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 #ifdef AFS_PTHREAD_ENV
20 #else /* AFS_PTHREAD_ENV */
21 #include <afs/assert.h>
22 #endif /* AFS_PTHREAD_ENV */
26 #if defined(AFS_SUN5_ENV) || defined(AFS_NT40_ENV)
32 #include <afs/assert.h>
36 #include <afs/afssyscalls.h>
40 #include "partition.h"
41 #include "viceinode.h"
46 struct Lock localLock;
50 /* structure containing neatly packed set of inodes and the # of times we'll have
51 * to idec them in order to reclaim their storage. NukeProc, called by ListViceInodes,
52 * builds this list for us.
56 afs_int32 freePtr; /* first free index in this table */
57 Inode inode[MAXATONCE]; /* inode # */
58 afs_int32 count[MAXATONCE]; /* link count */
61 /* called with a structure specifying info about the inode, and our rock (which
62 * is the volume ID. Returns true if we should keep this inode, otherwise false.
63 * Note that ainfo->u.param[0] is always the volume ID, for any vice inode.
65 static int NukeProc(struct ViceInodeInfo *ainfo, afs_int32 avolid)
70 #ifndef AFS_PTHREAD_ENV
71 IOMGR_Poll(); /* poll so we don't kill the RPC connection */
72 #endif /* !AFS_PTHREAD_ENV */
74 /* check if this is the volume we're looking for */
75 if (ainfo->u.param[0] != avolid) return 0; /* don't want this one */
77 if (!allInodes || allInodes->freePtr >= MAXATONCE) {
78 ti = (struct ilist *) malloc(sizeof(struct ilist));
79 memset(ti, 0, sizeof(*ti));
83 else ti = allInodes; /* use the one with space */
84 i = ti->freePtr++; /* find our slot in this mess */
85 ti->inode[i] = ainfo->inodeNumber;
86 ti->count[i] = ainfo->linkCount;
87 return 0; /* don't care if anything's written out, actually */
90 /* function called with partition name and volid ID, and which removes all
91 * inodes marked with the specified volume ID. If the volume is a read-only
92 * clone, we'll only remove the header inodes, since they're the only inodes
93 * marked with that volume ID. If you want to reclaim all the data, you should
94 * nuke the read-write volume ID.
96 * Note also that nuking a read-write volume effectively nukes all RO volumes
97 * cloned from that RW volume ID, too, since everything except for their
98 * indices will be gone.
100 int nuke(char *aname, afs_int32 avolid)
102 /* first process the partition containing this junk */
104 struct ilist *ti, *ni;
105 register afs_int32 code;
108 char devName[64], wpath[100];
117 #endif /* AFS_NAMEI_ENV */
120 if (avolid == 0) return EINVAL;
121 code = stat(aname, &tstat);
123 printf("volnuke: partition %s does not exist.\n", aname);
126 /* get the device name for the partition */
127 #if defined(AFS_NAMEI_ENV) && !defined(AFS_NT40_ENV)
131 lastDevComp = &aname[strlen(aname)-1];
132 *lastDevComp = toupper(*lastDevComp);
134 tfile = vol_DevName(tstat.st_dev, wpath);
136 printf("volnuke: can't find %s's device.\n", aname);
139 strcpy(devName, tfile); /* save this from the static buffer */
140 /* aim lastDevComp at the 'foo' of '/dev/foo' */
141 lastDevComp = strrchr(devName, '/');
142 /* either points at slash, or there is no slash; adjust appropriately */
145 else lastDevComp = devName;
146 #endif /* AFS_NT40_ENV */
147 #endif /* AFS_NAMEI_ENV && !AFS_NT40_ENV */
149 ObtainWriteLock(&localLock);
150 /* OK, we have the mounted on place, aname, the device name (in devName).
151 * all we need to do to call ListViceInodes is find the inodes for the
152 * volume we're nuking.
155 code = ListViceInodes(lastDevComp, aname, NULL, NukeProc, avolid,
156 &forceSal, 0, wpath);
158 code = ListViceInodes(lastDevComp, aname, "/tmp/vNukeXX", NukeProc, avolid, &forceSal, 0, wpath);
159 unlink("/tmp/vNukeXX"); /* clean it up now */
162 /* actually do the idecs now */
163 for(ti=allInodes; ti; ti=ti->next) {
164 for(i=0;i<ti->freePtr;i++) {
165 #ifndef AFS_PTHREAD_ENV
166 IOMGR_Poll(); /* keep RPC running */
167 #endif /* !AFS_PTHREAD_ENV */
168 /* idec this inode into oblivion */
171 IH_INIT(fileH, (int) (*lastDevComp - 'A'), avolid,
173 nt_HandleToName(path, fileH);
175 IH_INIT(fileH, (int) volutil_GetPartitionID(aname), avolid,
177 namei_HandleToName(&ufs_name, fileH);
178 path = ufs_name.n_path;
179 #endif /* AFS_NT40_ENV */
181 if (unlink(path)<0) {
182 Log("Nuke: Failed to remove %s\n", path);
184 #else /* AFS_NAMEI_ENV */
185 IH_INIT(fileH, (int) tstat.st_dev, avolid,
187 for(j=0;j<ti->count[i];j++) {
188 code = IH_DEC(fileH, ti->inode[i], avolid);
191 #endif /* AFS_NAMEI_ENV */
196 code = 0; /* we really don't care about it except for debugging */
199 /* at this point, we should try to remove the volume header file itself.
200 * the volume header file is the file named VNNNNN.vol in the UFS file
201 * system, and is a normal file. As such, it is not stamped with the
202 * volume's ID in its inode, and has to be removed explicitly.
204 /* reuse devName buffer now */
206 sprintf(devName, "%c:\\%s", *lastDevComp , VolumeExternalName(avolid));
208 sprintf(devName, "%s/%s", aname, VolumeExternalName(avolid));
209 #endif /* AFS_NT40_ENV */
210 code = unlink(devName);
211 if (code) code = errno;
214 /* just free things */
215 for(ti=allInodes; ti; ti = ni) {
221 ReleaseWriteLock(&localLock);