2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include <afs/param.h>
16 #include <afs/afsint.h>
18 #include <afs/afs_assert.h>
22 #if defined(AFS_SUN5_ENV) || defined(AFS_NT40_ENV)
31 #include <afs/afsutil.h>
36 #include <afs/afssyscalls.h>
40 #include "partition.h"
41 #include "viceinode.h"
43 #include "daemon_com.h"
48 #define afs_stat stat64
49 #else /* !O_LARGEFILE */
51 #endif /* !O_LARGEFILE */
53 struct Lock localLock;
56 /* structure containing neatly packed set of inodes and the # of times we'll have
57 * to idec them in order to reclaim their storage. NukeProc, called by ListViceInodes,
58 * builds this list for us.
62 afs_int32 freePtr; /* first free index in this table */
63 Inode inode[MAXATONCE]; /* inode # */
64 afs_int32 count[MAXATONCE]; /* link count */
67 /* called with a structure specifying info about the inode, and our rock (which
68 * is the volume ID. Returns true if we should keep this inode, otherwise false.
69 * Note that ainfo->u.param[0] is always the volume ID, for any vice inode.
72 NukeProc(struct ViceInodeInfo *ainfo, afs_uint32 avolid, void *arock)
74 struct ilist **allInodes = (struct ilist **)arock;
78 #ifndef AFS_PTHREAD_ENV
79 IOMGR_Poll(); /* poll so we don't kill the RPC connection */
80 #endif /* !AFS_PTHREAD_ENV */
82 /* check if this is the volume we're looking for */
83 if (ainfo->u.param[0] != avolid)
84 return 0; /* don't want this one */
86 if (!*allInodes || (*allInodes)->freePtr >= MAXATONCE) {
87 ti = (struct ilist *)malloc(sizeof(struct ilist));
88 memset(ti, 0, sizeof(*ti));
89 ti->next = *allInodes;
92 ti = *allInodes; /* use the one with space */
93 i = ti->freePtr++; /* find our slot in this mess */
94 ti->inode[i] = ainfo->inodeNumber;
95 ti->count[i] = ainfo->linkCount;
96 return 0; /* don't care if anything's written out, actually */
99 /* function called with partition name and volid ID, and which removes all
100 * inodes marked with the specified volume ID. If the volume is a read-only
101 * clone, we'll only remove the header inodes, since they're the only inodes
102 * marked with that volume ID. If you want to reclaim all the data, you should
103 * nuke the read-write volume ID.
105 * Note also that nuking a read-write volume effectively nukes all RO volumes
106 * cloned from that RW volume ID, too, since everything except for their
107 * indices will be gone.
110 nuke(char *aname, afs_int32 avolid)
112 /* first process the partition containing this junk */
113 struct afs_stat tstat;
114 struct ilist *ti, *ni, *li=NULL;
119 struct DiskPartition64 *dp;
124 #endif /* AFS_NAMEI_ENV */
125 #ifndef AFS_NAMEI_ENV
127 #endif /* !AFS_NAMEI_ENV */
129 struct ilist *allInodes = 0;
133 code = afs_stat(aname, &tstat);
134 if (code || (dp = VGetPartition(aname, 0)) == NULL) {
135 printf("volnuke: partition %s does not exist.\n", aname);
141 /* get the device name for the partition */
142 #if defined(AFS_NAMEI_ENV) && !defined(AFS_NT40_ENV)
146 lastDevComp = &aname[strlen(aname) - 1];
147 *lastDevComp = toupper(*lastDevComp);
150 char *tfile = vol_DevName(tstat.st_dev, wpath);
152 printf("volnuke: can't find %s's device.\n", aname);
155 strcpy(devName, tfile); /* save this from the static buffer */
157 /* aim lastDevComp at the 'foo' of '/dev/foo' */
158 lastDevComp = strrchr(devName, '/');
159 /* either points at slash, or there is no slash; adjust appropriately */
163 lastDevComp = devName;
164 #endif /* AFS_NT40_ENV */
165 #endif /* AFS_NAMEI_ENV && !AFS_NT40_ENV */
167 ObtainWriteLock(&localLock);
168 /* OK, we have the mounted on place, aname, the device name (in devName).
169 * all we need to do to call ListViceInodes is find the inodes for the
170 * volume we're nuking.
173 ListViceInodes(lastDevComp, aname, NULL, NukeProc, avolid, &forceSal,
174 0, wpath, &allInodes);
176 /* actually do the idecs now */
177 for (ti = allInodes; ti; ti = ti->next) {
178 for (i = 0; i < ti->freePtr; i++) {
179 #ifndef AFS_PTHREAD_ENV
180 IOMGR_Poll(); /* keep RPC running */
181 #endif /* !AFS_PTHREAD_ENV */
182 /* idec this inode into oblivion */
185 IH_INIT(fileH, (int)(*lastDevComp - 'A'), avolid,
188 IH_INIT(fileH, (int)volutil_GetPartitionID(aname), avolid,
190 #endif /* AFS_NT40_ENV */
191 namei_HandleToName(&ufs_name, fileH);
192 path = ufs_name.n_path;
194 if (OS_UNLINK(path) < 0) {
195 Log("Nuke: Failed to remove %s\n", path);
197 #else /* AFS_NAMEI_ENV */
198 IH_INIT(fileH, (int)tstat.st_dev, avolid, ti->inode[i]);
201 for (j = 0; j < ti->count[i]; j++) {
202 code = IH_DEC(fileH, ti->inode[i], avolid);
206 #endif /* AFS_NAMEI_ENV */
213 code = 0; /* we really don't care about it except for debugging */
216 /* at this point, we should try to remove the volume header file itself.
217 * the volume header file is the file named VNNNNN.vol in the UFS file
218 * system, and is a normal file. As such, it is not stamped with the
219 * volume's ID in its inode, and has to be removed explicitly.
221 code = VDestroyVolumeDiskHeader(dp, avolid, 0);
223 /* just free things */
224 for (ti = allInodes; ti; ti = ni) {
232 ReleaseWriteLock(&localLock);