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/afsutil.h>
23 #include <afs/afssyscalls.h>
27 #include "partition.h"
28 #include "viceinode.h"
30 #include "daemon_com.h"
34 struct Lock localLock;
37 /* structure containing neatly packed set of inodes and the # of times we'll have
38 * to idec them in order to reclaim their storage. NukeProc, called by ListViceInodes,
39 * builds this list for us.
43 afs_int32 freePtr; /* first free index in this table */
44 Inode inode[MAXATONCE]; /* inode # */
45 afs_int32 count[MAXATONCE]; /* link count */
48 /* called with a structure specifying info about the inode, and our rock (which
49 * is the volume ID. Returns true if we should keep this inode, otherwise false.
50 * Note that ainfo->u.param[0] is always the volume ID, for any vice inode.
53 NukeProc(struct ViceInodeInfo *ainfo, afs_uint32 avolid, void *arock)
55 struct ilist **allInodes = (struct ilist **)arock;
59 #ifndef AFS_PTHREAD_ENV
60 IOMGR_Poll(); /* poll so we don't kill the RPC connection */
61 #endif /* !AFS_PTHREAD_ENV */
63 /* check if this is the volume we're looking for */
64 if (ainfo->u.param[0] != avolid)
65 return 0; /* don't want this one */
67 if (!*allInodes || (*allInodes)->freePtr >= MAXATONCE) {
68 ti = calloc(1, sizeof(struct ilist));
69 ti->next = *allInodes;
72 ti = *allInodes; /* use the one with space */
73 i = ti->freePtr++; /* find our slot in this mess */
74 ti->inode[i] = ainfo->inodeNumber;
75 ti->count[i] = ainfo->linkCount;
76 return 0; /* don't care if anything's written out, actually */
79 /* function called with partition name and volid ID, and which removes all
80 * inodes marked with the specified volume ID. If the volume is a read-only
81 * clone, we'll only remove the header inodes, since they're the only inodes
82 * marked with that volume ID. If you want to reclaim all the data, you should
83 * nuke the read-write volume ID.
85 * Note also that nuking a read-write volume effectively nukes all RO volumes
86 * cloned from that RW volume ID, too, since everything except for their
87 * indices will be gone.
90 nuke(char *aname, afs_int32 avolid)
92 /* first process the partition containing this junk */
93 struct afs_stat_st tstat;
94 struct ilist *ti, *ni, *li=NULL;
99 struct DiskPartition64 *dp;
104 #endif /* AFS_NAMEI_ENV */
105 #ifndef AFS_NAMEI_ENV
107 #endif /* !AFS_NAMEI_ENV */
109 struct ilist *allInodes = 0;
113 code = afs_stat(aname, &tstat);
114 if (code || (dp = VGetPartition(aname, 0)) == NULL) {
115 printf("volnuke: partition %s does not exist.\n", aname);
121 /* get the device name for the partition */
122 #if defined(AFS_NAMEI_ENV) && !defined(AFS_NT40_ENV)
126 lastDevComp = &aname[strlen(aname) - 1];
127 *lastDevComp = toupper(*lastDevComp);
130 char *tfile = vol_DevName(tstat.st_dev, wpath);
132 printf("volnuke: can't find %s's device.\n", aname);
135 strcpy(devName, tfile); /* save this from the static buffer */
137 /* aim lastDevComp at the 'foo' of '/dev/foo' */
138 lastDevComp = strrchr(devName, OS_DIRSEPC);
139 /* either points at slash, or there is no slash; adjust appropriately */
143 lastDevComp = devName;
144 #endif /* AFS_NT40_ENV */
145 #endif /* AFS_NAMEI_ENV && !AFS_NT40_ENV */
147 ObtainWriteLock(&localLock);
148 /* OK, we have the mounted on place, aname, the device name (in devName).
149 * all we need to do to call ListViceInodes is find the inodes for the
150 * volume we're nuking.
153 ListViceInodes(lastDevComp, aname, INVALID_FD, NukeProc, avolid, &forceSal,
154 0, wpath, &allInodes);
156 /* actually do the idecs now */
157 for (ti = allInodes; ti; ti = ti->next) {
158 for (i = 0; i < ti->freePtr; i++) {
159 #ifndef AFS_PTHREAD_ENV
160 IOMGR_Poll(); /* keep RPC running */
161 #endif /* !AFS_PTHREAD_ENV */
162 /* idec this inode into oblivion */
165 IH_INIT(fileH, (int)(*lastDevComp - 'A'), avolid,
168 IH_INIT(fileH, (int)volutil_GetPartitionID(aname), avolid,
170 #endif /* AFS_NT40_ENV */
171 namei_HandleToName(&ufs_name, fileH);
172 path = ufs_name.n_path;
174 if (OS_UNLINK(path) < 0) {
175 Log("Nuke: Failed to remove %s\n", path);
177 #else /* AFS_NAMEI_ENV */
178 IH_INIT(fileH, (int)tstat.st_dev, avolid, ti->inode[i]);
181 for (j = 0; j < ti->count[i]; j++) {
182 code = IH_DEC(fileH, ti->inode[i], avolid);
186 #endif /* AFS_NAMEI_ENV */
193 code = 0; /* we really don't care about it except for debugging */
196 /* at this point, we should try to remove the volume header file itself.
197 * the volume header file is the file named VNNNNN.vol in the UFS file
198 * system, and is a normal file. As such, it is not stamped with the
199 * volume's ID in its inode, and has to be removed explicitly.
201 code = VDestroyVolumeDiskHeader(dp, avolid, 0);
203 /* just free things */
204 for (ti = allInodes; ti; ti = ni) {
212 ReleaseWriteLock(&localLock);