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author | Jeff Layton <jlayton@redhat.com> | 2010-03-08 15:05:05 -0500 |
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committer | Jeff Layton <jlayton@redhat.com> | 2010-03-08 15:05:05 -0500 |
commit | 8a76352544ccbac7e9aca2c3357256a01493cc7b (patch) | |
tree | 7753c37c37d51dc456c39f367df17eaeac3dc952 /client/umount.cifs.c | |
parent | fde707aa0c563d239c2f8c442cddfee0b6ff057f (diff) | |
download | samba-8a76352544ccbac7e9aca2c3357256a01493cc7b.tar.gz samba-8a76352544ccbac7e9aca2c3357256a01493cc7b.tar.bz2 samba-8a76352544ccbac7e9aca2c3357256a01493cc7b.zip |
samba: remove Linux cifs-utils files from samba master branch
This patch removes all of the files from the samba tree that should now
be provided by the cifs-utils package. It also drops a
"README.cifs-utils" into the topdir with a URL to the main cifs-utils
webpage. This is for people who don't want the lists and might be taken
by surprise by the change. That's optional, but I think it's a good idea
for a least a release or two.
Signed-off-by: Jeff Layton <jlayton@samba.org>
Diffstat (limited to 'client/umount.cifs.c')
-rw-r--r-- | client/umount.cifs.c | 406 |
1 files changed, 0 insertions, 406 deletions
diff --git a/client/umount.cifs.c b/client/umount.cifs.c deleted file mode 100644 index 35563c1150..0000000000 --- a/client/umount.cifs.c +++ /dev/null @@ -1,406 +0,0 @@ -/* - Unmount utility program for Linux CIFS VFS (virtual filesystem) client - Copyright (C) 2005 Steve French (sfrench@us.ibm.com) - - 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/>. */ - -#ifndef _GNU_SOURCE -#define _GNU_SOURCE -#endif - -#include <stdlib.h> -#include <stdio.h> -#include <unistd.h> -#include <ctype.h> -#include <sys/types.h> -#include <sys/mount.h> -#include <sys/ioctl.h> -#include <sys/stat.h> -#include <sys/vfs.h> -#include <fcntl.h> -#include <getopt.h> -#include <errno.h> -#include <string.h> -#include <mntent.h> -#include <limits.h> -#include "mount.h" - -#define UNMOUNT_CIFS_VERSION_MAJOR "0" -#define UNMOUNT_CIFS_VERSION_MINOR "6" - -#ifndef UNMOUNT_CIFS_VENDOR_SUFFIX - #ifdef _SAMBA_BUILD_ - #include "version.h" - #ifdef SAMBA_VERSION_VENDOR_SUFFIX - #define UNMOUNT_CIFS_VENDOR_SUFFIX "-"SAMBA_VERSION_OFFICIAL_STRING"-"SAMBA_VERSION_VENDOR_SUFFIX - #else - #define UNMOUNT_CIFS_VENDOR_SUFFIX "-"SAMBA_VERSION_OFFICIAL_STRING - #endif /* SAMBA_VERSION_OFFICIAL_STRING and SAMBA_VERSION_VENDOR_SUFFIX */ - #else - #define UNMOUNT_CIFS_VENDOR_SUFFIX "" - #endif /* _SAMBA_BUILD_ */ -#endif /* UNMOUNT_CIFS_VENDOR_SUFFIX */ - -#ifndef MNT_DETACH -#define MNT_DETACH 0x02 -#endif - -#ifndef MNT_EXPIRE -#define MNT_EXPIRE 0x04 -#endif - -#ifndef MOUNTED_LOCK -#define MOUNTED_LOCK "/etc/mtab~" -#endif -#ifndef MOUNTED_TEMP -#define MOUNTED_TEMP "/etc/mtab.tmp" -#endif - -#define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2) -#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDU */ - -static struct option longopts[] = { - { "all", 0, NULL, 'a' }, - { "help",0, NULL, 'h' }, - { "read-only", 0, NULL, 'r' }, - { "ro", 0, NULL, 'r' }, - { "verbose", 0, NULL, 'v' }, - { "version", 0, NULL, 'V' }, - { "expire", 0, NULL, 'e' }, - { "force", 0, 0, 'f' }, - { "lazy", 0, 0, 'l' }, - { "no-mtab", 0, 0, 'n' }, - { NULL, 0, NULL, 0 } -}; - -const char * thisprogram; -int verboseflg = 0; - -static void umount_cifs_usage(void) -{ - printf("\nUsage: %s <remotetarget> <dir>\n", thisprogram); - printf("\nUnmount the specified directory\n"); - printf("\nLess commonly used options:"); - printf("\n\t-r\tIf mount fails, retry with readonly remount."); - printf("\n\t-n\tDo not write to mtab."); - printf("\n\t-f\tAttempt