the real source code for the smbfs utilities. Forgot to do

cvs add first.
Volker

1 files changed, 297 insertions, 0 deletions

diff --git a/source/client/smbmnt.c b/source/client/smbmnt.c
new file mode 100644
index 00000000000..9bb7f566721
--- /dev/null
+++ b/source/client/smbmnt.c
@@ -0,0 +1,297 @@
+/*
+ *  smbmount.c
+ *
+ *  Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/socket.h>
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+/* #include <sys/wait.h> */  /* generates a warning here */
+extern pid_t waitpid(pid_t, int *, int);
+#include <sys/errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <sys/mount.h>
+#include <mntent.h>
+
+#include <linux/fs.h>
+#include <linux/smb.h>
+#include <linux/smb_mount.h>
+
+#include <asm/unistd.h>
+
+static char *progname;
+
+
+static void
+usage(void)
+{
+        printf("usage: %s mount-point [options]\n", progname);
+        printf("Try `%s -h' for more information\n", progname);
+}
+
+static void
+help(void)
+{
+        printf("\n");
+        printf("usage: %s mount-point [options]\n", progname);
+        printf("-u uid         uid the mounted files get\n"
+               "-g gid         gid the mounted files get\n"
+               "-f mode        permission the files get (octal notation)\n"
+               "-d mode        permission the dirs get (octal notation)\n"
+	       "-P pid         connection handler's pid\n\n"
+               "-h             print this help text\n");
+}
+
+static int
+parse_args(int argc, char *argv[], struct smb_mount_data *data)
+{
+        int opt;
+        struct passwd *pwd;
+        struct group  *grp;
+
+        while ((opt = getopt (argc, argv, "u:g:f:d:"))
+	       != EOF)
+	{
+                switch (opt)
+		{
+                case 'u':
+                        if (isdigit(optarg[0]))
+			{
+                                data->uid = atoi(optarg);
+                        }
+			else
+			{
+                                pwd = getpwnam(optarg);
+                                if (pwd == NULL)
+				{
+                                        fprintf(stderr, "Unknown user: %s\n",
+                                                optarg);
+                                        return 1;
+                                }
+                                data->uid = pwd->pw_uid;
+                        }
+                        break;
+                case 'g':
+                        if (isdigit(optarg[0]))
+			{
+                                data->gid = atoi(optarg);
+                        }
+			else
+			{
+                                grp = getgrnam(optarg);
+                                if (grp == NULL)
+				{
+                                        fprintf(stderr, "Unknown group: %s\n",
+                                                optarg);
+                                        return 1;
+                                }
+                                data->gid = grp->gr_gid;
+                        }
+                        break;
+                case 'f':
+                        data->file_mode = strtol(optarg, NULL, 8);
+                        break;
+                case 'd':
+                        data->dir_mode = strtol(optarg, NULL, 8);
+                        break;
+                default:
+                        return -1;
+                }
+        }
+        return 0;
+        
+}
+
+static char *
+fullpath(const char *p)
+{
+        char path[MAXPATHLEN];
+
+	if (strlen(p) > MAXPATHLEN-1)
+	{
+		return NULL;
+	}
+
+        if (realpath(p, path) == NULL)
+	{
+                return strdup(p);
+	}
+	return strdup(path);
+}
+
+/* Check whether user is allowed to mount on the specified mount point */
+static int
+mount_ok(struct stat *st)
+{
+        if (!S_ISDIR(st->st_mode))
+        {
