(void)
{
- printf("usage: %s dir [-fvnrlh]\n", progname);
- printf("options:\n\t-f\t\tforce unmount\n");
- printf("\t-v\t\tverbose\n");
- printf("\t-n\t\tDo not update /etc/mtab\n");
- printf("\t-r\t\tremount\n");
- printf("\t-l\t\tlazy unmount\n");
- printf("\t-h\t\tprint this help\n\n");
+ printf(_("usage: %s dir [-fvnrlh]\n"), progname);
+ printf(_("options:\n\t-f\t\tforce unmount\n"));
+ printf(_("\t-v\tverbose\n"));
+ printf(_("\t-n\tDo not update /etc/mtab\n"));
+ printf(_("\t-r\tremount\n"));
+ printf(_("\t-l\tlazy unmount\n"));
+ printf(_("\t-h\tprint this help\n\n"));
}
int nfsumount(int argc, char *argv[])
if (mc && strcmp(mc->m.mnt_type, "nfs") != 0 &&
strcmp(mc->m.mnt_type, "nfs4") != 0) {
- nfs_error(_("%s: %s on %s it not an nfs filesystem"),
+ nfs_error(_("%s: %s on %s is not an NFS filesystem"),
progname, mc->m.mnt_fsname, mc->m.mnt_dir);
return EX_USAGE;
}
/* umount might call us twice. The second time there will
* be no entry in mtab and we should just exit quietly
*/
- return 0;
+ return EX_SUCCESS;
only_root:
nfs_error(_("%s: You are not permitted to unmount %s"),
ret = 0;
if (mc) {
- if (!lazy)
+ if (!lazy && strcmp(mc->m.mnt_type, "nfs4") != 0)
ret = do_nfs_umount(mc->m.mnt_fsname, mc->m.mnt_opts);
if (!ret || force)
ret = del_mtab(mc->m.mnt_fsname, mc->m.mnt_dir);
projects / nfs-utils.git / blobdiff