a forced unmount, even if the fs is busy."); - printf("\n\t-l\tAttempt lazy unmount, Unmount now, cleanup later."); - printf("\n\t-v\tEnable verbose mode (may be useful for debugging)."); - printf("\n\t-h\tDisplay this help."); - printf("\n\nOptions are described in more detail in the manual page"); - printf("\n\tman 8 umount.cifs\n"); - printf("\nTo display the version number of the cifs umount utility:"); - printf("\n\t%s -V\n",thisprogram); - printf("\nInvoking the umount utility on cifs mounts, can execute"); - printf(" /sbin/umount.cifs (if present and umount -i is not specified.\n"); -} - -static int umount_check_perm(char * dir) -{ - int fileid; - int rc; - - /* allow root to unmount, no matter what */ - if(getuid() == 0) - return 0; - - /* presumably can not chdir into the target as we do on mount */ - fileid = open(dir, O_RDONLY | O_DIRECTORY | O_NOFOLLOW, 0); - if(fileid == -1) { - if(verboseflg) - printf("error opening mountpoint %d %s",errno,strerror(errno)); - return errno; - } - - rc = ioctl(fileid, CIFS_IOC_CHECKUMOUNT, NULL); - - if(verboseflg) - printf("ioctl returned %d with errno %d %s\n",rc,errno,strerror(errno)); - - if(rc == ENOTTY) { - printf("user unmounting via %s is an optional feature of",thisprogram); - printf(" the cifs filesystem driver (cifs.ko)"); - printf("\n\tand requires cifs.ko version 1.32 or later\n"); - } else if (rc != 0) - printf("user unmount of %s failed with %d %s\n",dir,errno,strerror(errno)); - close(fileid); - - return rc; -} - -static int remove_from_mtab(char * mountpoint) -{ - int rc; - int num_matches; - FILE * org_fd; - FILE * new_fd; - struct mntent * mount_entry; - struct stat statbuf; - - /* If it is a symlink, e.g. to /proc/mounts, no need to update it. */ - if ((lstat(MOUNTED, &statbuf) == 0) && (S_ISLNK(statbuf.st_mode))) - return 0; - - /* Do we first need to check if it is writable? */ - - atexit(unlock_mtab); - if (lock_mtab()) { - printf("Mount table locked\n"); - return -EACCES; - } - - if(verboseflg) - printf("attempting to remove from mtab\n"); - - org_fd = setmntent(MOUNTED, "r"); - if(org_fd == NULL) { - printf("Can not open %s\n",MOUNTED); - unlock_mtab(); - return -EIO; - } - - new_fd = setmntent(MOUNTED_TEMP,"w"); - if(new_fd == NULL) { - printf("Can not open temp file %s", MOUNTED_TEMP); - endmntent(org_fd); - unlock_mtab(); - return -EIO; - } - - /* BB fix so we only remove the last entry that matches BB */ - num_matches = 0; - while((mount_entry = getmntent(org_fd)) != NULL) { - if(strcmp(mount_entry->mnt_dir, mountpoint) == 0) { - num_matches++; - } - } - if(verboseflg) - printf("%d matching entries in mount table\n", num_matches); - - /* Is there a better way to seek back to the first entry in mtab? */ - endmntent(org_fd); - org_fd = setmntent(MOUNTED, "r"); - - if(org_fd == NULL) { - printf("Can not open %s\n",MOUNTED); - unlock_mtab(); - return -EIO; - } - - while((mount_entry = getmntent(org_fd)) != NULL) { - if(strcmp(mount_entry->mnt_dir, mountpoint) != 0) { - addmntent(new_fd, mount_entry); - } else { - if(num_matches != 1) { - addmntent(new_fd, mount_entry); - num_matches--; - } else if(verboseflg) - printf("entry not copied (ie entry is removed)\n"); - } - } - - if(verboseflg) - printf("done updating tmp file\n"); - rc = fchmod (fileno (new_fd), S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH); - if(rc < 0) { - printf("error %s changing mode of %s\n", strerror(errno), - MOUNTED_TEMP); - } - endmntent(new_fd); - - rc = rename(MOUNTED_TEMP, MOUNTED); - - if(rc < 0) { - printf("failure %s renaming %s to %s\n",strerror(errno), - MOUNTED_TEMP, MOUNTED); - unlock_mtab(); - return -EIO; - } - - unlock_mtab(); - - return