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>
15 #include <afs/afsint.h>
17 #ifdef AFS_PTHREAD_ENV
19 #else /* AFS_PTHREAD_ENV */
20 #include <afs/assert.h>
21 #endif /* AFS_PTHREAD_ENV */
25 #if defined(AFS_SUN5_ENV) || defined(AFS_NT40_ENV)
34 #include <afs/afsutil.h>
39 #include <afs/afssyscalls.h>
43 #include "partition.h"
44 #include "viceinode.h"
46 #include "daemon_com.h"
51 #define afs_stat stat64
52 #else /* !O_LARGEFILE */
54 #endif /* !O_LARGEFILE */
56 struct Lock localLock;
59 /* structure containing neatly packed set of inodes and the # of times we'll have
60 * to idec them in order to reclaim their storage. NukeProc, called by ListViceInodes,
61 * builds this list for us.
65 afs_int32 freePtr; /* first free index in this table */
66 Inode inode[MAXATONCE]; /* inode # */
67 afs_int32 count[MAXATONCE]; /* link count */
70 /* called with a structure specifying info about the inode, and our rock (which
71 * is the volume ID. Returns true if we should keep this inode, otherwise false.
72 * Note that ainfo->u.param[0] is always the volume ID, for any vice inode.
75 NukeProc(struct ViceInodeInfo *ainfo, afs_uint32 avolid, void *arock)
77 struct ilist **allInodes = (struct ilist **)arock;
81 #ifndef AFS_PTHREAD_ENV
82 IOMGR_Poll(); /* poll so we don't kill the RPC connection */
83 #endif /* !AFS_PTHREAD_ENV */
85 /* check if this is the volume we're looking for */
86 if (ainfo->u.param[0] != avolid)
87 return 0; /* don't want this one */
89 if (!*allInodes || (*allInodes)->freePtr >= MAXATONCE) {
90 ti = (struct ilist *)malloc(sizeof(struct ilist));
91 memset(ti, 0, sizeof(*ti));
92 ti->next = *allInodes;
95 ti = *allInodes; /* use the one with space */
96 i = ti->freePtr++; /* find our slot in this mess */
97 ti->inode[i] = ainfo->inodeNumber;
98 ti->count[i] = ainfo->linkCount;
99 return 0; /* don't care if anything's written out, actually */
102 /* function called with partition name and volid ID, and which removes all
103 * inodes marked with the specified volume ID. If the volume is a read-only
104 * clone, we'll only remove the header inodes, since they're the only inodes
105 * marked with that volume ID. If you want to reclaim all the data, you should
106 * nuke the read-write volume ID.
108 * Note also that nuking a read-write volume effectively nukes all RO volumes
109 * cloned from that RW volume ID, too, since everything except for their
110 * indices will be gone.
113 nuke(char *aname, afs_int32 avolid)
115 /* first process the partition containing this junk */
116 struct afs_stat tstat;
117 struct ilist *ti, *ni, *li=NULL;
122 struct DiskPartition64 *dp;
130 #endif /* AFS_NAMEI_ENV */
131 #ifndef AFS_NAMEI_ENV
133 #endif /* !AFS_NAMEI_ENV */
135 struct ilist *allInodes = 0;
139 code = afs_stat(aname, &tstat);
140 if (code || (dp = VGetPartition(aname, 0)) == NULL) {
141 printf("volnuke: partition %s does not exist.\n", aname);
147 /* get the device name for the partition */
148 #if defined(AFS_NAMEI_ENV) && !defined(AFS_NT40_ENV)
152 lastDevComp = &aname[strlen(aname) - 1];
153 *lastDevComp = toupper(*lastDevComp);
156 char *tfile = vol_DevName(tstat.st_dev, wpath);
158 printf("volnuke: can't find %s's device.\n", aname);
161 strcpy(devName, tfile); /* save this from the static buffer */
163 /* aim lastDevComp at the 'foo' of '/dev/foo' */
164 lastDevComp = strrchr(devName, '/');
165 /* either points at slash, or there is no slash; adjust appropriately */
169 lastDevComp = devName;
170 #endif /* AFS_NT40_ENV */
171 #endif /* AFS_NAMEI_ENV && !AFS_NT40_ENV */
173 ObtainWriteLock(&localLock);
174 /* OK, we have the mounted on place, aname, the device name (in devName).
175 * all we need to do to call ListViceInodes is find the inodes for the
176 * volume we're nuking.
179 ListViceInodes(lastDevComp, aname, NULL, NukeProc, avolid, &forceSal,
180 0, wpath, &allInodes);
182 /* actually do the idecs now */
183 for (ti = allInodes; ti; ti = ti->next) {
184 for (i = 0; i < ti->freePtr; i++) {
185 #ifndef AFS_PTHREAD_ENV
186 IOMGR_Poll(); /* keep RPC running */
187 #endif /* !AFS_PTHREAD_ENV */
188 /* idec this inode into oblivion */
191 IH_INIT(fileH, (int)(*lastDevComp - 'A'), avolid,
193 nt_HandleToName(path, fileH);
195 IH_INIT(fileH, (int)volutil_GetPartitionID(aname), avolid,
197 namei_HandleToName(&ufs_name, fileH);
198 path = ufs_name.n_path;
199 #endif /* AFS_NT40_ENV */
201 if (unlink(path) < 0) {
202 Log("Nuke: Failed to remove %s\n", path);
204 #else /* AFS_NAMEI_ENV */
205 IH_INIT(fileH, (int)tstat.st_dev, avolid, ti->inode[i]);
208 for (j = 0; j < ti->count[i]; j++) {
209 code = IH_DEC(fileH, ti->inode[i], avolid);
213 #endif /* AFS_NAMEI_ENV */
220 code = 0; /* we really don't care about it except for debugging */
223 /* at this point, we should try to remove the volume header file itself.
224 * the volume header file is the file named VNNNNN.vol in the UFS file
225 * system, and is a normal file. As such, it is not stamped with the
226 * volume's ID in its inode, and has to be removed explicitly.
228 code = VDestroyVolumeDiskHeader(dp, avolid, 0);
230 /* just free things */
231 for (ti = allInodes; ti; ti = ni) {
239 ReleaseWriteLock(&localLock);