X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fmount%2Fmount.c;h=fe2c48b4d0617d419ef48f756a4eb0656afe0d87;hp=9ac817cd42e04c565f618f3ea630ccceff04ddde;hb=1ca7f42bfa6d4f47c88f82ecc33f2abb3cf92da7;hpb=7a92dbf8cc01ed3b32c124d8f23348a39b992b54

diff --git a/utils/mount/mount.c b/utils/mount/mount.c
index 9ac817c..fe2c48b 100644
--- a/utils/mount/mount.c
+++ b/utils/mount/mount.c
@@ -42,12 +42,17 @@
 #include "mount.h"
 #include "error.h"
 #include "network.h"
+#include "stropts.h"
 
 char *progname;
 int nfs_mount_data_version;
 int nomtab;
 int verbose;
 int sloppy;
+int string;
+
+#define FOREGROUND	(0)
+#define BACKGROUND	(1)
 
 static struct option longopts[] = {
   { "fake", 0, 0, 'f' },
@@ -59,6 +64,7 @@ static struct option longopts[] = {
   { "version", 0, 0, 'V' },
   { "read-write", 0, 0, 'w' },
   { "rw", 0, 0, 'w' },
+  { "string", 0, 0, 'i' },
   { "options", 1, 0, 'o' },
   { NULL, 0, 0, 0 }
 };
@@ -231,7 +237,8 @@ static int add_mtab(char *spec, char *mount_point, char *fstype,
 
 	if (flags & MS_REMOUNT) {
 		update_mtab(ment.mnt_dir, &ment);
-		return 0;
+		free(ment.mnt_opts);
+		return EX_SUCCESS;
 	}
 
 	lock_mtab();
@@ -255,19 +262,20 @@ static int add_mtab(char *spec, char *mount_point, char *fstype,
 		goto fail_close;
 	}
 
-	result = 0;
+	result = EX_SUCCESS;
 
 fail_close:
 	endmntent(mtab);
 fail_unlock:
 	unlock_mtab();
+	free(ment.mnt_opts);
 
 	return result;
 }
 
 void mount_usage(void)
 {
-	printf(_("usage: %s remotetarget dir [-rvVwfnh] [-o nfsoptions]\n"),
+	printf(_("usage: %s remotetarget dir [-rvVwfnsih] [-o nfsoptions]\n"),
 		progname);
 	printf(_("options:\n"));
 	printf(_("\t-r\t\tMount file system readonly\n"));
@@ -276,7 +284,8 @@ void mount_usage(void)
 	printf(_("\t-w\t\tMount file system read-write\n"));
 	printf(_("\t-f\t\tFake mount, do not actually mount\n"));
 	printf(_("\t-n\t\tDo not update /etc/mtab\n"));
-	printf(_("\t-s\t\tTolerate sloppy mount options rather than failing.\n"));
+	printf(_("\t-s\t\tTolerate sloppy mount options rather than fail\n"));
+	printf(_("\t-i\t\tPass mount options to the kernel via a string\n"));
 	printf(_("\t-h\t\tPrint this help\n"));
 	printf(_("\tnfsoptions\tRefer to mount.nfs(8) or nfs(5)\n\n"));
 }
@@ -361,6 +370,40 @@ static int chk_mountpoint(char *mount_point)
 	return 0;
 }
 