+                errno = ENOTDIR;
+                return -1;
+        }
+	
+        if (   (getuid() != 0)
+            && (   (getuid() != st->st_uid)
+                || ((st->st_mode & S_IRWXU) != S_IRWXU)))
+        {
+                errno = EPERM;
+                return -1;
+        }
+
+        return 0;
+}
+
+int 
+main(int argc, char *argv[])
+{
+        struct smb_mount_data data;
+        struct stat st;
+
+        int fd;
+        int um;
+	unsigned int flags;
+
+        char *mount_point;
+
+        struct mntent ment;
+        FILE *mtab;
+
+        progname = argv[0];
+
+	memset(&data, 0, sizeof(struct smb_mount_data));
+
+	if (   (argc == 2)
+	       && (argv[1][0] == '-')
+	       && (argv[1][1] == 'h')
+	       && (argv[1][2] == '\0'))
+	{
+		help();
+		return 0;
+	}
+
+        if (geteuid() != 0) {
+                fprintf(stderr, "%s must be installed suid root\n", progname);
+                exit(1);
+        }
+
+	if (argc < 2)
+	{
+		usage();
+		return 1;
+	}
+
+        mount_point = argv[1];
+
+        argv += 1;
+        argc -= 1;
+
+        if (stat(mount_point, &st) == -1) {
+                fprintf(stderr, "could not find mount point %s: %s\n",
+                        mount_point, strerror(errno));
+                exit(1);
+        }
+
+        if (mount_ok(&st) != 0) {
+                fprintf(stderr, "cannot mount on %s: %s\n",
+                        mount_point, strerror(errno));
+                exit(1);
+        }
+
+	data.version = SMB_MOUNT_VERSION;
+
+        /* getuid() gives us the real uid, who may umount the fs */
+        data.mounted_uid = getuid();
+
+        data.uid = getuid();
+        data.gid = getgid();
+        um = umask(0);
+        umask(um);
+        data.file_mode = (S_IRWXU|S_IRWXG|S_IRWXO) & ~um;
+        data.dir_mode  = 0;
+
+        if (parse_args(argc, argv, &data) != 0) {
+                usage();
+                return -1;
+        }
+
+        if (data.dir_mode == 0) {
+                data.dir_mode = data.file_mode;
+                if ((data.dir_mode & S_IRUSR) != 0)
+                        data.dir_mode |= S_IXUSR;
+                if ((data.dir_mode & S_IRGRP) != 0)
+                        data.dir_mode |= S_IXGRP;
+                if ((data.dir_mode & S_IROTH) != 0)
+                        data.dir_mode |= S_IXOTH;
+        }
+
+	flags = MS_MGC_VAL;
+
+	if (mount(NULL, mount_point, "smbfs",
+                  flags, (char *)&data) < 0) {
+		perror("mount error");
+		printf("Please look at smbmount's manual page for "
+		       "possible reasons\n");
+		return -1;
+	}
+
+        ment.mnt_fsname = "none";
+        ment.mnt_dir = fullpath(mount_point);
+        ment.mnt_type = "smbfs";
+        ment.mnt_opts = "";
+        ment.mnt_freq = 0;
+        ment.mnt_passno= 0;
+
+        mount_point = ment.mnt_dir;
+
+	if (mount_point == NULL)
+	{
+		fprintf(stderr, "Mount point too long\n");
+		return -1;
+	}
+	
+        if ((fd = open(MOUNTED"~", O_RDWR|O_CREAT|O_EXCL, 0600)) == -1)
+        {
+                fprintf(stderr, "Can't get "MOUNTED"~ lock file");
+                return 1;
+        }
+        close(fd);
+	
+        if ((mtab = setmntent(MOUNTED, "a+")) == NULL)
+        {
+                fprintf(stderr, "Can't open " MOUNTED);
+                return 1;
+        }
+
+        if (addmntent(mtab, &ment) == 1)
+        {
+                fprintf(stderr, "Can't write mount entry");
+                return 1;
+        }
+        if (fchmod(fileno(mtab), 0644) == -1)
+        {
+                fprintf(stderr, "Can't set perms on "MOUNTED);
+                return 1;
+        }
+        endmntent(mtab);
+
+        if (unlink(MOUNTED"~") == -1)
+        {
+                fprintf(stderr, "Can't remove "MOUNTED"~");
+                return 1;
+        }
+
+	return 0;
+}