rc; -} - -/* Make a canonical pathname from PATH. Returns a freshly malloced string. - It is up the *caller* to ensure that the PATH is sensible. i.e. - canonicalize ("/dev/fd0/.") returns "/dev/fd0" even though ``/dev/fd0/.'' - is not a legal pathname for ``/dev/fd0'' Anything we cannot parse - we return unmodified. */ -static char * -canonicalize(char *path) -{ - char *canonical; - - if (path == NULL) { - return NULL; - } - - if (strlen(path) > PATH_MAX) { - fprintf(stderr, "Mount point string too long\n"); - return NULL; - } - - canonical = (char *)malloc (PATH_MAX + 1); - - if (!canonical) { - fprintf(stderr, "Error! Not enough memory!\n"); - return NULL; - } - - if (realpath (path, canonical)) - return canonical; - - strncpy (canonical, path, PATH_MAX); - canonical[PATH_MAX] = '\0'; - return canonical; -} - -int main(int argc, char ** argv) -{ - int c; - int rc; - int flags = 0; - int nomtab = 0; - int retry_remount = 0; - struct statfs statbuf; - char * mountpoint; - - if(argc && argv) { - thisprogram = argv[0]; - } else { - umount_cifs_usage(); - return -EINVAL; - } - - if(argc < 2) { - umount_cifs_usage(); - return -EINVAL; - } - - if(thisprogram == NULL) - thisprogram = "umount.cifs"; - - /* add sharename in opts string as unc= parm */ - - while ((c = getopt_long (argc, argv, "afhilnrvV", - longopts, NULL)) != -1) { - switch (c) { -/* No code to do the following option yet */ -/* case 'a': - ++umount_all; - break; */ - case '?': - case 'h': /* help */ - umount_cifs_usage(); - exit(1); - case 'n': - ++nomtab; - break; - case 'f': - flags |= MNT_FORCE; - break; - case 'l': - flags |= MNT_DETACH; /* lazy unmount */ - break; - case 'e': - flags |= MNT_EXPIRE; /* gradually timeout */ - break; - case 'r': - ++retry_remount; - break; - case 'v': - ++verboseflg; - break; - case 'V': - printf ("umount.cifs version: %s.%s%s\n", - UNMOUNT_CIFS_VERSION_MAJOR, - UNMOUNT_CIFS_VERSION_MINOR, - UNMOUNT_CIFS_VENDOR_SUFFIX); - exit (0); - default: - printf("unknown unmount option %c\n",c); - umount_cifs_usage(); - exit(1); - } - } - - /* move past the umount options */ - argv += optind; - argc -= optind; - - mountpoint = canonicalize(argv[0]); - - if((argc < 1) || (argv[0] == NULL)) { - printf("\nMissing name of unmount directory\n"); - umount_cifs_usage(); - return -EINVAL; - } - - if(verboseflg) - printf("optind %d unmount dir %s\n",optind, mountpoint); - - /* check if running effectively root */ - if(geteuid() != 0) { - printf("Trying to unmount when %s not installed suid\n",thisprogram); - if(verboseflg) - printf("euid = %d\n",geteuid()); - return -EACCES; - } - - /* fixup path if needed */ - - /* Trim any trailing slashes */ - while ((strlen(mountpoint) > 1) && - (mountpoint[strlen(mountpoint)-1] == '/')) - { - mountpoint[strlen(mountpoint)-1] = '\0'; - } - - /* make sure that this is a cifs filesystem */ - rc = statfs(mountpoint, &statbuf); - - if(rc || (statbuf.f_type != CIFS_MAGIC_NUMBER)) { - printf("This utility only unmounts cifs filesystems.\n"); - return -EINVAL; - } - - /* check if our uid was the one who mounted */ - rc = umount_check_perm(mountpoint); - if (rc) { - printf("Not permitted to unmount\n"); - return rc; - } - - if(umount2(mountpoint, flags)) { - /* remember to kill daemon on error */ - switch (errno) { - case 0: - printf("unmount failed but no error number set\n"); - break; - default: - printf("unmount error %d = %s\n",errno,strerror(errno)); - } - printf("Refer to the umount.cifs(8) manual page (man 8 umount.cifs)\n"); - return -1; - } else { - if(verboseflg) - printf("umount2 succeeded\n"); - if(nomtab == 0) - remove_from_mtab(mountpoint); - } - - return 0; -} - |