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Diffstat (limited to 'usr/src/cmd/fs.d/dev/mount.c')
-rw-r--r--usr/src/cmd/fs.d/dev/mount.c363
1 files changed, 363 insertions, 0 deletions
diff --git a/usr/src/cmd/fs.d/dev/mount.c b/usr/src/cmd/fs.d/dev/mount.c
new file mode 100644
index 0000000000..bf222c9db0
--- /dev/null
+++ b/usr/src/cmd/fs.d/dev/mount.c
@@ -0,0 +1,363 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#include <sys/types.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <errno.h>
+#include <string.h>
+#include <locale.h>
+#include <sys/stat.h>
+#include <sys/mount.h>
+#include <sys/mntent.h>
+#include <sys/fs/sdev_node.h>
+
+
+#define READFLAG_RO 1
+#define READFLAG_RW 2
+
+
+extern int optind;
+extern char *optarg;
+
+static char typename[64], *myname;
+static char fstype[] = MNTTYPE_DEV;
+
+static int readflag;
+static int overlay;
+static int remount;
+
+static char *special;
+static char *mountpt;
+static struct sdev_mountargs mountargs;
+
+static char *myopts[] = {
+#define SUBOPT_READONLY 0
+ "ro",
+#define SUBOPT_READWRITE 1
+ "rw",
+#define SUBOPT_ATTRIBDIR 2
+ "attrdir",
+#define SUBOPT_REMOUNT 3
+ "remount",
+ NULL
+};
+
+
+static void
+usage(void)
+{
+ (void) fprintf(stderr, gettext(
+ "%s usage:\n%s [-F %s] [-r] [-o specific_options]"
+ " {special | mount_point}\n%s [-F %s] [-r] [-o specific_options]"
+ " special mount_point\n"), fstype, myname, fstype, myname, fstype);
+ exit(1);
+}
+
+
+static int
+do_mount(void)
+{
+ int flags = MS_DATA;
+
+ if (readflag == READFLAG_RO)
+ flags |= MS_RDONLY;
+ if (overlay)
+ flags |= MS_OVERLAY;
+ if (remount)
+ flags |= MS_REMOUNT;
+
+ if (mount(special, mountpt, flags, fstype, &mountargs,
+ sizeof (mountargs), NULL, 0)) {
+ switch (errno) {
+ case EPERM:
+ (void) fprintf(stderr, gettext("%s: not super user\n"),
+ typename);
+ break;
+ case ENXIO:
+ (void) fprintf(stderr, gettext("%s: %s no such "
+ "device\n"), typename, special);
+ break;
+ case ENOTDIR:
+ (void) fprintf(stderr, gettext("%s: %s "
+ "not a directory\n"
+ "\tor a component of %s is not a directory\n"),
+ typename, mountpt, special);
+ break;
+ case ENOENT:
+ (void) fprintf(stderr, gettext("%s: %s or %s, no such "
+ "file or directory\n"),
+ typename, special, mountpt);
+ break;
+ case EINVAL:
+ (void) fprintf(stderr, gettext("%s: %s is not this "
+ "filesystem type.\n"), typename, special);
+ break;
+ case EBUSY:
+ (void) fprintf(stderr, gettext("%s: %s "
+ "is already mounted, %s is busy,\n"
+ "\tor allowable number of mount points exceeded\n"),
+ typename, special, mountpt);
+ break;
+ case ENOTBLK:
+ (void) fprintf(stderr, gettext("%s: %s not a block "
+ "device\n"), typename, special);
+ break;
+ case EROFS:
+ (void) fprintf(stderr, gettext("%s: %s read-only "
+ "filesystem\n"), typename, special);
+ break;
+ case ENOSPC:
+ (void) fprintf(stderr, gettext("%s: the state of %s "
+ "is not okay\n"
+ "\tand read/write mount was attempted\n"),
+ typename, special);
+ break;
+ default:
+ (void) fprintf(stderr, gettext("%s: cannot mount %s: "
+ "%s\n"), typename, special, strerror(errno));
+ break;
+ }
+ return (-1);
+ }
+ return (0);
+}
+
+
+/*
+ * Wrapper around strdup().
+ */
+static char *
+do_strdup(const char *s1)
+{
+ char *str;
+
+ str = strdup(s1);
+ if (str == NULL) {
+ (void) fprintf(stderr, gettext("%s: strdup failed: %s\n"),
+ typename, strerror(errno));
+ }
+ return (str);
+}
+
+
+/*
+ * Wrapper around stat().