+static int try_mount(char *spec, char *mount_point, int flags,
+			char *fs_type, char **extra_opts, char *mount_opts,
+			int fake, int nomtab, int bg)
+{
+	int ret;
+
+	if (string) {
+		if (strcmp(fs_type, "nfs4") == 0)
+			ret = nfs4mount_s(spec, mount_point, flags,
+						extra_opts, fake, bg);
+		else
+			ret = nfsmount_s(spec, mount_point, flags,
+						extra_opts, fake, bg);
+	} else {
+		if (strcmp(fs_type, "nfs4") == 0)
+			ret = nfs4mount(spec, mount_point, flags,
+					extra_opts, fake, bg);
+		else
+			ret = nfsmount(spec, mount_point, flags,
+					extra_opts, fake, bg);
+	}
+
+	if (ret)
+		return ret;
+
+	if (!fake)
+		print_one(spec, mount_point, fs_type, mount_opts);
+
+	if (!nomtab)
+		ret = add_mtab(spec, mount_point, fs_type, flags, *extra_opts,
+				0, 0 /* these are always zero for NFS */ );
+	return ret;
+}
+
 int main(int argc, char *argv[])
 {
 	int c, flags = 0, mnt_err = 1, fake = 0;
@@ -380,7 +423,7 @@ int main(int argc, char *argv[])
 			printf("%s ("PACKAGE_STRING")\n", progname);
 		else
 			mount_usage();
-		exit(0);
+		exit(EX_SUCCESS);
 	}
 
 	if ((argc < 3)) {
@@ -392,7 +435,7 @@ int main(int argc, char *argv[])
 	mount_point = argv[2];
 
 	argv[2] = argv[0]; /* so that getopt error messages are correct */
-	while ((c = getopt_long(argc - 2, argv + 2, "rvVwfno:hs",
+	while ((c = getopt_long(argc - 2, argv + 2, "rvVwfno:hsi",
 				longopts, NULL)) != -1) {
 		switch (c) {
 		case 'r':
@@ -403,7 +446,7 @@ int main(int argc, char *argv[])
 			break;
 		case 'V':
 			printf("%s: ("PACKAGE_STRING")\n", progname);
-			return 0;
+			exit(EX_SUCCESS);
 		case 'w':
 			flags &= ~MS_RDONLY;
 			break;
@@ -422,6 +465,20 @@ int main(int argc, char *argv[])
 		case 's':
 			++sloppy;
 			break;
+		case 'i':
+			if (linux_version_code() < MAKE_VERSION(2, 6, 23)) {
+				nfs_error(_("%s: Passing mount options via a"
+					" string is unsupported by this"
+					" kernel\n"), progname);
+				exit(EX_USAGE);
+			}
+			if (uid != 0) {
+				nfs_error(_("%s: -i option is restricted to 'root'\n"),
+					progname);
+				exit(EX_USAGE);
+			}
+			++string;
+			break;
 		case 'h':
 		default:
 			mount_usage();
@@ -492,24 +549,33 @@ int main(int argc, char *argv[])
 		goto out;
 	}
 
-	if (strcmp(fs_type, "nfs4") == 0)
-		mnt_err = nfs4mount(spec, mount_point, flags,
-					&extra_opts, fake, 0);
-	else
-		mnt_err = nfsmount(spec, mount_point, flags,
-					&extra_opts, fake, 0);
-
-	if (mnt_err)
-		exit(EX_FAIL);
+	mnt_err = try_mount(spec, mount_point, flags, fs_type, &extra_opts,
+				mount_opts, fake, nomtab, FOREGROUND);
+	if (mnt_err == EX_BG) {
+		printf(_("%s: backgrounding \"%s\"\n"),
+			progname, spec);
+		fflush(stdout);
 
-	if (!fake)
-		print_one(spec, mount_point, fs_type, mount_opts);
+		/*
+		 * Parent exits immediately with success.
+		 */
+		if (daemon(0, 0)) {
+			nfs_error(_("%s: failed to start "
+					"background process: %s\n"),
+						progname, strerror(errno));
+			exit(EX_FAIL);
+		}
 
-	if (!nomtab)
-		mnt_err = add_mtab(spec, mount_point, fs_type, flags, extra_opts,
-				0, 0 /* these are always zero for NFS */ );
+		mnt_err = try_mount(spec, mount_point, flags, fs_type,
+					&extra_opts, mount_opts, fake,
+					nomtab, BACKGROUND);
+		if (verbose && mnt_err)
+			printf(_("%s: giving up \"%s\"\n"),
+				progname, spec);
+	}
 
 out:
+	free(extra_opts);
 	free(mount_point);
 	exit(mnt_err);
 }