diff options
Diffstat (limited to 'source3/client/smbmnt.c')
| -rw-r--r-- | source3/client/smbmnt.c | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/source3/client/smbmnt.c b/source3/client/smbmnt.c deleted file mode 100644 index 7f1e1d5003..0000000000 --- a/source3/client/smbmnt.c +++ /dev/null @@ -1,331 +0,0 @@ -/* - * smbmnt.c - * - * Copyright (C) 1995-1998 by Paal-Kr. Engstad and Volker Lendecke - * extensively modified by Tridge - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - * - */ - -#define SMBMOUNT_MALLOC 1 - -#include "includes.h" - -#include <mntent.h> -#include <sys/utsname.h> - -#include <asm/types.h> -#include <asm/posix_types.h> -#include <linux/smb.h> -#include <linux/smb_mount.h> -#include <asm/unistd.h> - -#ifndef MS_MGC_VAL -/* This may look strange but MS_MGC_VAL is what we are looking for and - is what we need from <linux/fs.h> under libc systems and is - provided in standard includes on glibc systems. So... We - switch on what we need... */ -#include <linux/fs.h> -#endif - -static uid_t mount_uid; -static gid_t mount_gid; -static int mount_ro; -static unsigned mount_fmask; -static unsigned mount_dmask; -static int user_mount; -static char *options; - -static void -help(void) -{ - printf("\n"); - printf("Usage: smbmnt mount-point [options]\n"); - printf("Version %s\n\n",SAMBA_VERSION_STRING); - printf("-s share share name on server\n" - "-r mount read-only\n" - "-u uid mount as uid\n" - "-g gid mount as gid\n" - "-f mask permission mask for files\n" - "-d mask permission mask for directories\n" - "-o options name=value, list of options\n" - "-h print this help text\n"); -} - -static int -parse_args(int argc, char *argv[], struct smb_mount_data *data, char **share) -{ - int opt; - - while ((opt = getopt (argc, argv, "s:u:g:rf:d:o:")) != EOF) - { - switch (opt) - { - case 's': - *share = optarg; - break; - case 'u': - if (!user_mount) { - mount_uid = strtol(optarg, NULL, 0); - } - break; - case 'g': - if (!user_mount) { - mount_gid = strtol(optarg, NULL, 0); - } - break; - case 'r': - mount_ro = 1; - break; - case 'f': - mount_fmask = strtol(optarg, NULL, 8); - break; - case 'd': - mount_dmask = strtol(optarg, NULL, 8); - break; - case 'o': - options = optarg; - break; - default: - return -1; - } - } - return 0; - -} - -static char * -fullpath(const char *p) -{ - char path[PATH_MAX+1]; - - if (strlen(p) > PATH_MAX) { - return NULL; - } - - if (realpath(p, path) == NULL) { - fprintf(stderr,"Failed to find real path for mount point %s: %s\n", - p, strerror(errno)); - exit(1); - } - return strdup(path); -} - -/* Check whether user is allowed to mount on the specified mount point. If it's - OK then we change into that directory - this prevents race conditions */ -static int mount_ok(char *mount_point) -{ - struct stat st; - - if (chdir(mount_point) != 0) { - return -1; - } - - if (stat(".", &st) != 0) { - return -1; - } - - 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; -} - -/* Tries to mount using the appropriate format. For 2.2 the struct, - for 2.4 the ascii version. */ -static int -do_mount(char *share_name, unsigned int flags, struct smb_mount_data *data) -{ - char *opts; - struct utsname uts; - char *release, *major, *minor; - char *data1, *data2; - int ret; - - if (asprintf(&opts, - "version=7,uid=%d,gid=%d,file_mode=0%o,dir_mode=0%o,%s", - mount_uid, mount_gid, data->file_mode, - data->dir_mode,options) < 0) { - return -1; - } - - uname(&uts); - release = uts.release; - major = strtok(release, "."); - minor = strtok(NULL, "."); - if (major && minor && atoi(major) == 2 && atoi(minor) < 4) { - /* < 2.4, assume struct */ - data1 = (char *) data; - data2 = opts; - } else { - /* >= 2.4, assume ascii but fall back on struct */ - data1 = opts; - data2 = (char *) data; - } - - if (mount(share_name, ".", "smbfs", flags, data1) == 0) { - SAFE_FREE(opts); - return 0; - } - ret = mount(share_name, ".", "smbfs", flags, data2); - SAFE_FREE(opts); - return ret; -} - - int main(int argc, char *argv[]) -{ - char *mount_point, *share_name = NULL; - FILE *mtab; - int fd; - unsigned int flags; - struct smb_mount_data data; - struct mntent ment; - - memset(&data, 0, sizeof(struct smb_mount_data)); - - if (argc < 2) { - help(); - exit(1); - } - - if (argv[1][0] == '-') { - help(); - exit(1); - } - - if (getuid() != 0) { - user_mount = 1; - } - - if (geteuid() != 0) { - fprintf(stderr, "smbmnt must be installed suid root for direct user mounts (%d,%d)\n", getuid(), geteuid()); - exit(1); - } - - mount_uid = getuid(); - mount_gid = getgid(); - mount_fmask = umask(0); - umask(mount_fmask); - mount_fmask = ~mount_fmask; - - mount_point = fullpath(argv[1]); - - argv += 1; - argc -= 1; - - if (mount_ok(mount_point) != 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(); - - if (parse_args(argc, argv, &data, &share_name) != 0) { - help(); - return -1; - } - - data.uid = mount_uid; // truncates to 16-bits here!!! - data.gid = mount_gid; - data.file_mode = (S_IRWXU|S_IRWXG|S_IRWXO) & mount_fmask; - data.dir_mode = (S_IRWXU|S_IRWXG|S_IRWXO) & mount_dmask; - - if (mount_dmask == 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 | MS_NOSUID | MS_NODEV; - - if (mount_ro) flags |= MS_RDONLY; - - if (do_mount(share_name, flags, &data) < 0) { - switch (errno) { - case ENODEV: - fprintf(stderr, "ERROR: smbfs filesystem not supported by the kernel\n"); - break; - default: - perror("mount error"); - } - fprintf(stderr, "Please refer to the smbmnt(8) manual page\n"); - return -1; - } - - ment.mnt_fsname = share_name ? share_name : (char *)"none"; - ment.mnt_dir = mount_point; - ment.mnt_type = (char *)"smbfs"; - ment.mnt_opts = (char *)""; - 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; -} |