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>
36 #include <afs/assert.h>
40 #include <afs/afssyscalls.h>
44 #include "partition.h"
45 #include "viceinode.h"
47 #include "daemon_com.h"
51 #define afs_stat stat64
52 #else /* !O_LARGEFILE */
54 #endif /* !O_LARGEFILE */
56 /*@printflike@*/ extern void Log(const char *format, ...);
59 struct Lock localLock;
62 /* structure containing neatly packed set of inodes and the # of times we'll have
63 * to idec them in order to reclaim their storage. NukeProc, called by ListViceInodes,
64 * builds this list for us.
68 afs_int32 freePtr; /* first free index in this table */
69 Inode inode[MAXATONCE]; /* inode # */
70 afs_int32 count[MAXATONCE]; /* link count */
73 /* called with a structure specifying info about the inode, and our rock (which
74 * is the volume ID. Returns true if we should keep this inode, otherwise false.
75 * Note that ainfo->u.param[0] is always the volume ID, for any vice inode.
78 NukeProc(struct ViceInodeInfo *ainfo, afs_uint32 avolid, void *arock)
80 struct ilist **allInodes = (struct ilist **)arock;
84 #ifndef AFS_PTHREAD_ENV
85 IOMGR_Poll(); /* poll so we don't kill the RPC connection */
86 #endif /* !AFS_PTHREAD_ENV */
88 /* check if this is the volume we're looking for */
89 if (ainfo->u.param[0] != avolid)
90 return 0; /* don't want this one */
92 if (!*allInodes || (*allInodes)->freePtr >= MAXATONCE) {
93 ti = (struct ilist *)malloc(sizeof(struct ilist));
94 memset(ti, 0, sizeof(*ti));
95 ti->next = *allInodes;
98 ti = *allInodes; /* use the one with space */
99 i = ti->freePtr++; /* find our slot in this mess */
100 ti->inode[i] = ainfo->inodeNumber;
101 ti->count[i] = ainfo->linkCount;
102 return 0; /* don't care if anything's written out, actually */
105 /* function called with partition name and volid ID, and which removes all
106 * inodes marked with the specified volume ID. If the volume is a read-only
107 * clone, we'll only remove the header inodes, since they're the only inodes
108 * marked with that volume ID. If you want to reclaim all the data, you should
109 * nuke the read-write volume ID.
111 * Note also that nuking a read-write volume effectively nukes all RO volumes
112 * cloned from that RW volume ID, too, since everything except for their
113 * indices will be gone.
116 nuke(char *aname, afs_int32 avolid)
118 /* first process the partition containing this junk */
119 struct afs_stat tstat;
120 struct ilist *ti, *ni, *li=NULL;
121 register afs_int32 code;
123 char devName[64], wpath[100];
132 #endif /* AFS_NAMEI_ENV */
134 struct ilist *allInodes = 0;
138 code = afs_stat(aname, &tstat);
140 printf("volnuke: partition %s does not exist.\n", aname);
143 /* get the device name for the partition */
144 #if defined(AFS_NAMEI_ENV) && !defined(AFS_NT40_ENV)
148 lastDevComp = &aname[strlen(aname) - 1];
149 *lastDevComp = toupper(*lastDevComp);
152 char *tfile = vol_DevName(tstat.st_dev, wpath);
154 printf("volnuke: can't find %s's device.\n", aname);
157 strcpy(devName, tfile); /* save this from the static buffer */
159 /* aim lastDevComp at the 'foo' of '/dev/foo' */
160 lastDevComp = strrchr(devName, '/');
161 /* either points at slash, or there is no slash; adjust appropriately */
165 lastDevComp = devName;
166 #endif /* AFS_NT40_ENV */
167 #endif /* AFS_NAMEI_ENV && !AFS_NT40_ENV */
169 ObtainWriteLock(&localLock);
170 /* OK, we have the mounted on place, aname, the device name (in devName).
171 * all we need to do to call ListViceInodes is find the inodes for the
172 * volume we're nuking.
176 ListViceInodes(lastDevComp, aname, NULL, NukeProc, avolid, &forceSal,
177 0, wpath, &allInodes);
180 ListViceInodes(lastDevComp, aname, "/tmp/vNukeXX", NukeProc, avolid,
181 &forceSal, 0, wpath, &allInodes);
182 unlink("/tmp/vNukeXX"); /* clean it up now */
185 /* actually do the idecs now */
186 for (ti = allInodes; ti; ti = ti->next) {
187 for (i = 0; i < ti->freePtr; i++) {
188 #ifndef AFS_PTHREAD_ENV
189 IOMGR_Poll(); /* keep RPC running */
190 #endif /* !AFS_PTHREAD_ENV */
191 /* idec this inode into oblivion */
194 IH_INIT(fileH, (int)(*lastDevComp - 'A'), avolid,
196 nt_HandleToName(path, fileH);
198 IH_INIT(fileH, (int)volutil_GetPartitionID(aname), avolid,
200 namei_HandleToName(&ufs_name, fileH);
201 path = ufs_name.n_path;
202 #endif /* AFS_NT40_ENV */
204 if (unlink(path) < 0) {
205 Log("Nuke: Failed to remove %s\n", path);
207 #else /* AFS_NAMEI_ENV */
208 IH_INIT(fileH, (int)tstat.st_dev, avolid, ti->inode[i]);
211 for (j = 0; j < ti->count[i]; j++) {
212 code = IH_DEC(fileH, ti->inode[i], avolid);
216 #endif /* AFS_NAMEI_ENV */
223 code = 0; /* we really don't care about it except for debugging */
226 /* at this point, we should try to remove the volume header file itself.
227 * the volume header file is the file named VNNNNN.vol in the UFS file
228 * system, and is a normal file. As such, it is not stamped with the
229 * volume's ID in its inode, and has to be removed explicitly.
231 /* reuse devName buffer now */
233 afs_snprintf(devName, sizeof devName, "%c:\\%s", *lastDevComp,
234 VolumeExternalName(avolid));
236 afs_snprintf(devName, sizeof devName, "%s/%s", aname,
237 VolumeExternalName(avolid));
238 #endif /* AFS_NT40_ENV */
239 code = unlink(devName);
243 /* just free things */
244 for (ti = allInodes; ti; ti = ni) {
252 ReleaseWriteLock(&localLock);