#include "stropts.h"
#include "error.h"
#include "network.h"
+#include "parse_opt.h"
#ifdef HAVE_RPCSVC_NFS_PROT_H
#include <rpcsvc/nfs_prot.h>
return 1;
}
-/*
- * XXX: This should really use the technique neil recently added
- * to get the address off the local end of a socket connected to
- * the server -- to get the right address to use on multi-homed
- * clients
- */
-static int get_my_ipv4addr(char *ip_addr, int len)
-{
- char myname[1024];
- struct sockaddr_in myaddr;
-
- if (gethostname(myname, sizeof(myname))) {
- nfs_error(_("%s: can't determine client address\n"),
- progname);
- return 0;
- }
- if (!fill_ipv4_sockaddr(myname, &myaddr))
- return 0;
-
- snprintf(ip_addr, len, "%s", inet_ntoa(myaddr.sin_addr));
- ip_addr[len - 1] = '\0';
-
- return 1;
-}
-
/*
* Walk through our mount options string, and indicate the presence
* of 'bg', 'retry=', 'addr=', and 'clientaddr='.
}
/*
- * Append the 'clientaddr=' option to the options string.
+ * Called if no 'clientaddr=' option was specified in the options string
+ * to discover our address and append an appropriate 'clientaddr=' option
+ * to the options string.
*
* Returns 1 if 'clientaddr=' option created successfully;
* otherwise zero.
return 1;
}
+/*
+ * Append the 'addr=' option to the options string to pass a resolved
+ * server address to the kernel. After a successful mount, this address
+ * is also added to /etc/mtab for use when unmounting.
+ *
+ * If 'addr=' is already present, we strip it out. This prevents users
+ * from setting a bogus 'addr=' option themselves, and also allows bg
+ * retries to recompute the server's address, in case it has changed.
+ *
+ * Returns 1 if 'addr=' option appended successfully;
+ * otherwise zero.
+ */
+static int append_addr_option(struct sockaddr_in *saddr,
+ struct mount_options *options)
+{
+ char new_option[24];
+
+ po_remove_all(options, "addr");
+
+ snprintf(new_option, sizeof(new_option) - 1,
+ "addr=%s", inet_ntoa(saddr->sin_addr));
+
+ if (po_append(options, new_option) == PO_SUCCEEDED)
+ return 1;
+ return 0;
+}
+
+/*
+ * Called to discover our address and append an appropriate 'clientaddr='
+ * option to the options string.
+ *
+ * Returns 1 if 'clientaddr=' option created successfully or if
+ * 'clientaddr=' option is already present; otherwise zero.
+ */
+static int append_clientaddr_option(struct sockaddr_in *saddr,
+ struct mount_options *options)
+{
+ struct sockaddr_in my_addr;
+ char new_option[32];
+
+ if (po_contains(options, "clientaddr") == PO_SUCCEEDED)
+ return 1;
+
+ if (!get_client_address(saddr, &my_addr))
+ return 0;
+
+ snprintf(new_option, sizeof(new_option) - 1,
+ "clientaddr=%s", inet_ntoa(my_addr.sin_addr));
+
+ if (po_append(options, new_option) == PO_SUCCEEDED)
+ return 1;
+ return 0;
+}
+
/*
* nfsmount_s - Mount an NFSv2 or v3 file system using C string options
*
* @extra_opts: pointer to C string containing fs-specific mount options
* (possibly also a return argument)
* @fake: flag indicating whether to carry out the whole operation
- * @bg: one if this is a backgrounded mount attempt
+ * @child: one if this is a backgrounded mount
*
* XXX: need to handle bg, fg, and retry options.
*/
int nfsmount_s(const char *spec, const char *node, int flags,
- char **extra_opts, int fake, int bg)
+ char **extra_opts, int fake, int child)
{
+ struct mount_options *options = NULL;
struct sockaddr_in saddr;
char *hostname;
- int err;
+ int err, retval = EX_FAIL;
if (!parse_devname(spec, &hostname))
- return EX_FAIL;
+ goto out;
err = fill_ipv4_sockaddr(hostname, &saddr);
free(hostname);
if (!err)
- return EX_FAIL;
-
- extract_interesting_options(*extra_opts);
+ goto out;
- if (!bg && addr_opt) {
- nfs_error(_("%s: Illegal option: 'addr='"), progname);
- return EX_FAIL;
+ options = po_split(*extra_opts);
+ if (!options) {
+ nfs_error(_("%s: internal option parsing error"), progname);
+ goto out;
}
- if (!append_addr_opt(&saddr, extra_opts))
- return EX_FAIL;
+ if (!append_addr_option(&saddr, options))
+ goto out;
+
+ if (po_join(options, extra_opts) == PO_FAILED) {
+ nfs_error(_("%s: internal option parsing error"), progname);
+ goto out;
+ }
if (verbose)
printf(_("%s: text-based options: '%s'\n"),
if (mount(spec, node, "nfs",
flags & ~(MS_USER|MS_USERS), *extra_opts)) {
mount_error(spec, node, errno);
- return EX_FAIL;
+ goto out;
}
}
- return 0;
+ retval = EX_SUCCESS;
+
+out:
+ po_destroy(options);
+ return retval;
}
/*
int nfs4mount_s(const char *spec, const char *node, int flags,
char **extra_opts, int fake, int child)
{
+ struct mount_options *options = NULL;
struct sockaddr_in saddr;
char *hostname;
- int err;
+ int err, retval = EX_FAIL;
if (!parse_devname(spec, &hostname))
- return EX_FAIL;
+ goto out;
err = fill_ipv4_sockaddr(hostname, &saddr);
free(hostname);
if (!err)
- return EX_FAIL;
-
- extract_interesting_options(*extra_opts);
+ goto out;
- if (addr_opt) {
- nfs_error(_("%s: Illegal option: 'addr='"), progname);
- return EX_FAIL;
+ options = po_split(*extra_opts);
+ if (!options) {
+ nfs_error(_("%s: internal option parsing error"), progname);
+ goto out;
}
- if (ca_opt) {
- nfs_error(_("%s: Illegal option: 'clientaddr='"), progname);
- return EX_FAIL;
- }
+ if (!append_addr_option(&saddr, options))
+ goto out;
- if (!append_addr_opt(&saddr, extra_opts))
- return EX_FAIL;
+ if (!append_clientaddr_option(&saddr, options))
+ goto out;
- if (!append_clientaddr_opt(&saddr, extra_opts))
- return EX_FAIL;
+ if (po_join(options, extra_opts) == PO_FAILED) {
+ nfs_error(_("%s: internal option parsing error"), progname);
+ goto out;
+ }
if (verbose)
printf(_("%s: text-based options: '%s'\n"),
if (mount(spec, node, "nfs4",
flags & ~(MS_USER|MS_USERS), *extra_opts)) {
mount_error(spec, node, errno);
- return EX_FAIL;
+ goto out;
}
}
- return 0;
+ retval = EX_SUCCESS;
+
+out:
+ po_destroy(options);
+ return retval;
}
projects / nfs-utils.git / blobdiff