+ */
+static int
+do_stat(const char *path, struct stat *buf)
+{
+ int ret;
+
+ ret = stat(path, buf);
+ if (ret < 0) {
+ (void) fprintf(stderr, gettext("%s: can't stat %s: %s\n"),
+ typename, path, strerror(errno));
+ }
+ return (ret);
+}
+
+
+/*
+ * Wraper around realpath()
+ */
+static char *
+do_realpath(const char *path, char *resolved_path)
+{
+ char *ret;
+
+ ret = realpath(path, resolved_path);
+ if (ret == NULL) {
+ (void) fprintf(stderr, gettext("%s: realpath %s failed: %s\n"),
+ typename, path, strerror(errno));
+ }
+ return (ret);
+}
+
+
+static int
+parse_subopts(char *subopts)
+{
+ char *value;
+ char path[PATH_MAX + 1];
+
+ while (*subopts != '\0') {
+ switch (getsubopt(&subopts, myopts, &value)) {
+ case SUBOPT_READONLY:
+ if (readflag == READFLAG_RW) {
+ (void) fprintf(stderr, gettext("%s: both "
+ "read-only and read-write options "
+ "specified\n"), typename);
+ return (-1);
+ }
+ readflag = READFLAG_RO;
+ break;
+
+ case SUBOPT_READWRITE:
+ if (readflag == READFLAG_RO) {
+ (void) fprintf(stderr, gettext("%s: both "
+ "read-only and read-write options "
+ "specified\n"), typename);
+ return (-1);
+ }
+ readflag = READFLAG_RW;
+ break;
+
+ case SUBOPT_ATTRIBDIR:
+ if (value == NULL) {
+ (void) fprintf(stderr, gettext("%s: no "
+ "attribute directory\n"), typename);
+ return (-1);
+ } else {
+ if (do_realpath(value, path) == NULL)
+ return (-1);
+ mountargs.sdev_attrdir =
+ (uint64_t)(uintptr_t)do_strdup(path);
+ if (mountargs.sdev_attrdir == NULL)
+ return (-1);
+ }
+ break;
+
+ case SUBOPT_REMOUNT:
+ remount = 1;
+ break;
+
+ default:
+ (void) fprintf(stderr, gettext("%s: illegal -o "
+ "suboption: %s\n"), typename, value);
+ return (-1);
+ }
+ }
+ return (0);
+}
+
+
+int
+main(int argc, char **argv)
+{
+ struct stat st;
+ char mntpath[PATH_MAX + 1];
+ int cc;
+
+ (void) setlocale(LC_ALL, "");
+
+#if !defined(TEXT_DOMAIN)
+#define TEXT_DOMAIN "SYS_TEST"
+#endif
+ (void) textdomain(TEXT_DOMAIN);
+
+ if (myname = strrchr(argv[0], '/'))
+ myname++;
+ else
+ myname = argv[0];
+ (void) snprintf(typename, sizeof (typename), "%s %s", fstype, myname);
+ argv[0] = typename;
+
+ while ((cc = getopt(argc, argv, "?o:rmO")) != -1) {
+ switch (cc) {
+ case 'r':
+ if (readflag == READFLAG_RW) {
+ (void) fprintf(stderr, gettext("%s: both "
+ "read-only and read-write options "
+ "specified\n"), typename);
+ return (1);
+ }
+ readflag = READFLAG_RO;
+ break;
+
+ case 'O':
+ overlay = 1;
+ break;
+
+ case 'o':
+ if (parse_subopts(optarg))
+ return (1);
+ break;
+
+ default:
+ usage();
+ break;
+ }
+ }
+
+ /*
+ * There must be at least 2 more arguments, the
+ * special file and the directory.
+ */
+ if ((argc - optind) != 2)
+ usage();
+
+ special = argv[optind++];
+
+ if (do_realpath(argv[optind++], mntpath) == NULL)
+ return (1);
+ mountpt = mntpath;
+
+ if (mountpt) {
+ if (do_stat(mountpt, &st) < 0)
+ return (1);
+ if (! S_ISDIR(st.st_mode)) {
+ (void) fprintf(stderr, gettext("%s: %s is not a "
+ "directory\n"), typename, mountpt);
+ return (1);
+ }
+ }
+
+ if (mountargs.sdev_attrdir) {
+ if (do_stat((const char *)(uintptr_t)mountargs.sdev_attrdir,
+ &st) < 0)
+ return (1);
+ if (! S_ISDIR(st.st_mode)) {
+ (void) fprintf(stderr, gettext("%s: %s is not a "
+ "directory\n"), typename, mountargs.sdev_attrdir);
+ return (1);
+ }
+ }
+
+ /* Special checks if /dev is the mount point */
+ /* Remount of /dev requires an attribute directory */
+ if (strcmp(mountpt, "/dev") == 0 && remount &&
+ mountargs.sdev_attrdir == NULL) {
+ (void) fprintf(stderr, gettext("%s: missing attribute "
+ "directory\n"), typename);
+ return (1);
+ }
+
+ (void) signal(SIGHUP, SIG_IGN);
+ (void) signal(SIGQUIT, SIG_IGN);
+ (void) signal(SIGINT, SIG_IGN);
+
+ /* Perform the mount */
+ if (do_mount())
+ return (1);
+
+ return (0);
+}
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